Extraction drilling drainage device for coal seam difficult to extract

Abstract

The utility model provides an extraction drilling drainage device for a difficult-to-extract coal seam, which belongs to the technical field of coal seam extraction drainage and comprises an extraction pipeline, an extraction negative pressure machine is mounted at one end of the extraction pipeline positioned on the ground, a liquid extraction pipe is mounted on the extraction pipeline, a filter part is mounted at the bottom end of the liquid extraction pipe, and a drainage hole is formed in the filter part. And a first branch pipe is mounted at the top end of the liquid pumping pipe. Through the arrangement of the first branch pipe, the first electromagnetic valve, the first water tank, the second water tank, the liquid level sensor, the second branch pipe, the second electromagnetic valve, the third electromagnetic valve and the controller, the water volume in the water tanks is automatically monitored, and after the water volume pumped by one water tank reaches a preset value, the other water tank is started to pump water; the automation degree is high, the water volume in the water tank does not need to be checked manually, water is continuously discharged without shutdown, the water discharging efficiency is improved, and the problems that in the prior art, manual checking of the water volume of the water tank causes manual fatigue and the water discharging efficiency is low are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal seam drainage water releasing technology field, specifically, relate to a kind of difficult extraction coal seam's extraction borehole water releasing device. BACKGROUND

[0002] The situation that is often encountered in coal seam gas extraction is water accumulation. As the extraction goes deeper, the water depth becomes deeper, and the water deposits with coal ash inside, which cannot be discharged in time, affecting the gas drainage effect. A water releasing device is needed to extract and discharge the deposited water in the bottom coal seam.

[0003] After searching, the prior art, patent application number CN201920722075.9 discloses a kind of difficult extraction coal seam's extraction borehole water releasing device, including extraction pipeline, the extraction pipeline is installed with extraction negative pressure machine at one end on ground, extraction liquid pipe is attached and installed on the inner wall of extraction pipeline, the extraction liquid pipe is connected with pipeline connector at one end above ground through the inner wall of extraction pipeline, the pipeline connector is inserted and installed with water tank connecting pipe, the water tank connecting pipe is installed with water tank, the water tank is inserted with negative pressure pipeline, and the negative pressure pipeline is inserted on extraction negative pressure machine. The utility model has reasonable structure, the water in the water tank is formed by the extraction negative pressure machine on the extraction pipeline to form a negative pressure environment to extract the water in the extraction area, and the extraction liquid pipe is located inside the extraction pipeline, which reduces the workload of re-drilling, saves drilling, water pumping and other equipment resources, the water tank can select the water extraction and water discharge state by opening and closing the first control valve and the second control valve, increase the safety and controllability of the device, but still has the following defects:

[0004] (1) The water releasing device in the prior art needs to manually check the amount of water extracted in the water tank, which causes strong manual fatigue, and the water is easily extracted into the extraction negative pressure machine due to carelessness, which is inconvenient to use. After a single water tank is full, it needs to be stopped and shut down, and water can be released again after water is released, which reduces the efficiency of water release;

[0005] (2) The water tank of the water releasing device in the prior art is easy to deposit impurities in the water in the bottom of the water tank to form sludge during water extraction, which is inconvenient to discharge the sludge deposited in the bottom of the water tank.

[0006] Therefore, we improve it and propose a kind of difficult extraction coal seam's extraction borehole water releasing device. UTILITY MODEL CONTENT

[0007] The utility model aims at the problem that manual checking of water tank water volume causes strong manual fatigue, low water releasing efficiency and inconvenience to discharge sludge deposited in the bottom of water tank.

[0008] In order to realize the above-mentioned utility model purpose, the utility model provides the following technical scheme:

[0009] The application discloses a water drainage device for a drainage borehole in a difficult-to-drain coal seam.

