Particle size detection device for high-purity silicon carbide micro powder

Abstract

The invention discloses a high-purity silicon carbide micro-powder granularity detection device, and relates to the technical field of granularity detection. Comprising a sampling test piece, an indwelling sealing piece is installed on the sampling test piece, and the indwelling sealing piece is used for being pasted on a silicon carbide material bag; an automatic sealing piece is mounted on the indwelling sealing piece; the automatic sealing piece is used for preventing leakage; the sampling test piece is provided with a reaming auxiliary piece; an observation piece is mounted on the sampling test piece; the observation piece is located above the reaming auxiliary piece. The automatic sealing piece is more suitable for sampling inspection work of silicon carbide material bags one by one in batches during acceptance inspection of workers in storage and other environments, and can automatically conduct sealing work after piercing sampling; the problems that according to an existing high-purity silicon carbide micro-powder particle size detection device, it is inconvenient to assist in backfilling tested particles into a material bag, waste is likely to be generated, and leakage stoppage after automatic control detection is inconvenient are solved.

Description

Technical Field

[0001] The invention relates to the technical field of particle size detection, in particular to a high-purity silicon carbide micropowder particle size detection device. Background Art

[0002] Silicon carbide micropowder particles are common abrasives and are widely used in precision grinding of non-metallic materials such as glass, ceramics, and jewelry. The manufacturing quality of silicon carbide micropowder is of vital importance. In the manufacturing of silicon carbide micropowder, the crushing particle size needs to be guaranteed. At the same time, when particles exceeding the standard are mixed in during screening and other work, it will directly affect the quality of subsequent applications. The current high-purity silicon carbide micropowder particle size detection device usually uses on-site screens for direct screening and detection when performing micropowder particle size detection in large-scale acceptance and other situations. The screen has a high blockage rate during actual use, which is not convenient for expanding the screen holes to prevent blockage. Traditional screens are also not convenient for assisting in backfilling the tested particles into the bag, which is prone to waste. In large-scale random inspections, it is usually necessary to first unpack the high-purity silicon carbide micropowder bags for sampling, which is inefficient. At the same time, directly using a sampling tube to pierce the bag will cause a sampling rupture, which is likely to cause the bag to leak later and is not convenient for automatic control and plugging.

[0003] To this end, we propose a high-purity silicon carbide powder particle size detection device. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-purity silicon carbide micropowder particle size detection device to solve the problem raised in the above background technology that the current high-purity silicon carbide micropowder particle size detection device is not convenient for assisting in backfilling the tested particles into the material bag, which is prone to waste and is not convenient for automatic control of leak plugging after detection.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-purity silicon carbide micropowder particle size detection device, comprising a sampling test piece, a retention sealing piece installed on the sampling test piece, the retention sealing piece is used to be pasted on the silicon carbide bag; an automatic sealing piece is installed on the retention sealing piece; the automatic sealing piece is used to prevent leakage; a hole expansion auxiliary piece is installed on the sampling test piece; an observation piece is installed on the sampling test piece; the observation piece is located above the hole expansion auxiliary piece; a pushing part is installed on the observation piece; the pushing part is used to backfill silicon carbide; an observation anti-blocking piece is installed inside the sampling test piece; the observation anti-blocking piece is used to recover silicon carbide of standard particle size; the sampling test piece comprises: a sampling tube and an anti-breakage notch, the end of the sampling tube is a beveled edge structure; the anti-breakage notch is opened at the beveled edge of the end of the sampling tube; the anti-breakage notch is used to prevent silicon carbide bag fragments from mixing into silicon carbide particles; a through groove is provided on the side of the sampling tube.

[0006] Preferably, the sampling test piece also includes: a test shell, a screening cylinder and a rubber screening mesh, the test shell is fixedly installed on the sampling tube; the screening cylinder is threadedly connected to the inner side of the test shell; the rubber screening mesh is fixedly installed on the end of the screening cylinder, and the rubber screening mesh is provided with screening micropores; the rubber screening mesh is used to screen silicon carbide micropowder particles; handles are installed on the sampling tube and the test shell.

