CN219785218U - Quick-dismantling piezoelectric ceramic valve convenient for adjusting firing pin pressure - Google Patents
Quick-dismantling piezoelectric ceramic valve convenient for adjusting firing pin pressure Download PDFInfo
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- CN219785218U CN219785218U CN202321089421.7U CN202321089421U CN219785218U CN 219785218 U CN219785218 U CN 219785218U CN 202321089421 U CN202321089421 U CN 202321089421U CN 219785218 U CN219785218 U CN 219785218U
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Abstract
The utility model provides a quick-release piezoceramic valve convenient for adjusting the pressure of a firing pin, which comprises the following components: the valve body is in a cuboid shape; the piezoelectric ceramic is arranged in the valve body and extends along the length direction of the valve body; the pressing arm is rotatably arranged in the valve body; one end of the firing pin is positioned in the valve body, and the other end of the firing pin extends out of the valve body; the flow channel module is arranged at one end of the valve body, from which the firing pin extends, and the nozzle is arranged at one side of the flow channel module, which is away from the valve body, and the firing pin penetrates through the flow channel module and extends into the nozzle; the flow channel module is arranged on the valve body through the pressure adjusting module, and the pressure adjusting module can drive the flow channel module to move back and forth along the length direction of the valve body.
Description
Technical Field
The utility model belongs to the field of piezoelectric ceramic valves, and particularly relates to a quick-dismantling piezoelectric ceramic valve convenient for adjusting the pressure of a firing pin.
Background
I have filed 22 at 2022 and 8 a patent entitled piezoelectric injection valve (application number 202222202974.0) in which the tightening degree of the nozzle sleeve is required to be adjusted in order to adjust the impact force of the striker on the nozzle sleeve, and the adjusting manner can be used for adjusting the impact force of the striker, but on one hand, the tightening degree of the nozzle sleeve is not adjusted, so that the nozzle sleeve is not tightened in the using process, and the nozzle sleeve is loosened automatically due to vibration and the like; on the other hand, the nozzle housing is small in size, and it is difficult to ensure accuracy in operation. In addition, the runner module in the patent is fixed on the valve body through a screw, and the assembly and disassembly are relatively inconvenient when the structure such as the nozzle needs to be replaced or maintained.
Disclosure of Invention
The utility model mainly aims to provide a quick-release piezoelectric ceramic valve which is convenient for adjusting the pressure of a firing pin, and the pressure of the firing pin is convenient to adjust by arranging a pressure adjusting module; and a quick-dismantling mechanism is arranged, so that the runner module can be conveniently and quickly dismantled.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a quick release piezoceramic valve for facilitating adjustment of striker pressure, comprising:
the valve body is in a cuboid shape;
the piezoelectric ceramic is arranged in the valve body and extends along the length direction of the valve body;
the pressing arm is rotatably arranged in the valve body, the rotation axis of the pressing arm is parallel to the thickness direction of the valve body, and one end of the piezoelectric ceramic is abutted against the pressing arm;
a firing pin, one end of which is positioned in the valve body, the other end of which extends out of the valve body, the axis of the firing pin is parallel to the length direction of the valve body, and one end of the firing pin positioned in the valve body is abutted against the free end of the pressing arm;
the flow channel module is arranged at one end of the valve body, from which the firing pin extends, and the nozzle is arranged at one side of the flow channel module, which is away from the valve body, and the firing pin penetrates through the flow channel module and extends into the nozzle; it is characterized in that the method comprises the steps of,
the flow channel module is arranged on the valve body through the pressure adjusting module, and the pressure adjusting module can drive the flow channel module to move back and forth along the length direction of the valve body.
Preferably, the pressure regulating module comprises:
the adjusting seat is positioned between the valve body and the runner module, a through hole is formed in the adjusting seat, the axis of the through hole is collinear with the axis of the firing pin, and the runner module is arranged on the adjusting seat;
the first connecting cylinder is arranged on the adjusting seat, and the axis of the first connecting cylinder is collinear with the axis of the through hole;
the lower end of the second connecting cylinder is fixed at the upper end of the first connecting cylinder, the first connecting cylinder and the second connecting cylinder are coaxially arranged, the first connecting cylinder and the second connecting cylinder are inserted into the valve body, and the adjusting seat, the first connecting cylinder and the second connecting cylinder are integrally formed;
and one end of the adjusting screw is inserted into the valve body from the side of the valve body opposite to the adjusting seat and is in threaded connection with the second connecting cylinder, and the other end of the adjusting screw is provided with an operating part which can be abutted against the valve body.
