A raw coal multi-stage screening device

Abstract

The utility model provides a raw coal multistage screening equipment relates to raw coal screening technical field, including the first support rod of fixed installation board, the first support rod upper end swing is provided with the processing box, the processing box inside is provided with first sieve plate, second sieve plate and adjustment assembly, adjustment assembly is arranged respectively below first sieve plate and second sieve plate, with first sieve plate and second sieve plate all are through adjustment assembly swing in processing box inside. This raw coal multistage screening equipment installs first sieve plate and second sieve plate in screening bin inside, can carry out multiple screening to raw coal, and the multiple sieve plate setting of first sieve plate and second sieve plate not only can gradually screen out impurity and the coal that does not meet the specification, but also can reduce the load and the plugging problem of single sieve plate, thereby reducing the plugging and cleaning time of screen cloth, and the multiple sieve plate setting can also disperse screening pressure, effectively reduce the wear rate of sieve plate.

Description

Technical Field

[0001] This utility model relates to a screening device, specifically a multi-stage screening device for raw coal, belonging to the field of raw coal screening technology. Background Technology

[0002] Raw coal screening refers to the process of classifying raw coal according to different particle sizes. This typically utilizes the screen surface of screening equipment, such as fixed screens or raw coal grading screens, to screen materials and separate mixtures into different particle size grades based on particle size. This screening process can classify raw coal using different screen aperture sizes to meet the needs of different customers. Raw coal grading screens are widely used in various industries such as coal washing, coal processing, power generation, and metallurgy.

[0003] Currently, existing raw coal screening equipment still has some shortcomings. It is often inconvenient to separate raw coal of various sizes and specifications, and it cannot control the movement speed of raw coal on the screen plate well. If the movement is too slow, it will accumulate on the screen plate, affecting the screening effect and potentially causing screen blockage. If the movement is too fast, the raw coal will stay on the screen plate for a short time, affecting the screening efficiency.

[0004] Therefore, a multi-stage screening device for raw coal is proposed here. Utility Model Content

[0005] This utility model proposes a multi-stage screening device for raw coal to solve the problems in the prior art that it is inconvenient to separate raw coal of various sizes and that the movement speed of raw coal on the screen plate cannot be well controlled.

[0006] This utility model is achieved through the following technical solution: a multi-stage screening equipment for raw coal, including a first support rod fixed on a mounting plate, a processing box movably disposed at the upper end of the first support rod, a first screen plate, a second screen plate and an adjustment component disposed inside the processing box, the adjustment component being disposed below the first screen plate and the second screen plate respectively, and both the first screen plate and the second screen plate being movable inside the processing box through the adjustment component.

[0007] The processing box has a screening chamber inside. One end of the first screen plate and the second screen plate are rotatably connected to the inner wall of the screening chamber. Both the first screen plate and the second screen plate are inclined, and the diameter of the screen hole of the first screen plate is larger than that of the second screen plate. Both sides of the processing box are provided with discharge ports corresponding to the first screen plate and the second screen plate.

[0008] Furthermore, the adjustment assembly includes a support plate fixed to the inner wall of the screening chamber, a threaded rod rotatably connected to the side of the support plate, the other end of the threaded rod penetrating the processing box and fixedly connected to a rotating disk, the rotating disk being disposed on one side of the processing box, a threaded cap threadedly connected to the surface of the threaded rod, a first connecting rod hinged to the surface of the threaded cap, and the upper end of the first connecting rod hinged to the lower surface of the first screen plate.

[0009] Furthermore, the adjustment assembly also includes a second support rod, one end of which is fixed to the side of another support plate, and the other end of which is fixed to the inner wall of the screening chamber. A movable block is sleeved on the surface of the second support rod, and a second connecting rod is hinged to the upper surface of the movable block. The upper end of the second connecting rod is hinged to the lower surface of the first screen plate. The second support rod is L-shaped.

[0010] Furthermore, a damper is provided on the side of the first support rod, and the upper end of the damper is fixed to the lower surface of the processing box. There are multiple first support rods, which are evenly arranged in a rectangular shape below the processing box. The side of the processing box is fixed with a mounting box for assembling a vibration motor by bolts.

