Negative pressure entrainment dust removal method and device

Abstract

The invention relates to a negative pressure entrainment dust removal method and device, and belongs to the technical field of coal mine dust prevention. The device comprises a water storage tank, the upper surface of the water storage tank is fixedly connected with a dust removal cylinder, the outer surface of the dust removal cylinder fixedly communicates with a flow guide cover, a flow guide opening is formed in the left side face of the flow guide cover, a fixed pipe is fixedly installed on the inner ring of the flow guide opening, and the inner ring of the fixed pipe is fixedly connected with a dust suction pipe; the outer surface of the dust suction pipe fixedly communicates with a telescopic hose, the top end of the telescopic hose fixedly communicates with a dust suction top pipe, a booster water pump is fixedly installed on the back face of the water storage tank, the input end of the booster water pump fixedly communicates with a water pumping pipe, and the bottom end of the water pumping pipe penetrates through the water storage tank and extends into the water storage tank. According to the negative-pressure entrainment dust removal method and device, the effect of entrainment dust removal during coal mining is achieved, the effect of catching floating dust between the hydraulic supports is improved, and the problem that the effect of the spraying diffusion range of a fully mechanized coal mining face is poor at present is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust prevention and relates to a negative pressure suction dust removal method and device. Background Art

[0002] A large amount of dust is generated in the production process at various work sites underground in coal mines. Coal mine dust is a general term for various types of fine particles of solid matter generated in the production process of coal mines. Its unique properties determine that it is very harmful, such as inducing occupational disease pneumoconiosis, accelerating the wear of mechanical equipment, shortening the service life of precision instruments, and even causing coal dust explosion accidents.

[0003] During coal mining, the dust problem between hydraulic supports has always plagued the mining industry. Although traditional dust removal methods have reduced the generation of dust to a certain extent, the spray diffusion range of the comprehensive mining working face is wide and the diffusion distance is long, and it is difficult to capture the floating dust, and the effect is not ideal, which reduces the dust removal effect during coal mining. For this reason, the present invention provides a negative pressure suction dust removal method and device. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a negative pressure suction dust removal method and device, which solves the problem that the current comprehensive mining working face has a wide spray diffusion range and a long diffusion distance, it is difficult to capture floating dust, the effect is not ideal, and the dust removal effect during coal mining is reduced.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A negative pressure suction dust removal device comprises a water storage tank, the upper surface of the water storage tank is fixedly connected to a dust removal cylinder, the outer surface of the dust removal cylinder is fixedly connected to a guide cover, the left side of the guide cover is provided with a guide port, the inner circle of the guide port is fixedly installed with a fixed pipe, the inner circle of the fixed pipe is fixedly connected to a dust suction pipe, the outer surface of the dust suction pipe is fixedly connected to a telescopic hose, the top end of the telescopic hose is fixedly connected to a dust suction top pipe, a booster water pump is fixedly installed on the back of the water storage tank, the input end of the booster water pump is fixedly connected to a water pumping pipe, and the water pumping pipe The bottom end of the tube passes through the water tank and extends to the interior of the water tank, the output end of the booster water pump is fixedly connected with a water pipe, the end of the water pipe away from the booster water pump passes through the dust collector and extends to the interior of the dust collector, the end of the water pipe away from the booster water pump is fixedly connected with a drain pipe, the outer surface of the drain pipe is fixedly connected with a plurality of water mist nozzles, a fan support plate is fixedly installed on the inner circle of the dust collector, a negative pressure fan is fixedly installed on the bottom surface of the fan support plate, an exhaust port is opened on the outer surface of the dust collector, and a grid plate is fixedly connected to the inner wall of the exhaust port.

[0007] As a preferred technical solution of the present invention, an ultrasonic water level meter is fixedly installed on the inner top wall of the water tank, a ventilation pipe is fixedly connected to the upper surface of the water tank, and a controller is fixedly installed on the front of the water tank.

[0008] As a preferred technical solution of the present invention, the upper surface of the water storage tank is fixedly connected with a water injection pipe, the right end of the water injection pipe is fixedly connected with a water injection joint, and the outer surface of the water injection pipe is fixedly connected with a solenoid valve.