Preferably, the flow channel module further comprises a guide cylinder, one end of the guide cylinder is inserted into the through hole and the first connecting cylinder, the flow channel module comprises a shell, the shell is arranged on the adjusting seat through a quick-dismantling mechanism, and the other end of the guide cylinder is inserted into the shell; the striker can be inserted into the guide cylinder, the striker can move up and down relative to the guide cylinder, the striker is sleeved with a first spring, the upper end of the first spring abuts against the upper end of the striker, the lower end of the first spring abuts against the guide cylinder, and the first spring is always in a compressed state so that the striker can always abut against the pressing arm.
Preferably, the second connecting cylinder is provided with a bar-shaped groove, the bar-shaped groove extends up and down and penetrates through the second connecting cylinder in the width direction of the valve body, and the free end of the pressing arm can be inserted into the second connecting cylinder through the bar-shaped groove.
Preferably, the pressure regulating module further comprises a third connecting cylinder, the lower end of the third connecting cylinder is inserted into the first connecting cylinder and the third connecting cylinder is slidable relative to the first connecting cylinder, and the upper end of the third connecting cylinder is provided with a first outer flange which can extend from a corresponding strip-shaped groove of the second connecting cylinder; the first spring is sleeved with a second spring, one end of the second spring is propped against the pressing arm, the other end of the second spring is propped against the third connecting cylinder, and the second spring is always in a compressed state, so that the pressing arm can automatically reset.
Preferably, the layering adjusting module further comprises two groups of limiting columns, each group of limiting columns is provided with two limiting columns, the two groups of limiting columns are arranged up and down, the axes of all the limiting columns are parallel to the thickness direction of the valve body, the two limiting columns in each group are respectively positioned at two sides of the second connecting cylinder, one end, far away from the first connecting cylinder, of the second connecting cylinder is provided with a second outer flange, the upper group of limiting columns is at least partially positioned under the second outer flange, and the lower group of limiting columns is at least partially positioned over the first connecting cylinder; the lower surface of the first outer flange is abutted against a limiting post positioned below.
Preferably, a third spring is arranged between the adjusting seat and the valve body, one end of the third spring is abutted against the adjusting seat, the other end of the third spring is abutted against the valve body, and the third spring is always in a compressed state; and/or the number of the groups of groups,
one of the valve body or the adjusting seat is provided with a guide post, the other of the valve body or the adjusting seat is provided with a guide hole, and the guide post is slidably arranged in the guide hole.
Preferably, the quick-release mechanism comprises a first U-shaped groove arranged on the upper surface of the shell and a second U-shaped groove arranged on the lower surface of the adjusting seat, the U-shaped opening of the first U-shaped groove and the U-shaped opening of the second U-shaped groove are horizontally arranged oppositely, one part of the adjusting seat can be clamped into the first U-shaped groove, and one part of the shell can be clamped into the second U-shaped groove.
Preferably, a limiting block is arranged on the upper surface of the shell at one end opposite to the first U-shaped groove, and inclined planes are arranged on the upper surface of the limiting block and on two sides of the limiting block along the thickness direction of the valve body; the regulating seat is provided with a positioning column capable of moving up and down, the upper end of the positioning column is provided with a fourth spring, the upper end of the fourth spring is propped against the lower end face of the valve body, and the lower end of the fourth spring is propped against the positioning column.
Preferably, the quick-release mechanism further comprises a handle arranged on the adjusting seat, the handle is located on the side, opposite to the limiting block, of the positioning column, one end of the handle is rotatably arranged on the adjusting seat, and the other end of the handle swings up and down to move onto the moving path of the shell or move away from the moving path of the shell.
