Fully-mechanized face air curtain dust isolation device

Abstract

The invention relates to a fully-mechanized face air curtain dust isolation device, and belongs to the technical field of coal mine dust prevention. The device comprises a movable rack rail unit and a coal mining machine body, a driving unit is installed at the input end of the movable rack rail unit, two scraper-trough conveyer breast boards are fixedly connected to the upper surface of the movable rack rail unit, the top ends of the two scraper-trough conveyer breast boards are jointly and fixedly connected with an air curtain box, and a three-way air pipe is arranged in the air curtain box. Through the arrangement of the air curtain generation box, the air compressor, the high-pressure air storage tank, the electromagnetic air valve, the three-way air pipe, the air curtain box, the air curtain branch air pipes and the air curtain high-pressure air spraying heads, external air can be extracted, compressed and stored, high-pressure compressed air is formed and evenly sprayed out downwards through the air curtain high-pressure air spraying heads to form air flow, and the air flow is uniform. And then a continuous air curtain is formed, isolation and blocking of coal mining dust are achieved, diffusion of the coal mining dust is effectively avoided, the dust falling effect in a coal mine is improved, and safe work of workers is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust prevention and relates to an air curtain dust isolation device for a fully mechanized mining face. Background Art

[0002] During the comprehensive coal mining process, the coal mining machine will generate a large amount of dust when cutting coal. This dust is one of the main dust sources of the comprehensive mining working face. The dust generation intensity is high and the diffusion range is wide. This dust not only harms the health of miners, but also may lead to reduced visibility in the mine, increase the risk of accidents, affect the normal operation of the coal mining machine, and seriously affect the working environment and the health of miners. In order to solve this problem, an external controlled dust removal device is usually arranged on the coal mining machine.

[0003] However, the dust removal effects of the current dust removal devices are not ideal and cannot effectively reduce the dust concentration. Therefore, it is necessary to design a new type of air curtain dust isolation device for comprehensive mining faces to solve the problems in the prior art. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an air curtain dust isolation device for a fully mechanized mining face, which solves the problem that the dust removal effect of the current coal mine dust removal device is not ideal and the dust concentration cannot be effectively reduced.

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

[0006] The air curtain dust isolation device for a fully mechanized mining face comprises a mobile rack unit and a coal mining machine body, wherein the input end of the mobile rack unit is provided with a driving unit, the upper surface of the mobile rack unit is fixedly connected with two chute fences, the top ends of the two chute fences are commonly fixedly connected with an air curtain box, a three-way air pipe is arranged inside the air curtain box, the right side of the three-way air pipe is fixedly connected with a group of equally spaced air curtain branch air pipes, the bottom surface of each of the air curtain branch air pipes is fixedly connected with a group of air curtain high-pressure jet heads, and the bottom end of each of the air curtain high-pressure jet heads is penetrated by an air curtain. The curtain box extends to the bottom of the wind curtain box, the upper surface of the mobile rack unit is fixedly connected to a purification box, the upper surface of the purification box is provided with a group of exhaust ports, the inner wall of the purification box is fixedly connected to a filter air cylinder, the outer surface of the filter air cylinder is fixedly inlaid with three groups of annularly arranged dust filter cloths, the output end of the filter air cylinder is fixedly connected to a filter frame, the interior of the filter frame is provided with a filter adsorbent, the left side of the tumbler fence is fixedly connected to an air curtain generating box, the interior of the air curtain generating box is provided with an air compressor and a high-pressure gas storage tank, the air compressor The output end of is fixedly connected with the input end of the high-pressure gas storage tank, the output end of the high-pressure gas storage tank is fixedly connected with a connecting air pipe, the output end of the connecting air pipe passes through the air curtain generating box and is fixedly connected with an electromagnetic air valve, the output end of the electromagnetic air valve is fixedly connected with the input end of the three-way air pipe, the bottom surface of the air curtain generating box is fixedly connected with an exhaust fan, the output end of the exhaust fan passes through the air curtain generating box and is fixedly connected with the input end of the air compressor, the input end of the exhaust fan is fixedly connected with a drying cylinder, the interior of the drying cylinder is provided with a drying filler, the drying cylinder The bottom end is fixedly connected with an exhaust pipe, the input end of the exhaust pipe passes through the purification box and is fixedly connected with the left end of the filter frame, the left side of the air curtain generating box is fixedly connected with an air curtain controller, the outer surface of the coal mining machine body is installed with a displacement monitoring sensor and a dust concentration monitoring sensor, the displacement monitoring sensor is electrically connected to the air curtain controller through a wire, the dust concentration monitoring sensor is electrically connected to the air curtain controller through a wire, and the air curtain controller is electrically connected to the driving unit, the exhaust fan, the air compressor, the high-pressure gas storage tank and the electromagnetic gas valve through a wire.

