CN110500129B - Gas extraction water drainage device and using method thereof - Google Patents
Gas extraction water drainage device and using method thereof Download PDFInfo
- Publication number
- CN110500129B CN110500129B CN201910850780.1A CN201910850780A CN110500129B CN 110500129 B CN110500129 B CN 110500129B CN 201910850780 A CN201910850780 A CN 201910850780A CN 110500129 B CN110500129 B CN 110500129B
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- water
- storage tank
- pipe
- gas extraction
- shaped pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Abstract
The invention provides a gas extraction drainage device and a using method thereof, wherein the gas extraction drainage device comprises a gas extraction pipe, a funnel three-way pipe, a flange connecting disc, a U-shaped pipe, an airtight plug, an auxiliary fixing frame structure, an anti-skidding blind hole, a water liquid storage device, a valve, a mounting plate, a left switch, a right switch and an adjustable auxiliary support structure, wherein the funnel three-way pipe is arranged at the middle position of the inner side of the gas extraction pipe through a flange connecting disc bolt; the U-shaped pipe is welded at the lower part of the funnel three-way pipe; the air-tight plug is inserted at the right side of the upper part of the U-shaped pipe; the auxiliary fixing frame structure is sleeved on the upper part of the outer side of the U-shaped pipe. The fixing hoop is sleeved on the outer side of the U-shaped pipe, so that a bolt and a nut can be screwed on the fixing side plate when the water storage tank is used, and the water storage tank is convenient to mount; the longitudinal clapboard is longitudinally embedded in the middle position inside the water storage tank, so that the water in the left side and the right side of the water storage tank can be conveniently separated when the water storage tank is used.
Description
Technical Field
The invention belongs to the technical field of gas extraction, and particularly relates to a gas extraction water drainer and a use method thereof.
Background
Because the pressure in the gas extraction pipeline is in a negative pressure state, water in the coal seam can be extracted into the extraction pipeline to form accumulated water when the gas is extracted, so that the accommodating space of the gas in the extraction pipeline is reduced, and the accumulated water in the extraction pipeline needs to be discharged periodically.
However, the prior art has the problems that the water tank is inconvenient to be fixedly installed, and the water in the water tank is not separated and the auxiliary supporting effect on the bottom of the water tank is not realized.
Therefore, the invention of the gas extraction water drainage device and the use method thereof is very necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides a gas extraction water discharger and a using method thereof, and aims to solve the problems that the prior art is inconvenient to fixedly install a water tank, does not separate water in the water tank and does not play an auxiliary supporting role on the bottom of the water tank; the U-shaped pipe is welded at the lower part of the funnel three-way pipe; the air-tight plug is inserted at the right side of the upper part of the U-shaped pipe; the auxiliary fixing frame structure is sleeved at the upper part of the outer side of the U-shaped pipe; the anti-skid blind hole is formed in the left side of the front part of the U-shaped pipe; the water liquid storage device is arranged at the lower part of the outer side of the U-shaped pipe and is arranged at the lower part of the auxiliary fixing frame structure; the valve is in threaded connection with the upper part of the left side of the U-shaped pipe; the left switch and the right switch are respectively installed on the left side of the installation plate through screws; the adjustable auxiliary support structure is arranged at the lower part of the water liquid storage device; the water liquid storage device comprises a water storage tank, a longitudinal partition plate, a U-shaped water guide pipe, a left water pump and a right water pump, wherein the U-shaped water guide pipe is inserted at the lower part of the front side of the water storage tank; the left water pump and the right water pump are mounted at the lower part of the front side of the water storage tank through screws and are respectively communicated with the U-shaped water guide pipe at the left side and the right side; the mounting plate is mounted at the lower part of the left side of the water storage tank through screws.
Preferably, the auxiliary fixing frame structure comprises two fixing hoops, a fixing side plate, a bolt and a nut, a protection pad and a positioning bolt, the fixing hoops are sleeved on the outer side of the U-shaped pipe, and the fixing hoops are welded on the upper part of the left side of the water storage tank; the fixed side plates are welded on the left side and the right side of the fixed hoop; the bolt and the nut are in threaded connection with the upper side and the lower side of the fixed side plate; the positioning bolt is in threaded connection with the upper part and the lower part of the front side of the fixed hoop.
