A coal mine dust removal system

Abstract

The present invention discloses a dust removal system for coal mine exploitation, which includes a water curtain door, a filtering component and a suction component. The water curtain door is arranged at the entrance of the coal mine. The inlet of the filtering component is connected to the air outlet of the suction component, and the exhaust outlet of the filtering component is arranged at the water curtain door. The present invention belongs to the technical field of coal mines, specifically referring to a dust removal system for coal mine exploitation. The dust in the coal mine is cleaned and filtered through the filtering component, and the water curtain door can cooperate with the filtering component to adjust the filtering intensity.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mines, and specifically refers to a dust removal system for coal mine mining. Background Art

[0002] A coal mine is an area where humans mine coal resources in coal-rich mining areas. Generally, it is divided into underground coal mines and surface coal mines. When the coal seam is far from the surface, generally, underground roadways are dug to extract coal, which is an underground coal mine. When the coal seam is very close to the surface, generally, the surface soil layer is directly stripped to excavate coal, which is a surface coal mine. Most coal mines in China are underground coal mines. The scope of a coal mine includes a large area above and below the ground and related facilities. A coal mine is a reasonable space dug by humans when excavating a coal-rich geological layer, usually including roadways, shafts, and working faces, etc. During the existing coal mine mining process, it is necessary to perform dust removal treatment on the working environment. Among them, when the full-face roadheader is working, due to the complex geological conditions in the mine tunnel, a large amount of dust will be generated. Although there is currently advanced foam dust removal technology to reduce the dust content, due to the complex working environment, using a fan and a water curtain can not only filter the dust in the air but also reduce the temperature in the mine tunnel and enhance the ventilation frequency, which is still an essential dust removal method. However, the traditional fan and water curtain dust removal cannot flexibly adjust the dust removal intensity according to the actual working conditions. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dust removal system for coal mine mining, which realizes the cleaning and filtering of dust in the coal mine through a filtering component, and the water curtain door can cooperate with the filtering component to adjust the filtering intensity.

[0004] The technical solution adopted by the present invention is as follows: The dust removal system for coal mine mining provided by the present invention includes a water curtain door, a filtering component, and a suction component. The water curtain door is arranged at the coal mine entrance. The inlet of the filtering component is connected to the air outlet hole of the suction component, and the exhaust port of the filtering component is arranged at the water curtain door. The suction component extracts the dust-containing air near the bit of the full-face roadheader. The water curtain door includes a support frame, a pressing component, and a water delivery component. A water delivery cavity is arranged inside the support frame. The upper end of the pressing component is arranged inside the upper wall of the water delivery cavity, the lower end of the pressing component is arranged in the water delivery cavity, the water delivery component is arranged inside the support frame, and the lower end of the pressing component is arranged at the upper end of the support frame.

[0005] Wherein, the downward pressure assembly includes a waterproof hydraulic rod, a driving plate and a connecting plate, the fixed end of the waterproof hydraulic rod is arranged in the upper wall of the water delivery cavity, the driving plate and the connecting plate are arranged in the water delivery cavity, the connecting plate is connected to the movable end of the waterproof hydraulic rod, the driving plate is connected to the connecting plate, a water-passing cavity 1 is penetrated in the driving plate, the water-passing cavity 1 is provided with a plurality of groups, and the plurality of groups of water-passing cavities 1 are evenly arranged in the driving plate at equal intervals, a blocking rod is provided on the bottom wall of the driving plate, the blocking rod is provided with a plurality of groups, and the plurality of groups of blocking rods are evenly arranged on the bottom wall of the driving plate at equal intervals, and the blocking rod and the water-passing cavity 1 are staggered; the waterproof hydraulic rod works to push the connecting plate to move up and down, and the connecting plate drives the driving plate to move up and down.

[0006] Among them, the water conveying member is provided with a second water passage cavity, the second water passage cavity runs through the water conveying member, the second water passage cavity is provided with a plurality of groups, and the plurality of groups of the second water passage cavities are evenly arranged on the water conveying member at equal intervals, the second water passage cavity is arranged corresponding to the position of the blocking rod and the first water passage cavity, when the driving plate moves down to the upper wall of the water conveying member, the first water passage cavity is connected with the second water passage cavity, and the blocking member is inserted into the corresponding second water passage cavity to realize partial blocking of the second water passage cavity and adjust the intensity of the water flow.

