Self-cleaning device for accumulated materials at bottom of roller of magnetic separator

Abstract

The utility model discloses a magnetic separator roller bottom accumulated material self-cleaning device which comprises a plurality of cleaning mechanisms which are symmetrically arranged along the circumference of a magnetic separator roller at intervals, and each cleaning mechanism is fixedly connected with the outer wall of the roller in the length direction. The end, away from the roller, of each cleaning mechanism is of a zigzag structure, and concave-convex openings of every two adjacent cleaning mechanisms are staggered. The cleaning mechanisms are of a zigzag structure, the cleaning mechanisms are symmetrically arranged on the roller and synchronously rotate along with rotation of the roller, the protruding faces of the cleaning mechanisms clean and divide accumulated materials at the bottom of the roller, abrasion of the accumulated materials at the bottom of the roller to a roller skin of the magnetic separator is avoided, and the service life of the magnetic separator is prolonged; and meanwhile, obstruction of large accumulated materials to the cleaning mechanism is reduced, and the cleaning efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of coal washing and beneficiation equipment, and in particular to a self-cleaning device for material accumulation at the bottom of a magnetic separator drum. Background Technology

[0002] Magnetic separators, as the main heavy medium recovery equipment in heavy medium coal preparation plants, are a crucial production step in the heavy medium coal preparation process. The performance of magnetic separators directly affects the recovery of heavy media and reflects the management level of the coal preparation plant. During normal operation, due to the nature of the feed material, material easily accumulates at the bottom of the magnetic separator drum, causing severe wear on the drum shell. If the accumulated material is not cleaned in time, it will cause uneven discharge from the magnetic separator, overflow surface turbulence, affecting the recovery effect of heavy media in coal preparation and increasing production and operating costs. In most heavy medium coal preparation plants in my country, the cleaning of magnetic separators is mainly done by processing special tools to remove the accumulated material at the bottom of the magnetic separator. This poses a safety hazard during production and operation. Untimely cleaning will affect the recovery effect of heavy media and increase the wear of the magnetic separator drum shell. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a self-cleaning device for the bottom of a magnetic separator drum. The cleaning mechanism of this invention adopts a sawtooth structure and is symmetrically arranged on the drum, rotating synchronously with the drum. The protrusions of the cleaning mechanism clean and divide the accumulated material at the bottom of the drum, avoiding wear on the drum shell caused by the accumulated material at the bottom of the drum, extending the service life of the magnetic separator, and reducing the obstruction of the cleaning mechanism by large pieces of accumulated material, thereby improving the cleaning efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a self-cleaning device for material accumulation at the bottom of a magnetic separator drum, comprising multiple cleaning mechanisms, which are symmetrically arranged at intervals along the circumference of the magnetic separator drum. Each cleaning mechanism is fastened to the outer wall of the drum along its length. The end of each cleaning mechanism away from the drum has a serrated structure, and the concave and convex openings of two adjacent cleaning mechanisms are staggered.

[0005] Preferably, the cleaning mechanism is a square plate, and the cleaning mechanism is welded to the outer wall of the drum along its length.

[0006] Preferably, the cleaning mechanism includes a connecting plate and a cleaning plate. The connecting plate is an arc-shaped plate with an arc that matches the arc of the outer wall of the roller. The cleaning plate is perpendicular to the outer wall of the connecting plate. The cleaning plate is a square plate with the same length as the connecting plate. The connecting plate is tightly attached to and securely connected to the outer wall of the roller.

[0007] Preferably, a reinforcing plate is provided on the side of the cleaning mechanism away from the force-bearing surface. The reinforcing plate is a square plate and there are multiple reinforcing plates. Each cleaning mechanism is provided with a reinforcing plate. The reinforcing plates are arranged along the length direction of the cleaning mechanism to facilitate support of the cleaning mechanism. The two ends of each reinforcing plate are respectively connected to the outer wall of the cleaning mechanism near the sawtooth part and the roller.

[0008] Preferably, both the cleaning mechanism and the reinforcing plate are made of 3mm thick non-magnetic stainless steel.

[0009] Preferably, the cleaning plate has a length of 2400mm and a width of 25mm.

