Automatic grading device for silicon carbide micro powder production and method thereof

Abstract

The invention provides an automatic grading device for silicon carbide micro-powder production and a method thereof, and relates to the technical field of silicon carbide micro-powder production. The automatic grading device for silicon carbide micro powder production comprises a separation barrel, the inner bottom of the separation barrel is fixedly connected with a feeding shell, and the bottom of the separation barrel is connected with a feeding assembly. According to the device, two induced draft fans are started, the two induced draft fans conduct air draft on the first classification pipe and the second classification pipe through a gathering pipeline, the first classification pipe sucks thin silicon carbide micro powder in the separation barrel, and thick silicon carbide micro powder continuously falls off and is sucked by the second classification pipe; according to the silicon carbide micro-powder processing device, fine silicon carbide micro-powder and coarse silicon carbide micro-powder enter the two collecting boxes respectively, the valve is opened regularly, the silicon carbide micro-powder is discharged through the discharging pipe, the fine silicon carbide micro-powder and the coarse silicon carbide micro-powder can be automatically separated and collected, and the processing efficiency of the silicon carbide micro-powder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of silicon carbide micropowder production, in particular to an automatic grading device and method for silicon carbide micropowder production. Background Art

[0002] Silicon carbide powder refers to micron-sized silicon carbide powder that is ultra-finely crushed and graded using JZFZ equipment. Silicon carbide powder is mainly 1200# and 1500#. Since silicon carbide powder is mainly used in the abrasive industry, there are special requirements for the classification of the powder. There cannot be large particles in the powder. Therefore, in order to meet international and domestic product requirements, JZF grading equipment is generally used in production for high-precision classification. Domestic silicon carbide powder is mainly black silicon carbide powder and green silicon carbide powder.

[0003] Silicon carbide micropowder needs to be graded after production. Some traditional grading devices generally perform simple filtration through a filter screen, and require manual regular cleaning of coarser silicon carbide micropowder, which undoubtedly reduces the processing efficiency of silicon carbide micropowder. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic grading device and method for producing silicon carbide micropowder, which solves the defects and deficiencies in the prior art.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic grading device for silicon carbide micropowder production, comprising a separation cylinder, the inner bottom of the separation cylinder is fixedly connected to a feeding shell, the bottom of the separation cylinder is connected to a feeding assembly, the top outer surface of the feeding shell is connected to a plurality of return pipes arranged in an annular array, the outer surface of the separation cylinder is provided with two groups of through openings arranged up and down, the through openings located at the top are all connected to a first grading tube, a plurality of the first grading tubes are commonly connected to a first annular tube, the through openings located at the bottom are all connected to a second grading tube, a plurality of the second grading tubes are commonly connected to a second annular tube, the first annular tube and the second annular tube are both connected to a extraction assembly, an upper top plate is installed on the top of the separation cylinder, a rotating gear ring is rotatably connected to the lower surface of the upper top plate, a plurality of scraper plates are connected to the lower surface of the rotating gear ring, and a power assembly for driving the rotating gear ring to rotate is provided on the upper surface of the upper top plate.

[0008] Preferably, the feeding assembly includes a first servo motor fixedly connected to the bottom of the separation cylinder, the output shaft of the first servo motor extends to the interior of the feeding shell and is fixedly connected to a conveying auger, the top of the conveying auger is rotatably connected to the inner top of the feeding shell, and the bottom outer surface of the feeding shell is provided with a plurality of return ports arranged in a circular array.

[0009] Preferably, filter screens are provided inside the two groups of vertically arranged through openings, and the aperture of the filter screen located at the upper part is smaller than the aperture of the filter screen located at the lower part.

[0010] Preferably, the extraction component includes a collecting pipe, the end of the collecting pipe is connected to a collecting box, the interior of the collecting box is fixedly connected to a separation net, the other end of the collecting box is fixedly connected to a first air duct, the end of the first air duct is fixedly connected to an induced draft fan, the outlet of the induced draft fan is fixedly connected to a second air duct, the bottom of the collecting box is fixedly connected to a discharge pipe, and a valve is provided on the surface of the discharge pipe.

