Heavy-medium cyclone and heavy-medium shallow slot combined gravity separation coal washer

Abstract

The invention relates to the technical field of coal washing, and discloses a heavy medium cyclone and heavy medium shallow groove combined gravity separation coal washer which comprises a first support, a second support, a third support, a feeding hopper, a coarse removal screening device, a first low-quality medium removal screening device, a coal conveying channel, a second low-quality medium removal screening device, a first medium tank, a second medium tank and a magnetic rotating machine. The coarse removal sifter is installed on the first support, a first conveying belt is arranged between the feeding hopper and the coarse removal sifter, the first low-quality medium drainage sifter, the second low-quality medium drainage sifter, the first medium tank, the second medium tank and the magnetic rotating machine are all installed on the second support, the first low-quality medium drainage sifter is provided with a shallow groove, the shallow groove is provided with a coal conveying channel, the shallow groove is communicated with the coal conveying channel, and the coal conveying channel is communicated with the first medium tank. And an outlet of the coal conveying channel is connected with the low-quality medium drainage screener 1. According to the coal washing device, coal needing to be washed can be screened, coal with large particles and coal with small particles are washed separately, time is shortened, and more water resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of coal washing, and in particular to a heavy medium cyclone and a heavy medium shallow tank combined gravity separation coal washer. Background Art

[0002] Coal washing is an indispensable process in coal deep processing. The coal directly mined from the mine is called raw coal. Many impurities are mixed into the raw coal during the mining process, and the quality of coal is also different. Coal with low intrinsic ash content and coal with high intrinsic ash content are mixed together. Coal washing is an industrial process to remove impurities from raw coal or to classify high-quality coal from low-quality coal. The products produced after the coal washing process are generally divided into gangue, medium coal, Class B clean coal and Class A clean coal. The finished coal after the coal washing process is usually called clean coal. By washing coal, the cost of coal transportation can be reduced and the utilization rate of coal can be improved. Clean coal is an energy source that can generally be used as fuel. Clean coal of bituminous coal is generally used for coking. It needs to go through industrial processes such as desulfurization and impurity removal to meet the standards for coking.

[0003] However, the coal washing equipment or processes currently used have many disadvantages such as high water resource consumption, environmental pollution, high equipment cost, etc., and the coal to be washed is not screened, so that large coal particles and small coal particles are washed together, resulting in incomplete cleaning of larger coal blocks, and a longer cleaning time for smaller coal blocks, consuming more water resources. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a heavy medium cyclone and a heavy medium shallow tank combined gravity separation coal washer.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heavy medium cyclone and a heavy medium shallow trough combined heavy separation coal washing machine, including a bracket one, a bracket two, a bracket three, a feed hopper, a coarse removal screen, a low-quality medium removal screen one, a coal conveying channel, a low-quality medium removal screen two, a medium tank one, a medium tank two and a magnetic gyroscope, the feed hopper is installed on the bracket one, the coarse removal screen is installed on the bracket one, a conveyor belt one is arranged between the feed hopper and the coarse removal screen, the low-quality medium removal screen one, the low-quality medium removal screen two, the medium tank one, the medium tank two and the magnetic gyroscope are all installed on the bracket two, a shallow trough is installed on the low-quality medium removal screen one, a coal conveying channel is installed on the shallow trough, the shallow trough is communicated with the coal conveying channel, the outlet of the coal conveying channel is connected to the low-quality medium removal screen one, a conveyor belt two is installed between the shallow trough and the coarse removal screen, and a conveyor belt three is installed between the medium tank two and the coarse removal screen;

