An electrical-grade magnesium oxide powder uniformity detection device

Abstract

The application discloses a kind of electrical-grade magnesium oxide powder uniformity detection devices, it is related to electrical-grade magnesium oxide powder uniformity detection technical field, including box, support being set at the top surface one end of box and laser particle size analyzer body being set on the bottom surface of support, sample box is slidably arranged on the top surface of box by guide piece, and placing piece for sample placement is arranged in sample box, lid is arranged in sample box, connecting rod is slidably arranged in strip-shaped opening, multi-section electric push rod is rotatably arranged on the inner wall of box, and the movable end of multi-section electric push rod is provided with driving mechanism;The application is moved by sample box, and by the cooperation of sliding block, stop block, extrusion spring one and extrusion spring two, the horizontal vibration of sample box is realized, so that electrical-grade magnesium oxide powder is evenly spread flat;Agglomerated electrical-grade magnesium oxide powder can be dispersed simultaneously, so as to facilitate the detection of electrical-grade magnesium oxide powder, improve the accuracy of electrical-grade magnesium oxide powder detection data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical grade magnesium oxide powder uniformity detection, and particularly relates to an electrical grade magnesium oxide powder uniformity detection device. BACKGROUND

[0002] The particle uniformity of electrical grade magnesium oxide powder directly affects its core performances such as insulation and heat conduction, and is a key index for quality control of related products in the electrical field. At present, the industry mainly uses a laser particle size analyzer for detection. In the process of detecting the electrical grade magnesium oxide powder, the sample needs to be placed in a detection platform or a sample container by manual operation, and then moved to a detection area. However, the magnesium oxide powder is easy to absorb moisture in the air and agglomerate, and the manual flattening operation cannot guarantee the uniform distribution of the sample, and local accumulation may occur, so that the laser detection cannot cover all the effective samples, directly affecting the accuracy of the detection data. SUMMARY

[0003] The present application relates to the technical field of electrical grade magnesium oxide powder uniformity detection, and particularly relates to an electrical grade magnesium oxide powder uniformity detection device.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] The electrical grade magnesium oxide powder uniformity detection device comprises a box body, a support arranged at one end of the top surface of the box body, and a laser particle size analyzer body arranged on the bottom surface of the support, and further comprises:

[0006] A sample box is slidably arranged on the top surface of the box body through a guide piece, and a placing piece for placing a sample is arranged in the sample box.

[0007] A box cover is arranged in the sample box.

[0008] A strip-shaped opening is symmetrically arranged on the top surface of the box body, a connecting rod is slidably arranged in the strip-shaped opening, and the connecting rod is slidably arranged with the box cover.

[0009] A multi-section electric push rod is rotatably arranged on the inner wall of the box body, and a driving mechanism for driving the box cover is arranged on the movable end of the multi-section electric push rod.

[0010] Preferably, the driving mechanism comprises a connecting head fixed to the multi-section electric push rod, a connecting shaft is rotatably arranged in the connecting head, square blocks are fixedly arranged at both ends of the connecting shaft, and arc chamfers are arranged at four corners of the square blocks.

[0011] Rectangular plates are symmetrically arranged on the inner top surface of the box body, and adjusting pieces matched with the square blocks are arranged on the rectangular plates.

[0012] Preferably, the adjusting member includes a vertical groove formed on the rectangular plate, a long straight groove formed at the bottom of the vertical groove, and an inclined groove formed at the end of the long straight groove, wherein a short straight groove is formed at one end of the inclined groove.

[0013] Preferably, ball grooves are formed on the inner walls of the vertical groove, the long straight groove, the inclined groove and the short straight groove, and each ball groove is embedded with a ball.

[0014] Preferably, an installation cavity is provided at the end of the short straight groove near the inclined groove, a miniature electric actuator is provided in the installation cavity, and a baffle is provided at the movable end of the miniature electric actuator.

[0015] An installation cavity two is provided at the end of the inclined groove near the short straight groove. A miniature electric actuator two is provided in the installation cavity two. A baffle two is provided at the movable end of the miniature electric actuator two.

[0016] Preferably, a pressure sensor is provided on the inner wall of the short straight groove near the inclined groove, and a control device that cooperates with the pressure sensor is provided on the front end face of the box.

[0017] Preferably, the guide includes symmetrically formed strip grooves on the top surface of the box, a slide rail is provided in the strip groove, a slider is slidably provided on the slide rail, and the slider is fixedly connected to the bottom surface of the sample box.

