Piezoelectric valve stroke testing device

Abstract

The utility model discloses a piezoelectric valve stroke testing device comprising a mounting rack, the mounting rack comprises a vertically extending substrate, the substrate is respectively provided with a first mounting plate and a second mounting plate which are used for mounting a piezoelectric valve and a dial indicator, the second mounting plate is located below the first mounting plate, the first mounting plate is provided with a first through hole, and the second mounting plate is provided with a second through hole. The second mounting plate is provided with a screw hole for mounting the dial indicator, and during testing, a firing pin of the piezoelectric valve penetrates through the first through hole and extends downwards to abut against a testing head of the dial indicator. By arranging the piezoelectric valve fixing installation position and the dial indicator testing head coaxial with the piezoelectric valve firing pin, the stroke of the piezoelectric valve firing pin can be rapidly and accurately tested, and due to the fact that the relative installation positions of the piezoelectric valve firing pin and the dial indicator testing head are fixed, errors of each time of testing can be effectively reduced; and by arranging the second mounting plate with the extension length smaller than that of the first mounting plate, bolt fixing at the bottom of the piezoelectric valve is facilitated.

Description

Technical Field

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

[0002] A piezoelectric valve is a two-position (or proportional) control valve that utilizes the principle of deformation of a functional ceramic plate under voltage. During use, the piezoelectric performance of the ceramic valve decreases over time or with the number of cycles due to factors such as changes in the microstructure of the material, stress release, or fatigue.

[0003] Currently, the common method for testing the attenuation of piezoelectric valves is to use a dial indicator to measure whether the maximum stroke of the piezoelectric valve's striker has decreased, thereby determining whether the internal ceramic valve needs to be replaced. Since there is no dedicated testing device on the market, testing can only be done through temporary assembly. However, the accuracy of the temporary assembly testing device is insufficient, which often leads to errors in the test results. Utility Model Content

[0004] This utility model addresses the deficiencies in existing technologies by providing a piezoelectric valve stroke testing device. By setting a first mounting plate and a second mounting plate for mounting the piezoelectric valve and a dial indicator, the piezoelectric valve and dial indicator can be quickly installed, facilitating rapid detection of the piezoelectric valve's striker stroke and improving testing accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A piezoelectric valve stroke testing device includes a mounting frame, the mounting frame including a vertically extending base plate, the base plate having a first mounting plate and a second mounting plate respectively for mounting a piezoelectric valve and a dial indicator, the second mounting plate being located below the first mounting plate, the first mounting plate having a first through hole, and the second mounting plate having a screw hole for mounting the dial indicator, during testing, the striker of the piezoelectric valve extends downward through the first through hole and contacts the test head of the dial indicator.

[0007] Preferably, the first mounting plate and the second mounting plate are located on the same side of the substrate and are arranged horizontally parallel to each other.

[0008] Preferably, the extension length of the second mounting plate is less than the extension length of the first mounting plate.

[0009] Preferably, the first mounting plate has a second through hole at the end away from the substrate that corresponds to the first fixing hole on the piezoelectric valve.

[0010] Preferably, the first mounting plate has a first side plate and a second side plate on opposite sides, and the first mounting plate, the first side plate and the second side plate form a positioning groove that matches the shape of the lower end of the piezoelectric valve.

[0011] Preferably, the first side plate and the second side plate are integrally connected to the second mounting plate in a U-shape.

[0012] Preferably, both the first side plate and the second side plate are provided with observation holes.

[0013] Preferably, the substrate has a laterally extending protrusion, and the protrusion has a third through hole corresponding to the second fixing hole on the piezoelectric valve.

[0014] Preferably, the substrate is integrally connected with the first mounting plate and the second mounting plate.

[0015] Preferably, the first through hole and the screw hole are coaxially arranged.

[0016] This invention, by setting a first mounting plate and a second mounting plate for mounting a piezoelectric valve and a dial indicator, allows for the rapid installation of the piezoelectric valve and the dial indicator, facilitating quick detection of the piezoelectric valve's striker stroke and ensuring consistency in the relative installation positions of the piezoelectric valve and the dial indicator during each test, thereby improving test accuracy. Furthermore, by setting a second mounting plate with an extension length less than that of the first mounting plate, it facilitates the bolt fixing at the bottom of the piezoelectric valve.

[0017] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0018] Figure 1 This is a front view of the assembly structure according to an embodiment of the present utility model;

[0019] Figure 2 This is a rear view of the assembly structure according to an embodiment of the present utility model;

[0020] Figure 3 This is an exploded view of the overall structure of an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the piezoelectric valve structure according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the mounting bracket structure according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached diagram:

[0024] 10. Mounting bracket; 101. First bolt; 102. Second bolt; 11. Base plate; 12. First mounting plate; 121. First through hole; 122. Second through hole; 13. Second mounting plate; 131. Screw hole; 14. First side plate; 15. Second side plate; 16. Positioning groove; 17. Observation hole; 18. Protrusion; 181. Third through hole; 20. Dial indicator; 21. Test head; 22. Threaded part; 30. Piezoelectric valve; 31. First fixing hole; 32. Second screw hole; 33. Impact pin. Detailed Implementation

