Gas over-limit ventilation device for mining area

Abstract

The invention discloses a mining area gas over-limit ventilation device which comprises an integrally sealed shell, a filter pipe capable of rotating is arranged in the shell, and a renewable gas adsorption material is arranged in the filter pipe. The first subspace is used for sucking air, the third subspace is used for discharging filtered air, the second subspace is used for sealing, and the fourth subspace is used for discharging gas. When the second subspace is communicated with the fourth subspace, the gas in the air can be filtered, the mining area can be ventilated, and when the second subspace is communicated with the fourth subspace, the gas can be collected; compared with the prior art, the method has the advantages that the problem of gas overrun in the mining area is effectively solved, gas resource recycling is achieved, and remarkable economic benefits and environmental benefits are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and specifically to a ventilation device for gas overlimit in mining areas. Background Art

[0002] In mining operations, gas overlimit is a long-existing safety hazard. Gas, namely combustible gases such as methane in mines, if the concentration exceeds the safety threshold, may not only trigger explosion accidents, seriously threatening the lives of miners, but also cause damage to mining equipment and affect production efficiency. Therefore, developing efficient and reliable gas overlimit ventilation devices is crucial for ensuring safe production in mining areas.

[0003] Currently, the ventilation methods commonly used in mining areas mainly rely on high-power fans for forced ventilation. These fans deliver fresh air to the mining area while exhausting the dirty air containing gas, so as to achieve the purpose of diluting the gas concentration and keeping the air fresh.

[0004] Existing ventilation equipment often needs to exhaust the air of the entire mining area to the outside world, which not only consumes a large amount of energy, but also requires extremely high power for the fans. As the mining depth increases, the ventilation resistance gradually increases, and the power required for the fans also increases accordingly, which undoubtedly increases the mining cost. Due to the complex terrain in the mining area, the ventilation path is long and variable, resulting in generally low ventilation efficiency of existing ventilation equipment. Even with high-power fans, it is difficult to effectively reduce the gas concentration in a short time, especially in areas where gas accumulation is relatively serious.

[0005] Directly exhausting the dirty air containing gas to the outside world will not only cause environmental pollution, but also result in a great waste of resources as gas is a clean energy source. Gas has a high calorific value and good combustion performance, and is a high-quality energy resource. However, existing ventilation equipment also discharges gas while exhausting the dirty air, leading to waste of gas resources. If gas can be effectively recovered and utilized, it will not only help reduce environmental pollution, but also bring additional economic benefits to the mining area. Summary of the Invention

[0006] To solve the above problems, the present invention provides a ventilation device for gas overlimit in mining areas, including: a shell that is integrally sealed, and the interior of the shell is sequentially divided into an air inlet end, an air filtration and treatment part, and an air outlet end along the axis of the shell by arranging a first partition board and a second partition board perpendicular to the axis of the shell;

[0007] Among them: the interiors of the air inlet end and the air outlet end are separated into four sub-spaces with different uses by fixedly arranging a third partition board: a first sub-space for sucking air, a second sub-space for sealing, a third sub-space for discharging the filtered air, and a fourth sub-space for discharging gas;

[0008] The air filtration and treatment section is provided with a filter tube and a rotating mechanism capable of driving the filter tube to rotate around the axis of the housing;

[0009] The filter tube is provided with a renewable gas adsorption material. The filter tube successively connects the first sub-space and the third sub-space, and the second sub-space and the fourth sub-space through the rotating mechanism and in cooperation with the ventilation holes correspondingly arranged on the first partition plate and the second partition plate. And when the filter tube rotates to the position connecting the second sub-space and the fourth sub-space, a heating tube is correspondingly arranged on the inner wall of the housing of the air filtration and treatment section.

[0010] Furthermore, a plurality of circles of first through holes are formed in the side wall of the filter tube, and an outer tube is slidably arranged on the outer wall of the filter tube. Second through holes corresponding to the first through holes are formed in the side wall of the outer tube;

[0011] A magnetic conductive ring is fixed at one end of the outer tube close to the air inlet end. A spring is arranged between the magnetic conductive ring and the first partition plate. In the natural state of the spring, the first through hole and the second through hole are staggered;

[0012] A magnet is arranged on the first partition plate located in the second sub-space, and auxiliary ventilation holes are arranged around the ventilation holes of the second partition plate located in the fourth sub-space