Compared with the prior art, the utility model has the following beneficial effects:
1) The utility model has the pressure regulating mechanism, the pressure regulating mechanism regulates the acting force between the firing pin and the nozzle by regulating the relative position of the whole flow channel module relative to the firing pin, and regulates by the regulating screw arranged on the valve body, compared with the direct regulating nozzle, on the one hand, the utility model has convenient operation, on the other hand, due to the adoption of the third spring, certain friction force is always provided between the regulating screw and the valve body, and the regulating screw can not loosen by itself;
2) The runner module is arranged on the valve body through the quick-dismantling mechanism, and can be conveniently dismantled and conveniently arranged when the runner module, the nozzle and the firing pin are required to be dismantled or maintained.
Drawings
FIGS. 1 and 2 are block diagrams of the present utility model;
FIGS. 3 and 4 are block diagrams of pressure adjustment modules;
fig. 5 is a structural view of the flow channel module.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 1-5, a quick-release piezoceramic valve convenient for adjusting the pressure of a firing pin comprises a valve body 1, a piezoceramic 3 arranged in the valve body 1, a pressing arm 5 arranged in the valve body 1 and the firing pin 9, wherein one end of the pressing arm 5 is arranged in the valve body 1 in a swinging manner through a rotating shaft 51, the upper end of the firing pin 9 abuts against the lower surface of the pressing arm 5, the lower end of the piezoceramic 3 abuts against the upper surface of the pressing arm 5, and the pressing arm 5 can be driven to swing around the rotating shaft 51 by controlling the expansion and contraction of the piezoceramic 3, so that the firing pin 9 is driven to move up and down. The valve body 1 is of a cuboid structure.
The ceramic valve further comprises a pressure adjusting module 2, a flow channel module 6 and a nozzle 7, wherein the flow channel module 6 is detachably arranged on the pressure adjusting module 2, the nozzle 7 is detachably arranged on one side of the flow channel module 6, which is away from the pressure adjusting module 2, the lower end of the nozzle 7 is provided with a spray hole, the lower end of a firing pin 9 is inserted into the nozzle 7, the firing pin 9 moves up and down and can strike the side wall of the nozzle 7, which corresponds to the spray hole, and glue solution is extruded and sprayed out during striking. The pressure adjusting module 2 drives the nozzle 7 to move up and down so as to adjust the relative position of the lower end of the firing pin 9 and the lower end of the nozzle 7, and then the impact force can be adjusted. In particular, the nozzle 7 is screwed to the flow channel module 6.
The pressure regulating module 2 comprises a regulating seat 23, a first connecting cylinder 21 and a second connecting cylinder 22 which are arranged on the regulating seat 23, wherein the lower end of the second connecting cylinder 22 is fixed at the upper end of the first connecting cylinder 21, the first connecting cylinder 21 and the second connecting cylinder 22 are coaxially arranged, the regulating seat 23 is positioned at the bottom of the valve body 1 when being installed, the first connecting cylinder 21 and the second connecting cylinder 22 are inserted into the valve body 1, and the first connecting cylinder 21 and the second connecting cylinder 22 are coaxially arranged with the firing pin 9. The adjusting seat 23, the first connecting cylinder 21 and the second connecting cylinder 22 are integrally formed, and can move up and down relative to the valve body 1. The nozzle 7 is detachably arranged on the side of the adjusting seat 23 facing away from the valve body 1.
The pressure regulating module 2 further comprises a regulating screw 26, the lower end of the regulating screw 26 is located in the valve body 1, the upper end of the regulating screw 26 is provided with an operation part, the operation part is propped against the upper end face of the valve body 1, the lower end of the regulating screw 26 is in threaded connection with the upper end of the second connecting cylinder 22, the position of the regulating seat 23 relative to the valve body 1 can be regulated by rotating the regulating screw 26, and then the relative position of the nozzle 7 relative to the firing pin 9 is regulated.
A through hole 24 is provided in the adjustment seat 23, and the through hole 24 is provided coaxially with the first connecting cylinder 21. The ceramic valve further comprises a guide cylinder 24, the upper end of the guide cylinder 24 is inserted into the through hole 24 and the first connecting cylinder 21, the runner module 6 comprises a shell 61, the shell 61 is arranged on the adjusting seat 23 through the quick-dismantling mechanism 8, and the lower end of the guide cylinder 24 is inserted into the shell 61. A flow passage (not shown) is provided in the housing 61, which is substantially the same as the flow passage in the patent mentioned in the background art, although other flow passage structures in the prior art may be used.
