CN215878518U - Valve body structure for micro-fluid ejection - Google Patents
Valve body structure for micro-fluid ejection Download PDFInfo
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- CN215878518U CN215878518U CN202122197003.7U CN202122197003U CN215878518U CN 215878518 U CN215878518 U CN 215878518U CN 202122197003 U CN202122197003 U CN 202122197003U CN 215878518 U CN215878518 U CN 215878518U
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- firing pin
- accommodating cavity
- piezoelectric ceramic
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Abstract
The utility model discloses a valve body structure for micro-fluid ejection, comprising: the piezoelectric ceramic block is positioned in the accommodating cavity, one end of the firing pin embedded into the through hole is positioned in the accommodating cavity, the other end of the firing pin is contacted with the capillary tube, an elastic mechanism is arranged between the end part of the end of the firing pin positioned in the accommodating cavity and the through hole, so that one end of the firing pin is contacted with one end of the piezoelectric ceramic block, the left end face of the shell is provided with a screw hole communicated with the accommodating cavity, and one end of a fine tuning bolt is screwed into the screw hole of the shell and contacted with the left end of the piezoelectric ceramic block. The utility model not only facilitates the quick-release maintenance and improves the maintenance efficiency, but also improves the universality and the liquid outlet precision of the injection valve.
Description
Technical Field
The utility model relates to a valve body structure for micro-fluid injection, belonging to the technical field of micro-fluid drop injection devices.
Background
The technical development in the field of fine engineering is very rapid in recent years, the size of precision components becomes smaller and smaller due to the continuous improvement and continuous development of various ultra-precision micromachining technologies, and the micro-droplet injection mechanism based on piezoelectric actuation is widely applied to the fields of material chemical industry, biological medical treatment, micro-electro-mechanical system manufacturing and the like, and mainly realizes the functions of injecting and controlling micro-droplets.
The existing valve body structure is inconvenient to disassemble and poor in universality. It is therefore a problem to be solved by the skilled person in the art how to develop an injection valve body that overcomes the drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a valve body structure for micro-fluid injection, which not only facilitates quick disassembly and maintenance and improves the maintenance efficiency, but also can adjust the size of liquid drops and the liquid outlet frequency, thereby improving the universality and the liquid outlet precision of an injection valve.
In order to achieve the purpose, the utility model adopts the technical scheme that: a valve body structure for micro-fluid ejection, comprising: the piezoelectric ceramic block is positioned in the accommodating cavity, one end of the firing pin embedded in the through hole is positioned in the accommodating cavity, the other end of the firing pin is contacted with the capillary tube, and an elastic mechanism is arranged between the end part of the firing pin positioned at one end in the accommodating cavity and the through hole, so that one end of the firing pin is contacted with one end of the piezoelectric ceramic block;
the left end face of the shell is provided with a screw hole communicated with the accommodating cavity, and one end of a fine tuning bolt is screwed into the screw hole of the shell and is contacted with the left end of the piezoelectric ceramic block.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the elastic mechanism is sleeved on the firing pin.
2. In the above aspect, the end of the striker is a flange portion.
3. In the above scheme, the elastic mechanism is a spring.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the valve body structure for micro-fluid injection is characterized in that the piezoelectric ceramic block is positioned in the accommodating cavity, one end of the firing pin embedded in the through hole is positioned in the accommodating cavity, the other end of the firing pin is contacted with the capillary, and an elastic mechanism is arranged between the end part of the firing pin positioned at one end in the accommodating cavity and the through hole, so that the valve body structure is convenient to disassemble and maintain, improves the maintenance efficiency, enables the impact force at each time to be constant, and ensures the stability and consistency of the liquid outlet effect.
2. The valve body structure for micro-fluid injection is characterized in that the left end face of the shell is provided with a screw hole communicated with the accommodating cavity, and one end of the fine tuning bolt is screwed into the screw hole of the shell and is contacted with the left end of the piezoelectric ceramic block, so that the valve body structure is convenient to disassemble and maintain, the maintenance efficiency is improved, and the size and the liquid outlet frequency of liquid drops can be adjusted, thereby improving the universality and the liquid outlet precision of the injection valve.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a valve body structure for micro-fluid ejection according to the present invention;
fig. 2 is an exploded view of a valve body structure for micro-fluid ejection according to the present invention.
In the above drawings: 1. a housing; 2. a striker; 21. an end portion; 3. a piezoelectric ceramic block; 4. an accommodating cavity; 5. a through hole; 6. an elastic mechanism; 7. a screw hole; 8. and (5) fine-tuning the bolt.