[0011] Furthermore, the upper surface of the processing box is provided with a feed inlet, which is connected to the screening chamber. A feed pipe is also fixed on the upper surface of the processing box. The feed pipe is aligned with the feed inlet, and the feed inlet is located at the higher end of the first screen plate.

[0012] Furthermore, a feeding plate is fixed to the inner wall of the discharge port. One end of the feeding plate is located below the first screen plate, and the other end of the feeding plate is located on one side of the processing box and connected to the external storage equipment. A baffle is also fixed to the inner wall of the screening chamber. The baffle is located above the higher end of the second screen plate.

[0013] Furthermore, the screening chamber is also equipped with a collection trough, a slider is fixed on the lower surface of the collection trough, and a groove corresponding to the slider is opened on the bottom wall of the screening chamber. The slider moves inside the groove, and the collection trough moves inside the screening chamber through the slider and the groove. An observation window is also opened on the front of the processing box.

[0014] This utility model provides a multi-stage screening device for raw coal, which has the following beneficial effects:

[0015] This multi-stage raw coal screening equipment can screen raw coal multiple times by installing a first screen plate and a second screen plate inside the screening chamber. The multi-screen plate setup of the first and second screen plates can not only gradually remove impurities and non-compliant coal, but also reduce the load and clogging problems of individual screen plates, thereby reducing screen clogging and cleaning time. At the same time, the multi-screen plate setup can also distribute the screening pressure and effectively reduce the wear rate of the screen plates.

[0016] This multi-stage raw coal screening equipment adjusts the angles of the first and second screen plates using an adjustment component, allowing the raw coal to move at a uniform speed on the screen plates. This reduces the accumulation of coal particles on the screen plates, lowers the risk of clogging, prevents premature damage or clogging of the screens, improves the continuous operation capability and maintenance cycle of the equipment, and allows the screen plate angles to be adjusted according to the coal properties and processing requirements, enabling the screening equipment to adapt to different production environments and coal characteristics, thus improving the adaptability and operational flexibility of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a structural schematic diagram showing the formal cross-section of this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment component in this utility model;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. First support rod; 101. Damper;

[0023] 2. Processing box; 201. Screening bin; 202. Feed inlet; 203. Collection trough; 204. Sliding block; 205. Discharge outlet; 206. Baffle;

[0024] 3. Feed pipe; 4. First screen plate; 5. Second screen plate;

[0025] 6. Adjustment components; 601. Support plate; 602. Threaded rod; 603. Rotating disk; 604. Threaded cap; 605. First connecting rod; 606. Second support rod; 607. Movable block; 608. Second connecting rod;

[0026] 7. Mounting box; 8. Cutting plate. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0028] Please see Figures 1-4The present invention proposes the following implementation scheme: A multi-stage screening device for raw coal includes a first support rod 1 fixed on a mounting plate. A processing box 2 is movably disposed at the upper end of the first support rod 1. A first screen plate 4, a second screen plate 5, and an adjustment assembly 6 are disposed inside the processing box 2. The adjustment assembly 6 is disposed below the first screen plate 4 and the second screen plate 5, and both the first screen plate 4 and the second screen plate 5 are movable inside the processing box 2 through the adjustment assembly 6. A screening chamber 201 is opened inside the processing box 2. One end of the first screen plate 4 and the second screen plate 5 are rotatably connected to the inner wall of the screening chamber 201. Both the first screen plate 4 and the second screen plate 5 are inclined. The first screen plate 4 is inclined and its screen hole diameter is larger than that of the second screen plate 5. Both sides of the processing box 2 are provided with discharge ports 205 corresponding to the first screen plate 4 and the second screen plate 5. This multi-stage raw coal screening equipment can screen raw coal multiple times by installing the first screen plate 4 and the second screen plate 5 inside the screening chamber 201. The multi-screen plate arrangement of the first screen plate 4 and the second screen plate 5 can not only gradually remove impurities and coal that does not meet the specifications, but also reduce the load and clogging problem of a single screen plate, thereby reducing the clogging and cleaning time of the screen. At the same time, the multi-screen plate arrangement can also distribute the screening pressure and effectively reduce the wear rate of the screen plate.