[0009] As a preferred technical solution of the present invention, the top end of the dust suction top pipe is fixedly connected to a first dust suction hood, and the left end of the dust suction pipe is fixedly connected to a second dust suction hood.

[0010] As a preferred technical solution of the present invention, the outer surface of the air guide cover is fixedly connected to two adjustment seats, the inner walls of the two adjustment seats are slidably connected to adjustment plates, and the side surfaces of the two adjustment plates close to each other are fixedly connected to the outer surface of the dust collection top pipe.

[0011] As a preferred technical solution of the present invention, the outer surfaces of the two adjustment seats are provided with strip holes, the side surfaces of the two adjustment plates away from each other are fixedly connected with fixing screws, and the fixing screws are located inside the strip holes, and the outer surfaces of the two fixing screws are threadedly connected with locking nuts.

[0012] As a preferred technical solution of the present invention, two mounting plates are fixedly mounted on the bottom surface of the water tank, and two mounting holes are provided on the bottom surfaces of the two mounting plates.

[0013] As a preferred technical solution of the present invention, a fixing plate is fixedly connected to the back of the water tank, the front of the fixing plate is fixedly connected to the outer surface of the booster water pump, the outer surface of the dust removal cylinder is fixedly connected to a fixing block, and the back of the fixing block is fixedly connected to the outer surface of the water pipe.

[0014] As a preferred technical solution of the present invention, a positioning block is fixedly connected to the inner ring of the dust removal cylinder, and the front surface of the positioning block is fixedly connected to the outer surface of the drain pipe.

[0015] As a preferred technical solution of the present invention, S1, first install the device in the upper space of the hydraulic support and make the device located below the top beam; S2, connect the water injection joint to the water pipe, and inject water into the water tank; S3, start the negative pressure fan and the booster water pump; S4, the operation of the negative pressure fan can extract the floating dust between the hydraulic supports and discharge it into the dust removal cylinder for treatment; S5, use the combination of negative pressure suction air volume and spray to achieve rapid and efficient mixing treatment of dust and spray.

[0016] The beneficial effects of the present invention are:

[0017] (1) The negative pressure suction dust removal method and device, by providing a water storage tank, can extract and spray during water mist dust removal, and at the same time utilize the work of the negative pressure fan inside the dust collection cylinder, and cooperate with the first dust collection hood and the second dust collection hood to extract the dust between the hydraulic supports and discharge it into the dust collection cylinder for suction dust removal.

[0018] (2) The negative pressure suction dust removal method and device, by setting up the operation of a booster water pump and cooperating with a water delivery component and a plurality of water mist nozzles, can extract and transport water liquid, and form the water liquid into water mist for spraying, so that the spray diffusion surface can be sealed against the air in the cross section. At the same time, by utilizing the operation of the negative pressure fan inside the dust removal cylinder, the negative pressure suction air volume and the spray can be combined together, which will realize the rapid and efficient mixing of dust and spray, and then achieve the effect of suction dust removal during coal mining, improve the effect of capturing floating dust between hydraulic supports, and solve the problem of poor spray diffusion range in the current comprehensive mining working face.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the front view of the present invention;

[0022] Figure 2 A sectional view of the front view of the present invention;

[0023] Figure 3 is a sectional view of a side view of the present invention;

[0024] Figure 4 It is a cross-sectional view of a bottom view of a water storage tank in the present invention;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the front view of the dust suction pipe in the present invention;

[0026] Figure 6 The figure is a flow chart of the dust removal method of the present invention.

