Anti-blocking screen of coal washing dehydrator

Abstract

The utility model relates to an anti-blocking screen of a coal washing dehydrator, which is used for coal dressing. Comprising a support and a U-shaped plate fixedly installed at the top of the support, a time controller and a vibration mechanism are fixedly installed on one side of the U-shaped plate, the vibration mechanism comprises a shell fixedly installed on the two sides of the inner wall of the U-shaped plate, a sliding plate slidably connected to the interior of the shell and a screen box, and the screen box is fixedly installed on one side of the sliding plate; a screen and four L-shaped plates are fixedly installed in the screen box, the four L-shaped plates are all fixedly installed at the bottom of a sliding plate, when the set time is reached through a time controller, an electric telescopic rod is controlled to be started to drive a supporting frame to stretch out and draw back upwards, a tamping rod is inserted into meshes of the screen, and therefore the purpose of conducting timed unblocking on the screen is achieved; the screen is effectively prevented from being blocked in the coal washing and dewatering process, the working efficiency of coal washing and dewatering is improved, and the service life of the screen is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of coal preparation, in particular to an anti-clogging screen for a coal washing and dewatering machine. Background Art

[0002] Coal washing is a process of separating clean coal that meets the quality requirements of users from raw coal. By using the different physical and physico-chemical properties of coal and other minerals, impurities in the raw coal are removed mechanically in a coal preparation plant, and it is divided into products of different qualities and specifications to meet the requirements of different users; a vibrating coal washing device is used in the coal washing work to remove impurities in the raw coal;

[0003] It is known that the Chinese publicly authorized invention: (Publication No. 202222396873.1) discloses an anti-clogging screen for a vibrating coal washing device for coal preparation, including an installation component and an anti-clogging component. The installation component includes an installation ring, and the anti-clogging component includes a cross plate, a rotating column, a fixed shaft, a rotating cylinder, a brush, a motor, a driving bevel gear and a driven bevel gear; one side of the lower surface of the cross plate is rotatably connected with a rotating column through a bearing, and one side bottom of the rotating column is welded with a fixed shaft. In the utility model, when one end of the output shaft of the motor rotates, it can drive the driving bevel gear to rotate, and then drive the driven bevel gear and the rotating column to rotate. When the rotating column rotates, it can drive the fixed shaft and the rotating cylinder to rotate, so that the rotating cylinder rolls on the upper surface of the screen. When the rotating cylinder rolls, the brush on the surface of the rotating cylinder will insert into the screen holes, and the screen holes blocked by impurities can be dredged, preventing the screen from being blocked, improving the screening efficiency of the screen, and thus improving the working efficiency of the overall coal washing work.

[0004] However, in the implementation of the related technology, it is found that the above anti-clogging screen for a vibrating coal washing device for coal preparation has the following problems: it is difficult to clean and unclog the screen regularly, which easily leads to blockage of the screen during the coal washing and dewatering process, reducing the working efficiency of coal washing and dewatering and the service life of the screen. Therefore, an anti-clogging screen for a coal washing and dewatering machine is proposed. Summary of the Utility Model

[0005] The utility model provides an anti-clogging screen for a coal washing and dewatering machine, which solves the problem in the related technology that it is difficult to clean and unclog the screen regularly, which easily leads to blockage of the screen during the coal washing and dewatering process, reducing the working efficiency of coal washing and dewatering and the service life of the screen.

[0006] The technical solution of the utility model is as follows:

[0007] An anti-clogging screen for a coal washing and dewatering machine includes a bracket, a U-shaped plate fixedly installed on the top of the bracket, a vibration mechanism and a screen box, and a time controller is fixedly installed on the outer side of the U-shaped plate;

[0008] The vibration mechanism includes a housing fixedly installed on both sides of the inner wall of the U-shaped plate, and a sliding plate slidably connected inside the housing;

[0009] The sieve box is fixedly installed on the inner side of the sliding plate, and a sieve mesh is fixedly installed inside the sieve box;

[0010] Four L-shaped plates, all four L-shaped plates are fixedly installed at the bottom of the sliding plate, electric telescopic rods are fixedly installed on the inner bottom walls of the four L-shaped plates, a support frame is fixedly installed at the top of the electric telescopic rods, and a plurality of ramming rods corresponding to the mesh holes of the sieve mesh are fixedly installed on the top of the support frame. The time controller is electrically connected to the electric telescopic rod.

