Injection system capable of continuously and stably outputting

Abstract

The utility model relates to an injection system capable of continuously and stably outputting. The injection system comprises an injection assembly, a medicine storage bin and a communication hose. The injection assembly comprises an injection cylinder, a piston component, a first one-way valve, a second one-way valve, a three-way connector, a through type lead screw motor and a guide pipe. The through type lead screw motor is connected with the rear end of the syringe; the piston component comprises a piston, a piston rod and a sliding shaft; the middle of the piston rod penetrates through the through type lead screw motor and is provided with threads matched with the through type lead screw motor. An axial sliding groove in sliding fit with the end of the sliding shaft is formed in the side wall of the guiding pipe. The piston rod and the piston are coaxially arranged, so that all parts of the piston synchronously and axially move; the axial chute is matched with the sliding shaft, so that the axial movement of the piston rod is guided, the rotation of the piston rod is blocked, the axial movement of the piston is accurately controlled, and the output quantity of the veterinary liquid medicine is accurately controlled; the medicine storage bin conveys veterinary liquid medicine to the syringe through the communicating hose.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous injection devices for veterinary use, and in particular to an injection system with continuous and stable output. Background Technology

[0002] In large-scale livestock farms, farmers need to regularly vaccinate or administer liquid medications to large livestock for disease prevention. Existing veterinary liquid medication injectors already achieve continuous injection of liquid medications. For example, the utility model patent for a multifunctional continuous veterinary injector with authorization announcement number CN2533877Y is an example of an injector capable of continuously injecting veterinary liquid medications. The working principle of this type of injector is to control the volume of veterinary liquid medication injected in a single injection by limiting the return limit position of the piston. Specifically, the return limit position of the piston is adjusted according to the volume of veterinary liquid medication injected in a single injection; when the piston is at the return limit position, the amount of veterinary liquid medication in front of the piston is the amount of liquid medication injected in a single injection. When the piston is pushed all the way forward, the veterinary liquid medication in front of the piston is completely expelled, and the injector injects the prescribed amount of medication. Once multiple injections of veterinary liquid medication are performed, it is difficult to guarantee that the piston is pushed all the way forward each time; therefore, this type of continuous veterinary injector cannot guarantee that the amount of veterinary liquid medication injected each time is equal, and cannot continuously and stably output veterinary liquid medication. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems and provide an injection system with continuous and stable output.

[0004] The technical solution of this utility model is as follows: A continuous and stable output injection system includes an injection assembly, a drug storage tank, and a connecting hose; the injection assembly includes an injection cylinder, a piston assembly, a one-way valve A, a one-way valve B, and a three-way connector; the piston assembly is inserted into the injection cylinder from back to front; the injection cylinder has a central hole at its front end; the piston assembly moves axially inside the injection cylinder, allowing veterinary liquid drugs to enter and exit the injection cylinder through the central hole; the central hole connects to one-way valve A and one-way valve B through the three-way connector; one-way valve A is installed in the forward direction on the three-way connector; the veterinary liquid drugs can enter the three-way connector through one-way valve A, but cannot enter one-way valve A through the three-way connector; one-way valve B is installed in the reverse direction on the three-way connector; the veterinary liquid drugs can enter one-way valve B through the three-way connector, but cannot enter the three-way connector through one-way valve B; one-way valve A is connected to the drug storage tank through the connecting hose; the drug storage tank is used to temporarily store veterinary liquid drugs; when the injection cylinder is under negative pressure, the veterinary liquid drugs in the drug storage tank can enter the injection cylinder through the hose, one-way valve A, and three-way connector. When the syringe is under positive pressure, the veterinary liquid medication inside can be injected through the three-way connector and one-way valve B. The injection assembly also includes a through-type screw motor and a guide tube connected front and rear. The through-type screw motor is connected to the rear end of the syringe, forming a single unit with a more compact structure. The piston assembly includes a piston that slides and seals against the inner wall of the syringe, a piston rod that is coaxially connected to the rear end of the piston, and a sliding shaft located at the rear end of the piston rod. The piston rod passes through the through-type screw motor in the middle and has threads that mate with the through-type screw motor. The side wall of the guide tube has an axial groove that slides and mates with the end of the sliding shaft. The output torque of the through-type screw motor acts on the piston rod, causing the piston to move axially. The sliding fit between the axial groove and the sliding shaft prevents the piston rod from rotating, ensuring that the speed of rotation output by the through-type screw motor to the piston rod multiplied by the piston rod lead equals the axial movement speed of the piston, thereby achieving precise drug dosing. The coaxial connection between the piston rod and the piston allows all parts of the upper end of the piston to move axially synchronously, thereby achieving precise control of the output volume of the veterinary liquid medication.

