Coal slime and coal water separator

Abstract

The invention discloses a coal slime and coal water separator, comprising a cylinder with an inner cavity and a rotating shaft extending up and down and arranged and installed in the inner cavity, the rotating shaft is provided with more than two separation trays arranged in sequence from top to bottom, the upper surface of each separation tray is a concave surface, the height of the concave surface gradually decreases from the surrounding of the separation tray to the rotating shaft, the surrounding edges of each separation tray are provided with a plurality of slag notches for coal slag to fall, the rotating shaft is provided with a drainage channel for discharging filtered coal water, the rotating shaft is provided with a connecting hole for the coal water on the concave surface to flow into the drainage channel corresponding to each separation tray, the cylinder is provided with a feed port, the feed port is arranged above the uppermost separation tray, and the bottom of the cylinder is provided with a slag outlet and a water outlet connected to the drainage channel. The separator of the invention can effectively separate coal slime and coal water, and has the advantages of simple structure, low investment, convenient installation and use, and convenient operation.

Description

Technical Field

[0001] The invention relates to the technical field of coal-fired energy-saving and environmentally friendly equipment, and in particular to a coal-slurry-water separator. Background Art

[0002] With the progress of society, thermal power plants have higher and higher requirements for production environment. Most thermal power plants in my country use coal as fuel. At present, coal-fired thermal power plants have coal-water flowing across the production site, and fuel is placed randomly, which not only seriously affects the safe production of thermal power plants, but also poses a severe challenge to environmental protection. In addition, a large amount of high-quality coal water is washed away by rainwater (mainly open-air coal yards are washed by rainwater), resulting in huge economic losses.

[0003] Therefore, for the current production of coal-fired power plants, there is an urgent need to promptly and effectively treat coal slime and coal water and improve the level of management and control at the production site, which has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a coal slime-coal water separator which can effectively separate coal slime and coal water and has a simple structure, low investment, easy installation and use, and convenient operation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A coal-slurry-water separator comprises a cylinder having an inner cavity and a rotating shaft extending up and down and installed in the inner cavity, wherein the rotating shaft is provided with more than two separation trays arranged in sequence from top to bottom, the upper surface of each separation tray being a concave surface, the height of the concave surface gradually decreases from the surrounding of the separation tray to the rotating shaft, and the surrounding edges of each separation tray are provided with a plurality of slag notches for coal slag to fall, the rotating shaft is provided with a drainage channel for discharging filtered coal water, and the rotating shaft is provided with a connecting hole corresponding to each separation tray for allowing the coal water on the concave surface to flow into the drainage channel, the cylinder is provided with a feed port, and the feed port is provided above the uppermost separation tray, and the bottom of the cylinder is provided with a slag outlet and a water outlet connected to the drainage channel.

[0007] In the above-mentioned coal-slurry-coal-water separator, preferably, the concave surface is a curved surface.

[0008] In the above-mentioned coal-slurry-water separator, preferably, the rotating shaft extends out of the bottom of the cylinder, and the water outlet is directly arranged on the rotating shaft.

[0009] In the above-mentioned coal-slurry-coal-water separator, preferably, the slag-falling notches of any two adjacent separation trays are staggered with each other.

[0010] In the above-mentioned coal-slurry-coal-water separator, preferably, a protrusion structure is provided on the upper surface of the separation tray.

[0011] In the above-mentioned coal-slurry-water separator, preferably, the protruding structure is an arc-shaped strip blade that is bent in the same direction, and one end of the strip blade close to the rotating shaft is a sharp corner.

[0012] In the above-mentioned coal-slurry-coal-water separator, preferably, the cylinder is a top-opening structure, a cover is provided on the top of the cylinder, the cover is fixedly connected to the cylinder by fasteners, and the feed port is directly arranged on the cover.

[0013] In the above-mentioned coal-slurry-coal-water separator, preferably, a shaft sleeve is sleeved on the rotating shaft, the shaft sleeve is linked with the rotating shaft, and the separation tray is detachably connected to the shaft sleeve.

[0014] In the above-mentioned coal-slurry-coal-water separator, preferably, the separation tray is connected to the shaft sleeve by bolts.

