Silicon carbide screening device for abrasive paper production

Abstract

The invention discloses a silicon carbide screening device for abrasive paper production, and belongs to the technical field of abrasive paper production equipment.The silicon carbide screening device comprises a base, a feeding mechanism, a screening mechanism, a driving mechanism and a receiving mechanism, the screening mechanism comprises a circular screening frame and a screening net fixedly installed in the circular screening frame, and an annular frame is fixedly installed at the top of the base; a fixing ring is fixedly installed on the outer side of the circular screen frame, and a plurality of connecting springs are fixedly installed between the annular frame and the fixing ring. The feeding mechanism comprises a feeding hopper, a driving motor, a mounting box and two rotating shafts, and the mounting box is fixedly mounted at the bottom of the feeding hopper. By means of the feeding mechanism, silicon carbide materials can be evenly distributed and efficiently scattered, silicon carbide is evenly distributed on the screen, the screening rate is increased, the feeding rate can be automatically adjusted according to the storage amount and the caking degree of the silicon carbide on the screen, the discharging rate is monitored in cooperation with the material receiving mechanism, and the screening efficiency is improved. And the stable screening speed can be conveniently maintained.

Description

Technical Field

[0001] The invention relates to the technical field of sandpaper production equipment, and in particular to a silicon carbide screening device for sandpaper production. Background Art

[0002] According to different abrasive materials, there are many types such as emery paper, artificial emery paper and glass sandpaper. Dry sandpaper is used to polish the surface of wood and bamboo. Water-resistant sandpaper is used to polish the surface of metal or non-metallic workpieces in water or oil. The base paper is all made of unbleached sulfate wood pulp. The paper is strong, wear-resistant, fold-resistant and has good water resistance. Abrasive materials such as glass sand are adhered to the base paper with adhesives such as gum and dried. In the production process of sandpaper, the silicon carbide raw material needs to be ground and screened, and then the ground and screened silicon carbide particles are adhered to the sandpaper through an adhesive.

[0003] Usually, silicon carbide produced in sandpaper is screened by conventional screening equipment, which cannot adjust the screening parameters according to the degree of silicon carbide agglomeration and the actual screening situation, which easily causes silicon carbide to block the screen and affect the screening efficiency. Therefore, we propose a silicon carbide screening device for sandpaper production to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide a silicon carbide screening device for sandpaper production to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A silicon carbide screening device for sandpaper production, comprising: a base, a feeding mechanism, a screening mechanism, a driving mechanism and a receiving mechanism, wherein the screening mechanism comprises: a circular screen frame and a screen mesh fixedly installed in the circular screen frame, an annular frame is fixedly installed on the top of the base, a fixing ring is fixedly installed on the outer side of the circular screen frame, and a plurality of connecting springs are fixedly installed between the annular frame and the fixing ring;

[0007] The feeding mechanism includes: a feeding hopper, a driving motor, an installation box and two rotating shafts, the installation box is fixedly installed at the bottom of the feeding hopper, the rotating shaft is rotatably installed in the installation box, a plurality of stirring blades are fixedly installed on the outer side of the rotating shaft, a transmission gear is fixedly installed on one end of the rotating shaft, a driving shaft is fixedly installed on the output shaft of the driving motor, the bottom end of the driving shaft extends into the installation box and is fixedly installed with a rotating column, a plurality of spiral strips are integrally formed on the outer side of the rotating column, a slide plate is slidably installed in the installation box, a circular hole matching the rotating column is provided on the top of the slide plate, and a spiral groove matching the spiral strip is provided on the inner wall of the circular hole.

[0008] Preferably, L-shaped support plates are fixedly installed on both sides of the circular screen frame, an arc-shaped track is fixedly installed on the top of the L-shaped support plate, the same annular rack is fixedly installed on the bottom of the two arc-shaped tracks, the transmission gear and the annular rack are meshed with each other, the same U-shaped frame is fixedly installed on the top of the two arc-shaped tracks, the drive motor is fixedly installed on the front side of the U-shaped frame, L-shaped support rods are fixedly installed on both sides of the feed hopper, the other end of the two L-shaped support rods is fixedly installed with the same rotating ring, the rotating shaft is rotatably installed in the rotating ring, and the rotating ring is slidably sleeved on the outside of the arc-shaped track.

