Dense medium shallow slot sorting machine capable of reducing abrasion of quick-wear parts

Abstract

The invention belongs to the technical field of dense-medium shallow-slot sorting machines, and particularly relates to a dense-medium shallow-slot sorting machine capable of reducing abrasion of quick-wear parts, which comprises a machine body, a connecting shaft, a driving chain wheel, a chain and a scraper, sealing boxes are bolted to the two sides of the inner wall of the machine body; supporting sleeves are connected to the two sides of the face, close to the middle of the machine body, of the sealing box in a bolted mode. A sliding column capable of ascending and descending is installed in the supporting sleeve in a sliding mode. The top end of the sliding column is fixedly connected with a supporting plate. The driving sliding column ascends and descends along the supporting sleeve, the supporting plates on the two sides enable the chain to ascend and push the chain to horizontally move towards the driving chain wheel along the supporting plates, so that the chain is vertically aligned with the driving chain wheel, the driving sliding column descends in the supporting sleeve, the supporting plates are driven to descend, and the descending height of the chain is meshed with the descending height of the driving chain wheel. Therefore, the chain loading work of the chain is completed, the maintenance difficulty of workers is reduced, the maintenance efficiency is improved, and the loss caused by production halt is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of heavy medium shallow trough separators, in particular to a heavy medium shallow trough separator capable of reducing wear of vulnerable parts. Background Art

[0002] The heavy medium shallow trough separator is the core device of the coal washing plant. Its main function is to discharge gangue and sort clean coal. It is a heavy medium separation equipment based on the Archimedes principle. It achieves efficient separation through the density difference of materials in the suspension. Light materials such as clean coal float to the top and overflow to be discharged, while heavy materials such as gangue sink to the bottom and are scraped out by the scraper system.

[0003] The existing heavy medium shallow trough separator mainly includes a chain, a scraper, a uniform distribution plate, a vertical inlet and a horizontal inlet. When the coal mineral materials are fed into the separation trough, they are all immersed in the suspension under the action of the adjustable baffle; light materials such as clean coal float on the upper layer, and heavy materials such as gangue sink to the bottom of the trough; and in the sinking process, the light materials mixed with the gangue continue to float after being dispersed due to the action of the upward flowing suspension; under the action of the horizontal flow, the light materials floating on the upper part are discharged from the discharge overflow port to become clean coal products; under the action of the scraper, the heavy materials that sink to the bottom of the trough are discharged from the head chute to become gangue products, completing the separation process.

[0004] When the heavy medium shallow trough separator is working, the gangue will generate resistance to the scraper when the scraper is scraping the gangue, causing the middle part of the scraper to bend elastically, resulting in the two ends of the scraper generating a pulling force toward the middle, causing the chain to generate a lateral force, resulting in the chain jumping and falling off; at this time, the staff needs to manually hang the chain, and due to the weight of the chain and the influence of the scraper, the maintenance operation is more difficult, affecting normal production.

[0005] To this end, the present invention provides a heavy medium shallow trough separator capable of reducing wear on vulnerable parts. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the heavy medium shallow trough sorting machine for reducing the wear of wearing parts described in the present invention includes a machine body; multiple connecting shafts are installed in a uniformly rotating manner inside the machine body; the outer rings at both ends of the connecting shaft are fixedly connected to a driving sprocket; the outer rings of multiple driving sprockets on both sides are provided with chains; a scraper is fixedly connected between the chains on both sides; sealing boxes are bolted on both sides of the inner wall of the machine body; the two ends of the connecting shaft are respectively rotatably connected to the sealing boxes on both sides; support sleeves are bolted on both sides of a side of the sealing box close to the middle of the machine body; two support sleeves are located on both sides of the driving sprocket; a sliding column that can be raised and lowered is slidably installed inside the support sleeve; the top of the sliding column is fixedly connected to a support plate; the support plate is located at the bottom of the chain.