[0007] Preferably, the retention sealing member includes: a closing ring, an adhesive sheet and a positioning shaft, the closing ring is sleeved on the sampling tube; an adhesive sheet is fixedly installed on the bottom of the closing ring, and glue is provided on the bottom of the adhesive sheet; a positioning shaft is slidably inserted on the closing ring, and a tension spring is sleeved on the positioning shaft; the tension spring on the positioning shaft is connected between the positioning shaft and the closing ring; the adhesive sheet is used to fit on the outside of the silicon carbide bag.

[0008] Preferably, the automatic closing part includes: a closing plate and a torsion spring shaft, the closing plate is slidably fitted on the top of the closing ring; a torsion spring shaft is rotatably plugged into the closing plate, and the torsion spring shaft is fixedly installed on the closing ring; the two ends of the torsion spring on the torsion spring shaft are respectively connected between the closing plate and the closing ring; a socket is provided on the side of the closing plate, and the socket on the side of the closing plate is aligned with the positioning shaft.

[0009] Preferably, the hole expansion auxiliary component includes: a sliding mounting tube and a positioning bolt, the sliding mounting tube is slidably sleeved on the sampling tube; the sliding mounting tube is threadedly connected with a positioning bolt, and the positioning bolt is located in a through groove on the side of the sampling tube; the inner side of the positioning bolt is squeezed and fitted on the surface of the sampling tube; the top end of the sliding mounting tube is glued to the inner side of the rubber screening mesh by glue.

[0010] Preferably, the observation member includes: an observation cover and an observation glass cover, the observation glass cover is fixedly installed on the inner side of the observation cover, and the observation glass cover is made of transparent material; the observation cover is threadedly connected to the test shell; and a pressure relief hole is opened on the observation glass cover.

[0011] Preferably, the pushing part includes: a rotary connecting column and an extrusion block, the rotary connecting column is rotatably sleeved in the middle of the observation glass cover; the extrusion block is fixedly installed on the bottom of the rotary connecting column, and the extrusion block is a sloped structure; the bottom of the extrusion block is an arc-shaped chamfered structure; the extrusion block is located above the rubber screening mesh; the extrusion block is used to axially press a part of the rubber screening mesh; the sliding mounting cylinder is used to radially pull the rubber screening mesh.

[0012] Preferably, the pushing part also includes: a pushing shaft and a closed pushing ball, the pushing shaft is slidably inserted in the middle of the rotary connecting column; the end of the pushing shaft is fixedly installed with a closed pushing ball; the closed pushing ball is a rubber elastic structure; the closed pushing ball is sleeved on the sliding mounting cylinder; the diameter of the closed pushing ball is the same as the diameter of the end of the sampling tube.

[0013] Preferably, the observation anti-obstruction component includes: a collecting hood and a fan casing, the collecting hood is fixedly installed inside the test shell; the inner side of the collecting hood is a sloped structure; the sliding mounting cylinder is slidably inserted in the middle of the collecting hood; the fan casing is fixedly installed on the bottom of the collecting hood, and the collecting hood is connected to the ventilation casing; the bottom of the fan casing is connected to the sliding mounting cylinder through a hose; the hose at the bottom of the fan casing is used to recover silicon carbide; the collecting hood is located below the rubber screening mesh.

[0014] Preferably, the observation anti-obstruction component also includes: an electric fan, which is fixedly installed inside the fan casing through a bracket; the electric fan consists of a motor and an impeller; when the electric fan starts to recycle silicon carbide, it controls the closed push ball to slide and fit to the top of the inner side of the sliding mounting cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The automatic sealing piece used in the present invention can be combined with the retention sealing piece, which is more suitable for environments such as warehousing. When the staff conducts acceptance inspection, they can conduct random inspections on silicon carbide bags in batches. The stacked silicon carbide bags can also be directly penetrated for sampling and testing without the tedious process of unpacking the bags. This structure can automatically perform sealing after penetration and sampling, which can avoid leakage or even further tearing of the punctured position of the bag during subsequent transportation and other work. This structure uses an anti-breakage notch to prevent the entire penetration position from being punctured and cut off when the sampling tube is operated to penetrate the silicon carbide bag, thereby preventing the silicon carbide bag fragments from mixing into the silicon carbide particles and affecting the purity of the silicon carbide.