[0009] Preferably, a support spring and a damper are fixedly installed at the bottom of the slide plate, the bottom ends of the support spring and the damper are fixedly installed on the bottom inner wall of the installation box, and a guide column is fixedly installed in the installation box, the slide plate is slidably sleeved on the outer side of the guide column, the rotating column is rotatably installed in the installation box, two inclined holes are provided on the front and rear sides of the installation box, an inclined plate is slidably installed in the inclined holes, a baffle is fixedly installed on the top of the inclined plate, a square plate is fixedly installed on the side of the inclined plate close to the rotating column, two square grooves are provided on the front and rear sides of the slide plate, and the square plates are slidably installed in the corresponding square grooves;

[0010] V-shaped plates are fixedly installed on both the front and rear sides of the installation box, and the inclined plates are slidably sleeved on the outer sides of the corresponding V-shaped plates;

[0011] The feed hopper includes: a circular funnel, a multi-branch guide tube and a plurality of conical discharge frames, the multi-branch guide tube is connected to the bottom end of the circular funnel, the conical discharge frame is connected to the bottom of the multi-branch guide tube, the baffle is movably abutted against the bottom of the conical discharge frame, and a discharge port is opened at the bottom of the conical discharge frame.

[0012] Preferably, the driving mechanism includes: a rotating motor, a rotating arm, a rotating box and an inner gear ring, the inner gear ring is fixedly installed inside the annular frame, a fixed column is fixedly installed on the top of the base, the rotating arm is rotatably sleeved on the outside of the fixed column, a driven gear is fixedly installed on the bottom of the rotating arm, the rotating motor is fixedly installed on the bottom of the base, a driving gear is fixedly installed on the output shaft of the rotating motor, the driving gear and the driven gear are meshed with each other, and the rotating box is fixedly installed on one end of the rotating arm.

[0013] Preferably, a horizontal axis and a vertical axis are rotatably installed inside the rotating box, a small gear and a large bevel gear are fixedly installed on the vertical axis, the small gear and the internal gear ring are meshed with each other, a small bevel gear and an eccentric wheel are fixedly installed on the horizontal axis, the small bevel gear and the large bevel gear are meshed with each other, an abutment plate is slidably installed in the rotating box, a push plate and a return spring are fixedly installed on the top of the abutment plate, the abutment plate movably abuts against the bottom of the fixed ring, the bottom end of the return spring is fixedly installed on the top inner wall of the rotating box, and the eccentric wheel movably abuts against the bottom of the abutment plate.

[0014] Preferably, a guide frame is fixedly installed on the outer side of the rotating box, an annular guide rail is fixedly installed inside the annular frame, and the guide frame is slidably sleeved on the outer side of the annular guide rail.

[0015] Preferably, the material receiving mechanism includes: a collecting frame, a support plate and a guide frame, the support plate is fixedly installed on the outer side of the fixed column, a triangular plate is fixedly installed on the bottom of the guide frame, a pressure sensor is fixedly installed between the triangular plate and the support plate, a vertical rod is fixedly installed on the bottom of the triangular plate, the vertical rod is slidably installed inside the support plate, a bottom plate is fixedly sleeved on the outer side of the fixed column, and the collecting frame is arranged on the top of the bottom plate.

[0016] Preferably, a controller is fixedly installed on the top of the base, the controller is connected to the pressure sensor, the rotating motor and the driving motor signal, and a collecting hopper is fixedly installed in the circular screen frame.