[0005] Preferably, the piston is fitted with several sealing rings in the middle to improve the sealing performance between the piston and the inner wall of the syringe, preventing veterinary liquid drugs from leaking to the rear end of the syringe and affecting the accurate and stable output of veterinary liquid drugs.

[0006] Preferably, the syringe has an injection chamber that slides with the piston; the front end of the injection chamber is a conical cavity; the front end of the piston has a truncated cone that matches the conical cavity; the truncated cone and the conical cavity work together to make full use of the veterinary liquid drug inside the syringe.

[0007] Preferably, a protruding ring extends from the outer wall of the rear end of the syringe; the front end of the through-type lead screw motor is provided with a motor connecting plate, a fastening ring, a bolt connection, and a mounting screw; the front end face of the motor connecting plate is provided with a concentric piston rod through hole and a fastening groove; the piston rod through hole is set in the fastening groove; the middle part of the piston rod passes through the piston rod through hole; the protruding ring is embedded in the fastening groove; the inner edge of the fastening ring fastens to the protruding ring; the through-type lead screw motor is connected to the motor connecting plate via the mounting screw; the fastening ring is connected to the motor connecting plate via the bolt connection; the syringe is detachably connected to the through-type lead screw motor via the fastening ring and the motor connecting plate.

[0008] Preferably, the front end of the guide tube is provided with a connecting ring aligned with the front end of the traction tube; the rear end of the through-type screw motor is provided with a motor connecting plate B, several countersunk screws, and several mounting screws B; the front end of the motor connecting plate B is provided with a piston rod through hole B and several countersunk holes; the piston rod through hole B is located at the center of the motor connecting plate B; the several countersunk holes are evenly distributed around the piston rod through hole B; the middle part of the piston rod passes through the piston rod through hole B; the countersunk screws pass through the countersunk holes and are threadedly connected to the connecting ring; the mounting screws B pass through the motor connecting plate B and are threadedly connected to the rear end of the through-type screw motor; the guide tube is detachably connected to the through-type screw motor through the connecting ring and the motor connecting plate B.

[0009] Furthermore, the connecting ring is provided with a radial through groove A that corresponds to and matches the sliding shaft; the piston rod through hole B is provided with a radial through groove B that corresponds to and matches the radial through groove A; the sliding shaft can enter the radial through groove B through the radial through groove A, making the entire injection assembly structure more compact.

[0010] Preferably, the piston rod has a radial hole at its rear end that matches the sliding shaft; the sliding shaft is inserted into the radial hole; the rear end face of the piston rod has a fixing screw hole; the fixing screw hole is threaded with a set screw; the end of the set screw abuts against the side of the sliding shaft; the set screw locks the sliding shaft to prevent the set screw from coming out of the radial hole.

[0011] Furthermore, the two ends of the sliding shaft extend symmetrically from both sides of the piston rod, so that both sides of the guide tube guide the piston rod, thus better preventing the piston rod from rotating on its own.