[0006] Water pump 1, water pump 2, water pump 3 and water pump 4 are installed on the bracket 2. A delivery pipe 1 is provided between the inlet of the water pump 1 and the low-quality medium-removing screener 1, a delivery pipe 2 is provided between the outlet of the water pump 1 and the magnetic gyroscope, a delivery pipe 3 is provided between the low-quality medium-removing screener 1 and the medium tank 1, a delivery pipe 4 is provided between the inlet of the water pump 2 and the medium tank 1, a delivery pipe 5 is provided between the outlet of the water pump 2 and the shallow trough, a delivery pipe 6 is provided between the inlet of the water pump 3 and the medium tank 2, a cyclone is installed on the low-quality medium-removing screener 2, a delivery pipe 7 is provided between the outlet of the water pump 3 and the cyclone, a delivery pipe 8 is provided between the inlet of the water pump 4 and the low-quality medium-removing screener 2, and a delivery pipe 9 is provided between the outlet of the water pump 4 and the magnetic gyroscope;

[0007] The bracket three is equipped with an oscillating screener, a clean water tank, a sedimentation tank, a dosing tank, a drug mixing box, a water pump five, a water pump six and a filter press. The inlet of the oscillating screener is connected to the outlet of the magnetic gyroscope. The oscillating screener is provided with a delivery pipe ten. A delivery pipe eleven is provided between the inlet of the water pump five and the sedimentation tank. A delivery pipe twelve is provided between the outlet of the water pump five and the filter press. The filter press is provided with a guide groove. A delivery pipe thirteen is provided between the inlet of the water pump six and the clean water tank. A main pipeline is provided on the outlet of the water pump six. A plurality of branch pipelines are provided on the main pipeline. A plurality of valves are provided on the plurality of branch pipelines. A connecting pipe one is provided between the dosing tank and the drug mixing box. A connecting pipe two is provided between the drug mixing box and the sedimentation tank. Solenoid valves are provided on both the connecting pipe one and the connecting pipe two.

[0008] The low-quality medium removal screener 1 and the low-quality medium removal screener 2 are arranged in parallel in plurality.

[0009] One end of the conveyor belt one is located below the feed hopper, the other end of the conveyor belt one is located above the coarse de-sieving screener, one end of the conveyor belt two is located below the coarse de-sieving screener, the other end of the conveyor belt two is located above the shallow trough, one end of the conveyor belt three is located below the coarse de-sieving screener, and one end of the conveyor belt three is located above the medium tank two.

[0010] The dosing tank is provided in plurality.

[0011] The conveying pipe 10 extends to above the sedimentation tank.

[0012] One end of the guide groove extends to the top of the clean water tank.

[0013] The multiple branch pipes provide water sources for the low-quality medium removal screener 1, the low-quality medium removal screener 2 and the dosing tank respectively, and one of the branch pipes is provided with a spray, which is used to spray water on the drum of the magnetic rotary machine.

[0014] The low-quality medium removal screener 1 is the same as the low-quality medium removal screener 2, and the medium tank 1 is the same as the medium tank 2.

[0015] The present invention has the following beneficial effects:

[0016] The coal to be cleaned is transported to the de-coarsening screener through the conveyor belt 1. The de-coarsening screener separates the coal according to its diameter and performs preliminary screening on the coal. The coal with small diameter is transported to the medium tank 2 through the conveyor belt 3, and the coal with medium diameter is transported to the shallow trough through the conveyor belt 2. The coal with large diameter can be discharged through the low-quality de-coarsening screener 1, and the coal with small diameter can be flowed into the low-quality de-coarsening screener 2 for treatment through the cyclone, so that the coal with large particles is separated from the coal with small particles, and then processed according to the size of the coal blocks, thereby saving the cleaning time;

[0017] Water flows into the low-quality medium removal screener 1, and under the action of water pump 1, the water is input into the magnetic gyroscope, and then the water flows into the oscillating screener through the magnetic gyroscope, and then flows into the sedimentation tank through the delivery pipe 10. The water or mud-water mixture in the sedimentation tank is delivered to the filter press through the water pump 5, and the water in the filter press flows into the clean water tank again through the guide groove, and the cycle is repeated in sequence; and the water flows into the low-quality medium removal screener 1 through the delivery pipe 3 and flows into the medium tank 1. The water in the medium tank 1 flows into the shallow trough through the water pump 2 17, and the shallow trough flows into the low-quality medium removal screener 1, and the cycle is repeated in sequence, so that the water is circulated to save water resources for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the mobile heavy medium cyclone and the heavy medium shallow tank combined heavy separation coal washer of the present invention;

