Gas extraction pump station for coal mining

Abstract

The utility model relates to the technical field of coal mining, and particularly discloses a gas extraction pump station for coal mining, which comprises a gas extraction pump communicated with the inside of a coal mine layer and used for extracting gas, and a collecting barrel communicated with the gas extraction pump and used for collecting the gas, a filtering assembly used for filtering small-particle impurities is further communicated between the air extracting pump and the coal mine layer, and the filtering assembly comprises a box communicated with the air extracting pump and the interior of the coal mine layer and a filtering piece detachably connected to the inner wall of the box and used for filtering the small-particle impurities. And small-particle impurities in the coal smoke are gathered in the air extracting pump, blockage is formed in the air extracting pump, and then the gas extracting pump cannot extract the gas.

Description

Technical Field

[0001] The present application relates to the technical field of coal mining, and specifically discloses a gas extraction pump station for coal mining. Background Art

[0002] Gas is formed by the decomposition of cellulose and organic matter by anaerobic bacteria in the early stages of ancient plants' accumulation into coal. It is a colorless, tasteless, and odorless gas that is insoluble in water, does not support combustion, and cannot sustain breathing. When it reaches a certain concentration, it can cause people to suffocate due to lack of oxygen, and can also cause combustion or explosion. Gas explosion is one of the main disasters in coal mines. During coal mining, a large amount of gas will be produced. Before mining, it is necessary to drill holes in the coal mine layer and then extract the gas in the mine hole.

[0003] In the prior art, the extraction of gas from coal mine layers is achieved by using a gas extraction pump station. The gas extraction pump station includes a temporary platform, a pump body arranged in the temporary platform, a power source for driving the pump body, a negative pressure creation arranged inside the pump body, and a gas discharge pipeline connected to the pump body. The pump body is mainly a vacuum pump, and the power source is mainly an electric motor. Negative pressure creation refers to the use of appropriate pistons, blades, or rotating technologies in the vacuum pump to create negative pressure or negative pressure fluid. When the electric motor drives the vacuum pump, the negative pressure formed inside the vacuum pump draws the gas in the coal mine layer to the ground through the gas discharge pipeline, and then The above method can extract the gas in the coal mine layer, reduce the amount of gas outflow during the mining process, and prevent the occurrence of gas explosions. However, the gas extracted by the vacuum pump in the coal mine contains, in addition to gas, a large amount of coal smoke. There are a large number of small particle impurities in the coal smoke. The small particle impurities are extracted into the vacuum pump. The small particle impurities accumulate in the extraction pump for a long time and block the vacuum pump, making the blades in the vacuum pump unable to rotate, that is, the vacuum pump cannot form negative pressure to extract the gas in the ore layer, and ultimately the gas extraction pump station cannot achieve the effect of extracting gas from the coal mine layer.

[0004] Therefore, in view of this, the inventor provides a gas extraction pump station for coal mining to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to solve the problem that when a conventional gas extraction pump station is in operation, small particles of impurities in coal smoke gather in the extraction pump, causing blockage in the extraction pump, thereby preventing the gas extraction pump from extracting gas.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a gas extraction pump station for coal mining, including an exhaust pump connected to the inside of a coal mine layer for extracting gas and a collecting bucket connected to the exhaust pump for collecting gas, characterized in that a filter assembly for filtering small particles of impurities is also connected between the exhaust pump and the coal mine layer, and the filter assembly includes a box connected to the exhaust pump and the inside of the coal mine layer and a filter element detachably connected to the inner wall of the box for filtering small particles of impurities, and a cleaning mechanism for cleaning the filter element is also provided in the box, and the cleaning mechanism is located on the side of the filter element away from the exhaust pump.