[0013] Furthermore, when both the first partition plate and the second partition plate are rotatably arranged in the housing:

[0014] The number of ventilation holes on the first partition plate and the second partition plate is the same as the number of filter tubes;

[0015] The rotating mechanism includes a central shaft. The axis of the central shaft coincides with the axis of the housing. The central shaft is fixedly connected to the first partition plate and the second partition plate. And one end of the central shaft rotatably penetrates outside the air inlet end and is connected to the output shaft of the driving motor. The two ends of the filter tube are fixed on the corresponding ventilation holes of the first partition plate and the second partition plate;

[0016] When both the first partition plate and the second partition plate are fixedly arranged in the housing:

[0017] The number of ventilation holes on the first partition plate and the second partition plate is respectively the same as the number of sub-spaces included in the air inlet end and the air outlet end;

[0018] The rotating mechanism includes a central shaft. The axis of the central shaft coincides with the axis of the housing. The central shaft is rotatably connected to the first partition plate and the second partition plate. And one end of the central shaft rotatably penetrates outside the air inlet end and is connected to the driving motor;

[0019] The filter tube is fixedly connected to the central shaft through a bracket and is butted against the corresponding ventilation holes on the first partition plate and the second partition plate;

[0020] Further, when there are multiple filter tubes, sealing plates are distributed between adjacent filter tubes, and the sealing plates are fixedly connected to the central axis;

[0021] Further, the gas adsorption material is activated carbon or zeolite;

[0022] Further, the housing is composed of a central tube and two cylinders with one end closed, which are connected by flanges and bolts.

[0023] Further, an air inlet is provided on the housing corresponding to the first subspace. Through the air inlet, a gas pump and a pipeline are used to suck the air in the mining area into the first subspace;

[0024] Further, an air outlet is provided on the housing corresponding to the third subspace. Through the air outlet, a gas pump and a pipeline are used to discharge the air in the third subspace into the mining area;

[0025] Further, a gas port is provided on the housing corresponding to the fourth subspace. Through the gas port, a gas pump and a pipeline are used to discharge the gas in the fourth subspace.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The present invention adopts a design of filter tubes that rotate step by step intermittently, which can continuously and efficiently process the incoming air, effectively adsorb the gas components therein, significantly reduce the gas concentration in the mining area, and thus greatly improve the safety of the working environment. Moreover, through the heating effect of the heating tube, the regeneration of the adsorption material can be realized, and at the same time, the adsorbed gas is released. This not only extends the service life of the adsorption material but also realizes the resource recovery of gas, with remarkable economic and environmental benefits.

[0028] The present invention drives the rotation of the central axis and the turntable through a drive motor, realizing the automatic control of the entire gas treatment process, reducing manual intervention, improving work efficiency, and at the same time reducing the operation difficulty and cost.

[0029] In the present invention, the outer tube slidingly arranged on the outer wall of the filter tube and its through-hole design enable the gas to be released more smoothly from the filter tube during the heating regeneration stage. At the same time, through the interaction between the magnet and the magnetic conductive ring, the automatic opening and closing of the through-hole of the outer tube are realized, further improving the efficiency of gas release and collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an overall structural schematic diagram of a gas overrun ventilation device for a mining area;

[0031] Figure 2 is an internal structural schematic diagram of a gas overrun ventilation device for a mining area;

[0032] Figure 3 It is a schematic cross-sectional structure diagram of a ventilation device for gas overrun in a mining area;

[0033] Figure 4 It is an enlarged schematic structure diagram at the magnetic conduction ring;

[0034] Figure 5 It is a schematic cross-sectional structure diagram of the housing;

[0035] In the figure: 1. Housing; 2. Intake end; 21. Intake port; 22. Bottom plate; 3. Outlet end; 31. Outlet port; 32. Gas port; 4. Filter pipe; 41. Outer pipe; 42. Magnetic conduction ring; 43. Spring; 5. First partition; 6. Second partition; 7. Central axis; 8. Driving motor; 9. Magnet; 10. Sealing plate; 11. Third partition; 12. Ventilation hole; 13. First through hole; 14. Second through hole; 15. Auxiliary ventilation hole. Specific implementation manner

[0036] Next, the technical solutions adopted by the present invention will be clearly and completely explained and described in conjunction with the specification drawings and embodiments.