[0018] Preferably, a plurality of rectangular cavities are evenly formed on the inner wall of the strip groove, and a stop block and a compression spring are slidably arranged in the rectangular cavity. The two sides of the stop block are symmetrically formed with inclined chamfers.

[0019] A circular rod is fixed to the top of the connecting rod, and a rectangular slider is fixed to the end of the circular rod. A rectangular groove that matches the rectangular slider is provided on the side of the box cover, and a compression spring is also provided in the rectangular groove.

[0020] Preferably, the placement component includes a placement mesh plate disposed inside the sample box and hooks symmetrically disposed on the sides of the placement mesh plate. The inner wall of the sample box has slots that match the hooks, and handles are symmetrically fixed to the placement mesh plate.

[0021] Preferably, a rectangular mounting opening is provided on the top surface of the box cover, and a mesh plate is provided on the top of the rectangular mounting opening and a hot air blower is provided at the bottom.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. This invention, through the use of a driving mechanism, facilitates the initial downward movement of the lid to close the sample box, preventing the absorption of humid air by the electrical grade magnesium oxide powder and thus avoiding agglomeration. This is beneficial for the detection of the electrical grade magnesium oxide powder. Then, the sample box is moved below the laser particle size analyzer body. Next, the lid is moved upward to detach from the sample box. Finally, the lid is moved horizontally, fully exposing the electrical grade magnesium oxide powder inside the sample box to the laser particle size analyzer body, facilitating detection and improving the efficiency of electrical grade magnesium oxide powder detection. During the movement of the sample box, the coordinated use of sliders, stops, and compression springs (one and two) achieves horizontal vibration of the sample box, uniformly spreading the electrical grade magnesium oxide powder. Simultaneously, it disperses any agglomerated electrical grade magnesium oxide powder, thereby improving the accuracy of the detection data.

[0024] 2. The present invention facilitates the removal of electrical grade magnesium oxide powder from the sample box by using a placement component, and also facilitates the replacement of the placement screen. This avoids contamination of untested electrical grade magnesium oxide powder by residual electrical grade magnesium oxide powder on the placement screen, thereby improving the accuracy of electrical grade magnesium oxide powder detection data. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure from a frontal view provided according to an embodiment of the present invention is shown;

[0026] Figure 2 A side-view cross-sectional structural schematic diagram is shown according to an embodiment of the present invention;

[0027] Figure 3 A schematic cross-sectional view of the structure provided in an embodiment of the present invention is shown;

[0028] Figure 4 This is a schematic diagram of the connection between the box cover and the adjusting member according to an embodiment of the present invention from a first perspective;

[0029] Figure 5 This is a schematic diagram of the connection between the box cover and the adjusting member according to an embodiment of the present invention from a second perspective;

[0030] Figure 6 A schematic diagram of the structure of a multi-section electric actuator connected to a connecting shaft according to an embodiment of the present invention is shown;

[0031] Figure 7 A schematic diagram of the box cover from a top view according to an embodiment of the present invention is shown;

[0032] Figure 8A schematic diagram of the box cover from an upward angle according to an embodiment of the present invention is shown;

[0033] Figure 9 A top-view sectional view of a housing provided according to an embodiment of the present invention is shown;

[0034] Figure 10 for Figure 9 A magnified view of a section at point A in the middle;

[0035] Figure 11 A schematic diagram of the structure of the placement component provided according to an embodiment of the present invention is shown;

[0036] Figure 12 A schematic diagram of the structure of the adjusting member provided according to an embodiment of the present invention is shown.

[0037] Legend:

[0038] 1. Housing; 2. Control equipment; 3. Support frame; 4. Laser particle size analyzer body; 5. Sample box; 6. Mesh plate; 7. Box lid; 8. Connecting rod; 9. Slide rail; 10. Slider; 11. Rectangular plate; 12. Connecting shaft; 13. Multi-section electric actuator; 14. Adjusting component; 1401. Vertical slot; 1402. Long straight slot; 1403. Inclined slot; 1404. Short straight slot; 15. Pressure sensor; 16. Square block; 17. Arc-shaped inverted... 18. Angle; 19. Round rod; 20. Rectangular slider; 21. Rectangular groove; 22. Compression spring one; 23. Hot air blower; 24. Strip opening; 25. Stop block; 26. Inclined chamfer; 27. Connector; 28. Rectangular cavity; 29. ​​Compression spring two; 30. Mesh plate placement; 31. Hook; 32. Handle; 33. Slot; 34. Ball bearing; 35. Miniature electric actuator one; 36. Baffle one; 37. Miniature electric actuator two; 38. Baffle two. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1 - Figure 12 The present invention provides a technical solution:

