CN114940295A - Parallel air-blowing type plasma bag breaking method - Google Patents

Abstract

The parallel air-blowing plasma bag breaking method is based on the parallel air-blowing plasma bag breaking system. The method realizes the automatic bag breaking of the frozen plasma bag, the automatic discharge of plasma after the bag is broken, and the automatic collection of the empty plasma bag; the method is as follows: The bag holder picks up the plasma bag from the tray; the bag clamper picks up the plasma bag from the lifter; the tube cutting device cuts the hose of the plasma bag; the bag cutting device cuts the outer wall of the plasma bag; The ice-shaped plasma block is blown out; the bag clamper transfers the plasma bag to the chain conveyor; the empty bag ejection device unloads the empty plasma bag on the chain conveyor. The invention realizes the automatic bag breaking of the frozen plasma bag, the automatic discharge of the plasma after the bag is broken, and the automatic collection of the empty plasma bag, which greatly improves the efficiency of the operation of breaking the blood plasma bag, and effectively avoids the pollution of blood products that may be caused by manual operation and the operation personnel. Security Risk.

Description

The method of breaking the blood bag with parallel air-blown plasma bag

technical field

The invention relates to the technical field of blood plasma bag breaking, in particular to a parallel air-blown plasma bag breaking method.

Background technique

Blood products mainly refer to biologically active preparations prepared by separation and purification technology from human plasma, such as human albumin, human immunoglobulin and small products, which are used for diagnosis, treatment or passive immune prevention. The plasma collected from healthy humans is first stored in a standard plasma bag, and then frozen into an ice-like body for storage in a low temperature environment of -30 to -40 °C (cold storage). Before the production of blood products, the cleaned and sterilized plasma bag needs to be broken, so that the plasma of the ice body can be taken out and put into the melting tank to be melted.

At present, in blood product production enterprises, the plasma bag breaking process is usually performed manually. The operation process is that the worker grasps the frozen plasma bag, cuts the plasma bag with a knife, and then removes the ice-shaped plasma from the bag. Squeeze out so that ice cubes of plasma fall into the collection container.

The above-mentioned artificial bag breaking process has the following shortcomings: 1. The frozen plasma clot is closely adhered to the inner wall of the plasma bag. After the plasma bag is cut, it is necessary to repeatedly rub/beat the bag body to separate the frozen plasma clot from the inner wall of the plasma bag, so as to separate the frozen plasma clot from the inner wall of the plasma bag. Frozen plasma blocks are extruded from the bag, which takes a long time and is inefficient; 2. During the process of cutting the plasma bag, if you accidentally scratch your hand, on the one hand, it will bring inconvenience to the operator, and on the other hand, the blood leaking out When it flows onto the plasma clot, it will cause contamination of blood products; 3. During the process of cutting the plasma bag, the operator's hand repeatedly touches the outer wall of the plasma bag. If the plasma clot is accidentally touched, it is easy to cause contamination of blood products.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a parallel air-blown plasma bag breaking method, which is based on the parallel air-blown plasma bag breaking system, and solves the problem of low efficiency of manual operation of plasma bag breaking. There are safety risks and the problem of easily causing contamination of blood products.

The technical scheme of the present invention is: a parallel air-blown plasma bag breaking method, based on a parallel air-blown plasma bag breaking system, the method realizes automatic bag breaking of frozen plasma bags, automatic discharge of plasma after bag breaking and automatic automatic empty plasma bag breaking. collect;

The parallel air-blown plasma bag breaking system includes a plasma bag feeding assembly, a plasma bag breaking assembly, an empty bag recovery assembly and a drop collection kit;

The blood bag feeding assembly includes a bracket A, a belt conveyor, a tray, a lifting drive device, a lifting platform, a translational conveying device and a lifter; the bracket A is fixed on the ground; the belt conveyor is directly or indirectly fixedly installed on the On the bracket A, there is a linear conveying path for transporting the plasma bags; a plurality of trays are arranged at intervals on the linear conveying path of the belt conveyor; the tray includes a rectangular bottom plate and is connected at the edge of the bottom plate and extends above the bottom plate The four sides of the tray are respectively provided with two notches on the two opposite sides of the tray, and there are four notches in total. It is interconnected with the horizontal gap; the four gaps can be used for the lower ends of the four half claw bodies in a pair of lifting units to extend into them; the lifting platform is movably installed on the bracket A through the lifting driving device, and is located at the upper end of the tray, and the lifting platform is The lift drive device is driven to perform vertical lifting movement; the lifter is movably installed at the lower end of the lifting platform through the translation conveying device, and is driven by the translation conveying device to perform horizontal reciprocating linear movement, and then change between the bag taking position and the bag feeding position ; The lifting device is provided with a plurality of supporting and lifting stations arranged horizontally side by side, which can take a group of blood plasma bags from a plurality of trays at one time through a plurality of supporting and lifting stations; when the lifting device is in the bag taking position , all the lifting stations are facing up and down with multiple trays and correspond one-to-one. They are used to take a group of blood plasma bags from multiple trays at one time. When the lifting device is in the bag feeding position, all the supporting The lift station and all the trays are staggered up and down, and it is used to transfer a set of blood bags taken out to the blood bag breaking bag assembly; the lifter includes a base and a lift unit; the base is fixedly connected to the translational transport The lower end of the connecting block of the device; the lifting unit is arranged at the lower end of the base, and there are multiple pairs of lifting units, each pair of lifting units includes two opposite lifting units; the lifting unit includes a finger cylinder and a half claw body; One end of the finger cylinder is fixedly installed at the lower end of the base, and the other end is provided with two power rods. The two power rods can only move synchronously toward each other or move back synchronously; On the two power rods of the hoist, thus forming a lifting port between the two half claw bodies; the two lifting ports in a pair of lifting units are arranged opposite to each other and form a lifting station;

The blood bag breaking assembly includes a bracket B, a chain conveyor, a bag clamp, a tube cutting device, a bag cutting device and an air blowing device; the bracket B is fixed on the ground; the chain conveyor is directly or indirectly fixed and installed on the bracket On B, there are a plurality of rotary movement paths spaced in the horizontal direction and arranged in parallel on it, and the rotary movement paths are in the vertical plane; the plurality of bag holders are respectively fixed and installed at the same arrangement interval and the same installation position On all the rotary moving paths of the chain conveyor, a plurality of bag grippers in the same installation position form a group of bag grippers, and the moving paths of each group of bag grippers are set in sequence. There are a first position, a second position, a third position, a fourth position and a fifth position, so that a group of blood plasma bags clamped by each group of bag clamps pass through the first position, the second position, the third position, The fourth position and the fifth position; when any one group of bag clamps is in the first position, the four adjacent groups of bag clamps in front of its moving direction are respectively in the second position, the third position, the fourth position and the The fifth position; the set of bag grippers in the first position is used to pick up a set of plasma bags from the lifting station of the lifter; the set of bag grippers in the fifth position is used to hold the A set of plasma bags is transferred to the empty bag recovery assembly; the bag clamper includes two bag clamp units; the two bag clamp units are arranged at intervals and fixedly installed on the rotary movement path of the chain conveyor; the bag clamp unit includes a pneumatic nozzle clamp and splint; one end of the pneumatic nozzle clamp is fixedly installed on the rotary movement path of the chain conveyor, and the other end is rotatably connected with two rotating handles. It is fixedly connected to the ends of the two rotating handles of the pneumatic nozzle clamp. The two splints are driven by the two rotating handles to open or close, and the area between the two splints is the clamping opening; The clamping openings are arranged at intervals and form a clamping station. The bag clamper clamps the areas on both sides of the hose of the plasma bag through the two clamping openings arranged at intervals; the tube cutting device is installed on the bracket B, and is connected with The positions of the two sets of blood plasma bags are adapted to each other, and they are used to cut the hoses in the second set of blood bags, so as to form a fracture on each blood bag; the tube cutting device includes a set of pneumatic scissors, pneumatic scissors A set of pneumatic scissors are fixedly installed on the bracket B respectively, and are arranged in a row horizontally at intervals, and a set of pneumatic scissors and a set of bag clamps in the second position form a A corresponding relationship; the corresponding relationship means that each pneumatic scissors extends into the gap between the two gripping openings of the corresponding bag holder; the bag-scribing device is installed on the bracket B, and is in the third position with the The position of a group of blood plasma bags is adapted to the position, and it is used to cut the bag body in the group of blood plasma bags at the third position, so that each blood bag is formed with a cut opening; the bag cutting device includes a bag cutting mechanism and a bag blocking mechanism. ; The bag-scribing mechanism and the bag-blocking mechanism are distributed on both sides of a group of plasma bags in the third position, the bag-scribing mechanism is used to cut the front surface of the plasma bag, and the bag-blocking mechanism is used to abut the rear surface of the plasma bag; The bag-scribing mechanism includes a synchronous belt guide rail and a scribing knife; the synchronous belt guide rail is fixedly installed on the bracket B, on which there is a horizontal reciprocating Linear moving slider, the moving direction of the slider is parallel to the arrangement direction of a group of bag holders; the scriber is fixedly installed on the slider of the synchronous belt guide rail, and the movement path of the scriber is located in a group of the third position. Below the bag holder; the bag blocking mechanism includes a motor, a rotating shaft and a baffle plate; the motor is fixedly installed on the bracket B, and its shaft extends horizontally; one end of the rotating shaft is movably installed at the lower end of the bracket B, and the other end is connected with the shaft of the motor; The baffle is fixedly installed on the rotating shaft, which is driven and rotated by the rotating shaft to switch between the erect state and the down state. When the baffle is in the erect state, it is used to abut the rear of a group of plasma bags in the third position. Surface, when the baffle is in the down state, it avoids the moving path of a group of blood bags; the insufflation device is installed on the bracket B, and is adapted to the position of the group of blood bags in the fourth position; its use blowing air to the fracture in a group of blood plasma bags at the fourth position, so that the blood clots in each blood bag are discharged from the opening of the blood plasma bag; the air blowing device includes a lift driving cylinder and an air blow pipe; a group of The lift driving cylinders are respectively fixed and installed on the bracket B, and are arranged horizontally in a row at intervals. The piston rods of all lift driving cylinders extend vertically downward; a set of blowing pipes are respectively fixed and connected to the piston rods of a set of lift driving cylinders. , and arranged horizontally in a row at intervals, each blowing pipe corresponds to a lifting driving cylinder; the lower end of the blowing pipe is in the shape of a flared mouth, and the upper end of the blowing pipe is connected to the compressed air source; Switching between the docking state and the avoidance state, when the insufflation device is in the docking state, the group of insufflation tubes contains the fractures in the group of plasma bags at the fourth position through the lower port of each insufflation tube , each insufflation tube corresponds to a plasma bag; when the insufflation device is in the avoidance state, a group of insufflation tubes is located directly above a group of plasma bags in the fourth position;