[0010] This utility model has the following advantages compared with the prior art:

[0011] 1. The cleaning mechanism of this utility model adopts a sawtooth structure. The cleaning mechanism is symmetrically arranged on the drum and rotates synchronously with the drum. The protrusions of the cleaning mechanism clean and divide the accumulated material at the bottom of the drum, avoiding the wear caused by the accumulated material at the bottom of the drum on the magnetic separator drum skin, extending the service life of the magnetic separator, and reducing the obstruction of large pieces of accumulated material to the cleaning mechanism, thus improving the cleaning efficiency.

[0012] 2. The sawtooth structure of the cleaning mechanism of this utility model has its concave and convex openings staggered. When the drum rotates once, it drives multiple cleaning mechanisms on its outer side to clean the accumulated material once, which solves the problem of partial leakage of accumulated material at the bottom of the drum.

[0013] 3. This utility model improves cleaning efficiency by setting multiple cleaning mechanisms on the outside of the drum, which work together to clean up the accumulated material.

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model installed on a magnetic separator;

[0016] Figure 2 This is a schematic diagram showing the connection between the cleaning mechanism and the drum.

[0017] Figure 3 This is a schematic diagram of another structure for the cleaning mechanism;

[0018] Figure 4 This is a schematic diagram illustrating the connection between the reinforcing plate, the cleaning mechanism, and the roller.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1—Cleaning mechanism; 2—Roller; 3—Connecting plate;

[0021] 4—Cleansing plate; 5—Reinforcing plate. Detailed Implementation

[0022] like Figure 1 , Figure 2 As shown, this utility model discloses a self-cleaning device for material accumulation at the bottom of a magnetic separator drum, including multiple cleaning mechanisms 1. The multiple cleaning mechanisms 1 are symmetrically arranged at intervals along the circumference of the magnetic separator drum 2. Each cleaning mechanism 1 is fastened to the outer wall of the drum 2 along the length direction. The end of each cleaning mechanism 1 away from the drum 2 has a sawtooth structure, and the concave and convex openings of two adjacent cleaning mechanisms 1 are staggered.

[0023] In this embodiment, there are two cleaning mechanisms 1, which are symmetrically arranged on the outer wall of the magnetic separator drum 2. The serrated protrusions of the two cleaning mechanisms 1 are staggered. The cleaning mechanism 1 rotates synchronously with the drum 2. When the cleaning mechanism 1 rotates to the bottom of the drum 2, it pushes the accumulated material to move synchronously. The serrated structure of the cleaning mechanism 1 can not only push the accumulated material, but also divide the accumulated material, so as to avoid the excessive accumulation of material affecting the rotation of the cleaning mechanism 1 and thus affecting the operation of the magnetic separator. This improves the cleaning efficiency of the cleaning mechanism 1 in cleaning the accumulated material. The staggered protrusions of the two adjacent cleaning mechanisms 1 make it easy for the cleaning mechanism 1 to clean the accumulated material at the bottom of the drum 2 once with one rotation of the drum 2, so as to achieve staggered cleaning of the accumulated material.

[0024] Furthermore, there are four cleaning mechanisms 1, which are arranged along the circumference of the drum 2. The included angle between any two adjacent cleaning mechanisms 1 is 90°, and the concave and convex openings of the two adjacent cleaning mechanisms 1 are staggered. The cleaning mechanism 1 cleans the accumulated material at the bottom of the drum 2 twice as the drum 2 rotates once, thereby improving the cleaning efficiency of the cleaning mechanism 1.

[0025] There is no limit to the number of cleaning mechanisms 1 on the outside of the roller 2. Depending on the production situation, a corresponding number of cleaning mechanisms 1 can be set on the outer wall of the roller 2. The number of cleaning mechanisms 1 can be two, three or four, and the number of cleaning mechanisms 1 is determined according to the production situation.

[0026] like Figure 2 As shown, the cleaning mechanism 1 is a square plate, and the cleaning mechanism 1 is welded to the outer wall of the roller 2 along the length direction.

[0027] In this embodiment, the cleaning mechanism 1 is welded to the outer wall of the drum 2 along the length direction. The width of the cleaning mechanism 1 is smaller than the bottom gap of the drum 2. The cleaning mechanism 1 is perpendicular to the tangential surface of the drum 2 to ensure the pushing force of the cleaning mechanism 1 on the accumulated material. When the cleaning mechanism 1 rotates with the drum 2, it pushes the accumulated material at the bottom of the drum 2 to move synchronously and transports the accumulated material to the feed pipe of the magnetic separator for magnetic separation operation again.

