Coal water slurry waste liquid recovery device

Abstract

The utility model discloses a coal water slurry waste liquid recovery device which comprises a three-way device, and three outlets of the three-way device are connected with a cut-off gate valve a, a cut-off gate valve b and a cut-off gate valve c respectively. The cut-off gate valve a is connected with a slurrying pool through a pipeline, and a slurry pump is arranged on the pipeline between the cut-off gate valve a and the slurrying pool; the cut-off gate valve b is connected with a waste slurry tank through a pipeline; the cut-off gate valve c is connected with a feeding cylinder through a feeding pipe, a filter screen is arranged at the bottom of an inner cavity of the feeding cylinder, and the bottom of the feeding cylinder is communicated with a slurry return tank. According to the utility model, two pipelines for recycling the waste water of the coal water slurry are provided, and different recycling pipelines are selected according to the generated amount of the waste water of the coal water slurry, so that the energy consumption is reduced, the cost is reduced and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water-coal slurry waste liquid recovery and relates to a water-coal slurry waste liquid recovery device. Background Art

[0002] Long-distance pipeline coal transportation requires the head end station to provide stable and qualified coal slurry. Part of the slurry and water mixture will be produced during the production process of the equipment. The slurry and water mixture collected in the waste slurry pool is pumped to the rod mill for further processing. Due to the long distance of the waste slurry pool, there are problems such as excessive energy consumption during operation, excessive liquid pressure in the waste slurry pool, too much coarse coal and gangue sedimentation at the bottom of the waste slurry pool that cannot be cleaned, and large wear of submersible sewage pumps and submersible agitators. It is necessary to propose a new water-coal slurry waste liquid recovery device to overcome the above problems. Utility Model Content

[0003] The utility model aims to provide a water-coal slurry waste liquid recovery device, which provides two pipelines for recovering and utilizing the water-coal slurry waste liquid and solves the problem of excessive energy consumption during operation in the prior art.

[0004] The technical scheme adopted by the utility model is that the water-coal slurry waste liquid recovery device comprises a tee, the three outlets of the tee are respectively connected with a cut-off gate valve a, a cut-off gate valve b and a cut-off gate valve c; the cut-off gate valve a is connected with a pulping pool through a pipeline, and a slurry pump is arranged on the pipeline between the cut-off gate valve a and the pulping pool; the cut-off gate valve b is connected with a waste pulp pool through a pipeline; the cut-off gate valve c is connected with a feed barrel through a feed pipe, a filter screen is arranged at the bottom of the inner cavity of the feed barrel, and a return pulp tank is arranged at the bottom of the feed barrel.

[0005] The utility model is also characterized in that:

[0006] A water-coal slurry waste liquid recovery device, a feed port is provided above the side wall of the feed barrel; the feed pipe includes a first feed pipe and a second feed pipe connected in sequence; the second feed pipe is arranged obliquely, and one end of the second feed pipe arranged at a low position is connected to the first feed pipe, the first feed pipe is connected to the shut-off gate valve c, and the second feed pipe extends to the inside of the feed barrel through the feed port.

[0007] The water-coal slurry waste liquid recovery device has an angle between the second feed pipe and the inner wall of the feed barrel of 70 to 82 degrees.

[0008] The water-coal slurry waste liquid recovery device has a material distribution baffle on the upper part of the inner cavity of the feed barrel, which is arranged in an inclined manner, and one end of the material distribution baffle arranged at a high position is located 5 to 10 cm above the feed inlet.

[0009] In the water-coal slurry waste liquid recovery device, the angle between the material distribution baffle and the inner wall of the feed barrel is 70 to 80 degrees.

[0010] The water-coal slurry waste liquid recovery device has an end portion of a second feed pipe with an oblique opening, and a plane where the oblique opening is located is parallel to a plane where the material distribution baffle is located.

[0011] The beneficial effects of the utility model are:

[0012] 1. By setting up a three-way device, two pipelines for recycling water-coal slurry waste liquid are provided. The first route takes the water-coal slurry waste liquid into a long-distance waste slurry pool, and pumps the coal slurry to the rod mill for re-grinding and processing; the second route flows to the return slurry tank after filtering through the feed barrel, and then pumps it to the rod mill for re-grinding and processing. Different recycling pipelines are selected according to the amount of water-coal slurry waste liquid generated, which reduces energy consumption, reduces costs and increases efficiency.

[0013] 2. A material distribution baffle is set in the feeding barrel so that the water-coal slurry waste liquid is scattered once on the material distribution baffle and then falls evenly on the filter screen, effectively eliminating the problem of the filter screen being blocked by the deposited solid coal slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of two pipelines for recycling water-coal slurry waste liquid in the utility model;

[0015] Figure 2 It is the internal structure diagram of the feeding barrel of the utility model.

