Chicken embryo puncher for biosafety laboratory inoculation

Abstract

The utility model discloses a chick embryo puncher for inoculation in a biological safety laboratory, belongs to the technical field of biological inoculation devices, and aims to solve the problems that an operator has relatively weak control force on human muscles and is easy to crush shells to cause chick embryo waste along with the increase of working time when the chick embryo is punched manually at present. The chick embryo puncher comprises a front-end firing pin supporting unit, a firing pin unit and a rear-end cylinder supporting unit, the front-end firing pin supporting unit is arranged at the front end of the firing pin unit in a sleeving mode and detachably connected with the firing pin unit, and a punching part of the firing pin unit is inserted into the front-end firing pin supporting unit and detachably connected with the rear-end cylinder supporting unit. The front end firing pin supporting unit is arranged at the front end of the firing pin unit in an inserted mode, a gap is formed between a punching part of the firing pin unit and the front end firing pin supporting unit, the rear end cylinder body supporting unit is arranged at the rear end of the firing pin unit in an inserted mode and detachably connected with the firing pin unit, and the interior of the firing pin unit communicates with the interior of the rear end cylinder body supporting unit. The punching device is mainly used for chick embryo inoculation in a biosafety laboratory.

Description

Technical Field

[0001] The utility model belongs to the technical field of biological inoculation devices, and in particular relates to a chicken embryo puncher for inoculation in a biosafety laboratory. Background Art

[0002] During the chicken embryo inoculation process, the inoculum needs to be injected into the chicken embryo through a syringe and then incubated in an incubator. During this process, since the chicken embryo is protected by a shell outside, a small hole needs to be punched in the shell with the help of a puncher, and then the needle of the syringe is inserted into the small hole in the shell for injection. The existing puncher is usually a punching cone, and the experimenter uses the tip of the cone head to hammer the shell at a marked position to punch the shell. When punching, it should be noted that the purpose of the punching operation is only to destroy the shell of the chicken embryo so that the needle of the syringe can pass through, not to completely break the shell. Therefore, the punching force required for the experimenter is very high. The strength of the punching cone is very high, and in actual operation, as the working hours of the experimenters increase, the control of the muscles of the human body decreases. Therefore, it is difficult to control the strength when using the punching cone to make holes, and the shell is easy to break. After the inoculum is injected, the punched area needs to be sealed with paraffin before it can be transferred to the incubator. If the shell is broken, the protective layer outside the chicken embryo will be damaged and can no longer provide a good environment for inoculation, which will lead to the waste of the chicken embryo. Therefore, in view of the drawbacks of the punching process in the traditional chicken embryo inoculation process, it is very in line with the actual needs to develop a chicken embryo puncher for inoculation in a biosafety laboratory. Utility Model Content

[0003] The utility model aims to solve the problem that when punching holes in chicken embryos manually for a long time, the operator has weak control over human muscles, which easily causes the shell to be broken and the chicken embryo to be wasted, and thus provides a chicken embryo puncher for inoculation in a biosafety laboratory;

[0004] A chicken embryo puncher for inoculation in a biosafety laboratory, the chicken embryo puncher comprising a front end striker support unit, a striker unit and a rear end cylinder support unit, the front end striker support unit is sleeved on the front end of the striker unit, and the front end striker support unit is detachably connected to the striker unit, a punching portion of the striker unit is inserted in the front end striker support unit, and a gap is provided between the punching portion of the striker unit and the front end striker support unit, a rear end cylinder support unit is inserted at the rear end of the striker unit, and the rear end cylinder support unit is detachably connected to the striker unit, and the interior of the striker unit is connected to the interior of the rear end cylinder support unit;

[0005] Further, the front end firing pin support unit includes a buffer rubber pad, a barrel and a firing pin holder, the buffer rubber pad is sleeved on the closed end of the barrel, and the buffer rubber pad is detachably connected to the barrel, the firing pin holder is inserted in the barrel, and the firing pin holder is detachably connected to the barrel, a No. 1 firing pin through hole is provided at the center of the firing pin holder, a No. 2 firing pin through hole is processed at the center of the closed end of the barrel, a No. 3 firing pin through hole is processed at the center of the buffer rubber pad, and the axes of the No. 1 firing pin through hole, the No. 2 firing pin through hole and the No. 3 firing pin through hole are collinearly arranged, the open end of the barrel is sleeved on the front end of the firing pin unit, and the barrel is detachably connected to the firing pin unit;

