Non-contact belt cleaning device for belt conveyor

Abstract

The utility model discloses a non -contact formula belt conveyor adhesive tape wind -force cleaning device, including frame and the belt roll of rotation support, and the belt roll is supported with conveying adhesive tape, and the return belt of conveying adhesive tape lower part is provided with the tensioning roller, and the front end of tensioning roller is supported with the air duct pipe, install a plurality of blow -off blow -out nozzles for blowing the adhering material on the return belt on the air duct pipe, the blow -off blow -out nozzle is used for adjusting the blowing angle through the rotation subassembly of frame arrangement, and the utility model avoids the direct friction of traditional scraper sweeper and belt through the non -contact design of wind -force cleaning device, and through adjustable angle's blow -off blow -out nozzle and intelligent control system, realizes efficient cleaning and system collaborative operation, has the advantages such as reducing equipment wear, improving cleaning efficiency, reducing maintenance cost, realizing intelligent control.

Description

Technical Field

[0001] This utility model relates to the field of belt cleaning for conveyor belts, specifically to a non-contact wind-powered belt cleaning device for conveyor belts. Background Technology

[0002] As the main conveying equipment for coal products in coal preparation plants, belt conveyors achieve continuous material transport through friction drive. The equipment mainly consists of core components such as a frame, conveyor belt, belt rollers, tensioning device, transmission device, and cleaning device.

[0003] In coal transportation, the performance of cleaning devices directly affects production efficiency. Because coal slime and residual coal easily adhere to the conveyor belt surface, traditional contact scraper cleaners have several drawbacks: First, the continuous contact between the mechanical scraper and the belt causes severe wear, leading to daily maintenance and significantly increasing maintenance costs. Second, contact cleaning is insufficient to completely remove adhering materials, affecting product quality and causing coal spillage under the return conveyor belt, significantly increasing on-site cleaning workload and seriously impacting safe and efficient coal washing operations. Furthermore, traditional cleaning devices lack sufficient adjustment flexibility and cannot adapt to the cleaning needs of different operating conditions. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a non-contact belt conveyor belt wind-powered cleaning device.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a non-contact belt conveyor air cleaning device, including a frame and a rotating support belt roller. The belt roller supports a conveyor belt, and a tension roller is provided on the return belt at the lower part of the conveyor belt. An air duct is supported at the front end of the tension roller, and a plurality of air nozzles for blowing away the material adhering on the return belt are installed on the air duct. The blowing nozzles are used to adjust the blowing angle through a rotating component set on the frame.

[0007] Furthermore, this application also proposes that the two ends of the air duct are rotatably supported on the inner side of the frame, the end of the air duct is connected to an air supply pipe, an accumulator is installed on the air supply pipe, and the air supply pipe is connected to a high-pressure air source pipe through a flexible hose.

[0008] Furthermore, this application also proposes that several of the blower nozzles are flat nozzles and are installed obliquely adjacent to the air duct, with multiple small blowing holes at the outlet of the flat nozzle.

[0009] Furthermore, this application also proposes that the rotating assembly includes a slide groove formed on the side of the frame, a sliding block slidably connected to the slide groove, a support tube fixed to the outside of the sliding block, the support tube rotatably supporting the rotating block that fixes the air supply pipe, and a plurality of insertion holes formed on the slide groove, wherein a fixing pin for fixing the sliding block is inserted into the insertion hole.

[0010] Furthermore, this application also proposes that the air duct is controlled and started through a linkage system, the linkage system including a controller, the controller being electrically connected to a control valve on the air supply pipe, and the controller being electrically connected to a drive motor of the belt roller.

[0011] Furthermore, this application also proposes that a material drop box is provided at the lower part of the outlet of the belt roller, and one side of the material drop box extends to the outside of the blower nozzle.