[0007] The principles and effects of this basic solution are:

[0008] 1. Compared with the prior art, the present invention provides a gas extraction pump station for coal mining, wherein the air inlet end of the vacuum pump is connected to the coal mine layer, a box is arranged between the coal mine layer and the vacuum pump, a cleaning plate is arranged in the box, and the air outlet end of the vacuum pump is connected to the collecting barrel, and the gas in the coal mine layer can be extracted by starting the vacuum pump, and the extracted gas is mixed with gas and coal smoke, and the extracted gas can pass through the cleaning plate, and the cleaning plate can filter out small particles of impurities in the coal smoke in the extracted gas, so that the small particles of impurities in the coal smoke adhere to the cleaning plate, and prevent the small particles of impurities from being extracted into the vacuum pump and blocking the vacuum pump, and avoid the small particles of impurities from adhering to the blades of the vacuum pump and affecting the rotation of the blades, which is beneficial to extracting the gas in the coal mine layer through the vacuum pump, reducing the gas content in the coal mine layer, and further facilitating the mining of the coal mine layer.

[0009] Furthermore, the filter element includes a mounting plate fixedly connected to the inner wall of the box, a fastening ring block detachably connected to the mounting plate and arranged on the side of the mounting plate away from the vacuum pump, and a filter block arranged between the fastening ring block and the mounting plate, the fastening ring block is provided with an annular groove for placing the filter block on the side close to the mounting plate, the mounting plate is provided with a through groove, and the filter block is provided with a plurality of filter holes, the aperture of the filter holes is smaller than the size of small particle impurities and larger than the size of the gas.

[0010] The arrangement of the filter block, the fastening ring block and the mounting plate can be achieved by clamping the cleaning plate in the annular groove of the fastening ring block, and then connecting the fastening ring block with the mounting plate to install the filter block in the box, which is beneficial to filtering small particle impurities.

[0011] Furthermore, the cleaning mechanism includes a first cleaning mechanism arranged in the box for cleaning the inner side of the filter hole and a second cleaning mechanism arranged in the box for cleaning the side of the filter block, and the fastening ring block has a rectangular through groove on one side close to the inner bottom surface of the box.

[0012] The arrangement of the rectangular through groove, the first cleaning mechanism and the second cleaning mechanism can separate the small particle impurities adhering to the filter block from the filter block through the first cleaning mechanism and the second cleaning mechanism, and then drop them to the bottom surface of the box through the rectangular through groove, thereby achieving the effect of cleaning the filter block.

[0013] Furthermore, the first cleaning mechanism includes a plurality of mounting blocks fixedly connected to the inner side surface of the fastening ring block, a first motor detachably connected to the outer side surface of the box, and a hammering assembly arranged on the side of the fastening ring block away from the filter block and driven by the first motor to hammer the mounting block, and a plurality of support seats for supporting the hammering assembly are arranged on the inner bottom surface of the box.

[0014] The arrangement of the mounting block, the first motor and the knocking assembly can start the first motor so that the first motor drives the knocking assembly to knock on the mounting block. The knocking of the knocking assembly on the mounting block will generate vibration, and the vibration on the mounting block can be transmitted to the filter block through the fastening ring block. The vibration of the filter block will shake the small particles of impurities adhered to the inner side of the filter hole to the surface of the mounting block or drop them onto the inner bottom surface of the box, thereby achieving the effect of cleaning the filter block.

[0015] The transmission gear of the present invention is connected with the transmission gear of the present invention on the one hand, and the transmission gear of the present invention is connected with the transmission gear of the present invention on the other hand, and the transmission gear of the present invention is connected with the transmission gear of the present invention on the other hand.

[0016] The transmission shaft, the active bevel gear, the driven bevel gear, the fixed gear, the transmission gear, the rotating block, the rotating rod and the knocking rod are arranged. The transmission shaft is driven to rotate by the first motor, and then the transmission shaft drives the active bevel gear to rotate, the active bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the connecting frame to rotate, and then the transmission gears at both ends of the connecting frame are rotated on the fixed gear. The transmission gear rotates, and the connection block is driven to rotate. The connection block is driven to rotate the rotating rod. The synchronous rotation of the rotating rod and the connecting block can drive the knocking rod to swing while the rotating rod rotates. The swing of the knocking rod can knock on the mounting block, so that the mounting block can vibrate.