[0006] The rear end cylinder support unit comprises a rear pressure cover, a rear end cover, a rear cover buffer seal, a rear end piston, a rear end piston buffer seal, a buffer, a rear end piston seal ring, a rear end inner hole seal ring, a compression spring and a gasket, the rear end cover is inserted at the rear end of the striker unit, and the rear end cover is detachably connected to the striker unit, the rear pressure cover is arranged at an end of the rear end cover away from the striker unit, and a gasket is arranged between the rear pressure cover and the rear end cover, the rear pressure cover and the rear end cover are detachably connected by bolts, the rear end piston is inserted in the rear end cover, and the rear end piston and the rear end cover are gap-matched, the rear end of the rear end piston passes through the inner hole on the rear end cover and is arranged in the cavity between the rear pressure cover and the rear end cover, the rear end of the rear end piston is sealed with the inner hole of the rear end cover by the rear end inner hole seal ring, the head end of the rear end piston is arranged in the front cavity of the rear end cover, and the head end of the rear end piston is sealed with the front cavity inner wall of the rear end cover by the rear end piston seal ring, an annular groove is processed on the head end surface of the rear end piston, and the rear end piston is The plug buffer seal is embedded in the annular embedding groove at the front end of the rear end piston, and a rear end piston exhaust hole is processed at the center of the front end of the rear end piston, and the axis of the rear end piston exhaust hole is collinear with the axis of the rear end piston, and a spring accommodating hole is processed at the center of the rear end of the rear end piston, and the spring accommodating hole is connected with the piston exhaust hole, the axis of the piston exhaust hole is collinear with the axis of the spring accommodating hole, and the aperture of the spring accommodating hole is larger than the aperture of the piston exhaust hole, a buffer pad is provided in one end of the spring accommodating hole close to the piston exhaust hole, and the buffer pad is axially limited by a step formed between the spring accommodating hole and the piston exhaust hole, a compression spring is arranged in the spring accommodating hole, and one end of the compression spring is fixedly connected to the buffer pad, the other end of the compression spring extends to the cavity between the rear pressure cover and the rear end cover, and the other end of the compression spring is detachably connected to the rear pressure cover, and a rear end air inlet hole No. 1 is processed on the inner wall of the front cavity in the rear end cover, and the front cavity in the rear end cover is connected with the striker unit through the rear end air inlet hole;

[0007] Furthermore, the firing pin unit includes a shell, a trigger, a valve needle, a return spring, a valve needle sealing ring, a valve body air inlet hole, an impact air storage cavity, an impact cylinder sealing ring, a firing pin cylinder barrel, a firing pin piston sealing ring, a firing pin piston, a firing pin and a rebound air storage cavity. The shell is arranged between the barrel and the rear end cover, and the front end of the shell is detachably connected to the open end of the barrel, and the front end of the shell is detachably connected to the front end of the rear end cover. The trigger is arranged at the top of the shell, and one end of the trigger is hinged to the shell. An air valve is arranged below the trigger, and the air valve is inserted into the valve body mounting cavity on the shell. A second rear end air inlet hole is processed on one side of the valve body mounting cavity, and the second rear end air inlet hole is arranged corresponding to the first rear end air inlet hole. A valve body air inlet hole is processed at the bottom of the valve body mounting cavity, and the valve body mounting cavity is through When unclamping the piston, the piston rod of the piston rod is regulated by the pressure of the piston rod, and the piston rod of the piston rod is regulated by the pressure of the piston rod, and the piston rod of the piston rod is regulated by the pressure of the piston rod. The sealing ring is sealed with the No. 2 air outlet hole in the air valve, the firing pin cylinder is inserted in the outer shell, and the firing pin cylinder is sealed with the outer shell through the impact cylinder sealing ring, the tail end of the firing pin cylinder is arranged in the impact air storage cavity in the outer shell, the head end of the firing pin cylinder is arranged in the rebound air storage cavity in the outer shell, a plurality of impact cylinder exhaust holes are equidistantly processed along the circumferential direction on the head end of the firing pin cylinder, and the plurality of impact cylinder exhaust holes are arranged near the end of the rebound air storage cavity away from the front end firing pin support unit, the exhaust end of each impact cylinder exhaust hole is connected to the rebound air storage cavity, the air inlet end of each impact cylinder exhaust hole is connected to the firing pin cylinder, a plurality of impact piston rebound air inlet holes are equidistantly processed along the circumferential direction on the head end of the firing pin cylinder, and the plurality of impact piston rebound air inlet holes are A device is provided near the rebound air storage chamber and near one end of the front end striker support unit, the exhaust end of each impact piston rebound air inlet hole is connected to the rebound air storage chamber, the air inlet end of each impact piston rebound air inlet hole is connected to the striker cylinder, a striker piston is provided in the striker cylinder, the striker piston is sealed with the striker cylinder through a striker piston sealing ring, the mounting end of the striker is inserted on the striker piston, the punching end of the striker passes through the striker cylinder and the shell in turn and extends to the No. 1 striker through hole in the striker retainer, and the striker and the No. 1 striker through hole, the No. 2 striker through hole and the No. 3 striker through hole are all clearance-matched, the rear end of the shell is processed with a rear end connecting chamber, and the impact air storage chamber is connected to the rear end connecting chamber, the shell is sleeved on the rear end cover through the rear end connecting chamber,The tail end face of the striker cylinder barrel is arranged correspondingly to the rear piston buffer seal in the rear cylinder support unit, the tail of the striker piston is provided with an extension plug, and the extension plug at the tail of the striker piston is arranged coaxially correspondingly to the piston exhaust hole in the rear cylinder support unit;

[0008] Furthermore, an inner wall of the opening end of the sleeve barrel is processed with an internal installation thread, an extension section is provided on the front end of the shell, an external installation thread is processed on the outer circumferential surface of the extension section, and the internal installation thread and the external installation thread are arranged in a corresponding manner, the opening end of the sleeve barrel is sleeved on the extension section of the shell, and the sleeve barrel and the shell are detachably connected by the internal installation thread and the external installation thread;