[0041] An electrical-grade magnesium oxide powder uniformity testing device includes a housing 1, a bracket 3 bolted to one edge of the top surface of the housing 1, and a laser particle size analyzer body 4 mounted on the bottom surface of the bracket 3 (a prior art instrument that calculates the abundance ratio of corresponding particle size classes by comparing the light energy measured at a specific angle with the total light energy), and further includes:

[0042] The sample box 5 is slidably mounted on the top surface of the box body 1 via a guide. The sample box 5 is equipped with a placement device for placing samples. The use of the placement device facilitates the removal of electrical grade magnesium oxide powder from the sample box 5 and also facilitates the replacement of the placement screen 29. This prevents the placement screen 29 from being contaminated by the untested electrical grade magnesium oxide powder due to the presence of already tested electrical grade magnesium oxide powder residue, thereby improving the accuracy of the electrical grade magnesium oxide powder test data.

[0043] The lid 7 is placed inside the sample box 5. The lid 7 covers the sample box 5 to prevent the electrical grade magnesium oxide powder from absorbing the humid air from the outside and causing the powder to agglomerate. This is beneficial for the detection of the electrical grade magnesium oxide powder.

[0044] A strip-shaped opening 23 is symmetrically opened on the top surface of the box body 1. A connecting rod 8 is slidably provided inside the strip-shaped opening 23, and the connecting rod 8 is slidably set with the box cover 7. The use of the connecting rod 8 facilitates the support of the box cover 7, thereby facilitating the opening or movement of the box cover 7.

[0045] The multi-section electric actuator 13 is rotatably mounted on the inner wall of the housing 1, and is also inclined on the inner wall of the housing 1. The movable end of the multi-section electric actuator 13 is equipped with a drive mechanism for driving the housing cover 7. Through the use of the drive mechanism, the housing cover 7 is first moved downward to close the housing cover 7 with the sample box 5, which prevents the absorption of the external humid air by the electrical grade magnesium oxide powder and the agglomeration of the electrical grade magnesium oxide powder. This is beneficial for the detection of electrical grade magnesium oxide powder. Then, the sample box 5 is moved to the bottom of the laser particle size analyzer body 4. Then, the housing cover 7 is moved upward to separate the housing cover 7 from the sample box 5. Finally, the housing cover 7 is moved horizontally so that the electrical grade magnesium oxide powder in the sample box 5 is completely exposed to the bottom of the laser particle size analyzer body 4, which is convenient for the detection of electrical grade magnesium oxide powder and improves the working efficiency of electrical grade magnesium oxide powder detection.

[0046] In this invention, the driving mechanism includes a connector 26 fixedly connected to the multi-section electric push rod 13. A connecting shaft 12 is rotatably provided inside the connector 26. Square blocks 16 are fixedly connected to both ends of the connecting shaft 12. The use of square blocks 16 prevents the connecting rod 8 from rotating, improves the stability of the box cover 7, and facilitates the stable locking of the box cover 7 into the sample box 5. The four corners of the square blocks 16 are provided with arc-shaped chamfers 17. The use of arc-shaped chamfers 17 facilitates the movement of the square blocks 16 at the corners within the adjusting member 14, thereby facilitating the movement of the box cover 7.

[0047] A rectangular plate 11 is symmetrically arranged on the top surface of the box 1. An adjustment component 14 that cooperates with the square block 16 is provided on the rectangular plate 11. By using the adjustment component 14, the box cover 7 can be moved downward, which in turn drives the sample box 5 to move horizontally, and then the box cover 7 can be moved upward. Finally, the box cover 7 can be moved away from the laser particle size analyzer body 4.

[0048] In this invention, the adjusting member 14 includes a vertical groove 1401 formed on the rectangular plate 11, a long straight groove 1402 formed at the bottom of the vertical groove 1401, and an inclined groove 1403 formed at the end of the long straight groove 1402. A short straight groove 1404 is formed at one end of the inclined groove 1403. When the square block 16 is located at the top of the vertical groove 1401, the lid 7 and the sample box 5 are in an open state, which facilitates the placement of samples into the sample box 5. When the square block 16 moves to the bottom of the vertical groove 1401, the lid 7 and the sample box 5 are closed. When the square block 16 moves in the long straight groove 1402, it will move the sample box 5, making it easier to move the sample to the bottom of the laser particle size analyzer body 4. When the square block 16 moves in the inclined groove 1403, it will lift the box cover 7, thus separating the sample box 5 from the box cover 7. When the square block 16 moves in the short straight groove 1404, it will move the box cover 7 away from the laser particle size analyzer body 4, making it easier to expose the electrical grade magnesium oxide powder under the laser particle size analyzer body 4, thus facilitating the detection of the electrical grade magnesium oxide powder.