The empty bag recovery assembly includes a bracket C, a chain conveyor and an empty bag pushing device; the bracket C is fixedly arranged on the ground; the chain conveyor is directly or indirectly fixedly installed on the bracket C, and a The rotary transmission path is provided with a receiving section, a draining section and a push-out section in sequence, and a horizontally arranged thorn nail row is arranged on the rotary transmission path, and the thorn nail row circles the rotary transmission path and extends out of the rotary transmission path Out, the thorn nail row includes a plurality of thorn nails arranged at intervals; the chain conveyor drives the thorn nails to move along the rotary transmission path and passes through the receiving section, the draining section and the pushing section in turn; the thorn nails in the receiving section and the thorn nails in the first A group of blood bags at five positions are arranged close to each other and correspond one-to-one; the thorns in the push-out section are opposite to the empty bag push-out device; the empty-bag push-out device includes a hydraulic cylinder and a push plate; the hydraulic cylinder is directly or indirectly fixedly installed on the bracket C The piston rod extends horizontally and is fixedly connected with the push plate; when the piston rod of the hydraulic cylinder is retracted, the push plate avoids the moving path of the thorn row, and when the piston rod of the hydraulic cylinder extends, it is used for one All blood bags collected on the spikes in the ejection section at the sexual ejection section;

The drop collection kit includes a plasma collection tank, a hose collection box, a residual liquid collection tank and an empty bag collection box; the plasma collection tank is fixed on the ground and located directly below the pipe cutting device, bagging device and air blowing device , there is a plasma outlet on one side; the hose collection box is movably installed on the bracket B, and is located directly below the tube shearing device and above the plasma collection tank, with a drain hole at the bottom; the residual liquid collection tank is fixedly installed in On the ground, and located just below the receiving section and draining section of the rotary conveying path; the empty bag collection box is movably installed on the bracket C, and is located just below the pushing out section of the rotary conveying path; the empty bag pushing out device includes a hydraulic cylinder and a pusher. plate; the hydraulic cylinder is directly or indirectly fixedly installed on the bracket C, and its piston rod extends horizontally and is fixedly connected with the push plate; when the piston rod of the hydraulic cylinder is retracted, the push plate avoids the moving path of the thorn row, and when the hydraulic pressure When the piston rod of the cylinder is extended, it is used to push out all the blood bags collected on the spikes in the push-out section at one time;

Before performing the blood bag breaking operation, the parallel air-blown plasma bag breaking system is in the initial state, in the initial state:

a. The lifting platform is at the upper end of its moving stroke;

b. The lifter is in the position of taking out the bag;

c. The openings of all the lifting openings in the lifting device are opened to the maximum;

d. All clamping ports in a group of bag clamps in the first position are opened;

e. All cutting ports in the pipe cutting device are opened;

f. The cutting knife of the bag cutting mechanism moves to one end of the synchronous belt guide rail;

g. The baffle in the bag blocking mechanism is in the down state;

h. The air blowing device is in the avoidance state;

i. The piston rod of the hydraulic cylinder is retracted so that the push plate avoids the movement path of the thorn;

The method of breaking the blood bag is as follows:

S01, the lifter lifts the blood bag from the tray:

a. Place at least one set of plasma bags on multiple consecutive trays and ensure that only one plasma bag is placed on each tray;

b. The lift drive device drives the lift table and the lifter to descend, so that all the lift stations in the lifter contain a group of blood bags on multiple continuous trays;

c. The action of the finger cylinder in the lifter drives the two power rods on each finger cylinder to move synchronously towards each other, and the four half claw bodies included in each pair of lifter units respectively extend into the four gaps of the corresponding tray. , so that a pair of lifting units hooks a pack of blood bags from all directions;

d. The lift drive device drives the lift table and the lifter to rise, so that a group of blood bags picked up by the lifter is flush with a group of bag clamps in the first position and corresponds one-to-one;

Before the start of sub-step a in this step, the plasma bag is a cleaned frozen plasma bag;

When sub-step c of this step is completed, the lifter lifts up a group of plasma bags from a plurality of continuous trays;

When the step d of this step is completed, the one-to-one correspondence means that the sides of the plasma bag located on both sides of the hose face the two gripping ports of the bag gripper respectively;

S02, the bag clamper clamps the plasma bag from the lifter:

a. The translational conveying device drives the lifter to move from the bag-receiving position to the bag-feeding position; when the lifter moves to the bag-feeding position, a group of blood bags picked up by the lifter and a group of clips in the first position The pockets are kept flush and correspond one-to-one;

b. The pneumatic nozzle clamp in a group of bag clamps in the first position acts to clamp a group of plasma bags on the lifter;

c. The finger cylinder in the lifter moves to release the set of blood bags that it holds; then, the translational conveying device drives the lifter to move from the bag delivery position to the bag retrieval position, so that the lifter is ready to hold the bag. Preparation of the next set of plasma bags;

In sub-step a of this step, the one-to-one correspondence means that the sides of the plasma bag located on both sides of the hose extend into the two clamping ports of the corresponding bag clamper respectively;

When sub-step b of this step is completed, the position where the bag clamper clamps the plasma bag is located on the sides of the two sides of the hose of the plasma bag;

S03, the tube cutting device cuts the hose of the plasma bag:

a. The chain conveyor is activated to move a group of bag grippers in the first position and a group of blood bags clamped by them to the second position;

b. A group of pneumatic scissors included in the tube cutting device act synchronously to cut all the tubes of the blood bag in the second position; the tubes fall into the tube collection box immediately, and the ice in the tube After the plasma melts and flows out of the hose, it drips into the plasma collection pool through the drain hole at the bottom of the hose collection box;

When sub-step a of this step is completed, a set of pneumatic scissors included in the pipe cutting device forms a one-to-one correspondence with a set of bag grippers in the second position, and the corresponding relationship means that each pneumatic scissors extend into between the two gripping openings of the corresponding bag gripper;

S04, the bag scratching device scratches the outer wall of the plasma bag:

a. The chain conveyor is activated to move a group of bag grippers in the second position and a group of blood bags clamped by them to the third position;

b. The motor of the bag blocking mechanism is started, and the baffle is driven to rotate from the down state to the upright state, so as to abut the rear surface of a group of plasma bags in the third position;

c. The synchronous belt guide rail of the bag-scribing mechanism is activated, and the scribing knife is driven to move from one end of the synchronous belt guide rail to the other end, and the front surface of a group of plasma bags in the third position is cut;

d. The motor of the bag blocking mechanism is started, and the baffle is driven to rotate from the erected state to the downed state, thereby avoiding the path of the subsequent movement of the plasma bag;

When sub-step a of this step is completed, a group of blood plasma bags in the third position is adapted to the position of the bag-scribing device, that is, between the bag-scribing mechanism and the bag blocking mechanism;

In sub-step c of this step, when the scribing knife cuts through the plasma bag, the rear surface of the plasma bag is pressed against the baffle plate, thereby ensuring that the piercing force of the scribing knife is sufficient to break the outer wall of the plasma bag;

S05, the blowing device blows out the ice-shaped plasma clot in the plasma bag:

a. The chain conveyor is started, so that a group of bag grippers in the third position and a group of blood bags clamped by them move from the third position to the fourth position;

b. The piston rods of a group of lift driving cylinders in the air blowing device are extended, so that the air blowing device is switched from the avoidance state to the docking state; when the air blowing device is in the docking state, the lower port of a group of air blowing pipes will be in the docking state. The fractures in a set of blood bags in the fourth position are contained;

c. Start the compressed air source, a certain pressure of compressed air is blown out from the lower end of the air blowing pipe, and then enters the plasma bag through the fracture at the upper end of the plasma bag, and finally is discharged from the cut opening at the lower end of the plasma bag; in the above process, the compressed air enters the inside of the plasma bag When the inner wall of the plasma bag is separated from the ice-shaped plasma, when the compressed air is discharged from the plasma bag, the slit at the lower end of the plasma bag is opened, so that the ice-shaped plasma in the plasma bag is discharged from the slit of the plasma bag. fall into the plasma collection pool;

