An animal vaccine injection booster device

Abstract

This utility model relates to the field of medical equipment technology, and in particular to an animal vaccine injection booster device, comprising a first air chamber, a second air chamber, a piston assembly, and a gun body; the gun body has a first air chamber and a second air chamber, the first air chamber having a gas source inlet, a gas outlet, and a gas delivery outlet, the gas delivery outlet communicating with the second air chamber, and a control valve also being provided in the first air chamber; when the trigger of the gun body presses the control valve, the control valve blocks the connection between the gas delivery outlet and the gas outlet; when the trigger of the gun body is released, the control valve blocks the connection between the gas delivery outlet and the gas source inlet; the second air chamber has a piston assembly, the piston assembly including a piston and a firing pin, the firing pin being disposed on the piston, and an elastic element being provided between the piston and the firing pin output end of the second air chamber; the trigger is disposed on the grip part of the gun body, the grip part having a grip groove on the side near the trigger, and a thumb groove on the top side of the grip part away from the trigger. This utility model is easy to operate and has a good grip feel.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an animal vaccine injection booster device. Background Technology

[0002] Poultry and livestock farming requires regular disease prevention and treatment, which typically involves injections. Because poultry farming is large-scale, multiple birds are usually vaccinated simultaneously. To reduce poultry resistance and prevent virus transmission through shared syringes, animal vaccine injection boosters are commonly used. These boosters employ needle-free injection, using high pressure, high-speed airflow, or mechanical power to deliver medication into the organism. This method offers high injection efficiency and avoids cross-infection among poultry.

[0003] Existing animal vaccine injection booster devices connect to the firing mechanism via a switch valve. The operator controls the flow of high-pressure gas from the air intake mechanism into the firing mechanism using the switch valve. Because the trigger of these devices is directly connected to the air passage, opening the air passage requires significant force, which can easily cause operator misalignment. Furthermore, the grip of these devices is rather straight, which is ergonomically unsound and results in a poor hand feel over extended periods. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an animal vaccine injection booster device that is easy to operate and has a good grip.

[0005] To address the aforementioned problems, this utility model proposes an animal vaccine injection booster device, comprising a first air chamber, a second air chamber, a piston assembly, and a gun body;

[0006] The gun body is provided with a first gas chamber and a second gas chamber. The first gas chamber is provided with a gas source inlet, a gas outlet, and a gas delivery port. The gas delivery port is connected to the second gas chamber. The first gas chamber is also provided with a control valve. When the trigger of the gun body presses the control valve, the control valve blocks the connection between the gas delivery port and the gas outlet. When the trigger of the gun body is released, the control valve blocks the connection between the gas delivery port and the gas source inlet.

[0007] The piston assembly is provided in the second air chamber. The piston assembly includes a piston and a firing pin. The firing pin is disposed on the piston. An elastic element is provided between the piston and the firing pin output end of the second air chamber.

[0008] The trigger is located on the grip portion of the gun body. The grip portion has a grip groove on the side near the trigger, and a thumb groove on the top side of the grip portion away from the trigger.

[0009] As an improvement to the above technical solution, the control valve is located in the valve chamber of the gun body, and the control valve includes a traveling valve, a valve core, a ejector pin, and a valve cover;

[0010] The traveling valve includes a first sealing part, a sleeve cavity, and a second sealing part; the first sealing part is located in the first air chamber and is used to control the communication between the gas delivery port and the gas source input port or the gas outlet; the traveling valve has a first air passage at one end of the first air chamber, and the first air passage is connected to the sleeve cavity; the second sealing part is provided on the outside of the sleeve cavity, and the second sealing part abuts against the inner wall of the valve cavity.

[0011] The valve core is disposed in the valve cavity. The valve core includes a valve core column and a valve core seat. The valve core column is disposed on the valve core seat. The sleeve cavity is sleeved on the valve core column. The valve core is also provided with a second air passage that communicates from the top surface of the valve core column to the bottom surface of the valve core seat. The valve core seat is also provided with a third air passage that communicates from its top surface to its top.

[0012] The valve cover is located at the bottom of the valve core seat, and a third sealing part is provided on the outer side of the valve cover. The third sealing part abuts against the inner wall of the valve cavity.

[0013] The ejector pin extends through the bottom of the valve cover and into the valve cover, and can move relative to the valve cover. The ejector pin can be driven by the trigger to seal the second air passage. The ejector pin has a fourth sealing part on the side inside the valve cover, and the fourth sealing part can abut against the inner wall of the valve cover.

