Return belt material cleaning device
By combining a scraper and a compressed air jetting mechanism on the belt conveyor, the problem of sticky material spillage on the belt conveyor is solved, achieving efficient cleaning and stable equipment operation, and extending the service life of the scraper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGTIAN IRON & STEEL GRP (NANTONG) CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-28
AI Technical Summary
During operation, sticky materials tend to spill onto the reverse side of the belt of existing belt conveyors, causing material accumulation that affects equipment operation. Traditional scrapers cannot effectively clean this up.
The cleaning device combines a scraper and a compressed air blowing mechanism. The scraper is made of polyurethane and the counterweight ensures close contact with the belt conveyor. The compressed air blowing mechanism is used to further clean up residual materials.
It effectively cleans sticky materials, reduces material carried back on the conveyor belt, improves cleaning efficiency and device flexibility, and extends the service life of the scraper.
Smart Images

Figure CN224171838U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of belt conveyor technology, and in particular to a return belt cleaning device. Background Technology
[0002] Belt conveyors, also known as belt conveyors, are a type of continuous conveying equipment widely used in industrial production. They achieve efficient and stable material transport through the cyclical movement of the conveyor belt. Belt conveyors mainly consist of a conveyor belt, drive unit, rollers, idlers, tensioning device, frame, and cleaner. The drive unit drives the rollers to rotate, and the friction between the rollers and the conveyor belt causes the conveyor belt to move continuously. Materials are placed on the conveyor belt and move with it, thus realizing the transport of materials. They are widely used in industrial production, construction, and other fields.
[0003] Currently, during the operation of belt conveyors, due to the stickiness of the material, when the material falls from the head of the belt to the feed port, some material is carried to the reverse side of the belt, causing spillage. The traditional scraper currently in use cannot completely scrape off materials with high moisture and high stickiness, resulting in a large amount of material being spilled onto the reverse side of the belt, causing material accumulation and affecting the operation of the equipment. Therefore, this needs to be improved. Utility Model Content
[0004] In order to clean all the material stuck to the belt head and put it into the discharge port, thereby reducing the amount of material carried on the return belt, this application provides a return belt cleaning device.
[0005] The technical solution of the return conveyor belt cleaning device provided in this application is as follows:
[0006] A return conveyor belt cleaning device includes a conveyor body, a fixed support is provided below the conveyor body, a scraper is provided on the fixed support, and a compressed air blowing mechanism is provided behind the scraper. The compressed air blowing mechanism includes a compressed air guiding device and a compressed air pipeline. The length direction of the compressed air guiding device is consistent with the width direction of the conveyor body. The compressed air guiding device is connected to the compressed air pipeline. A plurality of compressed air blowing ports are opened on the surface of the compressed air guiding device, and the plurality of compressed air blowing ports are distributed along the length direction of the compressed air guiding device.
[0007] By adopting the above technical solution, during the operation of the belt conveyor, the scraper can remove the material adhering to the surface of the belt conveyor body. After scraping, the remaining material on the surface of the belt conveyor body will be blown away by the compressed air blowing mechanism, thereby further cleaning the adhering material, effectively improving the problem of sticky material that cannot be cleaned and reducing the amount of material carried on the belt during return trips.
[0008] Preferably, the fixed bracket is L-shaped, the scraper is disposed at one end of the fixed bracket, and a counterweight is disposed at the other end of the fixed bracket.
[0009] By adopting the above technical solution and setting a counterweight, one end of the fixed bracket can be lowered, allowing the scraper at the other end to come into contact with the conveyor body. This ensures that the scraper is tightly attached to the lower surface of the conveyor body, thereby effectively cleaning the material adhering to the conveyor body.
[0010] Preferably, a mounting bracket is provided below the belt conveyor body, and the mounting bracket is provided with a plug groove for the fixing bracket to pass through.
[0011] By adopting the above technical solution, the installation bracket and plug-in slot can effectively improve the ease of installation of the fixed bracket, scraper, and compressed air blowing mechanism.