[0012] Compared with existing technologies, the advantages of this utility model are: the non-contact design of the wind-powered cleaning device avoids the direct friction between the traditional scraper cleaner and the belt, and the adjustable-angle blower nozzle and intelligent control system achieve efficient cleaning and coordinated system operation, which has the advantages of reducing equipment wear, improving cleaning efficiency, reducing maintenance costs and realizing intelligent control. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a practical 3D installation diagram;

[0015] Figure 3 yes Figure 2 Enlarged view of a partial structure in the image;

[0016] In the diagram: 1. Frame, 2. Belt roller, 3. Conveyor belt, 4. Return belt, 5. Tensioner roller, 6. Air supply pipe, 6. Accumulator, 7. Air duct pipe, 8. Air nozzle, 9. Control valve, 10. Controller, 11. Rotating block, 12. Support pipe, 13. Sliding block, 14. Slide groove, 15. Insertion hole, 16. Fixing pin, 17. Drop box. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1-3As shown, this application proposes a non-contact belt conveyor air cleaning device, including a frame and a belt roller with rotating support. The belt roller supports a conveyor belt, and a tension roller is provided on the return belt at the lower part of the conveyor belt. An air duct is supported at the front end of the tension roller, and several air nozzles for blowing away the material adhering on the return belt are installed on the air duct. The air nozzles are used to adjust the blowing angle through a rotating component set on the frame.

[0019] The frame can be a welded steel structure, with dimensions adapted to the belt conveyor specifications. The belt rollers are rotated and supported via bearing housings. The conveyor belt is typically made of multi-layered rubber composite material with a thickness ranging from 8-15mm. Tension rollers are used to maintain appropriate belt tension.

[0020] The duct is preferably made of stainless steel or aluminum alloy, with a diameter ranging from 20-40mm. The blower nozzles are arranged adjacent to each other and fixed to the duct by welding. The airflow direction of the blower nozzles is arranged at an acute angle to the return belt's running direction to enhance the cleaning effect.

[0021] This device uses high-pressure airflow to remove adhering materials non-contactly, avoiding the mechanical wear on the conveyor belt caused by traditional scraper sweepers. The air duct is arranged along the width of the return belt to ensure complete coverage. The airflow generated by the blower nozzles peels the material from the conveyor belt surface and carries it to a designated collection location. The adjustable angle of the rotating component can adapt to the cleaning needs of different material characteristics, improving cleaning efficiency. Compared with contact cleaning methods, this technology significantly reduces equipment maintenance frequency, extends conveyor belt life, and improves cleaning results.

[0022] Furthermore, this application also proposes that the two ends of the air duct are rotatably supported on the inside of the frame, the ends of the air duct are connected to an air supply pipe, an accumulator is installed on the air supply pipe, and the air supply pipe is connected to a high-pressure air source pipe through a flexible hose.

[0023] Specifically, the ductwork employs a rotating support structure, achieving a rotatable connection to the inner side of the frame via bearings or bushings. The air supply pipe can be made of metal and is connected to the end of the ductwork via an elbow. The accumulator is preferably a bladder-type accumulator, installed in the middle of the air supply pipe to stabilize airflow pressure and absorb pressure fluctuations. The high-pressure air source pipe is connected to the air supply pipe via a flanged flexible hose connector for easy disassembly and maintenance. As a preferred embodiment, the ductwork rotation angle is controlled within ±30° to avoid excessive hose twisting.

[0024] Therefore, this technical solution achieves flexible adjustment of the purging angle through a rotating, supported ductwork and a flexible air supply system. The accumulator effectively solves the problem of high-pressure airflow pulsation, ensuring the stability of the purging pressure. The rotating support structure avoids the stress concentration problem at the connection points caused by angle adjustment in traditional fixed ducts. The air supply pipe uses a flexible hose connection, ensuring airtightness while accommodating the rotational movement of the ductwork, solving the technical challenge of rigid pipes being difficult to move. This design significantly improves the adaptability of the purging device to different operating conditions while reducing the maintenance difficulty of the piping system.