[0016] The use of hole expansion auxiliary parts can make it easier for workers to directly pierce the material bag for sampling and quickly sample silicon carbide for particle size testing. At the same time, the use of a sliding mounting cylinder in conjunction with an extrusion block can achieve multi-directional pulling of the rubber screening mesh for hole expansion, which can ensure that the mesh holes on the rubber screening mesh can evenly increase the aperture instead of simply stretching it, thereby ensuring the hole expansion effect; the use of a pushing part can assist workers in operating the backfill work of the silicon carbide particles, which can prevent the waste of silicon carbide particles after the test.

[0017] The use of observation anti-obstruction parts can utilize wind power to promote the silicon carbide particles with particle size standards above the rubber screening mesh to pass through the rubber screening mesh. At the same time, after the rubber screening mesh is manually shaken for screening, the floating of particles can be reduced, which can promote a good field of vision for the staff. At the same time, the silicon carbide particles sucked by the negative pressure of this structure can be directly recovered to the inside of the sliding installation cylinder, further reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-purity silicon carbide powder particle size detection device of the present invention; Figure 2 This is a cross-sectional view of the internal structure of a high-purity silicon carbide powder particle size detection device of the present invention; Figure 3 This is a partial structural cross-sectional view of a high-purity silicon carbide powder particle size detection device of the present invention; Figure 4 This is a schematic diagram of the structure of the sampling test piece of the present invention; Figure 5 For the present invention Figure 1 A magnified view of the structure of the middle B region; Figure 6 This is a schematic structural diagram of the automatic closure of the present invention; Figure 7 This is a schematic structural diagram of the hole expansion auxiliary component of the present invention; Figure 8 This is a structural diagram of the pusher portion of the present invention; Figure 9 This is a schematic diagram of the structure of the anti-shielding component of the present invention; Figure 10 For the present invention Figure 2 A magnified view of the structure in region D.

[0019] In the figure: 1. Sampling test piece; 101. Sampling tube; 1011. Anti-breakage notch; 102. Test shell; 103. Screening cylinder; 104. Rubber screening mesh; 2. Retention closure; 201. Closing ring; 202. Adhesive sheet; 203. Positioning shaft; 3. Automatic closure; 301. Closing plate; 302. Torsion spring shaft; 4. Hole expansion auxiliary; 401. Sliding mounting cylinder; 402. Positioning bolt; 5. Observation piece; 501. Observation cover; 502. Observation glass cover; 6. Pushing part; 601. Rotary connecting column; 602. Extrusion block; 603. Pushing shaft; 604. Closed pushing ball; 7. Observation anti-shielding piece; 701. Collection cover; 702. Fan casing; 703. Electric fan. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 10 As shown: The present invention provides a technical solution: a high-purity silicon carbide powder particle size detection device, comprising a sampling test piece 1, a retention sealing piece 2 is installed on the sampling test piece 1, the retention sealing piece 2 is used to stick on the silicon carbide bag; an automatic sealing piece 3 is installed on the retention sealing piece 2; the automatic sealing piece 3 is used to prevent leakage; a hole expansion auxiliary piece 4 is installed on the sampling test piece 1; an observation piece 5 is installed on the sampling test piece 1; the observation piece 5 is located above the hole expansion auxiliary piece 4; and a material pushing part is installed on the observation piece 5. 6; the pushing part 6 is used to backfill silicon carbide; an observation anti-shielding part 7 is installed inside the sampling test piece 1; the observation anti-shielding part 7 is used to recover silicon carbide of standard particle size; the sampling test piece 1 includes: a sampling tube 101 and an anti-breakage notch 1011, and the end of the sampling tube 101 is a beveled edge structure; an anti-breakage notch 1011 is provided at the bevel edge of the end of the sampling tube 101; the anti-breakage notch 1011 is used to prevent the silicon carbide bag fragments from mixing into the silicon carbide particles; a through groove is provided on the side of the sampling tube 101.