[0029] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3 The adjustment assembly 6 includes a support plate 601 fixed to the inner wall of the screening chamber 201. A threaded rod 602 is rotatably connected to the side of the support plate 601. The other end of the threaded rod 602 passes through the processing box 2 and is fixedly connected to a rotating disk 603, which is located on one side of the processing box 2. A threaded cap 604 is threadedly connected to the surface of the threaded rod 602. A first connecting rod 605 is hinged to the surface of the threaded cap 604. The upper end of the first connecting rod 605 is hinged to the lower surface of the first screen plate 4. The adjustment assembly 6 also includes a second support rod 606. One end of the second support rod 606 is fixed to the side of another support plate 601, and the other end is fixed to the inner wall of the screening chamber 201. A movable block 607 is fitted onto the surface of the 06 screen plate. A second connecting rod 608 is hinged to the upper surface of the movable block 607. The upper end of the second connecting rod 608 is hinged to the lower surface of the first screen plate 4. The second support rod 606 is L-shaped. This multi-stage raw coal screening equipment adjusts the angle of the first screen plate 4 and the second screen plate 5 through the adjustment component 6, so that the raw coal can move at a uniform speed on the screen plate, thereby reducing the accumulation of coal particles on the screen plate, reducing the risk of clogging, avoiding premature damage or clogging of the screen, improving the continuous operation capability and maintenance cycle of the equipment, and adjusting the screen plate angle according to the coal properties and processing requirements, so that the screening equipment can adapt to different production environments and coal characteristics, improving the adaptability and operational flexibility of the equipment.

[0030] Please refer to this carefully. Figure 1 , Figure 2 and Figure 4A damper 101 is provided on the side of the first support rod 1. The upper end of the damper 101 is fixed to the lower surface of the processing box 2. There are multiple first support rods 1, which are evenly arranged in a rectangular shape below the processing box 2. The side of the processing box 2 is fixed with a mounting box 7 for assembling a vibration motor by bolts. The upper surface of the processing box 2 has a feed inlet 202, which is connected to the screening chamber 201. A feed pipe 3 is also fixed on the upper surface of the processing box 2. The position of the feed pipe 3 is aligned with the feed inlet 202, and the feed inlet 202 is located at the higher end of the first screen plate 4. A discharge plate 8 is fixed to the inner wall of the discharge port 205. One end of the material plate 8 is located below the first screen plate 4, and the other end of the material plate 8 is located on one side of the processing box 2 and connected to the external storage equipment. A baffle 206 is also fixed on the inner wall of the screening chamber 201, and the baffle 206 is located above the higher end of the second screen plate 5. A collection trough 203 is also provided inside the screening chamber 201. A slider 204 is fixed on the lower surface of the collection trough 203. A groove corresponding to the slider 204 is opened on the bottom wall of the screening chamber 201. The slider 204 moves inside the groove. The collection trough 203 moves inside the screening chamber 201 through the slider 204 and the groove. An observation window is also opened on the front of the processing box 2.

[0031] When using this utility model: First, place the device in a designated position and connect it to an external control device and power supply. The control device can be a conventional known device such as a computer. The operator first installs the vibrating motor in the designated position and controls the operation of the vibrating motor through the control device. Then, the raw coal is poured into the screening chamber 201 through the feed pipe 3. The raw coal then moves on the first screen plate 4. The raw coal particles smaller than the screen holes on the surface of the first screen plate 4 fall downwards into the second screen plate 5. The remaining raw coal is discharged from the screening chamber 201 through the discharge port 205 on the side. Similarly, the falling raw coal is screened a second time through the second screen plate 5. Finally, the falling raw coal is transported to the next process by the conveyor belt passing through the screening chamber 201.

