Piezoelectric valve

Abstract

The utility model provides a piezoelectric valve, which comprises a body and a displacement detection device, and is characterized in that the body comprises a base and a lever movably connected to the base; the displacement detection device comprises a fixed part and a detection part; the detection piece is assembled on the base; the lever is provided with an installation side facing one side of the detection piece, the fixing piece is fixedly assembled on the installation side, and the detection piece is used for detecting displacement of the fixing piece in the first direction. The detection piece can detect the distance between the detection piece and the fixing piece in real time, and therefore the displacement of the fixing piece in the first direction can be obtained in real time. The lever can drive the fixed part to move, so that the displacement of the lever in the first direction can be determined in real time, the displacement condition of the lever can be finally determined in real time according to a preset calculation algorithm and the like, and the technical problems that a piezoelectric valve cannot measure the displacement value of the lever in real time and the displacement condition of the lever cannot be clearly known in the prior art can be solved. And meanwhile, the device has the effects of simple structure and low cost.

Description

Technical Field

[0001] This utility model belongs to the field of piezoelectric valve technology, and in particular relates to a piezoelectric valve. Background Technology

[0002] A piezoelectric valve is a type of valve that uses the piezoelectric effect to control fluid flow. Due to its advantages such as high precision, high speed, and low power consumption, piezoelectric valves are widely used in many fields, including the automotive industry and medical equipment. Piezoelectric valves typically incorporate a lever to amplify the displacement of the piezoelectric ceramic, thereby achieving greater valve core displacement and stronger flow control capabilities. However, current piezoelectric valve technologies cannot measure the lever displacement in real time, and therefore cannot clearly determine the lever's displacement status. Utility Model Content

[0003] The technical objective of this utility model is to provide a piezoelectric valve that solves the technical problem in related technologies that piezoelectric valves cannot measure lever displacement values ​​in real time and cannot clearly understand the displacement of the lever.

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows: a piezoelectric valve includes a body and a displacement detection device. The body includes a base and a lever movably connected to the base. The displacement detection device includes a fixing member and a detection member. The detection member is assembled on the base. The lever has a mounting side facing the detection member. The fixing member is fixedly assembled on the mounting side. The detection member is used to detect the displacement of the fixing member along a first direction.

[0005] Furthermore, in some embodiments, the displacement detection device further includes an adjusting member, the detection member being fixedly assembled to the base via the adjusting member, and the adjusting member being movable and connected to the base along the first direction.

[0006] Furthermore, in some embodiments, the base is provided with a positioning groove and a positioning hole located in the positioning groove, the adjusting member is provided with an adjusting groove extending in a first direction, the adjusting groove communicating with the positioning hole, the displacement detection device further includes an adjusting screw, the adjusting screw is fixedly connected to the positioning hole through the adjusting groove, and the nut of the adjusting screw is fixed to the side of the adjusting member away from the positioning hole.

[0007] Furthermore, in some embodiments, the detection element is detachably connected to the adjustment element.

[0008] Furthermore, in some embodiments, the detection element is connected to the adjustment element by screws, snaps, or threads.

[0009] Furthermore, in some embodiments, the detection element includes a displacement sensor, and the piezoelectric valve further includes a calculation module, the calculation module and the displacement sensor being electrically connected.

[0010] Furthermore, in some embodiments, the fastener includes a magnet, which is fixedly mounted to the mounting side.

[0011] Furthermore, in some embodiments, the mounting side is provided with a mounting hole, and the magnet is fixedly assembled in the mounting hole and partially protrudes from the mounting hole.

[0012] The piezoelectric valve in this invention has the following advantages compared with related technologies:

[0013] In this invention, a displacement detection device is provided on the piezoelectric valve body. The detection element is mounted on the base and can detect the distance between itself and the fixed element in real time, thereby obtaining the displacement of the fixed element along the first direction in real time. The fixed element is mounted on the mounting side of the lever. When the lever moves, it can drive the fixed element to move. Thus, by detecting the displacement of the fixed element along the first direction in real time, the displacement of the lever along the first direction can be determined in real time. Based on preset calculation algorithms, the displacement of the lever can be determined in real time. This solves the technical problem in related technologies where piezoelectric valves cannot measure the lever displacement value in real time and cannot clearly understand the lever displacement. It also has the advantages of simple structure and low cost. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the piezoelectric valve in an embodiment of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the piezoelectric valve in an embodiment of this utility model.