When sub-step a of this step is completed, a group of blood plasma bags located at the fourth position is located directly below the insufflation device;

S06, the bag gripper transfers the plasma bag to the chain conveyor:

a. The chain conveyor is started, so that the group of bag grippers in the fourth position and the group of blood bags held by them move from the fourth position to the fifth position; The thorns in the receiving section are arranged close to each other and correspond one-to-one, so when the plasma bag reaches the fifth position, it is punctured on the corresponding thorns;

b. The pneumatic nozzle clamp in a group of bag clamps at the fifth position moves to separate the two splints connected to the two rotating handles of the pneumatic nozzle clamp, so that the bag clamp releases the corresponding plasma bag, thereby Transfer a set of empty plasma bags to the spikes in the receiving section;

S07, the empty bag ejection device unloads the empty plasma bag on the chain conveyor:

a. Whenever the thorns on the receiving section collect a predetermined number of empty blood plasma bags, the chain conveyor drives the rotary transmission path to move forward a section, so that the thorns in the receiving section move to the draining section, so that the The spikes in the push-out section move to the receiving section;

b. Every time the rotary transmission path moves forward for a section, the hydraulic cylinder piston rod of the empty bag pushing device performs a telescopic action. When the hydraulic cylinder piston rod is stretched out, the empty blood bag moved to the pushing section will be all at one time through the push plate. Push out, the pushed out empty blood plasma bag falls into the empty bag collection box, waiting for centralized dumping processing, when the hydraulic cylinder piston rod retracts, it avoids the moving path of the thorn;

In this step, when the empty plasma bag is in the receiving section or the draining section, the residual plasma in the plasma bag drips downward and is collected by the residual liquid collection tank. When the thorn in the push-out section returns to the receiving section, it is used for receiving A set of empty plasma bags.

A further technical solution of the present invention is that: the chain conveyor is provided with n sprockets uniformly distributed in a ring shape and chains wound between the n sprockets, the chains are on a horizontal plane and rotate to form a rotary transmission path, n sprockets divide the revolving transmission path into n sections of equal length and form a circle, the receiving section and the pushing section are the two connected sections of the n sections, the draining section is the n sections except the receiving section Segments other than segments and push-out segments; n ≥ 3.

A further technical solution of the present invention is: when step b of step S03 is completed, the length of the hose remaining on the blood plasma bag is 8-12 mm.

A further technical solution of the present invention is: when step c of step S04 is completed, the scribe on the plasma bag is a horizontal line, extending from one side of the plasma bag to the other side, and located 1-2 cm above the lower edge of the plasma bag within the segment.

A further technical solution of the present invention is: in step c of step S05, when the capacity of the plasma bag is 550-650ml, the corresponding blowing time is 5-8s, and the corresponding air pressure is not less than 1.05MPa.

A further technical solution of the present invention is: in step a of step S06, the position where the spikes pierce the plasma bag is located on the center line of the plasma bag in the vertical direction, and is 0.45-0.55h away from the lower edge of the plasma bag, and h is the plasma bag The distance from the top edge to the bottom edge.

A further technical solution of the present invention is: the scribing knife includes a knife seat, a knife body and a spring; a slideway and an installation cavity are arranged inside the knife base, one end of the slideway is communicated with the installation cavity, and the other end penetrates to the outer wall of the knife base; the knife body One end is slidably installed in the slideway of the knife seat, and the other end protrudes outside the knife seat; the spring is compressed and arranged in the installation cavity of the knife seat, and its two ends are respectively in contact with the wall surface of the installation cavity of the knife seat and the end of the knife body. The knife body is forced against the wall surface of the installation cavity of the knife seat by elastic force; the scribe knife is fixedly installed on the slider of the synchronous belt guide rail, so that the knife body and the horizontal plane form an included angle of 45°.

A further technical solution of the present invention is: the blood bag breaking assembly further includes a pneumatic rotary joint; a plurality of pneumatic rotary joints are respectively fixed and installed on the bracket B, and are arranged in a row at intervals, and each pneumatic rotary joint is a rotary joint respectively. All bag clamps set on the moving path are supplied with air to avoid entanglement of the air supply pipeline of the bag clamp during the rotary movement.

Compared with the prior art, the present invention has the following advantages:

1. It realizes the automatic breaking of the frozen plasma bag, the automatic discharge of plasma after the bag is broken, and the automatic collection of the empty plasma bag, which greatly improves the efficiency of the operation of breaking the plasma bag, and effectively avoids the pollution and operation of blood products that may be caused by manual operation. personnel safety risks.

2. During its operation, five groups of plasma bags in the first position, the second position, the third position, the fourth position and the fifth position act synchronously. Cut the hose of the plasma bag at the third position, cut the outer wall of the plasma bag at the third position, blow out the contents of the plasma bag at the fourth position, and unload the empty plasma bag at the fifth position. higher.

3. It blows air into the fracture of the hose of the plasma bag through the air blowing device. While the gas separates the ice-shaped plasma from the inner wall of the plasma bag, it opens the slit of the plasma bag to facilitate the ice-shaped plasma from the plasma bag. Quick discharge from the cut. This separation and discharge method has good reliability and repeatability. When the blowing pressure reaches a certain value, it can 100% ensure that the ice cube-shaped plasma is discharged from the cut of the plasma bag.

4. The spring set inside the scribing knife has the function of automatically fitting the knife body to the outer surface of the plasma bag, avoiding the occurrence of adhesion in the scribing part, which leads to poor subsequent discharge of plasma clots, and has good reliability and repeatability.

5. The interval time for the chain conveyor to move forward one step is a, and the draining time required for the empty plasma bag to enter the chain conveyor is b. According to the above two parameters, the sprocket of the chain conveyor can be adaptively designed After entering the chain conveyor, the plasma bag can reach the push-out section through multiple movements (the interval of each movement is a), so as to achieve a sufficient draining effect.

The present invention will be further described below with reference to figures and embodiments.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of blood plasma bag feed assembly;

Figure 3 is a schematic diagram of the structure of the lift drive device;

Figure 4 is a schematic structural diagram of a translational conveying device;

Fig. 5 is a schematic diagram of the cooperation relationship between the lift drive device and the translational conveying device;

Fig. 6 is the structural representation of the tray;

FIG. 7 is a schematic structural diagram of a blood plasma bag breaking bag assembly;

FIG. 8 is a positional relationship diagram of the tube cutting device and the plasma bag in the second position;

9 is a positional relationship diagram of the bagging device and the blood plasma bag at the third position;

Figure 10 is a positional relationship diagram of the insufflation device and the blood plasma bag at the fourth position;

Fig. 11 is a positional relationship diagram of the thorn row and the blood plasma bag at the fifth position;

Figure 12 is a schematic structural diagram of an empty bag recovery assembly.

Legend Description: Bracket A11; Belt Conveyor 12; Tray 13; Notch 131; Motor B141; Case 142; Screw B143; Worm 144; Worm Gear 145; ; stepping motor A164; base 171; finger cylinder 172; half claw body 173; bracket B21; chain conveyor 22; pneumatic nozzle clamp 232; splint 233; pneumatic scissors 241; seat 2521; cutter body 2522; motor 253; shaft 254; baffle plate 255; lift drive cylinder 261; blowing pipe 262; pneumatic rotary joint 27; bracket C31; chain conveyor 32; Section 323; Thorn 325; Hydraulic cylinder 331; Push plate 332; Plasma collection tank 41;

Detailed ways

Example 1:

As shown in Figure 1-12, the parallel air-blown plasma bag breaking system includes a plasma bag feeding assembly, a plasma bag breaking assembly, an empty bag recovery assembly and a drop collection kit.

The plasma bag feeding assembly includes a bracket A11, a belt conveyor 12, a tray 13, a lift drive device, a lift table 15, a translational conveying device and a lifter.

The bracket A11 is fixed on the ground.

The belt conveyor 12 is directly or indirectly fixedly installed on the bracket A, and a linear conveying path for transporting the blood plasma bag is provided on it (the linear conveying path is the upper surface of the conveyor belt of the belt conveyor 12 ).

A plurality of trays 13 are arranged at intervals on the linear conveying path of the belt conveyor. The tray 13 includes a rectangular bottom plate and four sides connected to the edge of the bottom plate and extending above the bottom plate. Two notches 131 are respectively provided on the two opposite sides of the tray 13, and there are four notches 131 in total. The vertical notch on the side of the tray 13 and the horizontal notch on the bottom plate of the tray are formed, and the vertical notch and the horizontal notch communicate with each other. The four notches 131 can be used for the lower ends of the four half-claw bodies 173 in the pair of lifting units to extend into them.