[0014] As an improvement to the above technical solution, the valve cavity includes an upper valve cavity and a lower valve cavity that are interconnected. The traveling valve is located in the upper valve cavity, and the valve core and valve cover are located in the lower valve cavity. A stepped portion is provided at the junction of the upper valve cavity and the lower valve cavity, and the valve core seat is pressed against the stepped portion by the valve cover.

[0015] As an improvement to the above technical solution, the bottom of the moving valve is provided with a first air chamber, the valve cover is provided with a second air chamber, the pin is located in the second air chamber, and the first air chamber is connected to the second air chamber through a third air passage.

[0016] As an improvement to the above technical solution, the end of the ejector pin located inside the valve cover is a tapered part, and a tapered groove is provided on the contact end between the second air passage and the ejector pin.

[0017] As an improvement to the above technical solution, the angle between the axial direction of the firing part of the gun body and the axial direction of the holding part of the gun body is α, where α is 100-130°.

[0018] As an improvement to the above technical solution, a fifth sealing part is provided on the outer side of the piston, and the fifth sealing part abuts against the inner wall of the second air chamber.

[0019] As an improvement to the above technical solution, the excitation end of the second gas chamber is provided with a firing pin guide portion, and the firing pin guide portion is provided with a firing pin guide channel. One end of the firing pin is located in the firing pin guide channel and can slide along the firing pin guide channel.

[0020] As an improvement to the above technical solution, one end of the firing pin located in the firing pin guide channel is provided with a firing pin extension, which can slide along the firing pin guide channel under the push of the firing pin and can extend out of the firing pin guide portion;

[0021] The firing pin extension has a travel channel at one end near the firing pin, a first limiting part at one end of the travel channel near the firing pin, and a second limiting part at one end of the firing pin located within the travel channel. The first limiting part can contact and limit the firing pin with the second limiting part.

[0022] The outer side of the firing pin extension is provided with a third limiting part, which can contact and limit the edge of the output port of the firing pin guide channel.

[0023] As an improvement to the above technical solution, a three-way syringe is externally connected to the firing pin guide, and the end of the firing pin extension can extend into the three-way syringe.

[0024] The following are the beneficial effects of implementing this utility model:

[0025] (1) A control valve is provided in the first gas chamber of this utility model. By pressing the control valve with a trigger, the control valve connects the gas delivery port to the gas source inlet or the gas outlet. This makes the terminal velocity of the striking pin faster, and can achieve the predetermined process requirements with lower air pressure. It also has low requirements for supporting equipment and is easy to operate.

[0026] (2) The grip part of the gun body has a grip groove on the side near the trigger, and a thumb groove on the top side of the grip part away from the trigger. The grip part structure has been optimized to fit the hand better and improve the operation feel of the device. Attached Figure Description

[0027] Figure 1 This is a side view of an embodiment of the animal vaccine injection booster device of this utility model;

[0028] Figure 2This is a cross-sectional view of an animal vaccine injection booster device according to an embodiment of this utility model;

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the image;

[0030] Figure 4 This is a cross-sectional view of the working state of another firing action of the animal vaccine injection booster device according to an embodiment of this utility model. Detailed Implementation

[0031] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0032] See Figures 1 to 4 As shown, this utility model embodiment provides an animal vaccine injection booster device, including a first air chamber 1, a second air chamber 2, a piston assembly 3, and a gun body;

[0033] The gun body is provided with a first gas chamber 1 and a second gas chamber 2. The first gas chamber 1 is provided with a gas source inlet 11, a gas outlet 12 and a gas delivery port 13. The gas delivery port 13 is connected to the second gas chamber 2. The first gas chamber 1 is also provided with a control valve 4. When the trigger 5 of the gun body 1' presses the control valve 4, the control valve 4 blocks the connection between the gas delivery port 13 and the gas outlet 12. When the trigger 5 of the gun body is released, the control valve 4 blocks the connection between the gas delivery port 13 and the gas source inlet 1.

[0034] The piston assembly 3 is provided in the second air chamber 2. The piston assembly 3 includes a piston 31 and a firing pin 32. The firing pin 32 is disposed on the piston 31. An elastic element 33 is provided between the piston 31 and the firing pin output end of the second air chamber 2.

[0035] The trigger 5 is located on the grip portion 1' of the gun body. The grip portion 1' has a grip groove 11' on the side near the trigger 5, and a thumb groove 12' is provided on the top side of the grip portion 1' away from the trigger 5.