[0007] As a preferred technical solution of the present invention, the two chute guardrails are fixedly connected to each other on one side thereof close to each other by a connecting plate, and a group of air curtain air openings are provided on the upper surface of the connecting plate.

[0008] As a preferred technical solution of the present invention, an air suction groove is provided on the upper surface of the purification box, and the air suction groove is located in the middle of the purification box.

[0009] As a preferred technical solution of the present invention, a sealed door is hinged on the front of the air curtain generating box via two hinges, and an opening and closing handle is fixedly connected to the front of the sealed door.

[0010] As a preferred technical solution of the present invention, an observation frame is fixedly embedded on the left side surface of the air curtain generating box, and the observation frame is located above the air curtain controller.

[0011] As a preferred technical solution of the present invention, an operation sign is fixedly connected to the back of the air curtain generating box, and the operation sign is located in the middle of the air curtain generating box.

[0012] As a preferred technical solution of the present invention, a protective shell is fixedly connected to the outer surface of the air curtain controller, and the right side of the protective shell is fixedly connected to the left side of the air curtain generating box.

[0013] As a preferred technical solution of the present invention, the right ends of a group of the wind curtain branch air ducts are commonly fixedly connected to a support rod, and the front and rear ends of the support rod are fixedly connected to the inner wall of the wind curtain box.

[0014] As a preferred technical solution of the present invention, a reflective sticker is fixedly connected to the front side of each of the sliding railings.

[0015] As a preferred technical solution of the present invention, a group of sealed doors are installed on the bottom surface of the purification box, and the number of the sealed doors in a group is at least three.

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

[0017] (1) The air curtain dust isolation device for the fully mechanized mining face can extract, compress and store external air through the air curtain generating box, air compressor, high-pressure air storage tank, electromagnetic air valve, three-way air pipe, air curtain box, air curtain branch air pipe and air curtain high-pressure nozzle, so as to form high-pressure compressed air, which is evenly sprayed downward through the air curtain high-pressure nozzle to form an air flow, thereby forming a continuous air curtain wind curtain, which can isolate and block the dust generated by the coal cutting machine, effectively avoid the spread of dust generated by the coal cutting machine, increase the dust reduction effect of the fully mechanized mining face, and facilitate the safe work of the staff.

[0018] (2) The air curtain dust isolation device for the comprehensive mining face can absorb, filter and purify the dust particles inside the air curtain by arranging a purification box, an air suction groove, an air outlet, a filter air cylinder, a dust filter cloth, a filter frame, a filter adsorbent, an air exhaust pipe, a drying cylinder and an exhaust fan, thereby reducing the dust concentration in the air curtain, and extracting the dust through the exhaust fan and injecting it into the air compressor to facilitate the recycling of the purified gas.

[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 schematic diagram of the overall three-dimensional structure of the air curtain dust isolation device for a fully mechanized mining face according to the present invention;

[0022] Figure 2 It is a rear view of the air curtain generating box of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal dissected structure of the air curtain box of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal dissected structure of the air curtain generating box of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal dissected structure of the drying cylinder of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal dissection structure of the purification box of the present invention;

[0027] Figure 7 This is a circuit control system diagram of the air curtain dust isolation device for the comprehensive mining face of the present invention.