The lift drive device includes a stepper motor B141 and a power steering box. The power steering box includes a casing 142 , a screw B143 , a worm 144 and a worm wheel 145 . The casing 142 is fixedly installed on the bracket A11, which is provided with a screw mounting hole, a worm mounting hole and a worm wheel mounting cavity. The screw mounting holes are arranged vertically and pass through the upper and lower ends of the casing 142, and the worm mounting holes are horizontal The turbine mounting cavity is connected with the screw mounting hole and the worm mounting hole respectively. The screw B143 is installed in the screw mounting hole of the box shell 142, its two ends protrude from the upper and lower ends of the box shell 142 respectively, its lower end is fixedly connected with the lifting platform 15, and its upper end is a free end (not connected with other components). touch). The worm 144 is rotatably mounted in the worm mounting hole of the casing 142 . A threaded hole is provided in the middle of the worm wheel 145, and the worm wheel 145 is threadedly connected to the lead screw B143 through the threaded hole, engages with the worm screw 144, and is located in the worm wheel installation cavity. The number of power steering boxes is two, the worm mounting holes of the two power steering boxes are arranged oppositely, and the worms 144 of the two power steering boxes are connected together by a coupling (or the worms 144 of the two power steering boxes are One piece). The stepping motor B141 is fixedly installed on the bracket A11, and its shaft is connected with the worm 144 to drive the worm 144 to rotate. The worm 144 drives the worm wheel 145 to rotate through the meshing relationship with the worm wheel 145, and the worm wheel 145 is driven by the threaded connection relationship with the screw B143. The screw B143 moves vertically up and down, and the screw B143 drives the lift table 15 to move vertically through the fixed relationship with the lift table 15 .

The lift table 15 is fixedly connected to the lower ends of the two screw rods B143 of the lift drive device, and is located at the upper end of the tray 13 .

The translational conveying device includes a screw rod A161, a guide rod 162, a connecting block 163 and a stepping motor A164. The screw A161 is arranged horizontally and is located at the lower end of the lifting platform 15, and its two ends are respectively movably installed on the lifting platform 15. Both ends are fixedly connected to the lifting platform 15 respectively. The connecting block 163 is provided with threaded holes and two sets of light holes distributed on both sides of the threaded holes. The connecting block 163 is threadedly connected with the screw A161 through the threaded holes, and the connecting block 163 forms a sliding movement with the two sets of guide rods 162 through the two sets of light holes. Cooperate. The stepping motor A164 is fixedly installed on the lift table 15, and its shaft is connected with the end of the screw A1 to drive the screw A to rotate, thereby driving the connecting block 163 to move horizontally and linearly along the screw A161.

The lifter includes a base 171 and a lift unit. The base 171 is fixedly connected to the lower end of the connecting block 163 of the translational conveying device, and moves horizontally and linearly with the synchronous movement of the connecting block 163 . The lifting units are arranged at the lower end of the base 171 , and there are a plurality of pairs of the lifting units, and each pair of lifting units includes two opposite lifting units. The lifting unit includes a finger cylinder 172 and a half claw body 173 . One end of the finger cylinder 172 is fixedly installed on the lower end of the base 171 , and the other end is provided with two power rods, and the two power rods can only move toward each other synchronously or move backwards synchronously. The two half-claw bodies 173 are arranged opposite to each other and are respectively fixedly connected to the two power rods of the finger cylinder 172 , so that a lifting port 174 is formed between the two half-claw bodies 173 . The two lifting ports 174 in a pair of lifting units are arranged opposite to each other and form a lifting station. A plurality of pairs of supporting and lifting units form a plurality of supporting and lifting stations arranged horizontally side by side. The lifter lifts a group of blood bags from multiple trays 13 at one time through a plurality of lift stations. The lifter moves horizontally and reciprocally with the synchronous movement of the connecting block 163, and then changes between the bag taking position and the bag feeding position. When the lifter is in the bag taking position, all the lift stations and multiple The (continuously arranged) trays 13 face each other up and down and correspond one by one. When the lifter is in the bag feeding position, all the lift stations and all the trays 13 are staggered up and down.

The blood bag breaking assembly includes a bracket B21, a chain conveyor 22, a bag clamp, a tube cutting device, a bag cutting device and an air blowing device.

The bracket B21 is fixed on the ground.

The chain conveyor 22 is directly or indirectly fixedly installed on the bracket B21, and a plurality of sprocket chain pairs spaced and arranged in parallel along the horizontal direction are arranged on it, and the chains in each sprocket chain pair are in a vertical plane. Thereby, a plurality of revolving moving paths spaced in the horizontal direction and arranged in parallel are formed, and all the revolving moving paths are in the vertical plane.

The multiple bag grippers are respectively fixedly installed on all the revolving moving paths of the chain conveyor at the same arrangement interval and the same installation position, and are driven and moved by the chain conveyor 22 . On all the rotary movement paths, a plurality of bag holders in the same installation position form a group of bag holders, and the moving paths of each group of bag holders are sequentially provided with a first position, a second position, a third position, a The fourth position and the fifth position, so that a group of blood plasma bags gripped by each group of bag grippers pass through the first position, the second position, the third position, the fourth position and the fifth position in sequence. When any one group of bag clamps is in the first position, the four adjacent groups of bag clamps in front of the moving direction thereof are respectively in the second position, the third position, the fourth position and the fifth position. When a set of bag grippers is in the first position, it is used to grip a set of plasma bags from the lift station of the lifter (each bag gripper grips a pack of plasma from one lift station bag). When the set of bag grippers is in the fifth position, it is used to transfer the set of plasma bags it holds onto the empty bag recovery assembly.

The bag holder includes two bag holders. The two bag clamping units are arranged and fixedly installed on the rotary movement path of the chain conveyor 22 . The bag clamping unit includes a pneumatic nozzle clamp 232 and a clamping plate 233 . One end of the pneumatic nozzle clamp 232 is fixedly installed on the rotary movement path of the chain conveyor 22, and the other end is rotatably connected with two rotating handles, and the two rotating handles can only be rotated in the opposite direction or in the opposite direction. The two splints 233 are respectively fixedly connected to the ends of the two rotating handles of the pneumatic nozzle clamp 232. The two splints 233 are driven by the two rotating handles to open or close, and the area between the two splints 233 is the clamping port. . The two clamping openings in the bag clamper are arranged at intervals to form a clamping station, and the bag clamper clamps the areas on both sides of the tube of the plasma bag through the two clamping openings arranged at intervals.

The tube cutting device is installed on the bracket B21 and is adapted to the position of the group of blood bags in the second position, and is used for cutting the hoses in the group of blood bags in the second position, so that each blood bag is form a fracture. The pipe cutting device includes a set of pneumatic scissors 241, and one end of the pneumatic scissors 241 is provided with a cutting opening that can be opened and closed. A group of pneumatic scissors 241 are respectively fixed and installed on the bracket B21, and are arranged in a row horizontally at intervals. The corresponding relationship means that each pneumatic scissors 241 extends into the gap between the two gripping ports of the corresponding bag gripper, and it cuts the hose of the plasma bag through the opening and closing action of the cutting port, which cuts the plasma when cutting the plasma. At the same time, the hose of the bag does not interfere with the plasma bag and the bag holder.

The bag cutting device is installed on the bracket B21 and is adapted to the position of a group of blood plasma bags in the third position, and is used for cutting the bag bodies in the group of blood plasma bags in the third position, so that each blood bag is A notch is formed. The bagging device includes a bagging mechanism and a bag blocking mechanism. The bag-scribing mechanism and the bag-blocking mechanism are distributed on both sides of the group of plasma bags in the third position, the bag-scribing mechanism is used for cutting the front surface of the plasma bag, and the bag-blocking mechanism is used for pressing against the rear surface of the plasma bag. The bag scoring mechanism includes a timing belt guide 251 and a scoring knife 252 . The synchronous belt guide rail 251 is fixedly installed on the bracket B21, and there is a slider for horizontal reciprocating linear movement, and the moving direction of the slider is parallel to the arrangement direction of a group of bag holders. The scriber 252 is fixedly installed on the slider of the synchronous belt guide rail 251, and the moving path of the scriber 252 is located below a group of bag holders at the third position. The bag blocking mechanism includes a motor 253 , a rotating shaft 254 and a baffle 255 . The motor 253 is fixedly mounted on the bracket B21 with its shaft extending horizontally. One end of the rotating shaft 254 is movably installed on the lower end of the bracket B21 , and the other end is connected with the shaft of the motor 253 . The baffle 255 is fixedly installed on the rotating shaft 254, and is driven and rotated by the rotating shaft 254 to switch between the erected state and the downed state. When the baffle 255 is in the erected state, it is used to abut a group of the third position. The rear surface of the plasma bag, when the baffle 255 is in the down position, avoids the travel path of a set of plasma bags.

The insufflation device is mounted on the bracket B21 and is adapted to the position of the set of blood bags in the fourth position. It is used to blow air into the slits in the set of plasma bags in the fourth position, so that the plasma clot in each plasma bag is expelled from the slit of that plasma bag. The blowing device includes a lift driving cylinder 261 and a blowing pipe 262 . A group of lift driving cylinders 261 are respectively fixed and installed on the bracket B21, and are arranged horizontally in a row at intervals, and the piston rods of all lift driving cylinders 261 extend vertically downward. A group of blowing pipes 262 are respectively fixedly connected to the piston rods of a group of lift driving cylinders 261 , and are arranged in a row horizontally at intervals. Each blowing pipe 262 corresponds to one lift driving cylinder 261 . The lower end of the air blowing pipe 262 is in the shape of a flared mouth, and the upper end of the air blowing pipe 262 is communicated with the compressed air source. The piston rod of the lift driving cylinder 261 expands and contracts to switch the air blowing device between the docking state and the avoiding state. When the insufflation device is in the docking state, the group of insufflation tubes 262 contain the fractures in the group of plasma bags at the fourth position through the lower port of each insufflation tube 262, and each insufflation tube 262 corresponds to A blood bag. When the insufflation device is in the avoidance state, a set of insufflation tubes 262 is located directly above the set of blood bags in the fourth position.

