Medical volume-adjustable liquid separating device
Technical Field
The invention belongs to the technical field of medical equipment and equipment, and particularly relates to a medical volume-adjustable liquid separating device.
Background
The liquid separator is a device which is suitable for laboratories of hospitals, universities and colleges, scientific research and other units and is used for continuously and quantitatively adding liquid to various test liquids, radioactive isotopes, biological agents and the like during chemical analysis tests. The dispenser is fixed in the reagent bottle through the screw valve, and is closed closely and firmly, makes the process of getting of moving of solution be in a closed system, has avoided volatilizing, splashing, the turnover etc. of solution, has reduced the harm to environment and people, compares the totally open liquid process of moving of graduated flask formula and moves much safely. In medical, organic synthesis or petrochemical laboratories, high viscosity, high density, high volatility solvents are not uncommon, especially in the petrochemical industry. Such solutions are difficult to remove quickly due to their special properties and are difficult to accurately quantify using conventional measuring cylinders. In clinical practice, it is necessary to pour liquid into different containers or sterilize the containers or separate liquid medicines according to required dosage, so that the split charging of one or two patients or more than ten containers is relatively easy, and the liquid is sucked by a dispenser with fixed volume. In actual use, the liquid taking amount is not easy to control, professional personnel are required to operate, and a large amount of manpower is wasted. In addition, the liquid taking efficiency of the numerical control type liquid separator is low, and the numerical control type liquid separator is not suitable for large-batch liquid transferring operation.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a finish dispenser [201811119791.4] comprising a base, a piston pump body, and a piston rod; the base is provided with a first liquid suction hole and a first liquid outlet hole, and the bottom of the piston pump body is provided with a second liquid suction hole and a second liquid outlet hole; a rotating motor stator is embedded on the periphery of the base, and a rotating motor rotor is arranged on the periphery of the bottom of the piston pump body; the periphery of the upper part of the piston pump body is provided with a lifting motor stator, and the high direction of the piston rod is provided with a linear magnetic pole array formed by sequentially overlapping an N pole, an S pole, an N pole and an S pole.
The scheme solves the problem that the liquid taking amount of the liquid separator is not easy to control to a certain extent, but the scheme still has a plurality of defects, such as low liquid taking efficiency, inapplicability to mass operation and the like.
Disclosure of Invention
The invention aims to solve the problems and provides a medical volume-adjustable liquid separating device which is reasonable in design and high in liquid taking efficiency.
In order to achieve the purpose, the medical volume-adjustable liquid distribution device comprises a liquid distributor main body connected with a container in a sealing mode, a liquid storage mechanism is communicated with the liquid distributor main body, a liquid suction mechanism and a liquid discharge mechanism are installed in the liquid distributor main body, an air ventilation mechanism for balancing air pressure inside the container is arranged on the liquid distributor main body, a liquid suction mechanism for sucking liquid into the liquid storage mechanism from the liquid suction mechanism is arranged in the liquid storage mechanism, a volume control mechanism for controlling liquid suction amount or liquid discharge amount is arranged between the liquid storage mechanism and the liquid suction mechanism, the liquid suction mechanism comprises a liquid suction pipe connected to the lower portion of the liquid distributor main body, a liquid suction check valve for preventing liquid from flowing back into the container from the liquid storage mechanism is arranged between the liquid suction pipe and the liquid storage mechanism, the liquid discharge mechanism comprises a liquid discharge pipe connected to one side of the liquid distributor main body, and a liquid discharge check valve for preventing air from being sucked into the liquid storage mechanism from the outside is arranged between the liquid discharge pipe and the liquid storage mechanism. The piston type liquid pumping mechanism is matched with the capacity control mechanism, so that the liquid taking efficiency is high under the condition that the liquid taking amount is accurate, and the liquid taking mechanism is suitable for large-batch liquid transferring operation.
In the medical volume-adjustable liquid separating device, the liquid separator main body comprises a base, a liquid suction channel, a liquid discharge channel and a ventilation channel are formed in the base, the liquid suction tube is hermetically communicated with the liquid suction channel, and the liquid discharge tube is communicated with the liquid discharge channel. The base of the dispenser body has a plurality of channels built into it through which air or liquid can flow freely.