[0037] As Figures 1-3 shown, the present invention provides a ventilation device for gas overrun in a mining area. The ventilation device is an integrally sealed housing 1, such as a cylindrical structure with both ends closed. However, for the convenience of installation and maintenance, it is preferably set that the housing 1 is composed of a central pipe and two cylindrical bodies with one end closed, which are connected by flanges and bolts;

[0038] Inside the housing 1, there are two first partitions 5 and second partitions 6 perpendicular to the axis of the housing 1. Through the first partitions 5 and second partitions 6, the inside of the housing 1 is divided into three independent spaces along the axis of the housing 1, which are respectively: the intake end 2 at one end of the sealed housing 1, the air filtration and treatment part in the middle of the sealed housing 1, and the outlet end 3 at the other end of the sealed housing 1. Among them:

[0039] The inside of both the intake end 2 and the outlet end 3 is divided into four sub-spaces with different uses by fixedly arranging a third partition 11, namely: the first sub-space, the second sub-space, the third sub-space, and the fourth sub-space;

[0040] In this embodiment, the first sub-space is used to inhale the air in the mining area. Specifically, an intake port 21 can be provided on the housing 1 corresponding to the first sub-space, and the air in the mining area is inhaled into the first sub-space through the intake port 21 by using an air pump and a pipeline;

[0041] The second sub-space is a sealed space, which is used to prevent the gas separated from the air from entering other sub-spaces;

[0042] The third subspace is used to discharge the filtered air. Specifically, an air outlet 31 can be provided on the housing 1 corresponding to the third subspace. Similarly, the air in the third subspace can be discharged into the mining area through the air outlet 31 by using an air pump in cooperation with a pipeline.

[0043] The fourth subspace is used to discharge the gas filtered out from the air. Specifically, a gas outlet 32 can be provided on the housing 1 corresponding to the fourth subspace. Similarly, the gas in the fourth subspace can be discharged by using an air pump in cooperation with a pipeline.

[0044] Moreover, the third subspace and the first subspace are in a corresponding relationship, and the fourth subspace and the second subspace are in a corresponding relationship.

[0045] Furthermore, the number of subspaces for each use in the air inlet end 2 and the air outlet end 3 can be increased by changing the cross-sectional shape of the third partition 11. For example, Figure 2 changing the third partition 11 with a cross-section of a single line shape to a cross-section of a cross shape can increase the number of subspaces for each use to four, improving the working efficiency of the entire device.

[0046] An air filtration treatment unit is provided with a filtration pipe 4 capable of filtering gas in the air and a rotating mechanism capable of driving the filtration pipe 4 to rotate around the axis of the housing 1. Ventilation holes 12 are correspondingly provided on the first partition 5 and the second partition 6 to connect the first subspace and the third subspace and the second subspace and the fourth subspace. The rotating mechanism drives the filtration pipe 4 to rotate, so that the filtration pipe 4 connects the first subspace and the third subspace and the second subspace and the fourth subspace respectively through the ventilation holes 12.

[0047] The filtration pipe 4 is provided with a renewable gas adsorption material, such as activated carbon, zeolite and other materials. This kind of material can adsorb gas in the air at normal temperature, and can release the adsorbed gas when heated, and can be reused after release.

[0048] The present invention precisely utilizes the characteristics of the renewable gas adsorption material. When the filtration pipe 4 rotates to the position where it connects the second subspace and the fourth subspace, a heating pipe is provided on the inner wall corresponding to the air filtration treatment unit of the housing 1. That is, when the filtration pipe 4 connects the first subspace and the third subspace, the gas adsorption material in the filtration pipe 4 can adsorb the gas in the air in the first subspace, that is, the air in the mining area is filtered. The filtered air can be discharged into the mining area from the third subspace, that is, the ventilation of the goaf is realized.

[0049] Then, the rotation mechanism drives the filter tube 4 to rotate, so that it connects the second subspace and the fourth subspace. At this time, the heating tube on the inner wall of the housing 1 heats up, and the gas adsorption material in the filter tube 4 releases the adsorbed gas after being heated, and discharges the gas through the fourth subspace. The gas in the fourth subspace can be compressed into the gas storage cylinder through the gas port 32 by using a compressed air pump, that is, the recovery of gas resources is realized;

[0050] After that, the rotation mechanism drives the filter tube 4 to rotate again, so that it connects the first subspace and the third subspace to re-filter the gas;

[0051] Furthermore, in this embodiment, the first partition 5 and the second partition 6 can be rotatably arranged in the housing 1. At this time, both ends of the filter tube 4 are fixed on the corresponding ventilation holes 12 of the first partition 5 and the second partition 6. The rotation mechanism includes a central shaft 7, whose axis coincides with the axis of the housing 1. The central shaft 7 is fixedly connected to the first partition 5 and the second partition 6, and one end of the central shaft 7 rotatably penetrates through the bottom plate 22 of the air inlet end 2 and is connected to the output shaft of the driving motor 8. In this embodiment, the driving motor 8 is preferably an intermittent stepping motor.