The empty bag recovery assembly includes a bracket C31, a chain conveyor 32 and an empty bag ejection device.

The bracket C31 is fixed on the ground.

The chain conveyor 32 is directly or indirectly fixedly installed on the bracket C31, and is provided with a rotary transmission path in the horizontal plane. A horizontally arranged thorn row is arranged on the path, and the thorn row surrounds the rotary transmission path and protrudes out of the rotary transmission path. On the slewing transmission path, the other end is perpendicular to the slewing transmission path and protrudes to the horizontal outer side of the slewing transmission path. The chain conveyor 32 drives the spikes 325 to move along the revolving transport path and pass through the receiving section 321 , the draining section 322 and the pushing section 323 in sequence. The spikes 325 in the receiving section 321 are arranged in close proximity to and in a one-to-one correspondence with the set of blood bags in the fifth position. The thorns 325 in the push-out section 323 are positioned opposite to the empty bag push-out device.

The empty bag ejection device is fixedly mounted on the bracket C31, and is arranged next to the ejection section 323 of the revolving conveying path. The empty bag ejecting device includes a hydraulic cylinder 331 and a push plate 332 . The hydraulic cylinder 331 is directly or indirectly fixedly installed on the bracket C31 , and its piston rod extends horizontally and is fixedly connected with the push plate 332 . When the piston rod of the hydraulic cylinder 331 is retracted, the push plate 332 avoids the moving path of the thorns 325. When the piston rod of the hydraulic cylinder 331 is extended, it is used to push out the thorns 325 in the push-out section 323 at one time. Collect all plasma bags.

The drop collection kit includes a plasma collection tank 41 , a hose collection box 42 , a residual liquid collection tank 43 and an empty bag collection box 44 . The plasma collection pool 41 is fixedly installed on the ground, and is located directly below the pipe cutting device, the bag drawing device and the air blowing device, and a plasma outlet is provided on one side thereof. The hose collection box 42 is movably installed on the bracket B21, and is located directly below the tube cutting device and above the plasma collection pool 41, which is used to collect the tube of the plasma bag cut by the tube cutting device, and its bottom is provided with a drain. hole. The residual liquid collecting tank 43 is fixedly installed on the ground, and is located directly below the receiving section 321 and the draining section 322 of the rotary transmission path, and is used for collecting residual plasma drained from the empty bag of the plasma bag. The empty bag collection box 44 is movably installed on the bracket C31 and is located just below the push-out section 323 of the rotary transmission path, and is used to collect the empty blood bags pushed out by the empty bag push-out device.

Preferably, the scoring knife 252 includes a knife seat 2521, a knife body 2522 and a spring. A slideway and an installation cavity are provided inside the knife seat 2521 , one end of the slideway communicates with the installation cavity, and the other end penetrates to the outer wall surface of the knife seat 2521 . One end of the knife body 2522 is slidably installed in the slideway of the knife seat 2521 , and the other end protrudes outside the knife seat 2521 . The spring is compressed and arranged in the installation cavity of the knife seat 2521, and its two ends are respectively abutted against the wall of the installation cavity of the knife seat 2521 and the end of the knife body 2522, and the spring force forces the knife body 2522 against the wall of the installation cavity of the knife seat 2521; The scribing knife 252 is obliquely and fixedly installed on the slider of the synchronous belt guide rail 251, so that the knife body 2522 forms an included angle of 45° with the horizontal plane.

Preferably, the blood bag breaking assembly further includes a pneumatic rotary joint 27 . A plurality of pneumatic rotary joints 27 are respectively fixed and installed on the bracket B21, and are arranged horizontally in a row. The pipe is tangled during the swivel movement.

Preferably, the chain conveyor 32 is provided with n (n≥3) sprockets uniformly distributed in a ring shape and a chain wound between the n sprockets. , n sprockets divide the rotary transmission path into n segments of equal length and encircling a circle, the receiving segment 321 (for receiving the empty plasma bag) and the push-out segment 323 (for unloading the empty plasma bag) are respectively The two connected sections in the n sections, the drain section 322 (for draining the residual blood in the plasma bag) are other sections in the n sections except the receiving section 321 and the pushing section 323 . Based on this structure, the number of sprockets can be adaptively set according to the draining time of the blood plasma bags and the interval time of each group of blood plasma bags entering the chain conveyor 32, so that the blood plasma bags can be fully drained. For example, it takes 59s to drain the plasma bags after entering the chain conveyor 32 , and the interval time between each group of plasma bags entering the chain conveyor 32 is 20s, then setting n=4, the plasma bags can enter the chain conveyor 32 After 3 moves (20s×3=60s), it reaches the push-out section, so as to achieve a sufficient draining effect.

A plasma bag breaking method is applied to the above-mentioned parallel air-blown plasma bag breaking system. Before performing the plasma bag breaking operation, the parallel air-blown plasma bag breaking system is in an initial state, and in the initial state:

a. The lifting platform 15 is at the upper end of its moving stroke;

b. The lifter is in the position of taking out the bag;

c. The openings of all the lifting openings in the lifting device are opened to the maximum;

d. All clamping ports in a group of bag clamps in the first position are opened;

e. All cutting ports in the pipe cutting device are opened;

f. The scribing knife 252 of the bag scribing mechanism moves to one end of the synchronous belt guide rail 251;

g. The baffle plate 255 in the bag blocking mechanism is in a down state;

h. The air blowing device is in the avoidance state;

i. The piston rod of the hydraulic cylinder 331 is retracted, so that the push plate 332 avoids the moving path of the thorn 325 .

The bag breaking operation is as follows:

S01, the lifter lifts the blood bag from the tray:

a. Place at least one group of plasma bags on a plurality of consecutive trays 13, and ensure that only one pack of plasma bags is placed on each tray 13;

b. The stepping motor B141 of the elevating drive device is activated, and drives the worms 144 of the two power steering boxes to rotate synchronously. The two worms 144 respectively drive the corresponding meshing worm gears 145 to rotate synchronously, and the two worm gears 145 respectively drive the corresponding screw threads. The rod B143 moves down synchronously, and the two screw rods B143 move down synchronously to drive the lift table 15 and the lifter to descend. When all the lifter stations in the lifter contain a group of plasma bags on the tray 13 , the stepping motor B141 suspends operation;

c. The finger cylinders 172 in the lifter act, and the two power rods of each finger cylinder 172 move synchronously towards each other, so that the lower end of the half claw body 173 extends into the corresponding gap 131 of the corresponding tray 13, thereby making the lifter The opening is reduced to clamp the corresponding blood bag;

d. The stepping motor B141 of the elevating drive device is activated to drive the worms 144 of the two power steering boxes to rotate synchronously. The two worms 144 respectively drive the corresponding meshing worm gears 145 to rotate synchronously, and the two worm gears 145 respectively drive the corresponding screw threads. The rod B143 moves upward synchronously, and the two screw rods B143 move upward synchronously to drive the lift table 15 and the lifter to rise. When a group of plasma bags held by the lifter is flush with a group of bag clamps in the first position, the plasma bags and the bag clamps correspond one-to-one, and the stepping motor B141 stops running.

Before the start of sub-step a in this step, the plasma bag is a washed frozen plasma bag.

When step c of this step is completed, the four half-claw bodies 173 included in each pair of lifting units extend into the four notches 131 of the corresponding tray 13 respectively, so that each pair of lifting units hooks a Pack blood bags.

In sub-step d of this step, each pair of holding and lifting units holds up a pack of blood plasma bags through the four half-claw bodies 173 contained therein.

When the step d of this step is completed, the one-to-one correspondence means that the side of the plasma bag with the hose is facing the clamping station of the bag holder, and the sides of the plasma bag on both sides of the hose are facing each other. Two gripping ports in the gripping station.

S02, the bag clamper clamps the plasma bag from the lifter:

a. The stepper motor A141 of the translational conveying device is activated to drive the lifter to move from the bag taking position to the bag delivery position; when the lifter moves to the bag delivery position, a group of plasma bags picked up by the lifter will be in the same position as the one in the bag. A set of bag grippers in the first position is kept flush, and the plasma bags are in one-to-one correspondence with the bag grippers;

b. The pneumatic nozzle clips 232 in a group of bag grippers at the first position act to close the two splints 233 connected to the two rotating handles of the pneumatic nozzle clips 232, so that the bag grippers are arranged at two intervals The clamping mouth of the corresponding plasma bag is clamped;

c. The finger air cylinders 172 in the lifter act, and the two power rods of each finger cylinder 172 move backwards synchronously, so that the lower end of the half claw body 173 exits the corresponding gap 131 of the corresponding tray 13, thereby making the lifting port The opening is expanded to release the corresponding plasma bag; then, the stepper motor A141 of the translational conveying device is activated to drive the lifter to move from the position of sending the bag to the position of taking the bag, so as to prepare for the next set of plasma bags.