[0012] Furthermore, the slide shaft has a positioning blind hole on its side that matches the fixing screw hole; the end of the set screw abuts inside the positioning blind hole, improving the limiting effect of the set screw on the slide shaft.

[0013] Preferably, the drug storage compartment includes a compartment body and a cap; the top of the compartment body is provided with an inlet pipe for adding veterinary liquid drugs into the compartment; the bottom of the compartment body is provided with an outlet pipe; the outlet pipe is connected to a connecting hose for delivering veterinary liquid drugs to the injection assembly; the inlet pipe is threaded into the cap to seal the inlet pipe opening, preventing foreign objects from entering and contaminating the veterinary liquid drugs or causing the veterinary liquid drugs to splash out; the upper end of the cap is provided with an air hole; a duckbill valve is installed in the air hole; the duckbill valve is used to balance the air pressure inside and outside the drug storage compartment, which is conducive to the continuous and stable output of veterinary liquid drugs.

[0014] Furthermore, the medicine storage compartment also includes a quick-connect fitting for a double shut-off valve; the outlet pipe is connected to the connecting hose via the quick-connect fitting for the double shut-off valve; the quick-connect fitting for the double shut-off valve facilitates quick disassembly and assembly, and makes subsequent maintenance easier.

[0015] The beneficial effects of this invention are as follows: The continuous and stable output injection system of this invention has the following advantages:

[0016] (1) The piston rod of this utility model is coaxially arranged with the piston, so that the piston parts move axially synchronously; the axial groove cooperates with the sliding shaft, which not only provides guidance for the axial movement of the piston rod, but also blocks the rotation of the piston rod, thereby achieving precise control of the axial movement of the piston, and thus achieving precise control of the output of veterinary liquid drugs; the drug storage chamber delivers veterinary liquid drugs to the syringe through the connecting hose;

[0017] (2) The sliding shaft of this utility model can enter the radial through groove A into the radial through groove B, making the entire injection assembly structure more compact. Attached Figure Description

[0018] Figure 1 This utility model is a three-dimensional injection system with continuous and stable output. Figure 1 ;

[0019] Figure 2 This utility model is a three-dimensional injection system with continuous and stable output. Figure 2 ;

[0020] Figure 3 yes Figure 1 Top view;

[0021] Figure 4 yes Figure 3 AA section view;

[0022] Figure 5 yes Figure 4 A magnified view of the I-shaped image;

[0023] Figure 6 yes Figure 4 II magnified view;

[0024] Figure 7yes Figure 4 III magnified view;

[0025] Figure 8 yes Figure 4 IV magnified view;

[0026] Figure 9 It is a 3D view of the motor connection plate armor;

[0027] Figure 10 This is a 3D view of motor connection plate B;

[0028] In the diagram: 11. Injector barrel, 111. Center hole, 112. Convex ring, 113. Injection chamber, 1131. Conical cavity, 12. Through-type lead screw motor, 121. Motor connecting plate A, 1211. Piston rod through hole A, 1212. Snap-fit ​​groove, 122. Snap-fit ​​ring, 123. Bolt connector, 124. Countersunk screw, 125. Motor connecting plate B, 1251. Piston rod through hole B, 1252. Countersunk hole, 1253. Radial through groove B, 126. Mounting screw A, 127. Mounting screw B, 13. Guide tube, 131. Axial groove, 132. Connecting ring, 1321. Radial through groove A. Piston, 1411. Cone, 1412. Sealing ring, 142. Piston rod, 1421. Radial hole, 1422. Fixing screw hole, 1423. Set screw, 1424. Locking nut, 143. Sliding shaft, 1431. Positioning blind hole, 15. Mounting base plate, 151. Clearance hole, 152. Mounting elongated hole, 16. One-way valve A, 17. One-way valve B, 18. T-connector, 21. Chamber body, 211. Inlet pipe, 212. Outlet pipe, 213. Conical structure, 22. Cover, 221. Air hole, 222. Duckbill valve, 23. Quick connector for double shut-off valve, 3. Connecting hose. Detailed Implementation