[0028] In another possible embodiment, the end of the cleaning mechanism 1 away from the roller 2 along the width direction is a triangular structure. The triangular structures of the two cleaning mechanisms 1 are oriented in opposite directions, which facilitates the two cleaning mechanisms 1 to form a directional structure after overlapping along the triangular structure. Each triangular structure of the cleaning mechanism 1 has a serrated structure along the hypotenuse. The hypotenuse vertices of the triangular structures of two adjacent cleaning mechanisms 1 are oriented in opposite directions, which facilitates the cleaning mechanism 1 with the vertices of the two hypotenuses located inside the cleaning mechanism 1 to clean the accumulated material on both sides of the roller 2 along the length direction, and pushes the accumulated material on both sides of the roller 2 along the length direction inward, so as to avoid excessive material accumulation on both sides of the roller 2 and wear on the outer wall of the roller 2.

[0029] like Figure 3 As shown, the cleaning mechanism 1 includes a connecting plate 3 and a cleaning plate 4. The connecting plate 3 is an arc-shaped plate with an arc that matches the arc of the outer wall of the roller 2. The cleaning plate 4 is perpendicular to the outer wall of the connecting plate 3 and is a square plate. The lengths of the cleaning plate 4 and the connecting plate 3 are the same. The connecting plate 3 is in close contact with the outer wall of the roller 2 and is securely connected to the roller 2.

[0030] In this embodiment, since the curvature of the connecting plate 3 is consistent with the curvature of the outer wall of the roller 2, the connecting plate 3 can be tightly attached to the outer wall of the roller 2. The connecting plate 3 is welded to the outer wall of the roller 2, and the cleaning plate 4 is welded to the outer wall of the connecting plate 3. The distance between the two sides of the cleaning plate 4 and the end of the connecting plate 3 along the arc length is the same. The cleaning plate 4 is fixed by welding the connecting plate 3 to the outer wall of the roller 2. The cleaning plate 4 rotates synchronously with the rotation of the roller 2 to clean the accumulated material. At the same time, the parts of the connecting plate 3 located on the front and rear sides of the cleaning plate 4 are welded to the roller 2. When the cleaning plate 4 is cleaning the accumulated material, the parts of the connecting plate 3 located on the front and rear sides of the cleaning plate 4 pull and push the connection between the cleaning plate 4 and the connecting plate 3, thus extending the service life of the cleaning plate 4.

[0031] In another possible embodiment, a reinforcing plate 5 is provided on the side of the cleaning plate 4 away from the force-bearing surface. The two ends of the reinforcing plate 5 are respectively connected to the connecting plate 3 and the cleaning plate 4. The connecting plate 3 is welded to the roller 2. The reinforcing plate 5 supports the cleaning plate 4, preventing the cleaning plate 4 from being unable to clean the accumulated material due to severe deformation, and extending the service life of the cleaning plate 4.

[0032] like Figure 4 As shown, a reinforcing plate 5 is provided on the side of the cleaning mechanism 1 away from the force-bearing surface. The reinforcing plate 5 is a square plate and there are multiple plates. Each cleaning mechanism 1 is provided with a reinforcing plate 5. The reinforcing plate 5 is arranged along the length direction of the cleaning mechanism 1 to facilitate support of the cleaning mechanism 1. The two ends of each reinforcing plate 5 are connected to the outer wall of the cleaning mechanism 1 near the sawtooth part and the roller 2, respectively.

[0033] In this embodiment, the reinforcing plate 5 has the same length as the cleaning mechanism 1. The reinforcing plate 5 is connected to the side wall of the roller 2 along its length. The end of the reinforcing plate 5 away from the roller 2 is connected to the end of the cleaning mechanism 1 away from the roller 2. The end of the reinforcing plate 5 is located on the upper side of the sawtooth structure of the cleaning mechanism 1. The reinforcing plate 5, the cleaning mechanism 1 and the side wall of the roller 2 form a triangular support structure. By utilizing the stability of the triangle, the stability of the cleaning mechanism 1 is improved by the reinforcing plate 5, and the end of the cleaning mechanism 1 away from the roller 2 is prevented from bending and deforming under the action of accumulated material, which would affect the cleaning of the accumulated material by the cleaning mechanism 1. The reinforcing plate 5 supports the cleaning mechanism 1 to remain perpendicular to the tangent of the roller 2, thus extending the service life of the cleaning mechanism 1.