[0017] The beneficial effects of the present invention are:

[0018] 1. In the present invention, a silicon carbide screening device for sandpaper production is described, which is configured to put silicon carbide to be screened into the top of a feed hopper, and then allow the silicon carbide to enter multiple conical feed frames through a multi-branch guide tube, and be led out from multiple discharge ports so that it is distributed on the top of the screen. At the same time, a rotating motor is started to drive the driving gear to rotate, and the driving gear drives the rotating arm to rotate by meshing with the driven gear, and drives the rotating box, the abutment plate and the pinion to perform synchronous circular motion. The inner gear ring drives the vertical shaft to rotate by meshing with the pinion, and the vertical shaft drives the horizontal shaft to accelerate rotation by meshing with the large bevel gear and the small bevel gear. The horizontal shaft drives two eccentric wheels to rotate, and the eccentric wheel drives the abutment plate to shake up and down by abutting with the abutment plate and cooperating with the reset spring, thereby driving the push plate to perform circular motion and reciprocating up and down. The push plate drives the circular screen frame and the screen inside it to shake in different directions by abutting with the fixed ring, thereby screening silicon carbide through the screen.

[0019] 2. In the present invention, a silicon carbide screening device for sandpaper production is described. By starting a driving motor, the output shaft of the driving motor drives the driving shaft to rotate, and the driving shaft drives the rotating column to rotate synchronously. The rotating column first drives the slide plate to move downward through the cooperation of the spiral strip and the spiral groove, and squeezes the support spring. When the compression force of the support spring is balanced with the rotation resistance of the installation box, the rotating column starts to drive the installation box to rotate, and drives the two rotating shafts and two transmission gears to perform circular motion. The annular rack drives the rotating shaft to rotate in a circular motion while rotating through the meshing with the transmission gear, and drives the stirring blade to perform the same motion, so that the silicon carbide agglomerated on the screen is broken up by the stirring blade to make it evenly distributed, thereby improving the screening efficiency. The installation box drives the feed hopper to rotate, so that multiple conical feeding frames perform circular motion, so that the silicon carbide can be evenly sprinkled on the surface of the screen, avoiding material accumulation and affecting the screening rate.

[0020] 3. In the present invention, the silicon carbide screening device for sandpaper production described above will encounter resistance from silicon carbide when the stirring blade breaks up the silicon carbide, and the more severe the agglomeration of silicon carbide or the more silicon carbide is stored on the screen, the greater the resistance encountered by the stirring blade, and this resistance will directly feed back to the rotation resistance of the installation box, so that the slide plate continues to move downward and squeezes the support spring to balance the resistance. While the slide plate moves downward, it drives the four square plates to move downward, and drives the inclined plate to move downward in contact with the conical discharge frame through the guidance of the inclined hole and the V-shaped plate, so that the opening degree of the discharge port is reduced, thereby slowing down the feeding rate and avoiding material accumulation;

[0021] 4. In the present invention, the silicon carbide screening device for sandpaper production described above, the silicon carbide screened by the screen falls into the guide frame, rolls to the lower right in the guide frame, and falls into the collection frame to realize material collection, and the pressure sensor can sense the material quality in the guide frame, so as to judge the material feeding rate at the screening location, and when it is monitored that the material feeding rate is reduced, the controller controls the rotating motor and the driving motor to accelerate the operation, so as to accelerate the stirring blade to break up the silicon carbide, and at the same time accelerate the vibration frequency of the driving mechanism on the screen, so as to maintain the screening rate at a stable level;

[0022] 5. In the present invention, the silicon carbide screening device for sandpaper production can realize uniform distribution and efficient dispersion of silicon carbide materials through the set feeding mechanism, so that silicon carbide is evenly distributed on the screen, improving the screening rate, and can automatically adjust the feeding rate according to the stock of silicon carbide on the screen and the degree of agglomeration, and cooperate with the receiving mechanism to monitor the discharge rate, so as to facilitate maintaining a stable screening rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the three-dimensional structure of a silicon carbide screening device for sandpaper production proposed by the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of a silicon carbide screening device for sandpaper production proposed by the present invention;

[0025] Figure 3 for Figure 2 A partial enlarged view of the

[0026] Figure 4 for Figure 2 A partial enlarged view of part A;

