Scraping device for belt conveyor

Abstract

The utility model discloses a scraping device for a belt conveyor. A scraping device is installed at the bottom of the return conveying belt below the discharging roller and comprises a scraping frame, a scraping plate and a chain, adjusting structures are arranged at the two ends of the scraping plate, each adjusting structure comprises a U-shaped adjusting seat, the adjusting seats are fixedly connected with the chain, the open ends of the adjusting seats face inwards, vertical adjusting holes are formed in side plates of the adjusting seats, and the adjusting holes face inwards. The two ends of the scraping plate are arranged in the U-shaped notches of the adjusting seat respectively, the adjusting rod penetrates through the adjusting hole and the scraping plate, the adjusting rod on the outer side of the side plate of the adjusting seat is sleeved with an adjusting sleeve, the adjusting sleeve is fixedly connected with a vertical adjusting bolt, and the upper end of the adjusting bolt penetrates through the fixing plate and is provided with an adjusting nut; a material guide plate is arranged on the inner side of the material scraping frame. The material scraping device is simple in structure, after the material scraping plate is worn after being used for a long time, the material scraping plate is adjusted through the adjusting bolt of the adjusting structure, so that the material scraping plate is always in contact with the belt surface of the conveying belt during material scraping, material scraping is thorough, maintenance is convenient, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a belt conveyor, in particular to a scraping device used for the belt conveyor. Background Art

[0002] As efficient and continuous transport equipment, belt conveyors are widely used in industries such as coal mining, coal preparation, coal storage, and truck loading. When conveying materials, some highly viscous and wet materials can adhere to the belt surface. This adhered material can accumulate, affecting proper conveying. To prevent material from adhering to the conveyor belt, chain-driven scrapers are installed at the bottom of the conveyor belt. The scraped material falls to the outside of the discharge hopper, requiring regular manual cleaning, which is time-consuming and labor-intensive. Over time, the scrapers wear out, resulting in incomplete scraping and the need for replacement, increasing maintenance costs. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a scraping device for a belt conveyor, which improves scraping efficiency and is convenient for maintenance and adjustment.

[0004] The utility model solves the technical problem and adopts the following technical solutions:

[0005] A scraper device for a belt conveyor, wherein a discharge funnel is installed on the periphery of the discharging roller of the belt conveyor, and a scraper device is installed on the bottom of the return conveyor belt below the discharging roller, the scraper device comprises a scraper frame, a scraper plate and a chain, both ends of the scraper plate are provided with adjustment structures, the adjustment structure comprises a U-shaped adjustment seat, the adjustment seat is fixedly connected to the chain and the open end faces inward, the side plate of the adjustment seat is provided with a vertical adjustment hole, the two ends of the scraper plate are respectively placed in the U-shaped groove of the adjustment seat, the adjustment rod passes through the adjustment hole and the scraper plate, the adjustment rod sleeve on the outer side of the side plate of the adjustment seat is provided with an adjustment sleeve, the adjustment sleeve is fixedly connected to the vertical adjustment bolt, the upper end of the adjustment bolt passes through the fixed plate and the adjustment nut is installed; a guide plate is provided on the inner side of the scraper frame.

[0006] Compared with the prior art, the present invention adopting the above technical solution has the following beneficial effects:

[0007] The structure is simple and the cost is low. After the scraper plate is worn out after long-term use, the scraper plate can be adjusted by adjusting the adjustment bolts of the structure so that the scraper plate is always in contact with the belt surface of the conveyor belt when scraping the material, so the material is scraped thoroughly, maintenance is convenient, and maintenance costs are reduced; the guide plate guides the scraped material into the discharge funnel.

[0008] Furthermore, the optimization scheme of the present invention is:

[0009] The scraper frame is placed below the belt conveyor frame, and guide plates are symmetrically provided on the inner sides of the vertical support rods on both sides of the scraper frame, and the guide plates are arranged tilted downward.

[0010] The upper end of the guide plate is hinged to the vertical support rod, the inner plate surface of the guide plate is hinged to the upper end of the adjusting rod, the lower end of the adjusting rod is inserted in the adjusting block, one side of the adjusting block is fixed with a connecting pin and hinged to the connecting plate, the connecting plate is fixed to the vertical support rod, and the adjusting rods on both sides of the adjusting block are installed with nuts.

[0011] The upper plate surface of the guide plate is provided with a wear-resistant rubber plate.

[0012] Both ends of the adjusting rod are step structures, and the adjusting sleeve is sleeved on the shaft head.

[0013] The fixing plate is in an inverted L shape, and the adjusting bolts on both sides of the horizontal portion of the fixing plate are respectively installed with adjusting nuts.