[0032] When it is necessary to adjust the angle of the first screen plate 4 and the second screen plate 5 to adjust the speed at which the raw coal moves on the surface of the first screen plate 4 and the second screen plate 5, the operator only needs to rotate the rotating disk 603 to drive the threaded rod 602 to move. The threaded rod 602 drives the threaded cap 604 to move, thereby driving the first connecting rod 605 hinged to the surface of the threaded cap 604 to move. This allows the angle of the first screen plate 4 or the second screen plate 5 to be adjusted, so that the raw coal on the surface of the first screen plate 4 or the second screen plate 5 can move faster or slower.

[0033] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for raw coal, comprising a first support rod (1) fixed on a mounting plate, wherein a processing box (2) is movably disposed at the upper end of the first support rod (1), characterized in that: The processing box (2) is provided with a first sieve plate (4), a second sieve plate (5) and an adjustment component (6). The adjustment component (6) is respectively located below the first sieve plate (4) and the second sieve plate (5), and the first sieve plate (4) and the second sieve plate (5) are both movable inside the processing box (2) through the adjustment component (6). The processing box (2) has a screening chamber (201) inside. The first screen plate (4) and the second screen plate (5) are rotatably connected to the inner wall of the screening chamber (201) at one end. The first screen plate (4) and the second screen plate (5) are both inclined. The diameter of the screen hole of the first screen plate (4) is larger than that of the second screen plate (5). The processing box (2) has discharge ports (205) on both sides corresponding to the first screen plate (4) and the second screen plate (5).

2. The multi-stage screening equipment for raw coal according to claim 1, characterized in that: The adjustment assembly (6) includes a support plate (601) fixed to the inner wall of the screening chamber (201). A threaded rod (602) is rotatably connected to the side of the support plate (601). The other end of the threaded rod (602) passes through the processing box (2) and is fixedly connected to a rotating disk (603). The rotating disk (603) is located on one side of the processing box (2). A threaded cap (604) is threadedly connected to the surface of the threaded rod (602). A first connecting rod (605) is hinged to the surface of the threaded cap (604). The upper end of the first connecting rod (605) is hinged to the lower surface of the first screen plate (4).

3. The multi-stage screening equipment for raw coal according to claim 2, characterized in that: The adjustment assembly (6) further includes a second support rod (606), one end of which is fixed to the side of another support plate (601), and the other end of which is fixed to the inner wall of the screening chamber (201). A movable block (607) is sleeved on the surface of the second support rod (606), and a second connecting rod (608) is hinged to the upper surface of the movable block (607). The upper end of the second connecting rod (608) is hinged to the lower surface of the first sieve plate (4). The second support rod (606) is "L" shaped.

4. The multi-stage screening equipment for raw coal according to claim 1, characterized in that: The first support rod (1) is provided with a damper (101) on its side. The upper end of the damper (101) is fixed to the lower surface of the processing box (2). There are multiple first support rods (1), which are evenly arranged in a rectangular shape below the processing box (2). The processing box (2) is fixed with a mounting box (7) for assembling a vibration motor by bolts on its side.

5. The multi-stage screening equipment for raw coal according to claim 1, characterized in that: The processing box (2) has an inlet (202) on its upper surface. The inlet (202) is connected to the screening chamber (201). The processing box (2) also has a feed pipe (3) fixed on its upper surface. The feed pipe (3) is aligned with the inlet (202), and the inlet (202) is located at the higher end of the first sieve plate (4).

6. The multi-stage screening equipment for raw coal according to claim 1, characterized in that: The inner wall of the discharge port (205) is fixed with a feeding plate (8). One end of the feeding plate (8) is located below the first screen plate (4), and the other end of the feeding plate (8) is located on one side of the processing box (2) and connected to the external storage equipment. The inner wall of the screening chamber (201) is also fixed with a baffle (206). The baffle (206) is located above the higher end of the second screen plate (5).

7. The multi-stage screening equipment for raw coal according to claim 1, characterized in that: The screening chamber (201) is also provided with a collection trough (203). A slider (204) is fixed on the lower surface of the collection trough (203). The bottom wall of the screening chamber (201) is provided with a groove corresponding to the slider (204). The slider (204) moves inside the groove. The collection trough (203) moves inside the screening chamber (201) through the slider (204) and the groove. The front of the processing box (2) is also provided with an observation window.

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