Device for detecting particle size of new material nano barium sulfate powder

Abstract

The invention discloses a new material nano barium sulfate powder particle size detection device, and relates to the technical field of powder particle size detection, the new material nano barium sulfate powder particle size detection device comprises a machine body and a cover plate assembly, the surface of the machine body is provided with an installation cavity, and the bottom of the inner wall of the installation cavity is provided with a detection port. According to the novel material nano barium sulfate powder particle size detection device, through cooperation of the servo motor, the lead screw, the liquid rotating cavity, the piston and the angle detection sensor, the rotation angle of the lead screw can be accurately monitored so as to determine the movement distance of the piston, and quantitative suction and injection of sample liquid are achieved; the problems that during manual transfer, the injection amount is difficult to accurately control, and the liquid level comparison error is large are solved, it is ensured that the sample amount in the cube test tube meets the optimal detection requirement, and the accuracy of the particle size detection result is improved; meanwhile, due to the clamping force design of the rubber ring in the detection opening and the elastic square tube clamp, the stability of the test tube in the detection process is guaranteed, the test tube can be conveniently separated from the clamp when the sealing cover plate is opened, the test tube can be conveniently and manually taken, and the operation process is simplified.

Description

Technical Field

[0001] This invention relates to the field of powder particle size detection technology, specifically to a novel device for detecting the particle size of nano-barium sulfate powder. Background Technology

[0002] The particle size analysis of nano-barium sulfate powder typically employs Dynamic Light Scattering (DLS) technology. This technology works by using a laser to irradiate particles uniformly distributed in a liquid medium, generating scattered light. The hydrodynamic diameter of the particles is calculated based on the intensity of the scattered light, thus determining the particle size in the sample. This process often involves first using ultrasonic technology to vibrate the liquid medium and particles mixed in a cylindrical test tube to ensure uniform particle distribution. Then, a sample solution is manually and quantitatively transferred from the cylindrical test tube into a cuboid test tube specifically designed for DLS, as the cuboid design facilitates particle size analysis.

[0003] When manually transferring sample solution from a cylindrical test tube to a cuboid test tube using a pipette, it is often difficult to accurately control the injection volume. Existing particle size detection devices using dynamic light scattering technology only print a liquid level indicator on the side of the cover plate. The liquid level in the cuboid test tube needs to be manually compared with the liquid level indicator to determine the sample solution injection volume. This method can only roughly determine the sample solution injection volume, which has a certain error compared with the optimal injection volume. Moreover, due to the observation angle during comparison, there is a certain overhead or side view, which further increases the error and thus affects the final particle size detection result. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a novel particle size detection device for nano-barium sulfate powder, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel nano-barium sulfate powder particle size detection device, comprising a body and a cover plate assembly. The body has a mounting cavity on its surface, and a detection port is formed at the bottom of the inner wall of the mounting cavity. The cover plate assembly includes a sealing plate hinged to one side of the top of the mounting cavity, and a servo motor is fixed to the upper inner side of the sealing plate. A lead screw is provided at the bottom end of the servo motor, and a liquid transfer chamber is sleeved outside the bottom end of the lead screw. The interior of the liquid transfer chamber is fitted with a [missing information - likely a device or component] on the outer wall of the lead screw. A movable seat cover is provided, and a piston is provided at the bottom of the movable seat cover. A three-way valve is connected to the bottom of the liquid transfer chamber, and a first dropper and a second dropper are respectively provided at the bottom two ends of the three-way valve. A slide rail is provided on both sides of the first dropper inside the cover plate, and a carrier plate is slidably connected to the surface of the slide rail. An elastic square tube clamp is rotatably connected to both ends of the carrier plate through a rotating shaft, and a square test tube is clamped inside the elastic square tube clamp. A through hole is opened on the surface of the elastic square tube clamp, and a cylindrical test tube is sleeved on the outer wall of the second dropper.

[0006] Furthermore, the servo motor is equipped with an angle detection sensor for monitoring the rotation angle of the lead screw, and the central axes of the through hole, the cuboid test tube, and the first dropper are located on the same straight line.

[0007] Furthermore, a clamping rubber ring is provided inside the detection port, and the rubber ring is tightly attached to the outer wall of the cuboid test tube.

[0008] Furthermore, the clamping force of the rubber ring on the solid test tube is greater than that of the elastic square tube clamp on the solid test tube.