[0029] Example 1: See Figure 1-10A continuous and stable injection system includes an injection assembly, a drug reservoir, and a connecting hose 3. The injection assembly includes a syringe 11, a piston 141, a one-way valve A 16, a one-way valve B 17, and a three-way connector 18. The piston 141 is inserted into the syringe 11 from back to front. The syringe 11 has a central hole 111 at its front end. The piston 141 moves axially within the syringe 11, allowing veterinary liquid medication to enter and exit the syringe 11 through the central hole 111. The central hole 111 connects to the one-way valve A 16 and the one-way valve B 17 via the three-way connector 18. The one-way valve A 16 is mounted on the three-way connector 18 in the forward direction. The veterinary liquid medication can be delivered via... One-way valve A 16 leads to three-way connector 18, but one-way valve B 17 cannot enter through three-way connector 18; one-way valve B 17 is installed in reverse on three-way connector 18; veterinary liquid drugs can enter one-way valve B 17 through three-way connector 18, but cannot enter three-way connector 18 through one-way valve B 17; one-way valve A 16 is connected to the drug storage chamber through connecting hose 3; the drug storage chamber is used to temporarily store veterinary liquid drugs; when the inside of syringe 11 is under negative pressure, the veterinary liquid drugs in the drug storage chamber can enter syringe 11 through the hose, one-way valve A 16, and three-way connector 18; when the inside of syringe 11 is under positive pressure, the veterinary liquid drugs in syringe 11... Liquid drugs can be injected through the three-way connector 18 and the one-way valve 17; the injection assembly also includes a through-type lead screw motor 12 and a guide tube 13 connected front and rear; the through-type lead screw motor 12 is connected to the rear end of the syringe 11, forming a single unit with a more compact structure; the piston 141 component includes a piston 141 that is sealed and slidably fitted with the inner wall of the syringe 11, a piston rod 142 coaxially connected to the rear end of the piston 141, and a sliding shaft 143 located at the rear end of the piston rod 142; the piston rod 142 passes through the through-type lead screw motor 12 in the middle and has threads that mate with the through-type lead screw motor 12; the side wall of the guide tube 13 has a shaft that slidably mates with the end of the sliding shaft 143. The through-type screw motor 12 outputs torque to the axial groove 131, which acts on the piston rod 142, causing the piston 141 to move axially. The sliding fit between the axial groove 131 and the sliding shaft 143 prevents the piston rod 142 from rotating, ensuring that the speed output by the through-type screw motor 12 to the piston rod 142 multiplied by the lead of the piston rod 142 equals the axial movement speed of the piston 141, thereby achieving the purpose of precise drug dosing. The coaxial connection between the piston rod 142 and the piston 141 enables the upper part of the piston 141 to move axially synchronously, thereby achieving precise control of the output of veterinary liquid drugs. The axial movement of the piston 141 can change the pressure state inside the syringe 11.

[0030] Compared with the prior art, the piston rod 142 of this utility model is coaxially arranged with the piston 141, so that all parts of the piston 141 move axially synchronously; the axial groove 131 cooperates with the sliding shaft 143, which not only provides guidance for the axial movement of the piston rod 142, but also prevents the piston rod 142 from rotating, thereby achieving precise control of the axial movement of the piston 141, and thus achieving precise control of the output of veterinary liquid drugs; the drug storage chamber delivers veterinary liquid drugs to the syringe 11 through the connecting hose 3.

[0031] A number of sealing rings 1412 are fitted in the middle of the piston 141 to improve the sealing performance between the piston 141 and the inner wall of the syringe 11, preventing veterinary liquid drugs from leaking to the rear end of the syringe 11 and affecting the accurate and stable output of the veterinary liquid drugs. In this embodiment, there are two sealing rings 1412.