[0022] The sampling test piece 1 further includes: a test shell 102, a screening cylinder 103 and a rubber screening mesh 104. The test shell 102 is fixedly mounted on the sampling tube 101; the screening cylinder 103 is threadedly connected to the inner side of the test shell 102; a rubber screening mesh 104 is fixedly mounted on the end of the screening cylinder 103, and the rubber screening mesh 104 is provided with screening micropores; the rubber screening mesh 104 is used to screen silicon carbide micropowder particles; handles are installed on the sampling tube 101 and the test shell 102; the retention closure 2 includes: a sealing ring 201, an adhesive sheet 202 and a positioning The shaft 203 and the sealing ring 201 are sleeved on the sampling tube 101; the adhesive sheet 202 is fixedly installed at the bottom of the sealing ring 201, and the adhesive sheet 202 is provided with glue at the bottom; the positioning shaft 203 is slidably inserted on the sealing ring 201, and the positioning shaft 203 is sleeved with a tension spring; the tension spring on the positioning shaft 203 is connected between the positioning shaft 203 and the sealing ring 201; the adhesive sheet 202 is used to fit the outside of the silicon carbide bag; the automatic sealing part 3 includes: a sealing plate 301 and a torsion spring shaft 302, the sealing plate 301 is slidably fitted on the top of the sealing ring 201 The torsion spring shaft 302 is rotatably connected to the closing plate 301, and the torsion spring shaft 302 is fixedly mounted on the closing collar 201; the two ends of the torsion spring on the torsion spring shaft 302 are respectively connected between the closing plate 301 and the closing collar 201; a hole is provided on the side of the closing plate 301, and the hole on the side of the closing plate 301 is aligned with the positioning shaft 203. The automatic closing member 3 can be used in conjunction with the retention closing member 2, which is more suitable for environments such as warehousing. When the staff conducts batch inspections of silicon carbide bags one by one during acceptance, the stacked silicon carbide bags can also be directly penetrated. Sampling and testing are more flexible and do not require tedious bag unpacking. At the same time, the structure can automatically seal after puncturing and sampling, which can avoid leakage during subsequent transportation and even further tearing of the punctured bag. The structure is more reasonable. At the same time, the structure uses the anti-break notch 1011 to prevent the entire puncture position from being punctured and cut off when the sampling tube 101 is operated to pierce the silicon carbide bag, thereby preventing the silicon carbide bag fragments from mixing into the silicon carbide particles and affecting the purity of the silicon carbide. The anti-break notch 1011 can be kept from being pierced and cut, so that the bag at the puncture point is connected.