[0009] Furthermore, a first electromagnetic plate is provided on one side of the slide rail inside the cover plate, and a second electromagnetic plate is fixed inside the cover plate.

[0010] Furthermore, when energized, the cover plate repels the slide rail through the second electromagnetic plate and the first electromagnetic plate, and the slide rail extends outward from inside the cover plate under the action of repulsion after the second electromagnetic plate is energized.

[0011] Furthermore, the outer wall of the liquid transfer chamber is connected to a water injection pipe via a one-way valve, and a residual liquid recovery assembly is provided on one side of the inner side of the installation chamber.

[0012] Furthermore, the residual liquid recovery assembly includes an electric push rod, and a bracket is fixed to the movable end of the electric push rod.

[0013] Furthermore, recycling tubes are fixedly installed on both sides of the top of the bracket, and a rubber sealing sleeve is provided at one end of the recycling tube.

[0014] Furthermore, the other end of the recycling pipe is connected to a corrugated pipe, and the end of the corrugated pipe away from the recycling pipe is connected to a recycling pool.

[0015] This invention provides a novel device for detecting the particle size of nano-barium sulfate powder, which has the following beneficial effects: 1. This novel nano-barium sulfate powder particle size detection device, through the cooperation of a servo motor, lead screw, liquid transfer chamber, piston, and angle detection sensor, can accurately monitor the rotation angle of the lead screw to determine the piston movement distance, thereby achieving quantitative aspiration and injection of sample liquid. This solves the problems of difficulty in accurately controlling the injection volume and large liquid level comparison errors during manual transfer, ensuring that the sample volume in the cubic test tube meets the optimal detection requirements and improving the accuracy of particle size detection results. At the same time, the clamping force design of the rubber ring and elastic square tube clamp inside the detection port not only ensures the stability of the test tube during the detection process, but also allows for easy detachment from the clamp when the sealing plate is opened, facilitating manual handling of the test tube and simplifying the operation process.

[0016] 2. This novel nano-barium sulfate powder particle size detection device utilizes the principle of like poles repulsion in electromagnetic plates. When energized, it drives the slide rail to extend, allowing the cuboid test tube to be more securely inserted into the detection port for loading, ensuring the reliability of the detection process. The residual liquid recovery component, through structures such as an electric push rod, recovery tube, and corrugated pipe, can simultaneously flush the transfer chamber and dropper during detection, promptly removing residual sample liquid and avoiding cross-contamination. Furthermore, the flushing liquid can be efficiently recovered and treated. This flushing process runs parallel to the detection operation, eliminating the need for additional waiting time, thus improving the continuity and overall efficiency of the detection and reducing operational complexity. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the cover plate of a novel nano-barium sulfate powder particle size detection device of the present invention after it is closed. Figure 2 This is a schematic diagram of the structure of the cover plate of the novel nano-barium sulfate powder particle size detection device of the present invention when the cover plate is closed; Figure 3 This is a cross-sectional schematic diagram of the internal structure of the mounting cavity of a novel nano-barium sulfate powder particle size detection device according to the present invention; Figure 4 This is a schematic diagram of the structure of the cover plate of the novel nano-barium sulfate powder particle size detection device of the present invention in the open and upright state. Figure 5 This is a schematic diagram of the piston structure of a novel nano-barium sulfate powder particle size detection device according to the present invention; Figure 6 This is a schematic diagram of the structure of the recovery tube extending out of the novel nano-barium sulfate powder particle size detection device of the present invention and connected to the first dropper and the second dropper.

[0018] In the diagram: 1. Body; 2. Mounting chamber; 3. Detection port; 4. Cover plate assembly; 401. Cover plate; 402. Servo motor; 403. Lead screw; 404. Liquid transfer chamber; 405. Moving seat sleeve; 406. Piston; 407. Three-way valve; 408. First dropper; 409. Second dropper; 410. Slide rail; 411. Carrier plate; 412. Rotating shaft; 413. Elastic square tube clamp; 414. Cuboid test tube; 415. Through hole; 416. Cylindrical test tube; 5. Water injection pipe; 6. Residual liquid recovery assembly; 601. Electric push rod; 602. Support; 603. Recovery pipe; 604. Rubber sealing sleeve; 605. Corrugated pipe. Detailed Implementation