[0008] Preferably, a gear bin is fixedly connected to one side of the top of the support sleeve; the interior of the gear bin is communicated with the interior of the support sleeve; a No. 1 gear is rotatably installed inside the gear bin; the rotating shaft of the No. 1 gear rotates and passes through the outer wall of the gear bin; a No. 1 rack is fixedly connected to the side of the sliding column close to the gear bin; the No. 1 gear is meshed with the No. 1 rack.

[0009] Preferably, baffles inclined upward are fixedly connected to both ends of the support plate.

[0010] Preferably, the sealing box is rotatably mounted with rotating shafts on both sides of the top of one side close to the middle of the body; a pressure arm capable of pressing down is bolted to one end of the rotating shaft close to the middle of the body; a downward pressure sprocket is rotatably mounted on the end of the pressure arm away from the rotating shaft; and the downward pressure sprocket is engaged with the top of the chain.

[0011] Preferably, the outer ring of the end of the rotating shaft close to the inside of the sealing box is fixedly connected to the No. 2 gear; the top of the No. 2 gear is provided with a No. 2 rack meshing with the No. 2 gear; the end of the No. 2 rack close to the middle of the sealing box is fixedly connected to the No. 3 rack; the No. 3 racks on both sides are symmetrically arranged; a driving rod is rotatably installed in the middle of the top surface of the sealing box; the bottom end of the driving rod is fixedly connected to the No. 3 gear; the two sides of the No. 3 gear are respectively meshed with the No. 3 racks on both sides.

[0012] Preferably, a plurality of guide bars are fixedly connected around the inner wall of the second gear; a plurality of guide grooves are opened around one end of the rotating shaft close to the inside of the sealing box; and the guide bars are slidably engaged with the guide grooves.

[0013] Preferably, the outer rings of the No. 3 racks on both sides are provided with limit frames; the limit frames are bolted to the inside of the sealing box.

[0014] Preferably, the outer ring of the rotating shaft is provided with a pair of shaft sleeves; the two shaft sleeves are respectively located on the outer side and the inner side of the sealing box.

[0015] The beneficial effects of the present invention are as follows: 1. A heavy medium shallow trough sorting machine for reducing wear of wearing parts described in the present invention is provided with a support sleeve, a sliding column, a support plate, a No. 1 gear and a No. 1 rack; the No. 1 gear is rotated to cooperate with the No. 1 rack to push the sliding column to rise and fall along the support sleeve, driving the support plate to lift the chain to rise and fall, and the support plates on both sides raise the chain to a height, and the chain between the support plates on both sides rises to above the driving sprocket, pushing the chain to move horizontally along the support plate toward the driving sprocket, so that the chain is vertically aligned with the driving sprocket, and the driving sliding column descends in height inside the support sleeve, driving the support plate to descend in height, so that the chain descends in height and engages with the driving sprocket; thereby completing the chain winding work, reducing the difficulty of maintenance for staff, improving the efficiency of maintenance, and reducing the loss of production stoppage.