In the above-mentioned volume-adjustable medical liquid-separating device, the ventilation mechanism includes a ventilation tube disposed in the ventilation channel, one end of the ventilation tube disposed outside the liquid-separating device main body is provided with a filter tip, and the other end of the ventilation tube is provided with a ventilation check valve for preventing liquid from flowing into the ventilation tube from the container. The filter tip can filter dust and bacteria in the air, ensures the cleanness of the interior of the container and is convenient for aseptic operation.
In the above medical volume-adjustable liquid distribution device, the liquid storage mechanism comprises a liquid storage cover connected with the base, a liquid storage cylinder is hermetically connected to the other side of the liquid storage cover, and scale strips distributed along the axial direction are arranged on the side surface of the liquid storage cylinder. The liquid storage cylinder of the liquid storage mechanism is separable from the liquid storage cover, and the appropriate capacity specification is selected according to actual needs, so that the applicability of the liquid distribution device is improved.
In the medical volume-adjustable liquid separating device, the base, the liquid storage cover and the liquid storage cylinder are connected through the inserting mechanism. And the plugging mechanism is adopted to ensure the connection stability and the sealing property of each component.
In the medical volume-adjustable liquid separating device, the inserting mechanism comprises annular grooves formed in the upper end faces of the base and the liquid storage cover, a connecting cylinder inserted into the annular grooves is arranged at the lower end of the liquid storage cover, a positioning notch is formed in one side of the annular groove in the upper end of the base, and a positioning lug corresponding to the positioning notch is arranged on one side of the connecting cylinder. After the liquid storage cover and the base are relatively fixed, the positioning lug fixes the circumferential rotation positions of the liquid storage cover and the base.
In the medical volume-adjustable liquid separating device, the upper end surface of the liquid storage cover is provided with an installation groove for installing the liquid suction one-way valve, and the upper end surface of the liquid storage cover is provided with a flaring communicated with the liquid discharge pipe. In imbibition check valve embedding mounting groove, the cooperation flaring can be with the liquid exhaust in the stock solution mechanism, further improves the accuracy of getting liquid.
In the liquid distribution device with adjustable medical capacity, the liquid pumping mechanism comprises a piston head which is arranged in the liquid storage cylinder and slides relative to the liquid storage cylinder, the piston head is attached to the inner wall of the liquid storage cylinder and sealed, the upper end of the piston head is connected with a piston shaft, the piston shaft penetrates through a limiting cylinder at the upper end of the liquid storage cylinder, and the top end of the piston shaft is connected with a detachable piston handle. The piston handle is pushed and pulled to control the extraction and the discharge of liquid, and the detachable piston handle is convenient for adjusting the volume control mechanism.
In the above medical volume-adjustable liquid separating device, the volume control mechanism includes a plurality of pin holes disposed on the side surface of the piston shaft, the pin holes are distributed along the axial direction of the piston shaft, and fixing pins are inserted into the pin holes. The fixed pin is inserted into the opposite pin hole, so that the push-pull process of the piston head is limited, and the liquid extraction or discharge amount is accurately controlled.
In the medical volume-adjustable liquid separating device, the side surface of the piston head is circumferentially provided with the rubber ring, and the lower end surface of the piston head is provided with the rubber layer. Elastic rubber is distributed on the side face and the bottom of the piston head, so that the sealing performance of the piston head and the liquid storage mechanism is improved.