[0019] Figure 2 The local structure of the mobile heavy medium cyclone and the heavy medium shallow tank combined heavy separation coal washing machine of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 3 The local structure of the mobile heavy medium cyclone and the heavy medium shallow tank combined heavy separation coal washing machine of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 4 The local structure of the mobile heavy medium cyclone and the heavy medium shallow tank combined heavy separation coal washing machine of the present invention is shown in FIG. Figure 3 ;

[0022] Figure 5 It is a schematic diagram of a low-quality medium removal screener of a mobile heavy medium cyclone and a heavy medium shallow tank combined heavy medium coal washing machine of the present invention;

[0023] Figure 6 It is a schematic diagram of a medium tank of a mobile heavy medium cyclone and a heavy medium shallow tank combined heavy separation coal washer of the present invention;

[0024] Figure 7 It is a schematic diagram of an oscillating screener and a magnetic cyclone of a mobile heavy medium cyclone and a heavy medium shallow tank combined heavy separation coal washer of the present invention;

[0025] Figure 8 It is a schematic diagram of a filter press of a mobile heavy medium cyclone and a heavy medium shallow tank combined with a heavy medium coal washer of the present invention.

[0026] Legend:

[0027] 1. Bracket 1; 2. Bracket 2; 3. Bracket 3; 4. Feed hopper; 5. Coarse removal screen; 6. Low-quality medium removal screen 1; 7. Low-quality medium removal screen 2; 8. Medium tank 1; 9. Medium tank 2; 10. Magnetic cyclone; 11. Shallow trough; 12. Coal conveying channel; 13. Conveyor belt 1; 14. Conveyor belt 2; 15. Conveyor belt 3; 16. Water pump 1; 17. Water pump 2; 18. Water pump 3; 19. Water pump 4; 20. Cyclone; 21. Oscillating screen; 22. Clean water tank; 23. Sedimentation tank; 24. Dosing tank; 25. Chemical mixing box; 26. Water pump 5; 27. Water pump 6; 28. Filter press; 29. ​​Diversion trough; 30. Main pipeline. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Reference Figures 1 to 8 As shown, the present invention adopts the following technical scheme: a heavy medium cyclone and a heavy medium shallow tank combined heavy separation coal washing machine, including a bracket 1, a bracket 2, a bracket 3, a feed hopper 4, a coarse removal screen 5, a low-quality medium removal screen 6, a coal conveying channel 12, a low-quality medium removal screen 7, a medium tank 18, a medium tank 29 and a magnetic cyclone 10, the feed hopper 4 is installed on the bracket 1, the coarse removal screen 5 is installed on the bracket 1, a conveyor belt 13 is provided between the feed hopper 4 and the coarse removal screen 5, the low-quality medium removal screen The separator 16, the low-quality medium-removing screen 27, the medium tank 18, the medium tank 29 and the magnetic gyroscope 10 are all installed on the bracket 22, the low-quality medium-removing screen 16 is installed with a shallow groove 11, the shallow groove 11 is installed with a coal conveying channel 12, the shallow groove 11 is communicated with the coal conveying channel 12, the outlet of the coal conveying channel 12 is connected with the low-quality medium-removing screen 16, a conveyor belt 2 14 is installed between the shallow groove 11 and the coarse-removing screen 5, and a conveyor belt 3 15 is installed between the medium tank 29 and the coarse-removing screen 5;

