Gas extraction equipment and use method

Abstract

The invention provides gas extraction equipment which comprises a bottom frame, and an extraction pump is arranged above the bottom frame. An extraction pump inlet is connected with one end of a first pipeline, the other end of the first pipeline is connected with one end of a second pipeline through a rotary joint, the other end of the second pipeline is connected with one end of a barrel, and a screen is arranged at the other end of the barrel. Two annular side plates are arranged on the side wall of the second pipeline at intervals, an air bag is arranged between the two annular side plates, an air inlet is formed in one side plate, an air pump is arranged on the side wall of the second pipeline, two air outlets are formed in the air pump, and one air outlet is connected with the air inlet; a cleaning assembly is arranged in the cylinder body, and the other air outlet is connected with the cleaning assembly through an air conveying hose; an outlet of the extraction pump is connected with the dust collecting device through a first connecting pipe. The dust collecting device is connected with one end of the three-way connector through a second connecting pipe. The other two ends of the three-way connector face the outside and are connected with the gas tank. The gas extraction equipment provided by the invention can be used for efficiently extracting and collecting gas in a coal mine well.

Description

Technical Field

[0001] The present invention relates to the technical field of gas extraction, and in particular to a gas extraction device and a use method thereof. Background Art

[0002] Gas mostly refers to natural gas, which is a large amount of gas generated by plants during the coal formation process, also known as coalbed methane. Humic organic matter can generate gas after being decomposed by bacteria; then, as the depth of sediment burial increases, over a long geological period, the coal seams are subjected to high temperature and high pressure, entering the carbonization and metamorphism stage of coal, the volatile matter in the coal decreases, the fixed carbon increases, and a large amount of gas is generated, which causes a large number of safety hazards in the coal mining process. When mining coal, it is necessary to extract the gas inside the coal mine to reduce the gas concentration in the air.

[0003] Therefore, it is necessary to design a new gas extraction equipment and use method to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a gas extraction device and a method for using the gas extraction device in view of the deficiencies in the prior art. The specific scheme is as follows: A gas extraction device comprises a base frame, a plurality of elastic supporting legs are provided at the bottom of the base frame, a universal wheel with a locking mechanism is provided at the bottom of the elastic supporting legs, and an extraction pump for extracting gas is provided above the base frame; the inlet of the extraction pump is connected to one end of pipeline one, the other end of the pipeline one is connected to one end of pipeline two through a rotating joint, the other end of the pipeline two is connected to one end of a cylinder, and a screen is provided at the other end of the cylinder; two annular side plates are provided at intervals on the side wall of pipeline two, an air bag is provided between the two annular side plates, one of the side plates is provided with an air inlet, an air pump is provided on the side wall of pipeline two, and two exhaust ports are provided on the air pump, one of the exhaust ports is connected to the air inlet, and the exhaust port corresponding to the air inlet is provided at the exhaust port A solenoid valve 1 is provided, and another exhaust port is provided with a solenoid valve 2; a cleaning component for cleaning the screen is provided in the cylinder, and the other exhaust port is connected to the cleaning component through a gas hose; the outlet of the extraction pump is connected to the dust collecting device through a connecting pipe 1, and the dust collecting device is connected to one end of a three-way joint through a connecting pipe 2; the other two ends of the three-way joint are respectively facing the outside world and connected to the inlet of the gas tank; solenoid valve 3, solenoid valve 4, and solenoid valve 5 are respectively provided at the three ends of the three-way joint corresponding to the connecting pipe 1, the outside world, and the inlet of the gas tank; the extraction pump, the air pump, the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, the solenoid valve 4, and the solenoid valve 5 are all electrically connected to the controller arranged on the base frame.