The striker 9 can be inserted into the guide cylinder 24, and the striker 9 can move up and down relative to the guide cylinder 24, and a first spring 91 is sleeved on the striker 9, and the upper end of the first spring 91 abuts against the upper end of the striker 9, and the lower end abuts against the guide cylinder 24. The second connecting cylinder 22 is provided with a bar-shaped groove 221, the bar-shaped groove 221 extends up and down and penetrates the second connecting cylinder 22 in the extending direction of the pressing arm 5, one end of the pressing arm 5 far away from the rotating shaft 51 can be inserted into the second connecting cylinder 22 through the bar-shaped groove 221 on one side, the upper end face of the firing pin 9 can be abutted against the lower surface of the pressing arm 5, and the first spring 91 is always in a compressed state, so that the firing pin 9 is always abutted against the pressing arm 5. Since the pressing arm 5 does not move up and down along with the second connecting cylinder 22, the striker 9 does not move up and down when the nozzle 7 is moved up and down by the regulating seat 23, and since the movement range of the striker 9 does not change, the force with which the striker 9 collides with the nozzle 7 changes.
The pressure regulating module 2 further comprises a third connecting cylinder 28, the lower end of the third connecting cylinder 28 being inserted into the first connecting cylinder 21 and the third connecting cylinder 28 being slidable relative to the first connecting cylinder 21, the upper end of the third connecting cylinder 28 being provided with a first outer flange which is able to protrude from a corresponding strip-shaped groove 221 of the second connecting cylinder 22.
The batten adjusting module 2 further comprises two groups of limiting posts 25 for limiting the distance of the nozzle 7 moving up and down. Each set of limiting columns 25 is provided with two limiting columns 25, the two limiting columns 25 are arranged up and down, the axes of all the limiting columns 25 are perpendicular to the axis of the second connecting cylinder 22, the two limiting columns 25 in each set are respectively located at two sides of the second connecting cylinder 22, a second outer flange is arranged at the upper end of the second connecting cylinder 22, the upper set of limiting columns 25 are at least partially located under the second outer flange, and when the second connecting cylinder 22 moves downwards to a certain distance, the second outer flange can be abutted against the upper set of limiting columns 25 to further prevent the second connecting cylinder 22 from continuing to move downwards. The lower limit post 25 is at least partially located right above the first connecting cylinder 21, and when the first connecting cylinder 21 moves upward a certain distance, the upper end of the first connecting cylinder 21 will abut against the lower limit post 25. The lower surface of the first outer flange rests against the underlying stopper post 25.
The first spring 91 is sleeved with a second spring 92, the upper end of the second spring 92 abuts against the lower surface of the pressing arm 5, the lower end of the second spring 92 abuts against the lower end of the third connecting cylinder 28, and the second spring 92 is always in a compressed state, so that the pressing arm 5 can automatically reset.
Further, a third spring 27 is disposed between the adjusting seat 23 and the valve body 1, one end of the third spring 27 abuts against the adjusting seat 23, the other end abuts against the valve body 1, and the third spring 27 is always in a compressed state, so that the nozzle 7 can be prevented from shaking. Preferably, a guide post 82 is provided on one of the valve body 1 or the adjustment seat 23, and a guide hole 81 is provided on the other of the valve body 1 or the adjustment seat 23, and the guide post 82 is slidably provided in the guide hole 81 to serve as a guide. The first connecting tube 21 can also serve as a guide when inserted into the valve body 1.
The quick release mechanism 8 comprises a first U-shaped groove 611 formed in the upper surface of the housing 61 and a second U-shaped groove 231 formed in the lower surface of the adjusting seat 23, wherein the U-shaped opening of the first U-shaped groove 611 and the U-shaped opening of the second U-shaped groove 231 are horizontally arranged opposite to each other, a part of the adjusting seat 23 can be clamped into the first U-shaped groove 611, and a part of the housing 61 can be clamped into the second U-shaped groove 231 to further realize mutual clamping. In the mounting, the guide cylinder 24, the striker 9, and other structures to be mounted are mounted to the housing 61, the upper ends of the guide cylinder 24 and the striker 9 are inserted together into the first and second connecting cylinders 21 and 22, and finally the housing 61 is rotated to be in place about the axis of the guide cylinder 24.
