CN107137158B - A kind of electronic detachable apparatus for having needle injection - Google Patents

Abstract

The invention discloses a detachable device for an electric syringe with a needle, which comprises a hexagonal fixing sleeve, a syringe cylinder, a syringe housing, a piston, a piston rod, a wedge ring and a locking nut; the hexagonal fixing sleeve is positioned by a positioning surface in the housing , the syringe cylinder is connected with the hexagonal fixing sleeve through threads; there is a gap between the syringe cylinder and the housing, when installing the syringe cylinder part, the wedge ring is squeezed by the rotation of the lock nut, and the squeezed wedge ring enters the housing The gap between the cylinder and the cylinder block generates friction through the interference connection to prevent the relative rotation between the cylinder block and the housing. In the present invention, the positioning of the hexagonal fixing sleeve is accurate during installation, and the rotation and stop of the cylinder body are realized through the disassembly and assembly of the lock nut and the wedge ring. Realize the cleaning and disinfection of the syringe cylinder, internal piston and glass tube.

Description

A detachable device for electric syringe with needle

technical field

The invention belongs to the field of hand-held electric injectors, in particular to a detachable device for a needle and a cylinder of a hand-held electric injector.

Background technique

A hand-held electric injector is an electric tool that uses a motor to push the piston rod to move in the cylinder to achieve the purpose of drug injection. This syringe is adapted to the needs of large livestock farms. However, due to the tightness and sealing requirements during installation of the electric injector, usually the cylinder body and the piston rod are not easy to assemble and disassemble, which leads to the inconvenience of cleaning and disinfection.

At present, most electric injectors can only be disassembled as a whole, which brings great inconvenience to large-scale livestock farms that require frequent disinfection and cleaning.

Contents of the invention

In order to realize the simple and convenient disinfection and cleaning of electric injectors, the present invention provides a detachable device for electric syringes with needles, which can realize the disassembly of the syringe cylinder and piston without disassembling the whole electric injector. It brings great convenience to the cleaning and disinfection of electric injectors.

The technical scheme adopted in the present invention is:

A detachable device for an electric syringe with a needle, comprising a syringe housing, a hexagonal fixing sleeve, a syringe cylinder, a piston, a piston rod, a wedge ring and a locking nut; A positioning surface, the hexagonal fixing sleeve has internal threads, and the syringe cylinder has external threads for connecting with the hexagonal fixing sleeve; the piston rod is connected with the connecting plate through a hexagonal nut; the front end of the piston rod has a ball head structure for connecting with the rear end of the piston. The groove fits, and the ball head slides in the groove when the piston rod is pushed forward to ensure that the piston rod and the piston will not be stuck. When disassembling, the piston is taken out without disassembling the piston rod. After the hose and the hose connector are connected, the hose connector and the syringe cylinder pass through There is a gap between the syringe cylinder and the syringe housing, and the size of the gap is equal to the front end of the wedge ring. The wedge ring prevents the relative rotation between the syringe cylinder and the syringe housing through the interference connection. There is a wedge on the wedge ring for disassembly. Hook head of the ring.

When installing, first connect the piston to the piston rod, and then connect the syringe cylinder and the hexagonal fixing sleeve tightly through threaded connection. At this time, there is a gap between the syringe housing and the cylinder, and then put the wedge ring into the gap. , and the wedge ring is fully pushed into the gap by the lateral force generated when the lock nut rotates, forming an interference fit.

The beneficial effect of the present invention is that: in the present invention, the cylinder body, glass tube and piston of the electric injector can be disassembled only by rotating the lock nut without disassembling the body of the electric injector, so that the piston and the glass tube can be easily disassembled. Cleaning and disinfection, installation is also very convenient.

Description of drawings:

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

Fig. 2 is the dismantled schematic diagram of the completed structure of the example of the present invention;

Fig. 3 is a partial schematic diagram of a detachable device of an example of the present invention;

Fig. 4 is the structural representation of the wedge-shaped ring of the example of the present invention;

Fig. 5 is the structural representation of the locking nut of the example of the present invention;

In the figure, 1. Hexagonal nut; 2. Hexagonal fixing sleeve; 3. Syringe cylinder; 4. Syringe housing; 5. Wedge ring; 6. Locking nut; 7. Piston rod; 8. Piston; 9. Hose ; 10, hose connector; 11, connecting plate.

Detailed ways

The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings and examples, so as to better understand the present invention.

The realization of the present invention adopts the following idea: after the overall installation of the syringe, the syringe cylinder needs to be unable to rotate, but the syringe cylinder needs to be rotated to separate the syringe cylinder from the hexagonal fixing sleeve. Therefore, in the present invention, the method of interference connection is adopted. Through the assembly and disassembly of the wedge-shaped ring, the syringe cylinder cannot be rotated after installation, but can be rotated when it is disassembled. In addition, for the installation of the wedge-shaped ring, a locking The way the nut transmits the lateral force is simple and effective.