[0005] Based on the above, the cleaning component includes a cylindrical shell fixed in the cylinder, a rotating shaft is provided at the axial position of the shell that passes through and rotates, an air inlet is provided on the side wall of the shell, the direction of the air inlet deviates from the axis of the shell, an air outlet connected to the air supply hose is provided at the end of the shell, a plurality of fan blades are provided on the axis located in the shell, the rotating shaft passes through the screen and is rotatably connected to it, and a cleaning brush for the screen is provided on the rotating shaft.

[0006] Based on the above, an electric push rod electrically connected to the controller is provided in the second pipe, and a conical head is provided at the telescopic end of the electric push rod. A plurality of positioning rods are provided through the side wall of the second pipe sliding along a certain annular track. The inner end of the positioning rod located at the second pipe is provided with an inclined surface fitting with the conical head. The outer end of the positioning rod is sharp, and an annular plate is provided on the positioning rod. The positioning rod is also provided with a tension spring that applies thrust to the annular plate, and the two ends of the tension spring are respectively in contact with the inner wall of the second pipe and the annular plate.

[0007] Based on the above, the dust collecting device includes a box body, a partition is provided in the box body, a cyclone separator is penetrated through the partition, the air inlet of the cyclone separator is connected to the connecting pipe one, an exhaust port for connecting to the connecting pipe two is provided at the top of the box body, and a slag discharge port is provided at the bottom of the box body.

[0008] Based on the above, a pull-out filter assembly is provided in the box above the partition.

[0009] Based on the above, a plurality of dust shields are also provided in the cylinder.

[0010] According to the method for using the above-mentioned gas extraction equipment, it includes the following steps: Step 1: When gas extraction is required, first extend the cylinder into the well, then open solenoid valve 1, close solenoid valve 2, start the air pump to inflate the airbag, make the airbag fit the inner wall of the well, and then close solenoid valve 1; Step 2: Then start the electric push rod, so that the telescopic end of the electric push rod extends out, and then the end of the positioning rod is inserted into the side wall of the well to achieve positioning; Step 3, then open the solenoid valve 3 and the solenoid valve 5, close the solenoid valve 4, and start the extraction pump to start extracting gas; Step 4: After a period of extraction, the screen may be clogged with dust. At this time, open solenoid valve 2 and solenoid valve 4, close solenoid valve 5, and then start the air pump for 10-15 seconds. The airflow enters the housing through the air hose, blows on the fan blades, and the shaft rotates accordingly. The cleaning brush cleans the screen, and then the airflow in the housing is discharged and finally discharged to the outside through the three-way joint. Step 5: The controller then closes the solenoid valve 2 and the solenoid valve 4, and opens the solenoid valve 5 to continue extraction; Step 6: After the extraction is completed, open the solenoid valve 1 to discharge the gas in the airbag, and control the telescopic end of the electric push rod to retract so that the end of the positioning rod is separated from the inner wall of the well.

[0011] The present invention has outstanding substantive features and significant progress compared to the prior art. Specifically, the present invention has the following advantages: The gas extraction equipment provided by the present invention can ensure efficient extraction of gas in a coal mine and prevent pipeline blockage during gas extraction. The structural design is ingenious and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the new type of use.

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure at point A in the middle.

[0014] Figure 3 yes Figure 1 Schematic diagram of the structure at point B in the middle.

[0015] Figure 4 It is a structural schematic diagram of the dust collecting device in the present invention.

[0016] In the figure: 1. base frame; 2. elastic support legs; 3. universal wheels; 4. extraction pump; 5. pipeline 1; 6. rotary joint; 8. pipeline 2; 9. electric push rod; 10. conical head; 11. positioning rod; 12. annular plate; 13. tension spring; 14. air pump; 15. annular side plate; 16. air bag; 17. air inlet; 18. air hose; 19. cylinder; 20. screen; 21. shell; 22. rotating shaft; 23. Air inlet; 24. Air outlet; 25. Fan blades; 26. Cleaning brush; 27. Dust shield; 28. Connecting pipe one; 29. ​​Dust collecting device; 29-1. Box body; 29-2. Partition; 29-3. Cyclone separator; 29-4. Slag discharge port; 29-5. Exhaust port; 29-6. Filter assembly; 30. Connecting pipe two; 31. Three-way connector; 32. Gas tank; 33. Controller; 34. Hoistway. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific implementation methods. Example