In sub-step a of this step, the one-to-one correspondence means that the sides of the plasma bag located on both sides of the hose respectively extend into the two gripping openings of the corresponding bag gripper.

When sub-step b of this step is completed, a group of bag clampers in the first position clamps a group of plasma bags held on the lifter, and the position where the bag clamper clamps the plasma bags is located at the two sides of the hose of the plasma bag. side edge.

S03, the tube cutting device cuts the hose of the plasma bag:

a. The chain conveyor 22 is activated to move a group of bag grippers in the first position and a group of blood plasma bags held by them to the second position;

b. A group of pneumatic scissors 241 included in the tube cutting device act synchronously to cut all the tubes of the blood bag in the second position; the tubes fall into the tube collection box 42 immediately, and the After the ice-like plasma melts and flows out of the hose, it drips into the plasma collection pool 41 through the drain hole at the bottom of the hose collection box 42 .

When sub-step a of this step is completed, a set of pneumatic scissors 241 included in the pipe cutting device forms a one-to-one correspondence with a set of bag grippers in the second position, and the corresponding relationship refers to each pneumatic scissors 241 Both extend between the two gripping openings of the corresponding bag gripper.

When sub-step b of this step is completed, the length of the hose remaining on the plasma bag is 8-12 mm.

S04, the bag scratching device scratches the outer wall of the plasma bag:

a. The chain conveyor 22 is activated, so that a group of bag grippers in the second position and a group of blood bags clamped by them are moved to the third position;

b. The motor 253 of the bag blocking mechanism is activated, and the baffle plate 255 is driven to rotate from the down state to the upright state, so as to abut the rear surface of a group of blood plasma bags in the third position;

c. The synchronous belt guide rail 251 of the scribing mechanism is activated, and the scribing knife 252 is driven to move from one end of the synchronous belt guide rail 251 to the other end, and the front surface of a group of plasma bags in the third position is cut;

d. The motor 253 of the bag blocking mechanism is activated, and the baffle plate 255 is driven to rotate from the upright state to the down state, thereby avoiding the path of subsequent movement of the plasma bag.

When sub-step a of this step is completed, a group of blood plasma bags in the third position is adapted to the position of the bag-scribing device, that is, between the bag-scribing mechanism and the bag blocking mechanism.

In sub-step c of this step, when the scribe knife 252 passes through the plasma bag, the rear surface of the plasma bag is pressed against the baffle plate 255, thereby ensuring that the piercing force of the scribe knife 252 is sufficient to break the outer wall of the plasma bag.

When sub-step c of this step is completed, the scribe on the plasma bag is a horizontal line, extending from one side of the plasma bag to the other side, and located within a section of 1-2 cm above the lower edge of the plasma bag.

S05, the blowing device blows out the ice-shaped plasma clot in the plasma bag:

a. The chain conveyor 22 is activated, so that a group of bag grippers in the third position and a group of blood bags clamped by them are moved from the third position to the fourth position;

b. The piston rods of a group of lift driving cylinders 261 in the blowing device are extended, so that the blowing device is switched from the avoidance state to the docking state; when the blowing device is in the docking state, the lower port of a group of blowing pipes 262 will The fractures in the set of blood bags in the fourth position are contained;

c. Start the compressed air source, the compressed air with a certain pressure is blown out from the lower end of the air blowing pipe 262, and then enters the plasma bag through the fracture at the upper end of the plasma bag, and finally is discharged from the cut at the lower end of the plasma bag; in the above process, the compressed air enters the plasma bag When inside, the inner wall of the plasma bag is separated from the ice-shaped plasma, and when the compressed air is discharged from the plasma bag, the slit at the lower end of the plasma bag is opened, so that the ice-shaped plasma in the plasma bag is discharged from the slit of the plasma bag. , falls into the plasma collection pool 41 .

When sub-step a of this step is completed, a group of blood plasma bags in the fourth position is adapted to the position of the insufflation device, that is, it is located directly below the insufflation device.

In this step, when the volume of the plasma bag is 550-650ml, the corresponding blowing time is 5-8s, and the corresponding air pressure is not less than 1.05MPa.

S06, the bag gripper transfers the plasma bag to the chain conveyor:

a. The chain conveyor 22 is activated, so that a group of bag grippers in the fourth position and a group of blood plasma bags held by them move from the fourth position to the fifth position; The thorns 325 in the receiving section 321 are arranged next to each other and correspond one-to-one, so when the blood plasma bag reaches the fifth position, it is punctured on the corresponding thorns 325;

b. The pneumatic nozzle clip 232 in a group of bag grippers at the fifth position moves to separate the two splints 233 connected to the two rotating handles of the pneumatic nozzle clip 232, so that the bag gripper releases the corresponding plasma bag, thereby transferring a set of empty plasma bags onto spikes 325 at receiving section 321.

In this step, the position where the spikes 325 pierce the plasma bag is located on the vertical centerline of the plasma bag, and is 0.45-0.55 h away from the lower edge of the plasma bag, where h is the distance from the upper edge to the lower edge of the plasma bag.

S07, the empty bag ejection device unloads the empty plasma bag on the chain conveyor:

a. Every time the thorns 325 on the receiving section 321 collect a predetermined number of empty blood bags, the chain conveyor 32 drives the rotary transmission path to move forward a section, so that the thorns 325 in the receiving section 321 move to the The dry section 322 makes the thorns 325 in the push-out section 323 move to the receiving section 321;

b. Whenever the rotary transmission path moves forward for a period, the hydraulic cylinder 331 piston rod of the empty bag pushing device performs a telescopic action. When the hydraulic cylinder 331 piston rod extends, the empty plasma that is moved to the pushing section 323 will be moved by the push plate 332 The bags are all pushed out at one time, and the pushed out empty plasma bags fall into the empty bag collection box 44 and wait for centralized dumping processing. When the piston rod of the hydraulic cylinder 331 is retracted, the moving path of the thorns 325 is avoided.

In this step, when the empty plasma bag is in the receiving section 321 or the draining section 322, the residual plasma in the plasma bag drops downward and is collected by the residual liquid collecting tank 43, and when the thorn 325 in the pushing section 323 returns to the receiving section 321 hours for receiving a set of empty plasma bags.

Claims (8)

1. The parallel air-blowing type plasma bag breaking method is based on a parallel air-blowing type plasma bag breaking system, and realizes automatic bag breaking of a frozen plasma bag, automatic discharge of plasma after bag breaking and automatic collection of an empty plasma bag;

the parallel air-blowing type plasma bag breaking system comprises a plasma bag feeding assembly, a plasma bag breaking assembly, an empty bag recovery assembly and a falling object collecting kit;

the plasma bag feeding assembly comprises a bracket A, a belt conveyor, a tray, a lifting driving device, a lifting platform, a translation conveying device and a supporting and lifting device; the bracket A is fixedly arranged on the ground; the belt conveyor is directly or indirectly fixedly arranged on the bracket A and is provided with a linear conveying path for conveying a plasma bag; a plurality of trays are arranged on a linear conveying path of the belt conveyor at intervals; the tray comprises a rectangular bottom plate and four side edges which are connected to the edge of the bottom plate and extend upwards the bottom plate, two notches are respectively arranged on two opposite side edges of the tray, and the four notches are totally four notches, each notch consists of a vertical notch arranged on one side edge of the tray and a horizontal notch arranged on the bottom plate of the tray, and the vertical notch is communicated with the horizontal notch; the four notches can allow the lower ends of the four half-side claw bodies in the pair of supporting and lifting units to extend into the notches; the lifting platform is movably arranged on the bracket A through a lifting driving device and is positioned at the upper end of the tray, and the lifting platform is driven by the lifting driving device to vertically lift and move; the lifting device is movably arranged at the lower end of the lifting platform through the translation conveying device and is driven by the translation conveying device to do horizontal reciprocating linear movement, so that the bag taking position and the bag sending position are changed; the lifting device is provided with a plurality of lifting stations which are horizontally arranged in parallel, and a group of plasma bags are lifted from the plurality of trays at one time through the plurality of lifting stations; when the lifting device is positioned at the bag taking position, all the lifting stations are opposite to the plurality of trays up and down and correspond to the plurality of trays one by one, and are used for carrying a group of plasma bags from the plurality of trays at one time; the supporting and lifting device comprises a base and a supporting and lifting unit; the base is fixedly connected to the lower end of a connecting block of the translation conveying device; the supporting and lifting units are arranged at the lower end of the base and are provided with a plurality of pairs, and each pair of supporting and lifting units comprises two supporting and lifting units with opposite positions; the supporting and lifting unit comprises a finger cylinder and a half-side claw body; one end of the finger cylinder is fixedly arranged at the lower end of the base, and the other end of the finger cylinder is provided with two power rods which can only synchronously move in opposite directions or synchronously move in opposite directions; the two half-side claw bodies are oppositely arranged and fixedly connected to two power rods of the finger cylinder respectively, so that a supporting opening is formed between the two half-side claw bodies; two supporting and lifting ports in the pair of supporting and lifting units are oppositely arranged and form a supporting and lifting station;