[0016] 2. The heavy medium shallow trough sorting machine for reducing the wear of wearing parts described in the present invention is provided with a rotating shaft, a pressure arm and a downward pressure sprocket; the driving shaft rotates, driving the pressure arm to rotate and press downward, the pressure arms on both sides rotate and press toward both sides respectively, driving the downward pressure sprocket to descend in height, the downward pressure sprocket presses down the top of the chain, and the downward pressure sprockets on both sides press down the chains on both sides of the driving sprocket respectively, firmly engaging the chain with the driving sprocket, thereby reducing the possibility of the chain falling and improving the stability of the chain operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the driving sprocket in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the support sleeve, sliding column and supporting plate in the present invention; Figure 4 It is a schematic diagram of the exploded structure of the support sleeve, sliding column and supporting plate in the present invention; Figure 5 It is a schematic cross-sectional view of the support sleeve, sliding column and supporting plate in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the sealing box in the present invention; Figure 7 It is a schematic diagram of the internal structure of the sealing box of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the sealed box in the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the rotating shaft, the pressure arm, the second rack and the third rack in the present invention; Figure 10 It is a structural schematic diagram of the rotating shaft and the second gear in the present invention; Figure 11 Schematic diagram of the structure of the No. 2 rack, No. 3 rack and No. 3 gear in the present invention; In the figure: 1. body; 2. connecting shaft; 3. driving sprocket; 4. chain; 5. scraper; 6. sealing box; 7. supporting sleeve; 8. sliding column; 9. supporting plate; 10. No. 1 gear; 11. No. 1 rack; 12. baffle; 13. rotating shaft; 14. pressure arm; 15. lower pressure sprocket; 16. No. 2 gear; 17. No. 2 rack; 18. No. 3 rack; 19. driving rod; 20. No. 3 gear; 21. convex ring; 22. guide rail; 23. slider; 24. fixing plate; 25. connecting plate; 26. guide bar; 27. guide groove; 28. limit frame; 29. ​​shaft sleeve; 601. box body; 602. sealing cover plate; 603. shaft cylinder. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figures 1 to 3 As shown, a heavy medium shallow trough separator for reducing wear of vulnerable parts according to an embodiment of the present invention comprises a machine body 1; a plurality of connecting shafts 2 are uniformly mounted and rotated inside the machine body 1; a driving sprocket 3 is fixedly connected to the outer rings of both ends of the connecting shaft 2; chains 4 are sleeved on the outer rings of the plurality of driving sprockets 3 on both sides; and a scraper 5 is fixedly connected between the chains 4 on both sides. Sealing boxes 6 are bolted to both sides of the inner wall of the body 1; the two ends of the connecting shaft 2 are rotatably connected to the sealing boxes 6 on both sides; support sleeves 7 are bolted to both sides of the side of the sealing box 6 close to the middle of the body 1; the two support sleeves 7 are located on both sides of the driving sprocket 3; a sliding column 8 that can be raised and lowered is slidably installed inside the support sleeve 7; a support plate 9 is fixed to the top of the sliding column 8; the support plate 9 is located at the bottom of the chain 3; Specifically, a material inlet is provided on one side of the machine body 1, a light material outlet is provided on the other side, and a heavy material outlet is provided at the bottom of the head of the machine body 1; one end of a connecting shaft 2 located at the head of the machine body 1 passes through the side wall of the machine body 1, and a motor is fixedly connected to the top surface of the head of the machine body 1, and the output shaft of the motor is connected to the end of the connecting shaft 2 via a belt drive; The motor drives the connecting shaft 2 through a belt drive, which in turn drives the drive sprocket 3, which in turn drives the chains 4 on both sides to move. The chains 4 then drive multiple scrapers 5 to move. The material inlet enters the machine body 1 and is immersed in the suspension. Light materials such as clean coal float to the upper layer, while heavy materials such as gangue sink to the bottom of the trough. Under the action of horizontal flow, the light materials floating on the upper layer are discharged from the light material outlet as clean coal products. The scrapers 5 push the heavy materials that have sunk to the bottom of the trough out of the heavy material outlet, completing the sorting process. The motor uses a variable frequency control motor; the motor speed is controlled by an industrial computer; the industrial computer is installed with RSLsgix5000 industrial monitoring software, which can be used to establish a communication connection with the PLC through software programming, monitor the operating parameters of the equipment in real time, and automatically or manually adjust the equipment operating parameters; when the amount of gangue in the coal is small, the current value supplied to the PLC through the integrated protector is also low, and the frequency converter is controlled to reduce the frequency of the motor, thereby reducing the motor speed; vice versa; when the amount of gangue is large, the motor speed is relatively increased, and when the amount of gangue is small, the motor speed is reduced, thereby reducing the operating speed of the heavy medium shallow trough separator and avoiding unnecessary wear caused by excessive speed when the amount of gangue is small; The sealed box 6 includes a box body 601 and a sealing cover plate 602; the outer side of the box body 601 is provided with multiple straight slots, and screws are inserted through the straight slots on the outer side of the box body 601 to fix the box body 601 to the inner side wall of the body 1; the outer rings of the box body 601 and the sealing cover plate 602 are evenly provided with multiple through holes, and bolts are provided inside the through holes to fix and lock the sealing cover plate 602 to the box body 601; the middle part of the box body 601 is fixedly connected to the shaft cylinder 603; the middle part of the sealing cover plate 602 is provided with a circular hole with the same inner diameter as the shaft cylinder 603; the end of the connecting shaft 2 passes through the circular hole in the middle of the sealing cover plate 602, and the end of the connecting shaft 2 is rotatably connected to the inner wall of the shaft cylinder 603; A sliding hole is provided in the middle of the top surface of the support sleeve 7. A crossbar is fixed to the outer wall of the middle portion of the support sleeve 7, and the crossbar is bolted to the sealing cover plate 602 of the sealing box 6 by bolts. The sliding column 8 is slidably installed in the sliding hole of the support sleeve 7, and the sliding column 8 can be raised and lowered. When the chains 4 on both sides drive the scrapers 5 to push the heavy materials that have sunk to the bottom of the trough, the gangue creates resistance on the scrapers 5, causing the middle part of the scrapers 5 to bend elastically, resulting in a pulling force toward the middle at both ends of the scrapers 5, causing the chains 4 to generate a side force, causing the chains 4 to fall off the drive sprocket 3; After the chain 4 falls off from the driving sprocket 3, the chain 4 will fall to the top surface of the supporting plate 9, which will lift the chain 4 and prevent it from falling further, thereby reducing the distortion of the scraper 5. At this time, the staff drives the slide column 8 to rise inside the support sleeve 7, pushes the support plate 9 to rise, and the support plates 9 on both sides raise the chain 4. The chain 4 between the support plates 9 on both sides rises to above the drive sprocket 3. Afterwards, the staff pushes the chain 4 to move horizontally along the support plate 9 toward the drive sprocket 3, so that the chain 4 is vertically aligned with the drive sprocket 3. Finally, the driving slide column 8 descends inside the support sleeve 7, driving the support plate 9 to descend, so that the chain 4 descends and engages with the drive sprocket 3; thereby completing the chain-up work of the chain 4, reducing the difficulty of maintenance for the staff, improving the efficiency of maintenance, and reducing the loss of production stoppage.