[0016] In the figure, 1. pulping tank, 2. slurry pump, 3. tee, 4. waste slurry tank, 5. feed barrel, 6. return slurry tank, 7. cut-off gate valve a, 8. cut-off gate valve b, 9. cut-off gate valve c, 10. first feed pipe, 11. second feed pipe, 12. feed port, 13. material distribution baffle, 14. filter screen. DETAILED DESCRIPTION

[0017] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0018] The utility model provides a water-coal slurry waste liquid recovery device, such as Figure 1 As shown, it includes a tee 3, and the three outlets of the tee 3 are respectively connected to the shut-off gate valve a7, the shut-off gate valve b8 and the shut-off gate valve c9; the shut-off gate valve a7 is connected to the pulping pool 1 through a pipeline, and a slurry pump 2 is arranged on the pipeline between the shut-off gate valve a7 and the pulping pool 1; the shut-off gate valve b8 is connected to the waste pulp pool 4 through a pipeline; the shut-off gate valve c9 is connected to the feed barrel 5 through the feed pipe, and the flow direction of the water-coal slurry waste liquid can be adjusted at any time through the opening and closing coordination of the tee 3 and the shut-off gate valve a7, the shut-off gate valve b8 and the shut-off gate valve c9, and different recycling pipelines are selected according to the amount of the water-coal slurry waste liquid generated.

[0019] A filter screen 14 is provided at the bottom of the inner cavity of the feeding barrel 5. Figure 2As shown, the filter screen 14 prevents large particles of impurities in the water-coal slurry waste liquid from entering the re-slurry tank 6. The bottom of the feed barrel 5 is connected to the re-slurry tank 6. The water-coal slurry waste liquid flows directly into the re-slurry tank 6 after being filtered by the filter screen 14, and then is pumped to the rod mill for re-grinding and processing.

[0020] like Figure 2 As shown, a feed port 12 is provided above the side wall of the feed barrel 5; the feed pipe includes a first feed pipe 10 and a second feed pipe 11 connected in sequence; the second feed pipe 11 is arranged obliquely, and the angle between the second feed pipe 11 and the inner wall of the feed barrel 5 is 70 to 82 degrees, which can effectively prevent the formation of sediment in the second feed pipe 11 after the slurry pump 2 stops operating; one end of the second feed pipe 11 arranged at a low position is connected to the first feed pipe 10, the first feed pipe 10 is connected to the cut-off gate valve c9, and the second feed pipe 11 extends to the inside of the feed barrel 5 through the feed port 12. The end of the second feed pipe 11 is arranged obliquely, and the plane where the oblique mouth is located is parallel to the plane where the material distribution baffle 13 is located, ensuring that the water-coal slurry waste liquid can be evenly scattered and sprayed on the inclined material distribution baffle 13.

[0021] like Figure 2 As shown, a material dividing baffle 13 is provided at the upper part of the inner cavity of the feed barrel 5, and the material dividing baffle 13 is arranged in an inclined manner, and one end of the material dividing baffle 13 arranged at a high position is located 5 to 10 cm above the feed port 12; the angle between the material dividing baffle 13 and the inner wall of the feed barrel 5 is 70 to 80 degrees. The water-coal slurry waste liquid is sprayed on the inclined material dividing baffle 13 through the second feed pipe 11, and after a scattering, it falls evenly on the filter screen 14, effectively preventing the deposited solid coal slurry from clogging the filter screen 14.

[0022] The utility model provides two pipelines for recycling water-coal slurry waste liquid: under the action of the slurry pump 2, the first pipeline pumps the water-coal slurry waste liquid to a remote waste slurry pool 4, and then pumps the coal slurry to a rod mill for re-grinding and processing; the second pipeline of water-coal slurry waste liquid sequentially enters the feed barrel 5 through the first feed pipe 10 and the second feed pipe 11, and then flows to the return slurry tank 6 after being scattered by the material distribution baffle 13 and filtered by the filter screen 14, and then pumped to the rod mill for re-grinding and processing. Different recycling pipelines are selected according to the amount of water-coal slurry waste liquid generated, thereby reducing energy consumption, reducing costs and increasing efficiency.