[0027] Figure 5 for Figure 2 A partial enlarged view of part B;

[0028] Figure 6 for Figure 2 A partial enlarged view of part C in the middle;

[0029] Figure 7 for Figure 6 A partial enlarged view of part D in the middle;

[0030] Figure 8 It is a three-dimensional structural schematic diagram of the feeding mechanism proposed by the present invention;

[0031] Fig. 9 This is a schematic diagram of the three-dimensional structure of the feed hopper and baffle proposed by the present invention;

[0032] Fig.10 It is a three-dimensional structural schematic diagram of the material receiving mechanism proposed by the present invention;

[0033] Fig.11 It is a schematic diagram of a partial three-dimensional structure of the driving mechanism proposed by the present invention;

[0034] Fig.12 It is a partial exploded three-dimensional structural schematic diagram of the feeding mechanism proposed by the present invention;

[0035] Fig.13 It is a partial top view and cross-sectional three-dimensional structural schematic diagram of the feeding mechanism proposed by the present invention;

[0036] Fig.14 This is a schematic side sectional structural diagram of the feed hopper proposed by the present invention.

[0037] In the figure: 1, base; 101, annular frame; 2, circular screen frame; 201, fixing ring; 202, connecting spring; 203, screen; 204, collecting hopper; 3, feeding hopper; 301, circular funnel; 302, multi-branch guide pipe; 303, conical discharge frame; 4, installation box; 401, rotating shaft; 402, stirring blade; 403, transmission gear; 404, annular rack; 405, rotating ring; 406, L-shaped support rod; 5, driving motor; 501, driving shaft; 502, rotating column; 503, spiral strip; 504, U-shaped frame; 505, arc track; 506, L-shaped support plate; 6, rotating box; 601, guide frame; 602, annular guide rail; 603, rotating arm ; 604, driven gear; 605, driving gear; 606, rotating motor; 7, abutment plate; 701, push plate; 702, return spring; 8, vertical axis; 801, small gear; 802, large bevel gear; 803, small bevel gear; 804, horizontal axis; 805, eccentric wheel; 806, inner gear ring; 9, slide plate; 901, support spring; 902, damper; 903, spiral groove; 904, square groove; 905, square plate; 906, inclined plate; 907, V-shaped plate; 10, baffle; 11, fixing column; 1101, bottom plate; 1102, collecting frame; 1103, support plate; 1104, pressure sensor; 1105, triangular plate; 1106, guide frame; 12, controller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1 - Fig.14 A silicon carbide screening device for sandpaper production comprises: a base 1, a feeding mechanism, a screening mechanism, a driving mechanism and a receiving mechanism, the screening mechanism comprises: a circular screen frame 2 and a screen 203 fixedly installed in the circular screen frame 2, an annular frame 101 is fixedly installed on the top of the base 1, a fixing ring 201 is fixedly installed on the outer side of the circular screen frame 2, and a plurality of connecting springs 202 are fixedly installed between the annular frame 101 and the fixing ring 201;

[0040] The feeding mechanism includes: a feeding hopper 3, a driving motor 5, an installation box 4 and two rotating shafts 401. The installation box 4 is fixedly installed at the bottom of the feeding hopper 3. The rotating shaft 401 is rotatably installed in the installation box 4. A plurality of stirring blades 402 are fixedly installed on the outer side of the rotating shaft 401. A transmission gear 403 is fixedly installed on one end of the rotating shaft 401. A driving shaft 501 is fixedly installed on the output shaft of the driving motor 5. The bottom end of the driving shaft 501 extends into the installation box 4 and is fixedly installed with a rotating column 502. A plurality of spiral bars 503 are integrally formed on the outer side of the rotating column 502. A slide plate 9 is slidably installed in the installation box 4. A circular hole matching the rotating column 502 is provided on the top of the slide plate 9, and a spiral groove 903 matching the spiral bar 503 is provided on the inner wall of the circular hole.