[0017] In the accompanying drawings, the reference numerals indicate: 1. Body; 11. Base; 111. Positioning groove; 112. Positioning hole; 12. Lever; 121. Mounting side; 2. Displacement detection device; 21. Fixing element; 22. Detecting element; 23. Adjusting element; 231. Adjusting groove; 24. Adjusting screw. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Please see Figures 1 to 2 This utility model provides a piezoelectric valve, including a body 1 and a displacement detection device 2. The body 1 includes a base 11 and a lever 12 movably connected to the base 11. The displacement detection device 2 includes a fixing member 21 and a detection member 22. The detection member 22 is assembled on the base 11. The lever 12 has a mounting side 121 facing the detection member 22. The fixing member 21 is fixedly assembled on the mounting side 121. The detection member 22 is used to detect the displacement of the fixing member 21 along a first direction.

[0022] In this embodiment of the invention, a displacement detection device 2 is provided on the piezoelectric valve body 1. The detection element 22 is assembled on the base 11, and the detection element 22 can detect its distance from the fixing element 21 in real time, thereby obtaining the displacement of the fixing element 21 along the first direction in real time. The fixing element 21 is assembled on the mounting side 121 of the lever 12. When the lever 12 moves, the lever 12 can drive the fixing element 21 to move. Thus, by detecting the displacement of the fixing element 21 along the first direction in real time, the displacement of the lever 12 along the first direction can be determined in real time. Based on preset calculation algorithms, the displacement of the lever 12 can be determined in real time. This solves the technical problem in related technologies that piezoelectric valves cannot measure the displacement value of the lever 12 in real time and cannot clearly understand the displacement of the lever 12. It also has the advantages of simple structure and low cost.

[0023] For example, the first direction can be perpendicular to the mounting side 121 of the lever 12 in the initial state, such as... Figure 1 As shown, the first direction can be parallel to the X-axis, and the length of lever 12 is a constant. Thus, during the swinging process, the displacement of lever 12 can be calculated using conventional calculation formulas. Specifically, the swing angle of lever 12 and the displacement along the second direction can be determined. The second direction is a dynamic direction, specifically a direction that is orthogonal to lever 12 in real time.

[0024] Furthermore, in some embodiments, the displacement detection device 2 further includes an adjusting member 23, the detection member 22 is fixedly assembled to the base 11 by the adjusting member 23, and the adjusting member 23 is movable and connected to the base 11 along the first direction.

[0025] Specifically, in actual use, the distance between the lever 12 and the detection element 22 along the first direction may differ for different piezoelectric valve bodies 1. Therefore, by fixing the detection element 22 to the adjusting member 23, and moving the adjusting member 23 along the first direction to the base 11, the detection element 22 can be moved along the first direction to the base 11 via the adjusting member 23. In this way, the distance between the detection element 22 and the lever 12 along the first direction can be adjusted, that is, the distance between the detection element 22 and the magnet along the first direction can be adjusted, so that the magnet is within the displacement detection range of the detection element 22, thus determining the relative distance between the detection element 22 and the lever 12 in the initial state. Furthermore, this allows the displacement detection device 2 to be applied to various piezoelectric valve bodies 1.

[0026] Furthermore, in some embodiments, the base 11 has a positioning groove 111 and a positioning hole 112 located in the positioning groove 111, the adjusting member 23 has an adjusting groove 231 extending along the first direction, the adjusting groove 231 communicates with the positioning hole 112, the displacement detection device 2 also includes an adjusting screw 24, the adjusting screw 24 is fixedly connected to the positioning hole 112 through the adjusting groove 231, and the nut of the adjusting screw 24 is fixed to the side of the adjusting member 23 away from the positioning hole 112.

[0027] Specifically, a positioning groove 111 is formed in the base 11, and the positioning groove 111 has two openings, one facing the adjusting member 23 and the other facing the magnet. The positioning groove 111 matches the adjusting member 23. In addition, the adjusting groove 231 of the adjusting member 23 can be racetrack-shaped, and the two straight sides of the positioning groove 111 can be parallel to the first direction. Furthermore, the positioning groove 111 is also provided with a positioning hole 112 facing the adjusting member 23. When the adjusting member 23 is set in the positioning groove 111, the adjusting groove 231 and the positioning hole 112 are connected. When the adjusting member 23 moves relative to the positioning groove 111 along the first direction, the positioning hole 112 can always be exposed through the adjusting groove 231 and will not be covered by the adjusting member 23. Thus, the adjusting screw 24 can pass through the adjusting groove 231 and connect to the positioning hole 112. The nut of the adjusting screw 24 is fixed on the outside of the adjusting member 23, thereby achieving relative fixation between the adjusting member 23 and the base 11. In other words, when manually adjusting the distance between the detection element 22 and the magnet, the adjusting screw 24 can be opened first, and the adjusting element 23 can be moved along the first direction to change the position of the adjusting element 23 in the positioning groove 111. When the distance between the detection element 22 and the lever 12 in the initial state is determined, the adjusting element 23 is locked by the adjusting screw 24 so that the distance between the detection element 22 and the magnet in the initial state is determined for subsequent detection.

