Self-dumping coarse slime separator

Abstract

The utility model relates to the technical field of coarse slime separator, disclose a self -discharging type coarse slime separator, including filter jar, the side top fixed mode connection of filter jar has the feed inlet, the inside fixed mode connection of filter jar has the filter plate, the other side fixed mode connection of filter jar has the waste material mouth, the inside movable type connection of waste material mouth has the baffle, the side bottom fixed mode connection of filter jar has the discharge gate, the top fixed mode connection of jar top has the water inlet, one end fixed mode connection of jar top has electric push rod, the bottom fixed mode connection of electric push rod has the connecting plate, the bottom fixed mode connection of connecting plate and the top fixed mode connection of baffle, through spiral conveying device even -speed delivery to the coarse coal feed inlet, and the coarse coal reaches the filter plate on the feed inlet and completes the screening, and the clean coal that meets the granularity requirement passes through the sieve hole of filter plate, and falls into the bottom of filter jar, and the oversized big lump residue slides naturally along the inclined surface of filter plate, and is discharged from the waste material mouth subsequently.

Description

Technical Field

[0001] This utility model relates to the technical field of coarse coal slime separators, specifically a self-unloading coarse coal slime separator. Background Technology

[0002] In the coal washing and processing industry, the separation of coarse coal slime (typically with a particle size between 0.25 and 3 mm) is a crucial step in improving coal resource utilization and ensuring the quality of clean coal. If coarse coal slime is not effectively separated, its high-ash impurities will mix into the clean coal, leading to a decline in clean coal quality and affecting coal combustion efficiency. Conversely, if the high-quality, low-ash coal in the coarse coal slime is discarded with the gangue, it will result in resource waste. Taking thermal coal washing as an example, efficient coarse coal slime separation can increase the clean coal yield by 3% to 5%. Based on a mine with an annual output of 10 million tons of raw coal, this could mean recovering an additional 300,000 to 500,000 tons of high-quality clean coal annually, directly creating tens of millions of yuan in economic value. Early coarse coal slime separation relied heavily on manual sorting or simple screening equipment, which could not meet the production requirements of high-quality clean coal. Simple screening equipment could only separate based on particle size differences, and large pieces of residue accumulated after screening required additional equipment for transportation, as they could not slide out naturally, increasing the sorting process and energy consumption. Secondly, the adhesion of fine coal powder caused screen holes to become clogged, requiring frequent shutdowns for cleaning, which reduced the filtration progress and further restricted the sorting efficiency and resource recovery rate, making it difficult to meet the needs of large-scale, high-efficiency coarse coal slime processing.

[0003] To address the above problems, we propose a self-unloading coarse coal slime separator. Utility Model Content

[0004] To address the existing technical problems, this utility model provides a self-unloading coarse coal slime separator.

[0005] This utility model is achieved using the following technical solution: a self-unloading coarse coal slime separator, comprising a filter tank, a tank top fixedly connected to the top of the filter tank, a feed inlet fixedly connected to the top of one side of the filter tank, a filter plate fixedly connected to the inside of the filter tank, a waste outlet fixedly connected to the other side of the filter tank, a baffle movably connected to the inside of the waste outlet, a discharge outlet fixedly connected to the bottom of one side of the filter tank, a water inlet fixedly connected to the top of the tank top, the water inlet communicating with the inside of the filter tank, an electric push rod fixedly connected to one end of the tank top, a connecting plate fixedly connected to the bottom of the electric push rod, and the bottom of the connecting plate fixedly connected to the top of the baffle.

[0006] Preferably, a servo motor is provided at the top of the tank, a rotating shaft is fixedly connected to the bottom of the servo motor, a blade is fixedly connected to the bottom of the rotating shaft, and the blade is rotatably connected to the bottom of the filter tank.

[0007] Preferably, the top of the rotating shaft is rotatably connected to the inside of the tank top, and the middle part of the rotating shaft is rotatably connected to the inside of the filter plate.

[0008] Preferably, the filter plate is tilted, the feed inlet is positioned higher than the waste outlet, the feed inlet is located at the top end of the filter plate, and the waste outlet is located at the bottom end of the filter plate.

[0009] Preferably, the top of the connecting plate is fixedly connected to two guide rods, and the top of the guide rods is movably connected to the inside of the tank top.

[0010] Preferably, a limiting ring is fixedly connected to the top of the guide rod, and the limiting ring is located at the top of the tank top.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In use, this utility model uses a spiral conveyor to uniformly transport coarse coal to the feed inlet. The coarse coal falls into the filter tank through the feed inlet and is screened on the filter plate. Fine coal that meets the particle size requirements passes through the screen holes of the filter plate and falls to the bottom of the filter tank, while large pieces of residue that exceed the particle size standard slide down naturally along the inclined surface of the filter plate and are discharged from the waste outlet later.