[0041] In this embodiment, L-shaped support plates 506 are fixedly installed on both sides of the circular screen frame 2, and an arc-shaped track 505 is fixedly installed on the top of the L-shaped support plate 506. The same annular rack 404 is fixedly installed on the bottom of the two arc-shaped tracks 505, and the transmission gear 403 is meshed with the annular rack 404. The same U-shaped frame 504 is fixedly installed on the top of the two arc-shaped tracks 505, and the drive motor 5 is fixedly installed on the front side of the U-shaped frame 504. L-shaped support rods 406 are fixedly installed on both sides of the feed hopper 3, and the other end of the two L-shaped support rods 406 is fixedly installed with the same rotating ring 405, the rotating shaft 401 is rotatably installed in the rotating ring 405, and the rotating ring 405 is slidably sleeved on the outside of the arc-shaped track 505, thereby rotating and positioning the rotating ring 405.

[0042] In this embodiment, a support spring 901 and a damper 902 are fixedly installed at the bottom of the slide plate 9, and the bottom ends of the support spring 901 and the damper 902 are fixedly installed on the bottom inner wall of the installation box 4, and a guide column is fixedly installed in the installation box 4, and the slide plate 9 is slidably sleeved on the outer side of the guide column to guide the slide plate 9, and the rotating column 502 is rotatably installed in the installation box 4, and the front and rear sides of the installation box 4 are provided with two inclined holes, and inclined plates 906 are slidably installed in the inclined holes, and a baffle 10 is fixedly installed on the top of the inclined plate 906, and a square plate 905 is fixedly installed on the side of the inclined plate 906 close to the rotating column 502, and two square grooves 904 are provided on the front and rear sides of the slide plate 9, and the square plates 905 are slidably installed in the corresponding square grooves 904;

[0043] V-shaped plates 907 are fixedly installed on both the front and rear sides of the installation box 4, and the inclined plates 906 are slidably sleeved on the outer sides of the corresponding V-shaped plates 907, thereby guiding the inclined plates 906;

[0044] The feed hopper 3 includes: a circular funnel 301, a multi-branch guide tube 302 and a plurality of conical discharge frames 303. The multi-branch guide tube 302 is connected to the bottom end of the circular funnel 301, and the conical discharge frame 303 is connected to the bottom of the multi-branch guide tube 302. The baffle 10 is movably abutted against the bottom of the conical discharge frame 303, and a discharge port is provided at the bottom of the conical discharge frame 303.

[0045] In this embodiment, the driving mechanism includes: a rotating motor 606, a rotating arm 603, a rotating box 6 and an inner gear ring 806, the inner gear ring 806 is fixedly installed inside the annular frame 101, a fixed column 11 is fixedly installed on the top of the base 1, the rotating arm 603 is rotatably sleeved on the outer side of the fixed column 11, a driven gear 604 is fixedly installed at the bottom of the rotating arm 603, the rotating motor 606 is fixedly installed at the bottom of the base 1, a driving gear 605 is fixedly installed on the output shaft of the rotating motor 606, the driving gear 605 and the driven gear 604 are meshed with each other, and the rotating box 6 is fixedly installed at one end of the rotating arm 603.

[0046] In this embodiment, a horizontal axis 804 and a vertical axis 8 are rotatably installed inside the rotating box 6, a small gear 801 and a large bevel gear 802 are fixedly installed on the vertical axis 8, the small gear 801 and the inner gear ring 806 are meshed with each other, a small bevel gear 803 and an eccentric wheel 805 are fixedly installed on the horizontal axis 804, the small bevel gear 803 and the large bevel gear 802 are meshed with each other, an abutment plate 7 is slidably installed in the rotating box 6, a push plate 701 and a return spring 702 are fixedly installed on the top of the abutment plate 7, the abutment plate 7 is movably abutted against the bottom of the fixed ring 201, the bottom end of the return spring 702 is fixedly installed on the top inner wall of the rotating box 6, and the eccentric wheel 805 is movably abutted against the bottom of the abutment plate 7.

