Dust screen for coal mining

Abstract

The utility model relates to a coal mining dustproof net which comprises a flexible net, and the flexible net comprises a flexible plastic woven net and a cotton woven net attached to the flexible plastic woven net. The flexible net is provided with a water supply fixing frame mechanism used for supporting, fixing and soaking in water for wetting. The water supply fixing frame mechanism wets the flexible net to form a flowing water film, and the dustproof effect is improved. And a cleaning assembly for cleaning attached coal mine dust is arranged on the flexible net. According to the dust-proof net for coal mining, the arranged water supply fixing frame mechanism is matched with the cotton woven net and the cotton strips, it is guaranteed that water evenly permeates into the cotton woven net to form a water film to be attached to dust in air, and the attached dust is cleaned through the arranged cleaning assembly; and the water is discharged to the filtering and deslagging structure along with the water to be filtered, so that the water is recycled, and the dustproof effect is improved while resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a dust-proof net for coal mining. Background Art

[0002] In underground coal mine production, the excavation working face is one of the main sources of mine dust. Dust-proof nets are used on the excavation working face. Through practical application, the dust concentration on the working face is greatly reduced and the working environment is improved.

[0003] Installation of dust-proof nets: Generally, the dust-proof nets are installed 200-300 meters away from the working surface. In the tunnel, medium 50 steel pipes and anchor rods are used to overlap to form the main framework of the dust-proof net. A layer of anchor net is fixed on the windward side of the framework, and then a layer of flexible net (plastic window screen) is applied on the windward side of the anchor net. A purification water curtain is installed at a height of 0.5 meters from the top of the tunnel. The purification water curtain is equipped with 5-6 nozzles, and the entire section should be closed. The direction of the nozzle is 45° in the windward flow direction to spray the flexible net to form a fluid water film to absorb dust;

[0004] Based on the description of the above-mentioned prior art, when installing the dust-proof net, due to the use of direct spraying method, due to the different spacing from the nozzle, the uniformity is not high and it is impossible to ensure that a water film is formed on the entire net surface. At the same time, during the spraying process, most of the water will be directly lost with the flowing air, and the dust attached to the surface of the dust-proof net cannot be cleaned, affecting the dust reduction effect. At the same time, the recycling of water cannot be achieved. Therefore, the present application designs a coal mining dust-proof net that saves resources and improves the dust reduction effect to solve this prior art defect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a coal mine dust prevention net, which has the advantages of saving resources and improving dust reduction effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mining dust-proof net, comprising a flexible net, the flexible net comprising a flexible plastic woven net and a cotton woven net bonded to the flexible plastic woven net;

[0007] The flexible net is provided with a water supply fixing frame mechanism for supporting, fixing and soaking in water;

[0008] The water supply fixing frame mechanism makes the flexible net wet to form a fluid water film, thereby improving the dustproof effect;

[0009] The flexible net is provided with a cleaning component for cleaning attached coal mine dust;

[0010] The water supply fixed frame mechanism is provided with a filtering and slag discharge structure for filtering the cleaned coal mine dust and water and reusing the water.

[0011] As a preferred technical solution of the utility model, the water supply fixed frame mechanism includes a mounting frame fixed to the outside of the flexible net and a cotton strip fixed to the front surface of the cotton woven net;

[0012] Among them, a water storage seat is fixedly installed at the bottom of the mounting frame, a water pump is fixedly installed on the left side of the water storage seat, a water suction pipe is connected between the water suction port of the water pump and the water storage seat, a drainage pipe is connected to the drainage port of the water pump, the other end of the drainage pipe is connected to a straight pipe fixedly installed on the top of the mounting frame, the outside of the straight pipe is connected to a number of dripping heads in contact with the cotton sliver, and a water supply component for supplying water to the water storage seat is provided on the water storage seat.

[0013] As a preferred technical solution of the utility model, the water supply assembly includes a hose connected to the outside of the water storage seat, the outside of the hose is connected to a switch valve, and the other end of the hose is connected to a water storage bucket.

[0014] As a preferred technical solution of the utility model, the cleaning assembly includes a guide seat and an electric guide rail respectively mounted and fixed on the left and right sides of the front surface of the mounting frame;

[0015] Wherein, a cleaning brush which is slidably connected with the guide seat and contacts with the surface of the cotton woven net is fixedly installed at the guide rail slide seat of the electric guide rail.

[0016] As a preferred technical solution of the utility model, the filtering and slag discharge structure includes a through hole opened on the right side of the water storage seat and an isolation plate installed and fixed inside the water storage seat and passing through the through hole;

[0017] The interior of the isolation plate is embedded with an ultra-fine filter mesh, and the top of the isolation plate is fixedly provided with a water retaining bar located on the right side of the ultra-fine filter mesh and in the perforation.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] The coal mine dust prevention net ensures that water evenly penetrates into the cotton woven net to form a water film to attach to dust in the air through a water supply fixed frame mechanism and a cotton woven net and cotton strips. At the same time, the attached dust is cleaned through a cleaning component and discharged into the filtering and slag discharge structure along with the water for filtration, thereby achieving the reuse of water, saving resources and improving the dust prevention effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a partial cross-sectional view of the utility model;

[0022] Figure 3It is a cross-sectional view of the utility model;

[0023] Figure 4 It is a side perspective view of the utility model;

[0024] Figure 5 This is a flip stereogram of the utility model.