[0049] In this invention, ball grooves are provided on the inner walls of the vertical groove 1401, the long straight groove 1402, the inclined groove 1403, and the short straight groove 1404. Each ball groove is inlaid with a ball 33. By using the ball 33, the friction between the square block 16 and the vertical groove 1401, the long straight groove 1402, the inclined groove 1403, and the short straight groove 1404 is reduced, thereby facilitating the movement of the square block 16 within the vertical groove 1401, the long straight groove 1402, the inclined groove 1403, and the short straight groove 1404.

[0050] In this invention, a mounting cavity is provided at the end of the short straight groove 1404 near the inclined groove 1403. A miniature electric push rod 34 is provided in the mounting cavity. A baffle 35 is provided at the movable end of the miniature electric push rod 34. By using the miniature electric push rod 34, it is easy to block the square block 16 and ensure that the square block 16 can enter the inclined groove 1403.

[0051] An installation cavity 2 is provided in the inclined groove 1403 near the end of the short straight groove 1404. A miniature electric push rod 2 36 is provided in the installation cavity 2. A baffle 2 37 is provided at the movable end of the miniature electric push rod 2 36. The miniature electric push rod 2 36 and the baffle 2 37 work together to block the square block 16 and ensure that the square block 16 can enter the short straight groove 1404.

[0052] In this invention, a pressure sensor 15 is provided on the inner wall of the short straight groove 1404 near the inclined groove 1403. A control device 2 that cooperates with the pressure sensor 15 is provided on the front end face of the housing 1. The control device 2 also includes a processor and a controller. The processor and the pressure sensor 15 are electrically connected by wires. The control device 2 is electrically connected to the first micro electric actuator 34 and the second micro electric actuator 36 by wires, which facilitates the control of the first micro electric actuator 34 and the second micro electric actuator 36.

[0053] In this invention, the guide includes symmetrically formed strip grooves on the top surface of the box 1, a slide rail 9 is provided in the strip groove, a slider 10 is slidably provided on the slide rail 9, and the slider 10 is fixedly connected to the bottom surface of the sample box 5. The movement of the box 1 is facilitated by the cooperation of the slide rail 9 and the slider 10.

[0054] In this invention, multiple rectangular cavities 27 are uniformly formed on the inner wall of the strip groove. A stop block 24 and a compression spring 28 are slidably arranged in the rectangular cavity 27. One end of the compression spring 28 is fixedly connected to the stop block 24, and the other end is fixedly connected to the inner wall of the rectangular cavity 27. The elastic force of the compression spring 28 is greater than that of the compression spring 21, which facilitates the movement of the box 1. Then, under the action of the compression spring 21, the box 1 is reset, realizing the vibration of the box 1. This facilitates the flattening of the electrical grade magnesium oxide powder in the sample box 5 and avoids the accumulation of electrical grade magnesium oxide powder, thereby facilitating the detection of electrical grade magnesium oxide powder. The two sides of the stop block 24 are symmetrically provided with inclined chamfers 25, which facilitates the passage of the slider 10 through the stop block 24, thereby facilitating the vibration of the sample box 5.

[0055] A circular rod 18 is fixed to the top of the connecting rod 8, and a rectangular slider 19 is fixed to the end of the circular rod 18. A rectangular groove 20 that matches the rectangular slider 19 is provided on the side of the box cover 7, and a compression spring 21 is also provided in the rectangular groove 20. When the sample box 5 moves, the slider 10 will contact the stop block 24, causing the sample box 5 to stop moving, while the connecting rod 8 continues to move. When the compression spring 21 is compressed to its limit, the slider 10 will pass through the stop block 24, and then the sample box 5 will automatically reset under the action of the compression spring 21, realizing the vibration of the sample box 5, thereby making the electrical grade magnesium oxide powder evenly spread; at the same time, it can break up the agglomerated electrical grade magnesium oxide powder, which is beneficial to the detection of electrical grade magnesium oxide powder and improves the accuracy of the detection data of electrical grade magnesium oxide powder.