the plasma bag breaking assembly comprises a bracket B, a chain conveyor, a bag clamp, a tube shearing device, a bag cutting device and an air blowing device; the bracket B is fixedly arranged on the ground; the chain conveyor is directly or indirectly fixedly arranged on the bracket B, a plurality of rotary moving paths which are arranged in parallel at intervals in the horizontal direction are arranged on the chain conveyor, and the rotary moving paths are positioned in a vertical plane; the bag holders are fixedly arranged on all rotary moving paths of the chain conveyor at the same arrangement intervals and the same installation positions respectively, a group of bag holders are formed by the bag holders at the same installation positions on all rotary moving paths, a first position, a second position, a third position, a fourth position and a fifth position are sequentially arranged on the moving path of each group of bag holders, and therefore a group of plasma bags clamped on each group of bag holders sequentially pass through the first position, the second position, the third position, the fourth position and the fifth position; when any one group of bag holders are positioned at the first position, four groups of bag holders adjacent in front of the moving direction of the bag holders are respectively positioned at the second position, the third position, the fourth position and the fifth position; the group of bag holders in the first position is used for clamping a group of plasma bags from the lifting station of the lifting device; a set of bag holders in a fifth position for transferring a set of plasma bags held thereby to the empty bag retrieval assembly; the bag clamping device comprises two bag clamping units; the two bag clamping units are arranged at intervals and fixedly arranged on a rotary moving path of the chain conveyor; the bag clamping unit comprises a pneumatic water gap clamp and a clamping plate; one end of the pneumatic water gap clamp is fixedly arranged on a rotary moving path of the chain conveyor, the other end of the pneumatic water gap clamp is rotatably connected with two rotating handles, and the two rotating handles can only synchronously rotate in opposite directions or synchronously rotate in the opposite directions; the two clamping plates are respectively and fixedly connected to the ends of the two rotating handles of the pneumatic water gap clamp, the two clamping plates are driven by the two rotating handles to open or close, and the area between the two clamping plates is a clamping opening; two clamping ports in the bag clamping device are arranged at intervals to form a clamping station, and the bag clamping device clamps the two side areas of the hose of the plasma bag through the two clamping ports arranged at intervals; the tube shearing device is arranged on the bracket B and is matched with the positions of the group of plasma bags at the second position, and is used for shearing the flexible tubes in the group of plasma bags at the second position to form a fracture on each plasma bag; the pipe shearing device comprises a group of pneumatic scissors, and one end of each pneumatic scissors is provided with a shearing opening capable of opening and closing; the pneumatic scissors are respectively fixedly arranged on the support B and are horizontally arranged in a row in a waterproof way, and the pneumatic scissors and the bag holders at the second position form a one-to-one corresponding relation; the corresponding relation means that each pneumatic scissors extends into a gap between two clamping openings of the corresponding bag clamping device; the bag scratching device is arranged on the bracket B, is matched with the position of the group of plasma bags at the third position, and is used for scratching the bag bodies in the group of plasma bags at the third position to form a scratching opening on each plasma bag; the bag cutting device comprises a bag cutting mechanism and a bag blocking mechanism; the bag scratching mechanism and the bag blocking mechanism are distributed on two sides of a group of plasma bags at the third position, the bag scratching mechanism is used for scratching the front surface of the plasma bags, and the bag blocking mechanism is used for propping against the rear surface of the plasma bags; the bag cutting mechanism comprises a synchronous belt guide rail and a cutter; the synchronous belt guide rail is fixedly arranged on the bracket B, a sliding block which performs horizontal reciprocating linear movement is arranged on the synchronous belt guide rail, and the moving direction of the sliding block is parallel to the arrangement direction of a group of bag holders; the utility model is characterized in that the utility model is fixedly arranged on the slide block of the synchronous belt guide rail, and the moving path of the utility model is positioned below a group of bag holders at the third position; the bag blocking mechanism comprises a motor, a rotating shaft and a baffle plate; the motor is fixedly arranged on the bracket B, and the crankshaft of the motor horizontally extends out; one end of the rotating shaft is movably arranged at the lower end of the bracket B, and the other end of the rotating shaft is connected with a crankshaft of the motor; the baffle is fixedly arranged on the rotating shaft, is driven by the rotating shaft to rotate and is switched between a vertical state and a falling state, when the baffle is in the vertical state, the baffle is used for abutting against the rear surfaces of the group of plasma bags in the third position, and when the baffle is in the falling state, the baffle avoids the moving path of the group of plasma bags; the blowing device is arranged on the bracket B and is adapted to the position of a group of plasma bags at the fourth position; for blowing into a break in a set of plasma bags at a fourth location, to cause a plasma cake in each plasma bag to be expelled from the cut in that plasma bag; the blowing device comprises a lifting driving cylinder and a blowing pipe; a group of lifting driving cylinders are respectively fixedly arranged on the bracket B and are horizontally arranged in a row in a water-proof way, and piston rods of all the lifting driving cylinders vertically extend downwards; the air blowing pipes are respectively and fixedly connected to piston rods of the lifting driving cylinders and are horizontally arranged in a row in a waterproof manner, and each air blowing pipe corresponds to one lifting driving cylinder; the lower end of the air blowing pipe is in an outward-expanding horn mouth shape, and the upper end of the air blowing pipe is communicated with a compressed air source; the piston rod of the air cylinder is driven to stretch up and down, so that the air blowing device is switched between a butt joint state and an avoiding state, when the air blowing device is in the butt joint state, the group of air blowing pipes contain fractures in a group of plasma bags in a fourth position through the lower ports of the air blowing pipes, and each air blowing pipe corresponds to one plasma bag; when the air blowing device is in an avoiding state, the group of air blowing pipes are positioned right above the group of plasma bags at the fourth position;

the empty bag recovery assembly comprises a bracket C, a chain conveyor and an empty bag push-out device; the bracket C is fixedly arranged on the ground; the chain type conveyor is directly or indirectly fixedly arranged on the bracket C, a rotary transmission path in a horizontal plane is arranged on the chain type conveyor, a receiving section, a draining section and a pushing-out section are sequentially arranged on the rotary transmission path, a horizontally arranged barbed nail row is arranged on the rotary transmission path, the barbed nail row surrounds the rotary transmission path for one circle and extends out of the rotary transmission path, and the barbed nail row comprises a plurality of barbed nails arranged at intervals; the chain type conveyor drives the barbed nails to move along the rotary conveying path and sequentially pass through the receiving section, the draining section and the pushing section; the puncture nails at the receiving section are closely arranged and correspond to the group of plasma bags at the fifth position one by one; the piercing pins at the pushing-out section are opposite to the empty bag pushing-out device; the empty bag pushing device comprises a hydraulic cylinder and a push plate; the hydraulic cylinder is directly or indirectly fixedly arranged on the bracket C, and a piston rod of the hydraulic cylinder horizontally extends out and is fixedly connected with the push plate; when the piston rod of the hydraulic cylinder retracts, the push plate avoids the moving path of the spike row, and when the piston rod of the hydraulic cylinder extends out, the push plate is used for pushing out all the plasma bags collected on the spike at the push-out section at one time;

the falling object collecting kit comprises a plasma collecting pool, a hose collecting box, a residual liquid collecting tank and an empty bag collecting box; the plasma collecting pool is fixedly arranged on the ground and is positioned right below the tube shearing device, the bag cutting device and the air blowing device, and a plasma outlet is formed in one side of the plasma collecting pool; the hose collecting box is movably arranged on the bracket B, is positioned right below the tube shearing device and above the plasma collecting tank, and is provided with a draining hole at the bottom; the residual liquid collecting tank is fixedly arranged on the ground and is positioned right below the receiving section and the draining section of the rotary transmission path; the empty bag collecting box is movably arranged on the bracket C and is positioned right below the push-out section of the rotary transmission path;

before executing the operation of breaking the plasma bag, the parallel air-blowing type plasma bag breaking system is in an initial state, and in the initial state:

a. the lifting platform is positioned at the upper end of the moving stroke of the lifting platform;

b. the supporting and lifting device is positioned at the bag taking position;

c. the opening degrees of all the supporting openings in the supporting device are opened to the maximum;

d. all the clamping openings in the group of bag holders in the first position are opened;

e. all the shearing openings in the pipe shearing device are opened;

f. a cutting knife of the bag cutting mechanism moves to one end of the synchronous belt guide rail;

g. the baffle plate in the bag blocking mechanism is in a laid-down state;

h. the blowing device is in an avoiding state;

i. the piston rod of the hydraulic cylinder retracts to enable the push plate to avoid the moving path of the barbed nail;

the plasma bag breaking method comprises the following steps:

s01, the lifting device lifts the blood plasma bag from the tray:

a. placing at least one set of plasma bags on a plurality of successive trays and ensuring that only one set of plasma bags is placed on each tray;

b. the lifting driving device drives the lifting platform and the lifting device to descend, so that all lifting stations in the lifting device contain a group of plasma bags on a plurality of continuous trays;

c. the finger cylinders in the supporting and lifting devices act to drive the two power rods on each finger cylinder to synchronously move in opposite directions, and the four half-side claw bodies contained in each pair of supporting and lifting units respectively extend into the four gaps of the corresponding tray, so that the pair of supporting and lifting units hook a bag of plasma bags from four places;