[0019] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0020] like Figures 1-6As shown, the present invention provides a technical solution: a novel nano-barium sulfate powder particle size detection device, comprising a body 1 and a cover plate assembly 4. The surface of the body 1 has a mounting cavity 2, and the bottom of the inner wall of the mounting cavity 2 has a detection port 3. The cover plate assembly 4 includes a sealing plate 401 hinged to one side of the top of the mounting cavity 2. A servo motor 402 is fixed to the upper inner side of the sealing plate 401. A lead screw 403 is provided at the bottom end of the servo motor 402, and a liquid transfer chamber 404 is sleeved outside the bottom end of the lead screw 403. A movable seat 405 is sleeved inside the liquid transfer chamber 404 on the outer wall of the lead screw 403, and a piston 406 is provided at the bottom of the movable seat 405. A three-way valve 407 is connected to the bottom of the liquid transfer chamber 404, and a first dropper 408 and a second dropper 409 are respectively provided at both ends of the bottom of the three-way valve 407. The first dropper 408 is located on both sides of the sealing plate 404. The interior of 01 is provided with a slide rail 410, and the surface of the slide rail 410 is slidably connected to a carrier plate 411. The two ends of the carrier plate 411 are rotatably connected to an elastic square tube clamp 413 through a rotating shaft 412. The interior of the elastic square tube clamp 413 is fitted with a cuboid test tube 414. The surface of the elastic square tube clamp 413 is provided with a through hole 415. The outer wall of the second dropper 409 is fitted with a cylindrical test tube 416. The interior of the servo motor 402 is equipped with an angle detection sensor for monitoring the rotation angle of the lead screw 403. The central axes of the through hole 415, the cuboid test tube 414, and the first dropper 408 are on the same straight line. The interior of the detection port 3 is provided with a clamping rubber ring, and the rubber ring is tightly attached to the outer wall of the cuboid test tube 414. The clamping force of the rubber ring on the cuboid test tube 414 is greater than the clamping force of the elastic square tube clamp 413 on the cuboid test tube 414. The specific operation is as follows: The cylindrical test tube 416 is filled with a liquid medium mixed with nano barium sulfate powder. The cylindrical test tube 416 is placed in an ultrasonic vibration device. The powder inside the cylindrical test tube 416 is evenly distributed in the liquid medium by ultrasonic technology. Then, the cover plate 401 is opened to make it stand up. The cylindrical test tube 416 is then fitted onto the outer wall of the second dropper 409. The empty cuboid test tube 414 is fitted into the elastic square tube clamp 413 to be clamped. Then, the cuboid test tube 414 is pushed up so that it slides along the surface of the slide rail 410 through the carrier plate 411, so that the first dropper 408 passes through the through hole 415 and extends into the cuboid test tube 414. Next, the servo motor 402 is started to drive the lead screw 403 to rotate, so that the moving seat 405 carries the piston 406 to rise along the inside of the liquid transfer chamber 404, so that the sample inside the cylindrical test tube 416 is sucked into the liquid transfer chamber 404 through the three-way valve 407. Then the lead screw 403 is reversed to make the piston 406 descend along the inside of the liquid transfer chamber 404, thereby injecting the sample inside the liquid transfer chamber 404 into the cuboid test tube 414 through the first dropper 408. The rotation angle of the lead screw 403 is monitored in real time by an angle detection sensor, which can determine the rising distance of the piston 406. The amount of sample drawn can be calculated, that is, when the piston 406 descends and resets, the amount of sample injected into the cuboid test tube 414 can be determined. This allows for precise control of the amount of sample to be tested inside the cuboid test tube 414, so as to prevent the sample amount from being too small or too large, which would affect the particle size detection results. Then remove the cylindrical test tube 416 and slowly cover it with the sealing plate 401. When the sealing plate 401 is covered, the sliding plate 411 carries the cuboid test tube 414 down the surface of the slide rail 410 under the action of gravity. When the sealing plate 401 rotates, the elastic square tube clamp 413 carries the cuboid test tube 414 through the rotating shaft 412 under the action of gravity, keeping it perpendicular to the horizontal line. After the sealing plate 401 is covered, the cuboid test tube 414 enters the installation cavity 2 and is inserted into the detection port 3. In this method, the powder particles in the sample undergo Brownian motion in a liquid medium. Then, the laser system in the body 1 irradiates the powder particles in the liquid medium to generate scattered light. The hydrodynamic diameter of the particles is calculated based on the intensity fluctuation of the generated scattered light, thereby measuring the particle size in the sample. This method is called dynamic light scattering technology, abbreviated as DLS. After the particle size detection is completed, the sealing plate 401 is opened manually. At this time, because the clamping force of the rubber ring on the square test tube 414 is greater than the clamping force of the elastic square tube clamp 413 on the square test tube 414, the square test tube 414 is disengaged from the inside of the elastic square tube clamp 413. That is, after the sealing plate 401 is opened, the square test tube 414 is located in the detection port 3, and it can be manually removed. Based on the above description, this invention, through the cooperation of servo motor 402, lead screw 403, liquid transfer chamber 404, piston 406, and angle detection sensor, can accurately monitor the rotation angle of lead screw 403 to determine the moving distance of piston 406, thereby realizing quantitative aspiration and injection of sample liquid. This solves the problems of difficulty in accurately controlling the injection volume and large liquid level comparison errors during manual transfer, ensuring that the sample volume in the cuboid test tube 414 meets the optimal detection requirements and improving the accuracy of particle size detection results. At the same time, the clamping force design of the rubber ring and elastic square tube clamp 413 inside the detection port 3 not only ensures the stability of the test tube during the detection process, but also allows for easy disengagement from the clamp when the sealing plate 401 is opened, facilitating manual handling of the test tube and simplifying the operation process.

