Piezoelectric injection valve liquid drop observation experiment mechanism

Abstract

The utility model discloses a liquid drop observation experiment mechanism for a piezoelectric injection valve, which relates to the technical field of piezoelectric injection valves and comprises a bottom plate and an observation device, the observation device is arranged on the bottom plate, and the piezoelectric injection valve is fixed on one side of the observation device through a fixing rod and a connecting rod. The observation device comprises a Z-axis moving assembly, an X-axis moving assembly, a Y-axis moving assembly and a high-resolution area-array camera, the position of the high-resolution area-array camera can be finely adjusted by rotating an adjusting handle on the moving assemblies, the screen position and the dripping position can be conveniently and accurately corrected, and a locking bolt is arranged, so that the screen position and the dripping position can be accurately adjusted. When the high-resolution area-array camera is adjusted to a proper position, the lower fixing block and the upper moving block can be fixed by screwing the locking bolts, so that the X-axis moving assembly, the Y-axis moving assembly and the Z-axis moving assembly are locked, the high-resolution area-array camera is prevented from moving in the experiment process, and high controllability and accuracy of experiment and observation are ensured.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric jet valve technology, specifically a piezoelectric jet valve droplet observation experimental mechanism. Background Technology

[0002] A piezoelectric jet valve is a miniature jetting device based on the piezoelectric effect. Its main functions include high-precision fluid control and high-speed, non-contact dispensing. It achieves precise control of fluids (such as adhesives and inks) through the piezoelectric effect, producing tiny, uniform droplets to meet the needs of high-precision coating, dispensing, and printing. The working principle of the piezoelectric jet valve relies on the properties of piezoelectric materials. When the piezoelectric material is stimulated by voltage, it deforms, thereby changing the pressure, flow rate, or direction of the fluid. This non-contact dispensing technology can adapt to dispensing processes on various complex surfaces, featuring high speed, high precision, and high adaptability.

[0003] The droplet observation experiment using a piezoelectric jet valve is mainly used to study the formation, size, frequency, and morphology of droplets when liquid passes through the valve. The piezoelectric jet valve utilizes the piezoelectric effect of piezoelectric materials to convert electrical signals into mechanical motion, thereby propelling liquid through a nozzle to form tiny droplets. By observing and analyzing the droplet formation process, the influence of different parameters on droplet size, jet frequency, and jet stability is studied. Therefore, it is necessary to clamp and fix the piezoelectric jet valve and to use a camera to observe the droplets. This requires fixing the camera and precisely adjusting its position. To address this, a piezoelectric jet valve droplet observation experimental mechanism is proposed to improve the accuracy and efficiency of the observation. Utility Model Content

[0004] To address the aforementioned technical problems, a piezoelectric jet valve droplet observation experimental mechanism is provided. This technical solution solves the problem of low observation accuracy caused by low camera movement precision in droplet observation experiments using piezoelectric jet valves.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An experimental mechanism for observing droplets from a piezoelectric jet valve includes a base plate and an observation device. The observation device is disposed on the upper end of the base plate. A first support rod is disposed on one side of the observation device and is fixedly connected to the upper end of the base plate. A first connector is bolted to the upper end of the first support rod. A first connecting rod is inserted through the middle of the first connector and is perpendicular to the first support rod. A second connector is disposed at the end of the first connecting rod away from the first connector. A second connecting rod is vertically disposed in the middle of the second connector. A miniature piezoelectric jet valve is disposed at the lower end of the second connecting rod. A material box is connected to one side of the miniature piezoelectric jet valve.

[0007] The observation device includes a Z-axis moving component, an X-axis moving component, a Y-axis moving component, a support plate, a mounting block, and a high-resolution area array camera. The Z-axis moving component is fixedly connected to one side of the support plate, the X-axis moving component is fixedly connected to the lower end of the support plate, and the Y-axis moving component is located below the X-axis moving component. The mounting block is fixedly connected to the side of the Z-axis moving component away from the support plate, and a high-resolution area array camera is mounted on the other end of the mounting block. One end of the high-resolution area array camera is connected to a telecentric lens. The Z-axis moving component, X-axis moving component, and Y-axis moving component are used to adjust the position of the high-resolution area array camera on the Z-axis, X-axis, and Y-axis, respectively.