[0032] The syringe 11 has an injection chamber 113 that slides with the piston 141; the front end of the injection chamber 113 is a conical cavity 1131; the front end of the piston 141 has a truncated cone 1411 that matches the conical cavity 1131; the truncated cone 1411 and the conical cavity 1131 cooperate to make full use of the veterinary liquid drug inside the syringe 11.

[0033] A protruding ring 112 extends outward from the outer wall of the rear end of the syringe 11; the front end of the through-type lead screw motor 12 is provided with a motor connecting plate 121, a fastening ring 122, a bolt connection 123, and a mounting screw 126; the front end face of the motor connecting plate 121 is provided with a concentric piston rod through hole 1211 and a fastening groove 1212; the piston rod through hole 1211 is set in the fastening groove 1212; the middle part of the piston rod 142 passes through the piston rod through hole 1211; the protruding ring 112 is embedded in the fastening groove 1212; the inner edge of the fastening ring 122 is fastened to the protruding ring 112; the through-type lead screw motor 12 is connected to the motor connecting plate 121 through the mounting screw 126; the fastening ring 122 is connected to the motor connecting plate 121 through the bolt connection 123; the syringe 11 is detachably connected to the through-type lead screw motor 12 through the fastening ring 122 and the motor connecting plate 121.

[0034] The front end of the guide tube 13 is provided with a connecting ring 132 aligned with the front end face of the traction tube; the rear end of the through-type screw motor 12 is provided with a motor connecting plate B 125, a number of countersunk screws 124, and a number of mounting screws B 127; the front end face of the motor connecting plate B 125 is provided with a piston rod through hole B 1251 and a number of countersunk holes 1252; the piston rod through hole B 1251 is located at the center of the motor connecting plate B 125; the number of countersunk holes 1252 are evenly distributed around the piston rod through hole B 1251. The piston rod 142 passes through the piston rod through hole 1251 in the middle; the countersunk screw 124 passes through the countersunk hole 1252 and is threadedly connected to the connecting ring 132; the mounting screw 127 passes through the motor connecting plate 125 and is threadedly connected to the rear end of the through-type lead screw motor 12; the guide tube 13 is detachably connected to the through-type lead screw motor 12 through the connecting ring 132 and the motor connecting plate 125; in this embodiment, there are four countersunk screws 124, four countersunk holes 1252, and four mounting screws 125.

[0035] The connecting ring 132 is provided with a radial through groove A 1321 that matches the sliding shaft 143; the piston rod through hole B 1251 is provided with a radial through groove B 1253 that matches the radial through groove A 1321; the sliding shaft 143 can enter the radial through groove B 1253 through the radial through groove A 1321, making the entire injection assembly structure more compact.

[0036] The piston rod 142 has a radial hole 1421 at its rear end that matches the sliding shaft 143; the sliding shaft 143 is inserted into the radial hole 1421; the rear end face of the piston rod 142 has a fixing screw hole 1422; the fixing screw hole 1422 is threaded with a set screw 1423; the end of the set screw 1423 abuts against the side of the sliding shaft 143; the set screw 1423 locks the sliding shaft 143 to prevent the set screw 1423 from coming out of the radial hole 1421.

[0037] The sliding shaft 143 extends symmetrically from both sides of the piston rod 142, so that both sides of the guide tube guide the piston rod 142, thus better preventing the piston rod 142 from rotating on its own.

[0038] The slide shaft 143 has a positioning blind hole 1431 on its side that matches the fixing screw hole 1422; the end of the set screw 1423 abuts against the positioning blind hole 1431 to improve the limiting effect of the set screw 1423 on the slide shaft 143.

[0039] The front end of the piston rod 142 is threadedly connected to the piston 141, realizing a detachable connection between the piston rod 142 and the piston 141; the front end of the piston rod 142 is threadedly fitted with an anti-loosening nut 1424; the anti-loosening nut 1424 abuts against the rear end face of the piston 141 to prevent the threaded connection between the piston rod 142 and the piston 141 from loosening.