[0021] like Figures 1-6As shown, a first electromagnetic plate is provided on one side of the slide rail 410 inside the cover plate 401, and a second electromagnetic plate is fixed inside the cover plate 401. When energized, the cover plate 401 and the slide rail 410 repel each other through the second electromagnetic plate and the first electromagnetic plate. After the second electromagnetic plate is energized, the slide rail 410 extends outward from inside the cover plate 401 under the repulsive force. The outer wall of the liquid transfer chamber 404 is connected to a water injection pipe 5 through a one-way valve. A residual liquid recovery assembly 6 is provided on one side of the inner side of the installation chamber 2. The residual liquid recovery assembly 6 includes an electric push rod 601, and a bracket 602 is fixed to the movable rod end of the electric push rod 601. Recovery pipes 603 are fixed through the top two sides of the bracket 602. A rubber sealing sleeve 604 is provided at one end of the recovery pipe 603, and a corrugated pipe 605 is connected to the other end of the recovery pipe 603. The end of the corrugated pipe 605 away from the recovery pipe 603 is connected to a recovery pool. The specific operation is as follows: the water injection pipe 5 has a flexible structure to adapt to the opening and closing rotation of the cover plate 401. After the cover plate 401 is closed and the cube test tube 414 is inserted into the detection port 3, the second electromagnetic plate is energized so that it is like the first electromagnetic plate and repulses it. This causes the slide rail 410 to extend outward from the inside of the cover plate 401 under the action of repulsion, so that the cube test tube 414 is further inserted into the detection port 3 to complete the loading operation. After the slide rail 410 extends, the height of the gap between the elastic square tube clamp 413 and the carrier plate 411 decreases, so that the gap is at the height of the first dropper 408, the second dropper 409 and the recovery tube 603. At this time, the electric push rod 601 pushes the bracket 602 to extend the recovery tube 603, so that the rubber sealing sleeve 604 is fitted onto the ends of the first dropper 408 and the second dropper 409, wherein the corrugated tube 605 extends and retracts synchronously with the recovery tube 603. Then, a water pump is used to inject cleaning solution into the water injection pipe 5. The cleaning solution enters the liquid transfer chamber 404 and passes through the first dropper 408 and the second dropper 409, thereby rinsing the first dropper 408, the second dropper 409 and the liquid transfer chamber 404 to remove residual sample liquid. The rinsing solution is then recovered to the recovery pool through the recovery pipe 603 and the corrugated pipe 605 for further processing. Furthermore, the rinsing operation of the first dropper 408, the second dropper 409, and the inside of the transfer chamber 404 is carried out simultaneously with the particle size detection operation of the sample particles inside the cuboid test tube 414, so that the next sample liquid can be transferred after the sealing plate 401 is opened. After the rinsing operation is completed, the recovery tube 603 retracts, and a single second electromagnetic plate or the first electromagnetic plate is energized, causing the two to attract each other due to their different shapes, thereby causing the slide rail 410 to retract. At this time, after the cover plate 401 is opened and erected, the central axis of the cuboid test tube 414 coincides with the central axis of the first dropper 408, so as to carry out subsequent sample liquid transfer and injection operations. Based on the above description, this invention utilizes the principle of like poles repelling each other in electromagnetic plates. When energized, it drives the slide rail 410 to extend, allowing the cuboid test tube 414 to be more securely inserted into the detection port 3 to complete the loading, ensuring the reliability of the detection process. The residual liquid recovery component 6, through structures such as the electric push rod 601, recovery tube 603, and corrugated tube 605, can simultaneously flush the liquid transfer chamber 4 and the dropper during detection, promptly removing residual sample liquid, avoiding cross-contamination, and the flushing liquid can be efficiently recovered and treated. At the same time, this flushing process runs parallel to the detection operation, without additional waiting, improving the continuity and overall efficiency of the detection, and reducing the complexity of operation.