[0056] In this invention, the placement component includes a placement mesh plate 29 disposed inside the sample box 5, wherein the mesh diameter of the placement mesh plate 29 is smaller than the particle diameter of the electrical grade magnesium oxide powder. Hooks 30 are symmetrically arranged on the side of the placement mesh plate 29. A slot 32 is provided on the inner wall of the sample box 5 to cooperate with the hooks 30. The placement mesh plate 29 is easily placed inside the sample box 5 by the mutual cooperation of the hooks 30 and the slot 32. Handles 31 are symmetrically fixed to the placement mesh plate 29. The use of the handles 31 makes it easy to lift the placement mesh plate 29, thereby facilitating the removal of the electrical grade magnesium oxide powder.

[0057] In this invention, a rectangular mounting opening is provided on the top surface of the box cover 7, and a mesh plate 6 is provided on the top of the rectangular mounting opening to facilitate the ventilation of the sample box 5; a hot air blower 22 is provided at the bottom, and the use of the hot air blower 22 facilitates the removal of humid air inside the sample box 5, preventing the electrical grade magnesium oxide powder from becoming damp and agglomerated, thereby facilitating the detection of electrical grade magnesium oxide powder.

[0058] Working principle: When using this invention, electrical grade magnesium oxide powder is first placed on the placement mesh plate 29 inside the sample box 5;

[0059] Then, the multi-section electric push rod 13 is opened. The movable end of the multi-section electric push rod 13 extends and drives the connecting shaft 12 to move downward, thereby causing the square block 16 to move downward along the vertical groove 1401, which in turn causes the connecting rod 8 to move downward. When the connecting rod 8 moves downward, it will drive the box cover 7 to move downward. When the square block 16 moves to the intersection of the vertical groove 1401 and the long straight groove 1402, the box cover 7 closes with the sample box 5.

[0060] As the movable end of the multi-section electric push rod 13 continues to move, the square block 16 moves along the long straight groove 1402, thereby driving the connecting rod 8 to move horizontally, which in turn drives the sample box 5 to move horizontally.

[0061] At the same time, turn on the hot air blower 22 to dry the humid air inside the sample box 5, so as to prevent the electrical grade magnesium oxide powder from becoming damp and agglomerating, which is beneficial to the detection of electrical grade magnesium oxide powder.

[0062] When the sample box 5 moves horizontally, the slider 10 contacts the stop block 24. Since the elastic force of the second compression spring 28 is greater than that of the first compression spring 21, the sample box 5 stops moving while the connecting rod 8 continues to move. This causes the circular rod 18 to continue moving with the connecting rod 8, which in turn drives the rectangular slider 19 to move, thus compressing the first compression spring 21. When the first compression spring 21 is compressed to its limit, the square block 16 will then press the stop block 24, causing the stop block 24 to enter the rectangular cavity 27. Then, the slider 10 passes through the stop block 24, and under the action of the first compression spring 21, the sample box 5 returns to its original position. By passing through each stop block 24, the horizontal vibration of the sample box 5 is achieved, which facilitates the even spreading and breaking up of agglomerates of electrical grade magnesium oxide powder, which is beneficial for the detection of electrical grade magnesium oxide powder.

[0063] When the square block 16 moves into the inclined groove 1403, it will cause the connecting rod 8 to move upward, thereby moving the box cover 7 upward and simultaneously driving the sample box 5 to move. When the square block 16 moves to the junction of the inclined groove 1403 and the short straight groove 1404, the box cover 7 will separate from the sample box 5, and at the same time, the sample box 5 will move below the laser particle size analyzer body 4.

[0064] When the square block 16 moves into the short straight groove 1404, the pressure sensor 15 receives the signal and transmits it to the processor of the control device 2. The processor processes the signal and controls the controller to extend the movable end of the micro electric push rod 36, causing the baffle 37 to be pushed out. Then, the movable end of the micro electric push rod 34 retracts, causing the baffle 35 to retract. Then, the movable end of the multi-section electric push rod 13 retracts, causing the square block 16 to move along the short straight groove 1404, thereby driving the connecting rod 8 to move horizontally, thereby driving the box cover 7 to move horizontally, exposing the electrical grade magnesium oxide powder under the laser particle size analyzer body 4. Then, the uniformity of the electrical grade magnesium oxide particles is detected by the laser particle size analyzer body 4.

