A screen cleaning device for a trommel screen

Abstract

The utility model relates to a drum screen equipment technical field especially relates to a kind of screen cleaning device for drum screen. Including the drum screen body being rotatably arranged on support frame, support frame is fixed with cover body, cover body is rotatably provided with brush roll, brush roll is between cover body and drum screen body, bristle on brush roll contacts drum screen body, the rotating direction of brush roll and drum screen body is opposite, further include vibration mechanism, vibration mechanism includes limiting cylinder, vibrating ball and fixed plate, limiting cylinder is fixed in the side of cover body close to drum screen body, limiting cylinder lower end opening is arranged, vibrating ball is located in limiting cylinder and lower end contacts to drum screen body, fixed plate is fixed on drum screen body, limiting cylinder is provided with through slot.In the cover body set up and the brush roll of the reverse rotation of drum screen body to clean the aluminum dust on drum screen body, simultaneously set up vibration mechanism to vibrate and fall the aluminum dust on drum screen body, reduce the probability of drum screen body blockage, improve the screening accuracy of drum screen.

Description

Technical Field

[0001] This utility model relates to the technical field of drum screen equipment, and in particular to a screen cleaning device for drum screens. Background Technology

[0002] The rotary drum screen is a key component of a rotary drum screener. In the aluminum ash processing process, the raw material aluminum slag is ground by a ball mill and then enters the rotary drum screen for grading and screening. It can screen aluminum slag of different particle sizes. The rotary drum screen has high sorting accuracy and is widely used.

[0003] The existing drum screens are used frequently in daily production. The aluminum dust generated during the aluminum slag grading and screening process accumulates on the drum screen body, causing the screen holes on the drum screen body to be blocked. This affects the screening accuracy of the drum screen and reduces the quality of aluminum material production. Therefore, it is necessary to arrange workers to clean it regularly. However, the screen area is large and the efficiency of manual cleaning is low. Summary of the Invention

[0004] To address the problem that existing drum screens are prone to clogging after prolonged use, affecting the screening accuracy of subsequent drum screens, this utility model proposes a screen cleaning device for drum screens. It uses brush rollers on the cover that rotate in the opposite direction to the drum screen body to clean aluminum dust on the drum screen body. At the same time, a vibration mechanism is set to shake off the aluminum dust on the drum screen body, reducing the probability of clogging and improving the screening accuracy of the drum screen.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A screen cleaning device for a rotary screen includes a rotary screen body rotatably mounted on a support frame. A cover is fixed to the support frame, and a brush roller is rotatably mounted on the cover. The brush roller is located between the cover and the rotary screen body, with bristles on the brush roller contacting the rotary screen body. The brush roller and the rotary screen body rotate in opposite directions. The device also includes a vibration mechanism comprising a limiting cylinder, a vibrating ball, and a fixing plate. The limiting cylinder is fixed to the side of the cover near the rotary screen body, with an opening at its lower end. The vibrating ball is located inside the limiting cylinder, with its lower end contacting the rotary screen body. The fixing plate is fixed to the rotary screen body, and a through groove is provided on the limiting cylinder for the fixing plate to pass through. When the fixing plate rotates with the rotary screen body, it passes through the through groove, causing the vibrating ball to move upwards and then fall, thereby vibrating the rotary screen body.

[0007] Furthermore, the support frame is equipped with a power mechanism, and a rotating shaft is fixedly connected to the output end of the power mechanism. The rotating shaft coincides with the axis of the drum screen body, and a support rod is fixed on the rotating shaft. The end of the support rod is fixedly connected to the inner side wall of the drum screen body.

[0008] Furthermore, a support plate is fixed to the cover, the roller shaft of the brush roller is rotatably connected to the support plate, a gear is fixed to the roller shaft, and a gear ring is fixedly sleeved on the outer side of the drum screen body, the gear ring meshing with the gear. This enables the drum screen body and the brush roller to rotate in opposite directions.

[0009] Furthermore, the surface of the fixed plate that contacts the vibrating ball is a slope, and the surface away from the vibrating ball is parallel to one of the radial lines of the drum screen body. This improves the effect of the vibrating ball on vibrating the drum screen body.

[0010] Furthermore, the diameter of the screen holes on the drum screen body increases sequentially from small to large, and a feed pipe is provided on one side of the cover body, with the feed pipe located on the side of the drum screen body with smaller screen hole diameter.

[0011] Furthermore, a feeding hopper is fixed on the support frame, and the feeding hopper is located on the lower side of the drum screen body.

[0012] Furthermore, the lower end of the hopper is provided with multiple discharge ports, and a partition is fixed between two adjacent discharge ports, with the upper end of the partition in contact with the drum screen body.