[0047] In this embodiment, a guide frame 601 is fixedly installed on the outer side of the rotating box 6 , an annular guide rail 602 is fixedly installed inside the annular frame 101 , and the guide frame 601 is slidably sleeved on the outer side of the annular guide rail 602 .

[0048] In this embodiment, the material collecting mechanism includes: a collecting frame 1102, a support plate 1103 and a guide frame 1106. The support plate 1103 is fixedly installed on the outer side of the fixed column 11. A triangular plate 1105 is fixedly installed on the bottom of the guide frame 1106. A pressure sensor 1104 is fixedly installed between the triangular plate 1105 and the support plate 1103. A vertical rod is fixedly installed on the bottom of the triangular plate 1105. The vertical rod is slidably installed inside the support plate 1103. A bottom plate 1101 is fixedly sleeved on the outer side of the fixed column 11, and the collecting frame 1102 is arranged on the top of the bottom plate 1101.

[0049] In this embodiment, a controller 12 is fixedly installed on the top of the base 1 , and the controller 12 is signal-connected with the pressure sensor 1104 , the rotating motor 606 and the driving motor 5 . A collecting hopper 204 is fixedly installed in the circular screen frame 2 .

[0050] In this embodiment, when in use, the silicon carbide to be screened is placed on the top of the feed hopper 3, and then the silicon carbide is passed through the multi-branch guide tube 302 into the multiple conical discharge frames 303, and is led out from the multiple discharge ports so that it is distributed on the top of the screen 203. At the same time, the rotating motor 606 is started to drive the driving gear 605 to rotate. The driving gear 605 drives the rotating arm 603 to rotate by meshing with the driven gear 604, and drives the rotating box 6, the abutment plate 7 and the pinion 801 to perform synchronous circular motion. The inner gear ring 806 drives the vertical shaft 8 to rotate by meshing with the pinion 801. The vertical shaft 8 drives the horizontal shaft 804 to accelerate the rotation through the meshing of the large bevel gear 802 and the small bevel gear 803. The horizontal shaft 804 drives the two eccentric wheels 805 to rotate. The eccentric wheel 805 abuts against the abutment plate 7 and drives the abutment plate 7 to shake up and down with the cooperation of the reset spring 702, thereby driving the push plate 701 to perform a circular motion and shake up and down reciprocatingly. The push plate 701 abuts against the fixing ring 201 to drive the circular screen frame 2 and the screen 203 inside it to shake in different directions, thereby screening silicon carbide through the screen 203. By starting the drive motor 5, the output shaft of the drive motor 5 drives the drive shaft 501 to rotate, and the drive shaft 501 drives the rotating column 502 to rotate synchronously. The rotating column 502 first drives the slide plate 9 to move downward through the cooperation of the spiral bar 503 and the spiral groove 903, and squeezes the support spring 901. When the compression force of the support spring 901 matches the installation box 4, the rotation of the rotating column 502 is accelerated. When the rotation resistance is balanced, the rotating column 502 starts to drive the installation box 4 to rotate, and drives the two rotating shafts 401 and the two transmission gears 403 to perform circular motion. The annular rack 404 drives the rotating shaft 401 to rotate in a circular motion while engaging with the transmission gear 403, and drives the stirring blade 402 to perform the same motion, so that the silicon carbide agglomerated on the screen 203 is broken up by the stirring blade 402 to make it evenly distributed, thereby improving the screening efficiency. The feed hopper 3 is driven to rotate by the installation box 4, so that the multiple conical discharge frames 303 perform circular motion, so that the silicon carbide can be evenly sprinkled on the surface of the screen 203, avoiding material accumulation and affecting the screening rate. When the stirring blade 402 breaks up the silicon carbide, it will be blocked by the silicon carbide. The force is greater, and the more severe the agglomeration of silicon carbide is or the more stock on the screen 203 is, the greater the resistance to the stirring blade 402 is, and this resistance will be directly fed back to the rotation resistance of the installation box 4, so that the slide plate 9 continues to move downward and squeezes the support spring 901 to balance the resistance. While moving downward, the slide plate 9 drives the four square plates 905 to move downward, and guides the inclined plate 906 through the inclined holes and the V-shaped plate 907 to drive the inclined plate 906 to move downward in accordance with the conical discharge frame 303, so that the opening degree of the discharge port is reduced, thereby slowing down the feeding rate and avoiding material accumulation. The silicon carbide screened by the screen 203 falls into the guide frame 1106, rolls to the lower right in the guide frame 1106, and falls into the collection frame 1102 to realize material collection.The pressure sensor 1104 can sense the material quality in the guide frame 1106, so as to judge the material feeding rate at the screening location. When the material feeding rate is detected to be reduced, the controller 12 controls the rotating motor 606 and the driving motor 5 to accelerate the operation, so as to accelerate the stirring blade 402 to break up the silicon carbide, and at the same time accelerate the vibration frequency of the driving mechanism on the screen 203, so as to maintain the screening rate at a stable level.