[0018] like Figure 1-4As shown, the present invention provides a gas extraction device, including a base frame 1, a plurality of elastic support legs 2 are provided at the bottom of the base frame 1, a universal wheel 3 with a locking mechanism is provided at the bottom of the elastic support leg 2, and an extraction pump 4 for extracting gas is provided above the base frame 1; the inlet of the extraction pump 4 is connected to one end of a pipe 5, the other end of the pipe 5 is connected to one end of a pipe 8 through a rotary joint 6, the other end of the pipe 8 is connected to one end of a cylinder 19, and a screen 20 is provided at the other end of the cylinder 19; two annular side plates 15 are provided at intervals on the side wall of the pipe 8, an air bag 16 is provided between the two annular side plates 15, one of the side plates is provided with an air inlet 17, an air pump 14 is provided on the side wall of the pipe 8, and two exhaust ports are provided on the air pump 14, one of the exhaust ports is connected to the air inlet 17, corresponding to the air inlet 1 A solenoid valve 1 is provided at the exhaust port of 7, and a solenoid valve 2 is provided at another exhaust port; a cleaning component for cleaning the screen 20 is provided in the cylinder 19, and the other exhaust port is connected to the cleaning component through a gas hose 18; the outlet of the extraction pump 4 is connected to the dust collecting device 29 through a connecting pipe 1 28, and the dust collecting device 29 is connected to one end of a three-way joint 31 through a connecting pipe 2 30; the other two ends of the three-way joint 31 are respectively facing the outside world and connected to the inlet of a gas tank 32; solenoid valve 3, solenoid valve 4, and solenoid valve 5 are respectively provided at the three ends of the three-way joint 31 corresponding to the connecting pipe 1 28, the outside world, and the inlet of the gas tank 32; the extraction pump 4, the air pump 14, the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, the solenoid valve 4, and the solenoid valve 5 are all electrically connected to the controller 33 arranged on the base frame 1.

[0019] The above-mentioned cleaning component includes a cylindrical shell 21 fixed in the cylinder 19, and a rotating shaft 22 is provided at the axial position of the shell 21 to penetrate and rotate. An air inlet 23 is provided on the side wall of the shell 21, and the direction of the air inlet 23 deviates from the axis of the shell 21. An air outlet 24 connected to the air supply hose 18 is provided at the end of the shell 21, and a plurality of fan blades 25 are provided on the axis inside the shell 21. The rotating shaft 22 passes through the screen 20 and is rotatably connected thereto, and a cleaning brush 26 for the screen 20 is provided on the rotating shaft 22.

[0020] An electric push rod 9 electrically connected to the controller 33 is provided in the above-mentioned pipe 2 8, and a conical head 10 is provided at the telescopic end of the electric push rod 9. A plurality of positioning rods 11 are provided to slide through the side wall of the pipe 2 8 along a certain annular track. The positioning rod 11 is located at the inner end of the pipe 2 8 and is provided with an inclined surface that fits with the conical head 10. The outer end of the positioning rod 11 is sharp, and an annular plate 12 is provided on the positioning rod 11. The positioning rod 11 is also sleeved with a tension spring 13 that applies thrust to the annular plate 12, and the two ends of the tension spring 13 are respectively in contact with the inner wall of the pipe 2 8 and the annular plate 12.

[0021] The dust collecting device 29 is used to filter the dust carried by the airflow during the gas extraction process, and includes a box body 29-1. A partition 29-2 is provided inside the box body 29-1. A cyclone separator 29-3 is penetrated through the partition 29-2. The air inlet of the cyclone separator 29-3 is connected to the connecting pipe 1 28. An exhaust port 29-5 for connecting to the connecting pipe 2 30 is provided at the top of the box body 29-1, and a slag discharge port 29-4 is provided at the bottom of the box body 29-1.