[0012] Preferably, the scraper is made of polyurethane.
[0013] By adopting the above technical solution, polyurethane material is a high-strength and high-toughness polymer, which also has good wear resistance, excellent corrosion resistance and chemical resistance, and can effectively improve the structural strength of the scraper and extend its service life.
[0014] Preferably, the scraper has an inclined scraping surface on the side wall away from the conveyor body.
[0015] By adopting the above technical solution, the inclined scraping surface can guide the scraped material, so that the material can accurately enter the discharge port, thereby improving cleaning efficiency and effect.
[0016] Preferably, the compressed air blowing mechanism is disposed between the scraper and the counterweight.
[0017] By adopting the above technical solution, the residual material can be further blown away after the scraper has finished scraping, thereby improving the cleaning efficiency and effect.
[0018] Preferably, the compressed air guiding device has two guide slopes on its surface.
[0019] By adopting the above technical solution, setting a guide slope can effectively prevent materials from accumulating on the surface of the compressed air guide device, which would then cause caking over time and affect the normal operation of the belt conveyor. The materials blown down will fall further through the guide slope, thereby reducing the probability of accumulation.
[0020] Preferably, the compressed air jetting mechanism is movably connected to the fixed bracket.
[0021] By adopting the above technical solution, the compressed air blowing mechanism is movably connected to the fixed bracket, thereby enabling precise adjustment of the appropriate angle according to the actual required blowing direction. This allows for the concentrated and effective cleaning of the material adhering to the belt, further improving the flexibility, cleaning effect, and efficiency of the cleaning device of this application.
[0022] In summary, this application includes at least one of the following beneficial technical effects: During the operation of the conveyor belt, the scraper can remove the material adhering to the surface of the conveyor belt. After scraping, the remaining material on the surface of the conveyor belt will be blown away by the compressed air blowing mechanism, thereby further cleaning the adhering material, effectively improving the problem of sticky materials that cannot be cleaned and reducing the amount of material carried on the belt during return trips; the addition of a counterweight allows one end of the fixed bracket to drop, enabling the scraper at the other end to abut against the conveyor belt, ensuring that the scraper is tightly attached to the lower surface of the conveyor belt, thus effectively cleaning the material adhering to the conveyor belt; polyurethane material is a high-strength and high-toughness polymer with good wear resistance, corrosion resistance, and excellent chemical resistance, which can effectively improve the structural strength of the scraper and extend its service life. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of a return conveyor belt cleaning device according to an embodiment of this application.
[0024] Figure 2 This is a schematic diagram of the compressed air guiding device according to an embodiment of this application.
[0025] Figure 3 This is a top view of the compressed air guiding device according to an embodiment of this application.
[0026] Explanation of reference numerals in the attached drawings: 1. Conveyor body; 2. Fixed bracket; 3. Scraper; 31. Inclined scraper surface; 4. Compressed air jetting mechanism; 41. Compressed air guiding device; 42. Compressed air pipeline; 43. Compressed air jet nozzle; 44. Guide slope; 5. Counterweight; 6. Mounting bracket; 61. Insertion groove. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0028] This application discloses a return conveyor belt cleaning device. (Refer to...) Figure 1The system includes a belt conveyor body 1. A mounting bracket 6 is provided on the ground below the belt conveyor body 1. The mounting bracket 6 is vertically arranged. A plug-in groove 61 is provided on the top of the mounting bracket 6. A fixing bracket 2 is installed in the plug-in groove 61. In this embodiment, the fixing bracket 2 is L-shaped, with its shorter end set vertically and the other end set horizontally. The length direction of the longer end of the fixing bracket 2 is consistent with the length direction of the belt conveyor body 1.