[0010] The utility model discloses a specific as follows:

[0011] Including the extraction pipeline, the extraction pipeline one end on the ground is equipped with the extraction negative pressure machine, be equipped with the liquid extraction pipe on the extraction pipeline, the bottom of liquid extraction pipe is equipped with filter piece, the top of liquid extraction pipe is equipped with first branch pipe, two ends of first branch pipe are fixedly connected with first solenoid valve respectively, the end of first solenoid valve is fixedly connected with the connecting pipe, the end of two connecting pipes is fixedly connected with first water tank and second water tank respectively, liquid level sensor is all installed on first water tank and second water tank, second branch pipe is installed on the extraction negative pressure machine, the end of second branch pipe is fixedly connected with second solenoid valve, the end of second solenoid valve is fixedly connected with the air extraction pipe, the bottom of two air extraction pipes is communicated with first water tank and second water tank respectively, the outer lateral wall of first water tank and second water tank is fixedly connected with drain pipe respectively, third solenoid valve is all installed on drain pipe, and the silt removal structure is equipped in first water tank and second water tank.

[0012] As a preferred technical scheme of the utility model, the silt removal structure comprises two guide plates fixed in the first water tank and the second water tank respectively, a conveying shaft is arranged between the two guide plates, the conveying shaft is rotatably connected with the side walls of the first water tank and the second water tank respectively, helical blades are fixedly connected to the conveying shaft, a sewage pipe is fixedly connected to the bottom of the front side wall of the first water tank and the second water tank, a sewage valve is fixedly connected to the outer end of the sewage pipe, one end of the conveying shaft, away from the sewage pipe, penetrates through the side walls of the first water tank and the second water tank and is fixedly connected with a first pulley, a first synchronous belt is transmissionally connected between the first pulleys, a connecting shaft is fixedly connected to the outer end of the conveying shaft in the first water tank, a second pulley is fixedly connected to the connecting shaft, a bracket is fixedly connected to the first water tank, a motor is fixedly connected to the bracket, a third pulley is fixedly connected to the driving end of the motor, and the third pulley is transmissionally connected with the second pulley through a second synchronous belt.

[0013] As a preferred technical scheme of the utility model, the outer side walls of the first water tank and the second water tank are both provided with observation openings, and tempered glass is sealingly and fixedly connected in the observation openings.

[0014] As a preferred technical scheme of the utility model, the upper end face of the first water tank is fixedly connected with a control box, a controller and a buzzer are respectively installed in the control box, a panel is fixedly connected to the upper end face of the control box, a touch screen is fixedly connected to the panel, a sound hole corresponding to the position of the buzzer is formed in the panel, and the buzzer and the touch screen are electrically connected with the controller.

[0015] As the preferred technical scheme of the utility model, the first electromagnetic valve, the liquid level sensor, the second electromagnetic valve and the third electromagnetic valve are electrically connected with the controller respectively.

[0016] As the preferred technical scheme of the utility model, the first water tank and the second water tank are of the same size.

[0017] Compared with the prior art, the utility model has the beneficial effects of:

[0018] In the scheme of the utility model,

[0019] 1. By setting the first branch pipe, the first electromagnetic valve, the first water tank, the second water tank, the liquid level sensor, the second branch pipe, the second electromagnetic valve, the third electromagnetic valve and the controller, the water amount in the water tank is monitored automatically, the water amount extracted by one water tank reaches the preset value, and the other water tank is started to extract water, the degree of automation is high, manual checking of the water amount in the water tank is not needed, continuous water discharge does not need to stop, the water discharge efficiency is improved, and the problems of manual fatigue and low water discharge efficiency caused by manual checking of the water amount in the water tank in the prior art are solved.

[0020] 2. By setting the dredging structure, the silt deposited at the bottom of the water tank is cleaned automatically, the cleanliness inside the water tank is ensured, the silt can be prevented from interfering with water discharge, and the problem that the silt at the bottom of the water tank cannot be cleaned in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model provides whole structure schematic view;

[0022] Figure 2 The utility model provides internal structure schematic view;

[0023] Figure 3 The utility model provides first water tank internal structure schematic view;

[0024] Figure 4 The utility model provides partial structure schematic view of dredging structure;

[0025] Figure 5 The utility model provides control box internal structure schematic view;

[0026] Figure 6 The utility model provides second water tank internal plane structure schematic view.