[0011] Preferably, the power assembly includes a second servo motor fixedly connected to the upper surface of the upper top plate, the output shaft of the second servo motor extends to the bottom of the upper top plate and is fixedly connected to a rotating gear, and the rotating gear is meshed with a rotating gear ring.

[0012] Preferably, a feed hopper is provided above the upper top plate, a feed pipe is fixedly connected to the bottom of the feed hopper, and the feed pipe is fixedly connected to the upper top plate and extends to the interior of the separation cylinder.

[0013] Preferably, the plurality of scraper plates are arranged in a circular array, and the outer surface of the scraper plates is in contact with the inner surface of the separation cylinder.

[0014] An automatic grading method for producing silicon carbide micropowder, the grading method comprising the following steps:

[0015] S1. Put the produced silicon carbide powder into the feed hopper, which enters the interior of the separation cylinder through the feed pipe, and the silicon carbide powder falls down due to gravity;

[0016] S2. At the same time, two induced draft fans are started. The two induced draft fans exhaust air to the first classification tube and the second classification tube through the collecting pipe. The first classification tube absorbs the finer silicon carbide micropowder in the separation tube, and the coarser silicon carbide micropowder continues to fall and is absorbed by the second classification tube, so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder enter the two collection boxes respectively. The valve is opened regularly to discharge the silicon carbide micropowder through the discharge pipe;

[0017] S3, part of the silicon carbide powder that is not sucked away falls to the bottom of the separation cylinder, enters the interior of the feeding shell through the return port, and at the same time, the first servo motor is started to drive the conveying auger to feed upward, and the material is discharged from the return pipe;

[0018] S4, regularly start the second servo motor, and the output shaft of the second servo motor rotates with the rotating gear, so that the rotating gear ring rotates with the scraper plate to scrape the material.

[0019] (III) Beneficial effects

[0020] The present invention provides an automatic grading device and method for producing silicon carbide micropowder.

[0021] Beneficial effects:

[0022] The present invention starts two induced draft fans, which exhaust air to the first classification tube and the second classification tube through a collecting pipe. The first classification tube absorbs the finer silicon carbide micropowder in the separation tube, and the coarser silicon carbide micropowder continues to fall and is absorbed by the second classification tube, so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder enter two collecting boxes respectively, and the valve is opened regularly to discharge the silicon carbide micropowder through a discharge pipe, so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder can be automatically separated and collected, thereby improving the processing efficiency of the silicon carbide micropowder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a front view structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the upper top plate structure of the present invention;

[0027] Figure 5 For the present invention Figure 3 -A is a partial enlarged schematic diagram;

[0028] Figure 6 For the present invention Figure 3 -A partial enlarged schematic diagram of B.

[0029] Among them, 1. separation cylinder; 2. feeding shell; 3. first servo motor; 4. conveying auger; 5. return port; 6. return pipe; 7. through port; 8. first classification pipe; 9. second classification pipe; 10. first annular pipe; 11. second annular pipe; 12. aggregation pipe; 13. collection box; 14. separation net; 15. discharge pipe; 16. induced draft fan; 17. upper top plate; 18. rotating gear ring; 19. second servo motor; 20. rotating gear; 21. scraper plate; 22. feed hopper. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figure 1-6 As shown, an embodiment of the present invention provides an automatic grading device and method for producing silicon carbide micropowder, comprising a separation cylinder 1, a feeding shell 2 is fixedly connected to the inner bottom of the separation cylinder 1, a feeding assembly is connected to the bottom of the separation cylinder 1, and the feeding assembly comprises a first servo motor 3 fixedly connected to the bottom of the separation cylinder 1, an output shaft of the first servo motor 3 extends to the inside of the feeding shell 2 and is fixedly connected to a conveying auger 4, the top of the conveying auger 4 is rotatably connected to the inner top of the feeding shell 2, and a plurality of return ports 5 arranged in a circular array are provided on the outer surface of the bottom of the feeding shell 2;