[0015] The above-mentioned coal slime and coal water separator is preferably provided with a negative pressure device at the slag outlet, and the negative pressure device is provided with a cavity, and the cavity is connected to the slag outlet, and the negative pressure device is used to adsorb the coal slag output from the slag outlet into the cavity.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The coal slime and coal water separator of the present invention screens the coal slime and coal water step by step through a plurality of separation trays, so that the separation of the coal slime and coal water is more thorough; the separation tray is a concave tray, and the coal water flows to the center of the separation tray, which is conducive to improving the separation efficiency. The separator separates the coal slime and coal water in a physical way without polluting the environment. The separator has a simple structure, low investment, easy installation and use, and convenient operation. It has broad application prospects and can be widely used in coal-fired sites such as coal-fired power plants and coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of a coal slime-water separator.

[0019] Figure 2 This is a top view of the tray.

[0020] Figure 3 It is a schematic diagram of the appearance of a coal slime-water separator.

[0021] Legend:

[0022] 1. Cylinder; 11. Inner cavity; 2. Feed inlet; 3. Water outlet; 4. Slag outlet; 5. Separation tray; 6. Blades; 7. Negative pressure device; 8. Cover; 9. Bracket. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 3 As shown, the coal-slurry-coal-water separator of this embodiment comprises a cylinder 1 having an inner cavity 11 and a rotating shaft extending up and down and arranged and installed in the inner cavity 11. Two or more separation trays 5 arranged in sequence from top to bottom are installed on the rotating shaft. The upper surface of each separation tray 5 is a concave surface, and the height of the concave surface gradually decreases from the surrounding of the separation tray 5 to the rotating shaft. The surrounding edges of each separation tray 5 are provided with a plurality of slag-dropping notches for coal slag to fall. The rotating shaft is provided with a drainage channel for discharging filtered coal water. The rotating shaft is provided with a connecting hole for flowing coal water on the concave surface into the drainage channel corresponding to each separation tray 5. The cylinder 1 is provided with a feed port 2, which is arranged above the uppermost separation tray 5. The bottom of the cylinder 1 is provided with a slag outlet 4 and a water outlet 3 connected to the drainage channel. The bottom of the cylinder 1 is provided with three brackets 9, and the brackets 9 are evenly arranged along the bottom circumference of the cylinder 1. The rotating shaft drives the separation tray 5 to rotate in the inner cavity 11, and the coal slime and coal water mixture enters the inner cavity 11 of the cylinder 1 from the feed port 2 and falls onto the separation tray 5. The coal slime and coal water mixture rotates with the separation tray 5. Under the action of gravity and centrifugal force, the coal slag is thrown to the edge of the separation tray 5, and the coal water accumulates in the center of the separation tray 5, and the coal slag and coal water are separated. The filtered coal water flows into the drainage channel from the connecting hole and is finally discharged from the water outlet 3. The coal slag falls from the slag falling gap to the next layer of separation tray 5 or the bottom of the cylinder 1. The coal slime and coal water are screened step by step through the multiple layers of separation trays 5, and the separation of the coal slime and coal water is more thorough. The coal slag is finally discharged from the slag outlet 4 at the bottom of the cylinder 1. The separation tray 5 is a concave tray, and the coal water flows toward the center, which is conducive to improving the separation efficiency.

[0025] In this embodiment, the concave surface is a curved surface, which is conducive to the complete separation of coal mud and coal water.

[0026] In this embodiment, the rotating shaft extends out of the bottom of the cylinder 1, and the water outlet 3 is directly arranged on the rotating shaft. The separator has a compact structure and prevents the filtered coal water from contacting with the coal slag again.

[0027] In this embodiment, the slag notches of any two adjacent separation trays 5 are staggered to form a superposition effect, thereby preventing the coal slag from directly falling to the bottom of the cylinder 1 and avoiding incomplete separation of coal mud and coal water.

[0028] In this embodiment, a convex structure is provided on the upper surface of the separation tray 5. The convex structure can drive the material to rotate, which is beneficial to improving the separation efficiency of coal mud and coal water.

[0029] In this embodiment, the protruding structure is an arc-shaped strip blade 6 that is bent in the same direction, and one end of the strip blade 6 close to the rotating shaft is a sharp corner. The protruding structure can better drive the material to rotate and improve the separation efficiency.

[0030] In this embodiment, the cylinder 1 is an open-top structure, a cover 8 is provided on the top of the cylinder 1, the cover 8 is fixed to the cylinder 1 by fasteners, and the feed port 2 is directly provided on the cover 8. When disassembling the separation tray 5, the cover 8 is opened for easy operation.