[0036] During operation, the user attaches the syringe to the gun body and presses the trigger 5. This controls the control valve 4 to block the connection between the gas inlet 13 and the gas outlet 12, meaning the second gas chamber 2 is now connected to the gas source inlet 11, allowing high-pressure gas to enter the second gas chamber 2. The piston 31 moves rapidly under the pressure of the high-pressure gas, which in turn moves the firing pin 32. When the trigger 5 is released, the control valve 4 switches back to blocking the connection between the gas inlet 13 and the gas source inlet 11. This connects the gas inlet 13 to the gas outlet 12, rapidly expelling the high-pressure gas from the second gas chamber 2. Under the action of the elastic element 33, the piston 31 quickly returns to its original position.

[0037] Firstly, this invention incorporates a control valve 4 within the first gas chamber 1. By pressing the control valve 4 with the trigger 5, the control valve 4 connects the gas delivery port 13 to the gas source input port 11 or the gas outlet 12. This results in a faster terminal velocity of the impact pin 32, enabling the achievement of predetermined process requirements with lower air pressure. It also reduces the requirements for auxiliary equipment and is easy to operate.

[0038] Secondly, the grip part 1' of the gun body has a grip groove 11' on the side near the trigger 5, and a thumb groove 12' on the top side of the grip part 1' away from the trigger 5. The structure of the grip part 1' has been optimized to fit the hand better and improve the operating feel of the device.

[0039] In some embodiments, the control valve 4 may be an existing general valve having a valve core that is directly connected to the trigger 5 and can be displaced by the trigger 5. When the valve core is in a predetermined position, it can block the first air passage, and when it is displaced by the trigger, it can open the first air passage.

[0040] Specifically, the control valve 4 is located in the valve chamber 6 of the gun body, and the control valve 4 includes a traveling valve 41, a valve core 42, a ejector pin 44, and a valve cover 43;

[0041] The traveling valve 41 includes a first sealing part 413, a sleeve cavity 412, and a second sealing part 414. The first sealing part 413 is located in the first air chamber 1 and is used to control the communication between the gas delivery port 13 and the gas source input port 11 or the gas outlet port 12. The traveling valve 41 has a first air passage 411 at one end of the first air chamber 1, and the first air passage 411 is connected to the sleeve cavity 412. The second sealing part 414 is provided on the outside of the sleeve cavity 412, and the second sealing part 414 abuts against the inner wall of the valve cavity 6.

[0042] The valve core 42 is disposed in the valve cavity 6. The valve core 42 includes a valve core column 421 and a valve core seat 422. The valve core column 421 is disposed on the valve core seat 422. The sleeve cavity 412 is sleeved on the valve core column 421. The valve core 42 is also provided with a second air passage 423 that communicates from the top surface of the valve core column 421 to the bottom surface of the valve core seat 422. The valve core seat 422 is also provided with a third air passage 424 that communicates from its top surface to its top.

[0043] The valve cover 43 is located at the bottom of the valve core seat 422. A third sealing part 431 is provided on the outer side of the valve cover 43. The third sealing part 431 abuts against the inner wall of the valve cavity 6.

[0044] The ejector pin 44 extends through the bottom of the valve cover 43 and is movable relative to the valve cover 43. The ejector pin 44 can be driven by the trigger 5 to seal the second air passage 423. The ejector pin 44 has a fourth sealing part 441 on the side inside the valve cover 43. The fourth sealing part 441 can abut against the inner wall of the valve cover 43.

[0045] During operation, pressing the trigger 5 causes the ejector pin 44 to block the second air passage 423. High-pressure gas cannot enter the space between the valve core seat 422 and the sleeve cavity 412 from the second air passage 423. Furthermore, the fourth sealing part 441 at the ejector pin 44 moves away from the valve cover 43, and the original high-pressure gas is rapidly discharged from the gap between the ejector pin 44 and the valve cover 43. At this time, the air pressure at both ends of the traveling valve 41 becomes unbalanced, causing it to rapidly move towards the valve cover 43, thereby blocking the connection between the gas delivery port 13 and the gas outlet 12. When trigger 5 is released, the second air passage 423 connects to the air source inlet 11 through the first air passage 411. High-pressure gas flows through the second air passage 423 to the space between the valve core seat 422 and the sleeve cavity 412. After the ejector pin 44 resets, the fourth sealing part 441 seals the gap between it and the valve cover 43, preventing the high-pressure gas from flowing out. This causes a change in the air pressure at both ends of the traveling valve 41, and the traveling valve 41 moves to the position that blocks the gas delivery port 13 from the air source inlet 11. At this time, the gas delivery port 13 connects to the gas outlet 12, and the high-pressure gas in the second air chamber 2 is quickly discharged.