[0023] Example 1

[0024] The utility model provides a water-coal slurry waste liquid recovery device, such as Figure 1As shown, it includes a three-way device 3, and the three outlets of the three-way device 3 are respectively connected to the cut-off gate valve a7, the cut-off gate valve b8 and the cut-off gate valve c9; the cut-off gate valve a7 is connected to the pulping pool 1 through a pipeline, and a slurry pump 2 is provided on the pipeline between the cut-off gate valve a7 and the pulping pool 1; the cut-off gate valve b8 is connected to the waste pulp pool 4 through a pipeline; the cut-off gate valve c9 is connected to the feed barrel 5 through the feed pipe, and a filter screen 14 is provided at the bottom of the inner cavity of the feed barrel 5, as shown in FIG. Figure 2 As shown, the bottom of the feeding cylinder 5 is connected to a re-slurry tank 6.

[0025] Example 2

[0026] On the basis of Example 1, a feed port 12 is provided above the side wall of the feed barrel 5; the feed pipe includes a first feed pipe 10 and a second feed pipe 11 connected in sequence; the second feed pipe 11 is arranged at an angle, and the angle between the second feed pipe 11 and the inner wall of the feed barrel 5 is 70 degrees; one end of the second feed pipe 11 arranged at a low position is connected to the first feed pipe 10, the first feed pipe 10 is connected to the shut-off gate valve c9, and the second feed pipe 11 extends to the inside of the feed barrel 5 through the feed port 12.

[0027] A material dividing baffle 13 is provided at the upper part of the inner cavity of the feeding barrel 5 . The material dividing baffle 13 is arranged obliquely, and the angle between the material dividing baffle 13 and the inner wall of the feeding barrel 5 is 70 degrees. One end of the material dividing baffle 13 arranged at a high position is located 5 cm above the feeding port 12 .

[0028] Example 3

[0029] Different from Example 2, the angle between the second feed pipe 11 and the inner wall of the feed barrel 5 is 76 degrees; the angle between the dividing baffle 13 and the inner wall of the feed barrel 5 is 75 degrees; and one end of the high-positioned dividing baffle 13 is located 7.5 cm above the feed port 12.

[0030] Example 4

[0031] Different from Example 2, the angle between the second feed pipe 11 and the inner wall of the feed barrel 5 is 82 degrees; the angle between the dividing baffle 13 and the inner wall of the feed barrel 5 is 80 degrees; and one end of the high-positioned dividing baffle 13 is located 10 cm above the feed port 12.

[0032] Example 5

[0033] On the basis of Example 2, the end of the second feed pipe 11 is arranged with an oblique opening, and the plane where the oblique opening is located is parallel to the plane where the material distribution baffle 13 is located.

Claims

1. A coal-water slurry waste liquid recovery device, characterized in that: The invention comprises a three-way device (3), wherein three outlets of the three-way device (3) are respectively connected to a cut-off gate valve a (7), a cut-off gate valve b (8) and a cut-off gate valve c (9); the cut-off gate valve a (7) is connected to a pulping pool (1) through a pipeline, and a slurry pump (2) is provided on the pipeline between the cut-off gate valve a (7) and the pulping pool (1); the cut-off gate valve b (8) is connected to a waste pulp pool (4) through a pipeline; the cut-off gate valve c (9) is connected to a feed barrel (5) through a feed pipe, a filter screen (14) is provided at the bottom of the inner cavity of the feed barrel (5), and a return pulp tank (6) is provided at the bottom of the feed barrel (5).

2. The coal water slurry waste liquid recovery device according to claim 1, characterized in that: A feed port (12) is provided above the side wall of the feed barrel (5); the feed pipe comprises a first feed pipe (10) and a second feed pipe (11) which are connected in sequence; the second feed pipe (11) is arranged obliquely, and one end of the second feed pipe (11) arranged at a lower position is connected to the first feed pipe (10), the first feed pipe (10) is connected to the shut-off gate valve c (9), and the second feed pipe (11) extends to the interior of the feed barrel (5) through the feed port (12).

3. The coal water slurry waste liquid recovery device according to claim 2, characterized in that: The included angle between the second feed pipe (11) and the inner wall of the feed barrel (5) is 70 to 82 degrees.

4. The coal water slurry waste liquid recovery device according to claim 3, characterized in that: A material distribution baffle (13) is provided at the upper part of the inner cavity of the feeding barrel (5). The material distribution baffle (13) is arranged in an inclined manner, and one end of the material distribution baffle (13) arranged at a high position is located 5 to 10 centimeters above the feeding port (12).

5. The coal water slurry waste liquid recovery device according to claim 4, characterized in that: The included angle between the material distribution baffle (13) and the inner wall of the feeding barrel (5) is 70 to 80 degrees.

6. The coal water slurry waste liquid recovery device according to claim 4 or claim 5, characterized in that: The end of the second feed pipe (11) is arranged with an oblique opening, and the plane where the oblique opening is located is parallel to the plane where the material distribution baffle (13) is located.

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