[0017] Furthermore, the knocking rod includes a C-shaped rod fixedly connected to the connecting block and a hammer plate fixedly connected to the inner side of the C-shaped rod for knocking the mounting block, and a rectangular block is fixedly connected between the hammer plate and the C-shaped rod.

[0018] The arrangement of the C-shaped rod, the knocking plate and the rectangular block can drive the knocking plate to rotate and swing through the C-shaped rod and the rectangular block, so that the knocking plate can knock the installation block.

[0019] Furthermore, the second cleaning mechanism includes a cleaning plate fixedly connected to a side of the rotating rod close to the filter block and cleaning cotton adhered to a side of the cleaning plate close to the filter block, and the cleaning cotton abuts against a side surface of the cleaning plate.

[0020] The arrangement of the cleaning cotton and the cleaning plate can drive the cleaning plate to rotate through the rotating rod, thereby causing the cleaning cotton on the cleaning plate to rotate on the surface of the cleaning plate, thereby cleaning the surface of the cleaning plate and removing small particles of impurities adhering to the cleaning plate.

[0021] Furthermore, it also includes a container box, in which the plurality of vacuum pumps, the boxes and the collecting barrels are all arranged, and a crawler assembly is detachably connected to the bottom end surface of the container box.

[0022] The setting of the container box and the crawler assembly can drive the vacuum pump, box and collection barrel in the container box to move through the crawler assembly, which is conducive to instantly adjusting the position of the vacuum pump, box and collection barrel according to the different gas extraction locations in the coal mine.

[0023] Furthermore, there are at least three air pumps, the air inlet ends of several of the air pumps are connected to the box, and the air outlet ends of several of the air pumps are connected to the collection barrel.

[0024] Limiting the number of vacuum pumps is beneficial for the vacuum pumps to exhaust the gas in the coal mine layer, which is beneficial for increasing the flow rate of the gas in the coal mine layer, so that the gas in the coal mine layer can be quickly pumped into the collection barrel by the vacuum pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of a gas extraction pump station for coal mining proposed in an embodiment of the present application is shown;

[0027] Figure 2 Shows Figure 1 A top view of

[0028] Figure 3 Shows Figure 1 An internal cross-sectional view of

[0029] Figure 4 Shows Figure 3 Internal cross-sectional view of the middle box;

[0030] Figure 5 Shows Figure 4 Exploded diagram of

[0031] Figure 6 Shows Figure 5 A schematic diagram of the structure of the first cleaning mechanism;

[0032] Figure 7 Shows Figure 5 Exploded view of the filter element. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0034] The figure marks in the drawings of the specification include: vacuum pump 1, collecting barrel 2, box 3, mounting plate 4, fastening ring block 5, filter block 6, mounting block 7, first motor 8, transmission shaft 9, active bevel gear 10, driven bevel gear 11, fixed shaft 12, support seat 13, fixed gear 14, connecting frame 15, transmission gear 16, rotating rod 17, C-shaped rod 18, hammer plate 19, rectangular block 20, cleaning plate 21, cleaning cotton 22, methane sensor 23, container box 24, active wheel 25, driven wheel 26, second motor 27, connecting plate 28, connecting block 29, crawler track 30.

[0035] A gas extraction pump station for coal mining, for example Figure 1 , Figure 3 and Figure 7 As shown: it includes an air pump 1 connected to the inside of the coal mine layer for extracting gas and a collection bucket 2 connected to the air pump 1 for collecting gas. In this embodiment, the number of the air pumps 1 is three, the air inlet ends of the three air pumps 1 are all connected to the coal mine layer, and the air outlet ends of the three air pumps 1 are all connected to the collection bucket 2. The air pump 1 and the coal mine layer are also connected to a filter assembly for filtering small particle impurities. The filter assembly includes a box 3 connected to the air pump 1 and the inside of the coal mine layer and a filter for small particle impurities detachably connected to the inner wall of the box 3. The left side of the box 3 is connected to a filter for extracting gas from the coal mine layer. The air extraction pipeline of the box 3 is welded with a connecting pipeline on the right side, and three air intake pipelines connected to the air intake end of the air extraction pump 1 are welded on the connecting pipeline. The filter element includes a mounting plate 4 welded to the inner wall of the box 3, a fastening ring block 5 threadedly connected to the mounting plate 4 on the right side of the mounting plate 4, and a filter block 6 arranged between the fastening ring block 5 and the mounting plate 4. The filter block 6 is circular in shape, and an annular groove for placing the filter block 6 is provided on the left side of the fastening ring block 5. A through groove is provided on the mounting plate 4, and a plurality of filter holes are provided on the filter block 6. The aperture of the filter hole is smaller than the size of small particle impurities and larger than the size of the gas.