[0008] Preferably, the Z-axis moving component, X-axis moving component, and Y-axis moving component have the same structure.

[0009] Preferably, the Y-axis moving component includes a lower fixed block and an upper moving block. The lower end of the lower fixed block is fixedly connected to the base plate, and the upper end of the lower fixed block is provided with a plurality of first slide rails arranged in parallel. The upper moving block is located above the lower fixed block and is slidably connected to the lower fixed block. The lower end of the upper moving block is provided with a plurality of second slide rails that match the first slide rails.

[0010] Preferably, an L-shaped block is fixedly connected to one side of the upper movable block.

[0011] Preferably, a connecting block is fixedly connected to one side of the lower fixing block, an adjusting handle is fixedly connected to the middle of the connecting block, and a push rod is slidably connected to one end of the adjusting handle, so that the adjusting handle can drive the push rod to extend or retract.

[0012] Preferably, a connecting plate is provided at the end of the upper moving block away from the L-shaped block, a slot is provided in the middle of the connecting plate, a locking bolt is provided on one side of the connecting plate, one end of the locking bolt passes through the slot and is threadedly connected to the upper moving block, and the lower end of the connecting plate is threadedly connected to the lower fixed block by a bolt.

[0013] Preferably, a second support rod is fixedly connected to the upper end of the base plate, and an LED fill light is provided in the middle of the second support rod, with the LED fill light facing the observation device.

[0014] The advantages of this utility model compared with the prior art are:

[0015] This invention is equipped with a Z-axis moving component, an X-axis moving component, and a Y-axis moving component. By rotating the adjustment handle, the position of the high-resolution area array camera can be finely adjusted, facilitating precise correction of the screen position and the drop position. Furthermore, a locking bolt is provided. When the high-resolution area array camera is adjusted to the appropriate position, tightening the locking bolt can fix the lower fixed block and the upper moving block, thereby locking the X, Y, and Z-axis moving components and preventing the high-resolution area array camera from moving during the experiment, ensuring high controllability and accuracy of the experiment and observation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the observation device in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the movable component in this utility model.

[0019] The numbers on the map are:

[0020] 1. Base plate;

[0021] 2. Observation device; 21. Z-axis moving assembly; 22. X-axis moving assembly; 23. Y-axis moving assembly; 231. Lower fixed block; 2311. First slide rail; 232. Upper moving block; 2321. Second slide rail; 233. L-shaped block; 234. Connecting block; 235. Adjusting handle; 236. Push rod; 237. Connecting plate; 238. Locking bolt; 24. Support plate; 25. Mounting block; 26. High-resolution area array camera; 261. Telecentric lens;

[0022] 3. First support rod; 31. First connector; 32. First connecting rod; 33. Second connector; 34. Second connecting rod; 35. Miniature piezoelectric injection valve; 36. Material box;

[0023] 4. Second support rod; 41. LED fill light. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0025] like Figure 1 and 2As shown, a piezoelectric jet valve droplet observation experimental mechanism includes a base plate 1 and an observation device 2. The observation device 2 is disposed on the upper end of the base plate 1. A first support rod 3 is disposed on one side of the observation device 2 and is fixedly connected to the upper end of the base plate 1. A first connector 31 is bolted to the upper end of the first support rod 3. A first connecting rod 32 is disposed through the middle of the first connector 31 and is perpendicular to the first support rod 3. A second connector 33 is installed at the end of the first connecting rod 32 away from the first connector 31. A second connecting rod 34 is vertically arranged in the middle of the second connecting member 33. A miniature piezoelectric injection valve 35 is installed at the lower end of the second connecting rod 34. A material box 36 is connected to one side of the miniature piezoelectric injection valve 35. The first connecting member 31 and the second connecting member 33 are both installed by bolts, which can adjust the position of the miniature piezoelectric injection valve 35. A second support rod 4 is fixedly connected to the upper end of the base plate 1. An LED fill light 41 is arranged in the middle of the second support rod 4. The LED fill light 41 is set towards the observation device 2 to provide illumination for the observation experiment.