[0025] In the figure: 1. flexible net; 101. flexible plastic woven net; 102. cotton woven net; 2. cotton strips; 3. mounting frame; 4. water storage seat; 5. hose; 6. switch valve; 7. water storage barrel; 8. water pump; 9. water suction pipe; 10. drainage pipe; 11. straight pipe; 12. drip head; 13. electric guide rail; 14. guide seat; 15. cleaning brush; 16. perforation; 17. isolation plate; 18. filter screen; 19. water retaining strip. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 5 A coal mining dust-proof net in this embodiment includes a flexible net 1, and the flexible net 1 includes a flexible plastic woven net 101 and a cotton woven net 102 bonded to the flexible plastic woven net 101.

[0028] The flexible net 1 is provided with a water supply fixing frame mechanism for supporting, fixing and soaking in water.

[0029] The water supply fixing frame mechanism makes the flexible net 1 wet to form a fluid water film, thereby improving the dustproof effect.

[0030] It should be noted that the water supply fixing frame mechanism includes a mounting frame 3 fixed to the outside of the flexible net 1 and a cotton strip 2 fixed to the front surface of the cotton woven net 102 .

[0031] Among them, a water storage seat 4 is installed and fixed at the bottom of the mounting frame 3, a water pump 8 is installed and fixed on the left side of the water storage seat 4, a water suction pipe 9 is connected between the water suction port of the water pump 8 and the water storage seat 4, and a drainage pipe 10 is connected to the drainage port of the water pump 8. The other end of the drainage pipe 10 is connected to a straight pipe 11 installed and fixed on the top of the mounting frame 3. The outside of the straight pipe 11 is connected to a number of drip heads 12 in contact with the cotton strips 2. A water supply component for supplying water to the water storage seat 4 is provided on the water storage seat 4.

[0032] An opening is provided on the right side of the water storage seat 4, and a sealing cover is inserted into the opening to facilitate cleaning the inside of the water storage seat 4 through the opening.

[0033] The water supply assembly includes a hose 5 connected to the outside of the water storage seat 4 , the outside of the hose 5 is connected to a switch valve 6 , and the other end of the hose 5 is connected to a water storage barrel 7 .

[0034] A switch cover is provided on the top of the water storage bucket 7 for easy water replenishment and water storage, and a shoulder strap is provided on the rear surface of the water storage bucket 7 for easy carrying.

[0035] The elastic plastic woven net 101 and the cotton woven net 102 are of equal length and width, and the holes therebetween are interconnected. The length of the sliver 2 is equal to the width of the cotton woven net 102.

[0036] The flexible net 1 in this embodiment is provided with a cleaning component for cleaning the attached coal mine dust.

[0037] A cleaning brush 15 is fixedly mounted on the guide rail slide seat of the electric guide rail 13 and is slidably connected to the guide seat 14 and in contact with the surface of the cotton woven net 102 .

[0038] When the electric guide rail 13 drives the cleaning brush 15 to move from the upper right to the lower right, the cleaning brush 15 moves from the top to the bottom of the cotton woven net 102 , and the length of the cleaning brush 15 is equal to the width of the cotton woven net 102 .

[0039] The cleaning brush 15 has flexible plastic bristles on one side thereof that is in contact with the cotton woven net 102 .

[0040] It should be noted that the cleaning assembly includes a guide seat 14 and an electric guide rail 13 which are respectively mounted and fixed on the left and right sides of the front surface of the mounting frame 3 .

[0041] The water supply fixed frame mechanism in this embodiment is provided with a filtering and slag discharge structure for filtering the cleaned coal mine dust and water and reusing the water.

[0042] It should be noted that the filtering and slag discharge structure includes a through hole 16 opened on the right side of the water storage seat 4 and an isolation plate 17 installed and fixed inside the water storage seat 4 and passing through the through hole 16 .

[0043] An ultra-fine filter 18 is embedded and connected inside the isolation plate 17 , and a water retaining bar 19 is fixedly installed on the top of the isolation plate 17 and is located on the right side of the ultra-fine filter 18 and in the perforation 16 .

[0044] The width of the isolation plate 17 is equal to the inner width of the water storage seat 4 to seal the opening of the water storage seat 4. The width of the water retaining strip 19 is equal to the opening width of the perforation 16. The isolation plate 17 is tilted downward at an angle of thirty degrees from left to right to ensure that the filtered coal mine dust is discharged along the slope.