[0009] Furthermore, a limited blind hole is processed at the center of the end of the extension section close to one end of the barrel, the limited blind hole is arranged in cooperation with the striker retainer, and the extension section is sleeved on the striker retainer through the limited blind hole;

[0010] Further, the rear end of the shell is processed with a plurality of rear end threaded holes, the rear end cover is processed with a plurality of No. 1 mounting through holes, the rear pressure cover is processed with a plurality of No. 2 mounting through holes, and each rear end threaded hole is coaxially arranged with a No. 1 mounting through hole and a No. 2 mounting through hole, and each rear end threaded hole and a No. 1 mounting through hole and a No. 2 mounting through hole are inserted with a mounting bolt, and the rear pressure cover and the rear end cover are detachably connected to the shell through a plurality of mounting bolts:

[0011] The beneficial effects of this application compared to the prior art are as follows:

[0012] Compared with the traditional punching cone, the chicken embryo puncher for inoculation in a biosafety laboratory proposed in the present application does not require manual hammering force, but controls the distribution of internal gas through a trigger to achieve pneumatic ejection of the firing pin. It is an automatic punching device, and the entire punching process is accurate and fast, which can improve the success rate of one-time punching. When using the punching cone provided by the present application for punching, the operation process is very convenient. A flexible buffer rubber pad is provided at the end of the puncher, which contacts the chicken embryo through the flexible buffer rubber pad, thereby providing circumferential protection and buffering for the chicken embryo, avoiding the impact force from spreading to the surface of the shell and causing the shell to rupture during single-point punching, greatly reducing the chicken embryo scrap rate caused by the punching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a main cross-sectional schematic diagram of the chicken embryo puncher described in this application;

[0014] Figure 2 This is a main cross-sectional schematic diagram of the front end striker support unit in the chicken embryo puncher described in the present application;

[0015] Figure 3 This is a main cross-sectional schematic diagram of the rear end cylinder support unit in the chicken embryo puncher described in the present application;

[0016] Figure 4 This is a main cross-sectional schematic diagram of the striker unit of the chicken embryo puncher described in the present application;

[0017] Figure 5 This is a schematic diagram of the appearance of the striker unit of the chicken embryo puncher described in this application (top view);

[0018] Figure 6 This is a schematic diagram of the appearance of the striker unit of the chicken embryo puncher described in this application (bottom perspective);

[0019] In the figure, 1 is a front end striker support unit, 2 is a striker unit, 3 is a rear end cylinder support unit, 4 is a cushion pad, 4 is a No. 3 striker through hole, 5 is a barrel, 5 is a No. 2 striker through hole, 6 is a striker retainer, 6 is a No. 1 striker through hole, 7 is a rear pressure cover, 8 is a rear end cover, 9 is a rear cover cushion gasket, 10 is a rear end piston, 11 is a rear end piston cushion gasket, 12 is a rear end piston exhaust hole, 13 is a cushion pad, 14 is a rear end piston sealing ring, 15 is a rear end inner hole sealing ring , 16 compression spring, 17 rear end air inlet hole, 18 gasket, 19 housing, 20 trigger, 21 valve needle, 22 return spring, 23 valve needle sealing ring, 24 valve body air inlet hole, 25 impact air storage chamber, 26 impact cylinder sealing ring, 27 striker cylinder barrel, 28 striker piston sealing ring, 29 striker piston, 30 striker, 31 rebound air storage chamber, 32 striker piston rebound air inlet hole, 33 striker cylinder exhaust hole and 34 No. 2 rear end air inlet hole. DETAILED DESCRIPTION

[0020] Specific implementation method 1: Combination Figures 1 to 4 The present embodiment is described. In the present embodiment, a chicken embryo puncher for inoculation in a biosafety laboratory is provided, characterized in that: the chicken embryo puncher comprises a front end striker support unit 1, a striker unit 2 and a rear end cylinder support unit 3, the front end striker support unit 1 is sleeved on the front end of the striker unit 2, and the front end striker support unit 1 is detachably connected to the striker unit 2, the punching portion of the striker unit 2 is inserted in the front end striker support unit 1, and a gap is provided between the punching portion of the striker unit 2 and the front end striker support unit 1, the rear end cylinder support unit 3 is inserted at the rear end of the striker unit 2, and the rear end cylinder support unit 3 is detachably connected to the striker unit 2, and the interior of the striker unit 2 is connected to the interior of the rear end cylinder support unit 3.

[0021] In this embodiment, the front end striker support unit 1 is mainly used to flexibly contact the surface of the chicken embryo and guide the striker to ensure the accuracy of the trajectory of the striker when it is pneumatically extended. The striker unit 2 is mainly used to control the extension and retraction of the striker to achieve the punching action. The rear end cylinder support unit 3 is used to limit the piston.