[0051] The above is a detailed introduction to a silicon carbide screening device for sandpaper production provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A silicon carbide screening device for sandpaper production, characterized in that: include: A base (1), a feeding mechanism, a screening mechanism, a driving mechanism and a receiving mechanism, wherein the screening mechanism comprises: a circular screen frame (2) and a screen (203) fixedly mounted in the circular screen frame (2); an annular frame (101) is fixedly mounted on the top of the base (1); a fixing ring (201) is fixedly mounted on the outer side of the circular screen frame (2); and a plurality of connecting springs (202) are fixedly mounted between the annular frame (101) and the fixing ring (201); The feeding mechanism comprises: a feeding hopper (3), a driving motor (5), an installation box (4) and two rotating shafts (401); the installation box (4) is fixedly installed at the bottom of the feeding hopper (3); the rotating shaft (401) is rotatably installed in the installation box (4); a plurality of stirring blades (402) are fixedly installed on the outer side of the rotating shaft (401); a transmission gear (403) is fixedly installed on one end of the rotating shaft (401); a driving shaft (501) is fixedly installed on the output shaft of the driving motor (5); the bottom end of the driving shaft (501) extends into the installation box (4) and is fixedly installed with a rotating column (502); a plurality of spiral strips (503) are integrally formed on the outer side of the rotating column (502); a slide plate (9) is slidably installed in the installation box (4); a circular hole matching the rotating column (502) is provided on the top of the slide plate (9); a spiral groove (903) matching the spiral strips (503) is provided on the inner wall of the circular hole.

2. The silicon carbide screening device for sandpaper production according to claim 1, characterized in that: L-shaped support plates (506) are fixedly installed on both sides of the circular screen frame (2), and an arc track (505) is fixedly installed on the top of the L-shaped support plate (506). The bottom of the two arc tracks (505) is fixedly installed with the same annular rack (404), and the transmission gear (403) and the annular rack (404) are meshed with each other. The top of the two arc tracks (505) is fixedly installed with the same U-shaped frame (504), and the driving motor (5) is fixedly installed on the front side of the U-shaped frame (504). L-shaped support rods (406) are fixedly installed on both sides of the feed hopper (3), and the other ends of the two L-shaped support rods (406) are fixedly installed with the same rotating ring (405), and the rotating shaft (401) is rotatably installed in the rotating ring (405), and the rotating ring (405) is slidably sleeved on the outer side of the arc track (505).