[0027] 1. Water tank; 2. Dust removal cylinder; 3. Air guide cover; 4. Air guide port; 5. Fixed pipe; 6. Dust suction pipe; 7. Fan support plate; 8. Negative pressure fan; 9. Booster pump; 10. Water pipe; 11. Drain pipe; 12. Water mist nozzle; 13. Fixed plate; 14. Fixed block; 15. Positioning block; 16. Ultrasonic water level gauge; 17. Water injection pipe; 18. Solenoid valve; 19. Water injection joint; 20. Controller; 21. Exhaust port; 22. Grid plate; 23. Mounting hole; 24. Mounting plate; 25. Water suction pipe; 26. Adjustment seat; 27. Telescopic hose; 28. Dust suction top pipe; 29. ​​Second dust hood; 30. First dust hood; 31. Adjustment plate; 32. Strip hole; 33. Locking nut; 34. Fixing screw; 35. Ventilation pipe. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] See also Figure 1-6In the present embodiment: a negative pressure suction dust removal device comprises a water storage tank 1, a dust removal cylinder 2 is fixedly connected to the upper surface of the water storage tank 1, a guide cover 3 is fixedly connected to the outer surface of the dust removal cylinder 2, a guide port 4 is opened on the left side of the guide cover 3, a fixed pipe 5 is fixedly installed on the inner circle of the guide port 4, a dust suction pipe 6 is fixedly connected to the inner circle of the fixed pipe 5, a telescopic hose 27 is fixedly connected to the outer surface of the dust suction pipe 6, a dust suction top pipe 28 is fixedly connected to the top of the telescopic hose 27, a booster water pump 9 is fixedly installed on the back of the water storage tank 1, an input end of the booster water pump 9 is fixedly connected to a water pump 25, a bottom end of the water pump 25 passes through the water storage tank 1 and extends to the inside of the water storage tank 1, and a booster water pump 9 is fixedly installed on the back of the water storage tank 1. The output end is fixedly connected with a water pipe 10, and the end of the water pipe 10 away from the booster water pump 9 passes through the dust removal cylinder 2 and extends to the interior of the dust removal cylinder 2. The end of the water pipe 10 away from the booster water pump 9 is fixedly connected with a drain pipe 11, and the outer surface of the drain pipe 11 is fixedly connected with a plurality of water mist nozzles 12. The inner circle of the dust removal cylinder 2 is fixedly installed with a fan support plate 7, and the bottom surface of the fan support plate 7 is fixedly installed with a negative pressure fan 8. The outer surface of the dust removal cylinder 2 is provided with an exhaust port 21, and the inner wall of the exhaust port 21 is fixedly connected with a grid plate 22. The negative pressure fan 8 is a machine that utilizes the cooling principle of air convection and negative pressure ventilation, and any poor ventilation problem can be improved. The booster water pump 9 is a pump used to boost water pressure.

[0032] In this embodiment, an ultrasonic water level meter 16 is fixedly installed on the inner top wall of the water tank 1, a ventilation pipe 35 is fixedly connected to the upper surface of the water tank 1, a controller 20 is fixedly installed on the front of the water tank 1, a water injection pipe 17 is fixedly connected to the upper surface of the water tank 1, a water injection joint 19 is fixedly connected to the right end of the water injection pipe 17, and a solenoid valve 18 is fixedly connected to the outer surface of the water injection pipe 17. The solenoid valve 18 has a closed cavity with through holes at different positions, each of which leads to a different oil pipe. There is a valve in the middle of the cavity and two electromagnets on both sides. The valve body will be attracted to the side where the magnet coil is energized, and different oil discharge holes can be blocked or leaked by controlling the movement of the valve body. The oil inlet hole is normally open, and the hydraulic oil will enter different oil discharge pipes, and then the piston of the oil cylinder is pushed by the pressure of the oil, and the piston drives the piston rod, and the piston rod drives the mechanical device to move. In this way, the mechanical movement is controlled by controlling the current of the electromagnet, the height of the water inside the water tank 1 can be detected by the ultrasonic water level meter 16, the ventilation pipe 35 is used to ventilate and relieve the pressure inside the water tank 1, and the water injection pipe 17 and the water injection joint 19 can be used to inject water into the water tank 1.

