Screw type coal cleaning device of belt conveyor

Abstract

The utility model relates to a spiral coal cleaning device of a belt conveyor, which comprises a rack, a coal cleaning component is arranged at the lower part of the rack, the coal cleaning component comprises a bottom plate, a coal cleaning roller, a spring and a limiting roller, an upper carrier roller group is used for supporting an upper belt of a belt in the belt conveyor, and the coal cleaning roller is used for supporting a lower belt of the belt; the coal cleaning roller comprises a straight roller and a spiral strip arranged on the periphery of the straight roller, fixing blocks are arranged at the two ends of the straight roller, floating shafts are arranged on the lower sides of the fixing blocks, the floating shafts are inserted into the bottom plate in the vertical direction, and the floating shafts are sleeved with springs. The axial direction of the limiting roller is arranged in the vertical direction, and the lower portion of the limiting roller is connected to the upper side of the fixing block. The two limiting rollers are located at the two ends of the straight roller correspondingly and used for preventing the conveying belt from deviating. When the device is used for cleaning the adhered materials, the belt is cleaner, the cleaned materials only fall in a small range, and regular cleaning is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors in the coal industry, in particular to a spiral coal cleaning device for a belt conveyor. Background Art

[0002] Coal mined directly from the mine is called raw coal. Many impurities are mixed into the raw coal during the mining process, and the quality of coal is also different. Coal with low intrinsic ash content and coal with high intrinsic ash content are mixed together. Coal washing is an indispensable process, which is an industrial process to remove impurities from raw coal or to classify high-quality coal and low-quality coal. The washed coal is transported by a belt conveyor. After washing, the coal has a certain adhesion and is easy to adhere to the belt. During the transportation process, some coal slag falls from the upper belt, and some enters between the roller and the lower side of the upper belt, which may cause the belt to slip, run off, etc. The utility model patent with authorization announcement number CN208916162U discloses a device to prevent coal from sticking to the surface of the guide roller, which uses a spiral roller to clean the outer periphery of the tail roller.

[0003] When the belt with coal attached moves to the side facing the ground, part of the coal slag and sewage will fall onto the ground of the conveying channel without regularity. The coal slag and sewage will fall over a long distance, making it inconvenient to clean. Utility Model Content

[0004] The utility model aims to provide a spiral coal cleaning device for a belt conveyor, which can clean the lower belt surface of the belt of the conveyor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A spiral coal cleaning device for a belt conveyor comprises a frame, a plurality of upper roller groups are arranged on the upper side of the frame, a coal cleaning assembly is arranged at the lower part of the frame, the coal cleaning assembly comprises a bottom plate, a coal cleaning roller, a spring and a limit roller, the upper roller group is used to support the upper belt of the belt conveyor, the coal cleaning roller is used to support the lower belt of the belt, and clean the lower side of the lower belt;

[0007] The coal cleaning roller comprises a straight roller and a spiral strip arranged on the outer periphery of the straight roller, fixed blocks are arranged at both ends of the straight roller, a floating shaft is arranged on the lower side of the fixed block, the floating shaft is inserted on the bottom plate in the up-down direction, and the spring is sleeved on the floating shaft;

[0008] The axial direction of the limiting roller is arranged along the up-down direction, and the lower part of the limiting roller is connected to the upper side of the fixed block; there are two limiting rollers, which are respectively located at the two ends of the straight roller to prevent the conveyor belt from deviating.

[0009] Furthermore, the lower part of the floating shaft is provided with an external thread structure for cooperating with a nut, and the nut is located on the lower side of the bottom plate.

[0010] Furthermore, the spiral strips include a forward spiral strip and a reverse spiral strip, the forward spiral strip and the reverse spiral strip are both made of threaded steel, and the forward spiral strip and the reverse spiral strip are welded to the outer circumference of the straight roller.

[0011] Furthermore, a shaft sleeve is provided on the upper side of the base plate, and the shaft sleeve has a through hole extending from top to bottom for the floating shaft to pass through; a blind hole is provided on the periphery of the through hole for the lower part of the spring to be placed in, and the upper end of the spring abuts against the fixed block.

[0012] Furthermore, a side panel is respectively provided on both side edges in the width direction of the bottom plate.

[0013] Furthermore, a baffle is hingedly connected to both side edges of the bottom plate in the length direction, and bolt holes are provided on the upper part of the baffle for connection with the frame; the baffle has a vertical fixed position and an open position after being flipped outward.

[0014] Furthermore, a hand hole is provided on the baffle below the bolt hole.