[0052] That is, the driving motor 8 drives the central shaft 7 to rotate, thereby driving the first partition 5, the second partition 6 and the filter tube 4 to rotate synchronously, so as to realize the connection between the first subspace and the third subspace and between the second subspace and the fourth subspace.

[0053] The filter tube 4 can also be provided in multiple numbers to further improve the efficiency. At this time, the number of ventilation holes 12 on the first partition 5 and the second partition 6 is the same as the number of filter tubes 4.

[0054] In other embodiments, the first partition 5 and the second partition 6 can also be fixed in the housing 1. Different from the above embodiment, at this time, the central shaft 7 of the rotation mechanism is rotatably connected to the first partition 5 and the second partition 6, and the filter tube 4 can be connected and fixed to the central shaft 7 by setting a bracket. That is, the driving motor 8 drives the filter tube 4 to rotate through the central shaft 7, and sequentially docks the corresponding ventilation holes 12 on the first partition 5 and the second partition 6, so as to realize the connection between the first subspace and the third subspace and between the second subspace and the fourth subspace.

[0055] Furthermore, as Figure 3 shown, a plurality of circles of first through holes 13 can be opened on the side wall of the filter tube 4, and an outer tube 41 is slidably arranged on the outer wall of the filter tube 4. As Figure 4 shown, the side wall of the outer tube 41 is provided with second through holes 14 corresponding to the first through holes 13 on the side wall of the filter tube 4.

[0056] That is to say, by sliding the outer tube 41, the first through hole 13 and the second through hole 14 on the side wall of the outer tube 41 can be made to coincide with or stagger from the filter tube 4, so as to open or close the first through hole 13 on the side wall of the filter tube 4.

[0057] In this embodiment, a magnetic conductive ring 42 is fixed at one end of the outer tube 41 close to the air inlet end 2. A spring 43 is arranged between the magnetic conductive ring 42 and the first partition plate 5. In the natural state, the spring 43 makes the first through hole 13 and the second through hole 14 on the side wall of the outer tube 41 stagger from the filter tube 4.

[0058] In this embodiment, a magnet 9 is arranged on the first partition plate 5 in the second sub - space;

[0059] As Figure 5 shown, auxiliary ventilation holes 15 are arranged around the ventilation hole 12 of the second partition plate 6 in the fourth sub - space;

[0060] That is to say, when the filter tube 4 rotates to the upper part of the housing 1, its magnetic conductive ring 42 will be adsorbed by the magnet 9, so that the outer tube 41 compresses the spring 43 and slides towards the first partition plate 5, making the first through hole 13 and the second through hole 14 coincide. At this time, the gas adsorbed by the gas adsorption material in the filter tube 4 can be released from the side walls of the filter tube 4 and the outer tube 41, and discharged from the auxiliary ventilation holes 15 around the ventilation hole 12 of the second partition plate 6 into the fourth sub - space, so as to improve the heating and release efficiency of the gas adsorption material.

[0061] Furthermore, when there are multiple filter tubes 4, a sealing plate 10 is distributed between adjacent filter tubes 4. The sealing plate 10 is fixedly connected to the central axis 7, and each filter tube 4 is mutually sealed to ensure that the gas released from the side walls of the filter tube 4 and the outer tube 41 will not enter the third sub - space.