Detailed Description
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
Example 1: a valve body structure for micro-fluid ejection, comprising: the piezoelectric ceramic block is characterized by comprising a shell 1, a firing pin 2 and a piezoelectric ceramic block 3, wherein the shell 1 is internally provided with an accommodating cavity 4 and a through hole 5 which is positioned on the right end surface and communicated with the accommodating cavity 4, the piezoelectric ceramic block 3 is positioned in the accommodating cavity 4, one end of the firing pin 2 embedded in the through hole 5 is positioned in the accommodating cavity 4, the other end of the firing pin 2 is contacted with a capillary, and an elastic mechanism 6 is arranged between an end 21 of the firing pin 2 positioned at one end in the accommodating cavity 4 and the through hole 5, so that one end of the firing pin 2 is contacted with one end of the piezoelectric ceramic block 3;
the left end face of the shell 1 is provided with a screw hole 7 communicated with the accommodating cavity 4, and one end of a fine tuning bolt 8 is screwed into the screw hole 7 of the shell 1 and is contacted with the left end of the piezoelectric ceramic block 3.
The end 21 of the striker 2 is a flange.
The elastic mechanism 6 is a spring.
Example 2: a valve body structure for micro-fluid ejection, comprising: the piezoelectric ceramic block is characterized by comprising a shell 1, a firing pin 2 and a piezoelectric ceramic block 3, wherein the shell 1 is internally provided with an accommodating cavity 4 and a through hole 5 which is positioned on the right end surface and communicated with the accommodating cavity 4, the piezoelectric ceramic block 3 is positioned in the accommodating cavity 4, one end of the firing pin 2 embedded in the through hole 5 is positioned in the accommodating cavity 4, the other end of the firing pin 2 is contacted with a capillary, and an elastic mechanism 6 is arranged between an end 21 of the firing pin 2 positioned at one end in the accommodating cavity 4 and the through hole 5, so that one end of the firing pin 2 is contacted with one end of the piezoelectric ceramic block 3;
the left end face of the shell 1 is provided with a screw hole 7 communicated with the accommodating cavity 4, and one end of a fine tuning bolt 8 is screwed into the screw hole 7 of the shell 1 and is contacted with the left end of the piezoelectric ceramic block 3.
The elastic mechanism 6 is sleeved on the firing pin 2.
The end 21 of the striker 2 is a flange.
When the valve body structure for micro-fluid injection is adopted, the shell is internally provided with the containing cavity and the through hole which is positioned on the right end surface and communicated with the containing cavity, the piezoelectric ceramic block is positioned in the containing cavity, one end of the firing pin embedded in the through hole is positioned in the containing cavity, the other end of the firing pin is contacted with the capillary, and an elastic mechanism is arranged between the end part of the firing pin positioned at one end of the containing cavity and the through hole, so that one end of the firing pin is contacted with one end of the piezoelectric ceramic block, the quick-release maintenance is convenient, the maintenance efficiency is improved, the impact force at each time is constant, and the stability and the consistency of the liquid outlet effect are ensured;
and the left end surface of the shell is provided with a screw hole communicated with the accommodating cavity, and one end of a fine adjustment bolt is screwed into the screw hole of the shell and is contacted with the left end of the piezoelectric ceramic block, so that the quick-release maintenance is convenient, the maintenance efficiency is improved, and the size of liquid drops and the liquid outlet frequency can be adjusted, thereby improving the universality and the liquid outlet precision of the injection valve.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. A valve body structure for micro-fluid ejection, characterized by: the method comprises the following steps: the piezoelectric ceramic block is characterized by comprising a shell (1), a firing pin (2) and a piezoelectric ceramic block (3), wherein the shell (1) is internally provided with an accommodating cavity (4) and a through hole (5) which is positioned on the right end face and communicated with the accommodating cavity (4), the piezoelectric ceramic block (3) is positioned in the accommodating cavity (4), one end of the firing pin (2) embedded into the through hole (5) is positioned in the accommodating cavity (4), the other end of the firing pin (2) is contacted with a capillary tube, and an elastic mechanism (6) is arranged between an end part (21) of the firing pin (2) positioned at one end in the accommodating cavity (4) and the through hole (5), so that one end of the firing pin (2) is contacted with one end of the piezoelectric ceramic block (3);
the left end face of the shell (1) is provided with a screw hole (7) communicated with the containing cavity (4), and one end of a fine tuning bolt (8) is screwed into the screw hole (7) of the shell (1) and is contacted with the left end of the piezoelectric ceramic block (3).
2. The valve body structure for micro-fluid ejection of claim 1, wherein: the elastic mechanism (6) is sleeved on the firing pin (2).
3. The valve body structure for micro-fluid ejection of claim 2, wherein: the end (21) of the firing pin (2) is a flange part.
4. A valve body structure for micro-fluid ejection according to any one of claims 1 to 3, wherein: the elastic mechanism (6) is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122197003.7U CN215878518U (en) | 2021-09-10 | 2021-09-10 | Valve body structure for micro-fluid ejection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122197003.7U CN215878518U (en) | 2021-09-10 | 2021-09-10 | Valve body structure for micro-fluid ejection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215878518U true CN215878518U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122197003.7U Active CN215878518U (en) | 2021-09-10 | 2021-09-10 | Valve body structure for micro-fluid ejection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215878518U (en) |
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2021
- 2021-09-10 CN CN202122197003.7U patent/CN215878518U/en active Active
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