[0045] The ultra-fine filter 18 is divided into multiple layers that fit together, and from the upper right to the bottom are a polyester filter layer, a nanofiber filter layer, a PTFE filter layer and an activated carbon filter layer.

[0046] The water absorption of the cotton woven net 102 and the cotton strips 2 is not conducive to uniform water absorption and water penetration to form a flowing water film, thereby improving the wetting and dust reduction effect on dust and reducing the waste of water resources.

[0047] The working principle of the above embodiment is:

[0048] By installing and fixing the overall structure at a certain distance from the working surface, and opening the switch valve 6 to discharge the water stored in the water storage barrel 7 into the water storage seat 4 through the hose 5, the switch valve 6 is closed, and the water in the water storage seat 4 can be pumped out by starting the water pump 8 through the water pump pipe 9. At the same time, the water pump pipe 9, the water pump 8, the drain pipe 10, the straight pipe 11 and the drip head 12 are connected to each other, so that the pumped water drips into the cotton strip 2 in contact with the drip head 12 through the drip head 12, and penetrates into the cotton strip 2 connected to the cotton strip 2. The cotton woven net 102 is connected to form a flowing water film between the cotton woven net 102 and the flexible plastic woven net 101, thereby avoiding the traditional direct spraying method which easily causes the failure of forming a water film locally and directly causes the waste of water resources, thereby facilitating the attachment of dust generated during work. With the wettability of the water film and the dust-proof and shielding effect of the cotton woven net 102 and the flexible plastic woven net 101, the dust is attached to the surface of the cotton woven net 102, and most of the dust flows into the water storage seat 4 along with the flowing water film.

[0049] In addition, by the electric guide rail 13 being set, the cleaning brush 15 can be driven to move to comprehensively clean the dust on the surface of the cotton woven net 102 and simultaneously drop it into the water storage seat 4, thereby ensuring the cleanliness of the surface of the cotton woven net 102 and improving the continuous dust removal and dust prevention effect. Then, when water and dust fall into the water storage seat 4, the ultra-fine filter 18 on the isolation plate 17 isolates and filters the dust in the water, so that the water flows into the water storage seat 4 for storage and reuse. The filtered dust is discharged to the outside of the perforation 16 due to the setting of the inclined surface of the isolation plate 17. The setting of the water retaining bar 19 plays a role in blocking water to prevent water and dust from being discharged together to the outside of the perforation 16, thereby realizing the recycling of water resources.

[0050] The electrical components mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the text.

Claims

1. A dust-proof net for coal mining, comprising a flexible net (1), characterized in that: The flexible net (1) comprises a flexible plastic woven net (101) and a cotton woven net (102) attached to the flexible plastic woven net (101); The flexible net (1) is provided with a water supply fixing frame mechanism for supporting, fixing and soaking in water; The water supply fixing frame mechanism makes the flexible net (1) wet to form a fluid water film; The flexible net (1) is provided with a cleaning component; The water supply fixed frame mechanism is provided with a filtering and slag discharge structure.

2. A dust-proof net for coal mining according to claim 1, characterized in that: The water supply fixing frame mechanism comprises a mounting frame (3) fixedly mounted on the outside of the flexible net (1) and a cotton strip (2) fixedly attached to the front surface of the cotton woven net (102); A water storage seat (4) is fixedly mounted on the bottom of the mounting frame (3), a water pump (8) is fixedly mounted on the water storage seat (4), a water suction pipe (9) is connected between the water suction port of the water pump (8) and the water storage seat (4), a water discharge pipe (10) is connected to the water discharge port of the water pump (8), the other end of the water discharge pipe (10) is connected to a straight pipe (11) fixedly mounted on the top of the mounting frame (3), the outside of the straight pipe (11) is connected to a plurality of drip heads (12) in contact with the cotton strips (2), and a water supply component for supplying water to the water storage seat (4) is provided on the water storage seat (4).

3. A coal mining dust-proof net according to claim 2, characterized in that: The water supply assembly comprises a hose (5) connected to the outside of the water storage seat (4); the outside of the hose (5) is connected to a switch valve (6); and the other end of the hose (5) is connected to a water storage bucket (7).

4. A dust-proof net for coal mining according to claim 2, characterized in that: The cleaning assembly comprises a guide seat (14) and an electric guide rail (13) respectively mounted and fixed on both sides of the front surface of the mounting frame (3); Wherein, a cleaning brush (15) is fixedly mounted on the guide rail slide seat of the electric guide rail (13), which is slidably connected to the guide seat (14) and in contact with the surface of the cotton woven net (102).

5. A coal mining dust-proof net according to claim 2, characterized in that: The filtering and slag discharge structure comprises a through hole (16) opened on one side of the water storage seat (4) and an isolation plate (17) installed and fixed inside the water storage seat (4) and passing through the through hole (16); The interior of the isolation plate (17) is embedded with a filter screen (18) and the top of the isolation plate (17) is located on a water retaining strip (19) in the perforation (16).

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