[0021] Further, such as Figures 3 to 5 As shown, a gear compartment is fixedly connected to one side of the top of the support sleeve 7; the interior of the gear compartment is communicated with the interior of the support sleeve 7; a number one gear 10 is rotatably mounted inside the gear compartment; the rotating shaft of the number one gear 10 rotates and penetrates the outer wall of the gear compartment; a number one rack 11 is fixedly connected to the side of the slide column 8 near the gear compartment; the number one gear 10 is meshed with the number one rack 11; Specifically, a vertical groove is formed on the side of the slide column 8 close to the gear compartment, and the first gear 11 is fixed inside the vertical groove; a rubber ring for anti-slip fixation is provided between the rotating shaft of the first gear 10 and the side wall of the gear compartment, and a hexagonal head is provided on the end of the rotating shaft of the first gear 11; When the chain 4 falls to the top surface of the support plate 9, the staff uses a wrench to rotate the No. 1 gear 10, and cooperates with the No. 1 rack 11 to push the slide column 8 to rise and fall along the support sleeve 7, driving the support plate 9 to lift the chain 4 to rise and fall, thereby realizing the chain 4 winding work and reducing the difficulty of chain 4 winding.

[0022] Further, such as Figures 3 to 5 As shown, both ends of the support plate 9 are fixed with baffles 12 inclined upward; Specifically, by arranging upwardly inclined baffles 12 at both ends of the support plate 9, it is ensured that the chain 4 can be accurately lifted by the support plate 12 after falling off from the driving sprocket 3; at the same time, it effectively avoids the chain 4 from falling after being lifted by the support plate 12.