[0033] The top end of the dust suction top pipe 28 is fixedly connected to a first dust suction hood 30, and the left end of the dust suction pipe 6 is fixedly connected to a second dust suction hood 29. The outer surface of the air guide hood 3 is fixedly connected to two adjustment seats 26, and the inner walls of the two adjustment seats 26 are slidably connected to adjustment plates 31. The side surfaces of the two adjustment plates 31 that are close to each other are fixedly connected to the outer surface of the dust suction top pipe 28. The outer surfaces of the two adjustment seats 26 are provided with strip holes 32, and the side surfaces of the two adjustment plates 31 that are away from each other are fixedly connected to fixing screws 34, and the fixing screws 34 are located inside the strip holes 32. The outer surfaces of the two fixing screws 34 are threadedly connected with locking nuts 33. Through the first dust suction hood 30 and the second dust suction hood 29, dust can be extracted more quickly. By using the cooperation of the adjusting seat 26, the adjusting plate 31, the fixing screws 34 and the locking nuts 33, the dust suction height of the dust suction top pipe 28 can be adjusted, thereby improving the flexibility during dust suction.

[0034] In this embodiment, two mounting plates 24 are fixedly installed on the bottom surface of the water tank 1, and two mounting holes 23 are provided on the bottom surfaces of the two mounting plates 24. A fixing plate 13 is fixedly connected to the back of the water tank 1, and the front of the fixing plate 13 is fixedly connected to the outer surface of the booster water pump 9. A fixing block 14 is fixedly connected to the outer surface of the dust removal cylinder 2, and the back of the fixing block 14 is fixedly connected to the outer surface of the water pipe 10. A positioning block 15 is fixedly connected to the inner circle of the dust removal cylinder 2, and the front of the positioning block 15 is fixedly connected to the outer surface of the drain pipe 11. The device can be flexibly installed and fixed through the mounting plates 24 and the mounting holes 23. The booster water pump 9 can be fixed by using the fixing plate 13. The water pipe 10 and the drain pipe 11 can be fixed respectively through the cooperation of the fixing block 14 and the positioning block 15, thereby improving the firmness between the two.

[0035] In this embodiment, S1, first install the device in the upper space of the hydraulic support and make the device located below the top beam; S2, connect the water injection joint 19 to the water pipe, and inject water into the water tank 1; S3, start the negative pressure fan 8 and the booster pump 9; S4, the operation of the negative pressure fan 8 can extract the floating dust between the hydraulic supports and discharge it into the dust removal cylinder 2 for treatment; S5, use the combination of negative pressure suction air volume and spray to achieve rapid and efficient mixing treatment of dust and spray.

[0036] The working principle and use process of the present invention are as follows: first, the device is installed in the upper space of the hydraulic support, and the device is located below the top beam, and the first dust hood 29 and the second dust hood 30 cover the area space, and then the water injection pipe 17 is used to inject water into the interior of the water storage tank 1, and then the negative pressure fan 8 and the booster water pump 9 are started. The operation of the negative pressure fan 8 can extract the external dust through the first dust hood 29 and the second dust hood 30, and will be extracted into the dust removal cylinder 2 through the dust suction pipe 6 and the guide cover 3, and the operation of the booster water pump 9 can extract and transport the water, and will make the water form water mist for spraying, which will make the spray diffusion surface form a seal with the air in the cross section, and then the movement of the spray will form a negative pressure behind it, and the air volume sucked by the negative pressure will be combined with the spray to achieve rapid and efficient mixing of dust and spray, and finally the dust-removed gas will be discharged toward the coal wall through the exhaust port 21.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A negative pressure suction dust removal device, comprising a water storage tank (1), characterized in that: The upper surface of the water storage tank (1) is fixedly connected to a dust removal cylinder (2), the outer surface of the dust removal cylinder (2) is fixedly connected to a guide cover (3), the left side of the guide cover (3) is provided with a guide port (4), the inner circle of the guide port (4) is fixedly installed with a fixed pipe (5), the inner circle of the fixed pipe (5) is fixedly connected to a dust suction pipe (6), the outer surface of the dust suction pipe (6) is fixedly connected to a telescopic hose (27), the top end of the telescopic hose (27) is fixedly connected to a dust suction top pipe (28), a booster water pump (9) is fixedly installed on the back of the water storage tank (1), the input end of the booster water pump (9) is fixedly connected to a water suction pipe (25), the bottom end of the water suction pipe (25) passes through the water storage tank (1) and extends to The water supply pipe (10) extends to the interior of the water storage tank (1); the output end of the booster water pump (9) is fixedly connected to a water supply pipe (10); the end of the water supply pipe (10) away from the booster water pump (9) passes through the dust removal cylinder (2) and extends to the interior of the dust removal cylinder (2); the end of the water supply pipe (10) away from the booster water pump (9) is fixedly connected to a drainage pipe (11); the outer surface of the drainage pipe (11) is fixedly connected to a plurality of water mist nozzles (12); the inner ring of the dust removal cylinder (2) is fixedly mounted with a fan support plate (7); the bottom surface of the fan support plate (7) is fixedly mounted with a negative pressure fan (8); the outer surface of the dust removal cylinder (2) is provided with an exhaust port (21); the inner wall of the exhaust port (21) is fixedly connected to a grid plate (22).

