Scraper device of belt sweeper

Abstract

The utility model provides a belt sweeper scraper device which comprises a suspension frame, a lifting frame is arranged at the bottom of the suspension frame, a scraper portion and a compression roller located on the upstream side of the scraper portion are arranged at the bottom of the lifting frame, and spiral pressing knives evenly distributed in the circumferential direction are fixedly connected to the peripheral wall of the compression roller. According to the utility model, the lifting frame is arranged, the scraping plate part and the compression roller located at the upstream of the scraping plate part are arranged at the bottom of the lifting frame, and then the spiral pressing knife is arranged on the compression roller, so that residues on the conveying flat belt can be extruded and cut by the spiral pressing knife before being scraped by the scraping plate part, and the adsorption force between the residues and the conveying flat belt can be greatly reduced; and the scraping resistance of the scraping plate part is reduced, so that residues on the conveying flat belt can be thoroughly cleaned.

Description

Technical Field

[0001] This utility model relates to the field of belt cleaning technology, specifically a belt cleaner scraper device. Background Technology

[0002] In bulk material conveying systems such as coal and ore in ports, docks, thermal power plants, and mines, the purpose of cleaning devices is to effectively remove accumulated coal and debris from the surface of the return belt. This prevents accumulated coal from being drawn into the drive drum and tail drum, causing uneven pressure between the belt and the drum surface, resulting in damage to the rubber-coated surfaces of the drive drum and tail drum, as well as the belt surface, reducing the service life of the drums and belts. At the same time, it increases the unbalanced dynamic load on the rotating parts of the drums, leading to belt misalignment, increased bearing pitting, and a series of other problems, directly affecting the stable and reliable operation of the belt conveyor.

[0003] The utility model patent with publication number CN208453856U proposes a V-shaped gap cleaner for belt conveyors. The specific technical solution is as follows: The V-shaped gap cleaner includes a main support composed of a first support, a second support, a first crossbeam, and a second crossbeam. A V-shaped support is connected to the main support, and the V-shaped support is connected to the main support via a first hanger and two second hangers. A polyurethane scraper is mounted on the lower part of the V-shaped support. The front end of the polyurethane scraper is arc-shaped, and the thickness of the outwardly flared end is greater than the thickness of the upper end of the arc-shaped scraper, making it less prone to jumping during belt operation. The self-weight of the V-shaped support and the polyurethane scraper automatically adjusts the contact force between the polyurethane scraper and the belt. Even when the belt is constantly shaking, the polyurethane scraper can remain close to the upper surface of the belt, maintaining a stable cleaning force. When the scraper wears down, under the action of a preset force, the scraper remains in contact with the belt, ensuring cleaning efficiency.

[0004] However, the existing technology has shortcomings when used for loading ships at the dock: the air at the dock is humid, and transport residues (coal, ore, etc.) are easily formed on the conveyor belt. The adhesion between these residues and the conveyor belt is strong, resulting in poor removal effect of the polyurethane scraper and accelerating the wear of the polyurethane scraper.

[0005] Therefore, this utility model provides a scraper device for a belt sweeper. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a scraper device for a belt cleaner to solve the problems mentioned in the background art. This utility model has the advantages of scraping the residue on the conveyor belt more thoroughly, and also has the advantages of making it easier to replace the scraper and improving the utilization rate of the scraper.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a belt sweeper scraper device, including a suspension frame, a lifting frame is provided at the bottom of the suspension frame, a scraper part and a pressure roller located on the upstream side of the scraper part are provided at the bottom of the lifting frame, and a spiral pressure knife uniformly distributed in the circumferential direction is fixedly connected to the outer peripheral wall of the pressure roller.

[0008] Furthermore, the lifting frame includes a rectangular suspension beam and a control cylinder, the control cylinder being fixedly mounted on the top of the lifting frame and its output shaft being fixedly connected to the top of the rectangular suspension beam.

[0009] Furthermore, the rectangular suspension beam is provided with a vertical shaft that is elastically sliding and engaged with the upper and lower parts. The bottom of the vertical shaft is fixedly connected to a portal frame, and the two ends of the pressure roller are fixedly connected to support shafts that are rotatably connected to the free ends of the portal frame.

[0010] Furthermore, a guide sleeve is welded through the rectangular cantilever beam and fitted onto the outside of the vertical shaft, and a support spring is fitted onto the outside of the vertical shaft between the rectangular cantilever beam and the portal frame.

[0011] Furthermore, the scraper section includes a V-shaped positioning plate, a central scraper, and side scrapers. The top of the V-shaped positioning plate is fixedly connected to the bottom of the rectangular cantilever beam. The central scraper is located in the middle of the bottom of the V-shaped positioning plate, and side scrapers are provided on both inclined sides of the bottom of the V-shaped positioning plate.