[0022] Specific implementation method 2: Combination Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first embodiment is that the front end striker support unit 1 includes a buffer rubber pad 4, a barrel 5 and a striker holder 6. The buffer rubber pad 4 is sleeved on the closed end of the barrel 5, and the buffer rubber pad 4 is detachably connected to the barrel 5. The striker holder 6 is inserted into the barrel 5, and the striker holder 6 is detachably connected to the barrel 5. A No. 1 striker through hole 61 is provided at the center of the striker holder 6. A No. 2 striker through hole 51 is processed at the center of the closed end of the barrel 5. A No. 3 striker through hole 41 is processed at the center of the buffer rubber pad 4, and the axis of the No. 1 striker through hole 61, the axis of the No. 2 striker through hole 51 and the axis of the No. 3 striker through hole 41 are arranged in the same line. The open end of the barrel 5 is sleeved on the front end of the striker unit, and the barrel 5 is detachably connected to the striker unit. Other components and connection methods are the same as those of the first embodiment.

[0023] In this embodiment, the barrel 5 is the main supporting component, the buffer rubber pad 4 is used to make flexible contact with the chicken embryo to prevent large-scale rupture of the chicken embryo shell during the punching process, and the striker retainer 6 is used to guide the striker and limit the movement trajectory of the striker so that it can accurately impact the target area to achieve the punching action.

[0024] Specific implementation method three: Combination Figures 1 to 4The present embodiment is described. The present embodiment is different from the second embodiment in that the rear end cylinder support unit 3 includes a rear pressure cover 7, a rear end cover 8, a rear cover buffer seal 9, a rear end piston 10, a rear end piston buffer seal 11, a buffer 13, a rear end piston seal 14, a rear end inner hole seal 15, a clamping spring 16 and a gasket 18. The rear end cover 8 is inserted at the rear end of the striker unit 2, and the rear end cover 8 is detachably connected to the striker unit 2. The rear pressure cover 7 is arranged at one end of the rear end cover 8 away from the striker unit 2, and a gasket 18 is arranged between the rear pressure cover 7 and the rear end cover 8. The cover 7 is detachably connected with the rear end cover 8 by bolts, the rear end piston 10 is inserted in the rear end cover 8, and the rear end piston 10 and the rear end cover 8 are arranged with clearance, the tail end of the rear end piston 10 passes through the inner hole on the rear end cover 8 and is arranged in the cavity between the rear pressure cover 7 and the rear end cover 8, the tail end of the rear end piston 10 is sealed with the inner hole of the rear end cover 8 through the rear end inner hole sealing ring 15, the head end of the rear end piston 10 is arranged in the front cavity of the rear end cover 8, and the head end of the rear end piston 10 is sealed with the inner wall of the front cavity of the rear end cover 8 through the rear end piston sealing ring 14, and the head end face of the rear end piston 10 is processed with The rear piston buffer seal 11 is embedded in the annular groove at the front end of the rear piston 10. A rear piston exhaust hole 12 is processed at the center of the front end of the rear piston 10, and the axis of the rear piston exhaust hole 12 is collinear with the axis of the rear piston 10. A spring accommodating hole is processed at the center of the rear end of the rear piston 10, and the spring accommodating hole is connected to the piston exhaust hole 12. The axis of the piston exhaust hole 12 is collinear with the axis of the spring accommodating hole, and the aperture of the spring accommodating hole is larger than the aperture of the piston exhaust hole 12. The spring accommodating hole is provided at one end close to the piston exhaust hole 12. The buffer pad 13 is axially limited by the step formed between the spring receiving hole and the piston exhaust hole 12, the compression spring 16 is arranged in the spring receiving hole, and one end of the compression spring 16 is detachably connected to the rear gland 7, the other end of the compression spring 16 extends into the cavity between the rear gland 7 and the rear end cover 8, and the other end of the compression spring 16 is fixedly connected to the rear cover buffer seal 9 arranged at the center of the rear gland 7, and a rear end air inlet hole 17 is processed on the inner wall of the front cavity in the rear end cover 8, and the front cavity in the rear end cover 8 is connected to the striker unit 2 through the rear end air inlet hole 17. Other components and connection methods are the same as those of the second specific embodiment.

[0025] In the present embodiment, the rear end cylinder support unit 3 is used to limit the position inside the striker unit 2. Before the striker is pneumatically ejected, the striker unit 2 is supported by the rear end cover 8 and the rear end piston buffer seal 11. After the striker is pneumatically ejected, the gas enters between the piston buffer seal 11 and the piston, and while driving the striker to eject, it also compresses the clamping spring 16, driving the rear end piston 10 to move backward. After the striker rebounds, the rear end piston 10 actively caters to the striker under the rebound action of the clamping spring 16 to ensure a stable rebound action.