[0023] Among them, the reaming auxiliary component 4 includes: a sliding mounting cylinder 401 and a positioning bolt 402, the sliding mounting cylinder 401 is slidably sleeved on the sampling tube 101; the sliding mounting cylinder 401 is threadedly connected with a positioning bolt 402, and the positioning bolt 402 is located in the through groove on the side of the sampling tube 101; the inner side of the positioning bolt 402 is squeezed and fitted on the surface of the sampling tube 101; the top of the sliding mounting cylinder 401 is glued to the inner side of the rubber screening mesh 104; the observation component 5 includes: an observation cover 501 and an observation glass cover 502, the inner side of the observation cover 501 is fixedly installed with an observation glass cover 502, and the observation glass cover 502 is made of transparent material; the observation cover 501 is threadedly connected to the test shell 102; the observation glass cover 50 2 is provided with a pressure relief hole; the pushing part 6 includes: a rotary connecting column 601 and an extrusion block 602, the rotary connecting column 601 is rotatably sleeved in the middle of the observation glass cover 502; the extrusion block 602 is fixedly installed at the bottom of the rotary connecting column 601, and the extrusion block 602 is a sloped structure; the bottom of the extrusion block 602 is an arc-shaped chamfered structure; the extrusion block 602 is located above the rubber screening mesh 104; the extrusion block 602 is used to axially press the rubber screening mesh 104 locally; the sliding mounting cylinder 401 is used to radially pull the rubber screening mesh 104; the use of the reaming auxiliary part 4 can facilitate the staff to directly pierce the sample on the material bag and quickly sample silicon carbide for particle size detection, and at the same time, the sliding mounting cylinder 401 is used to cooperate with the extrusion Block 602 can realize multi-directional pulling of the rubber screening mesh 104 for hole expansion, which can ensure that the mesh holes on the rubber screening mesh 104 can evenly increase the aperture instead of simply stretching, so as to ensure the hole expansion effect. With the elastic material characteristics of the rubber screening mesh 104, the operation is simple, and the test shell 102 can be directly shaken. The silicon carbide particles can be screened and tested on the rubber screening mesh 104. If there are large particles that do not meet the standards, they can be left on the rubber screening mesh 104 and observed through the observation glass cover 502. The staff can rotate and disassemble the observation cover 501 to facilitate the removal of the observation glass cover 502 for cleaning. After the inspection is completed, push the sliding installation cylinder 401 upward to drive the rubber screening mesh 10 4 moves upward to pull the rubber screening mesh 104. At the same time, the extrusion block 602 will stop and squeeze the rubber screening mesh 104, further ensuring that the mesh holes on the rubber screening mesh 104 can be squeezed and expanded, avoiding that the micropores on the rubber screening mesh 104 are only stretched laterally when the middle part of the rubber screening mesh 104 is pushed up by the sliding installation cylinder 401. With the chamfered arc surface at the bottom of the extrusion block 602 and the downward pressure, and the narrow edge of the extrusion block 602, the micropores on the elastic structure of the rubber screening mesh 104 are promoted to elastically expand outward. By utilizing the principle that the rubber screening mesh 104 will be fully pulled outward after being locally compressed, the diameter is increased and the surface blockage rate of the rubber screening mesh 104 is reduced.

[0024] The pushing part 6 also includes: a pushing shaft 603 and a closed pushing ball 604, the pushing shaft 603 is slidably inserted in the middle of the rotary connecting column 601; the end of the pushing shaft 603 is fixedly installed with a closed pushing ball 604; the closed pushing ball 604 is a rubber elastic structure; the closed pushing ball 604 is sleeved on the sliding mounting cylinder 401; the diameter of the closed pushing ball 604 is the same as the diameter of the end of the sampling tube 101, and the pushing part 6 can use the closed pushing ball 604 to realize the closed sliding mounting cylinder 401 top, and at the same time, it can assist the staff in the operation and backfilling of silicon carbide particles, which can prevent the waste of silicon carbide particles after the test. At the same time, the operation is simple and convenient. After the silicon carbide particle detection is completed, the pushing shaft 603 and the closed pushing ball 604 can be pressed down to push the residual silicon carbide particles inside the sliding mounting cylinder 401 into the material bag, and the closed pushing ball 604 can be pushed back and forth multiple times to reduce waste.

[0025] Example 2. On the basis of Example 1, the anti-shielding member 7 is observed to include: a collecting hood 701 and a fan casing 702. The collecting hood 701 is fixedly mounted inside the test shell 102; the inner side of the collecting hood 701 is a sloped structure; the sliding mounting cylinder 401 is slidably plugged into the middle of the collecting hood 701; the fan casing 702 is fixedly mounted on the bottom of the collecting hood 701, and the collecting hood 701 is connected to the fan casing 702; the bottom of the fan casing 702 is connected to the sliding mounting cylinder 401 through a hose; the hose at the bottom of the fan casing 702 is used to recover silicon carbide; the collecting hood 701 is located below the rubber screening mesh 104; the anti-shielding member 7 is observed to include: an electric fan 703, which is fixedly mounted inside the fan casing 702 through a bracket; the electric fan 703 is It consists of a motor and an impeller; when the electric fan 703 starts to recycle silicon carbide, the closed push ball 604 is controlled to slide and fit to the top of the inner side of the sliding mounting cylinder 401. The observation anti-shielding member 7 can use the wind force to promote the silicon carbide particles with particle size standards above the rubber screening mesh 104 to pass through the rubber screening mesh 104. At the same time, after the rubber screening mesh 104 is manually shaken for screening, the floating of particles can be reduced, which can promote a good field of vision for the staff. At the same time, the silicon carbide particles sucked by the negative pressure of this structure can be directly recovered to the inner side of the sliding mounting cylinder 401, further reducing waste. At this time, the silicon carbide particles screened out from the bottom of the rubber screening mesh 104 are collected by the collecting cover 701 and introduced into the inner side of the sliding mounting cylinder 401 through the fan housing 702 for collection.