[0014] The bottom of the upper horizontal part and the lower horizontal part of the chain are respectively provided with a supporting structure, which includes a support rail, a roller and a bolt pin. The two ends of the support rail are respectively fixed to the scraper frame. The top of the support rail is provided with a groove that penetrates the support rail body. A plurality of rollers are provided in the groove. The rollers are rotatably connected to the support rail through the bolt pin, and the rollers are rollingly connected to the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the first embodiment of the present utility model;

[0016] Figure 2 for Figure 1 AA cross-sectional view;

[0017] Figure 3 This is a front view of the adjustment structure of Example 1 of the present utility model;

[0018] Figure 4 for Figure 3 A top view of

[0019] Figure 5 This is a structural diagram of the guide plate of the second embodiment of the present utility model;

[0020] Figure 6 for Figure 5 Figure B;

[0021] Figure 7 This is a schematic diagram of the installation of the support structure of the third embodiment of the present utility model;

[0022] Figure 8 This is a transverse cross-sectional view of the supporting structure.

[0023] In the figure: conveyor frame 1; discharge roller 2; conveyor belt 3; discharge hopper 4; scraper frame 5; vertical support rod 5-1; sprocket shaft 6; sprocket 7; chain 8; scraper plate 9; adjustment seat 10; adjustment hole 10-1; adjustment rod 11; adjustment sleeve 12; adjustment bolt 13; fixing plate 14; adjustment nut 15; guide plate 16; ear plate 17; adjustment rod 18; adjustment block 19; connecting plate 20; support rail 21; roller 22; bolt pin 23. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. Example 1

[0026] See also Figure 1-Figure 4 This embodiment provides a scraper device for a belt conveyor. The belt conveyor is mainly composed of a conveyor frame 1, a discharge roller 2 and a conveyor belt 3. The discharge roller 2 is rotatably installed at the discharge end of the conveyor frame 1. The conveyor belt 3 surrounds the discharge roller 2. A discharge funnel 4 is installed on the periphery of the discharge roller 2. The discharge funnel 4 is connected to the conveyor frame 1 by bolts.

[0027] A scraper device is installed at the bottom of the return conveyor belt below the discharge roller 2. It primarily consists of a scraper frame 5, a sprocket shaft 6, a sprocket 7, a chain 8, a scraper plate 9, and an adjustment mechanism. Two scraper frames 5 are placed at the bottom of the return conveyor belt and fixedly connected to the conveyor frame 1. Each scraper frame 5 is mounted with a sprocket shaft 6, each end of which is rotatably connected to the scraper frame 5 via bearing blocks. The sprocket shafts 6 are arranged horizontally, with sprockets 7 mounted at each end. The two sprockets 7 on the same side are connected by a chain 8.

[0028] Multiple scraper plates 9 are installed between the chains 8 on both sides. Each end of the scraper plates 9 is equipped with an adjustment structure, which mainly consists of an adjustment seat 10, an adjustment rod 11, an adjustment sleeve 12, an adjustment bolt 13, a fixing plate 14, and an adjustment nut 15. The adjustment seat 10 is U-shaped, with the open end facing inward. The two adjustment seats 10 are symmetrically arranged. The bottom plate of the adjustment seat 10 is fixedly connected to the chain 8, and the two side plates of the adjustment seat 10 are symmetrically provided with vertical adjustment holes 10-1. The ends of the scraper plates 9 are respectively placed in the U-shaped notches of the adjustment seat 10. The circular adjustment rod 11 extends through the adjustment hole 10-1 and the scraper plates 9. The ends of the adjustment rod 11 are stepped structures, and the adjustment sleeve 12 is mounted on the shaft head of the adjustment rod 11. A vertical adjusting bolt 13 is welded to the outer wall of the adjusting sleeve 12. The upper end of the adjusting bolt 13 passes through the horizontal part of the inverted L-shaped fixing plate 14. The vertical part of the fixing plate 14 is welded to the side plate of the adjusting seat 10. The adjusting bolts 13 on both sides of the horizontal part of the fixing plate 14 are respectively installed with adjusting nuts 15.

