Gas-slag separation device for gas drainage of underground coal mine

Abstract

The utility model relates to the technical field of gas drainage, and discloses a gas-slag separation device for gas drainage in an underground coal mine, which comprises a separation shell, and a filter screen plate is vertically and fixedly connected inside the gas outlet end of the separation shell, so that solid impurities such as coal slag in gas can be filtered, and the gas drainage efficiency is improved. A worker can drive a valve plate connected with a second shaft rod and a third shaft rod to rotate in the slag discharging end of the separation shell through a hand wheel, when the valve plate rotates to be in an inclined state, coal slag in the slag discharging end of the separation shell can be discharged, meanwhile, the second shaft rod can drive a large bevel gear to rotate, and the large bevel gear is meshed with a second bevel gear, so that coal slag in the slag discharging end of the separation shell is discharged. A first bevel gear can be driven to rotate through a connecting rod, the first bevel gear is meshed with a small bevel gear, a cleaning brush can be driven to rotate on the outer side of a filter screen plate through a first shaft rod, and therefore in the slag discharging process of the separation shell, coal slag on the outer side of the filter screen plate can be automatically cleaned, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas drainage, in particular to a gas-slag separation device for gas drainage in coal mines underground. Background Technique

[0002] In order to ensure the safety of coal mine production underground, the extraction of gas in coal seams is an important work for ensuring the safety of coal mines underground. The main tool for gas extraction is a gas extraction pump. However, during the process of extracting gas in coal seams by the gas extraction pump, the bearings and seals of the gas extraction pump are often worn by the coal slag and stone slag carried in the rapidly flowing gas stream, resulting in the gas extraction pump being unable to be used, seriously affecting the safety of coal mine production underground.

[0003] After retrieval, the publication number is CN202596773U, which discloses a gas-slag separation device for gas drainage in coal mines underground. The gas-slag separation device is set as a tank body, and an air inlet hole is arranged at the upper end of the tank body; a filter steel plate is arranged in the tank body, and a number of air permeable holes smaller than 0.8 mm are arranged on the filter steel plate. The filter steel plate divides the tank body into a mixing chamber and a purification chamber.

[0004] In the process of realizing the present utility model, the inventor found that at least the following problems in the prior art have not been solved. In the above case, the coal slag and stone slag carried in the rapidly flowing gas stream are separated by the filter steel plate and discharged through the slag outlet hole, so that the gas entering the gas extraction pump is no longer mixed with coal slag. However, during use, the filter holes of the filter steel plate are easily blocked after long-term use, affecting the flow of gas, and it is necessary to often disassemble and clean, which is cumbersome in operation, time-consuming, and affects the normal gas extraction.

[0005] Therefore, we propose a gas-slag separation device for gas drainage in coal mines underground, which can solve the above problems. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a gas-slag separation device for gas drainage in coal mines underground, which solves the problems raised in the background technique.

[0007] To achieve the above object, the utility model provides the following technical solutions: A gas-slag separation device for gas drainage in coal mines, including a separation housing. The separation housing is in a T shape. Inside the air outlet end of the separation housing, a filter screen plate is vertically and fixedly connected. Inside the slag discharge end of the separation housing, a valve plate is arranged. Cleaning mechanism: used to discharge the coal slag inside the separation housing and clean the filter screen plate. The cleaning mechanism includes a cleaning brush and a connecting rod. The cleaning brush is placed on the side of the filter screen plate close to the air inlet of the separation housing. The middle of the filter screen plate is rotatably connected by a bearing to a first shaft. One end of the first shaft is fixedly connected to the middle of the cleaning brush. Horizontally and fixedly installed in the middle of both sides of the valve plate are a second shaft and a third shaft. At the end of the second shaft outside the separation housing, a large bevel gear is fixedly installed. At the end of the connecting rod inside the separation housing, a first bevel gear is fixedly installed. The first bevel gear meshes with a small bevel gear. At the end of the connecting rod outside the separation housing, a second bevel gear is fixedly installed. The second bevel gear meshes with the large bevel gear.

[0008] As an alternative solution of the technical solution of this application, the cleaning brush and the filter screen plate are dimensionally matched, and the cleaning end of the cleaning brush is in contact with the outer side of the filter screen plate.

[0009] As an alternative solution of the technical solution of this application, a protective housing is fixedly connected to the outer side of the lower end of the separation housing. The large bevel gear and the second bevel gear are placed inside the protective housing.

[0010] As an alternative solution of the technical solution of this application, the second shaft and the third shaft are rotatably connected to the inner walls on both sides of the slag discharge end of the separation housing through sealed bearings. At the end of the third shaft outside the separation housing, a handwheel is fixedly installed.

[0011] As an alternative solution of the technical solution of this application, the first bevel gear and the small bevel gear are dimensionally matched, and the second bevel gear and the large bevel gear are dimensionally matched.