[0026] The working principle of this embodiment is as follows: First, before the handheld sampling tube 101 is inserted into the silicon carbide bag, the adhesive sheet 202 can be adhered to the upper surface or the upper oblique side of the silicon carbide bag using a strong adhesive; after the operation sampling tube 101 is inserted into the silicon carbide bag, the pushing shaft 603 is pulled outward to drive the closed pushing ball 604 to move to the outside of the top of the sliding mounting cylinder 401 without blocking the sliding mounting cylinder 401. At this time, powder will be inserted into the sampling tube 101, and the operation sampling tube 101 can be tilted downward, and the test shell 102 can be inverted to facilitate the tilting and guiding the discharge of particles. At this time, the silicon carbide particles will naturally exit from the sampling tube 101. 01 inside, guide it to the sliding installation cylinder 401, and then guide it into the screening cylinder 103, that is, above the rubber screening mesh 104. At this time, the closed pushing ball 604 can be pushed down to close the top of the sliding installation cylinder 401. Then the sampling tube 101 can be manually rotated to keep the test shell 102 relatively vertical. When fiddling with the sampling tube 101 as mentioned above, the test shell 102 can be directly shaken at this time. The silicon carbide particles can be screened and tested on the rubber screening mesh 104. If there are large particles that do not meet the standards, they can be left on the rubber screening mesh 104 and observed through the observation glass cover 502. The workers The operator can rotate and disassemble the observation cover 501 to facilitate the removal of the observation glass cover 502 for cleaning. After the inspection is completed, if it is necessary to clean the rubber screening mesh 104, the positioning bolt 402 can be rotated and loosened, and the sliding installation cylinder 401 can be pushed upward to drive the middle part of the rubber screening mesh 104 to move upward and pull the rubber screening mesh 104. At the same time, the squeezing block 602 will stop and squeeze the rubber screening mesh 104, further ensuring that the mesh on the rubber screening mesh 104 can be squeezed and expanded, so as to avoid the rubber screening mesh 104 from being squeezed and expanded when only the middle part of the rubber screening mesh 104 is pushed upward by the sliding installation cylinder 401. The micropores on the rubber screening mesh 104 are only stretched laterally, and the bottom chamfered surface of the extrusion block 602 is matched, and downward pressure is applied, and the edge of the extrusion block 602 is narrow, which promotes the micropores on the elastic structure of the rubber screening mesh 104 to elastically expand outward. The principle that the rubber screening mesh 104 will be fully pulled outward and expanded after being locally compressed is used to increase the diameter, which facilitates the shedding of particles stuck inside. The rotary connecting column 601 can be rotated to drive the extrusion block 602 to slide on the surface of the rubber screening mesh 104, further ensuring the comprehensive expansion of the rubber screening mesh 104 and reducing the surface clogging rate of the rubber screening mesh 104.After the rubber screening mesh 104 is manually shaken for screening, the closed push ball 604 is controlled to slide and fit to the top of the inner side of the sliding mounting cylinder 401, and the silicon carbide discharged from the hose at the bottom of the fan housing 702 is prevented from being pushed to the top of the rubber screening mesh 104 by the wind. The electric fan 703 is started at a low speed for real-time suction to promote the falling of the particles. The pressure relief hole on the glass cover 502 is used for pressure relief. At this time, the silicon carbide particles screened out from the bottom of the rubber screening mesh 104 are collected by the collecting cover 701 and passed through The fan casing 702 is introduced into the inner side of the sliding mounting cylinder 401 for collection, which can prevent a large amount of particles from spreading on the rubber screening mesh 104, because at this time the bottom end of the sampling tube 101 is still inserted into the silicon carbide particle bag, which is usually a woven structure. While being breathable, its deterioration density will not cause leakage of silicon carbide powder particles; after the silicon carbide particle detection is completed, the closed push ball 604 can be lifted up again to not block the top of the sliding mounting cylinder 401, and the rubber screening mesh 104 can be shaken at this time to promote The remaining substandard particles fall back to the sliding mounting cylinder 401. At the same time, silicon carbide particles will remain on the lower part of the sliding mounting cylinder 401. The pushing shaft 603 and the closed pushing ball 604 can be pressed down to push the remaining silicon carbide particles inside the sliding mounting cylinder 401 into the material bag. The closed pushing ball 604 can be pushed back and forth multiple times to reduce waste. When the sampling tube 101 is sampled and the closed collar 201 is pulled out, the closing plate 301 is no longer blocked by the sampling tube 101. Under the pressure of the torsion spring on the torsion spring shaft 302 The torsion spring on the torsion spring shaft 302 has a relatively large torsional force. When the closing plate 301 rotates to abut the side against the positioning shaft 203, the positioning shaft 203 is first squeezed and retracted. The tension spring on the positioning shaft 203 is stretched, and the closing plate 301 can achieve the closed ring 201 set by rotation. As the socket on the closing plate 301 rotates past the positioning shaft 203, the tension spring on the positioning shaft 203 pulls, allowing the positioning shaft 203 to be inserted into the socket on the side of the closing plate 301 for insertion and positioning, ensuring the stability of the sealing.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-purity silicon carbide micropowder particle size detection device, comprising a sampling test piece (1), wherein a retaining sealing piece (2) is installed on the sampling test piece (1), characterized in that: The retention sealing member (2) is used to be attached to the silicon carbide bag; an automatic sealing member (3) is installed on the retention sealing member (2); the automatic sealing member (3) is used to prevent leakage; The sampling test piece (1) is provided with a hole-expanding auxiliary piece (4); the sampling test piece (1) is provided with an observation piece (5); the observation piece (5) is located above the hole-expanding auxiliary piece (4); The observation piece (5) is provided with a pusher (6); the pusher (6) is used for backfilling silicon carbide; an observation anti-shielding piece (7) is provided inside the sampling test piece (1); the observation anti-shielding piece (7) is used for recovering silicon carbide of a particle size that meets the standard; The sampling test piece (1) comprises: a sampling tube (101) and an anti-breakage notch (1011); the end of the sampling tube (101) is a beveled edge structure; the anti-breakage notch (1011) is provided at the beveled edge of the end of the sampling tube (101); the anti-breakage notch (1011) is used to prevent silicon carbide bag fragments from mixing into silicon carbide particles; and a through groove is provided on the side of the sampling tube (101).