[0062] The above - mentioned is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A gas overrun ventilation device for a mining area, comprising: A wholly sealed housing (1), the interior of the housing (1) is sequentially divided along the axis of the housing (1) into an air inlet end (2), an air filtration and treatment section, and an air outlet end (3) by arranging a first partition plate (5) and a second partition plate (6) perpendicular to the axis of the housing (1). Among them: the interiors of the air inlet end (2) and the air outlet end (3) are respectively divided into four sub-spaces with different uses by fixedly arranging a third partition plate (11): a first sub-space for sucking air, a second sub-space for sealing, a third sub-space for discharging filtered air, and a fourth sub-space for discharging gas. A filter tube (4) and a rotating mechanism capable of driving the filter tube (4) to rotate around the axis of the housing (1) are provided in the air filtration and treatment section. It is characterized in that a renewable gas adsorption material is provided in the filter tube (4), and the filter tube (4) sequentially connects the first sub-space and the third sub-space and the second sub-space and the fourth sub-space through the ventilation holes (12) correspondingly arranged on the first partition plate (5) and the second partition plate (6) by means of the rotating mechanism. And when the filter tube (4) rotates to the position connecting the second sub-space and the fourth sub-space, a heating tube is correspondingly arranged on the inner wall of the housing (1) in the air filtration and treatment section.

2. The gas overrun ventilation device for a mining area according to claim 1, characterized in that, A plurality of circles of first through holes (13) are formed on the side wall of the filter tube (4), and an outer tube (41) is slidably arranged outside the side wall of the filter tube (4), and a second through hole (14) corresponding to the first through hole (13) is formed on the side wall of the outer tube (41). A magnetic conductive ring (42) is fixed at one end of the outer tube (41) close to the air inlet end (2), and a spring (43) is arranged between the magnetic conductive ring (42) and the first partition plate (5). In the natural state of the spring (43), the first through hole (13) and the second through hole (14) are staggered. A magnet (9) is arranged on the first partition plate (5) in the second sub-space, and auxiliary ventilation holes (15) are arranged around the ventilation holes (12) of the second partition plate (6) in the fourth sub-space.

3. The gas overrun ventilation device for a mining area according to claim 2, characterized in that, When the first partition plate (5) and the second partition plate (6) are both rotatably arranged in the housing (1): The number of ventilation holes (12) on the first partition plate (5) and the second partition plate (6) is the same as the number of filter tubes (4). The rotating mechanism includes a central shaft (7), the axis of the central shaft (7) coincides with the axis of the housing (1), the central shaft (7) is fixedly connected to the first partition plate (5) and the second partition plate (6), and one end of the central shaft (7) rotatably penetrates outside the air inlet end (2) and is connected to the output shaft of a driving motor (8). The two ends of the filter tube (4) are fixed on the corresponding ventilation holes (12) of the first partition plate (5) and the second partition plate (6).

4. The gas over-limit ventilation device for a mining area according to claim 2, characterized in that, When the first partition plate (5) and the second partition plate (6) are both fixedly arranged in the housing (1): The number of ventilation holes (12) on the first partition plate (5) and the second partition plate (6) is the same as the number of sub-spaces included in the air inlet end (2) and the air outlet end (3) respectively. The rotating mechanism includes a central shaft (7), the axis of the central shaft (7) coincides with the axis of the housing (1), the central shaft (7) is rotatably connected to the first partition plate (5) and the second partition plate (6), and one end of the central shaft (7) rotatably penetrates outside the air inlet end (2) and is connected to the drive motor (8); The filter tube (4) is fixedly connected to the central shaft (7) through a bracket.

5. A gas overrun ventilation device for a mining area according to claim 3 or 4, characterized in that, When there are multiple filter tubes (4), a sealing plate (10) is distributed between adjacent filter tubes (4), and the sealing plate (10) is fixedly connected to the central shaft (7).

6. The gas overrun ventilation device for a mining area according to claim 1, characterized in that, The gas adsorption material is activated carbon or zeolite.

7. The gas overrun ventilation device for a mining area according to claim 1, characterized in that, The housing (1) is composed of a central tube and two cylindrical bodies with one end closed, which are connected by flanges and bolts.

8. A gas overrun ventilation device for a mining area according to claim 1, characterized in that, An air inlet (21) is provided on the housing (1) corresponding to the first subspace, and the air is sucked into the first subspace through the air inlet (21) by using an air pump and a pipeline.

9. The gas over-limit ventilation device for mining areas according to claim 1, characterized in that, An air outlet (31) is provided on the housing (1) corresponding to the third subspace, and the air in the third subspace is discharged through the air outlet (31) by using an air pump and a pipeline.

10. A gas overrun ventilation device for a mining area according to claim 1, characterized in that, A gas port (32) is provided on the housing (1) corresponding to the fourth subspace, and the gas in the fourth subspace is discharged through the gas port (32) by using an air pump and a pipeline.

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