[0030] A water pump 16, a water pump 2 17, a water pump 3 18 and a water pump 4 19 are installed on the bracket 2, a delivery pipe 1 is provided between the inlet of the water pump 16 and the low-quality medium-removing screener 16, a delivery pipe 2 is provided between the outlet of the water pump 16 and the magnetic gyroscope 10, a delivery pipe 3 is provided between the low-quality medium-removing screener 16 and the medium tank 18, a delivery pipe 4 is provided between the inlet of the water pump 2 17 and the medium tank 18, a delivery pipe 5 is provided between the outlet of the water pump 2 17 and the shallow groove 11, a delivery pipe 6 is provided between the inlet of the water pump 3 18 and the medium tank 29, a cyclone 20 is installed on the low-quality medium-removing screener 27, a delivery pipe 7 is provided between the outlet of the water pump 3 18 and the cyclone 20, a delivery pipe 8 is provided between the inlet of the water pump 4 19 and the low-quality medium-removing screener 27, and a delivery pipe 9 is provided between the outlet of the water pump 4 19 and the magnetic gyroscope 10;

[0031] The support three 3 is equipped with an oscillating screener 21, a clean water tank 22, a sedimentation tank 23, a dosing tank 24, a drug mixing box 25, a water pump five 26, a water pump six 27 and a filter press 28. The inlet of the oscillating screener 21 is connected to the outlet of the magnetic gyroscope 10. A delivery pipe ten is provided on the oscillating screener 21. A delivery pipe eleven is provided between the inlet of the water pump five 26 and the sedimentation tank 23. A delivery pipe twelve is provided between the outlet of the water pump five 26 and the filter press 28. A guide groove 29 is provided on the filter press 28, a delivery pipe thirteen is provided between the inlet of the water pump six 27 and the clean water tank 22, a main pipeline 30 is provided on the outlet of the water pump six 27, a plurality of branch pipelines are provided on the main pipeline 30, a plurality of valves are provided on the plurality of branch pipelines, a connecting pipe one is provided between the dosing tank 24 and the chemical mixing box 25, a connecting pipe two is provided between the chemical mixing box 25 and the sedimentation tank 23, and solenoid valves are provided on both the connecting pipe one and the connecting pipe two.

[0032] The low-quality medium removal screener 1 6 and the low-quality medium removal screener 2 7 are arranged in parallel in plurality.

[0033] One end of the conveyor belt 13 is located below the feed hopper 4, the other end of the conveyor belt 13 is located above the coarse de-sieving screen 5, one end of the conveyor belt 2 14 is located below the coarse de-sieving screen 5, the other end of the conveyor belt 2 14 is located above the shallow groove 11, one end of the conveyor belt 3 15 is located below the coarse de-sieving screen 5, and one end of the conveyor belt 3 15 is located above the medium tank 2 9.

[0034] There are multiple dosing tanks 24 .

[0035] The conveying pipe 10 extends to above the sedimentation tank 23.

[0036] One end of the guide groove 29 extends to the top of the clean water tank 22 .

[0037] The plurality of branch pipes provide water sources for the low-quality medium removal screener 1 6 , the low-quality medium removal screener 2 7 and the dosing tank 24 , respectively. One of the branch pipes is provided with a sprayer, which is used to spray water on the drum of the magnetic gyroscope 10 .

[0038] The low-quality medium removal screener 1 6 is the same as the low-quality medium removal screener 2 7 , and the medium tank 1 8 is the same as the medium tank 2 9 .