Preferably, the adjustable auxiliary support structure comprises a support sleeve, a longitudinal support rod, a puller bolt, a positioning sleeve, a positioning inserted bar and an anti-skid support leg, wherein the longitudinal support rod is inserted at the lower part of the inner side of the support sleeve; the jacking bolt is in threaded connection with the connecting position of the front side of the supporting sleeve and the longitudinal strut; the positioning sleeve is welded at the middle lower part of the longitudinal support rod; the positioning inserted bar is inserted in the lower part of the inner side of the positioning sleeve; the antiskid support legs are glued to the lower parts of the positioning insertion rods.
Preferably, the fixed hoop is sleeved outside the U-shaped pipe.
Preferably, the support sleeve is welded at the four corners of the lower part of the water storage tank.
Preferably, the anti-skid support legs are further provided with buffer springs and limiting ropes, and the buffer springs are sleeved on the outer sides of the positioning sleeves and the positioning insertion rods.
Preferably, the upper end screws of the limiting rope are arranged on the left side and the right side of the lower part of the longitudinal supporting rod, and the lower end screws of the limiting rope are arranged on the left side and the right side of the upper part of the anti-skidding supporting leg.
Preferably, the middle position of the U-shaped water guide pipe is further in threaded connection with an adjusting valve.
Preferably, the longitudinal partition is longitudinally embedded in the middle position inside the water storage tank.
Preferably, the protective pad is glued on the inner side of the fixed hoop, and the protective pad is a rubber pad with the thickness of three to five millimeters.
Preferably, the bottom section of the anti-skid support leg is semicircular, and the anti-skid support leg is a rubber support leg.
Preferably, the left side switch is electrically connected with the left side water pump, the right side switch is electrically connected with the right side water pump, and the left side water pump and the right side branch pump respectively adopt water pumps with the model number of RGB 15-10.
The gas extraction water drainer and the use method thereof concretely comprise the following steps:
the method comprises the following steps: sealing two ends of the U-shaped pipe, closing a valve on the left side of the U-shaped pipe, and inserting an airtight plug on the right side of the upper part of the U-shaped pipe;
step two: the right side of the U-shaped pipe is flooded with water, the right side of the water storage tank is filled with water, and the air-tight plug is flooded with water;
step three: when the water column in the U-shaped pipe does not rise to discharge water liquid, the switch on the right side is turned on to supply power to the water pump on the right side, so that the water liquid on the right side of the water storage tank is pumped to the left side of the water storage tank by the U-shaped water guide pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. in the invention, the fixing hoop is sleeved on the outer side of the U-shaped pipe, so that the bolt and the nut can be screwed on the fixing side plate when in use, and the water storage tank is convenient to mount.
2. In the invention, the longitudinal clapboard is longitudinally embedded in the middle position in the water storage tank, which is beneficial to conveniently separating water liquid on the left side and the right side in the water storage tank when in use.
3. In the invention, the support sleeves are welded at the four corners of the lower part of the water storage tank, so that the bottom of the water storage tank can be conveniently supported in an auxiliary manner.
4. In the invention, the protective pad is glued on the inner side of the fixed hoop, and the protective pad adopts a rubber pad with the thickness of three to five millimeters, so that the U-shaped pipe can be prevented from being damaged by the fixed hoop when in use.
5. In the invention, the anti-skid support legs are also provided with the buffer springs and the limiting ropes, and the buffer springs are sleeved outside the positioning sleeves and the positioning insertion rods, so that the bottom of the adjustable auxiliary support structure can be conveniently buffered when the anti-skid support legs are used.
6. In the invention, the upper end screws of the limiting rope are arranged on the left side and the right side of the lower part of the longitudinal support rod, and the lower end screws of the limiting rope are arranged on the left side and the right side of the upper part of the anti-skidding support leg, so that the limiting effect on the buffer spring is facilitated when the anti-skidding support leg is used, and the buffer spring is prevented from ejecting the positioning inserted rod out of the inner side of the positioning sleeve.