[0033] The top outer surface of the feeding shell 2 is connected to a plurality of return pipes 6 arranged in an annular array. The outer surface of the separation cylinder 1 is provided with two groups of through openings 7 arranged up and down. The two groups of through openings 7 arranged up and down are both provided with filter screens. The aperture of the filter screen located at the top is smaller than the aperture of the filter screen located at the bottom. The through openings 7 located at the top are all connected to the first classification pipe 8. The plurality of first classification pipes 8 are commonly connected to the first annular pipe 10. The through openings 7 located at the bottom are all connected to the second classification pipe 9. The plurality of second classification pipes 9 are commonly connected to the second annular pipe 10. The first annular tube 11, the first annular tube 10 and the second annular tube 11 are both connected to an extraction assembly, the extraction assembly includes a collection pipe 12, the end of the collection pipe 12 is connected to a collection box 13, the interior of the collection box 13 is fixedly connected to a separation net 14, the other end of the collection box 13 is fixedly connected to a first air duct, the end of the first air duct is fixedly connected to an induced draft fan 16, the outlet of the induced draft fan 16 is fixedly connected to a second air duct, the bottom of the collection box 13 is fixedly connected to a discharge pipe 15, and a valve is provided on the surface of the discharge pipe 15;

[0034] An upper plate 17 is installed on the top of the separation cylinder 1, and a rotating gear ring 18 is rotatably connected to the lower surface of the upper plate 17. A plurality of scraper plates 21 are connected to the lower surface of the rotating gear ring 18. A power assembly for driving the rotating gear ring 18 to rotate is provided on the upper surface of the upper plate 17. The power assembly includes a second servo motor 19 fixedly connected to the upper surface of the upper plate 17. The output shaft of the second servo motor 19 extends to the bottom of the upper plate 17 and is fixedly connected to a rotating gear 20, which meshes with the rotating gear ring 18.

[0035] A feed hopper 22 is provided above the upper top plate 17, and a feed pipe is fixedly connected to the bottom of the feed hopper 22. The feed pipe is fixedly connected to the upper top plate 17 and extends to the interior of the separation cylinder 1. A plurality of scraper plates 21 are arranged in a circular array, and the outer surface of the scraper plates 21 fits with the inner surface of the separation cylinder 1.

[0036] An automatic grading method for producing silicon carbide micropowder, the grading method comprising the following steps:

[0037] S1, putting the produced silicon carbide powder into the feed hopper 22, the feed hopper 22 enters the interior of the separation cylinder 1 through the feed pipe, and the silicon carbide powder falls downward due to gravity;

[0038] S2. At the same time, two induced draft fans 16 are started. The two induced draft fans 16 exhaust air from the first classification tube 8 and the second classification tube 9 through the collecting pipe 12. The first classification tube 8 absorbs the finer silicon carbide micropowder in the separation tube 1, and the coarser silicon carbide micropowder continues to fall and is absorbed by the second classification tube 9, so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder enter the two collecting boxes 13 respectively. The valve is opened regularly to discharge the silicon carbide micropowder through the discharge pipe 15, so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder can be automatically separated and collected, thereby improving the processing efficiency of the silicon carbide micropowder;

[0039] S3, part of the silicon carbide powder that has not been sucked away falls to the bottom of the separation cylinder 1, and enters the interior of the feeding shell 2 through the return port 5, and at the same time, the first servo motor 3 is started to drive the conveying auger 4 to feed upward, and the material is discharged from the return pipe 6;

[0040] S4, periodically start the second servo motor 19, and the output shaft of the second servo motor 19 rotates the rotating gear 20, so that the rotating gear ring 18 rotates with the scraper plate 21 to scrape the material.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic grading device for producing silicon carbide micropowder, comprising a separation cylinder (1), Features: The inner bottom of the separation cylinder (1) is fixedly connected to a feed shell (2), the bottom of the separation cylinder (1) is connected to a feed assembly, the top outer surface of the feed shell (2) is connected to a plurality of return pipes (6) arranged in an annular array, the outer surface of the separation cylinder (1) is provided with two groups of through openings (7) arranged up and down, the through openings (7) located at the top are all connected to a first classification pipe (8), the plurality of first classification pipes (8) are commonly connected to a first annular pipe (10), the through openings (7) located at the bottom are all connected to a A second classification tube (9), a plurality of the second classification tubes (9) are commonly connected to a second annular tube (11), the first annular tube (10) and the second annular tube (11) are both connected to an extraction assembly, an upper top plate (17) is installed on the top of the separation cylinder (1), a rotating gear ring (18) is rotatably connected to the lower surface of the upper top plate (17), a plurality of scraper plates (21) are connected to the lower surface of the rotating gear ring (18), and a power assembly for driving the rotating gear ring (18) to rotate is arranged on the upper surface of the upper top plate (17).