[0012] As an alternative solution of the technical solution of this application, the connecting rod is rotatably connected to the inner wall of the bottom end of the separation housing through a sealed bearing. The first bevel gear and the second bevel gear are dimensionally matched.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows. A filter screen plate is fixedly connected vertically inside the air outlet end of the separation housing, which can filter solid impurities such as coal slag in the gas. The staff can drive the valve plate connected to the second shaft rod and the third shaft rod to rotate inside the slag discharge end of the separation housing through the handwheel. When the valve plate rotates to an inclined state, the coal slag inside the slag discharge end of the separation housing can be discharged. At the same time, the second shaft rod can drive the large bevel gear to rotate. Through the meshing of the large bevel gear and the second bevel gear, the connecting rod can drive the first bevel gear to rotate. Through the meshing of the first bevel gear and the small bevel gear, the cleaning brush can be driven by the first shaft rod to rotate outside the filter screen plate. Therefore, during the slag discharge process of the separation housing, the coal slag outside the filter screen plate can be automatically cleaned, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects, and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 is the front view of a gas-slag separation device for gas drainage in coal mines underground of the present utility model;

[0016] Figure 2 is the side view of the filter screen plate of a gas-slag separation device for gas drainage in coal mines underground of the present utility model.

[0017] In the figure: 1. Separation housing; 11. Valve plate; 12. Filter screen plate; 13. Cleaning brush; 14. First shaft rod; 15. Small bevel gear; 16. Second shaft rod; 17. Large bevel gear; 18. Third shaft rod; 19. Handwheel; 2. Connecting rod; 21. First bevel gear; 22. Second bevel gear; 23. Protective housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Please refer to Figure 1 - Figure 2, the present utility model provides a technical solution: a gas-slag separation device for gas drainage in coal mines, including a separation housing 1. The separation housing 1 is in a T shape. Inside the gas outlet end of the separation housing 1, a filter screen plate 12 is vertically and fixedly connected. Inside the slag discharge end of the separation housing 1, a valve plate 11 is provided; a cleaning mechanism: used to discharge the coal slag inside the separation housing 1 and clean the filter screen plate 12. The cleaning mechanism includes a cleaning brush 13 and a connecting rod 2. The cleaning brush 13 is placed on the side of the filter screen plate 12 close to the air inlet of the separation housing 1. The middle of the filter screen plate 12 is rotatably connected by a bearing to a first shaft rod 14. One end of the first shaft rod 14 is fixedly connected to the middle of the cleaning brush 13. Horizontally and fixedly installed in the middle of both sides of the valve plate 11 are a second shaft rod 16 and a third shaft rod 18. The second shaft rod 16 and the third shaft rod 18 are rotatably connected to the inner walls of both sides of the slag discharge end of the separation housing 1 through sealed bearings. The end of the second shaft rod 16 outside the separation housing 1 is fixedly installed with a large bevel gear 17. The connecting rod 2 is rotatably connected to the inner wall of the bottom end of the separation housing 1 through a sealed bearing. The end of the connecting rod 2 inside the separation housing 1 is fixedly installed with a first bevel gear 21. The first bevel gear 21 meshes with a small bevel gear 15. The end of the connecting rod 2 outside the separation housing 1 is fixedly installed with a second bevel gear 22. The second bevel gear 22 meshes with the large bevel gear 17. The end of the third shaft rod 18 outside the separation housing 1 is fixedly installed with a handwheel 19. The outside of the lower end of the separation housing 1 is fixedly connected with a protective housing 23. The large bevel gear 17 and the second bevel gear 22 are placed inside the protective housing 23.

[0019] In this technical solution, through the vertically and fixedly connected filter screen plate 12 inside the gas outlet end of the separation housing 1, solid impurities such as coal slag in the gas can be filtered. The staff can drive the valve plate 11 connected to the second shaft rod 16 and the third shaft rod 18 to rotate inside the slag discharge end of the separation housing 1 through the handwheel 19. When the valve plate 11 rotates to an inclined state, the coal slag inside the slag discharge end of the separation housing 1 can be discharged. At the same time, the second shaft rod 16 can drive the large bevel gear 17 to rotate. Through the meshing of the large bevel gear 17 and the second bevel gear 22, the connecting rod 2 can drive the first bevel gear 21 to rotate. Through the meshing of the first bevel gear 21 and the small bevel gear 15, the first shaft rod 14 can drive the cleaning brush 13 to rotate outside the filter screen plate 12. Thus, during the slag discharge process of the separation housing 1, the coal slag outside the filter screen plate 12 can be automatically cleaned, which is convenient and fast.

[0020] In this embodiment, the sizes of the first bevel gear 21 and the small bevel gear 15 are matched, the sizes of the second bevel gear 22 and the large bevel gear 17 are matched, and the sizes of the first bevel gear 21 and the second bevel gear 22 are matched.