[0007] Preferably, the filter assembly includes a filter barrel, a pull-out filter element and a bottom plate, the filter barrel is arranged on the bottom plate, the bottom plate supports and fixes the filter barrel, the pull-out filter element is movably arranged in the filter barrel, the pull-out filter element is provided with several groups, namely pull-out filter element one, pull-out filter element two, pull-out filter element three and pull-out filter element four, the pull-out filter element one, pull-out filter element two, pull-out filter element three and pull-out filter element four are arranged on the filter barrel in sequence to filter the extracted air.

[0008] As a priority of the present invention, the front wall of the filter barrel is provided with an air inlet hole, the rear wall of the filter barrel is provided with an exhaust pipe, and the exhaust pipe is arranged at the water curtain door.

[0009] Among them, a pressure bladder-shaped member is provided on the upper inner wall of the filter barrel. The pressure bladder-shaped member is arranged between the first pull-out filter member and the front wall of the filter barrel. A support member is provided between the pressure bladder-shaped members. The pressure bladder-shaped member can deform under pressure. A first contact member is provided on the support member, and a second contact member is provided on the upper inner wall of the filter barrel. The first contact member and the second contact member are arranged opposite to each other. The first contact member and the second contact member are made of conductive materials. Initially, the pressure inside the pressure bladder-shaped member is the same as the pressure of the filter barrel when it is not working. After the filter barrel starts working, if the filter holes on the first pull-out filter member are blocked by dust due to long filtering time, with the input of gas from the suction assembly, the pressure between the first pull-out filter member and the front wall of the filter barrel increases. The pressure bladder-shaped member moves towards the upper inner wall of the filter barrel under pressure, and the first contact member and the second contact member approach and contact each other to achieve an alarm. At the same time, the waterproof hydraulic rod is controlled to move upward to expose more of the second water passage cavity, increasing the water flow.

[0010] Further, a pressure sensor is provided on the bottom plate. The pressure sensor is arranged at the lower end of the first pull-out filter member. A controller is provided inside the bottom plate. The controller is connected to the pressure sensor, the first contact member, the second contact member, and the waterproof hydraulic rod.

[0011] Among them, the suction assembly includes an air extraction pump. An air outlet pipe and an air suction pipe are provided on the air extraction pump. The air outlet pipe is connected to the air inlet hole on the front wall of the filter barrel. The suction assembly extracts the dusty air near the bit of the fully mechanized heading machine.

[0012] Further, a water inlet hole is provided on the side wall of the support frame. The water inlet hole is connected to the water delivery cavity in a through manner. An external device is connected to the water inlet hole, and water is delivered into the water delivery cavity through the water inlet hole.

[0013] Preferably, moving wheels are provided on the bottom plate. The moving wheels can be fixed and moved.

[0014] The beneficial effects achieved by the present invention with the above structure are as follows:

[0015] The dust in the coal mine is cleaned and filtered through the filter assembly. The water curtain door can cooperate with the filter assembly to adjust the filtration intensity, solving the problem that the traditional fan and water curtain dust removal cannot flexibly adjust the dust removal intensity according to the actual working conditions; the pressure inside the pressure bladder-shaped member is the same as the pressure of the filter barrel when it is not working. After the filter barrel starts working, if the filter holes on the first pull-out filter member are blocked by dust due to long filtering time, with the input of gas from the suction assembly, the pressure between the first pull-out filter member and the front wall of the filter barrel increases. The pressure bladder-shaped member moves towards the upper inner wall of the filter barrel under pressure, and the first contact member and the second contact member approach and contact each other to achieve an alarm. At the same time, the waterproof hydraulic rod is controlled to move upward to expose more of the second water passage cavity, increasing the water flow and realizing an increase in the filtration intensity. Description of the Drawings

[0016] Figure 1 Structural schematic diagram of the dust removal system for coal mine mining provided by the present invention;

[0017] Figure 2 For Figure 1 Partial enlarged view of location A;

[0018] Figure 3 Structural schematic diagram of the water curtain door of the dust removal system for coal mine mining provided by the present invention;

[0019] Figure 4 For Figure 3 Partial enlarged view of location B;

[0020] Figure 5 Structural schematic diagram of the water curtain door of the dust removal system for coal mine mining provided by the present invention for reducing water flow;

[0021] Figure 6 For Figure 5 Partial enlarged view of location C;

[0022] Figure 7 Top view of the filter assembly of the dust removal system for coal mine mining provided by the present invention.