[0034] In another possible embodiment, each cleaning mechanism 1 is provided with three reinforcing plates 5 on the side away from the force-bearing surface. The three reinforcing plates 5 are the same size and are equally spaced. The cleaning mechanism 1 is supported by the three reinforcing plates 5. According to the mechanical principle, the three reinforcing plates 5 are respectively set at both ends of the cleaning mechanism 1 near the end and at the middle of the cleaning mechanism 1 along the length direction. The distance between each pair of adjacent reinforcing plates 1 is the same, which saves material usage.

[0035] Both the cleaning mechanism 1 and the reinforcing plate 5 are made of 3mm thick non-magnetic stainless steel.

[0036] The cleaning plate 4 is 2400mm long and 25mm wide.

[0037] In use, cleaning mechanisms 1 of the same length as the length of roller 2 are set, and the width of cleaning mechanism 1 is set according to the gap at the bottom of roller 2, so that the width of cleaning mechanism 1 is smaller than the gap at the bottom of roller 2. Two cleaning mechanisms 1 are made of 3mm thick non-magnetic stainless steel according to the above rules. A serrated structure with concave and convex shapes is set on one side of cleaning mechanism 1 along its length. The end of cleaning mechanism 1 away from the serrated structure along its width is kept horizontal. The concave and convex openings of the serrated structures of the two cleaning mechanisms 1 are staggered to facilitate the cleaning of accumulated material. The two cleaning mechanisms 1 are arranged along their length... The cleaning mechanisms are symmetrically installed on the outer wall of the drum 2. When the magnetic separator is working, the drum 2 drives the cleaning mechanism 1 to rotate synchronously. When the cleaning mechanism 1 rotates to the bottom of the drum 2, it pushes the accumulated material at the bottom of the drum 2 forward and pushes the accumulated material at the bottom of the drum 2 to the feed pipe of the magnetic separator. The concave and convex openings of the two cleaning mechanisms 2 are misaligned. When the drum 2 rotates once, it drives the two cleaning mechanisms 2 to clean the accumulated material at the bottom of the drum 2 once. The serrated structure of the cleaning mechanism 2 pushes the accumulated material and divides it at the same time, so as to avoid large pieces of accumulated material from affecting the rotation of the cleaning mechanism 2 and thus affecting the operation of the magnetic separator.

[0038] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum, characterized in that: It includes multiple cleaning mechanisms (1), which are symmetrically arranged at intervals along the circumference of the magnetic separator drum (2). Each cleaning mechanism (1) is fastened to the outer wall of the drum (2) along the length direction. The end of each cleaning mechanism (1) away from the drum (2) is a sawtooth structure. The concave and convex openings of two adjacent cleaning mechanisms (1) are staggered.

2. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum according to claim 1, characterized in that: The cleaning mechanism (1) is a square plate, and the cleaning mechanism (1) is welded to the outer wall of the roller (2) along the length direction.

3. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum according to claim 1, characterized in that: The cleaning mechanism (1) includes a connecting plate (3) and a cleaning plate (4). The connecting plate (3) is an arc-shaped plate with an arc that matches the arc of the outer wall of the roller (2). The cleaning plate (4) is perpendicular to the outer wall of the connecting plate (3). The cleaning plate (4) is a square plate. The lengths of the cleaning plate (4) and the connecting plate (3) are the same. The connecting plate (3) is in close contact with the outer wall of the roller (2) and is securely connected to the roller (2).

4. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum according to claim 1, characterized in that: The cleaning mechanism (1) is provided with a reinforcing plate (5) on the side away from the force-bearing surface. The reinforcing plate (5) is a square plate and there are multiple plates. Each cleaning mechanism (1) is provided with a reinforcing plate (5). The reinforcing plate (5) is arranged along the length direction of the cleaning mechanism (1) to facilitate support of the cleaning mechanism (1). The two ends of each reinforcing plate (5) are respectively connected to the outer wall of the cleaning mechanism (1) near the sawtooth part and the roller (2).

5. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum according to claim 4, characterized in that: The cleaning mechanism (1) and the reinforcing plate (5) are both made of 3mm thick non-magnetic stainless steel.

6. A self-cleaning device for material accumulation at the bottom of a magnetic separator drum according to claim 3, characterized in that: The cleaning plate (4) is 2400mm long and 25mm wide.

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