Compared with the prior art, the invention has the advantages that: the piston type extraction mode is matched with the capacity control mechanism, so that the working efficiency is higher, and the piston type liquid-removing device is suitable for large-batch liquid-removing operation; the ventilation mechanism is internally provided with a filter tip, so that bacteria in the air can be filtered, and the sterile operation is convenient; the liquid suction mechanism and the liquid discharge mechanism which are composed of the one-way valve ensure the one-way flow of the liquid and prevent the backflow; the liquid storage mechanism can adopt specifications with different capacities, and has better applicability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the front face of the present invention;
FIG. 3 is a schematic structural view from another perspective of the present invention;
FIG. 4 is a schematic cross-sectional view at A in FIG. 3;
FIG. 5 is a schematic structural view of the pumping mechanism of the present invention;
FIG. 6 is an expanded view of the construction of the reservoir cap and base of the present invention;
in the figure, a dispenser main body 1, a base 11, a liquid suction channel 12, a liquid discharge channel 13, a ventilation channel 14, a liquid storage mechanism 2, a liquid storage cover 21, a liquid storage cylinder 22, a scale bar 23, a mounting groove 24, a flaring 25, a limiting cylinder 26, a liquid suction mechanism 3, a liquid suction pipe 31, a liquid suction check valve 32, a liquid discharge mechanism 4, a liquid discharge pipe 41, a liquid discharge check valve 42, a ventilation mechanism 5, a ventilation pipe 51, a filter 52, a ventilation check valve 53, a liquid suction mechanism 6, a piston head 61, a piston shaft 62, a piston handle 63, a rubber ring 64, a rubber layer 65, a capacity control mechanism 7, a pin hole 71, a fixing pin 72, a plugging mechanism 8, an annular groove 81, a connecting cylinder 82, a positioning notch 83, a positioning bump 84 and a container 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-6, the medical volume-adjustable liquid separating device comprises a liquid separator main body 1 hermetically connected with a container 9, a liquid storage mechanism 2 is communicated with the liquid separator main body 1, a liquid suction mechanism 3 and a liquid discharge mechanism 4 are installed in the liquid separator main body 1, an air ventilation mechanism 5 for balancing the air pressure in the container 9 is arranged on the liquid separator main body 1, a liquid suction mechanism 6 for sucking liquid from the liquid suction mechanism 3 into the liquid storage mechanism 2 is arranged in the liquid storage mechanism 2, a volume control mechanism 7 for controlling the liquid suction volume or discharge volume is arranged between the liquid storage mechanism 2 and the liquid suction mechanism 6, the liquid suction mechanism 3 comprises a liquid suction pipe 31 connected below the liquid separator main body 1, a liquid suction check valve 32 for preventing the liquid from flowing back from the liquid storage mechanism 2 into the container 9 is arranged between the liquid suction pipe 31 and the liquid storage mechanism 2, the liquid discharge mechanism 4 comprises a liquid discharge pipe 41 connected to one side of the liquid separator main body 1, a liquid discharge check valve 42 for preventing air from being sucked into the liquid storage mechanism 2 from the outside is provided between the liquid discharge pipe 41 and the liquid storage mechanism 2. When the liquid pumping mechanism 6 and the liquid storage mechanism 2 work in a matching way, the liquid suction pipe 31 of the liquid suction mechanism 3 pumps liquid from the container 9, the liquid is stored in the liquid storage mechanism 2 through the liquid suction one-way valve 32, the liquid is discharged from the liquid discharge pipe 41 through the liquid discharge one-way valve 42, and the pumping amount and the discharging amount of the liquid are controlled by the capacity control mechanism 7.
Specifically, the dispenser body 1 includes a base 11, a liquid suction passage 12, a liquid discharge passage 13, and a vent passage 14 are formed in the base 11, the liquid suction pipe 31 is in sealed communication with the liquid suction passage 12, and the liquid discharge pipe 41 is in communication with the liquid discharge passage 13. A liquid suction channel 12, a liquid discharge channel 13 and a gas vent channel 14 in the base 11 are responsible for the transport of liquid or gas, and the lower end of the base 11 is in sealed communication with the opening at the upper end of the container 9 by means of a threaded port or other connection.
Further, the ventilation mechanism 5 includes a ventilation pipe 51 provided in the ventilation passage 14, a filter 52 is attached to one end of the ventilation pipe 51 provided outside the dispenser body 1, and a ventilation check valve 53 for preventing liquid from flowing into the ventilation pipe 51 from the container 9 is attached to the other end of the ventilation pipe 51. The air pipe 51 in the ventilation mechanism 5 balances the air pressure inside and outside the container 9, and air enters the ventilation pipe 51 from the filter 52, filters bacteria, and is input into the container 9 from the ventilation check valve 53.
Further, stock solution mechanism 2 includes stock solution lid 21 of being connected with base 11, and stock solution lid 21 opposite side sealing connection has a liquid storage cylinder 22, and liquid storage cylinder 22 side is provided with along the scale 23 of axial distribution. The liquid storage cylinder 22 of the liquid storage mechanism 2 is fixedly connected with the liquid storage cover 21 in an inserting mode, and the external scale bar 23 is convenient for observing the amount of the liquid in the liquid storage cylinder.
The base 11, reservoir cap 21 and reservoir 22 are visibly connected by a docking mechanism 8. The base 11, the liquid storage cover 21 and the liquid storage cylinder 22 can be detached and replaced, and the liquid storage cylinder 22 can be replaced by specifications with different capacities such as 5ml, 10ml, 50ml and the like, and is respectively suitable for extracting solvents with micro quantity, general quantity and large quantity.