[0023] Among them, 1. water curtain door, 2. filter assembly, 3. suction assembly, 4. support frame, 5. pressing-down assembly, 6. water delivery member, 7. water delivery cavity, 8. waterproof hydraulic rod, 9. driving plate, 10. connecting plate, 11. first water passing cavity, 12. blocking rod, 13. second water passing cavity, 14. filter barrel, 15. pull-out filter element, 16. bottom plate, 17. air inlet hole, 18. exhaust pipe, 19. pressure bladder-shaped member, 20. support member, 21. first contact member, 22. second contact member, 23. pressure sensor, 24. controller, 25. air extraction pump, 26. air outlet pipe, 27. air extraction pipe, 28. water inlet hole, 29. moving wheel, 30. first pull-out filter element, 31. second pull-out filter element, 32. third pull-out filter element, 33. fourth pull-out filter element.

[0024] The attached drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0027] As Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the dust removal system for coal mine mining provided by the present invention includes a water curtain door 1, a filtering component 2 and a suction component 3. The water curtain door 1 is arranged at the entrance of the coal mine. The inlet of the filtering component 2 is connected to the air outlet hole of the suction component 3, and the exhaust port of the filtering component 2 is arranged at the water curtain door 1. The suction component 3 extracts the dust-containing air near the bit of the fully-mechanized heading machine. The water curtain door 1 includes a support frame 4, a downward pressing component 5 and a water conveying member 6. A water conveying cavity 7 is arranged inside the support frame 4. The upper end of the downward pressing component 5 is arranged inside the upper wall of the water conveying cavity 7, and the lower end of the downward pressing component 5 is arranged in the water conveying cavity 7. The water conveying member 6 is arranged inside the support frame 4, and the lower end of the downward pressing component 5 is arranged at the upper end of the support frame 4. The downward pressing component 5 includes a waterproof hydraulic rod 8, a driving plate 9 and a connecting plate 10. The fixed end of the waterproof hydraulic rod 8 is arranged inside the upper wall of the water conveying cavity 7. The driving plate 9 and the connecting plate 10 are arranged in the water conveying cavity 7. The connecting plate 10 is connected to the movable end of the waterproof hydraulic rod 8, and the driving plate 9 is connected to the connecting plate 10. A first water passing cavity 11 penetrates through the driving plate 9. There are several groups of the first water passing cavities 11, and several groups of the first water passing cavities 11 are arranged at equal intervals and uniformly in the driving plate 9. A plugging rod 12 is arranged on the bottom wall of the driving plate 9. There are several groups of the plugging rods 12, and several groups of the plugging rods 12 are arranged at equal intervals and uniformly on the bottom wall of the driving plate 9. The plugging rods 12 are arranged in a staggered manner with the first water passing cavities 11. When the waterproof hydraulic rod 8 works to push the connecting plate 10 to move up and down, the connecting plate 10 drives the driving plate 9 to move up and down. A second water passing cavity 13 is arranged inside the water conveying member 6. The second water passing cavity 13 penetrates through the water conveying member 6. There are several groups of the second water passing cavities 13, and several groups of the second water passing cavities 13 are arranged at equal intervals and uniformly on the water conveying member 6. The second water passing cavities 13 are arranged corresponding to the positions of the plugging rods 12 and the first water passing cavities 11. When the driving plate 9 moves down to the upper wall of the water conveying member 6, the first water passing cavity 11 is communicated with the second water passing cavity 13, and a plugging member is inserted into the corresponding second water passing cavity 13 to block part of the second water passing cavities 13 and adjust the intensity of the water flow. An inlet hole 28 is arranged on the side wall of the support frame 4. The inlet hole 28 is communicated with the water conveying cavity 7, and an external device is connected to the inlet hole 28 to convey water into the water conveying cavity 7 through the inlet hole 28.