[0026] The observation device 2 includes a Z-axis moving component 21, an X-axis moving component 22, a Y-axis moving component 23, a support plate 24, a mounting block 25, and a high-resolution area array camera 26. The Z-axis moving component 21 is fixedly connected to one side of the support plate 24, the X-axis moving component 22 is fixedly connected to the lower end of the support plate 24, the Y-axis moving component 23 is located below the X-axis moving component 22, and the mounting block 25 is fixedly connected to the side of the Z-axis moving component 21 away from the support plate 24. The high-resolution area array camera 26 is mounted on the other end of the mounting block 25, and one end of the high-resolution area array camera 26 is connected to a telecentric lens 261. The Z-axis moving component 21, the X-axis moving component 22, and the Y-axis moving component 23 are used to adjust the position of the high-resolution area array camera 26 on the Z-axis, X-axis, and Y-axis, respectively. The Z-axis moving component 21, the X-axis moving component 22, and the Y-axis moving component 23 have the same structure.

[0027] like Figure 3As shown, the Y-axis moving assembly 23 includes a lower fixed block 231 and an upper moving block 232. The lower end of the lower fixed block 231 is fixedly connected to the base plate 1. Multiple first slide rails 2311 are provided on the upper end of the lower fixed block 231, arranged in parallel. The upper moving block 232 is positioned above the lower fixed block 231 and slidably connected to it. Multiple second slide rails 2321 matching the first slide rails 2311 are provided on the lower end of the upper moving block 232. The first slide rails 2311 and second slide rails 2321 reduce the sliding resistance between the lower fixed block 231 and the upper moving block 232. An L-shaped block 233 is fixedly connected to one side of the upper moving block 232, and an L-shaped block 233 is fixedly connected to one side of the lower fixed block 231. A connecting block 234 is connected, and an adjusting handle 235 is fixedly connected to the middle of the connecting block 234. A push rod 236 is slidably connected to one end of the adjusting handle 235. A knob is set at the rear end of the adjusting handle 235, which can drive the push rod 236 to extend or retract. When the push rod 236 extends and abuts against the L-shaped block 233, it will push the upper moving block 232 to move. The Z-axis moving component 21, X-axis moving component 22 and Y-axis moving component 23 are used to adjust the position of the high-resolution area array camera 26 in this way, which facilitates precise correction of the screen position and the drop position, ensuring high controllability and accuracy of experiments and observations. In addition, the high-resolution area array camera 26 can be used with image measurement software to measure droplet diameter, droplet velocity, drop diameter, etc.

[0028] The upper moving block 232 has a connecting plate 237 at the end away from the L-shaped block 233. The connecting plate 237 has a slot in the middle and a locking bolt 238 on one side. One end of the locking bolt 238 passes through the slot and is threaded to the upper moving block 232. The lower end of the connecting plate 237 is threaded to the lower fixed block 231 by a bolt. When the high-resolution area array camera 26 is adjusted to a suitable position, the lower fixed block 231 and the upper moving block 232 can be fixed by tightening the locking bolt 238 to prevent the high-resolution area array camera 26 from moving during the experiment.