[0036] like Figure 5 As shown, a cleaning mechanism for cleaning the filter block 6 is also provided in the box 3, and the cleaning mechanism is located on the right side of the filter block 6. The cleaning mechanism includes a first cleaning mechanism provided in the box 3 for cleaning the inner side of the filter hole and a second cleaning mechanism provided in the box 3 for cleaning the side of the filter block 6. A rectangular through groove is opened on the side of the fastening ring block 5 close to the inner bottom surface of the box 3.

[0037] Specifically, Figure 3 , Figure 4 and Figure 5 As shown, the first cleaning mechanism includes two mounting blocks 7 welded on the inner side of the fastening ring block 5, a first motor 8 threadedly connected to the outer side of the box 3, and a hammer assembly arranged on the right side of the fastening ring block 5 and driven by the first motor 8 to hammer the mounting block 7. The hammer assembly includes a transmission shaft 9 arranged in the box 3 and coaxially connected to the output shaft of the first motor 8, a driving bevel gear 10 arranged in the box 3 and key-connected to the transmission shaft 9, and a driven bevel gear 11 meshing with the driving bevel gear 10. The output shaft of the first motor 8 A coupling is coaxially sleeved on the upper part, and the other end of the coupling is coaxially sleeved with the transmission shaft 9. A fixed shaft 12 is rotatably connected to the driven bevel gear 11. Two support seats 13 are welded on the inner bottom surface of the box 3, one of which is fixedly connected to the fixed shaft 12, and the other support seat 13 is rotatably connected to the transmission shaft 9. A fixed gear 14 is welded on the left side of the fixed shaft 12, and a connecting frame 15 is coaxially welded on the driven bevel gear 11. The two ends of the connecting frame 15 are rotatably connected to transmission gears 16 meshing with the fixed gear 14, such as Figure 6As shown, the eccentric parts of the side surfaces of the transmission gear 16 are rotatably connected with connecting blocks 29, the left side of the fixed gear 14 is rotatably connected with a rotating rod 17, a connecting shaft is welded to the left side of the fixed rod, a connecting through hole is opened in the middle of the rotating rod 17, the side of the connecting through hole is rotatably connected to the connecting shaft, the right side of the rotating rod 17 is rotatably connected to the fixed gear 14, rotating through holes are opened at both ends of the rotating rod 17, the connecting blocks 29 are rotatably connected to the rotating rod 17 through the rotating through holes, the left ends of the rotating rod 17 are provided with knocking rods for knocking the mounting block 7, the knocking rods are welded to the connecting blocks 29, the knocking rods include a C-shaped rod 18 welded to the connecting block 29 and a hammer plate 19 welded to the inner side of the C-shaped rod 18 for knocking the mounting block 7, and a rectangular block 20 is welded between the hammer plate 19 and the C-shaped rod 18.

[0038] like Figure 4 and Figure 5 As shown, the second cleaning mechanism includes a cleaning plate 21 welded to the left side of the rotating rod 17 and a cleaning cotton 22 adhered to the left side of the cleaning plate 21, the cleaning cotton 22 abuts against the side of the filter block 6, and a methane sensor 23 is also arranged in the box, the methane sensor 23 can detect the concentration of gas, the methane sensor 23 is electrically connected to the controller, the first motor 8 is connected to the controller, and a predetermined gas concentration value is set in the methane sensor 23.