[0029] Reference Figure 1 A scraper 3 is installed on the fixed bracket 2. The scraper 3 is located below the conveyor body 1 and is positioned at the shorter end of the fixed bracket 2. An inclined scraping surface 31 is provided on the top side wall of the scraper 3 away from the conveyor body 1 to guide the scraped material, allowing it to fall more accurately into the discharge port and improving cleaning efficiency. A counterweight 5 is installed at the other end of the fixed bracket 2, which causes one end of the fixed bracket 2 to drop, allowing the scraper 3 at the other end to come into contact with the conveyor body 1. This ensures that the scraper 3 is tightly attached to the lower surface of the conveyor body 1, effectively cleaning the material adhering to the conveyor body 1. In this embodiment, the scraper 3 is made of polyurethane, a high-strength and high-toughness polymer with good wear resistance, corrosion resistance, and chemical resistance. This effectively improves the structural strength of the scraper 3, extends its service life, and has high economic benefits.
[0030] Reference Figure 1 , Figure 2 and Figure 3 The fixed bracket 2 is also equipped with a compressed air blowing mechanism 4, which is located between the scraper 3 and the counterweight 5. The compressed air blowing mechanism 4 is movably connected to the fixed bracket 2 so as to accurately adjust the appropriate angle according to the actual required blowing direction, thereby concentrating and effectively cleaning the material adhering to the belt, further improving the flexibility, cleaning effect and efficiency of the cleaning device of this application.
[0031] Reference Figure 1 , Figure 2 and Figure 3The compressed air blowing mechanism 4 includes a compressed air guiding device 41 and a compressed air pipe 42. The length direction of the compressed air guiding device 41 is consistent with the width direction of the belt conveyor body 1. The compressed air pipe 42 is connected to the compressed air guiding device 41 to input compressed air into the compressed air guiding device 41. Several compressed air blowing ports 43 are opened on the surface of the compressed air guiding device 41. The several compressed air blowing ports 43 are evenly distributed along the length direction of the compressed air guiding device 41 to blow the material. Guide slopes 44 are opened on both sides of the top of the compressed air guiding device 41 to prevent material from accumulating and sticking on the surface of the compressed air guiding device 41, which would affect the normal operation of the belt conveyor body 1.
[0032] The implementation principle of the return belt cleaning device in this application embodiment is as follows: according to the actual required blowing direction, the appropriate angle of the compressed air blowing mechanism 4 is precisely adjusted. When the belt conveyor body 1 runs, under the action of the counterweight 5, the scraper 3 abuts against the bottom of the belt conveyor body 1, thereby effectively scraping off the material. The remaining material will be further cleaned by the compressed air blowing mechanism 4, reducing the problem of material carried on the belt during return.
[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A return conveyor belt cleaning device, comprising a conveyor belt body, characterized in that: A fixed support is provided below the belt conveyor body, and a scraper is provided on the fixed support. A compressed air blowing mechanism is provided behind the scraper. The compressed air blowing mechanism includes a compressed air guiding device and a compressed air pipeline. The length direction of the compressed air guiding device is consistent with the width direction of the belt conveyor body. The compressed air guiding device is connected to the compressed air pipeline. A plurality of compressed air blowing ports are opened on the surface of the compressed air guiding device, and the plurality of compressed air blowing ports are distributed along the length direction of the compressed air guiding device.
2. The return conveyor belt cleaning device according to claim 1, characterized in that: The fixed bracket is L-shaped, the scraper is located at one end of the fixed bracket, and a counterweight is located at the other end of the fixed bracket.
3. The return conveyor belt cleaning device according to claim 2, characterized in that: A mounting bracket is provided below the conveyor body, and the mounting bracket is provided with a slot for the fixing bracket to pass through.
4. The return conveyor belt cleaning device according to claim 1, characterized in that: The scraper is made of polyurethane.
5. A return conveyor belt cleaning device according to claim 1, characterized in that: The scraper has an inclined scraping surface on the side wall away from the conveyor body.
6. A return conveyor belt cleaning device according to claim 2, characterized in that: The compressed air jetting mechanism is located between the scraper and the counterweight.
7. A return conveyor belt cleaning device according to claim 1, characterized in that: The compressed air guide device has two guide slopes on its surface.
8. A return conveyor belt cleaning device according to claim 1, characterized in that: The compressed air jetting mechanism is movably connected to the fixed support.