[0039] When using, let the water circulate first. The specific steps of water circulation are as follows:

[0040] First, start the water pump 6 27, which supplies water from the clean water tank 22 to multiple devices through the main pipeline 30 and multiple branch pipelines (when there is water in each device, the water pumps 16 to 5 26 can be started);

[0041] Specifically, when water flows into the low-quality medium-removing screener 6, the water is input into the magnetic gyroscope 10 under the action of the water pump 16, and then the water flows into the oscillating screener 21 through the magnetic gyroscope 10, and then flows into the sedimentation tank 23 through the conveying pipe 10, and the water or muddy water mixture in the sedimentation tank 23 is conveyed to the filter press 28 through the water pump 5 26, and the water in the filter press 28 flows into the clean water tank 22 again through the guide groove 29, and the cycle is repeated in sequence. The cycle of water entering the low-quality medium-removing screener 27 is the same as that of the low-quality medium-removing screener 6 and is not described here;

[0042] Water flows into the low-quality medium removal screener 16 and flows into the medium tank 18 through the delivery pipe 3. The water in the medium tank 8 flows into the shallow groove 11 through the water pump 2 17. The shallow groove 11 flows into the low-quality medium removal screener 16, and circulates in sequence. The water flows into the low-quality medium removal screener 27 and flows into the medium tank 29. The process is the same as the water flowing into the low-quality medium removal screener 16 and flowing into the medium tank 18 through the delivery pipe 3, which will not be described here.

[0043] Then start the conveyor belt 13, the conveyor belt 2 14 and the conveyor belt 3 15. The conveyor belt 13 transports the coal to be cleaned to the de-coarsening screen 5. The de-coarsening screen 5 divides the coal to be cleaned into diameters of 40 mm and 40 mm to 160 mm. The coal below 40 mm is transported to the medium tank 2 9 through the conveyor belt 3 15, and the coal between 40 mm and 160 mm is transported to the shallow groove 11 through the conveyor belt 2 14. The coal between 40 mm and 160 mm can be discharged after being processed by the low-quality de-coarsening screen 1 6. The coal below 40 mm flows into the low-quality de-coarsening screen 2 7 through the cyclone 20 for processing, and is discharged after being processed by the oscillating screen 21 as the water circulates to the magnetic cyclone 10. The mud in the filter press 28 is formed into a cake shape under the extrusion of the filter press 28 as the water circulates.