[0039] Through the above structure, when the operator extracts gas, he starts the vacuum pump 1, and the gas extracted by the vacuum pump 1 can be filtered through the filter block 6 to remove small particle impurities mixed in the gas, so as to prevent the small particle impurities from entering the vacuum pump 1 and affecting the rotation of the blades in the vacuum pump 1, so that the gas extraction pump station cannot achieve the effect of extracting gas from the coal mine layer. In the process of extracting gas, the small particle impurities in the gas will adhere to the filter block 6 and block the filter block 6, and the gas extracted by the vacuum pump 1 will accumulate in the box 3, and the box 3 becomes higher, at this time the methane sensor 23 detects that the concentration of the gas is higher than the set gas concentration value, the methane sensor 23 will transmit the data higher than the set gas concentration value to the controller, the controller will control the first motor 8 to start, the first motor 8 starts to drive the transmission shaft 9 to rotate, and then the transmission shaft 9 drives the active bevel gear 10 to rotate, the active bevel gear 10 drives the driven bevel gear 11 to rotate, the driven bevel gear 11 rotates and drives the connecting frame 15 to rotate, and then the transmission gears 16 at both ends of the connecting frame 15 are rotated on the fixed gear 14, the transmission gear 16 rotates, the transmission gear 16 rotates and drives the connecting block 29 to rotate, the connecting block 29 rotates and drives the rotating rod 17 to rotate, the rotating rod 17 and the connecting block 29 rotate synchronously and can drive the knocking rod to swing while the rotating rod 17 rotates, the knocking rod swings and can knock the mounting block 7, so that the mounting block 7 can vibrate, the vibration on the mounting block 7 can be transmitted to the filter block 6 through the fastening ring block 5, the filter block 6 vibration will filter the small particles adhering to the inner side of the filter hole. The impurities adhere to the surface of the mounting block 7 or fall onto the inner bottom surface of the box 3 by shaking, so as to clean the small particles of impurities adhered to the inner side of the cleaning plate. At this time, the rotating rod 17 drives the cleaning plate 21 to rotate, and then the cleaning cotton 22 on the cleaning plate 21 rotates on the surface of the cleaning plate, and at the same time, the surface of the filter block 6 is cleaned, so that the small particles of impurities on the filter block 6 fall onto the inner bottom surface of the box 3. In the above manner, the filter block 6 is cleaned, and the gas can be extracted into the vacuum pump 1 through the filter holes on the filter block 6.

[0040] like Figure 2 and Figure 3As shown, it also includes a container box 24, three vacuum pumps 1, box 3 and collection barrel 2 are all arranged in the container box 24, the left side of the container box 24 is provided with a through groove, the shape of the through groove is circular, the size of the through groove is smaller than the size of the filter block, and a crawler assembly is detachably connected to the bottom end surface of the container box 24, and the crawler assembly includes two driving wheels 25, two driven wheels 26 and two crawlers 30 respectively sleeved on the driving wheels 25 and the driven wheels 26, and the driving wheels 25 are keyed to the second motor 27 A connecting plate 28 is provided on the top surface of the second motor 27, and the connecting plate 28 is rotatably connected to the side surfaces of the driving wheel 25 and the driven wheel 26 respectively. The bottom end surface of the container box 24 is threadedly connected to the top surface of the connecting plate 28. The setting of the container box 24 and the crawler 30 plate can drive the vacuum pump 1, the box 3 and the collecting bucket 2 in the container box 24 to move through the crawler 30 plate, which is conducive to instantly adjusting the positions of the vacuum pump 1, the box 3 and the collecting bucket 2 according to the different positions of gas extraction in the coal mine.