[0040] The injection assembly also includes an L-shaped mounting plate 15; one side of the mounting plate 15 is provided with a clearance hole 151 corresponding to the connecting ring 132 to facilitate the passage of the connecting ring 132, and the other side is evenly distributed with a number of mounting elongated holes 152 to facilitate connection with the outside; the mounting screw 127 also passes through the mounting plate 15. In this embodiment, there are 4 mounting elongated holes 152.

[0041] The working process of this embodiment:

[0042] ① Single injection

[0043] The through-type screw motor 12 outputs a fixed amount of positive torque; this fixed amount of positive torque is related to the amount of veterinary liquid medicine injected by the injection system in a single injection; this positive torque acts on the piston 141 through the piston rod 142, causing the piston 141 to move forward axially by a certain distance, creating a positive pressure state inside the injection cylinder 11; the veterinary liquid medicine in the injection cylinder 11 is injected out through the three-way connector 18 and the one-way valve 17; the thread pitch in the middle of the piston rod 142 is fixed; the angular displacement output by the through-type screw motor 12 is proportional to the axial displacement of the piston 141; and because the inner diameter of the injection chamber 113 is uniform, the axial displacement of the piston 141 is proportional to the amount of veterinary liquid medicine entering and exiting the injection chamber 113; the operator can determine the single angular displacement output by the through-type screw motor 12 based on the single injection dose, and thus determine the amount of pulse signal sent to the through-type screw motor 12 during a single injection;

[0044] ② Multiple injections

[0045] Repeat step ① until the veterinary liquid medication in syringe 11 is used up;

[0046] ③Injector 11 is used to replenish veterinary liquid medications.

[0047] The through-type lead screw motor 12 outputs reverse torque, driving the piston 141 to move axially backward to the initial position; the inside of the syringe 11 is under negative pressure; the veterinary liquid medicine in the storage chamber is discharged from the outlet pipe 212, and then enters the inside of the syringe 11 through the connecting hose 3, the one-way valve A 16, and the three-way connector 18 in sequence.

[0048] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that: the drug storage chamber includes a chamber body 21 and a cover 22; the top of the chamber body 21 is provided with an inlet pipe 211 for adding veterinary liquid drugs into the storage chamber; the bottom of the chamber body 21 is provided with an outlet pipe 212; the outlet pipe 212 is connected to the connecting hose 3 to deliver veterinary liquid drugs to the injection assembly; the inlet pipe 211 is threaded to the cover 22 to seal the opening of the inlet pipe 211 to prevent foreign objects from entering and contaminating the veterinary liquid drugs or causing the veterinary liquid drugs to splash out; the upper end of the cover 22 is provided with an air hole 221; a duckbill valve 222 is installed in the air hole 221; the duckbill valve 222 is used to balance the air pressure inside and outside the storage chamber, which is conducive to the continuous and stable output of veterinary liquid drugs.

[0049] The medicine storage compartment also includes a quick connector 23 for a double shut-off valve; the outlet pipe 212 is connected to the connecting hose 3 via the quick connector 23 for the double shut-off valve; the quick connector 23 for the double shut-off valve facilitates quick disassembly and assembly, and is convenient for later maintenance.

[0050] The bottom of the container 21 is provided with a conical hopper structure 213; the narrow end of the conical hopper structure 213 is connected to the outlet pipe 212, which facilitates the collection of veterinary liquid drugs.