7. According to the adjustable auxiliary support structure, the bottom section of each anti-skidding support leg is semicircular, and the anti-skidding support legs are rubber support legs, so that the anti-skidding effect of the adjustable auxiliary support structure when the adjustable auxiliary support structure is in contact with the ground can be improved when the adjustable auxiliary support structure is used.
8. In the invention, the middle position of the U-shaped water guide pipe is also in threaded connection with the regulating valve, which is favorable for preventing water from flowing from the U-shaped water guide pipe when water is not required to be guided.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the auxiliary fixing frame structure of the present invention.
FIG. 3 is a schematic structural diagram of an aqueous liquid storage device according to the present invention.
FIG. 4 is a schematic structural view of an adjustable auxiliary stand structure of the present invention.
Fig. 5 is a flow chart of the gas extraction drainer and the use method thereof of the invention.
In the figure:
1. a gas extraction pipe; 2. a three-way pipe of the funnel; 3. a flange connecting plate; 4. a U-shaped pipe; 5. an airtight plug; 6. an auxiliary fixing frame structure; 61. a fixing hoop; 62. fixing the side plate; 63. a bolt and a nut; 64. a protective pad; 65. positioning the bolt; 7. an anti-slip blind hole; 8. a water liquid storage device; 81. a water storage tank; 82. a longitudinal partition; 83. a U-shaped water guide pipe; 831. adjusting a valve; 84. a left side water pump; 85. a right water pump; 9. a valve; 10. mounting a plate; 11. a left switch; 12. a right switch; 13. an adjustable auxiliary support structure; 131. a support sleeve; 132. a longitudinal strut; 133. jacking the bolt; 134. positioning the sleeve; 135. positioning the inserted rod; 136. anti-skid support legs; 1361. a buffer spring; 1362. a limiting rope.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
in the figure:
as shown in figures 1 and 3
The invention provides a gas extraction drainage device and a using method thereof, wherein the gas extraction drainage device comprises a gas extraction pipe 1, a funnel three-way pipe 2, a flange connecting disc 3, a U-shaped pipe 4, an airtight plug 5, an auxiliary fixing frame structure 6, an anti-skidding blind hole 7, a water liquid storage device 8, a valve 9, an installation plate 10, a left switch 11, a right switch 12 and an adjustable auxiliary support structure 13, wherein the funnel three-way pipe 2 is installed at the middle position of the inner side of the gas extraction pipe 1 through a flange connecting disc 3 bolt; the U-shaped pipe 4 is welded at the lower part of the funnel three-way pipe 2; the air-tight plug 5 is inserted at the right side of the upper part of the U-shaped pipe 4; the auxiliary fixing frame structure 6 is sleeved on the upper part of the outer side of the U-shaped pipe 4; the antiskid blind hole 7 is formed in the left side of the front part of the U-shaped pipe 4; the water liquid storage device 8 is arranged at the lower part of the outer side of the U-shaped pipe 4 and is arranged at the lower part of the auxiliary fixing frame structure 6; the valve 9 is in threaded connection with the upper part of the left side of the U-shaped pipe 4; the left switch 11 and the right switch 12 are respectively installed on the left side of the installation plate 10 by screws; the adjustable auxiliary support structure 13 is arranged at the lower part of the water liquid storage device 8; the water liquid storage device 8 comprises a water storage tank 81, a longitudinal partition plate 82, a U-shaped water guide pipe 83, a left water pump 84 and a right water pump 85, wherein the U-shaped water guide pipe 83 is inserted at the lower part of the front side of the water storage tank 81; the left water pump 84 and the right water pump 85 are mounted at the lower part of the front side of the water storage tank 81 through screws and are respectively communicated with the U-shaped water guide pipe 83 at the left side and the right side; the mounting plate 10 is mounted at the lower part of the left side of the water storage tank 81 through screws; the longitudinal partition 82 is longitudinally embedded in the middle position of the water storage tank 81, so that the water can be conveniently separated from the left side and the right side of the water storage tank 81 when the water storage tank is used, and the adjusting valve 831 is connected to the middle position of the U-shaped water guide pipe 83 through threads, so that the water can be prevented from flowing from the U-shaped water guide pipe 83 when the water does not need to be guided.