[0022] In summary, when using the new nano-barium sulfate powder particle size detection device, firstly, the cylindrical test tube 416 is fitted onto the outer wall of the second dropper 409, and the empty cuboid test tube 414 is fitted into the elastic square tube clamp 413 to be clamped by it. Then, the cuboid test tube 414 is pushed up so that it slides along the surface of the slide rail 410 through the carrier plate 411, so that the first dropper 408 passes through the through hole 415 and extends into the cuboid test tube 414. Next, the servo motor 402 is started to drive the lead screw 403 to rotate, so that the moving seat 405 carries the piston 406 to rise along the inside of the liquid transfer chamber 404, so that the sample inside the cylindrical test tube 416 is sucked into the liquid transfer chamber 404 through the three-way valve 407. Then the lead screw 403 is reversed to make the piston 406 descend along the inside of the liquid transfer chamber 404, thereby injecting the sample inside the liquid transfer chamber 404 into the cuboid test tube 414 through the first dropper 408. The rotation angle of the lead screw 403 is monitored in real time by an angle detection sensor, which can determine the rising distance of the piston 406. The amount of sample drawn can be calculated, that is, when the piston 406 descends and resets, the amount of sample injected into the cuboid test tube 414 can be determined. This allows for precise control of the amount of sample to be tested inside the cuboid test tube 414, so as to prevent the sample amount from being too small or too large, which would affect the particle size detection results. Then remove the cylindrical test tube 416 and slowly cover it with the sealing plate 401. When the sealing plate 401 is covered, the sliding plate 411 carries the cuboid test tube 414 down the surface of the slide rail 410 under the action of gravity. When the sealing plate 401 rotates, the elastic square tube clamp 413 carries the cuboid test tube 414 through the rotating shaft 412 under the action of gravity, keeping it perpendicular to the horizontal line. After the sealing plate 401 is covered, the cuboid test tube 414 enters the installation cavity 2 and is inserted into the detection port 3. After the particle size detection is completed, the sealing plate 401 is opened manually. At this time, because the clamping force of the rubber ring on the square test tube 414 is greater than the clamping force of the elastic square tube clamp 413 on the square test tube 414, the square test tube 414 is disengaged from the inside of the elastic square tube clamp 413. That is, after the sealing plate 401 is opened, the square test tube 414 is located in the detection port 3, and it can be manually removed. After the cover plate 401 is closed and the cube test tube 414 is inserted into the detection port 3, the second electromagnetic plate is energized so that it is like the first electromagnetic plate and repulses it. This causes the slide rail 410 to extend outward from the inside of the cover plate 401 under the action of repulsion, so that the cube test tube 414 is further inserted into the detection port 3 to complete the loading operation. After the slide rail 410 extends, the height of the gap between the elastic square tube clamp 413 and the carrier plate 411 decreases, so that the gap is at the height of the first dropper 408, the second dropper 409 and the recovery tube 603. At this time, the electric push rod 601 pushes the bracket 602 to extend the recovery tube 603, so that the rubber sealing sleeve 604 is fitted onto the ends of the first dropper 408 and the second dropper 409, wherein the corrugated tube 605 extends and retracts synchronously with the recovery tube 603. Then, a water pump is used to inject cleaning solution into the water injection pipe 5. The cleaning solution enters the liquid transfer chamber 404 and passes through the first dropper 408 and the second dropper 409, thereby rinsing the first dropper 408, the second dropper 409 and the liquid transfer chamber 404 to remove residual sample liquid. The rinsing solution is then recovered to the recovery pool through the recovery pipe 603 and the corrugated pipe 605 for further processing. Furthermore, the rinsing operation of the first dropper 408, the second dropper 409, and the inside of the transfer chamber 404 is carried out simultaneously with the particle size detection operation of the sample particles inside the cuboid test tube 414, so that the next sample liquid can be transferred after the sealing plate 401 is opened.