Preferably, a stopper 232 is provided at an end of the upper surface of the housing 61 opposite to the first U-shaped groove 611, and inclined surfaces are provided at both sides of the upper surface of the stopper 232 in the thickness direction of the valve body 1. The adjusting seat 23 is provided with a positioning column 233 capable of moving up and down, the upper end of the positioning column 233 is provided with a fourth spring 83, the upper end of the fourth spring 83 is propped against the lower end face of the valve body 1, the lower end of the fourth spring 83 is propped against the positioning column 233, and when the shell 61 rotates under the action of external force, the lower end of the positioning column 233 can move up and down under the action of an inclined plane and stride over the limiting block 232. Further, the quick release mechanism 8 further includes a handle 81 disposed on the adjusting seat 23, the handle 81 is located on a side of the positioning post 233 opposite to the stopper 232, one end of the handle 81 is rotatably disposed on the adjusting seat 23, and the other end of the handle 81 swings up and down to be able to move onto the moving path of the housing 61 or move away from the moving path of the housing 61.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A quick release piezoceramic valve for facilitating adjustment of striker pressure, comprising:
the valve body is in a cuboid shape;
the piezoelectric ceramic is arranged in the valve body and extends along the length direction of the valve body;
the pressing arm is rotatably arranged in the valve body, the rotation axis of the pressing arm is parallel to the thickness direction of the valve body, and one end of the piezoelectric ceramic is abutted against the pressing arm;
a firing pin, one end of which is positioned in the valve body, the other end of which extends out of the valve body, the axis of the firing pin is parallel to the length direction of the valve body, and one end of the firing pin positioned in the valve body is abutted against the free end of the pressing arm;
the flow channel module is arranged at one end of the valve body, from which the firing pin extends, and the nozzle is arranged at one side of the flow channel module, which is away from the valve body, and the firing pin penetrates through the flow channel module and extends into the nozzle; it is characterized in that the method comprises the steps of,
the flow channel module is arranged on the valve body through the pressure adjusting module, and the pressure adjusting module can drive the flow channel module to move back and forth along the length direction of the valve body.
2. The quick release piezoceramic valve of claim 1, wherein the pressure adjustment module comprises:
the adjusting seat is positioned between the valve body and the runner module, a through hole is formed in the adjusting seat, the axis of the through hole is collinear with the axis of the firing pin, and the runner module is arranged on the adjusting seat;
the first connecting cylinder is arranged on the adjusting seat, and the axis of the first connecting cylinder is collinear with the axis of the through hole;
the lower end of the second connecting cylinder is fixed at the upper end of the first connecting cylinder, the first connecting cylinder and the second connecting cylinder are coaxially arranged, the first connecting cylinder and the second connecting cylinder are inserted into the valve body, and the adjusting seat, the first connecting cylinder and the second connecting cylinder are integrally formed;
and one end of the adjusting screw is inserted into the valve body from the side of the valve body opposite to the adjusting seat and is in threaded connection with the second connecting cylinder, and the other end of the adjusting screw is provided with an operating part which can be abutted against the valve body.
3. The quick release piezoceramic valve for facilitating adjustment of a striker pressure according to claim 2, further comprising a guide cylinder, one end of the guide cylinder being inserted into the through hole and the first connecting cylinder, the flow path module comprising a housing provided on the adjustment seat by a quick release mechanism, the other end of the guide cylinder being inserted into the housing; the striker can be inserted into the guide cylinder, the striker can move up and down relative to the guide cylinder, the striker is sleeved with a first spring, the upper end of the first spring abuts against the upper end of the striker, the lower end of the first spring abuts against the guide cylinder, and the first spring is always in a compressed state so that the striker can always abut against the pressing arm.