As shown in fig. 2, in the above embodiment, specifically, the auxiliary fixing frame structure 6 includes two fixing hoops 61, two fixing side plates 62, bolt nuts 63, a protection pad 64 and a positioning bolt 65, the fixing hoops 61 are sleeved on the outer sides of the U-shaped pipes 4, and the fixing hoops 61 are welded on the upper left side of the water storage tank 81; the fixed side plates 62 are welded at the left side and the right side of the fixed hoop 61; the bolt and the nut 63 are in threaded connection with the upper side and the lower side of the fixed side plate 62; the positioning bolt 65 is in threaded connection with the upper part and the lower part of the front side of the fixed hoop 61; fixed hoop 61 cup joint in the outside of U type pipe 4, be favorable to screwing up bolt and nut 63 on fixed curb plate 62 when using to the convenience is installed storage water tank 81, protection pad 64 splice in the inboard of fixed hoop 61, protection pad 64 adopt thickness to be three millimeters to five millimeters rubber pads, be favorable to avoiding fixed hoop 61 to cause the damage to U type pipe 4 when using.
In the above embodiment, as shown in fig. 4, in particular, the adjustable auxiliary supporting structure 13 includes a supporting sleeve 131, a longitudinal supporting rod 132, a tightening bolt 133, a positioning sleeve 134, a positioning inserted rod 135 and a non-slip supporting leg 136, wherein the longitudinal supporting rod 132 is inserted into the lower part of the inner side of the supporting sleeve 131; the tightening bolt 133 is in threaded connection with the joint of the front side of the support sleeve 131 and the longitudinal strut 132; the positioning sleeve 134 is welded at the middle lower part of the longitudinal strut 132; the positioning inserted rod 135 is inserted into the lower part of the inner side of the positioning sleeve 134; the anti-slip feet 136 are glued on the lower part of the positioning inserted bar 135; the supporting sleeve 131 is welded at the four corners of the lower part of the water storage tank 81, so that the bottom of the water storage tank 81 can be conveniently supported in use, the anti-skid feet 136 are further provided with buffer springs 1361 and limiting ropes 1362, the buffer springs 1361 are sleeved on the outer sides of the positioning sleeve 134 and the positioning inserted rod 135, so that the bottom of the adjustable auxiliary support structure 13 can be conveniently buffered in use, the upper end screws of the limiting ropes 1362 are installed on the left side and the right side of the lower part of the longitudinal supporting rod 132, the lower end screws of the limiting ropes 1362 are installed on the left side and the right side of the upper part of the anti-skid feet 136, so that the buffer springs 1361 can be conveniently limited in use, the positioning inserted rod 135 can be prevented from being ejected out of the inner side of the positioning sleeve 134 by the buffer springs 1361, the cross section of the bottom of the anti-skid feet 136 is semicircular, and the anti-skid feet 136 are made of rubber feet, the anti-skid effect of the adjustable auxiliary support structure 13 when in contact with the ground can be increased when the adjustable auxiliary support structure is used.
The gas extraction water drainer and the use method thereof concretely comprise the following steps:
with particular reference to the description shown in figure 5
S101: sealing two ends of the U-shaped pipe, closing a valve 9 on the left side of the U-shaped pipe 4, and inserting an airtight plug 5 on the right side of the upper part of the U-shaped pipe 4;
s102: the water is made to flood the right side of the U-shaped pipe, water is injected to the right side of the water storage tank 81, and the water is made to flood the airtight plug 5;
s103: when the water column in the U-shaped pipe does not rise to discharge the water liquid, the right switch 12 is turned on to supply the electric power to the right water pump 85, so that the water liquid on the right side of the water storage tank 81 is pumped to the left side of the water storage tank 81 by the U-shaped water guide pipe 83.