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Please refer to Figure 1-5 As shown, a piezoelectric valve stroke testing device includes a mounting frame 10. The mounting frame 10 includes a vertically extending base plate 11. The base plate 11 is respectively provided with a first mounting plate 12 and a second mounting plate 13 for mounting a piezoelectric valve 30 and a dial indicator 20. The second mounting plate 13 is located below the first mounting plate 12. The first mounting plate 12 has a first through hole 121, and the second mounting plate 13 has a screw hole 131 for mounting the dial indicator 20. The first through hole 121 and the screw hole 131 are coaxially arranged. During testing, the striker 33 of the piezoelectric valve extends downward through the first through hole 121 and abuts against the test head 21 of the dial indicator 20. By setting the first mounting plate 12 and the second mounting plate 13 for mounting the piezoelectric valve 30 and the dial indicator 20, the piezoelectric valve 30 and the dial indicator 20 can be quickly installed, so as to quickly detect the stroke of the striker 33 of the piezoelectric valve and ensure the consistency of the relative installation position of the piezoelectric valve 30 and the dial indicator 20 during each test, thereby improving the testing accuracy.

[0028] Specifically, the first mounting plate 12 and the second mounting plate 13 are located on the same side of the base plate 11 and are arranged laterally parallel. The base plate 11 is integrally connected to the first mounting plate 12 and the second mounting plate 13, respectively. The extension length of the second mounting plate 13 is less than the extension length of the first mounting plate 12. The end of the first mounting plate 12 away from the base plate 11 is provided with a second through hole 122 corresponding to the first fixing hole 31 on the piezoelectric valve 30. By setting the second mounting plate 13 with an extension length less than that of the first mounting plate 12, the second through hole 122 is avoided, facilitating the installation of the piezoelectric valve 30.

[0029] Specifically, the first mounting plate 12 has a first side plate 14 and a second side plate 15 on opposite sides, and the first mounting plate 12, the first side plate 14 and the second side plate 15 form a positioning groove 16 that matches the shape of the lower end of the piezoelectric valve 30.

[0030] Specifically, the first side plate 14 and the second side plate 15 are integrally connected to the second mounting plate 13 in a U-shape, and both the first side plate 14 and the second side plate 15 are provided with observation holes 17.

[0031] Specifically, the substrate 11 is provided with a laterally extending protrusion 18, and the protrusion 18 is provided with a third through hole 181 corresponding to the second fixing hole 32 on the piezoelectric valve 30.

[0032] During assembly, the striker 33 of the piezoelectric valve extends downward through the first through hole 121. The piezoelectric valve 30 is fixedly installed on the piezoelectric valve 30 stroke testing device by the first bolt 101 and the second bolt 102. The first bolt 101 passes through the second through hole 122 and is screwed into the first fixing hole 31. The second bolt 102 passes through the third through hole 181 and is screwed into the second fixing hole 32. The dial indicator 20 has a threaded part 22 on its upper part corresponding to the screw hole 131. The test head 21 of the dial indicator 20 passes through the screw hole 131 from bottom to top. The threaded part 22 is screwed into the first screw hole 131. The striker 33 of the piezoelectric valve abuts against the test head 21 of the dial indicator 20.

[0033] In summary, this utility model, by setting a fixed mounting position for the piezoelectric valve and a dial indicator test head coaxial with the piezoelectric valve striker, can quickly and accurately test the stroke of the piezoelectric valve striker. Since the relative mounting positions of the piezoelectric valve striker and the dial indicator test head are fixed, the error of each test can be effectively reduced. By setting a second mounting plate with an extension length less than that of the first mounting plate, it is convenient to fix the bolts at the bottom of the piezoelectric valve.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technical aspects of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A piezoelectric valve stroke testing device, comprising a mounting bracket, characterized in that, The mounting bracket includes a vertically extending base plate, on which a first mounting plate and a second mounting plate are respectively provided for mounting a piezoelectric valve and a dial indicator. The second mounting plate is located below the first mounting plate. The first mounting plate has a first through hole, and the second mounting plate has a screw hole for mounting the dial indicator. During testing, the striker of the piezoelectric valve extends downward through the first through hole and contacts the test head of the dial indicator.

2. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The first mounting plate and the second mounting plate are located on the same side of the substrate and are arranged horizontally parallel to each other.

3. The piezoelectric valve stroke testing device according to claim 2, characterized in that, The extension length of the second mounting plate is less than that of the first mounting plate.

4. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The first mounting plate has a second through hole at the end away from the substrate, which corresponds to the first fixing hole on the piezoelectric valve.

5. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The first mounting plate has a first side plate and a second side plate on opposite sides, and the first mounting plate, the first side plate and the second side plate form a positioning groove that matches the shape of the lower end of the piezoelectric valve.

6. The piezoelectric valve stroke testing device according to claim 5, characterized in that, The first side plate and the second side plate are integrally connected to the second mounting plate in a U-shape.

7. The piezoelectric valve stroke testing device according to claim 5, characterized in that, Both the first side plate and the second side plate are provided with observation holes.

8. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The substrate has a laterally extending protrusion, and the protrusion has a third through hole corresponding to the second fixing hole on the piezoelectric valve.

9. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The substrate is integrally connected with the first mounting plate and the second mounting plate.

10. The piezoelectric valve stroke testing device according to claim 1, characterized in that, The first through hole and the screw hole are coaxially arranged.

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