[0015] Beneficial effects of the utility model:

[0016] When the utility model of the spiral coal cleaning device for belt conveyor is used, the belt runs along with the belt conveyor, and utilizes friction to drive the coal cleaning roller to rotate. When the coal particles adhered to the lower side of the lower belt touch the coal cleaning roller, the spiral strips on the surface of the coal cleaning roller can clean them, and the cleaned coal particles have the effect of conveying them to both sides respectively. Using this device to clean the adhered materials not only makes the belt cleaner, but also the cleaned materials only fall into a small range, which is convenient for regular cleaning.

[0017] The limiting rollers arranged on both sides can also prevent the belt from deviating to a certain extent.

[0018] The side panels and baffle structures are used to prevent the cleaned coal from flying around. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the spiral coal cleaning device of the belt conveyor of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of the spiral coal cleaning device of the belt conveyor of the utility model (the baffle is in the open position);

[0021] Figure 3 It is a structural view of a coal cleaning component in a spiral coal cleaning device for a belt conveyor according to the utility model.

[0022] 1. Frame; 2. Upper roller group; 3. Coal cleaning roller; 31. Forward spiral bar; 32. Reverse spiral bar; 33. Fixed block; 4. Bottom plate; 41. Side panel; 42. Bushing; 5. Baffle; 51. Hand hole; 6. Limit roller; 7. Spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0024] Embodiments of the present utility model:

[0025] like Figure 1-Figure 3 As shown, a spiral coal cleaning device for a belt conveyor includes a frame 1, a plurality of upper roller groups 2 are provided on the upper side of the frame 1, and a plurality of lower rollers (not shown) are provided at the lower part of the frame 1; the attached drawings of this embodiment only show the structure of part of the belt conveyor. The upper roller group 2 is used to support the upper belt of the belt in the belt conveyor, and the upper roller group 2 is a three-section roller structure, which is a structure in the prior art. The lower roller is a straight roller, which is also a structure in the prior art, and is used to support the lower belt of the belt in the belt conveyor. In this embodiment, for the convenience of description, the belts wrapped around the rollers at both ends of the belt conveyor are defined as upper belts and lower belts. This is a relative definition, not that a certain section of the belt is always the upper belt or the lower belt. It can be understood that the lower belt is the unloaded section. The utility model is designed to address the problem of coal adhering to the lower side of the lower belt. The following is an introduction to the improved part:

[0026] A coal cleaning assembly is provided at the lower part of the frame 1, and the coal cleaning assembly includes a bottom plate 4, a coal cleaning roller 3, a spring 7 and a limiting roller 6. The coal cleaning roller 3 is used to support the lower belt of the belt and clean the lower side of the lower belt.

[0027] The coal cleaning roller 3 includes a straight roller and a spiral strip arranged on the outer periphery of the straight roller. The coal cleaning roller 3 is located on the side close to the tail roller of the belt conveyor and cleans the belt after unloading. Fixed blocks 33 are provided at both ends of the straight roller. A floating shaft is provided on the lower side of the fixed block 33. The floating shaft is inserted on the above-mentioned bottom plate 4 in the up and down direction. The straight roller is also a non-powered roller. If the fixed block does not move, the outer cylinder of the straight roller can rotate freely when subjected to force. The principle is the same as that of the roller on the existing belt conveyor.

[0028] The axial direction of the limiting roller 6 is set in the up-down direction, and the lower part of the limiting roller 6 is connected to the upper side of the fixed block 33; there are two limiting rollers 6, which are located at both ends of the straight roller to prevent the conveyor belt from running off. The limiting roller 6 is based on the same principle as the roller on the existing belt conveyor, and can rotate freely when the outer periphery is subjected to force. The distance between the two limiting rollers 6 is appropriately larger than the width of the belt.

[0029] The spring 7 is sleeved on the floating shaft, and the upper end of the spring 7 abuts against the fixed block 33 to buffer the floating shaft. The lower part of the floating shaft is provided with an external thread structure for cooperating with a nut, and the nut is located on the lower side of the bottom plate 4. The upward limit position of the floating shaft is locked by the nut, allowing the floating shaft to float within a set amplitude range. Of course, the compression degree of the spring 7 can also be adjusted by using the nut.

[0030] A shaft sleeve 42 is provided on the upper side of the bottom plate 4. The shaft sleeve 42 has a through hole extending from top to bottom for the floating shaft to pass through. The shaft sleeve 42 has a blind hole on the periphery of the through hole for the lower part of the spring 7 to be inserted. The spring 7 is sleeved on the floating shaft, and the upper end of the spring 7 abuts against the fixed block. The shaft sleeve 42 can make the floating shaft and the spring 7 more stable.