[0031] In this embodiment, the rotating shaft is driven by a variable frequency motor, and the rotation speed ω of the rotating tray is automatically controlled according to the dilution degree of the coal mud and coal water at the feed inlet.

[0032] In this embodiment, a shaft sleeve is sleeved on the rotating shaft, the shaft sleeve and the rotating shaft are linked together, and the separation tray 5 is connected to the shaft sleeve in a detachable manner, so that the separation tray 5 can be easily replaced, added or reduced.

[0033] In this embodiment, the separation tray 5 is connected to the shaft sleeve by bolts. The separation tray 5 is firmly connected to the shaft sleeve and is easy to assemble and disassemble.

[0034] In this embodiment, a negative pressure device 7 is provided at the slag outlet 4. The negative pressure device 7 is provided with a cavity, which is connected to the slag outlet 4. The negative pressure device 7 is used to absorb the coal slag output from the slag outlet 4 into the cavity. The negative pressure device 7 is used to discharge the coal slag, effectively avoiding pipeline blockage, and the discharged dry coal slag material enters the coal yard for secondary utilization.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A coal-slurry-water separator, characterized in that: The invention comprises a cylinder (1) having an inner cavity (11) and a rotating shaft extending up and down and arranged in the inner cavity (11); the rotating shaft is provided with two or more separation trays (5) arranged in sequence from top to bottom; the upper surface of each separation tray (5) is a concave surface; the height of the concave surface gradually decreases from the surrounding of the separation tray (5) to the rotating shaft; the surrounding edges of each separation tray (5) are provided with a plurality of slag notches for coal slag to fall; the rotating shaft is provided with a drainage channel for discharging filtered coal water; the rotating shaft is provided with a connecting hole corresponding to each separation tray (5) for allowing the coal water on the concave surface to flow into the drainage channel; the cylinder (1) is provided with a feed port (2); the feed port (2) is arranged above the uppermost separation tray (5); the bottom of the cylinder (1) is provided with a slag outlet (4) and a water outlet (3) connected to the drainage channel; the slag notches of any two adjacent separation trays (5) are staggered; The upper surface of the separation tray (5) is provided with a protruding structure, the protruding structure is an arc-shaped strip blade (6) bent in the same direction, and one end of the strip blade (6) close to the rotating shaft is a sharp corner; the rotating shaft drives the separation tray (5) to rotate in the inner cavity (11), and the coal mud and coal water mixture enters the inner cavity (11) of the cylinder (1) from the feed port (2) and falls onto the separation tray (5). The coal mud and coal water mixture rotates with the separation tray (5), and under the action of gravity and centrifugal force, the coal slag is thrown to the edge of the separation tray (5), and the coal water accumulates in the center of the separation tray (5), and the coal slag and coal water are separated. The filtered coal water flows into the drainage channel from the connecting hole and is finally discharged from the water outlet (3). The coal slag falls from the slag falling gap to the next layer of separation tray (5) or the bottom of the cylinder (1). The coal mud and coal water are screened step by step through the multiple layers of separation trays (5), and the coal mud and coal water are separated more thoroughly. The coal slag is finally discharged from the slag outlet (4) at the bottom of the cylinder (1).

2. The coal-slurry-water separator according to claim 1, characterized in that: The concave surface is a curved surface.

3. The coal-slurry-water separator according to claim 1, characterized in that: The rotating shaft extends out of the bottom of the cylinder (1), and the water outlet (3) is directly arranged on the rotating shaft.

4. The coal-slurry-water separator according to claim 1, characterized in that: The cylinder (1) is a top-opening structure. A cover (8) is provided on the top of the cylinder (1). The cover (8) is fixedly connected to the cylinder (1) via fasteners. The feed port (2) is directly provided on the cover (8).

5. The coal-slurry-water separator according to claim 4, characterized in that: A shaft sleeve is sleeved on the rotating shaft, the shaft sleeve is linked with the rotating shaft, and the separation tray (5) is connected to the shaft sleeve in a detachable manner.

6. The coal-slurry-water separator according to claim 5, characterized in that: The separation tray (5) is bolted to the shaft sleeve.

7. The coal-slurry-water separator according to any one of claims 1 to 6, characterized in that: A negative pressure device (7) is provided at the slag outlet (4), the negative pressure device (7) being provided with a cavity, the cavity being connected to the slag outlet (4), the negative pressure device (7) being used to absorb the coal slag output from the slag outlet (4) into the cavity.

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