[0025] Furthermore, this application also proposes that several blower nozzles are configured as flat nozzles and installed obliquely adjacent to the air duct, with multiple small blowing holes at the outlet of the flat nozzles.

[0026] A flat nozzle refers to a nozzle with a flat air outlet structure, its cross-section being rectangular or elliptical. Closely adjacent inclined installation means the nozzle is fixed close to the surface of the ductwork at a 15-45 degree angle, with the nozzle axis arranged at an acute angle to the radial direction of the ductwork. Small blowholes, with a diameter of 0.5-2 mm, are arranged in a linear array or staggered pattern on the nozzle outlet end face. As a preferred embodiment, the blowhole spacing is 3-5 times the orifice diameter. Further, the blowholes can be configured as tapered holes, with the inlet diameter larger than the outlet diameter. Specifically, the nozzle can be made of stainless steel or wear-resistant engineering plastic and connected to the ductwork via threads or clamps.

[0027] This technical solution utilizes a flat nozzle structure combined with densely distributed fine air holes to create a continuous airflow curtain on the return belt surface. The inclined installation method ensures the airflow acts on the adhered material at the optimal impact angle, and the high-speed airflow generated by the fine air holes can penetrate the material accumulation layer. Compared to traditional circular nozzles, the flat nozzle increases the airflow coverage area by approximately 40% and the effective sweeping width per unit air pressure by 25%. Experimental data shows that at a working pressure of 0.7 MPa, this structure achieves a coal slime removal efficiency of over 92%, and improves airflow energy utilization by 30%. Therefore, under the same energy consumption conditions, it ensures effective cleaning while avoiding damage to the conveyor belt material from high-pressure airflow.

[0028] Furthermore, this application also proposes that the rotating assembly includes a slide groove opened on the side of the frame, a sliding block slidably connected to the slide groove, a support tube fixed to the outside of the sliding block, the support tube rotatably supporting the rotating block that fixes the air supply pipe, and multiple insertion holes opened on the slide groove, into which fixing pins for fixing the sliding block are inserted.

[0029] Specifically, the chute can adopt a linear or guide rail structure, and the sliding block cooperates with the chute to achieve smooth movement. The support tube and the rotating block can be rotatably supported by bearings or bushings. The rotating block can adopt a split structure for easy installation and fixation of the air supply pipe. The insertion holes are evenly spaced along the length of the chute, and the fixing pins can be spring pins or threaded pins, allowing the sliding block to be positioned and locked manually or automatically. As a preferred embodiment, the surface of the chute can be provided with scale markings for precise adjustment of the blowing angle.

[0030] Therefore, this technical solution achieves horizontal position adjustment of the blowing nozzle through the cooperation of the sliding groove and the sliding block, rotational adjustment of the blowing angle through the cooperation of the rotating block and the support tube, and precise positioning at multiple positions through the cooperation of the insertion hole and the fixing pin. Compared with existing technologies, this rotating component has a simple and reliable structure, convenient adjustment operation, and can quickly optimize blowing parameters according to different material characteristics and belt running conditions, effectively solving the problem of poor adaptability of traditional fixed blowing devices. In specific implementation, manual or automatic adjustment can be selected according to actual working conditions, and maintenance personnel can complete the angle adjustment without special tools, significantly reducing maintenance difficulty and workload.

[0031] Furthermore, this application also proposes that the air duct is controlled and started through a linkage system, the linkage system including a controller, the controller being electrically connected to the control valve on the air supply pipe, and the controller being electrically connected to the drive motor of the belt roller.

[0032] The controller in the linkage system can be a PLC controller, used to receive the operating signal of the drive motor and control the opening and closing of the control valve. The control valve can be a solenoid valve or a pneumatic valve, used to regulate the airflow in the air supply pipe. The control logic of the linkage system can be set so that when the drive motor starts, the controller automatically opens the control valve, allowing the blower nozzle to start working; when the drive motor stops, the controller delays closing the control valve to ensure that residual material is removed. The connection between the air supply pipe and the high-pressure air source pipe can use a quick connector for easy disassembly and maintenance.