Furthermore, the inserting mechanism 8 includes an annular groove 81 disposed on the upper end surfaces of the base 11 and the liquid storage cover 21, a connecting cylinder 82 inserted into the annular groove 81 of the base 11 is disposed on the lower end of the liquid storage cover 21, a positioning notch 83 is opened on one side of the annular groove 81 on the upper end of the base 11, and a positioning protrusion 84 opposite to the positioning notch 83 is disposed on one side of the connecting cylinder 82. The splicing mechanism 8 adopts the matching mode of the annular groove 81 and the connecting cylinder 82, the structural sealing performance is improved, and the splicing part can be filled with adhesive to enhance the connection tightness.
In addition, the upper end surface of the liquid storage cover 21 is provided with an installation groove 24 for installing the liquid suction check valve 32, and the upper end surface of the liquid storage cover 21 is provided with a flaring 25 communicated with the liquid discharge pipe 41. When the piston head 61 is pressed to the upper end of the liquid storage cover 21, the liquid in the liquid storage cylinder 22 can be completely discharged.
Meanwhile, the liquid pumping mechanism 6 comprises a piston head 61 which is arranged in the liquid storage cylinder 22 and slides relative to the liquid storage cylinder 22, the piston head 61 is attached and sealed with the inner wall of the liquid storage cylinder 22, the upper end of the piston head 61 is connected with a piston shaft 62, the piston shaft 62 penetrates through a limiting cylinder 26 at the upper end of the liquid storage cylinder 22, and the top end of the piston shaft 62 is connected with a detachable piston handle 63. The piston shaft 62 drives the piston head 61 to slide relative to the liquid storage cylinder 22 by pushing and pulling the piston handle 63, and the liquid is pumped and stored among the piston head 61, the liquid storage cover 21 and the liquid storage cylinder 22.
It is apparent that the capacity control mechanism 7 includes a plurality of pin holes 71 provided in the side surface of the piston shaft 62, the pin holes 71 being distributed in the axial direction of the piston shaft 62, and fixing pins 72 being inserted into the pin holes 71. When the fixing pin 72 is inserted into the pin hole 71 outside the liquid storage cylinder 22, the fixing pin 72 limits the propelling amount of the piston head 61, so that the quantitative discharge of the liquid is realized; when the fixing pin 72 is inserted into the pin hole 71 inside the liquid storage cylinder 22, the fixing pin 72 limits the pulling amount of the piston head 61, thereby realizing quantitative extraction of the liquid.
Preferably, the side surface of the piston head 61 is provided with a rubber ring 64 along the circumferential direction, and the lower end surface of the piston head 61 is provided with a rubber layer 65. The rubber ring 64 and the rubber layer 65 have certain elasticity, and the tightness of the piston head 61 with the inner side of the liquid storage cylinder 22 and the liquid storage cover 21 is guaranteed.
In summary, the principle of the present embodiment is: the liquid suction mechanism 3 and the liquid discharge mechanism 4 which are composed of the one-way valve and the tube body avoid liquid backflow, and the volume control mechanism 7 limits the liquid extraction or discharge amount of the liquid storage mechanism 2 and the liquid extraction mechanism 6, so that large-batch liquid removal operation is completed.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although terms such as the dispenser main body 1, the base 11, the liquid suction channel 12, the liquid discharge channel 13, the air vent channel 14, the liquid storage mechanism 2, the liquid storage cover 21, the liquid storage cylinder 22, the scale 23, the mounting groove 24, the flared opening 25, the limiting cylinder 26, the liquid suction mechanism 3, the liquid suction pipe 31, the liquid suction check valve 32, the liquid discharge mechanism 4, the liquid discharge pipe 41, the liquid discharge check valve 42, the air vent mechanism 5, the air vent pipe 51, the filter 52, the air vent check valve 53, the liquid suction mechanism 6, the piston head 61, the piston shaft 62, the piston handle 63, the rubber ring 64, the rubber layer 65, the volume control mechanism 7, the pin hole 71, the fixing pin 72, the inserting mechanism 8, the annular groove 81, the connecting cylinder 82, the positioning notch 83, the positioning bump 84, the container 9 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.