Principle of operation
When the water storage tank 81 is installed, firstly, the length of the longitudinal support rod 132 inserted in the support sleeve 131 is adjusted, after the adjustment is completed, the tightening bolt 133 is screwed at the joint of the longitudinal support rod 132 and the support sleeve 131, after the tightening bolt is screwed, the positioning bolt 65 can not be ensured to correspond to the anti-skid blind hole 7, so that the buffer spring 1361 can be conveniently utilized to play an auxiliary support role, so that a user can play a buffer role when installing the fixing hoop 61 on the U-shaped water guide pipe 83, two fixing hoops 61 are sleeved on the U-shaped pipe 4, then the bolt nut 63 is installed on the fixing side plate 62, the fixing hoop 61 is simultaneously pulled up and down on the U-shaped pipe 4, the positioning bolt 65 corresponds to the anti-skid blind hole 7 and is screwed into the anti-skid blind hole 7, then the bolt nut 63 is screwed, the valve 9 is opened to enable gas to enter the U-shaped pipe 4, then the valve 9 is closed, and then a water source is injected to the right side of the water storage tank 81, and the water submerges the airtight plug 5, so that the gas in the U-shaped pipe 4 is output from the airtight plug 5, so as to generate a water column in the water storage tank 81, when the water column completely disappears, the regulating valve 831 and the right switch 12 are opened, so as to supply power to the right water pump 85 by using commercial power, the water on the right side of the water storage tank 81 enters the left side of the water storage tank 81 through the U-shaped water guide pipe 83 for storage, the regulating valve 831 is closed after extraction is finished, and the regulating valve 831 and the left switch 11 are opened when the water storage tank is used next time, and the water on the left side of the water storage tank 81 is extracted to the right side of the water storage tank 81 through the U-shaped water guide pipe 83 by using the left water pump 84.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (10)
1. The gas extraction drainage device is characterized by comprising a gas extraction pipe (1), a funnel three-way pipe (2), a flange connection plate (3), a U-shaped pipe (4), an airtight plug (5), an auxiliary fixing frame structure (6), an anti-skidding blind hole (7), a water liquid storage device (8), a valve (9), a mounting plate (10), a left switch (11), a right switch (12) and an adjustable auxiliary support structure (13), wherein the funnel three-way pipe (2) is mounted in the middle position of the inner side of the gas extraction pipe (1) through a bolt of the flange connection plate (3); the U-shaped pipe (4) is welded at the lower part of the funnel three-way pipe (2); the air-tight plug (5) is inserted at the right side of the upper part of the U-shaped pipe (4); the auxiliary fixing frame structure (6) is sleeved on the upper part of the outer side of the U-shaped pipe (4); the anti-skid blind hole (7) is formed in the left side of the front part of the U-shaped pipe (4); the water liquid storage device (8) is arranged at the lower part of the outer side of the U-shaped pipe (4) and is arranged at the lower part of the auxiliary fixing frame structure (6); the valve (9) is in threaded connection with the upper part of the left side of the U-shaped pipe (4); the left switch (11) and the right switch (12) are respectively installed on the left side of the installation plate (10) through screws; the adjustable auxiliary support structure (13) is arranged at the lower part of the water liquid storage device (8); the water liquid storage device (8) comprises a water storage tank (81), a longitudinal partition plate (82), a U-shaped water guide pipe (83), a left water pump (84) and a right water pump (85), wherein the U-shaped water guide pipe (83) is inserted into the lower part of the front side of the water storage tank (81); the left water pump (84) and the right water pump (85) are mounted at the lower part of the front side of the water storage tank (81) through screws and are respectively communicated with the U-shaped water guide pipe (83) at the left side and the right side; the mounting plate (10) is mounted at the lower part of the left side of the water storage tank (81) through screws.
2. The gas extraction water discharger according to claim 1, wherein the auxiliary fixing frame structure (6) comprises two fixing hoops (61), a fixing side plate (62), a bolt and nut (63), a protective pad (64) and a positioning bolt (65), the fixing hoops (61) are sleeved on the outer side of the U-shaped pipe (4), and the fixing hoops (61) are welded on the upper portion of the left side of the water storage tank (81); the fixed side plates (62) are welded at the left side and the right side of the fixed hoop (61); the bolt and the nut (63) are in threaded connection with the upper side and the lower side of the fixed side plate (62); the positioning bolt (65) is in threaded connection with the upper part and the lower part of the front side of the fixed hoop (61).