[0065] After the testing of the electrical grade magnesium oxide powder is completed, the movable end of the multi-section electric push rod 13 extends, causing the square block 16 to move to the end of the short straight groove 1404. At this time, the pressure sensor 15 receives the signal and transmits the signal to the controller. The controller controls the movable end of the micro electric push rod 34 to extend, causing the baffle 35 to be pushed out. At the same time, the movable end of the micro electric push rod 36 retracts, causing the baffle 37 to retract. Then, the movable end of the multi-section electric push rod 13 retracts, causing the square block 16 to move along the inclined groove 1403, causing the box cover 7 to move into the sample box 5. Then, the square block 16 moves along the long straight groove 1402 and drives the sample box 5 to reset. Finally, the square block 16 moves to the top of the vertical groove 1401, causing the box cover 7 to be lifted.

[0066] Then, remove the placement screen 29 from the sample box 5, pour out the electrical grade magnesium oxide powder, replace the placement screen 29 with a new one, place the placement screen 29 in the sample box 5, and place the electrical grade magnesium oxide powder on the placement screen 29. Repeat the above operation to achieve continuous detection of electrical grade magnesium oxide powder.

[0067] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting the uniformity of electrical grade magnesium oxide powder, comprising a housing, a support disposed at one end of the top surface of the housing, and a laser particle size analyzer body disposed on the bottom surface of the support, characterized in that, Also includes: The sample box is slidably mounted on the top surface of the box body via guides, and the sample box is equipped with a placement device for placing samples. The lid is located inside the sample box. The strip-shaped openings are symmetrically opened on the top surface of the box. A connecting rod is slidably installed inside the strip-shaped openings, and the connecting rod is slidably installed with the box cover. The multi-section electric actuator is rotatably mounted on the inner wall of the housing, and the movable end of the multi-section electric actuator is equipped with a drive mechanism for driving the housing cover. The drive mechanism includes a connector fixed to a multi-section electric actuator. A connecting shaft is rotatably provided inside the connector. Square blocks are fixed to both ends of the connecting shaft. The four corners of the square blocks are all provided with arc-shaped chamfers. Rectangular plates are symmetrically arranged on the top surface of the box, and adjusting parts that cooperate with square blocks are provided on the rectangular plates; The adjusting component includes a vertical groove formed on a rectangular plate, a long straight groove formed at the bottom of the vertical groove, and an inclined groove formed at the end of the long straight groove, with a short straight groove formed at one end of the inclined groove; An installation cavity is provided at the end of the short straight groove near the inclined groove. A miniature electric actuator is provided in the installation cavity, and a baffle is provided at the movable end of the miniature electric actuator. An installation cavity two is provided at the end of the inclined groove near the short straight groove. A miniature electric actuator two is provided in the installation cavity two. A baffle two is provided at the movable end of the miniature electric actuator two. A pressure sensor is installed on the inner wall of the short straight groove near the inclined groove, and a control device that works with the pressure sensor is installed on the front face of the box. The guide includes symmetrically formed strip grooves on the top surface of the box, a slide rail is provided in the strip groove, a slider is slidably mounted on the slide rail, and the slider is fixedly connected to the bottom surface of the sample box. Multiple rectangular cavities are evenly provided on the inner wall of the strip groove. A stop block and a compression spring are slidably provided in the rectangular cavity. The two sides of the stop block are symmetrically provided with inclined chamfers. A circular rod is fixed to the top of the connecting rod, and a rectangular slider is fixed to the end of the circular rod. A rectangular groove that matches the rectangular slider is opened on the side of the box cover, and a compression spring is also provided in the rectangular groove.

2. The electrical grade magnesium oxide powder uniformity testing device according to claim 1, characterized in that, The inner walls of the vertical groove, long straight groove, inclined groove and short straight groove are all provided with ball grooves, and each ball groove is inlaid with a ball.

3. The electrical grade magnesium oxide powder uniformity testing device according to claim 1, characterized in that, The placement components include a placement mesh plate set inside the sample box and hooks symmetrically arranged on the sides of the placement mesh plate. The inner wall of the sample box has slots that match the hooks, and handles are symmetrically fixed to the placement mesh plate.

4. The electrical grade magnesium oxide powder uniformity testing device according to claim 3, characterized in that, A rectangular mounting opening is provided on the top surface of the box cover. A mesh plate is provided on the top of the rectangular mounting opening, and a hot air blower is provided at the bottom.

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