[0012] Furthermore, the top of the central scraper is fixedly connected to a central insertion shaft, the top of the side scraper is fixedly connected to a side insertion shaft, and the bottom of the V-shaped positioning plate is provided with a central insertion hole and a side insertion hole respectively for insertion and connection with the central insertion shaft and the side insertion shaft.

[0013] Furthermore, the number of edge scrapers located on the inclined side of the V-shaped positioning plate is at least three.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a lifting frame is provided. A scraper section and a pressure roller located upstream of the scraper section are provided at the bottom of the lifting frame. Then, a spiral pressure knife is provided on the pressure roller. The residue on the conveyor belt is squeezed and cut by the spiral pressure knife before being scraped by the scraper section. This can greatly reduce the adsorption force between the residue and the conveyor belt, reduce the scraping resistance of the scraper section, and thus thoroughly clean the residue on the conveyor belt.

[0016] 2. The scraper part in this utility model includes a V-shaped positioning plate, a middle scraper and a side scraper. The middle scraper and the side scraper are respectively set at the tip and the inclined side of the V-shaped positioning plate. Moreover, the number of side scrapers located on the inclined side is at least three. This arrangement allows some side scrapers to be replaced individually when they are worn, thereby improving the utilization rate of other side scrapers and reducing waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a belt sweeper scraper device according to the present invention;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 This is a schematic diagram of the scraper section of a belt sweeper scraper device according to the present invention;

[0020] Figure 4 This is a schematic diagram of the scraper section of a belt sweeper scraper device of this utility model after an explosion and unfolding.

[0021] In the diagram: 1. Suspension frame; 2. Lifting frame; 21. Rectangular suspension beam; 211. Vertical shaft; 2111. Gantry frame; 212. Guide sleeve; 22. Control cylinder; 3. Scraper section; 31. V-shaped positioning plate; 311. Center insertion hole; 312. Side insertion hole; 32. Center scraper; 321. Center insertion shaft; 33. Side scraper; 331. Side insertion shaft; 4. Pressure roller; 41. Support shaft; 5. Spiral pressure knife; 6. Support spring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution: a belt cleaner scraper device, including a suspension frame 1, a lifting frame 2 at the bottom of the suspension frame 1, the lifting frame 2 being a gantry structure, which is bolted to the frame of the conveyor belt during use. The bottom of the lifting frame 2 is provided with a scraper part 3 and a pressure roller 4 located upstream of the scraper part 3. The scraper part 3 is used to scrape the surface of the conveyor belt. The outer peripheral wall of the pressure roller 4 is fixedly connected with circumferentially evenly distributed spiral pressure knives 5. During use, the spiral pressure knives 5 press against the conveyor belt. When the conveyor belt is running, the friction force drives the pressure roller 4 to rotate through the spiral pressure knives 5. When the pressure roller 4 rotates, the spiral pressure knives 5 cut the residue on the conveyor belt, causing the residue to be misaligned and detached from the conveyor belt. Moreover, the scraper part 3 can easily scrape off the upstream residue, thereby improving the cleanliness of the conveyor belt after scraping and reducing the wear rate of the scraper part 3.

[0024] Specifically, the lifting frame 2 includes a rectangular suspension beam 21 and a control cylinder 22. The control cylinder 22 is fixedly installed on the top of the lifting frame 2 and its output shaft is fixedly connected to the top of the rectangular suspension beam 21. When the control cylinder 22 is activated, it can control the lifting of the scraper section 3 and the spiral pressure knife 5 through the rectangular suspension beam 21, thereby controlling the squeezing force of the scraper section 3 and the spiral pressure knife 5 on the conveyor belt.

[0025] Furthermore, a vertical shaft 211 with elastic sliding fit is provided on the rectangular suspension beam 21. A portal frame 2111 is fixedly connected to the bottom of the vertical shaft 211, and support shafts 41 that are rotatably connected to the free ends of the portal frame 2111 are fixedly connected to both ends of the pressure roller 4. The purpose of this arrangement is to ensure that the spiral pressure knife 5 can reliably be in a state of pressing against the flat conveyor belt. In a specific implementation, it is preferred that a guide sleeve 212 is welded through the rectangular suspension beam 21 and sleeved on the outside of the vertical shaft 211. A support spring 6 is sleeved on the outside of the vertical shaft 211 and located between the rectangular suspension beam 21 and the portal frame 2111. The support spring 6 applies an elastic thrust to the pressure roller 4 through the portal frame 2111.