[0011] Preferably, a feed funnel is fixedly installed on the top of the sieve box.

[0012] Preferably, a discharge funnel is fixedly installed at the bottom of the U-shaped plate.

[0013] Preferably, the vibration mechanism further includes two driven rods fixedly installed on the upper and lower sides inside the housing. The two driven rods are arranged oppositely, and the two driven rods are jointly movably connected to the sliding plate.

[0014] Preferably, a plurality of springs are fixedly installed on the upper and lower sides of the sliding plate in sequence from left to right. One ends of the plurality of springs are away from the sliding plate, and the other ends are fixedly connected to the upper and lower sides inside the housing.

[0015] Preferably, a vibration motor is fixedly installed on the top of the sliding plate, and the vibration motor is located on one side of the plurality of springs.

[0016] The working principle and beneficial effects of the present utility model are as follows: When the set time is reached through the time controller, the electric telescopic rod is controlled to start and drive the support frame to expand and contract upward, so that the ramming rod is inserted into the mesh hole of the sieve mesh, thereby realizing the purpose of regularly clearing the blockage of the sieve mesh, effectively preventing the sieve mesh from being blocked during the coal washing and dewatering process, improving the working efficiency of coal washing and dewatering, and the service life of the sieve mesh; performing vibration dewatering, effectively preventing coal from blocking the sieve mesh, and improving the working efficiency of coal dewatering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic perspective view of the overall three-dimensional structure proposed by the present utility model;

[0018] Figure 2 is a schematic perspective view of the sectional three-dimensional structure of the first sieve box proposed by the present utility model;

[0019] Figure 3 is a schematic perspective view of the sectional three-dimensional structure of the second sieve box proposed by the present utility model;

[0020] Figure 4 This is a schematic perspective sectional view of the U-shaped plate proposed by the present utility model;

[0021] In the figure: 1, support; 2, U-shaped plate; 3, time controller; 4, vibration mechanism; 5, sieve box; 6, sieve mesh; 7, L-shaped plate; 8, electric telescopic rod; 9, support frame; 10, ramming rod; 11, discharge funnel; 12, feed funnel; 41, housing; 42, sliding plate; 43, driven rod; 44, spring; 45, vibration motor. Specific embodiments

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0023] Refer to Figure 1 , Figure 2 , Figure 3 And Figure 4 , the present utility model provides a technical solution for preventing blockage of the sieve mesh of a coal washing and dewatering machine: including: a support 1, a U-shaped plate 2 fixedly installed on the top of the support 1, a time controller 3 fixedly installed on one side of the U-shaped plate 2, a vibration mechanism 4, the vibration mechanism 4 includes a housing 41 fixedly installed on both sides of the inner wall of the U-shaped plate 2, a sliding plate 42 slidably connected inside the housing 41, a sieve box 5, the sieve box 5 is fixedly installed on one side of the sliding plate 42, a sieve mesh 6 and four L-shaped plates 7 are fixedly installed inside the sieve box 5, the four L-shaped plates 7 are all fixedly installed on the bottom of the sliding plate 42, electric telescopic rods 8 are fixedly installed on the inner bottom walls of the four L-shaped plates 7, a support frame 9 is fixedly installed at the top of the electric telescopic rods 8, and a plurality of ramming rods 10 corresponding to the mesh holes of the sieve mesh 6 are fixedly installed on the top of the support frame 9, and the time controller 3 is electrically connected to the electric telescopic rods 8;

[0024] The time controller 3 is used to control the up and down lifting time of the electric telescopic rods 8. When the time controller 3 reaches the set time, it controls the electric telescopic rods 8 to start. The electric telescopic rods 8 drive the support frame 9 to extend upward and downward, so that the ramming rods 10 are inserted into the mesh holes of the sieve mesh 6, thereby achieving the purpose of regularly clearing the blockage of the sieve mesh 6, effectively preventing the sieve mesh 6 from being blocked during the coal washing and dewatering process, improving the working efficiency of coal washing and dewatering, and the service life of the sieve mesh 6.

[0025] Specifically, a feed funnel 12 is fixedly installed on the top of the sieve box 5;

[0026] Through the feed funnel 12, it is used to concentrate and leak coal and water into the inside of the sieve box 5.