[0044] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A heavy medium cyclone and heavy medium shallow tank combined heavy separation coal washing machine, comprising a bracket 1 (1), a bracket 2 (2), a bracket 3 (3), a feed hopper (4), a coarse removal screen (5), a low-quality medium removal screen 1 (6), a coal conveying channel (12), a low-quality medium removal screen 2 (7), a medium tank 1 (8), a medium tank 2 (9) and a magnetic cyclone (10), wherein the feed hopper (4) is mounted on the bracket 1 (1), the coarse removal screen (5) is mounted on the bracket 1 (1), a conveyor belt 1 (13) is provided between the feed hopper (4) and the coarse removal screen (5), the low-quality medium removal screen 1 (6), the ...) and the low-quality medium removal screen 2 (7) are mounted on the bracket 1 (1), a conveyor belt 1 (13) is provided between the feed hopper (4) and the coarse removal screen (5), the low-quality medium removal screen 1 (6), the low-quality medium removal screen 2 (7) and the low-quality medium removal screen 2 (7) are mounted on the bracket 1 (1), a conveyor belt 1 (13) is provided between the feed hopper (4) and the coarse removal screen (5), the low-quality medium removal screen 1 (6), the low-quality medium removal screen 2 (7) and the low-quality medium removal screen 2 (7) are mounted on the bracket 1 (1), a conveyor belt 1 (1 The second de-medium screener (7), the first medium tank (8), the second medium tank (9) and the magnetic gyroscope (10) are all installed on the second bracket (2); the first low-quality de-medium screener (6) is provided with a shallow groove (11); the shallow groove (11) is provided with a coal conveying channel (12); the shallow groove (11) is communicated with the coal conveying channel (12); the outlet of the coal conveying channel (12) is connected with the first low-quality de-medium screener (6); a second conveyor belt (14) is installed between the shallow groove (11) and the de-coarse screener (5); and a third conveyor belt (15) is installed between the second medium tank (9) and the de-coarse screener (5); The support 2 (2) is provided with a water pump 1 (16), a water pump 2 (17), a water pump 3 (18) and a water pump 4 (19). A delivery pipe 1 is provided between the inlet of the water pump 1 (16) and the low-quality medium removal screen 1 (6). A delivery pipe 2 is provided between the outlet of the water pump 1 (16) and the magnetic gyroscope (10). A delivery pipe 3 is provided between the low-quality medium removal screen 1 (6) and the medium tank 1 (8). A delivery pipe 4 is provided between the inlet of the water pump 2 (17) and the medium tank 1 (8). A delivery pipe 5 is provided between the outlet of the second (17) and the shallow trough (11), a delivery pipe 6 is provided between the inlet of the water pump 3 (18) and the medium tank 2 (9), a cyclone (20) is installed on the low-quality medium removal screen 2 (7), a delivery pipe 7 is provided between the outlet of the water pump 3 (18) and the cyclone (20), a delivery pipe 8 is provided between the inlet of the water pump 4 (19) and the low-quality medium removal screen 2 (7), and a delivery pipe 9 is provided between the outlet of the water pump 4 (19) and the magnetic cyclone (10); The support three (3) is equipped with an oscillating screener (21), a clean water tank (22), a sedimentation tank (23), a dosing tank (24), a drug mixing box (25), a water pump five (26), a water pump six (27) and a filter press (28). The inlet of the oscillating screener (21) is connected to the outlet of the magnetic gyroscope (10). The oscillating screener (21) is provided with a delivery pipe ten. A delivery pipe eleven is provided between the inlet of the water pump five (26) and the sedimentation tank (23). A delivery pipe eleven is provided between the outlet of the water pump five (26) and the filter press (28). Pipe 12, a guide groove (29) is provided on the filter press (28), a delivery pipe 13 is provided between the inlet of the water pump 6 (27) and the clean water tank (22), a main pipeline (30) is provided on the outlet of the water pump 6 (27), a plurality of branch pipelines are provided on the main pipeline (30), a plurality of valves are provided on the plurality of branch pipelines, a connecting pipe 1 is provided between the dosing tank (24) and the drug mixing box (25), a connecting pipe 2 is provided between the drug mixing box (25) and the sedimentation tank (23), and both the connecting pipe 1 and the connecting pipe 2 are provided with solenoid valves. The low-quality medium removal screener one (6) and the low-quality medium removal screener two (7) are arranged in parallel in plurality. One end of the conveyor belt one (13) is located below the feed hopper (4), the other end of the conveyor belt one (13) is located above the coarse de-sieving screen (5), one end of the conveyor belt two (14) is located below the coarse de-sieving screen (5), the other end of the conveyor belt two (14) is located above the shallow groove (11), one end of the conveyor belt three (15) is located below the coarse de-sieving screen (5), and one end of the conveyor belt three (15) is located above the medium tank two (9).

2. The heavy medium cyclone and heavy medium shallow tank combined gravity separation coal washer according to claim 1, characterized in that: The drug adding tank (24) is provided in plurality.

3. The heavy medium cyclone and heavy medium shallow tank combined gravity separation coal washer according to claim 1, characterized in that: The conveying pipe 10 extends to above the sedimentation tank (23).

4. The heavy medium cyclone and heavy medium shallow tank combined gravity separation coal washer according to claim 1, characterized in that: The plurality of branch pipes respectively provide water sources for the low-quality medium removal screener 1 (6), the low-quality medium removal screener 2 (7) and the dosing tank (24), wherein one of the branch pipes is provided with a sprayer for spraying water on the drum of the magnetic gyroscope (10).

5. The heavy medium cyclone and heavy medium shallow tank combined gravity separation coal washer according to claim 1, characterized in that: The low-quality medium removal screener 1 (6) is the same as the low-quality medium removal screener 2 (7), and the medium tank 1 (8) is the same as the medium tank 2 (9).

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