[0026] In this embodiment, the scraper part 3 includes a V-shaped positioning plate 31, a middle scraper 32, and a side scraper 33. The top of the V-shaped positioning plate 31 is fixedly connected to the bottom of the rectangular cantilever beam 21. The middle scraper 32 is located in the middle of the bottom of the V-shaped positioning plate 31. The two inclined sides of the bottom of the V-shaped positioning plate 31 are each provided with a side scraper 33. The middle scraper 32 and the side scraper 33 are set separately to reduce the manufacturing difficulty.

[0027] Furthermore, a central insertion shaft 321 is fixedly connected to the top of the central scraper 32, and a side insertion shaft 331 is fixedly connected to the top of the side scraper 33. The bottom of the V-shaped positioning plate 31 has a central insertion hole 311 and a side insertion hole 312 respectively for insertion and connection with the central insertion shaft 321 and the side insertion shaft 331. In specific implementation, the central insertion shaft 321 and the side insertion shaft 331 can be set to a structure with a square cross-section. This arrangement facilitates the replacement of worn side scrapers 33 or central scrapers 32. In order to improve the stability of the installation of side scrapers 33 or central scrapers 32, connecting screws can be welded to the free ends of the central insertion shaft 321 and the side insertion shaft 331.

[0028] In this embodiment, there are at least three side scrapers 33 located on the inclined side of the V-shaped positioning plate 31. This arrangement, combined with the detachable function of the side scraper 33 or the middle scraper 32, allows for targeted replacement of worn side scrapers 33, thereby improving the utilization rate of other side scrapers 33 with less wear.

[0029] Working principle: When in use, start the control cylinder 22 to control the rectangular suspension beam 21 to descend, so that the middle scraper 32 and the side scraper 33 press against the conveyor belt. At this time, under the action of the support spring 6, the spiral pressure knife 5 will also press against the conveyor belt. When the conveyor belt is running, the residue on it will first be rolled and cut by the spiral pressure knife 5, so that the residue is misaligned and separated from the conveyor belt. After misalignment and separation, the residue will fall to the outside of the conveyor belt after being scraped and guided by the middle scraper 32 and the side scraper 33, thereby realizing the cleaning treatment of residue on the conveyor belt.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A belt sweeper scraper device, comprising a suspension frame (1), characterized in that, The bottom of the suspension frame (1) is provided with a lifting frame (2), and the bottom of the lifting frame (2) is provided with a scraper part (3) and a pressure roller (4) located on the upstream side of the scraper part (3). The outer peripheral wall of the pressure roller (4) is fixedly connected with a spiral pressure knife (5) evenly distributed in the circumferential direction.

2. The belt sweeper scraper device according to claim 1, characterized in that: The lifting frame (2) includes a rectangular suspension beam (21) and a control cylinder (22). The control cylinder (22) is fixedly installed on the top of the lifting frame (2) and its output shaft is fixedly connected to the top of the rectangular suspension beam (21).

3. The belt sweeper scraper device according to claim 2, characterized in that: The rectangular suspension beam (21) is provided with a vertical shaft (211) that is elastically sliding and engaged with the upper and lower parts. The bottom of the vertical shaft (211) is fixedly connected to a portal frame (2111). The two ends of the pressure roller (4) are fixedly connected to a support shaft (41) that is rotatably connected to the free end of the portal frame (2111).

4. The belt sweeper scraper device according to claim 3, characterized in that: A guide sleeve (212) is welded through the rectangular cantilever beam (21) and sleeved on the outside of the vertical shaft (211). A support spring (6) is sleeved on the outside of the vertical shaft (211) between the rectangular cantilever beam (21) and the portal frame (2111).

5. The belt sweeper scraper device according to claim 2, characterized in that: The scraper section (3) includes a V-shaped positioning plate (31), a middle scraper (32) and a side scraper (33). The top of the V-shaped positioning plate (31) is fixedly connected to the bottom of the rectangular cantilever beam (21). The middle scraper (32) is located in the middle of the bottom of the V-shaped positioning plate (31). The two inclined sides of the bottom of the V-shaped positioning plate (31) are provided with side scrapers (33).

6. The belt sweeper scraper device according to claim 5, characterized in that: The top of the central scraper (32) is fixedly connected to a central insertion shaft (321), the top of the side scraper (33) is fixedly connected to a side insertion shaft (331), and the bottom of the V-shaped positioning plate (31) is provided with a central insertion hole (311) and a side insertion hole (312) respectively connected to the central insertion shaft (321) and the side insertion shaft (331).

7. The belt sweeper scraper device according to claim 6, characterized in that: The number of edge scrapers (33) located on the inclined side of the V-shaped positioning plate (31) is at least three.

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