2. A high-purity silicon carbide powder particle size detection device according to claim 1, characterized in that: The sampling test piece (1) further comprises: a test shell (102), a screening cylinder (103) and a rubber screening mesh (104); the test shell (102) is fixedly mounted on the sampling tube (101); the screening cylinder (103) is threadedly connected to the inner side of the test shell (102); a rubber screening mesh (104) is fixedly mounted on the end of the screening cylinder (103), and screening micropores are provided on the rubber screening mesh (104); the rubber screening mesh (104) is used for screening silicon carbide micropowder particles; handles are mounted on the sampling tube (101) and the test shell (102).

3. The high-purity silicon carbide powder particle size detection device according to claim 1, characterized in that: The retention sealing member (2) comprises: a sealing ring (201), an adhesive sheet (202) and a positioning shaft (203); the sealing ring (201) is sleeved on the sampling tube (101); the adhesive sheet (202) is fixedly mounted on the bottom of the sealing ring (201), and glue is provided on the bottom of the adhesive sheet (202); the positioning shaft (203) is slidably inserted on the sealing ring (201), and a tension spring is sleeved on the positioning shaft (203); the tension spring on the positioning shaft (203) is connected between the positioning shaft (203) and the sealing ring (201); the adhesive sheet (202) is used to fit on the outside of the silicon carbide bag.