Referring to Figures 1-5, the present invention shows a detachable device for an electric syringe with a needle, including a syringe housing 4, a hexagonal fixing sleeve 2, a syringe cylinder 3, a piston 8, a piston rod 7, a wedge ring 5 and a lock nut 6 . The syringe housing 4 has three positioning surfaces for positioning the hexagonal fixing sleeve 2. The hexagonal fixing sleeve 2 has internal threads, and the syringe cylinder 3 has external threads for connecting with the hexagonal fixing sleeve 2; the piston rod 7 passes through the hexagonal fixing sleeve 2. The nut 1 is connected with the connecting plate 11; the front end of the piston rod 7 has a ball head structure, which is used to cooperate with the groove at the rear end of the piston 8. When the piston rod 7 is pushed forward, the ball head can slide in the groove to ensure that the piston rod 7 and the piston 8 will not be stuck , the piston 8 can be directly taken out during disassembly, the hose 9 is connected to the hose connector 10 and then connected to the syringe cylinder 3 through the hose connector 9, and the hose connector 10 needs to be removed first during disassembly; the syringe There is a gap of 2 mm between the cylinder body 3 and the housing 4, which is equal to the front end of the wedge ring 6. The wedge ring 6 prevents the relative rotation between the cylinder body 3 and the housing 4 of the syringe through an interference connection. The hook head of the ring 5; the lock nut 6 pushes the wedge-shaped ring 5 between the casing 4 and the syringe cylinder 3 through the lateral force generated by the screw transmission during installation, and the locking is ensured by the self-locking of the thread.

When installing, first connect the cleaned and sterilized piston 8 with the piston rod 7, and then make the syringe cylinder 3 closely connected with the hexagonal fixing sleeve 2 through threaded connection. At this time, there is a gap between the syringe housing 4 and the cylinder 3 If there is a small gap, the wedge ring 5 is put into the gap, and the wedge ring 5 is completely pushed into the gap by the lateral force generated when the lock nut 6 rotates, forming an interference fit.

When disassembling, first remove the hose 9 and hose 10 joints, then unscrew the lock nut 6, and then pull out the wedge ring 5 through the hook head on the wedge ring 5. At this time, the syringe housing 4 and the cylinder body There is a small gap between 3, and then the syringe cylinder 3 is turned to separate the syringe cylinder 3 from the hexagonal fixing sleeve 2, and finally the piston 8 is taken out to complete the disassembly.

The whole assembly and disassembly process is convenient, effective, safe and reliable. After the installation is completed, the function of the syringe is well realized, and the overall function is well realized.

Claims (2)

1. a kind of electronic detachable apparatus for having needle injection, it is characterised in that：Including injector housing（4）, hexagonal fixing sleeve （2）, syringe cylinder body（3）, piston（8）, piston rod（7）, cambridge ring（5）And locking nut（6）；The injector housing（4） On be useful for positioning hexagonal fixing sleeve（2）Three positioning surfaces, hexagonal fixing sleeve（2）There are internal thread, syringe cylinder body（3）On have For with hexagonal fixing sleeve（2）The external screw thread of connection；Piston rod（7）Pass through hex nut（1）With connecting plate（11）Connection；Piston Bar（7）There is ball head structure in front end, is used for and piston（8）The slot of rear end coordinates, piston rod（7）Bulb slides guarantor in slot when propulsion Demonstrate,prove piston rod（7）With piston（8）It will not block, piston is taken out in dismounting（8）, without dismantling piston rod（7）, hose（9）With Hose coupling（10）Pass through hose coupling after being connected（10）With syringe cylinder body（3）It is connected；The syringe cylinder body（3）With Injector housing（4）Between have gap, gap size and cambridge ring（5）Front end is equal, cambridge ring（5）It prevents from noting by interference connection Emitter cylinder body（3）With injector housing（4）It relatively rotates, cambridge ring（5）On be useful for dismounting cambridge ring（5）Gib head.

2. a kind of electronic detachable apparatus for having needle injection according to claim 1, it is characterised in that：When mounted, First piston（8）With piston rod（7）It is connected, then is connected through a screw thread and allows syringe cylinder body（3）With hexagonal fixing sleeve（2）Closely It is connected, at this time injector housing（4）With cylinder body（3）Between there are gaps, then by cambridge ring（5）It is fitted into gap, and passes through lock Tight nut（6）The cross force generated when rotation is by cambridge ring（5）It is pushed completely into gap, forms interference fit.