d. the lifting driving device drives the lifting platform and the supporting and lifting device to rise, so that a group of plasma bags supported and taken by the supporting and lifting device are flush with and correspond to a group of bag holders at a first position one by one;

before the step a, the plasma bag is a cleaned frozen plasma bag;

when the step c is finished, the lifting device lifts a group of plasma bags from a plurality of continuous trays;

when the step d is finished, the one-to-one correspondence means that the edges of the plasma bags positioned at the two sides of the hose respectively face the two clamping ports of the bag holder;

s02, the bag clamping device clamps the plasma bag from the lifting device:

a. the translation conveying device drives the lifting device to move from the bag taking position to the bag sending position; when the lifting device moves to the bag feeding position, a group of plasma bags lifted by the lifting device are flush with a group of bag holders at the first position and are in one-to-one correspondence;

b. the pneumatic water gap clamps in the group of bag clamps at the first position clamp the group of plasma bags on the supporting and lifting device;

c. a finger cylinder in the supporting and lifting device acts to release a group of supported plasma bags; then, the translation conveying device drives the supporting and lifting device to move from the bag sending position to the bag taking position, so that the supporting and lifting device is ready for supporting and taking off a group of plasma bags;

in the step a, the one-to-one correspondence refers to that the edges of the plasma bags positioned at the two sides of the hose respectively extend into the two clamping openings of the corresponding bag clamping device;

when the step b is finished, the positions of the bag clamping devices for clamping the plasma bag are positioned on the edges of the two sides of the hose of the plasma bag;

s03, cutting the flexible tube of the plasma bag by the tube cutting device:

a. the chain conveyor is started to move the group of bag holders at the first position and the group of plasma bags held by the bag holders to the second position;

b. a group of pneumatic scissors contained in the tube shearing device act synchronously to completely shear the hoses of a group of plasma bags at the second position; the hose immediately falls into the hose collecting box, and after the ice-shaped plasma in the hose melts and flows out of the hose, the ice-shaped plasma drops into the plasma collecting pool through a draining hole at the bottom of the hose collecting box;

when the step a is finished, a group of pneumatic scissors contained in the tube shearing device and a group of bag holders located at the second position form a one-to-one correspondence relationship, wherein the correspondence relationship means that each pneumatic scissors extends into a space between two clamping openings of the corresponding bag holders;

s04, the bag cutting device cuts the outer wall of the plasma bag:

a. the chain conveyor is started to move the group of bag holders at the second position and the group of plasma bags held by the bag holders to a third position;

b. a motor of the bag blocking mechanism is started to drive the baffle plate to rotate from the falling state to the vertical state so as to abut against the rear surfaces of the group of plasma bags at the third position;

c. a synchronous belt guide rail of the bag cutting mechanism is started, a cutter is driven to move from one end of the synchronous belt guide rail to the other end, and the front surfaces of a group of plasma bags at the third position are cut;

d. a motor of the bag blocking mechanism is started to drive the baffle plate to rotate from the vertical state to the falling state, so that the path of subsequent movement of the plasma bag is avoided;

when the step a is finished, a group of plasma bags at the third position are matched with the bag dividing device, namely, the plasma bags are positioned between the bag dividing mechanism and the bag blocking mechanism;

in the step c, when the cutting knife cuts through the plasma bag, the rear surface of the plasma bag is pressed on the baffle, so that the penetration force of the cutting knife is enough to break the outer wall of the plasma bag;

s05, blowing the ice-shaped plasma block out of the plasma bag by a blowing device:

a. the chain conveyor is started, so that the group of bag holders at the third position and the group of plasma bags held by the bag holders move from the third position to the fourth position;

b. a group of lifting driving cylinders in the blowing device extend out of piston rods, so that the blowing device is switched from an avoiding state to a butt joint state; when the air blowing device is in a butt joint state, the lower ports of the air blowing pipes contain the fracture in the group of plasma bags at the fourth position;

c. starting a compressed air source, blowing compressed air with certain pressure out of the lower end of the air blowing pipe, entering the plasma bag through the fracture at the upper end of the plasma bag, and finally discharging the compressed air from the cut at the lower end of the plasma bag; in the process, when the compressed air enters the plasma bag, the inner wall of the plasma bag is separated from the ice-block-shaped plasma, and when the compressed air is discharged from the plasma bag, the cut opening at the lower end of the plasma bag is opened, so that the ice-block-shaped plasma in the plasma bag is discharged from the cut opening of the plasma bag and falls into the plasma collecting pool;

when the sub-step a of the step is finished, a group of plasma bags positioned at the fourth position are positioned right below the blowing device;

s06, the bag gripper transfers the plasma bag onto a chain conveyor:

a. the chain conveyor is started, so that the group of bag holders at the fourth position and the group of plasma bags held by the bag holders move from the fourth position to the fifth position; because the group of plasma bags at the fifth position are arranged next to the piercing pins at the receiving section and correspond to the piercing pins one by one, the plasma bags can pierce the corresponding piercing pins when reaching the fifth position;

b. the pneumatic water gap clamp in the group of bag clamping devices at the fifth position acts to separate the two clamping plates connected to the two rotating handles of the pneumatic water gap clamp, so that the bag clamping devices loosen the corresponding blood plasma bags, and then a group of empty blood plasma bags are transferred to the puncture nails at the receiving section;

s07, the empty bag pushing device unloads the empty plasma bag on the chain conveyor:

a. when the puncture nails on the receiving section collect a preset group number of empty plasma bags, the chain conveyor drives the rotary transmission path to move forward for one section, so that the puncture nails on the receiving section move to the draining section, and the puncture nails on the pushing section move to the receiving section;

b. when the rotary transmission path moves forwards for a section, a hydraulic cylinder piston rod of the empty bag pushing-out device performs one-time telescopic action, when the hydraulic cylinder piston rod extends out, the empty plasma bag moved to the pushing-out section is pushed out completely at one time through a push plate, the pushed-out empty plasma bag falls into an empty bag collecting box to wait for centralized dumping treatment, and when the hydraulic cylinder piston rod retracts, the moving path of the piercing spike is avoided;

in this step, when the empty plasma bag is in the receiving section or the draining section, residual plasma in the plasma bag drops downward and is collected by the residual liquid collecting tank, and when the spike in the pushing-out section returns to the receiving section, the spike is used for receiving a group of empty plasma bags.

2. The parallel air-blowing type plasma bag breaking method according to claim 1, characterized in that: the chain type conveyor is provided with n chain wheels which are uniformly distributed in an annular shape and a chain wound among the n chain wheels, the chain is positioned on a horizontal plane and forms a rotary transmission path through rotation, the n chain wheels divide the rotary transmission path into n sections which are equal in length and enclose a circle, the receiving section and the pushing section are respectively two connected sections in the n sections, and the draining section is the other sections except the receiving section and the pushing section in the n sections; n is more than or equal to 3.

3. The parallel air-blowing type plasma bag breaking method according to claim 2, characterized in that: when the step b of the step S03 is completed, the length of the hose remained on the plasma bag is 8-12 mm.

4. The parallel air-blowing type plasma bag breaking method as claimed in claim 3, characterized in that: when the step c of the step S04 is completed, the cut on the plasma bag is a horizontal line, extends from one side of the plasma bag to the other side, and is positioned in a section 1-2cm above the lower edge of the plasma bag.

5. The parallel air-blowing plasma bag breaking method of claim 4, characterized in that: in the step c of the step S05, when the volume of the plasma bag is 550-650ml, the corresponding air blowing time is 5-8S, and the corresponding air pressure is not less than 1.05 MPa.

6. The parallel air-blowing type plasma bag breaking method of claim 5, characterized in that: in the step a of the step S06, the position of the puncture needle for puncturing the plasma bag is positioned on the central line of the vertical direction of the plasma bag and is 0.45-0.55h away from the lower edge of the plasma bag, and h is the distance from the upper edge to the lower edge of the plasma bag.

7. The parallel air-blowing plasma bag breaking method of claim 6, characterized in that: the utility model comprises a knife seat, a knife body and a spring; a slideway and an installation cavity are arranged in the tool apron, one end of the slideway is communicated with the installation cavity, and the other end of the slideway is communicated with the outer wall surface of the tool apron; one end of the cutter body is slidably arranged in the slide way of the cutter holder, and the other end of the cutter body extends out of the cutter holder; the spring is compressed and arranged in the mounting cavity of the tool apron, two ends of the spring respectively abut against the wall surface of the mounting cavity of the tool apron and the end part of the tool body, and the tool body is forced to abut against the wall surface of the mounting cavity of the tool apron through elasticity; the utility model is characterized in that the utility model is fixedly arranged on the slide block of the synchronous belt guide rail in an inclined way, so that the knife body and the horizontal plane form an included angle of 45 degrees.

8. The parallel air-blowing plasma bag breaking method of claim 7, characterized in that: the plasma bag breaking assembly also comprises a pneumatic rotary joint; the pneumatic rotary joints are fixedly mounted on the support B respectively and are arranged in a row horizontally in a water-proof mode, and each pneumatic rotary joint supplies air to all bag holders arranged on one rotary moving path respectively, so that the air supply pipeline of each bag holder is prevented from being wound in the rotary moving process.

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