[0031] The spiral strips include a forward spiral strip 31 and a reverse spiral strip 32. Both the forward spiral strip 31 and the reverse spiral strip 32 are made of threaded steel. The forward spiral strip 31 and the reverse spiral strip 32 are wound in a spiral direction and then welded to the outer circumference of the straight roller. In other embodiments, conventional round steel can also be used. The forward spiral strip 31 and the reverse spiral strip 32 have opposite rotation directions. The forward spiral strip 31 and the reverse spiral strip 32 have the same length and are both set outward from the middle position of the straight roller and extend to the end of the circumferential section of the straight roller.

[0032] When in use, the belt runs, driving the coal cleaning roller 3 to rotate. When the coal particles adhered to the lower side of the lower belt touch the coal cleaning roller 3, the spiral bars on the surface of the coal cleaning roller 3 can clean them and transport the cleaned coal particles to both sides respectively (due to the action of the forward and reverse spiral bars 32).

[0033] A side panel 41 is provided on both sides of the bottom plate 4 in the width direction.

[0034] A baffle 5 is hinged on both sides of the bottom plate 4 in the length direction. Bolt holes are provided on the upper part of the baffle 5 for connecting with the frame 1. The baffle 5 has a vertical fixed position and an open position after flipping outward. The baffle 5 can be hinged by hinges. The upper part of the baffle 5 is connected to the frame 1 by bolts, and the baffle 5 is in a fixed position, which can stop the cleaned coal particles. In addition, the side panels 41 are set to prevent the cleaned coal particles from falling on the ground in a disorderly manner. When maintenance or water washing of the coal cleaning roller 3 and other structures is required, the baffle 5 can be flipped open.

[0035] A hand hole 51 is provided below the bolt hole on the baffle plate 5, so that a hand can be inserted into the baffle plate 5 during operation, which is convenient for operation and can also reduce the material and weight of the baffle plate 5. Because the blocking effect is mainly concentrated on the lower side, the hand hole 51 structure does not affect the operation.

Claims

1. A spiral coal cleaning device for a belt conveyor, characterized in that: It comprises a frame, a plurality of upper roller groups are arranged on the upper side of the frame, a coal cleaning assembly is arranged at the lower part of the frame, the coal cleaning assembly comprises a bottom plate, a coal cleaning roller, a spring and a limit roller, the upper roller group is used to support the upper belt of the belt conveyor, the coal cleaning roller is used to support the lower belt of the belt, and clean the lower side of the lower belt; The coal cleaning roller comprises a straight roller and a spiral strip arranged on the outer periphery of the straight roller, fixed blocks are arranged at both ends of the straight roller, a floating shaft is arranged on the lower side of the fixed block, the floating shaft is inserted on the bottom plate in the up-down direction, and the spring is sleeved on the floating shaft; The axial direction of the limiting roller is arranged along the up-down direction, and the lower part of the limiting roller is connected to the upper side of the fixed block; there are two limiting rollers, which are respectively located at the two ends of the straight roller to prevent the conveyor belt from deviating.

2. The spiral coal cleaning device for belt conveyor according to claim 1 is characterized in that: The lower part of the floating shaft is provided with an external thread structure for cooperating with a nut, and the nut is located at the lower side of the bottom plate.

3. The spiral coal cleaning device for belt conveyor according to claim 1 is characterized in that: The spiral strips include a forward spiral strip and a reverse spiral strip, both of which are made of threaded steel bars, and are welded to the outer circumference of the straight roller.

4. The spiral coal cleaning device for belt conveyor according to claim 1, characterized in that: A shaft sleeve is arranged on the upper side of the bottom plate, and the shaft sleeve has a through hole which passes through from top to bottom for the floating shaft to pass through; a blind hole is arranged on the periphery of the through hole for the lower part of the spring to be placed, and the upper end of the spring abuts against the fixing block.

5. The spiral coal cleaning device for belt conveyor according to claim 4 is characterized in that: A side panel is respectively provided on both side edges of the bottom plate in the width direction.

6. The spiral coal cleaning device for belt conveyor according to claim 4, characterized in that: A baffle is hinged on both sides of the bottom plate in the length direction, and bolt holes are arranged on the upper part of the baffle for connecting with the frame; the baffle has a vertical fixed position and an open position after being turned outward.

7. The spiral coal cleaning device for belt conveyor according to claim 6, characterized in that: A hand hole is provided on the baffle below the bolt hole.

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