[0028] Furthermore, in some embodiments, the detection element 22 is detachably connected to the adjusting element 23. Exemplarily, the detection element 22 and the adjusting element 23 are connected by screws, snap-fit ​​connections, or threaded connections. After the detection element 22 and the adjusting element 23 are fixedly assembled, the detection element 22 can be moved by the adjusting element 23.

[0029] In other embodiments, the detection element 22 may be integrally formed with the adjustment element 23.

[0030] Furthermore, in some embodiments, the detection element 22 includes a displacement sensor, and the piezoelectric valve also includes a calculation module, which is electrically connected to the displacement sensor.

[0031] Specifically, the distance between the lever 12 and the magnet can be detected by the displacement sensor. The displacement sensor can transmit the detected distance data to the calculation module, and the calculation module can finally determine the displacement of the lever 12.

[0032] In some embodiments, the piezoelectric valve may also include a display panel, in which the calculation module can display the calculated displacement of lever 12 on the display panel.

[0033] Furthermore, in some embodiments, the fastener 21 includes a magnet, which is fixedly mounted to the mounting side 121.

[0034] Specifically, the fixing member 21 can be a magnet, which is fixedly mounted on the mounting side 121 of the lever 12. In this way, the lever 12 can drive the detection member 22 to move, and the detection member 22 can detect its distance from the magnet in real time, thereby detecting the displacement of the lever 12 in real time.

[0035] Furthermore, in some embodiments, the mounting side 121 has a mounting hole, and the magnet is fixedly assembled in the mounting hole and partially protrudes from the mounting hole.

[0036] Specifically, the mounting side 121 can be provided with mounting holes, on which magnets can be placed, thereby achieving a positioning connection between the magnet and the lever 12, allowing the lever 12 to drive the magnet to move. Furthermore, the magnet portion protrudes from the mounting hole, allowing the detection element 22 to detect its relative distance to the magnet in real time.

[0037] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0038] The above is a description of the technical solution provided by this utility model. For those skilled in the art, based on the idea of ​​the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A piezoelectric valve, characterized in that, include: The body includes a base and a lever movably connected to the base; the displacement detection device includes a fixing member and a detection member; the detection member is assembled on the base; the lever has a mounting side facing the detection member, the fixing member is fixedly assembled on the mounting side, and the detection member is used to detect the displacement of the fixing member along a first direction.

2. The piezoelectric valve according to claim 1, characterized in that, The displacement detection device further includes an adjusting member, the detection member is fixedly assembled to the base via the adjusting member, and the adjusting member is movable and connected to the base along the first direction.

3. The piezoelectric valve according to claim 2, characterized in that, The base has a positioning groove and a positioning hole located in the positioning groove. The adjusting member has an adjusting groove extending in a first direction and communicating with the positioning hole. The displacement detection device also includes an adjusting screw. The adjusting screw is fixedly connected to the positioning hole through the adjusting groove, and the nut of the adjusting screw is fixed to the side of the adjusting member away from the positioning hole.

4. The piezoelectric valve according to claim 2, characterized in that, The detection element is detachably connected to the adjustment element.

5. The piezoelectric valve according to claim 4, characterized in that, The detection component is connected to the adjustment component by screws, snaps, or threads.

6. The piezoelectric valve according to claim 1, characterized in that, The detection element includes a displacement sensor, and the piezoelectric valve also includes a calculation module, which is electrically connected to the displacement sensor.

7. The piezoelectric valve according to claim 1, characterized in that, The fastener includes a magnet, which is fixedly assembled to the mounting side.

8. The piezoelectric valve according to claim 7, characterized in that, The mounting side has a mounting hole, and the magnet is fixedly assembled in the mounting hole and partially protrudes from the mounting hole.

Images