[0027] Specifically, a discharge funnel 11 is fixedly installed at the bottom of the U-shaped plate 2;

[0028] Through the discharge funnel 11, the coal washing water separated by the screen 6 is used for centralized downward leakage and discharge.

[0029] Specifically, the vibration mechanism 4 further includes two driven rods 43 fixedly installed on the upper and lower sides inside the housing 41. The two driven rods 43 are arranged oppositely, and the two driven rods 43 are movably connected to the slide plate 42 together. A plurality of springs 44 are fixedly installed on the upper and lower sides of the slide plate 42 in sequence from left to right. One ends of the plurality of springs 44 away from the slide plate 42 are fixedly connected to the upper and lower sides inside the housing 41. A vibration motor 45 is fixedly installed on the top of the slide plate 42, and the vibration motor 45 is located on one side of the plurality of springs 44;

[0030] By starting the vibration motor 45, the vibration motor 45 drives the slide plate 42 to slide up and down on the driven rod 43 through the plurality of springs 44, so that the screen box 5 vibrates up and down, thereby effectively vibrating and dehydrating the coal on the screen 6, effectively preventing the coal from blocking the screen 6, and improving the working efficiency of coal dehydration.

[0031] The working principle and usage process of the present utility model: Through the feeding funnel 12, the coal and water are used for centralized downward leakage into the interior of the screen box 5. After entering, the vibration motor 45 is started. The vibration motor 45 drives the slide plate 42 to slide up and down on the driven rod 43 through the plurality of springs 44, so that the screen box 5 vibrates up and down, thereby effectively vibrating and dehydrating the coal on the screen 6, effectively preventing the coal from blocking the screen 6, and improving the working efficiency of coal dehydration. The time controller 3 is used to control the up and down lifting time of the electric telescopic rod 8. When the time controller 3 reaches the set time, the electric telescopic rod 8 is controlled to start. The electric telescopic rod 8 drives the support frame 9 to extend upward, so that the ram rod 10 is inserted into the mesh holes of the screen 6, thereby achieving the purpose of timing clogging removal of the screen 6, effectively preventing the screen 6 from being blocked during the coal washing and dehydration process, improving the working efficiency of coal washing and dehydration, and the service life of the screen 6.

[0032] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An anti-blocking screen for a coal washing and dehydrating machine, characterized in that: It comprises a bracket (1), a U-shaped plate (2) fixedly mounted on the top of the bracket (1), a vibration mechanism (4), a screen box (5) and an L-shaped plate (7), and a time controller (3) is fixedly mounted on the outer side of the U-shaped plate (2); The vibration mechanism (4) comprises a shell (41) fixedly mounted on both sides of the inner wall of the U-shaped plate (2), and a slide plate (42) slidably connected to the inside of the shell (41); The screen box (5) is fixedly mounted on the inner side of the slide plate (42), and a screen (6) is fixedly mounted inside the screen box (5); The four L-shaped plates (7) are fixedly mounted on the bottom of the slide plate (42); the inner bottom walls of the four L-shaped plates (7) are fixedly mounted with electric telescopic rods (8); the tops of the electric telescopic rods (8) are fixedly mounted with support frames (9); the tops of the support frames (9) are fixedly mounted with a plurality of tamping rods (10) corresponding to the meshes of the screen (6); and the time controller (3) is electrically connected to the electric telescopic rods (8).

2. The anti-blocking screen of the coal washing and dehydrating machine according to claim 1, characterized in that: The vibration mechanism (4) further comprises two driven rods (43) fixedly mounted on the upper and lower sides of the shell (41), the two driven rods (43) being arranged opposite to each other and being movably connected to the slide plate (42); a plurality of springs (44) are fixedly mounted on the upper and lower sides of the slide plate (42) in sequence from left to right, one end of the plurality of springs (44) being away from the slide plate (42), and the other ends being fixedly connected to the upper and lower sides of the shell (41); a vibration motor (45) is fixedly mounted on the top of the slide plate (42), and the vibration motor (45) is located on one side of the plurality of springs (44).

3. The anti-blocking screen of the coal washing and dehydrating machine according to claim 1 or 2, characterized in that: A feeding funnel (12) is fixedly mounted on the top of the screen box (5).

4. The anti-blocking screen of the coal washing and dehydrating machine according to claim 3 is characterized by: A discharge funnel (11) is fixedly mounted on the bottom of the U-shaped plate (2).

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