[0012] When this utility model is in use, during the coarse coal filtration process, clean water is injected into the filter tank through the water inlet. When the clean water flows over the surface of the filter plate, it can wash the coarse coal, dissolve or disperse the fine coal powder attached to the surface of the coarse coal, and improve the efficiency of clean coal passing through the screen holes. On the other hand, it can prevent the coarse coal from drying and accumulating on the top of the filter plate, and prevent the screen holes from being blocked and affecting the filtration progress. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the filter tank of this utility model; Figure 3 This is a schematic diagram of the connection structure between the waste inlet and the baffle of this utility model.

[0014] In the diagram: 1. Filter tank; 2. Tank top; 3. Feed inlet; 4. Filter plate; 5. Waste outlet; 6. Baffle; 7. Water inlet; 8. Discharge outlet; 9. Servo motor; 10. Rotating shaft; 11. Paddle; 12. Electric push rod; 13. Connecting plate; 14. Guide rod; 15. Limit ring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] Example 1: Please refer to Figure 1 - Figure 3 This embodiment of a self-unloading coarse coal slime separator includes a filter tank 1, a tank top 2 fixedly connected to the top of the filter tank 1, a feed inlet 3 fixedly connected to the top of one side of the filter tank 1, a filter plate 4 fixedly connected to the inside of the filter tank 1, a waste outlet 5 fixedly connected to the other side of the filter tank 1, a baffle 6 movably connected to the inside of the waste outlet 5, a discharge outlet 8 fixedly connected to the bottom of one side of the filter tank 1, a water inlet 7 fixedly connected to the top of the tank top 2, the water inlet 7 communicating with the inside of the filter tank 1, an electric push rod 12 fixedly connected to one end of the tank top 2, a connecting plate 13 fixedly connected to the bottom of the electric push rod 12, and the bottom of the connecting plate 13 fixedly connected to the top of the baffle 6. When sorting and filtering coarse coal is required, the coarse coal is first conveyed at a constant speed to the feed inlet 3 by a screw conveyor. The coarse coal falls into the filter tank 1 through the feed inlet 3 and reaches the filter plate 4. Since the filter plate 4 is set at an inclination (the inclination angle is 15°-25°, which facilitates the sliding of residue), the coarse coal is screened on the filter plate 4. The fine coal that meets the particle size requirements passes through the screen holes of the filter plate 4 and falls into the bottom of the filter tank 1; while the large pieces of residue that exceed the particle size standard slide down naturally along the inclined surface of the filter plate 4 and are discharged from the waste outlet 5 later. During the coarse coal filtration process, clean water is simultaneously injected into the filter tank 1 through the water inlet 7. When the clean water flows through the surface of the filter plate 4, it can wash the coarse coal, dissolve or disperse the fine coal powder attached to the surface of the coarse coal, and improve the efficiency of clean coal passing through the screen holes. On the other hand, it can prevent the coarse coal from drying and accumulating on the top of the filter plate 4, and prevent the screen holes from being blocked and affecting the filtration progress. The rinsed clean water and the clean coal passing through the sieve holes of filter plate 4 naturally mix at the bottom of filter tank 1 to form a coal-water mixture (the solid-liquid ratio is usually controlled at 1:3-1:5 to ensure uniform suspension of coal particles). This mixture is then discharged through outlet 8 and enters the subsequent gangue separation stage based on "density difference"—there is a significant density difference between the gangue mixed in the coarse coal (mainly composed of silicon dioxide and alumina, with a density of about 2.5-3.0 g / cm³) and the clean coal (with a density of about 1.3-1.8 g / cm³). Existing technology can utilize this characteristic to achieve preliminary separation of the two, and the specific principle is as follows: If a gravity grading screen is used for separation: the coal-water mixture is conveyed to the grading screen (the mesh size is adapted to the requirements of clean coal). Through the low-frequency vibration of the screen (vibration frequency 20-30Hz), the denser gangue, due to its stronger inertial force, is difficult to pass through the screen with the coal-water mixture and will slide down the screen surface to the gangue collection trough; while the less dense clean coal particles pass through the screen with the water flow and enter the subsequent dewatering stage, completing the initial separation.