[0026] Specific implementation method four: Combination Figures 1 to 4The present embodiment is described. The present embodiment is different from the specific embodiment 3 in that the firing pin unit 2 comprises a housing 19, a trigger 20, a valve needle 21, a return spring 22, a valve needle sealing ring 23, a valve body air inlet 24, an impact air storage cavity 25, an impact cylinder sealing ring 26, a firing pin cylinder barrel 27, a firing pin piston sealing ring 28, a firing pin piston 29, a firing pin 30 and a rebound air storage cavity 31. The housing 19 is disposed between the barrel 5 and the rear end cover 8, and the front end of the housing 19 is detachably connected to the open end of the barrel 5, and the front end of the housing 19 is detachably connected to the front end of the rear end cover 8. The trigger 20 is disposed at the top of the housing 19, and one end of the trigger 20 is hingedly connected to the housing 19. An air escape valve is disposed below the trigger 20, and the air escape valve is inserted into the housing 19. In the valve body installation cavity, a No. 2 rear end air inlet hole 34 is processed on one side of the valve body installation cavity, and the No. 2 rear end air inlet hole 34 is corresponding to the No. 1 rear end air inlet hole 17, a valve body air inlet hole 24 is processed on the bottom of the valve body installation cavity, and the valve body installation cavity is connected with the impact air storage cavity 25 in the shell 19 through the valve body air inlet hole 24, the air inlet hole of the air valve is coaxially corresponding to the valve body air inlet hole 24, the No. 1 air outlet hole of the air valve is coaxially corresponding to the No. 2 rear end air inlet hole 34, the No. 2 air outlet hole of the air valve is located at the top of the valve body and is connected to the external atmosphere, a valve needle 21 is inserted in the No. 2 air outlet hole of the air valve, the top end of the valve needle 21 extends out of the top of the valve body and is inserted into the bottom of the trigger 20, and a reset spring 22 is sleeved on the outer circumferential surface of the top end of the valve needle 21. One end of the spring 22 is fixedly connected to the top of the valve body, and the other end of the return spring 22 is fixedly connected to the bottom of the trigger 20. The bottom end of the valve needle 21 is arranged in the valve body, and the bottom end of the valve needle 21 is coaxially arranged with the air inlet of the valve body. A valve needle sealing ring 23 is arranged between the bottom end of the valve needle 21 and the inner top wall of the valve body, and the bottom end of the valve needle 21 is sealed with the No. 2 air outlet in the air valve through the valve needle sealing ring 23. The striker cylinder barrel 27 is inserted in the outer shell 19, and the striker cylinder barrel 27 is sealed with the outer shell 19 through the striker cylinder sealing ring 26. The tail end of the striker cylinder barrel 27 is arranged in the striker gas storage cavity 25 in the outer shell 19, and the head end of the striker cylinder barrel 27 is arranged in the rebound gas storage cavity 31 in the outer shell 19. The upper edge of the head end of the striker cylinder barrel 27 A plurality of impact cylinder exhaust holes 33 are processed at equal intervals in the circumferential direction, and the plurality of impact cylinder exhaust holes 33 are arranged near one end of the rebound air storage cavity 31 away from the front end striker support unit 1, the exhaust end of each impact cylinder exhaust hole 33 is connected to the rebound air storage cavity 31, and the intake end of each impact cylinder exhaust hole 33 is connected to the striker cylinder barrel 27, and a plurality of impact piston rebound air inlet holes 32 are processed at equal intervals in the circumferential direction along the upper edge of the head end of the striker cylinder barrel 27, and the plurality of impact piston rebound air inlet holes 32 are arranged near one end of the rebound air storage cavity 31 close to the front end striker support unit 1, the exhaust end of each impact piston rebound air inlet hole 32 is connected to the rebound air storage cavity 31, and the intake end of each impact piston rebound air inlet hole 32 is connected to the striker cylinder barrel 27.A striker piston 29 is provided in the striker cylinder 27, and the striker piston 29 is sealed with the striker cylinder 27 through a striker piston sealing ring 28. The mounting end of the striker 30 is inserted on the striker piston 29, and the punching end of the striker 30 passes through the striker cylinder 27 and the outer shell 19 in turn and extends to the No. 1 striker through hole 61 in the striker retainer 6, and the striker 30 and the No. 1 striker through hole 61, the No. 2 striker through hole 51 and the No. 3 striker through hole 41 are all clearance-fitted. A rear end connecting cavity is processed at the rear end of the outer shell 19, and the striker air storage cavity 25 is connected to the rear end connecting cavity. The outer shell 19 is sleeved on the rear end cover 8 through the rear end connecting cavity, and the rear end face of the striker cylinder 27 is corresponding to the rear end piston buffer seal 11 in the rear end cylinder support unit 3, and an extension plug is provided at the tail of the striker piston 29, and the extension plug at the tail of the striker piston 29 is coaxially corresponding to the piston exhaust hole 12 in the rear end cylinder support unit 3. The other components and connection methods are the same as those of the third embodiment.

[0027] In the present embodiment, the firing pin unit 2 is the main component of the present application, which includes a trigger mechanism for controlling the action of the firing pin 30 and an internal chamber for driving the firing pin 30 to rebound. A valve body is provided under the trigger 20. The trigger 20 drives the valve needle 21 to control the air path inside the valve body to realize the conversion of the air path in the control shell, thereby providing power for the shooting action and rebound action of the firing pin 30.

[0028] Specific implementation method five: Combination Figures 1 to 4 This embodiment is described. The difference between this embodiment and the fourth embodiment is that the inner wall of the opening end of the sleeve barrel 5 is processed with an internal installation thread, the front end of the shell 19 is provided with an extension section, the outer circumferential surface of the extension section is processed with an external installation thread, and the internal installation thread and the external installation thread are arranged in a corresponding manner, the opening end of the sleeve barrel 5 is sleeved on the extension section of the shell 19, and the sleeve barrel 5 and the shell 19 are disassembled and connected by the internal installation thread and the external installation thread. Other components and connection methods are the same as those of the fourth embodiment.