3. The silicon carbide screening device for sandpaper production according to claim 1, characterized in that: A support spring (901) and a damper (902) are fixedly installed at the bottom of the slide plate (9); the bottom ends of the support spring (901) and the damper (902) are fixedly installed on the bottom inner wall of the installation box (4); a guide column is fixedly installed in the installation box (4); the slide plate (9) is slidably sleeved on the outer side of the guide column; the rotating column (502) is rotatably installed in the installation box (4); two inclined holes are provided on the front and rear sides of the installation box (4); an inclined plate (906) is slidably installed in the inclined holes; a baffle (10) is fixedly installed on the top of the inclined plate (906); a square plate (905) is fixedly installed on the side of the inclined plate (906) close to the rotating column (502); two square grooves (904) are provided on the front and rear sides of the slide plate (9); the square plate (905) is slidably installed in the corresponding square grooves (904); V-shaped plates (907) are fixedly installed on both the front and rear sides of the installation box (4), and the inclined plates (906) are slidably sleeved on the outer sides of the corresponding V-shaped plates (907); The feed hopper (3) comprises: a circular funnel (301), a multi-branch guide tube (302) and a plurality of conical discharge frames (303); the multi-branch guide tube (302) is connected to the bottom end of the circular funnel (301); the conical discharge frame (303) is connected to the bottom of the multi-branch guide tube (302); the baffle (10) is movably abutted against the bottom of the conical discharge frame (303); and a discharge port is provided at the bottom of the conical discharge frame (303).

4. The silicon carbide screening device for sandpaper production according to claim 1, characterized in that: The driving mechanism comprises: a rotating motor (606), a rotating arm (603), a rotating box (6) and an inner gear ring (806); the inner gear ring (806) is fixedly mounted inside the annular frame (101); a fixed column (11) is fixedly mounted on the top of the base (1); the rotating arm (603) is rotatably sleeved on the outer side of the fixed column (11); a driven gear (604) is fixedly mounted on the bottom of the rotating arm (603); the rotating motor (606) is fixedly mounted on the bottom of the base (1); a driving gear (605) is fixedly mounted on the output shaft of the rotating motor (606); the driving gear (605) and the driven gear (604) are meshed with each other; and the rotating box (6) is fixedly mounted on one end of the rotating arm (603).

5. The silicon carbide screening device for sandpaper production according to claim 4, characterized in that: The rotating box (6) is internally rotatably mounted with a horizontal shaft (804) and a vertical shaft (8); a small gear (801) and a large bevel gear (802) are fixedly mounted on the vertical shaft (8); the small gear (801) and the inner gear ring (806) are meshed with each other; a small bevel gear (803) and an eccentric wheel (805) are fixedly mounted on the horizontal shaft (804); the small bevel gear (803) and the large bevel gear (802) are meshed with each other; an abutment plate (7) is slidably mounted in the rotating box (6); a push plate (701) and a return spring (702) are fixedly mounted on the top of the abutment plate (7); the abutment plate (7) is movably abutted against the bottom of the fixed ring (201); the bottom end of the return spring (702) is fixedly mounted on the top inner wall of the rotating box (6); and the eccentric wheel (805) is movably abutted against the bottom of the abutment plate (7).

6. The silicon carbide screening device for sandpaper production according to claim 5, characterized in that: A guide frame (601) is fixedly installed on the outer side of the rotating box (6), an annular guide rail (602) is fixedly installed inside the annular frame (101), and the guide frame (601) is slidably sleeved on the outer side of the annular guide rail (602).

7. The silicon carbide screening device for sandpaper production according to claim 1, characterized in that: The material receiving mechanism comprises: a collecting frame (1102), a supporting plate (1103) and a guiding frame (1106); the supporting plate (1103) is fixedly mounted on the outer side of a fixed column (11); a triangular plate (1105) is fixedly mounted on the bottom of the guiding frame (1106); a pressure sensor (1104) is fixedly mounted between the triangular plate (1105) and the supporting plate (1103); a vertical rod is fixedly mounted on the bottom of the triangular plate (1105); the vertical rod is slidably mounted inside the supporting plate (1103); a bottom plate (1101) is fixedly sleeved on the outer side of the fixed column (11); and the collecting frame (1102) is arranged on the top of the bottom plate (1101).

8. The silicon carbide screening device for sandpaper production according to claim 1, characterized in that: A controller (12) is fixedly mounted on the top of the base (1), and the controller (12) is signal-connected to the pressure sensor (1104), the rotating motor (606) and the driving motor (5). A collecting hopper (204) is fixedly mounted inside the circular screen frame (2).

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