[0028] As Figure 1 , Figure 2 and Figure 7As shown in the figure, the filtering component 2 includes a filtering barrel 14, a pull-out filtering member 15, and a bottom plate 16. The filtering barrel 14 is arranged on the bottom plate 16, and the bottom plate 16 supports and fixes the filtering barrel 14. The pull-out filtering member 15 is movably arranged inside the filtering barrel 14. There are several groups of pull-out filtering members, namely pull-out filtering member one 30, pull-out filtering member two 31, pull-out filtering member three 32, and pull-out filtering member four 33. The pull-out filtering member one 30, pull-out filtering member two 31, pull-out filtering member three 32, and pull-out filtering member four 33 are sequentially arranged on the filtering barrel 14 to filter the extracted air. An air inlet hole 17 is provided on the front wall of the filtering barrel 14, and an exhaust pipe 18 is provided on the rear wall of the filtering barrel 14. The exhaust pipe is arranged at the water curtain door 1. A pressure bladder member 19 is provided on the upper inner wall of the filtering barrel 14. The pressure bladder member 19 is arranged between the pull-out filtering member one 30 and the front wall of the filtering barrel 14. A support member 20 is arranged between the pressure bladder members 19. The pressure bladder member 19 can be deformed under pressure. A contact member one 21 is provided on the support member 20, and a contact member two 22 is provided on the upper inner wall of the filtering barrel 14. The contact member one 21 and the contact member two 22 are arranged oppositely. Initially, the pressure inside the pressure bladder member 19 is the same as the pressure of the filtering barrel 14 when it is not working. After the filtering barrel 14 starts working, if the filtering holes on the pull-out filtering member one 30 are blocked by dust due to long filtering time, with the input of gas from the suction component, the pressure between the pull-out filtering member one 30 and the front wall of the filtering barrel 14 increases. The pressure bladder member 19 moves towards the upper inner wall of the filtering barrel 14 under pressure, and the contact member one 21 and the contact member two 22 approach and contact each other to achieve an alarm. At the same time, the waterproof hydraulic rod 8 is controlled to move upward to expose more of the water passing cavity two 13 and increase the water flow. A pressure sensor 23 is provided on the bottom plate 16. The pressure sensor 23 is arranged at the lower end of the pull-out filtering member one 30. A controller 24 is arranged inside the bottom plate 16. The controller 24 is connected to the pressure sensor 23, the contact member one 21, the contact member two 22, and the waterproof hydraulic rod 8. Moving wheels 29 are provided on the bottom plate 16, and the moving wheels 29 can be fixed and moved.

[0029] As Figure 1 shown, the suction component includes an air extraction pump 25. An air outlet pipe 26 and an air extraction pipe 27 are provided on the air extraction pump 25. The air outlet pipe 26 is connected to the air inlet hole 17 on the front wall of the filtering barrel 14. The suction component 3 extracts the dusty air near the bit of the fully mechanized heading machine.

[0030] During specific use, initially, the pull-out filter element 1 30, the pull-out filter element 2 31, the pull-out filter element 3 32, and the pull-out filter element 4 33 are all installed on the filter barrel 14. Then, the equipment is transported into the coal mine through the moving wheels 29. The air extraction pump 25 operates to extract the dusty air near the bit of the full-section tunneling machine through the air extraction pipe 27, and then discharges it into the filter barrel 14 through the air outlet pipe 26. After the gas with dust enters the filter barrel 14, it passes through the filtration of the pull-out filter element 1 30, the pull-out filter element 2 31, the pull-out filter element 3 32, and the pull-out filter element 4 33, reaches the exhaust pipe 18, and the gas discharged through the exhaust pipe 18 passes through the water curtain door 1 and is then discharged into the air;