Claims

1. A continuous and stable injection system, comprising an injection assembly, a drug reservoir, and a connecting hose; the injection assembly includes a syringe, a piston assembly, a one-way valve A, a one-way valve B, and a three-way connector; the piston assembly is inserted into the syringe from back to front; the syringe has a central hole at its front end; the central hole connects to one-way valve A and one-way valve B through the three-way connector; one-way valve A is mounted on the three-way connector in the forward direction; one-way valve B is mounted on the three-way connector in the reverse direction; one-way valve A is connected to the drug reservoir through the connecting hose; characterized in that, The injection assembly also includes a through-type lead screw motor and a guide tube connected front and rear; the through-type lead screw motor is connected to the rear end of the injection barrel; the piston assembly includes a piston that is sealed and slidably fitted with the inner wall of the injection barrel, a piston rod that is coaxially connected with the rear end of the piston, and a sliding shaft located at the rear end of the piston rod; the piston rod passes through the through-type lead screw motor in the middle and is provided with a thread that mates with the through-type lead screw motor; the side wall of the guide tube is provided with an axial groove that slidably fits with the end of the sliding shaft.

2. The injection system with continuous and stable output according to claim 1, characterized in that: Several sealing rings are fitted in the middle of the piston.

3. The injection system with continuous and stable output according to claim 1, characterized in that: The syringe has an injection chamber that slides with the piston; the front end of the injection chamber is a conical cavity; the front end of the piston has a truncated cone that matches the conical cavity.

4. The injection system with continuous and stable output according to claim 1, characterized in that: A protruding ring extends from the outer wall of the rear end of the syringe barrel; the front end of the through-type screw motor is provided with a motor connecting plate, a fastening ring, bolt connections, and mounting screws; the front end face of the motor connecting plate is provided with a concentric piston rod through hole and a fastening groove; the piston rod through hole is set in the fastening groove; the middle part of the piston rod passes through the piston rod through hole; the protruding ring is embedded in the fastening groove; the inner edge of the fastening ring fastens to the protruding ring; the through-type screw motor is connected to the motor connecting plate via mounting screws; the fastening ring is connected to the motor connecting plate via bolt connections.

5. The injection system with continuous and stable output according to claim 1, characterized in that: The front end of the guide tube is equipped with a connecting ring aligned with the front end of the traction tube; the rear end of the through-type lead screw motor is equipped with a motor connecting plate B, several countersunk screws, and several mounting screws B; the front end of the motor connecting plate B is equipped with a piston rod through hole B and several countersunk holes; the piston rod through hole B is located at the center of the motor connecting plate B; the several countersunk holes are evenly distributed around the piston rod through hole B; the middle part of the piston rod passes through the piston rod through hole B; the countersunk screws pass through the countersunk holes and are threadedly connected to the connecting ring; the mounting screws B pass through the motor connecting plate B and are threadedly connected to the rear end of the through-type lead screw motor.

6. The injection system with continuous and stable output according to claim 5, characterized in that: The connecting ring is provided with a radial through groove A that matches the sliding shaft; the piston rod through hole B is provided with a radial through groove B that matches the radial through groove A.

7. The injection system with continuous and stable output according to claim 1, characterized in that: The piston rod has a radial hole at its rear end that matches the sliding shaft; the sliding shaft is inserted into the radial hole; the rear end face of the piston rod has a fixing screw hole; the fixing screw hole is threaded with a set screw; the end of the set screw abuts against the side of the sliding shaft.

8. The injection system with continuous and stable output according to claim 7, characterized in that: The side of the slide shaft is provided with a positioning blind hole that matches the fixing screw hole; the end of the set screw abuts in the positioning blind hole.

9. The injection system with continuous and stable output according to claim 1, characterized in that: The medicine storage compartment includes a compartment body and a cover; the top of the compartment body is equipped with an inlet pipe; the bottom of the compartment body is equipped with an outlet pipe; the inlet pipe is threaded to fit the cover; the upper end of the cover is equipped with an air hole; a duckbill valve is installed inside the air hole; the outlet pipe is connected to a connecting hose.

10. The injection system with continuous and stable output according to claim 9, characterized in that: The medicine storage compartment also includes a quick-connect fitting for a double shut-off valve; the outlet pipe is connected to the connecting hose via the quick-connect fitting for the double shut-off valve.

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