[0028] Reference numerals: 1, mobile rack unit; 2, driving unit; 3, chute guardrail; 4, reflective sticker; 5, connecting plate; 6, air curtain box; 7, air curtain air outlet; 8, air curtain high-pressure jet head; 9, three-way air pipe; 10, solenoid valve; 11, connecting air pipe; 12, air curtain generating box; 13, sealing door; 14, opening and closing handle; 15, exhaust fan; 16, drying cylinder; 17, exhaust pipe; 18, purification box; 19, exhaust outlet; 20, suction Groove; 21. Protective shell; 22. Air curtain controller; 23. Operation sign; 24. Observation frame; 25. Air curtain branch air pipe; 26. Support rod; 27. High-pressure gas storage tank; 28. Air compressor; 29. ​​Dry filler; 30. Filter frame; 31. Filter adsorbent; 32. Dust filter cloth; 33. Filter air cylinder; 34. Sealed cabin door; 35. Coal mining machine body; 36. Displacement monitoring sensor; 37. Dust concentration monitoring sensor. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] See also Figure 1-7In this embodiment: the air curtain dust isolation device for the fully mechanized mining face comprises a mobile rack unit 1 and a coal mining machine body 35, the input end of the mobile rack unit 1 is equipped with a driving unit 2, the upper surface of the mobile rack unit 1 is fixedly connected to two chute fences 3, the tops of the two chute fences 3 are commonly fixedly connected to an air curtain box 6, a three-way air pipe 9 is arranged inside the air curtain box 6, the right side of the three-way air pipe 9 is fixedly connected to a group of equally spaced air curtain branch air pipes 25, the bottom surface of each air curtain branch air pipe 25 is fixedly connected to a group of air curtain high-pressure jet heads 8, the bottom end of each air curtain high-pressure jet head 8 penetrates the air curtain box 6 and extends to Below the air curtain box 6, the upper surface of the mobile rack unit 1 is fixedly connected with a purification box 18, and a group of air exhaust ports 19 are opened on the upper surface of the purification box 18. The inner wall of the purification box 18 is fixedly connected with a filter air cylinder 33, and the outer surface of the filter air cylinder 33 is fixedly inlaid with three groups of annularly arranged dust filter mesh cloths 32. The output end of the filter air cylinder 33 is fixedly connected with a filter frame 30, and the filter frame 30 is provided with a filter adsorbent 31. The left side of the chute fence 3 is fixedly connected with an air curtain generating box 12, and the air curtain generating box 12 is provided with an air compressor 28 and a high-pressure gas storage tank 27. The output end of the air compressor 28 is connected to the high-pressure gas storage tank 27. The input end of the air storage tank 27 is fixedly connected, and the output end of the high-pressure air storage tank 27 is fixedly connected to the connecting air pipe 11. The output end of the connecting air pipe 11 passes through the air curtain generating box 12 and is fixedly connected to the electromagnetic air valve 10. The output end of the electromagnetic air valve 10 is fixedly connected to the input end of the three-way air pipe 9. The bottom surface of the air curtain generating box 12 is fixedly connected to the exhaust fan 15. The output end of the exhaust fan 15 passes through the air curtain generating box 12 and is fixedly connected to the input end of the air compressor 28. The input end of the exhaust fan 15 is fixedly connected to the drying cylinder 16. The interior of the drying cylinder 16 is provided with a drying filler 29. The bottom end of the drying cylinder 16 is fixedly connected to The exhaust pipe 17, the input end of the exhaust pipe 17 passes through the purification box 18 and is fixedly connected to the left end of the filter frame 30, the left side of the air curtain generating box 12 is fixedly connected to the air curtain controller 22, the outer surface of the coal mining machine body 35 is installed with a displacement monitoring sensor 36 and a dust concentration monitoring sensor 37, the displacement monitoring sensor 36 is electrically connected to the air curtain controller 22 through a wire, the dust concentration monitoring sensor 37 is electrically connected to the air curtain controller 22 through a wire, and the air curtain controller 22 is electrically connected to the driving unit 2, the exhaust fan 15, the air compressor 28, the high-pressure gas storage tank 27 and the electromagnetic gas valve 10 through a wire.