[0023] In some embodiments, such as Figure 2 、 Figures 6 to 9 As shown, a rotating shaft 13 is rotatably mounted on both sides of the top of one side of the sealing box 6 close to the middle of the body 1; a pressing arm 14 capable of pressing downward is bolted to one end of the rotating shaft 13 close to the middle of the body 1; a pressing sprocket 15 is rotatably mounted on the end of the pressing arm 14 away from the rotating shaft 13; the pressing sprocket 15 is meshed with the top of the chain 4; Specifically, circular holes are formed on the tops of both sides of the sealing cover plate 602 of the sealing box 6, and the rotating shaft 13 is rotatably mounted inside the circular holes; a regular polygonal head is fixedly connected to one end of the rotating shaft 13 close to the middle of the body 1, and a screw hole is formed on the end of the regular polygonal head away from the rotating shaft 13; a through groove matching the regular polygonal head is formed on the end of the pressure arm 14 close to the rotating shaft 13; a pressure plate is provided on the side of the bottom end of the pressure arm 14 away from the rotating shaft 13, and a screw passes through the pressure plate and is threadedly engaged with the screw hole; The driving shaft 13 rotates, driving the pressure arms 14 to rotate and press downward. The pressure arms 14 on both sides rotate and press downward to both sides respectively, driving the pressure sprocket 15 to descend in height. The pressure sprocket 15 presses down the top of the chain 4. The pressure sprockets 15 on both sides press down the chains 4 on both sides of the driving sprocket 3 respectively, firmly engaging the chains 4 with the driving sprocket 3, thereby reducing the possibility of the chain 4 falling off and improving the stability of the chain 4 operation.

[0024] Further, such as Figures 7 to 11 As shown, the outer ring of one end of the rotating shaft 13 near the inside of the sealed box 6 is fixedly connected to a No. 2 gear 16; a No. 2 rack 17 meshing with the No. 2 gear 16 is provided on the top of the No. 2 gear 16; a No. 3 rack 18 is fixedly connected to one end of the No. 2 rack 17 near the middle of the sealed box 6; the No. 3 racks 18 on both sides are symmetrically arranged; a driving rod 19 is rotatably mounted on the middle of the top surface of the sealed box 6; the bottom end of the driving rod 19 is fixedly connected to a No. 3 gear 20; the two sides of the No. 3 gear 20 are respectively meshed with the No. 3 racks 18 on both sides; Specifically, a convex ring 21 is fixed to both sides of the second gear 16. The convex ring 21 is surrounded by a plurality of threaded holes. Screws are installed in the internal threads of the threaded holes. The plurality of screws squeeze the outer wall of the rotating shaft 13 to fix and lock the convex ring 21 to the rotating shaft 13, thereby fixing and locking the second gear 16 to the outer ring of the rotating shaft 13. A guide rail 22 is bolted to the top surface of the second rack 17; a slider 23 is slidably mounted on the top of the guide rail 22; a fixing plate 24 is bolted to the top surface of the slider 23; the end of the fixing plate 24 away from the slider 23 is bolted to the inner wall of the sealing box 6; the second rack 17 and the third rack 18 are bolted together by a connecting plate 25; the teeth of the second rack 27 are vertically downward, and the teeth of the two third racks 18 are arranged opposite each other; The driving rod 19 is rotated to drive the No. 3 gear 20 to rotate, and the No. 3 racks 18 on both sides are driven to move away from each other. The No. 3 rack 18 drives the No. 2 rack 17 to move, and the guide rail 22 and the slider 23 are slidably matched to guide the movement of the No. 2 rack 17; the No. 2 rack 17 drives the No. 3 gear 20 to rotate, and drives the rotating shaft 13 to rotate, and drives the pressure arm 14 and the downward pressure sprocket 15 to rotate and press down, and the downward pressure sprocket 15 presses down the top of the chain 4; this not only reduces the possibility of the chain 4 falling off, but also makes it easy to adjust the tightness of the chain 4.