[0022] A pull-out filter assembly 29-6 is provided above the partition plate 29-2 in the box body 29-1.

[0023] A plurality of dust shielding plates 27 are also provided in the cylinder 19 .

[0024] According to the method for using the above-mentioned gas extraction equipment, it includes the following steps: Step 1: When gas extraction is required, first extend the cylinder 19 into the well 34, then open the solenoid valve 1, close the solenoid valve 2, start the air pump 14 to inflate the airbag 16, make the airbag 16 fit the inner wall of the well 34, and then close the solenoid valve 1; Step 2, then start the electric push rod 9, so that the telescopic end of the electric push rod 9 extends, and then the end of the positioning rod 11 is inserted into the side wall of the well 34 to achieve positioning; Step 3, then open the solenoid valve 3 and the solenoid valve 5, close the solenoid valve 4, and start the extraction pump 4 to start extracting gas; Step 4: After a period of extraction, the screen 20 may be clogged with dust. At this time, open the solenoid valve 2 and the solenoid valve 4, close the solenoid valve 5, and then start the air pump 14 for 10-15 seconds. The airflow enters the housing 21 through the air hose 18, blows on the fan blades 25, and the shaft 22 rotates accordingly. The cleaning brush 26 cleans the screen 20, and then the airflow in the housing 21 is discharged and finally discharged to the outside through the three-way joint 31. Step 5: Then the controller 33 closes the electromagnetic valve 2 and the electromagnetic valve 4, and opens the electromagnetic valve 5 to continue extraction; Step 6: After the extraction is completed, open the electromagnetic valve 1 to discharge the gas in the airbag 16, and control the telescopic end of the electric push rod 9 to retract, so that the end of the positioning rod 11 is separated from the inner wall of the well 34.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A gas extraction device, characterized in that: The invention comprises a base frame (1), the bottom of the base frame (1) is provided with a plurality of elastic support legs (2), the bottom of the elastic support legs (2) is provided with a universal wheel (3) with a locking mechanism, and a gas extraction pump (4) is provided above the base frame (1); the inlet of the extraction pump (4) is connected to one end of a pipe (5), the other end of the pipe (5) is connected to one end of a pipe (8) through a rotary joint (6), the other end of the pipe (8) is connected to one end of a cylinder (19), and the other end of the cylinder (19) is provided with a screen (20); two annular side plates (15) are provided at intervals on the side wall of the pipe (8), an air bag (16) is provided between the two annular side plates (15), one of the side plates is provided with an air inlet (17), the side wall of the pipe (8) is provided with an air pump (14), the air pump (14) is provided with two exhaust ports, one of the exhaust ports is connected to the air inlet (17), and the corresponding exhaust port (17) is connected to the air inlet (17). ) is provided with a solenoid valve 1 at the exhaust port, and a solenoid valve 2 is provided at the other exhaust port; a cleaning component for cleaning the screen (20) is provided in the cylinder (19), and the other exhaust port is connected to the cleaning component via an air supply hose (18); the outlet of the extraction pump (4) is connected to a dust collecting device (29) via a connecting pipe 1 (28), and the dust collecting device (29) is connected to one end of a three-way joint (31) via a connecting pipe 2 (30); the other two ends of the three-way joint (31) are respectively facing the outside and connected to the inlet of a gas tank (32); the three ends of the three-way joint (31) corresponding to the connecting pipe 1 (28), the outside and the inlet of the gas tank (32) are respectively provided with a solenoid valve 3, a solenoid valve 4 and a solenoid valve 5; the extraction pump (4), the air pump (14), the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, the solenoid valve 4 and the solenoid valve 5 are all electrically connected to a controller (33) arranged on the base frame (1).