2. A negative pressure suction dust removal device according to claim 1, characterized in that: An ultrasonic water level meter (16) is fixedly mounted on the inner top wall of the water storage tank (1), a ventilation pipe (35) is fixedly connected to the upper surface of the water storage tank (1), and a controller (20) is fixedly mounted on the front surface of the water storage tank (1).

3. The negative pressure suction dust removal device according to claim 1, characterized in that: The upper surface of the water storage tank (1) is fixedly connected to a water injection pipe (17), the right end of the water injection pipe (17) is fixedly connected to a water injection joint (19), and the outer surface of the water injection pipe (17) is fixedly connected to a solenoid valve (18).

4. The negative pressure suction dust removal device according to claim 1, characterized in that: The top end of the dust suction top pipe (28) is fixedly connected to a first dust suction hood (30), and the left end of the dust suction pipe (6) is fixedly connected to a second dust suction hood (29).

5. The negative pressure suction dust removal device according to claim 1, characterized in that: The outer surface of the air guide cover (3) is fixedly connected to two adjustment seats (26), the inner walls of the two adjustment seats (26) are slidably connected to adjustment plates (31), and the side surfaces of the two adjustment plates (31) that are close to each other are fixedly connected to the outer surface of the dust suction top pipe (28).

6. A negative pressure suction dust removal device according to claim 5, characterized in that: The outer surfaces of the two adjustment seats (26) are each provided with a strip-shaped hole (32); the side surfaces of the two adjustment plates (31) that are away from each other are each fixedly connected with a fixing screw (34), and the fixing screw (34) is located inside the strip-shaped hole (32); and the outer surfaces of the two fixing screws (34) are each threadedly connected with a locking nut (33).

7. The negative pressure suction dust removal device according to claim 1, characterized in that: Two mounting plates (24) are fixedly mounted on the bottom surface of the water storage tank (1), and two mounting holes (23) are provided on the bottom surfaces of the two mounting plates (24).

8. The negative pressure suction dust removal device according to claim 1, characterized in that: The back of the water storage tank (1) is fixedly connected to a fixing plate (13), the front of the fixing plate (13) is fixedly connected to the outer surface of the booster water pump (9), the outer surface of the dust removal cylinder (2) is fixedly connected to a fixing block (14), and the back of the fixing block (14) is fixedly connected to the outer surface of the water delivery pipe (10).

9. The negative pressure suction dust removal device according to claim 1, characterized in that: The inner ring of the dust removal cylinder (2) is fixedly connected to a positioning block (15), and the front surface of the positioning block (15) is fixedly connected to the outer surface of the drainage pipe (11).

10. A negative pressure suction dust removal method according to claim 1, characterized in that: S1, first install the device in the upper space of the hydraulic support and make the device located below the top beam; S2, connect the water injection joint (19) to the water pipe and inject water into the interior of the water storage tank (1); S3, start the negative pressure fan (8) and the booster pump (9); S4, the operation of the negative pressure fan (8) can extract the floating dust between the hydraulic supports and discharge it into the dust removal cylinder (2) for treatment; S5, use the negative pressure suction air volume and spray together to achieve rapid and efficient mixing treatment of dust and spray.

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