[0025] In some embodiments, such as Figure 10 As shown, a plurality of guide bars 26 are fixedly connected around the inner wall of the second gear 16; a plurality of guide grooves 27 are formed around the end of the rotating shaft 13 close to the interior of the sealing box 6; the guide bars 26 are slidably engaged with the guide grooves 27; Specifically, the sliding fit between the guide bar 26 and the guide groove 27 not only facilitates adjustment of the position of the second gear 16 on the rotating shaft 13 , but also improves the connection strength between the second gear 16 and the rotating shaft 13 .

[0026] Further, such as Figures 9 to 11 As shown, the outer ring of the third rack 18 on both sides is provided with a limit frame 28; the limit frame 28 is bolted to the inside of the sealing box 6; Specifically, the top and bottom surfaces of the No. 3 rack 18 are fixed with convex strips, and the top and bottom surfaces of the inner cavity of the limit frame 28 are provided with grooves matching the convex strips; the No. 3 rack 18 on both sides is limited and fixed by the set limit frame 28, thereby limiting the position of the No. 3 rack 18 and improving the transmission stability of the No. 3 rack 18 and the No. 3 gear 20.

[0027] In some embodiments, such as Figures 6 to 8 As shown, the outer ring of the rotating shaft 13 is provided with a pair of shaft sleeves 29; the two shaft sleeves 29 are respectively located on the outer side and the inner side of the sealing box 6; Specifically, the shaft sleeve 29 is slidably mounted on the outer ring of the rotating shaft 13, and the rotating shaft 13 can rotate inside the shaft sleeve 29; the two shaft sleeves 29 are respectively located on both sides of the sealing cover plate 602 of the sealing box 6, and the two shaft sleeves 29 are symmetrically arranged; the outer rings of the two shaft sleeves 29 are each provided with a plurality of circular holes, and bolts are arranged inside the circular holes, and the bolts pass through the sealing cover plate 602 of the sealing box 6; the inner wall of the shaft sleeve 29 is provided with a sealing ring; The shaft sleeve 29 effectively improves the rotation stability of the rotating shaft 13 and effectively prevents foreign matter from entering the interior of the sealing box 6 to cause operation failure.

[0028] Working principle: Rotate the driving rod 19 to drive the No. 3 gear 20 to rotate, drive the No. 3 racks 18 on both sides to move away from each other, the No. 3 rack 18 drives the No. 2 rack 17 to move, and the guide rail 22 and the slider 23 slide together to guide the movement of the No. 2 rack 17; the No. 2 rack 17 drives the No. 3 gear 20 to rotate, drive the rotating shaft 13 to rotate, drive the pressure arm 14 and the pressure sprocket 15 to rotate and press down, the pressure sprocket 15 presses down the top of the chain 4, and the pressure sprockets 15 on both sides press down the chains 4 on both sides of the drive sprocket 3 respectively, so that the chain 4 is firmly engaged with the drive sprocket 3, and at the same time, it is easy to adjust the tightness of the chain 4; thereby reducing the possibility of the chain 4 falling off and improving the stability of the chain 4 operation; The motor drives the connecting shaft 2 through a belt drive, which in turn drives the drive sprocket 3, which in turn drives the chains 4 on both sides to move. The chains 4 then drive multiple scrapers 5 to move. The material inlet enters the machine body 1 and is immersed in the suspension. Light materials such as clean coal float to the upper layer, while heavy materials such as gangue sink to the bottom of the trough. Under the action of horizontal flow, the light materials floating on the upper layer are discharged from the light material outlet as clean coal products. The scrapers 5 push the heavy materials that have sunk to the bottom of the trough out of the heavy material outlet, completing the sorting process. When the chains 4 on both sides drive the scrapers 5 to push the heavy materials that have sunk to the bottom of the trough, the gangue creates resistance on the scrapers 5, causing the middle part of the scrapers 5 to bend elastically, resulting in a pulling force toward the middle at both ends of the scrapers 5, causing the chains 4 to generate a side force, causing the chains 4 to fall off the drive sprocket 3; At this time, the staff uses a wrench to rotate the No. 1 gear 10, cooperates with the No. 1 rack 11, pushes the slide column 8 to rise along the inside of the support sleeve 7, pushes the support plate 9 to rise, and the support plates 9 on both sides raise the chain 4. The chain 4 between the support plates 9 on both sides rises to above the drive sprocket 3. After that, the staff pushes the chain 4 to move horizontally along the support plate 9 toward the drive sprocket 3, so that the chain 4 is vertically aligned with the drive sprocket 3. Finally, the driving slide column 8 descends in the inside of the support sleeve 7, driving the support plate 9 to descend, so that the chain 4 descends and engages with the drive sprocket 3; thereby completing the chain-up work of the chain 4, reducing the difficulty of maintenance for the staff, improving the efficiency of maintenance, and reducing the loss of production stoppage.