[0033] In the present embodiment, a connecting plate 5 is fixedly connected to one side of the two tumbler guardrails 3 that are close to each other. A group of wind curtain air inlets 7 are provided on the upper surface of the connecting plate 5, which can connect and fix the tumbler guardrails 3 to facilitate the stable use of the wind curtain device. An air suction groove 20 is provided on the upper surface of the purification box 18. The air suction groove 20 is located in the middle of the purification box 18, which can facilitate the suction operation of the wind curtain airflow by the purification box 18. The front of the air curtain generating box 12 is hinged with a sealing door 13 through two hinges. The front of the sealing door 13 is fixedly connected with an opening and closing handle 14, which can conveniently open the sealing door 13 to facilitate the maintenance operation of the internal equipment of the air curtain generating box 12.

[0034] An observation frame 24 is fixedly embedded on the left side of the air curtain generating box 12. The observation frame 24 is located above the air curtain controller 22, and can observe the situation inside the air curtain generating box 12, thereby increasing the observation function of the air curtain generating box 12. An operation sign 23 is fixedly connected to the back of the air curtain generating box 12. The operation sign 23 is located in the middle of the air curtain generating box 12, and can explain the operation method of the device, so as to facilitate the staff to operate the dust reduction device. A protective shell 21 is fixedly connected to the outer surface of the air curtain controller 22, and the right side of the protective shell 21 is fixedly connected to the left side of the air curtain generating box 12, so as to provide external protection for the air curtain controller 22, thereby facilitating the safe use of the air curtain controller 22.

[0035] The right ends of a group of wind curtain branch air ducts 25 are fixedly connected to a support rod 26, and the front and rear ends of the support rod 26 are fixedly connected to the inner wall of the wind curtain box 6, which can increase the stability of the wind curtain branch air ducts 25 and facilitate the stable blowing of the wind curtain high-pressure nozzle 8. The front of each chute fence 3 is fixedly connected with a reflective label 4, which can increase the reflective warning effect of this device and facilitate the safe use of this device. A group of sealed doors 34 are installed on the bottom surface of the purification box 18. The number of sealed doors 34 in a group is at least three, which can facilitate the discharge and treatment of collected dust.

[0036] The working principle and use process of the present invention are as follows: when in use, firstly, the chute guardrail 3, the air curtain box 6, the air curtain generating device and the gas purification device are installed on the mobile rack rail unit 1, and the dust concentration monitoring sensor 37 is used to detect the dust concentration of the comprehensive mining working face, and the detection data is transmitted to the air curtain controller 22, and the air curtain controller 22 controls the air compressor 28 to extract and compress the external air, and uses the high-pressure gas storage tank 27 to store it to form high-pressure compressed air, and then the solenoid valve 10 is opened. The high-pressure gas flows through the three-way air pipe 9 and the air curtain branch air pipe 25, and finally passes through the air curtain high-pressure nozzle 8 to be uniformly sprayed downward to form an airflow, thereby forming a continuous air curtain wind curtain, so as to isolate and block the dust generated by the coal mining machine when cutting coal, avoid the diffusion of the dust generated by the coal mining machine when cutting coal, and realize comprehensive mining. To control dust on the working face, the exhaust fan 15 is operated at the same time, so that the purification box 18 generates suction force, and the dust particles in the air curtain airflow enter the purification box 18 through the exhaust port 19, and the dust particles are filtered by the filter air cylinder 33 and the dust filter cloth 32. The clean air enters the filter frame 30 and the filter adsorbent 31 for secondary filtration, and is dried by the drying cylinder 16 and the drying filler 29, and then is injected into the air compressor 28 again through the exhaust fan 15 to realize the recycling of purified gas, and the displacement monitoring sensor 36 is used to detect the displacement of the coal mining machine body 35, and the monitoring data is transmitted to the air curtain controller 22. The air curtain controller 22 controls the operation of the driving unit 2, and drives this device to follow the coal mining machine to perform mobile dust reduction by moving the rack unit 1.