[0029] Specific implementation method six: Combination Figures 1 to 4 This embodiment is described. The difference between this embodiment and the specific embodiment 5 is that a limited blind hole is processed at the center of the end of the extension section near one end of the barrel 5, the limited blind hole is arranged in cooperation with the striker holder 6, and the extension section is sleeved on the striker holder 6 through the limited blind hole. The other components and connection methods are the same as those of the specific embodiment 5.

[0030] With such arrangement, the striker retainer 6 can be axially limited by the limiting blind hole, thereby preventing the striker retainer 6 from axially moving during operation, thereby affecting the rapid ejection and stable rebound of the striker.

[0031] Specific implementation method seven: Combination Figures 1 to 4This embodiment is described. The difference between this embodiment and the specific embodiment 6 is that a plurality of rear threaded holes are processed on the rear end of the housing 19, a plurality of No. 1 mounting through holes are processed on the rear end cover 8, and a plurality of No. 2 mounting through holes are processed on the rear pressure cover 7, and each rear threaded hole is coaxially arranged with a No. 1 mounting through hole and a No. 2 mounting through hole, and a mounting bolt is inserted into each rear threaded hole and a No. 1 mounting through hole and a No. 2 mounting through hole, and the rear pressure cover 7 and the rear end cover 8 are detachably connected to the housing 19 by a plurality of mounting bolts. Other components and connection methods are the same as those of the specific embodiment 6.

[0032] The present invention has been disclosed as above with preferred implementation cases, but it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0033] How it works

[0034] When the chicken embryo puncher provided by the present application is in operation, the various components are first assembled together according to the connection methods provided in Specific Embodiments 1 to 7:

[0035] First, the state before pressing the trigger:

[0036] 11. The puncher provided in the present application is connected to a compressed air pipe, and the compressed air enters the impact air storage cavity 25;

[0037] 12. Under the action of the compressed air in the valve body, the valve needle seal ring 23 presses the No. 2 air outlet on the upper end of the valve core to seal the valve body, and the compressed air in the impact air storage cavity 25 passes through the No. 1 air outlet on the valve core and enters the front cavity of the rear end cover 8 along the No. 2 rear end air inlet 34 and the No. 1 rear end air inlet 17 in sequence, exerting pressure on the rear end piston 10 toward the striker piston 29;

[0038] 13. The pressure borne by the rear end piston 10 is the combined pressure of the compressed air in the rear end cylinder cavity and the compression spring 16, which is greater than the pressure of the compressed air in the impact air storage cavity 25, so that the rear end piston buffer seal 11 presses the port of the striker cylinder barrel 27, and the compressed air in the impact air storage cavity 25 cannot enter the striker cylinder barrel 27, and the striker piston 29 remains stationary.

[0039] Second, the action after pressing the trigger:

[0040] 21. Press the trigger 20, the valve needle 21 moves downward, and the needle tip of the valve needle 21 seals the valve body air inlet hole 24 in the valve body;

[0041] 22. When the valve needle 21 moves downward, the valve needle sealing ring 23 separates from the No. 2 air outlet on the upper end face of the valve core, opening the passage to the atmosphere. The air in the front cavity of the rear end cover 8 is instantly released to the atmosphere, so that the rear end cylinder cavity is connected to the atmosphere.

[0042] 23. At the same time, the compressed air in the air storage chamber 25 pushes the rear piston 10 out of the striker cylinder 27, and the compressed air instantly enters the striker cylinder 27, pushing the striker piston 29 to move quickly, driving the striker 30 to quickly pop out the needle;

[0043] 24. The compressed air pushes the rear piston 10 at the same time. After the end surface of the rear air hole of the rear piston 10 presses the rear cover buffer seal 9, the air flow is blocked and a closed space is formed inside. The compressed air pushes the striker piston 29 to press against the buffer seal at the front end of the striker cylinder 27 to keep it motionless.

[0044] 25. The compressed air enters the rebound air storage cavity 31 through the three impact cylinder exhaust holes 33 on the front end of the striker cylinder barrel 27 until the pressure in each connecting cavity is the same as the air source pressure.

[0045] Third, the action after pulling the trigger

[0046] 31. Release the trigger 20, the valve 21 pops up under the action of the return spring 22, the compressed air enters the valve from the valve body air inlet 24, and the valve needle seal 23 presses the valve body exhaust port to block exhaust;

[0047] 32. The compressed air enters the rear piston cavity, pushing the rear piston 10 to press the striker cylinder 27. At the same time, the rear exhaust port opens, and the compressed air pressing the striker piston 29 is connected to the atmosphere to relieve the pressure;

[0048] 33. The compressed air in the striker piston rebound air storage chamber 31 instantly enters the striker cylinder 27 from the striker piston rebound air inlet hole 32, pushing the striker piston 29 to reset, thereby realizing the action of retracting the striker 30.