[0013] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a drum screen body rotatably mounted on a support frame, and a brush roller rotatably mounted on a cover on the support frame. The brush roller contacts the drum screen body, and the rotation direction of the brush roller and the drum screen is opposite, thereby improving the cleaning effect of the brush roller on the drum screen. At the same time, a vibration mechanism is set on the side of the cover close to the drum screen body. When the drum screen body drives the fixed plate to rotate, the fixed plate passes through the through groove, drives the vibrating ball to move upward first and then fall down, thereby vibrating the drum screen body to shake off the aluminum dust on the drum screen body, reducing the probability of the drum screen body clogging and improving the screening accuracy of the drum screen. Attached Figure Description

[0014] Figure 1 This is an isometric view of a screen cleaning device for a drum screen according to the present invention;

[0015] Figure 2 This is a structural cross-sectional view of a screen cleaning device for a drum screen according to the present invention;

[0016] Figure 3 This utility model relates to a screen cleaning device for a drum screen. Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Figure 4 This utility model relates to a screen cleaning device for a drum screen. Figure 2 Enlarged view of the structure at point B;

[0018] Figure 5 This is a side view of a screen cleaning device for a drum screen according to the present invention;

[0019] Figure 6 This utility model relates to a screen cleaning device for a drum screen. Figure 5 Structural cross-sectional view at point AA;

[0020] Figure 7 This is a front view of a screen cleaning device for a drum screen according to the present invention;

[0021] Figure 8 This utility model relates to a screen cleaning device for a drum screen. Figure 7 Structural cross-sectional view at point BB;

[0022] Figure 9 This utility model relates to a screen cleaning device for a drum screen. Figure 8 Enlarged view of the structure at point C;

[0023] In the attached diagram, the following numbers are used: 1 is the support frame, 2 is the drum screen body, 3 is the cover, 4 is the brush roller, 5 is the limiting cylinder, 6 is the vibrating ball, 7 is the fixing plate, 8 is the through groove, 9 is the rotating shaft, 10 is the support rod, 11 is the support plate, 12 is the roller shaft, 13 is the gear, 14 is the gear ring, 15 is the feed pipe, 16 is the discharge hopper, 17 is the discharge port, 18 is the partition plate, 19 is the motor, and 20 is the fixing seat. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1-9 As shown, this embodiment provides a screen cleaning device for a drum screen, including a drum screen body 2 rotatably mounted on a support frame 1. The support frame 1 is equipped with a power mechanism. In this embodiment, the power mechanism is a motor 19, which is fixed on the support frame 1. A rotating shaft 9 is fixedly connected to the output end of the motor 19, and the rotating shaft 9 coincides with the axis of the drum screen body 2. A support rod 10 is fixed on the rotating shaft 9, and the end of the support rod 10 is fixedly connected to the inner side wall of the drum screen body 2. The end of the rotating shaft 9 passes through the drum screen body 2 and is rotatably mounted on a fixed seat 20 fixed on the support frame 1.

[0026] refer to Figure 2 and Figure 3 The support frame 1 is fixed with a cover 3, and a brush roller 4 is rotatably mounted on the cover 3. The brush roller 4 is located between the cover 3 and the drum screen body 2. The bristles on the brush roller 4 contact the drum screen body 2, and the rotation direction of the brush roller 4 is opposite to that of the drum screen body 2.

[0027] Specifically, a support plate 11 is welded and fixed to the cover 3. The roller shafts 12 at both ends of the brush roller 4 are rotatably connected to the support plate 11 on one side. A gear 13 is fixed on the roller shaft 12. A gear ring 14 is fixedly sleeved on the outer side of the drum screen body 2, and the gear ring 14 meshes with the gear 13. This enables the brush roller 4 and the drum screen body 2 to rotate in opposite directions.

[0028] refer to Figure 2 , Figure 4 , Figure 8 and Figure 9 The screen cleaning device for the drum screen also includes a vibration mechanism, which includes a limiting cylinder 5, a vibrating ball 6, and a fixing plate 7. The limiting cylinder 5 is fixed on the side of the cover 3 near the drum screen body 2. The lower end of the limiting cylinder 5 is open. The vibrating ball 6 is located inside the limiting cylinder 5 and its lower end contacts the drum screen body 2. The fixing plate 7 is fixed on the drum screen body 2. The limiting cylinder 5 has a through groove 8 for the fixing plate 7 to pass through.

[0029] Specifically, the surface of the fixing plate 7 that contacts the vibrating ball 6 is a slope, and the surface away from the vibrating ball 6 is parallel to one of the radial lines of the drum screen body 2. For example... Figure 9 As shown, the drum screen body 2 drives the fixed plate 7 to rotate counterclockwise.

[0030] In this embodiment, the vibrating ball 6 can move up and down inside the limiting cylinder 5. When the drum screen body 2 drives the fixing plate 7 to rotate, the fixing plate 7 passes through the through groove 8 and lifts the vibrating ball 6. When the fixing plate 7 leaves the through groove 8, the vibrating ball 6 falls down, thereby vibrating the drum screen body 2 to shake off the aluminum dust on the drum screen body 2.

[0031] Meanwhile, considering that when the cover 3 is fixed on the support frame 1, the vibrating ball 6 can easily slide directly out of the limiting cylinder 5, an opening is provided at the upper end of the cover 3 to communicate with the upper end of the limiting cylinder 5, so that the vibrating ball 6 can be put into the limiting cylinder 5 after the cover 3 is fixed.