[0017] In addition, a liftable baffle 6 is installed at the waste inlet 5. Under normal filtration conditions, the baffle 6 is in a closed state, completely blocking the channel of the waste inlet 5, preventing the clean water injected by the inlet 7 from being directly lost through the waste inlet 5, thus reducing water waste. When a large amount of coarse coal residue is found to have accumulated at the waste inlet 5 through the observation window, the electric push rod 12 is activated. The piston rod of the electric push rod 12 extends upward, driving the connecting plate 13 fixedly connected to it to move upward synchronously. The connecting plate 13 then pulls the baffle 6 upward, opening the internal channel of the waste inlet 5. The accumulated coarse coal residue is quickly discharged under the action of gravity and water flow. After the residue is discharged, the electric push rod 12 is reset, driving the baffle 6 to close the waste inlet 5 again, restoring the normal filtration state. Furthermore, a servo motor 9 is provided at the top of the tank top 2, a rotating shaft 10 is fixedly connected to the bottom of the servo motor 9, a paddle 11 is fixedly connected to the bottom of the rotating shaft 10, the paddle 11 is rotatably connected to the bottom of the filter tank 1, the top of the rotating shaft 10 is rotatably connected to the inside of the tank top 2, and the middle of the rotating shaft 10 is rotatably connected to the inside of the filter plate 4. When the water reaches the bottom of the filter tank 1 and mixes with the clean coal, the servo motor 9 is started. The servo motor 9 will drive the rotating shaft 10 to rotate, and the rotating shaft 10 will drive multiple blades 11 to rotate. The rotation of multiple blades 11 facilitates the mixing of clean coal and water. At the same time, the rotation of the blades 11 can discharge the clean coal water through the discharge port 8. Furthermore, the filter plate 4 is tilted, with the feed inlet 3 positioned higher than the waste outlet 5. The feed inlet 3 is located at the top end of the filter plate 4, and the waste outlet 5 is located at the bottom end of the filter plate 4. Furthermore, the top of the connecting plate 13 is fixedly connected to two guide rods 14, and the top of the guide rods 14 is movably connected to the inside of the tank top 2. When the connecting plate 13 drives the baffle 6 to move, the connecting plate 13 will drive the guide rods 14 to move, and the top of the guide rods 14 will move along the inside of the tank top 2. By providing the guide rods 14, the guide rods 14 will limit the movement of the baffle 6. Furthermore, a limiting ring 15 is fixedly connected to the top of the guide rod 14. The limiting ring 15 is located at the top of the tank top 2. By setting the limiting ring 15, the limiting ring 15 will limit the movement of the guide rod 14 and prevent one end of the guide rod 14 from leaving the interior of the tank top 2.

[0018] Working principle: The coarse coal is conveyed at a constant speed to the feed inlet 3 by a screw conveyor. The coarse coal falls into the filter tank 1 through the feed inlet 3 and is screened on the filter plate 4. The clean coal that meets the particle size requirements passes through the screen holes of the filter plate 4 and falls to the bottom of the filter tank 1, while the large pieces of residue that exceed the particle size standard slide down naturally along the inclined surface of the filter plate 4 and are discharged from the waste outlet 5 later. During the coarse coal filtration process, the water inlet 7 injects clean water into the filter tank 1. When the clean water flows through the surface of the filter plate 4, it can wash the coarse coal, dissolve or disperse the fine coal powder attached to the surface of the coarse coal, and accelerate the efficiency of clean coal passing through the screen holes. On the other hand, it can prevent the coarse coal from drying and accumulating on the top of the filter plate 4, and prevent the screen holes from being blocked and affecting the filtration progress.

[0019] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A self-unloading coarse coal slime separator, comprising a filter tank (1), characterized in that, The top of the filter tank (1) is fixedly connected to the tank top (2). The top of one side of the filter tank (1) is fixedly connected to the feed inlet (3). The inside of the filter tank (1) is fixedly connected to the filter plate (4). The other side of the filter tank (1) is fixedly connected to the waste outlet (5). The inside of the waste outlet (5) is movably connected to the baffle (6). The bottom of one side of the filter tank (1) is fixedly connected to the discharge outlet (8). The top of the tank top (2) is fixedly connected to the water inlet (7). The water inlet (7) is connected to the inside of the filter tank (1). One end of the tank top (2) is fixedly connected to the electric push rod (12). The bottom of the electric push rod (12) is fixedly connected to the connecting plate (13). The bottom of the connecting plate (13) is fixedly connected to the top of the baffle (6).

2. The self-unloading coarse coal slime separator according to claim 1, characterized in that, A servo motor (9) is provided on the top of the tank top (2). A rotating shaft (10) is fixedly connected to the bottom of the servo motor (9). A blade (11) is fixedly connected to the bottom of the rotating shaft (10). The blade (11) is rotatably connected to the bottom of the filter tank (1).

3. A self-unloading coarse coal slime separator according to claim 2, characterized in that, The top of the shaft (10) is rotatably connected to the inside of the tank top (2), and the middle part of the shaft (10) is rotatably connected to the inside of the filter plate (4).

4. A self-unloading coarse coal slime separator according to claim 1, characterized in that, The filter plate (4) is tilted, the feed inlet (3) is higher than the waste outlet (5), the feed inlet (3) is located at the top end of the filter plate (4), and the waste outlet (5) is located at the bottom end of the filter plate (4).

5. A self-unloading coarse coal slime separator according to claim 1, characterized in that, The top of the connecting plate (13) is fixedly connected to two guide rods (14), and the top of the guide rods (14) is movably connected to the inside of the tank top (2).

6. A self-unloading coarse coal slime separator according to claim 5, characterized in that, The top of the guide rod (14) is fixedly connected to a limiting ring (15), which is located at the top of the tank top (2).

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