[0029] After the scraper plate 9 is worn out after long-term use, loosen the adjusting nut 15 below the horizontal part of the fixing plate 14, tighten the adjusting nut 15 above the horizontal part, and move the adjusting bolt 13 upward, thereby driving the adjusting sleeve 12 and the adjusting rod 11 to move upward. The adjusting rod 11 drives the scraper plate 9 to move upward. After the top end of the scraper plate 9 contacts the belt surface of the conveyor belt 3, tighten the adjusting nut 15. Example 2

[0030] See also Figure 5 、 Figure 6 Guide plates 16 are symmetrically positioned on the inner sides of the vertical support rods 5-1 on either side of the scraper frame 5. These guide plates 16 are arranged at a downward angle and direct scraped material into the discharge hopper 4. To accommodate belt conveyors of varying specifications and materials, the guide plates 16 feature an adjustable inclination angle. They are connected to the vertical support rods 5-1 via hinges or hinge assemblies. The lower surface of the guide plates 16 is hinged to the upper end of an adjustment rod 18 via an ear plate 17 and a pin. The adjustment rod 18 is a threaded rod, the lower end of which is inserted into an adjustment block 19. A connecting pin is welded to one side of the adjustment block 19 and hingedly connected to a connecting plate 20, which is welded to the vertical support rod 5-1. Nuts are attached to the adjustment rods 18 on either side of the adjustment block 19. The adjustment rods 18 adjust the inclination angle of the guide plates 16. A wear-resistant rubber sheet is installed on the upper surface of the guide plates 16 to enhance their service life. Example 3

[0031] See also Figure 7 、 Figure 8To prevent the chain 8 from sagging between the two sprockets 7 and affecting the scraping of the scraper 9, a support structure is installed between the two scraper frames 5. The support structure mainly consists of a support rail 21, rollers 22, and bolt pins 23. The two support rails 21 are placed at the bottom of the upper and lower horizontal parts of the chain 8, respectively. The top of the support rail 21 has a groove that runs through the support rail body. Multiple rollers 22 are installed in the groove. The rollers 22 are rotatably connected to the support rail 21 by bolt pins 23. The rollers 22 are in rolling connection with the chain 8. The rollers 22 reduce wear on the chain 8 and improve transmission stability. The support structure keeps the chain 8 in a horizontal state, so that the scraper 9 is always in contact with the belt surface of the conveyor belt 3.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A scraper device for a belt conveyor, wherein a discharge hopper is installed on the periphery of the belt conveyor discharge roller, and a scraper device is installed on the bottom of the return conveyor belt below the discharge roller. The scraper device includes a scraper frame, a scraper plate and a chain, and is characterized by: Both ends of the scraper plate are provided with adjustment structures, which include a U-shaped adjustment seat, the adjustment seat is fixedly connected to the chain and the open end is inward, the side plate of the adjustment seat is provided with a vertical adjustment hole, the two ends of the scraper plate are respectively placed in the U-shaped groove of the adjustment seat, the adjustment rod passes through the adjustment hole and the scraper plate, the adjustment rod sleeve on the outer side of the side plate of the adjustment seat is provided with an adjustment sleeve, the adjustment sleeve is fixedly connected to the adjustment bolt, the upper end of the adjustment bolt passes through the fixed plate and the adjustment nut is installed; a guide plate is provided on the inner side of the scraper frame.

2. The scraper device for a belt conveyor according to claim 1, characterized in that: The scraper frame is placed below the belt conveyor frame, and guide plates are symmetrically provided on the inner sides of the vertical support rods on both sides of the scraper frame, and the guide plates are arranged tilted downward.

3. The scraper device for a belt conveyor according to claim 2, characterized in that: The upper end of the guide plate is hinged to the vertical support rod, the inner plate surface of the guide plate is hinged to the upper end of the adjusting rod, the lower end of the adjusting rod is inserted in the adjusting block, one side of the adjusting block is fixed with a connecting pin and hinged to the connecting plate, the connecting plate is fixed to the vertical support rod, and the adjusting rods on both sides of the adjusting block are installed with nuts.

4. The scraper device for a belt conveyor according to claim 2, characterized in that: The upper plate surface of the guide plate is provided with a wear-resistant rubber plate.

5. The scraper device for a belt conveyor according to claim 1, characterized in that: Both ends of the adjusting rod are step structures, and the adjusting sleeve is sleeved on the shaft head.

6. The scraper device for a belt conveyor according to claim 1, characterized in that: The fixing plate is in an inverted L shape, and the adjusting bolts on both sides of the horizontal portion of the fixing plate are respectively installed with adjusting nuts.

7. The scraper device for a belt conveyor according to claim 1, characterized in that: The bottom of the upper horizontal part and the lower horizontal part of the chain are respectively provided with a supporting structure, which includes a support rail, a roller and a bolt pin. The two ends of the support rail are respectively fixed to the scraper frame. The top of the support rail is provided with a groove that penetrates the support rail body. A plurality of rollers are provided in the groove. The rollers are rotatably connected to the support rail through the bolt pin, and the rollers are rollingly connected to the chain.

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