[0021] In this technical solution, by matching the sizes of the large bevel gear 17 and the small bevel gear 15, when the large bevel gear 17 rotates one circle, the small bevel gear 15 can rotate several circles, further improving the cleaning efficiency of the cleaning brush 13 for the coal slag on the outer side of the filter screen plate 12. It should be noted that: the valve plate 11 can be continuously rotated through the handle to increase the number of rotation circles of the cleaning brush 13, and a limiting mechanism can be installed on the valve plate 11 according to the usage requirements to ensure the plugging effect on the slag discharge end of the separation housing 1 when the valve plate 11 rotates to the horizontal state.

[0022] In this embodiment, the cleaning brush 13 is matched with the size of the filter screen plate 12, and the cleaning end of the cleaning brush 13 is attached to the outer side of the filter screen plate 12.

[0023] In this technical solution, by attaching the cleaning end of the cleaning brush 13 to the outer side of the filter screen plate 12, during the rotation of the first shaft rod 14, the cleaning brush 13 can effectively clean the coal slag on the outer side of the filter screen plate 12.

[0024] When a gas-slag separation device for underground gas drainage in coal mines is in use, a filter screen plate 12 is vertically fixedly connected inside the gas outlet end of the separation housing 1, which can filter solid impurities such as coal slag in the gas. The staff can drive the valve plate 11 connected to the second shaft rod 16 and the third shaft rod 18 to rotate inside the slag discharge end of the separation housing 1 through the handwheel 19. When the valve plate 11 rotates to an inclined state, the coal slag inside the slag discharge end of the separation housing 1 can be discharged. At the same time, the second shaft rod 16 can drive the large bevel gear 17 to rotate. Through the meshing of the large bevel gear 17 and the second bevel gear 22, the first bevel gear 21 can be driven through the connecting rod 2. Through the meshing of the first bevel gear 21 and the small bevel gear 15, the cleaning brush 13 can be driven to rotate on the outer side of the filter screen plate 12 through the first shaft rod 14. Thus, during the slag discharge process of the separation housing 1, the coal slag on the outer side of the filter screen plate 12 can be automatically cleaned, which is convenient and fast.

Claims

1. A gas-slag separation device for gas extraction in coal mines, comprising a separation shell (1), characterized in that: The separation shell (1) is T-shaped, a filter screen plate (12) is vertically fixedly connected inside the gas outlet end of the separation shell (1), and a valve plate (11) is arranged inside the slag discharge end of the separation shell (1); A cleaning mechanism: used for discharging coal slag inside the separation shell (1) and cleaning the filter screen plate (12), the cleaning mechanism comprising a cleaning brush (13) and a connecting rod (2), the cleaning brush (13) being placed on a side of the filter screen plate (12) close to the air inlet of the separation shell (1), the middle part of the filter screen plate (12) being rotatably connected to a first shaft rod (14) via a bearing, one end of the first shaft rod (14) being fixedly connected to the middle part of the cleaning brush (13), and the middle parts of both sides of the valve plate (11) being horizontally fixedly installed with a second shaft rod (14). A shaft rod (16) and a third shaft rod (18), wherein the second shaft rod (16) is disposed on the outer side of the separation housing (1) and is fixedly mounted with a large bevel gear (17), the connecting rod (2) is disposed on the inner side of the separation housing (1) and is fixedly mounted with a first bevel gear (21), the first bevel gear (21) is meshed with a small bevel gear (15), and the connecting rod (2) is disposed on the outer side of the separation housing (1) and is fixedly mounted with a second bevel gear (22), the second bevel gear (22) is meshed with the large bevel gear (17).

2. The gas-slag separation device for gas extraction in coal mines according to claim 1, characterized in that: The size of the cleaning brush (13) matches that of the filter screen plate (12), and the cleaning end of the cleaning brush (13) fits the outer side of the filter screen plate (12).

3. The gas-slag separation device for gas extraction in coal mines according to claim 1, characterized in that: A protective shell (23) is fixedly connected to the outer side of the lower end of the separation housing (1), and the large bevel gear (17) and the second bevel gear (22) are placed on the inner side of the protective shell (23).

4. The gas-slag separation device for gas extraction in coal mines according to claim 1, characterized in that: The second shaft (16) and the third shaft (18) are rotatably connected to the inner walls on both sides of the slag discharge end of the separation shell (1) via sealed bearings, and a hand wheel (19) is fixedly mounted on one end of the third shaft (18) disposed outside the separation shell (1).

5. The gas-slag separation device for gas extraction in coal mines according to claim 1, characterized in that: The size of the first bevel gear (21) matches that of the small bevel gear (15), and the size of the second bevel gear (22) matches that of the large bevel gear (17).

6. The gas-slag separation device for gas extraction in underground coal mines according to claim 1, characterized in that: The connecting rod (2) is rotatably connected to the inner wall of the bottom end of the separation housing (1) via a sealed bearing, and the sizes of the first bevel gear (21) and the second bevel gear (22) match each other.

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