3. The gas extraction water discharger according to claim 1, wherein the adjustable auxiliary support structure (13) comprises a support sleeve (131), a longitudinal strut (132), a tightening bolt (133), a positioning sleeve (134), a positioning inserted rod (135) and an anti-slip support leg (136), wherein the longitudinal strut (132) is inserted into the lower part of the inner side of the support sleeve (131); the tightening bolt (133) is in threaded connection with the front side connecting part of the support sleeve (131) and the longitudinal strut (132); the positioning sleeve (134) is welded at the middle lower part of the longitudinal strut (132); the positioning insertion rod (135) is inserted into the lower part of the inner side of the positioning sleeve (134); the anti-skid supporting foot (136) is glued on the lower part of the positioning inserted bar (135).
4. The gas extraction water drainer according to claim 2, wherein the fixed hoop (61) is sleeved outside the U-shaped pipe (4).
5. The gas extraction drainer as claimed in claim 3, wherein the support sleeves (131) are welded at the four lower corners of the storage tank (81).
6. The gas extraction water discharger according to claim 3, wherein the anti-slip support leg (136) is further provided with a buffer spring (1361) and a limiting rope (1362), and the buffer spring (1361) is sleeved on the outer sides of the positioning sleeve (134) and the positioning inserted rod (135).
7. The gas extraction water discharger according to claim 6, wherein the upper end screws of the limiting rope (1362) are mounted on the left and right sides of the lower portion of the longitudinal support bar (132), and the lower end screws of the limiting rope (1362) are mounted on the left and right sides of the upper portion of the anti-skid support (136).
8. The gas extraction water discharger according to claim 1, wherein an adjusting valve (831) is further screwed in the middle of the U-shaped water guide pipe (83).
9. The gas extraction water discharger according to claim 1, wherein the longitudinal partition (82) is longitudinally embedded in an intermediate position inside the water storage tank (81).
10. The use method of the gas extraction water discharger according to any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps: sealing two ends of the U-shaped pipe, closing a valve (9) on the left side of the U-shaped pipe (4), and inserting an airtight plug (5) on the right side of the upper part of the U-shaped pipe (4);
step two: the right side of the U-shaped pipe is flooded by water, the right side of the water storage tank (81) is filled with water, and the airtight plug (5) is flooded by water;
step three: when the water column in the U-shaped pipe does not rise to discharge the water liquid, the right switch (12) is turned on to supply power to the right water pump (85) by the commercial power, so that the water liquid on the right side of the water storage tank (81) is pumped to the left side of the water storage tank (81) by the U-shaped water guide pipe (83).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910850780.1A CN110500129B (en) | 2019-09-10 | 2019-09-10 | Gas extraction water drainage device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910850780.1A CN110500129B (en) | 2019-09-10 | 2019-09-10 | Gas extraction water drainage device and using method thereof |
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| CN110500129A CN110500129A (en) | 2019-11-26 |
| CN110500129B true CN110500129B (en) | 2021-07-27 |
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| CN203146015U (en) * | 2013-03-06 | 2013-08-21 | 中国矿业大学 | Ascending drilling hole orifice drainage device |
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| CN109276025A (en) * | 2018-11-12 | 2019-01-29 | 山东职业学院 | A kind of multi-functional adjustable desk |
| CN208816969U (en) * | 2018-08-31 | 2019-05-03 | 昌邑市鑫宝水利建安工程有限公司 | A kind of water pipeline for hydraulic engineering |
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2019
- 2019-09-10 CN CN201910850780.1A patent/CN110500129B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202039898U (en) * | 2011-04-30 | 2011-11-16 | 山西晋城无烟煤矿业集团有限责任公司 | Device for automatically draining water in borehole in gas drainage |
| CN203146015U (en) * | 2013-03-06 | 2013-08-21 | 中国矿业大学 | Ascending drilling hole orifice drainage device |
| CN204327175U (en) * | 2014-12-19 | 2015-05-13 | 重庆梅安森科技股份有限公司 | Gas drainage pipeline drainage system |
| CN207813649U (en) * | 2017-02-08 | 2018-09-04 | 平顶山天安煤业股份有限公司八矿 | One kind being used for gas pumping automatic water drainage device |
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| CN109276025A (en) * | 2018-11-12 | 2019-01-29 | 山东职业学院 | A kind of multi-functional adjustable desk |
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| CN110500129A (en) | 2019-11-26 |
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