[0031] Initially, the pressure inside the pressure bladder-shaped part 19 is the same as the pressure of the filter barrel 14 when it is not working. At the same time, the bottom wall of the driving plate 9 is arranged on the upper wall of the water delivery part 6. The water passage cavity 1 11 is connected to the water passage cavity 2 13 in a through manner. The plugging part is inserted into the corresponding water passage cavity 2 13 to block a part of the water passage cavity 2 13 and weaken the water flow intensity. After the filter barrel 14 starts working, if the filter holes on the pull-out filter element 1 30 are blocked by dust after a long filtration time, with the input of the gas extracted by the air extraction pump 25, the pressure between the pull-out filter element 1 30 and the front wall of the filter barrel 14 increases. The pressure bladder-shaped part 19 moves towards the upper wall inside the filter barrel 14 under the pressure. The contact part 1 21 and the contact part 22 approach and conduct to realize an alarm. At the same time, the controller 24 receives the signal and controls the waterproof hydraulic rod 8 to move upward. The plugging rod 12 disengages from the water passage cavity 2 13, exposing more of the water passage cavity 2 13. At the same time, an external water delivery device increases the water flow input, and the water curtain door 1 increases the water flow to enhance the filtration of the air. Then, the pull-out filter element 1 30 is pulled out from the filter barrel 14, then the pull-out filter element 2 31 is pulled out from the filter barrel 14, the pull-out filter element 3 32 is pulled out from the filter barrel 14, the pull-out filter element 3 32 is placed in the position of the original pull-out filter element 2 31, the pull-out filter element 4 33 is pulled out from the filter barrel 14 and placed in the position of the original pull-out filter element 3 32, the new pull-out filter element 15 is placed in the position of the original pull-out filter element 4 33, the pull-out filter element 2 31 is placed in the position of the pull-out filter element 1 30, the bottom wall of the pull-out filter element 2 31 presses on the pressure sensor 23, the pressure sensor 23 transmits the data to the controller 24, and the controller 24 controls the waterproof hydraulic rod 8 to move downward, driving the connecting plate 10 to move downward. The connecting plate 10 drives the driving plate 9 to move downward. The bottom wall of the driving plate 9 is arranged on the upper wall of the water delivery part 6. The water passage cavity 1 11 is connected to the water passage cavity 2 13 in a through manner. The plugging part is inserted into the corresponding water passage cavity 2 13 to block a part of the water passage cavity 2 13 and weaken the water flow intensity. The pressure bladder-shaped part 19 restores its deformation and moves in the direction away from the upper wall inside the filter barrel 14, and the contact part 1 21 and the contact part 22 separate to realize power-off.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0034] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A dust removal system for coal mine mining, characterized in that: It includes a water curtain door, a filtering component, and a suction component. The water curtain door is arranged at the entrance of the coal mine. The inlet of the filtering component is connected to the air outlet of the suction component, and the exhaust outlet of the filtering component is arranged at the water curtain door. The water curtain door includes a support frame, a pressing-down component, and a water delivery component. A water delivery cavity is arranged inside the support frame. The upper end of the pressing-down component is arranged inside the upper wall of the water delivery cavity, and the lower end of the pressing-down component is arranged in the water delivery cavity. The water delivery component is arranged inside the support frame, and the lower end of the pressing-down component is arranged at the upper end of the support frame. The pressing-down component includes a waterproof hydraulic rod, a driving plate, and a connecting plate. The fixed end of the waterproof hydraulic rod is arranged inside the upper wall of the water delivery cavity. The driving plate and the connecting plate are arranged inside the water delivery cavity. The connecting plate is connected to the movable end of the waterproof hydraulic rod, and the driving plate is connected to the connecting plate. A first water passing cavity is penetrated through the driving plate. There are several groups of the first water passing cavities, and several groups of the first water passing cavities are evenly arranged at equal intervals inside the driving plate. A sealing rod is arranged on the bottom wall of the driving plate. There are several groups of the sealing rods, and several groups of the sealing rods are evenly arranged at equal intervals on the bottom wall of the driving plate. The sealing rods and the first water passing cavities are arranged in a staggered manner. The filtering component includes a filtering barrel, a pull-out filtering member, and a bottom plate. The filtering barrel is arranged on the bottom plate. The pull-out filtering member is movably arranged inside the filtering barrel. There are several groups of the pull-out filtering members, namely a first pull-out filtering member, a second pull-out filtering member, a third pull-out filtering member, and a fourth pull-out filtering member. The first pull-out filtering member, the second pull-out filtering member, the third pull-out filtering member, and the fourth pull-out filtering member are sequentially arranged on the filtering barrel. An air inlet hole is arranged on the front wall of the filtering barrel, and an exhaust pipe is arranged on the rear wall of the filtering barrel. The exhaust pipe is arranged at the water curtain door. A pressure bladder-shaped member is arranged on the upper inner wall of the filtering barrel, between the first pull-out filtering member and the front wall of the filtering barrel. A support member is arranged between the pressure bladder-shaped members. The pressure bladder-shaped member can deform under pressure. A first contact member is arranged on the support member, and a second contact member is arranged on the upper inner wall of the filtering barrel. The first contact member and the second contact member are arranged oppositely. A pressure sensor is arranged on the bottom plate, at the lower end of the first pull-out filtering member. A controller is arranged inside the bottom plate. The controller is connected to the pressure sensor, the first contact member, the second contact member, and the waterproof hydraulic rod.

2. The coal mine dust removal system according to claim 1, wherein: A second water passing cavity is arranged inside the water delivery component, penetrating through the water delivery component. There are several groups of the second water passing cavities, and several groups of the second water passing cavities are evenly arranged at equal intervals on the water delivery component. The second water passing cavities are arranged corresponding to the positions of the sealing rods and the first water passing cavities.

3. The dust removal system for coal mine mining according to claim 1, characterized in that: The suction component includes an air extraction pump. An air outlet pipe and an air suction pipe are arranged on the air extraction pump. The air outlet pipe is connected to the air inlet hole on the front wall of the filtering barrel.

4. A coal mine dust removal system according to claim 3, characterized in that: An inlet hole is arranged on the side wall of the support frame, and the inlet hole is connected to the water delivery cavity in a through manner.

5. The coal mine dust removal system according to claim 4, wherein: Moving wheels are arranged on the bottom plate.

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