[0046] More preferably, the bottom of the traveling valve 41 is provided with a first gas cavity 46, the valve cover 43 is provided with a second gas cavity 45, the ejector pin 44 is located in the second gas cavity 45, and the first gas cavity 46 is connected to the second gas cavity 45 through a third gas passage 424. It should be noted that when the ejector pin 44 releases the blockage of the second gas passage 423, high-pressure gas flows sequentially from the first gas passage 411, the second gas passage 423, the third gas passage 424, the second gas cavity 45, and the first gas cavity 46. Therefore, the air pressure will push the traveling valve 41 towards the first gas chamber 1. When the ejector pin 44 blocks the second gas passage 423, the high-pressure gas in the first gas cavity 46 flows from the third gas passage 424 to the second gas cavity 45, and then flows out from the gap between the ejector pin 44 and the valve cover 43, causing the air pressure in the first gas cavity 46 to drop rapidly, and the traveling valve 41 moves towards the valve cover 43.

[0047] With the above-mentioned control valve 4 structure, the ejector pin 44 is less affected by the gas pressure in the first gas chamber 46. Therefore, the operator only needs to apply a small force to push the ejector pin 44 to move, thereby controlling the supply of compressed gas. The operation is sensitive and quick.

[0048] In some embodiments, the valve chamber 6 includes an upper valve chamber and a lower valve chamber that are interconnected. The traveling valve 41 is disposed in the upper valve chamber, and the valve core 42 and valve cover 43 are disposed in the lower valve chamber. A stepped portion is provided at the junction of the upper and lower valve chambers, and the valve core seat 422 is pressed against the stepped portion by the valve cover 43. With the cavity design of the upper and lower valve chambers, the traveling valve 41, valve core 42, ejector pin 44, and valve cover 43 only need to be sequentially installed into the valve chamber 6. The traveling valve 41 moves in the upper valve chamber, while the valve core 42 is fixed in a predetermined position in the valve chamber. The traveling valve 41, valve core 42, and valve cover 43 all have a sealing design with the valve chamber 6 to prevent gas from escaping from the gaps between the traveling valve 41, valve core 42, and valve cover 43 and the valve chamber 6.

[0049] In some embodiments, the end of the ejector pin 44 located inside the valve cover is a tapered portion 442, and a tapered groove is provided on the contact end between the second air passage 423 and the ejector pin 44. This improves the sealing performance between the ejector pin and the second air passage 423.

[0050] In some embodiments, the angle between the axial direction of the firing section 2' and the axial direction of the grip section 1' of the gun body is α, where α is 100-130°. This embodiment optimizes the setting angle of the firing section 2' and the grip section 1' of the gun body, making it easier for the user to hold and effectively improving the grip feel of the device.

[0051] In some embodiments, a fifth sealing part 34 is provided on the outer side of the piston 31, and the fifth sealing part 34 abuts against the inner wall of the second air chamber 2.

[0052] Preferably, the excitation end of the second gas chamber 2 is provided with a firing pin guide portion 7, and the firing pin guide portion 7 is provided with a firing pin guide channel 71. One end of the firing pin 32 is located in the firing pin guide channel 71 and can slide along the firing pin guide channel 71. This effectively guides the sliding of the firing pin 32, solves the problem of easy deformation of the firing pin 32 during impact, and improves the service life of the device.

[0053] Wherein, the firing pin 32 is provided with a firing pin extension 72 at one end inside the firing pin guide channel 71. The firing pin extension 72 can slide along the firing pin guide channel 71 under the push of the firing pin 32 and can extend out of the firing pin guide part 7.

[0054] The firing pin extension 72 is provided with a travel channel 73 at one end near the firing pin 32. The travel channel 73 is provided with a first limiting part 74 at one end near the firing pin 32. The firing pin 32 is provided with a second limiting part at one end located in the travel channel 73. The first limiting part 74 can contact and limit the second limiting part.

[0055] The outer side of the firing pin extension 72 is provided with a third limiting part 75, which can contact and limit the edge of the output port of the firing pin guide channel 71.