[0029] The principle of this invention is as follows: the position of the miniature piezoelectric jet valve 35 is adjusted by adjusting the first connecting member 31 and the second connecting member 33; the LED supplementary light 41 is turned on to provide illumination for the observation experiment; the relative position of the upper moving block 232 and the lower fixed block 231 is adjusted by rotating the knob on the adjusting handle 235; the lower fixed block 231 and the upper moving block 232 are locked by the locking bolt 238; the position of the high-resolution area array camera 26 is adjusted by the cooperation of the Z-axis moving component 21, the X-axis moving component 22 and the Y-axis moving component 23, so that the image of the droplet dripped by the miniature piezoelectric jet valve 35 by the high-resolution area array camera 26 is located in the center of the screen, and the droplet observation experiment can be started. The high-precision moving platform ensures the high controllability and accuracy of the experiment and observation.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piezoelectric ejection valve droplet observation experiment mechanism characterized by comprising: The utility model provides a kind of observation device, including bottom plate (1) and observation device (2), the observation device (2) is arranged on the upper end of bottom plate (1), one side of the observation device (2) is provided with first support rod (3), the first support rod (3) is fixedly connected to the upper end of bottom plate (1), the upper end of the first support rod (3) is installed with first connecting piece (31) by bolt, the middle part of the first connecting piece (31) is provided with first connecting rod (32), the first connecting rod (32) is vertically arranged with first support rod (3), the one end of the first connecting rod (32) away from first connecting piece (31) is installed with second connecting piece (33), the middle part of the second connecting piece (33) is vertically provided with second connecting rod (34), the lower end of the second connecting rod (34) is installed with micro piezoelectric jet valve (35), one side of the micro piezoelectric jet valve (35) is connected with material box (36); The observation device (2) includes a Z-axis moving assembly (21), an X-axis moving assembly (22), a Y-axis moving assembly (23), a support plate (24), a mounting block (25), and a high-resolution area array camera (26). The Z-axis moving assembly (21) is fixedly connected to one side of the support plate (24). The X-axis moving assembly (22) is fixedly connected to the lower end of the support plate (24). The Y-axis moving assembly (23) is arranged below the X-axis moving assembly (22). The Z-axis moving assembly (21) is fixedly connected to the mounting block (25) on the side away from the support plate (24). The other end of the mounting block (25) is installed with the high-resolution area array camera (26). One end of the high-resolution area array camera (26) is connected with a telecentric lens (261). The Z-axis moving assembly (21), the X-axis moving assembly (22), and the Y-axis moving assembly (23) are respectively used to adjust the position of the high-resolution area array camera (26) on the Z-axis, the X-axis, and the Y-axis.

2. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 1, characterized by: The Z-axis moving assembly (21), the X-axis moving assembly (22), and the Y-axis moving assembly (23) are arranged in the same structure.

3. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 1, characterized by: The Y-axis moving assembly (23) includes a lower fixed block (231) and an upper moving block (232). The lower end of the lower fixed block (231) is fixedly connected to the bottom plate (1). The upper end of the lower fixed block (231) is provided with a plurality of first sliding rails (2311). The first sliding rails (2311) are arranged in parallel. The upper moving block (232) is arranged above the lower fixed block (231) and is slidingly connected to the lower fixed block (231). The lower end of the upper moving block (232) is provided with a plurality of second sliding rails (2321) matched with the first sliding rails (2311).

4. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 3, characterized by: One side of the upper moving block (232) is fixedly connected with an L-shaped block (233).

5. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 3, characterized by: One side of the lower fixed block (231) is fixedly connected with a connecting block (234). The middle part of the connecting block (234) is fixedly connected with an adjusting handle (235). One end of the adjusting handle (235) is slidingly connected with a push rod (236). The adjusting handle (235) can drive the push rod (236) to extend or retract.

6. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 3, characterized by: The upper moving block (232) is provided with a connecting plate (237) away from one end of the L-shaped block (233), a slot hole is formed in the middle of the connecting plate (237), a locking bolt (238) is arranged on one side of the connecting plate (237), one end of the locking bolt (238) is screwed with the upper moving block (232) through the slot hole, and the lower end of the connecting plate (237) is screwed with the lower fixed block (231) through a bolt.

7. The piezoelectric ejection valve droplet observation experimental mechanism according to claim 1, characterized by: The upper end of the bottom plate (1) is fixedly connected with a second supporting rod (4), the middle of the second supporting rod (4) is provided with an LED light supplementing lamp (41), and the LED light supplementing lamp (41) is arranged towards the observation device (2).

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