[0033] Specifically, this technical solution achieves automatic control of the wind-powered sweeping device through a linkage system, solving the problem of manual operation required by traditional sweeping devices. When the drive motor of the belt roller starts, the controller automatically opens the control valve of the air supply pipe, causing the blower nozzles to start working; when the drive motor stops, the controller delays closing the control valve to ensure that residual material is removed. This not only reduces manual intervention but also improves cleaning efficiency and reliability. Compared with existing technologies, this solution reduces maintenance workload through automated control and avoids incomplete cleaning caused by untimely manual operation.

[0034] Furthermore, this application also proposes to provide a discharge box at the lower part of the outlet of the belt roller, with one side of the discharge box extending to the outside of the blower nozzle.

[0035] The material discharge box is welded from sheet metal, with a top opening slightly wider than the conveyor belt, and a sloping bottom design to facilitate material discharge. A guide plate extends from the box to the outside of the blower nozzle, collecting and guiding any adhering material blown down into the box. The material discharge box can be bolted to the frame beam, and its installation position can be adjusted forward or backward according to site conditions.

[0036] This technical solution effectively solves the problem of material scattering after purging by incorporating a discharge box with an extended structure. Specifically, when high-pressure airflow removes adhering material from the return belt through the blower nozzles, the blown-off material splashes under the influence of the airflow, and the discharge box extending to the outside of the nozzles can completely catch the scattered material. The inclined bottom design allows the material to automatically slide to the designated collection location, avoiding manual cleaning. Compared with existing technologies, this structure significantly improves the integration of the cleaning system, reduces secondary pollution on site, and lowers the workload of maintenance personnel.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A non-contact belt conveyor belt pneumatic cleaning device, comprising a frame (1) and a rotating support belt roller (2), the belt roller (2) supporting a conveyor belt (3), and a tension roller (5) provided on the return belt (4) at the lower part of the conveyor belt (3), characterized in that: The front end of the tension roller (5) is supported by an air duct (7), and a number of air nozzles (8) for blowing off the material adhering to the return belt (4) are installed on the air duct (7). The air nozzles (8) are used to adjust the blowing angle through a rotating component set on the frame (1). The two ends of the air duct (7) are rotatably supported on the inside of the frame (1). The end of the air duct (7) is connected to the air supply pipe (6). An accumulator (61) is installed on the air supply pipe (6). The air supply pipe (6) is connected to the high-pressure air source pipe through a hose. The rotating assembly includes a slide groove (14) on the side of the frame (1), a sliding block (13) is slidably connected to the slide groove (14), a support tube (12) is fixed to the outside of the sliding block (13), the support tube (12) rotatably supports a rotating block (11) that fixes the air supply pipe (6), and a plurality of insertion holes (15) are opened on the slide groove (14), and a fixing pin (16) for fixing the sliding block (13) is inserted into the insertion hole (15).

2. The non-contact belt conveyor air-powered cleaning device according to claim 1, characterized in that: Several of the blower nozzles (8) are flat nozzles and are installed at an angle close to the air duct (7). The outlet of the flat nozzle has multiple small blow holes.

3. The non-contact belt conveyor belt pneumatic cleaning device according to claim 2, characterized in that: The air duct (7) is controlled and started by a linkage system, which includes a controller (10). The controller (10) is electrically connected to the control valve (9) on the air supply pipe (6) and to the drive motor of the belt roller (2).

4. The non-contact belt conveyor belt pneumatic cleaning device according to claim 1, characterized in that: A material drop box (17) is provided at the lower part of the outlet of the belt roller (2), and one side of the material drop box (17) extends to the outside of the blower nozzle (8).

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