[0056] Preferably, a three-way syringe 8 is externally connected to the firing pin guide 7, and the end of the firing pin extension 72 can extend into the three-way syringe 8.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An animal vaccine injection booster device, characterized in that, Includes the first air chamber, the second air chamber, the piston assembly, and the gun body; The gun body is provided with a first gas chamber and a second gas chamber. The first gas chamber is provided with a gas source inlet, a gas outlet, and a gas delivery port. The gas delivery port is connected to the second gas chamber. The first gas chamber is also provided with a control valve. When the trigger of the gun body presses the control valve, the control valve blocks the connection between the gas delivery port and the gas outlet. When the trigger of the gun body is released, the control valve blocks the connection between the gas delivery port and the gas source inlet. The piston assembly is provided in the second air chamber. The piston assembly includes a piston and a firing pin. The firing pin is disposed on the piston. An elastic element is provided between the piston and the firing pin output end of the second air chamber. The trigger is located on the grip portion of the gun body. The grip portion has a grip groove on the side near the trigger, and a thumb groove on the top side of the grip portion away from the trigger.

2. The animal vaccine injection booster device as described in claim 1, characterized in that, The control valve is located in the valve chamber of the gun body, and the control valve includes a traveling valve, a valve core, a ejector pin, and a valve cover; The traveling valve includes a first sealing part, a sleeve cavity, and a second sealing part; the first sealing part is located in the first air chamber and is used to control the communication between the gas delivery port and the gas source input port or the gas outlet; the traveling valve has a first air passage at one end of the first air chamber, and the first air passage is connected to the sleeve cavity; the second sealing part is provided on the outside of the sleeve cavity, and the second sealing part abuts against the inner wall of the valve cavity. The valve core is disposed in the valve cavity. The valve core includes a valve core column and a valve core seat. The valve core column is disposed on the valve core seat. The sleeve cavity is sleeved on the valve core column. The valve core is also provided with a second air passage that communicates from the top surface of the valve core column to the bottom surface of the valve core seat. The valve core seat is also provided with a third air passage that communicates from its top surface to its top. The valve cover is located at the bottom of the valve core seat, and a third sealing part is provided on the outer side of the valve cover. The third sealing part abuts against the inner wall of the valve cavity. The ejector pin extends through the bottom of the valve cover and into the valve cover, and can move relative to the valve cover. The ejector pin can be driven by the trigger to seal the second air passage. The ejector pin has a fourth sealing part on the side inside the valve cover, and the fourth sealing part can abut against the inner wall of the valve cover.

3. The animal vaccine injection booster device as described in claim 2, characterized in that, The valve chamber includes an upper valve chamber and a lower valve chamber that are interconnected. The traveling valve is located in the upper valve chamber, and the valve core and valve cover are located in the lower valve chamber. A stepped portion is provided at the junction of the upper valve chamber and the lower valve chamber, and the valve core seat is pressed against the stepped portion by the valve cover.

4. The animal vaccine injection booster device as described in claim 2, characterized in that, The bottom of the moving valve is provided with a first air chamber, the valve cover is provided with a second air chamber, the pin is located in the second air chamber, and the first air chamber is connected to the second air chamber through a third air passage.

5. The animal vaccine injection booster device as described in claim 2, characterized in that, The end of the ejector pin located inside the valve cover is tapered, and the second air passage has a tapered groove at the contact end with the ejector pin.

6. The animal vaccine injection booster device as described in claim 1, characterized in that, The angle between the axial direction of the firing part of the gun body and the axial direction of the holding part of the gun body is α, where α is 100-130°.

7. The animal vaccine injection booster device as described in claim 1, characterized in that, The piston has a fifth sealing part on its outer side, and the fifth sealing part abuts against the inner wall of the second air chamber.

8. The animal vaccine injection booster device as described in claim 1, characterized in that, The second gas chamber has a firing pin guide at the excitation end, and a firing pin guide channel is provided in the firing pin guide. One end of the firing pin is located in the firing pin guide channel and can slide along the firing pin guide channel.

9. The animal vaccine injection booster device as described in claim 8, characterized in that, The firing pin is fitted with a firing pin extension at one end within the firing pin guide channel. The firing pin extension can slide along the firing pin guide channel under the push of the firing pin and can extend beyond the firing pin guide portion. The firing pin extension has a travel channel at one end near the firing pin, a first limiting part at one end of the travel channel near the firing pin, and a second limiting part at one end of the firing pin located within the travel channel. The first limiting part can contact and limit the firing pin with the second limiting part. The outer side of the firing pin extension is provided with a third limiting part, which can contact and limit the edge of the output port of the firing pin guide channel.

10. The animal vaccine injection booster device as described in claim 9, characterized in that, A three-way syringe is connected to the outside of the firing pin guide, and the end of the firing pin extension can extend into the three-way syringe.

Images