4. A high-purity silicon carbide powder particle size detection device according to claim 3, characterized in that: The automatic sealing member (3) comprises: a sealing plate (301) and a torsion spring shaft (302), wherein the sealing plate (301) is slidably fitted on the top of the sealing collar (201); a torsion spring shaft (302) is rotatably plugged into the sealing plate (301), and the torsion spring shaft (302) is fixedly mounted on the sealing collar (201); two ends of the torsion spring on the torsion spring shaft (302) are respectively connected between the sealing plate (301) and the sealing collar (201); a socket is provided on the side of the sealing plate (301), and the socket on the side of the sealing plate (301) is aligned with the positioning shaft (203).

5. The high-purity silicon carbide powder particle size detection device according to claim 2, characterized in that: The hole expansion auxiliary component (4) comprises: a sliding mounting cylinder (401) and a positioning bolt (402), wherein the sliding mounting cylinder (401) is slidably sleeved on the sampling tube (101); the positioning bolt (402) is threadedly connected to the sliding mounting cylinder (401), and the positioning bolt (402) is located in a through groove on the side of the sampling tube (101); the inner side of the positioning bolt (402) is pressed and fitted on the surface of the sampling tube (101); and the top end of the sliding mounting cylinder (401) is glued to the inner side of the rubber screening mesh (104) by glue.

6. A high-purity silicon carbide powder particle size detection device according to claim 5, characterized in that: The observation member (5) comprises an observation cover (501) and an observation glass cover (502); the observation glass cover (502) is fixedly mounted on the inner side of the observation cover (501), and the observation glass cover (502) is made of a transparent material; the observation cover (501) is threadedly connected to the test shell (102); and a pressure relief through hole is provided on the observation glass cover (502).

7. A high-purity silicon carbide powder particle size detection device according to claim 6, characterized in that: The pushing portion (6) comprises: a rotary connecting column (601) and an extrusion block (602), wherein the rotary connecting column (601) is rotatably sleeved on the middle of the observation glass cover (502); the extrusion block (602) is fixedly mounted on the bottom of the rotary connecting column (601), and the extrusion block (602) is a sloped structure; the bottom of the extrusion block (602) is an arc-shaped chamfered structure; the extrusion block (602) is located above the rubber screening mesh (104); the extrusion block (602) is used to axially press a part of the rubber screening mesh (104); and the sliding mounting cylinder (401) is used to radially pull the rubber screening mesh (104).

8. The high-purity silicon carbide powder particle size detection device according to claim 7, characterized in that: The pushing portion (6) further comprises: a pushing shaft (603) and a closed pushing ball (604); the pushing shaft (603) is slidably inserted into the middle of the rotary connecting column (601); a closed pushing ball (604) is fixedly mounted on the end of the pushing shaft (603); the closed pushing ball (604) is a rubber elastic structure; the closed pushing ball (604) is sleeved on the sliding mounting cylinder (401); the diameter of the closed pushing ball (604) is the same as the diameter of the end of the sampling tube (101).

9. A high-purity silicon carbide powder particle size detection device according to claim 8, characterized in that: The observation anti-shielding member (7) comprises: a collecting hood (701) and a fan housing (702), wherein the collecting hood (701) is fixedly mounted inside the test housing (102); the inner side of the collecting hood (701) is a sloped structure; the sliding mounting cylinder (401) is slidably plugged into the middle of the collecting hood (701); the fan housing (702) is fixedly mounted on the bottom of the collecting hood (701), and the collecting hood (701) is connected to the fan housing (702); the bottom of the fan housing (702) is connected to the sliding mounting cylinder (401) through a hose; the hose at the bottom of the fan housing (702) is used to recover silicon carbide; the collecting hood (701) is located below the rubber screening mesh (104).

10. The high-purity silicon carbide powder particle size detection device according to claim 9, characterized in that: The observation anti-shielding member (7) further comprises: an electric fan (703), the electric fan (703) being fixedly mounted inside the fan housing (702) via a bracket; the electric fan (703) being composed of a motor and an impeller; and when the electric fan (703) is started to recycle silicon carbide, the closed pusher ball (604) is controlled to slide and fit onto the inner top of the sliding mounting cylinder (401).

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