[0029] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy medium shallow trough separator with reduced wear of vulnerable parts, characterized by: The machine body comprises a plurality of connecting shafts which are uniformly rotated and installed inside the machine body; the outer rings of both ends of the connecting shafts are fixedly connected to drive sprockets; the outer rings of the plurality of drive sprockets on both sides are provided with chains; a scraper is fixedly connected between the chains on both sides; Sealing boxes are bolted on both sides of the inner wall of the machine body; the two ends of the connecting shaft are rotatably connected to the sealing boxes on both sides respectively; support sleeves are bolted on both sides of one side of the sealing box close to the middle of the machine body; the two support sleeves are located on both sides of the driving sprocket; a sliding column that can be raised and lowered is slidably installed inside the support sleeve; a support plate is fixed to the top of the sliding column; and the support plate is located at the bottom of the chain.

2. A heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 1, characterized in that: A gear bin is fixedly connected to one side of the top of the support sleeve; the interior of the gear bin is communicated with the interior of the support sleeve; a No. 1 gear is rotatably installed inside the gear bin; the rotating shaft of the No. 1 gear rotates and penetrates the outer wall of the gear bin; a No. 1 rack is fixedly connected to the side of the sliding column close to the gear bin; the No. 1 gear is meshed with the No. 1 rack.

3. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 1, characterized in that: Both ends of the supporting plate are fixedly connected with baffles inclined upward.

4. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 1, characterized in that: The sealing box is rotatably mounted with rotating shafts on both sides of the top of one side close to the middle of the body; a pressing arm capable of pressing downward is bolted to one end of the rotating shaft close to the middle of the body; a pressing sprocket is rotatably mounted on the end of the pressing arm away from the rotating shaft; the pressing sprocket is engaged with the top of the chain.

5. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 4, characterized in that: The outer ring of the end of the rotating shaft close to the inside of the sealed box is fixedly connected to the No. 2 gear; the top of the No. 2 gear is provided with a No. 2 rack meshing with the No. 2 gear; the end of the No. 2 rack close to the middle of the sealed box is fixedly connected to the No. 3 rack; the No. 3 racks on both sides are symmetrically arranged; a driving rod is rotatably installed in the middle of the top surface of the sealed box; the bottom end of the driving rod is fixedly connected to the No. 3 gear; the two sides of the No. 3 gear are respectively meshed with the No. 3 racks on both sides.

6. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 5, characterized in that: A plurality of guide bars are fixedly connected around the inner wall of the second gear; a plurality of guide grooves are opened around one end of the rotating shaft close to the inside of the sealing box; and the guide bars are slidably matched with the guide grooves.

7. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 5, characterized in that: The outer rings of the No. 3 racks on both sides are provided with limit frames; the limit frames are bolted to the inside of the sealing box.

8. The heavy medium shallow trough separator for reducing wear of vulnerable parts according to claim 4, characterized in that: The outer ring of the rotating shaft is provided with a pair of shaft sleeves; the two shaft sleeves are respectively located on the outer side and the inner side of the sealing box.

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