4. A quick release piezoceramic valve for facilitating the adjustment of the striker pressure according to claim 3, wherein the second connecting cylinder is provided with a bar-shaped groove which extends up and down and penetrates the second connecting cylinder in the width direction of the valve body, and the free end of the pressing arm can be inserted into the second connecting cylinder through the bar-shaped groove.
5. The quick release piezoceramic valve for facilitating adjustment of the striker pressure according to claim 4, wherein the pressure adjustment module further comprises a third connecting cylinder, the lower end of the third connecting cylinder being inserted into the first connecting cylinder and the third connecting cylinder being slidable relative to the first connecting cylinder, the upper end of the third connecting cylinder being provided with a first outer flange that is capable of protruding from a corresponding strip-shaped groove of the second connecting cylinder; the first spring is sleeved with a second spring, one end of the second spring is propped against the pressing arm, the other end of the second spring is propped against the third connecting cylinder, and the second spring is always in a compressed state, so that the pressing arm can automatically reset.
6. The quick release piezoceramic valve for facilitating the adjustment of the striker pressure according to claim 5, wherein the pressure adjustment module further comprises two sets of limiting posts, each set of limiting posts has two, the two sets of limiting posts are arranged up and down, the axes of all the limiting posts are parallel to the thickness direction of the valve body, the two limiting posts in each set are respectively positioned at two sides of the second connecting cylinder, one end of the second connecting cylinder, which is far away from the first connecting cylinder, is provided with a second outer flange, the upper set of limiting posts is at least partially positioned under the second outer flange, and the lower set of limiting posts is at least partially positioned over the first connecting cylinder; the lower surface of the first outer flange is abutted against a limiting post positioned below.
7. The quick release piezoceramic valve for facilitating the adjustment of the striker pressure according to claim 6, wherein a third spring is provided between the adjustment seat and the valve body, one end of the third spring being abutted against the adjustment seat, the other end being abutted against the valve body, the third spring being always in a compressed state; and/or the number of the groups of groups,
one of the valve body or the adjusting seat is provided with a guide post, the other of the valve body or the adjusting seat is provided with a guide hole, and the guide post is slidably arranged in the guide hole.
8. The quick release piezoceramic valve for facilitating the adjustment of the striker pressure according to claim 7, wherein the quick release mechanism comprises a first U-shaped groove arranged on the upper surface of the housing and a second U-shaped groove arranged on the lower surface of the adjustment seat, the U-shaped opening of the first U-shaped groove and the U-shaped opening of the second U-shaped groove are horizontally arranged in opposition, a part of the adjustment seat can be clamped into the first U-shaped groove, and a part of the housing can be clamped into the second U-shaped groove.
9. The quick release piezoceramic valve for facilitating adjustment of the striker pressure according to claim 8, wherein a stopper is provided on an upper surface of the housing at an end opposite to the first U-shaped groove, and inclined surfaces are provided on both sides of the upper surface of the stopper in a thickness direction of the valve body; the regulating seat is provided with a positioning column capable of moving up and down, the upper end of the positioning column is provided with a fourth spring, the upper end of the fourth spring is propped against the lower end face of the valve body, and the lower end of the fourth spring is propped against the positioning column.
10. The quick release piezoceramic valve of claim 9, wherein the quick release mechanism further comprises a handle disposed on the adjustment seat, the handle being located on an opposite side of the positioning post from the stopper, one end of the handle being rotatably disposed on the adjustment seat, and the other end of the handle being swingable up and down to be movable to and from the movement path of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089421.7U CN219785218U (en) | 2023-05-09 | 2023-05-09 | Quick-dismantling piezoelectric ceramic valve convenient for adjusting firing pin pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089421.7U CN219785218U (en) | 2023-05-09 | 2023-05-09 | Quick-dismantling piezoelectric ceramic valve convenient for adjusting firing pin pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219785218U true CN219785218U (en) | 2023-10-03 |
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ID=88184175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321089421.7U Active CN219785218U (en) | 2023-05-09 | 2023-05-09 | Quick-dismantling piezoelectric ceramic valve convenient for adjusting firing pin pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219785218U (en) |
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2023
- 2023-05-09 CN CN202321089421.7U patent/CN219785218U/en active Active
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