[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. Air curtain dust isolation device for fully mechanized mining face, Features: The invention comprises a mobile rack unit (1) and a coal mining machine body (35), characterized in that: a driving unit (2) is installed at the input end of the mobile rack unit (1); two chute fences (3) are fixedly connected to the upper surface of the mobile rack unit (1); the tops of the two chute fences (3) are fixedly connected to a wind curtain box (6); a three-way air pipe (9) is arranged inside the wind curtain box (6); the right side of the three-way air pipe (9) is fixedly connected to a group of wind curtain branch air pipes (25) arranged at equal distances; the bottom surface of each wind curtain branch air pipe (25) is fixedly connected to a group of wind curtain high-pressure jet heads (8); the bottom end of each wind curtain high-pressure jet head (8) passes through the wind curtain box (6) and extends to the bottom of the wind curtain box (6); The upper surface of the rack rail unit (1) is fixedly connected to a purification box (18), the upper surface of the purification box (18) is provided with a group of air exhaust ports (19), the inner wall of the purification box (18) is fixedly connected to a filter air cylinder (33), the outer surface of the filter air cylinder (33) is fixedly inlaid with three groups of annularly arranged dust filter cloths (32), the output end of the filter air cylinder (33) is fixedly connected to a filter frame (30), the interior of the filter frame (30) is provided with a filter adsorbent (31), the left side of the trolley guardrail (3) is fixedly connected to an air curtain generating box (12), the interior of the air curtain generating box (12) is provided with an air compressor (28) and a high-pressure gas storage tank (27), the output end of the air compressor (28) is connected to the high-pressure gas storage tank (27) ), the output end of the high-pressure gas storage tank (27) is fixedly connected to a connecting air pipe (11), the output end of the connecting air pipe (11) passes through the air curtain generating box (12) and is fixedly connected to an electromagnetic valve (10), the output end of the electromagnetic valve (10) is fixedly connected to the input end of the three-way air pipe (9), the bottom surface of the air curtain generating box (12) is fixedly connected to an exhaust fan (15), the output end of the exhaust fan (15) passes through the air curtain generating box (12) and is fixedly connected to the input end of the air compressor (28), the input end of the exhaust fan (15) is fixedly connected to a drying cylinder (16), the interior of the drying cylinder (16) is provided with a drying filler (29), and the bottom end of the drying cylinder (16) is fixedly connected to an exhaust fan (15). Tube (17), the input end of the exhaust pipe (17) passes through the purification box (18) and is fixedly connected to the left end of the filter frame (30), the left side of the air curtain generating box (12) is fixedly connected to the air curtain controller (22), the outer surface of the coal mining machine body (35) is installed with a displacement monitoring sensor (36) and a dust concentration monitoring sensor (37), the displacement monitoring sensor (36) is electrically connected to the air curtain controller (22) through a wire, the dust concentration monitoring sensor (37) is electrically connected to the air curtain controller (22) through a wire, and the air curtain controller (22) is electrically connected to the driving unit (2), the exhaust fan (15), the air compressor (28), the high-pressure gas storage tank (27) and the electromagnetic gas valve (10) through a wire.

2. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: A connecting plate (5) is fixedly connected to the mutually adjacent side surfaces of the two chute guardrails (3), and a group of air curtain air ports (7) are provided on the upper surface of the connecting plate (5).

3. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: An air suction groove (20) is provided on the upper surface of the purification box (18), and the air suction groove (20) is located in the middle of the purification box (18).

4. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: The front of the air curtain generating box (12) is hinged with a sealing door (13) via two hinges, and the front of the sealing door (13) is fixedly connected with an opening and closing handle (14).

5. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: An observation frame (24) is fixedly embedded on the left side surface of the air curtain generating box (12), and the observation frame (24) is located above the air curtain controller (22).

6. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: An operation sign (23) is fixedly connected to the back of the air curtain generating box (12), and the operation sign (23) is located in the middle of the air curtain generating box (12).

7. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: The outer surface of the air curtain controller (22) is fixedly connected to a protective shell (21), and the right side surface of the protective shell (21) is fixedly connected to the left side surface of the air curtain generating box (12).

8. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: The right ends of a group of wind curtain branch air pipes (25) are fixedly connected to a support rod (26), and the front and rear ends of the support rod (26) are fixedly connected to the inner wall of the wind curtain box (6).

9. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: A reflective label (4) is fixedly connected to the front side of each trolley railing (3).

10. The air curtain dust isolation device for fully mechanized mining face according to claim 1, Features: A group of sealed doors (34) is installed on the bottom surface of the purification box (18), and the number of the sealed doors (34) in the group is at least three.

Images