[0032] In this embodiment, in order to avoid positional interference between the brush roller 4 and the vibration mechanism, two sets of brush rollers 4 are provided on the cover 3, and a vibration mechanism is provided between the two sets of brush rollers 4. In another possible embodiment, a set of brush rollers 4 can be directly provided on the cover 3, and a vibration mechanism can be provided on the side of the brush roller 4.

[0033] refer to Figure 2 The diameter of the screen holes on the drum screen body 2 increases sequentially from small to large. The drum screen body 2 is divided into 3 sections, and the diameter of the screen holes on each section is the same. A feed pipe 15 is provided on one side of the cover 3, and the feed pipe 15 is located on the side of the drum screen body 2 with smaller screen hole diameters. In this embodiment, the feed pipe 15 and the motor 19 are located on the same side of the drum screen body 2.

[0034] A hopper 16 is fixed on the support frame 1. The hopper 16 receives the material screened off the drum screen body 2 and is located on the lower side of the drum screen body 2. Multiple discharge ports 17 are provided at the lower end of the hopper 16. A partition 18 is fixed between adjacent discharge ports 17, and the upper end of the partition 18 contacts the drum screen body 2. The partition 18 reduces the probability of aluminum slag of different particle sizes screened by the drum screen body 2 mixing together.

[0035] When using this device, turn on motor 19 to drive the drum screen body 2 to rotate counterclockwise (see reference). Figure 9 At this point, aluminum slag can be fed into the drum screen body 2 through the feed pipe 15. The drum screen body 2 screens the aluminum slag, and the aluminum slag of different particle sizes is discharged from different discharge ports 17. During this process, the toothed ring 14 on the drum screen body 2 drives the gear 13 to rotate clockwise, which in turn drives the brush roller 4 fixed to the gear 13 to rotate clockwise to brush the drum screen body 2. At the same time, the drum screen body 2 drives the fixed plate 7 fixed on it to rotate. The fixed plate 7 passes through the through groove 8 on the limiting cylinder 5 and lifts the vibrating ball 6. When the fixed plate 7 leaves the through groove 8, the vibrating ball 6 falls down, which in turn vibrates the drum screen body 2 to shake off the aluminum dust on the drum screen body 2, reducing the probability of the drum screen body being blocked and improving the screening accuracy of the drum screen.

[0036] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A screen cleaning device for a rotary drum screen, comprising a rotary drum screen body (2) rotatably mounted on a support frame (1), characterized in that, The support frame (1) is fixed with a cover (3), and a brush roller (4) is rotatably mounted on the cover (3). The brush roller (4) is located between the cover (3) and the drum screen body (2). The bristles on the brush roller (4) contact the drum screen body (2), and the rotation direction of the brush roller (4) is opposite to that of the drum screen body (2). It also includes a vibration mechanism, which includes a limiting cylinder (5), a vibrating ball (6) and a fixing plate (7). The limiting cylinder (5) is fixed on the side of the cover (3) near the drum screen body (2). The lower end of the limiting cylinder (5) is open. The vibrating ball (6) is located inside the limiting cylinder (5) and its lower end contacts the drum screen body (2). The fixing plate (7) is fixed on the drum screen body (2). A through groove (8) is provided on the limiting cylinder (5) for the fixing plate (7) to pass through.

2. The screen cleaning device for a drum screen according to claim 1, characterized in that, The support frame (1) is equipped with a power mechanism, and a rotating shaft (9) is fixedly connected to the output end of the power mechanism. The rotating shaft (9) coincides with the axis of the drum screen body (2). A support rod (10) is fixed on the rotating shaft (9), and the end of the support rod (10) is fixedly connected to the inner wall of the drum screen body (2).

3. The screen cleaning device for a drum screen according to claim 1, characterized in that, A support plate (11) is fixed on the cover (3). The roller shaft (12) of the brush roller (4) is rotatably connected to the support plate (11). A gear (13) is fixed on the roller shaft (12). A toothed ring (14) is fixedly sleeved on the outside of the drum screen body (2). The toothed ring (14) meshes with the gear (13).

4. The screen cleaning device for a drum screen according to claim 1, characterized in that, The surface of the fixed plate (7) that contacts the vibrating ball (6) is a slope, and the surface away from the vibrating ball (6) is parallel to one of the radial lines of the drum screen body (2).

5. A screen cleaning device for a drum screen according to claim 1, characterized in that, The diameter of the screen holes on the drum screen body (2) increases from small to large. A feed pipe (15) is provided on one side of the cover (3), and the feed pipe (15) is located on the side of the drum screen body (2) with smaller screen hole diameter.

6. A screen cleaning device for a drum screen according to claim 1, characterized in that, The support frame (1) is fixed with a feeding hopper (16), which is located on the lower side of the drum screen body (2).

7. A screen cleaning device for a drum screen according to claim 6, characterized in that, The lower end of the hopper (16) is provided with multiple discharge ports (17), and a partition (18) is fixed between two adjacent discharge ports (17). The upper end of the partition (18) is in contact with the drum screen body (2).

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