2. An automatic grading device for producing silicon carbide micropowder according to claim 1, Features: The feeding assembly comprises a first servo motor (3) fixedly connected to the bottom of the separation cylinder (1); the output shaft of the first servo motor (3) extends to the interior of the feeding shell (2) and is fixedly connected to a conveying auger (4); the top of the conveying auger (4) is rotatably connected to the inner top of the feeding shell (2); and the bottom outer surface of the feeding shell (2) is provided with a plurality of return ports (5) arranged in a circular array.

3. An automatic grading device for producing silicon carbide micropowder according to claim 1, Features: The two groups of through openings (7) arranged vertically are both provided with filter screens, and the aperture of the filter screen located at the upper part is smaller than the aperture of the filter screen located at the lower part.

4. The automatic grading device for producing silicon carbide micropowder according to claim 1, Features: The extraction component comprises a collecting pipe (12), the end of the collecting pipe (12) is connected to a collecting box (13), the interior of the collecting box (13) is fixedly connected to a separation net (14), the other end of the collecting box (13) is fixedly connected to a first air duct, the end of the first air duct is fixedly connected to an induced draft fan (16), the outlet of the induced draft fan (16) is fixedly connected to a second air duct, the bottom of the collecting box (13) is fixedly connected to a discharge pipe (15), and a valve is provided on the surface of the discharge pipe (15).

5. The automatic grading device for producing silicon carbide micropowder according to claim 1, Features: The power assembly comprises a second servo motor (19) fixedly connected to the upper surface of the upper top plate (17), the output shaft of the second servo motor (19) extending to the bottom of the upper top plate (17) and fixedly connected to a rotating gear (20), and the rotating gear (20) meshes with the rotating gear ring (18).

6. An automatic grading device for producing silicon carbide micropowder according to claim 1, Features: A feed hopper (22) is arranged above the upper top plate (17), and a feed pipe is fixedly connected to the bottom of the feed hopper (22). The feed pipe is fixedly connected to the upper top plate (17) and extends to the interior of the separation cylinder (1).

7. An automatic grading device for producing silicon carbide micropowder according to claim 1, Features: The plurality of scraper plates (21) are arranged in a circular array, and the outer surface of the scraper plates (21) is in contact with the inner surface of the separation cylinder (1).

8. A grading method for an automatic grading device for producing silicon carbide micropowder according to any one of claims 1 to 7, Features: The classification method comprises the following steps: S1, putting the produced silicon carbide micropowder into the feed hopper (22), the feed hopper (22) enters the interior of the separation cylinder (1) through the feed pipe, and the silicon carbide micropowder falls downward due to gravity; S2. At the same time, two induced draft fans (16) are started. The two induced draft fans (16) exhaust air from the first classification tube (8) and the second classification tube (9) through the collecting pipe (12). The first classification tube (8) absorbs the finer silicon carbide micropowder in the separation cylinder (1), and the coarser silicon carbide micropowder continues to fall and is absorbed by the second classification tube (9), so that the finer silicon carbide micropowder and the coarser silicon carbide micropowder enter the two collection boxes (13) respectively. The valve is opened regularly to discharge the silicon carbide micropowder through the discharge pipe (15); S3, part of the silicon carbide powder that has not been sucked away falls to the bottom of the separation cylinder (1), enters the interior of the feeding housing (2) through the return port (5), and at the same time, the first servo motor (3) is started to drive the conveying auger (4) to feed the material upward, and the material is discharged from the return pipe (6); S4, regularly starting the second servo motor (19), the output shaft of the second servo motor (19) drives the rotating gear (20) to rotate, so that the rotating gear ring (18) drives the scraper plate (21) to rotate and scrape the material.

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