[0041] When the utility model is in use, the operator first moves the container box 24 to the corresponding gas extraction point through the crawler assembly, and then connects the three vacuum pumps 1 with the coal mine layer from which gas needs to be extracted, starts the three vacuum pumps 1, and extracts the gas in the coal mine layer into the collection barrel 2 through the three vacuum pumps 1. At this time, the methane sensor 23 will transmit the methane concentration detected in the box 3 to the controller. When the gas concentration received by the controller is higher than the preset value of the methane concentration in the controller, the controller will automatically start the first motor 8, so that the first motor 8 drives the cleaning cotton 22 and the knocking rod to complete the cleaning of the filter holes on the connecting plate 28. When the gas concentration received by the controller is lower than the preset value of methane in the controller, the controller will control the first motor 8 to stop rotating.

[0042] The utility model can solve the problem that when a conventional gas extraction pump station is in operation, small particles of impurities in coal smoke gather in the gas extraction pump 1, causing blockage in the gas extraction pump 1, thereby preventing the gas extraction pump from extracting gas.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gas extraction pump station for coal mining, comprising a gas extraction pump connected to the inside of a coal mine layer for extracting gas and a collection bucket connected to the gas extraction pump for collecting gas, characterized in that: A filter assembly for filtering small particles of impurities is also connected between the vacuum pump and the coal mine layer. The filter assembly includes a box connected to the vacuum pump and the inside of the coal mine layer and a filter element detachably connected to the inner wall of the box for filtering small particles of impurities. A cleaning mechanism for cleaning the filter element is also provided in the box, and the cleaning mechanism is located on the side of the filter element away from the vacuum pump.

2. A gas extraction pump station for coal mining according to claim 1, characterized in that: The filter element includes a mounting plate fixedly connected to the inner wall of the box, a fastening ring block detachably connected to the mounting plate on the side of the mounting plate away from the vacuum pump, and a filter block arranged between the fastening ring block and the mounting plate, the fastening ring block is provided with an annular groove for placing the filter block on the side close to the mounting plate, the mounting plate is provided with a through groove, and the filter block is provided with a plurality of filter holes, the aperture of the filter holes is smaller than the size of small particle impurities and larger than the size of the gas.

3. A gas extraction pump station for coal mining according to claim 2, characterized in that: The cleaning mechanism comprises a first cleaning mechanism arranged in the box for cleaning the inner side of the filter hole and a second cleaning mechanism arranged in the box for cleaning the side of the filter block. The fastening ring block is provided with a rectangular through groove on one side close to the inner bottom surface of the box.

4. A gas extraction pump station for coal mining according to claim 3, characterized in that: The first cleaning mechanism includes a plurality of mounting blocks fixedly connected to the inner side surface of the fastening ring block, a first motor detachably connected to the outer side surface of the box, and a hammer assembly arranged on the side of the fastening ring block away from the filter block and driven by the first motor to hammer the mounting block, and a plurality of support seats for supporting the hammer assembly are arranged on the inner bottom surface of the box.

5. A gas extraction pump station for coal mining according to claim 4, characterized in that: The driving mechanism that the cam is in step with the gear shift is located in the driving mechanism, and the driving mechanism is located in the driving mechanism. The cam is connected with the gear by the gear shift coupling, and the gear is connected with the gear train coupling.

6. A gas extraction pump station for coal mining according to claim 5, characterized in that: The knocking rod comprises a C-shaped rod fixedly connected to the connecting block and a hammer plate fixedly connected to the inner side of the C-shaped rod for knocking the mounting block, and a rectangular block is fixedly connected between the hammer plate and the C-shaped rod.

7. A gas extraction pump station for coal mining according to claim 5, characterized in that: The second cleaning mechanism comprises a cleaning plate fixedly connected to a side of the rotating rod close to the filter block and cleaning cotton adhered to a side of the cleaning plate close to the filter block, wherein the cleaning cotton abuts against a side surface of the cleaning plate.

8. A gas extraction pump station for coal mining according to claim 6 or 7, characterized in that: It also includes a container box, in which the plurality of vacuum pumps, the boxes and the collecting barrels are all arranged, and a crawler assembly is detachably connected to the bottom end surface of the container box.

9. A gas extraction pump station for coal mining according to claim 1, characterized in that: There are at least three air pumps, the air inlet ends of several of the air pumps are connected to the box, and the air outlet ends of several of the air pumps are connected to the collection barrel.

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