Claims

1. A chicken embryo puncher for inoculation in a biosafety laboratory, characterized in that: The chicken embryo puncher comprises a front end striker support unit (1), a striker unit (2) and a rear end cylinder support unit (3); the front end striker support unit (1) is sleeved on the front end of the striker unit (2), and the front end striker support unit (1) and the striker unit (2) are detachably connected; the punching part of the striker unit (2) is inserted into the front end striker support unit (1), and a gap is provided between the punching part of the striker unit (2) and the front end striker support unit (1); the rear end cylinder support unit (3) is inserted into the rear end of the striker unit (2), and the rear end cylinder support unit (3) and the striker unit (2) are detachably connected; the interior of the striker unit (2) is connected to the interior of the rear end cylinder support unit (3).

2. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 1, characterized in that: The front end striker support unit (1) comprises a buffer rubber pad (4), a sleeve barrel (5) and a striker holder (6); the buffer rubber pad (4) is sleeved on the closed end of the sleeve barrel (5), and the buffer rubber pad (4) and the sleeve barrel (5) are detachably connected; the striker holder (6) is inserted in the sleeve barrel (5), and the striker holder (6) and the sleeve barrel (5) are detachably connected; a No. 1 striker through hole (61) is provided at the center of the striker holder (6); a No. 2 striker through hole (51) is processed at the center of the closed end of the sleeve barrel (5); a No. 3 striker through hole (41) is processed at the center of the buffer rubber pad (4), and the axis of the No. 1 striker through hole (61), the axis of the No. 2 striker through hole (51) and the axis of the No. 3 striker through hole (41) are arranged in a colinear manner; the open end of the sleeve barrel (5) is sleeved on the front end of the striker unit, and the sleeve barrel (5) and the striker unit are detachably connected.

3. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 2, characterized in that: The rear end cylinder support unit (3) comprises a rear pressure cover (7), a rear end cover (8), a rear cover buffer seal (9), a rear end piston (10), a rear end piston buffer seal (11), a buffer (13), a rear end piston seal ring (14), a rear end inner hole seal ring (15), a clamping spring (16) and a gasket (18); the rear end cover (8) is inserted at the rear end of the striker unit (2), and the rear end cover (8) and the striker unit (2) are detachably connected; the rear pressure cover (7) is arranged at one end of the rear end cover (8) away from the striker unit (2), and a gasket (18) is arranged between the rear pressure cover (7) and the rear end cover (8); the rear pressure cover (7) and the rear end cover (8) is disassembled and connected by bolts, the rear end piston (10) is inserted into the rear end cover (8), and the rear end piston (10) and the rear end cover (8) are arranged with a clearance fit, the rear end of the rear end piston (10) passes through the inner hole on the rear end cover (8) and is arranged in the cavity between the rear pressure cover (7) and the rear end cover (8), the rear end of the rear end piston (10) is sealed with the inner hole of the rear end cover (8) through the rear end inner hole sealing ring (15), the head end of the rear end piston (10) is arranged in the front cavity of the rear end cover (8), and the head end of the rear end piston (10) is sealed with the inner wall of the front cavity of the rear end cover (8) through the rear end piston sealing ring (14), and the head end of the rear end piston (10) is sealed with the inner wall of the front cavity of the rear end cover (8). An annular groove is processed on the end surface, a rear piston buffer seal (11) is embedded in the annular groove at the front end of the rear piston (10), a rear piston exhaust hole (12) is processed at the center of the front end of the rear piston (10), and the axis of the rear piston exhaust hole (12) is arranged in a collinear manner with the axis of the rear piston (10), a spring receiving hole is processed at the center of the rear end of the rear piston (10), and the spring receiving hole is connected to the piston exhaust hole (12), the axis of the piston exhaust hole (12) is arranged in a collinear manner with the axis of the spring receiving hole, and the aperture of the spring receiving hole is larger than the aperture of the piston exhaust hole (12), and the spring receiving hole is close to the piston exhaust hole (12). A buffer pad (13) is provided in one end, and the buffer pad (13) is axially limited by a step formed between the spring receiving hole and the piston exhaust hole (12); a compression spring (16) is arranged in the spring receiving hole, and one end of the compression spring (16) is fixedly connected to the buffer pad (13); the other end of the compression spring (16) extends into a cavity between the rear pressure cover (7) and the rear end cover (8), and the other end of the compression spring (16) is detachably connected to the rear pressure cover (7); a rear end air inlet hole (17) is processed on the inner wall of the front cavity in the rear end cover (8), and the front cavity in the rear end cover (8) is connected to the striker unit (2) through the rear end air inlet hole (17).

4. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 3, characterized in that: The striker unit (2) comprises a housing (19), a trigger (20), a valve needle (21), a return spring (22), a valve needle sealing ring (23), a valve body air inlet hole (24), a striker air storage chamber (25), a striker cylinder sealing ring (26), a striker cylinder barrel (27), a striker piston sealing ring (28), a striker piston (29), a striker (30) and a rebound air storage chamber (31); the housing (19) is arranged between the barrel (5) and the rear end cover (8), and the front end of the housing (19) is detachably connected to the open end of the barrel (5), and the front end of the housing (19) is detachably connected to the front end of the rear end cover (8); the trigger (20) is arranged on the top of the housing (19), and one end of the trigger (20) is connected to the housing (19). The trigger (20) is hingedly arranged, and an air valve is arranged below the trigger (20). The air valve is inserted into the valve body installation cavity on the housing (19). A second rear air inlet hole (34) is processed on one side of the valve body installation cavity, and the second rear air inlet hole (34) is arranged corresponding to the first rear air inlet hole (17). A valve body air inlet hole (24) is processed at the bottom of the valve body installation cavity, and the valve body installation cavity is connected to the impact air storage cavity (25) in the housing (19) through the valve body air inlet hole (24). The air inlet hole of the air valve is coaxially arranged with the valve body air inlet hole (24), and the first air outlet hole of the air valve is coaxially arranged with the second rear air inlet hole (34). The second air outlet hole of the air valve is located at the top of the valve body and is connected to the external atmosphere. A A valve needle (21), the top end of the valve needle (21) extends out of the top of the valve body and is inserted into the bottom of the trigger (20), and a return spring (22) is sleeved on the outer circumferential surface of the top end of the valve needle (21), one end of the return spring (22) is fixedly connected to the top of the valve body, and the other end of the return spring (22) is fixedly connected to the bottom of the trigger (20), the bottom end of the valve needle (21) is arranged in the valve body, and the bottom end of the valve needle (21) is coaxially arranged with the air inlet of the valve body, a valve needle sealing ring (23) is arranged between the bottom end of the valve needle (21) and the inner top wall of the valve body, and the bottom end of the valve needle (21) is sealed with the second air outlet in the air outlet valve through the valve needle sealing ring (23), and a striker cylinder barrel (27) is inserted in the housing (19), and the striker cylinder The cylinder (27) is sealed with the outer shell (19) through the impact cylinder sealing ring (26); the tail end of the striker cylinder barrel (27) is arranged in the impact air storage cavity (25) in the outer shell (19); the head end of the striker cylinder barrel (27) is arranged in the rebound air storage cavity (31) in the outer shell (19); a plurality of striker cylinder exhaust holes (33) are processed equidistantly along the circumferential direction on the head end of the striker cylinder barrel (27); and the plurality of striker cylinder exhaust holes (33) are arranged close to one end of the rebound air storage cavity (31) away from the front striker support unit (1); the exhaust end of each striker cylinder exhaust hole (33) is connected to the rebound air storage cavity (31); the intake end of each striker cylinder exhaust hole (33) is connected to the striker cylinder barrel (27);A plurality of impact piston rebound air inlet holes (32) are processed equidistantly along the circumference of the head end of the striker cylinder barrel (27), and the plurality of impact piston rebound air inlet holes (32) are arranged near the rebound air storage cavity (31) and near one end of the front striker support unit (1), the exhaust end of each impact piston rebound air inlet hole (32) is connected to the rebound air storage cavity (31), the intake end of each impact piston rebound air inlet hole (32) is connected to the striker cylinder barrel (27), a striker piston (29) is arranged in the striker cylinder barrel (27), the striker piston (29) is sealed with the striker cylinder barrel (27) through a striker piston sealing ring (28), the installation end of the striker (30) is inserted on the striker piston (29), and the punching end of the striker (30) passes through the striker cylinder barrel (27) and The shell (19) extends to the No. 1 striker through hole (61) in the striker retainer (6), and the striker (30) is clearance-matched with the No. 1 striker through hole (61), the No. 2 striker through hole (51) and the No. 3 striker through hole (41). The rear end of the shell (19) is processed with a rear end connecting cavity, and the striker gas storage cavity (25) is connected to the rear end connecting cavity. The shell (19) is sleeved on the rear end cover (8) through the rear end connecting cavity, and the rear end face of the striker cylinder barrel (27) is corresponding to the rear end piston buffer seal (11) in the rear end cylinder support unit (3). The tail of the striker piston (29) is provided with an extension plug, and the extension plug at the tail of the striker piston (29) is coaxially corresponding to the piston exhaust hole (12) in the rear end cylinder support unit (3).

5. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 4, characterized in that: An internal mounting thread is processed on the inner wall of the opening end of the sleeve barrel (5), an extension section is provided on the front end of the outer shell (19), an external mounting thread is processed on the outer circumferential surface of the extension section, and the internal mounting thread and the external mounting thread are arranged in a corresponding manner, the opening end of the sleeve barrel (5) is sleeved on the extension section of the outer shell (19), and the sleeve barrel (5) and the outer shell (19) are disassembled and connected by the internal mounting thread and the external mounting thread.

6. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 5, characterized in that: A limiting blind hole is processed at the center of the end of the extension section close to one end of the sleeve barrel (5), the limiting blind hole is arranged in coordination with the striker retainer (6), and the extension section is sleeved on the striker retainer (6) through the limiting blind hole.

7. A chicken embryo puncher for inoculation in a biosafety laboratory according to claim 6, characterized in that: The rear end of the shell (19) is processed with a plurality of rear end threaded holes, the rear end cover (8) is processed with a plurality of No. 1 mounting through holes, and the rear pressure cover (7) is processed with a plurality of No. 2 mounting through holes, and each rear end threaded hole is coaxially arranged with a No. 1 mounting through hole and a No. 2 mounting through hole, and each rear end threaded hole and a No. 1 mounting through hole and a No. 2 mounting through hole are inserted with a mounting bolt, and the rear pressure cover (7) and the rear end cover (8) are detachably connected to the shell (19) via the plurality of mounting bolts.

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