[0023] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A novel material nano-barium sulfate powder particle size detection device, comprising a body (1) and a cover plate assembly (4), characterized in that: The surface of the body (1) is provided with a mounting cavity (2), and the bottom of the inner wall of the mounting cavity (2) is provided with a detection port (3). The cover plate assembly (4) includes a cover plate (401) hinged to the top side of the mounting cavity (2), and a servo motor (402) is fixed on the upper inner side of the cover plate (401). A lead screw (403) is provided at the bottom end of the servo motor (402), and a liquid transfer chamber (404) is sleeved on the outside of the bottom end of the lead screw (403). A movable seat sleeve (405) is sleeved on the outer wall of the lead screw (403) inside the liquid transfer chamber (404), and a piston (406) is provided at the bottom of the movable seat sleeve (405). The bottom of the liquid transfer chamber (404) is connected to a piston. A three-way valve (407) is provided at both ends of the bottom of the three-way valve (407) with a first dropper (408) and a second dropper (409). The first dropper (408) has a slide rail (410) passing through the inside of the cover plate (401) on both sides. The slide rail (410) is slidably connected to a carrier plate (411). The two ends of the carrier plate (411) are rotatably connected to an elastic square tube clamp (413) through a rotating shaft (412). The elastic square tube clamp (413) is fitted with a square test tube (414) inside. The surface of the elastic square tube clamp (413) is provided with a through hole (415). The outer wall of the second dropper (409) is fitted with a cylindrical test tube (416).

2. The particle size detection device for novel nano-barium sulfate powder according to claim 1, characterized in that: The servo motor (402) is equipped with an angle detection sensor for monitoring the rotation angle of the lead screw (403), and the central axes of the through hole (415), the cuboid test tube (414), and the first dropper (408) are on the same straight line.

3. The particle size detection device for novel nano-barium sulfate powder according to claim 1, characterized in that: The inside of the detection port (3) is provided with a clamping rubber ring, and the rubber ring is in close contact with the outer wall of the cuboid test tube (414).

4. The particle size detection device for novel nano-barium sulfate powder according to claim 3, characterized in that: The clamping force of the rubber ring on the solid test tube (414) is greater than that of the elastic square tube clamp (413) on the solid test tube (414).

5. The particle size detection device for novel nano-barium sulfate powder according to claim 1, characterized in that: The slide rail (410) is provided with a first electromagnetic plate on one side inside the cover plate (401), and the cover plate (401) is used to fix a second electromagnetic plate inside.

6. The particle size detection device for novel nano-barium sulfate powder according to claim 5, characterized in that: When energized, the cover plate (401) and the slide rail (410) repel each other through the second electromagnetic plate and the first electromagnetic plate, and the slide rail (410) extends outward from inside the cover plate (401) under the action of repulsion after the second electromagnetic plate is energized.

7. The particle size detection device for novel nano-barium sulfate powder according to claim 1, characterized in that: The outer wall of the liquid transfer chamber (404) is connected to a water injection pipe (5) via a one-way valve, and a residual liquid recovery assembly (6) is provided on one side of the inner side of the installation chamber (2).

8. The particle size detection device for novel nano-barium sulfate powder according to claim 7, characterized in that: The residual liquid recovery assembly (6) includes an electric push rod (601), and a bracket (602) is fixed to the movable end of the electric push rod (601).

9. The particle size detection device for novel nano-barium sulfate powder according to claim 8, characterized in that: The top two sides of the bracket (602) are fixed with recycling tubes (603), and one end of the recycling tube (603) is provided with a rubber sealing sleeve (604).

10. The particle size detection device for novel nano-barium sulfate powder according to claim 9, characterized in that: The other end of the recycling pipe (603) is connected to a corrugated pipe (605), and the end of the corrugated pipe (605) away from the recycling pipe (603) is connected to a recycling pool.

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