2. The gas extraction equipment according to claim 1, characterized in that: The cleaning assembly comprises a cylindrical shell (21) fixedly arranged in the cylinder (19); a rotating shaft (22) is provided at an axial position of the shell (21) passing through and rotatably arranged thereon; an air inlet (23) is provided on a side wall of the shell (21); the direction of the air inlet (23) deviates from the axial line of the shell (21); an air outlet (24) connected to the air delivery hose (18) is provided at the end of the shell (21); a plurality of fan blades (25) are provided on the axial line in the shell (21); the rotating shaft (22) passes through the screen (20) and is rotatably connected thereto; and a cleaning brush (26) for the screen (20) is provided on the rotating shaft (22).

3. The gas extraction equipment according to claim 2, characterized in that: An electric push rod (9) electrically connected to the controller (33) is provided in the second pipe (8), and a conical head (10) is provided at the telescopic end of the electric push rod (9). A plurality of positioning rods (11) are provided on the side wall of the second pipe (8) so as to slide along a certain annular track and penetrate the side wall. The positioning rod (11) is located at the inner end of the second pipe (8) and is provided with an inclined surface that fits with the conical head (10). The outer end of the positioning rod (11) is sharp. An annular plate (12) is provided on the positioning rod (11). A tension spring (13) for applying a thrust to the annular plate (12) is also sleeved on the positioning rod (11), and the two ends of the tension spring (13) are respectively in contact with the inner wall of the second pipe (8) and the annular plate (12).

4. The gas extraction equipment according to claim 3, characterized in that: The dust collecting device (29) comprises a box body (29-1), a partition (29-2) is provided in the box body (29-1), a cyclone separator (29-3) is provided through the partition (29-2), an air inlet of the cyclone separator (29-3) is connected to the first connecting pipe (28), an exhaust port (29-5) for connecting to the second connecting pipe (30) is provided at the top of the box body (29-1), and a slag discharge port (29-4) is provided at the bottom of the box body (29-1).

5. The gas extraction equipment according to claim 4, characterized in that: A pull-out filter assembly (29-6) is provided in the box body (29-1) above the partition plate (29-2).

6. The gas extraction equipment according to claim 1, characterized in that: A plurality of dust shielding plates (27) are also provided in the cylinder (19).

7. The method for using the gas extraction equipment according to claim 5 or 6, characterized in that The following steps are involved: Step 1: When gas extraction is required, first extend the cylinder (19) into the well (34), then open the solenoid valve 1, close the solenoid valve 2, start the air pump (14) to inflate the air bag (16), so that the periphery of the air bag (16) fits the inner wall of the well (34), and then close the solenoid valve 1; Step 2, then start the electric push rod (9) so that the telescopic end of the electric push rod (9) extends, thereby causing the end of the positioning rod (11) to penetrate into the side wall of the well (34) to achieve positioning; Step 3, then open the solenoid valve 3 and the solenoid valve 5, close the solenoid valve 4, and start the extraction pump (4) to start extracting gas; Step 4: After a certain period of extraction, the screen (20) may be clogged with dust. At this time, the electromagnetic valve 2 and the electromagnetic valve 4 are opened, and the electromagnetic valve 5 is closed. Then, the air pump (14) is started for 10-15 seconds. The airflow enters the housing (21) through the air delivery hose (18). The airflow blows on the fan blades (25), and the shaft (22) rotates accordingly. The cleaning brush (26) cleans the screen (20), and then the airflow in the housing (21) is discharged and finally discharged to the outside through the three-way joint (31); Step 5: The controller (33) then closes the electromagnetic valve 2 and the electromagnetic valve 4, and opens the electromagnetic valve 5 to continue extraction; Step 6: After the extraction is completed, open the electromagnetic valve 1 to discharge the gas in the air bag (16), and control the telescopic end of the electric push rod (9) to retract, so that the end of the positioning rod (11) is separated from the inner wall of the well (34).

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