[0027] Indicated in the figure:

[0028] 1, extraction pipeline; 2, extraction negative pressure machine; 3, liquid extraction pipe; 4, filter; 5, first branch pipe; 6, first electromagnetic valve; 7, connecting pipe; 8, first water tank; 9, second water tank; 10, liquid level sensor; 11, second branch pipe; 12, second electromagnetic valve; 13, air extraction pipe; 14, drain pipe; 15, third electromagnetic valve; 16, dredging structure; 1601, guide plate; 1602, conveying shaft; 1603, spiral blade; 1604, drain pipe; 1605, drain valve; 1606, first pulley; 1607, first synchronous belt; 1608, connecting shaft; 1609, second pulley; 1610, support; 1611, motor; 1612, third pulley; 1613, second synchronous belt; 17, tempered glass; 18, control box; 19, controller; 20, buzzer; 21, panel; 22, touch screen; 23, sound hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0030] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The embodiment shown proposes a water drainage device for a difficult-to-drain coal seam drainage drilling, which comprises a drainage pipeline 1, one end of the drainage pipeline 1 is installed with a drainage negative pressure machine 2 on the ground, a liquid suction pipe 3 is installed on the drainage pipeline 1, a filter 4 is installed at the bottom end of the liquid suction pipe 3, a first branch pipe 5 is installed at the top end of the liquid suction pipe 3, two ends of the first branch pipe 5 are respectively fixedly connected with first electromagnetic valves 6, ends of the first electromagnetic valves 6 are fixedly connected with connecting pipes 7, ends of the two connecting pipes 7 are respectively fixedly connected with a first water tank 8 and a second water tank 9, liquid level sensors 10 are installed on the first water tank 8 and the second water tank 9, a second branch pipe 11 is installed on the drainage negative pressure machine 2, two ends of the second branch pipe 11 are fixedly connected with second electromagnetic valves 12, ends of the second electromagnetic valves 12 are fixedly connected with air suction pipes 13, bottoms of the two air suction pipes 13 are respectively communicated with the first water tank 8 and the second water tank 9, outer side walls of the first water tank 8 and the second water tank 9 are fixedly connected with drainage pipes 14, third electromagnetic valves 15 are installed on the drainage pipes 14, and desilting structures 16 are arranged in the first water tank 8 and the second water tank 9; when the water level of the first water tank 8 reaches a preset height, the liquid level sensor 10 sends a signal to a controller 19, the controller 19 controls the first electromagnetic valves 6 and the second electromagnetic valves 12 connected with the first water tank 8 to be closed, the first electromagnetic valves 6 and the second electromagnetic valves 12 on the second water tank 9 are opened, the second water tank 9 is used for water storage, and the third electromagnetic valves 15 on the first water tank 8 are opened to discharge water in the first water tank 8 by using external water suction equipment.

[0031] As Figure 3 , Figure 4 and Figure 6As shown, in a preferred embodiment, based on the above method, the dredging structure 16 further includes two guide plates 1601 fixedly inside the first water tank 8 and the second water tank 9, respectively. A conveying shaft 1602 is provided between the two guide plates 1601. The conveying shaft 1602 is rotatably connected to the side walls of the first water tank 8 and the second water tank 9, respectively. A spiral blade 1603 is fixedly connected to the conveying shaft 1602. A drain pipe 1604 is fixedly connected to the bottom of the front side wall of both the first water tank 8 and the second water tank 9. A drain valve 1605 is fixedly connected to the outer end of the drain pipe 1604. One end of the conveying shaft 1602 away from the drain pipe 1604 passes through the side wall of the first water tank 8 and the second water tank 9 and is fixedly connected to a first pulley 1606. A first synchronous belt 1607 is drivingly connected between the first pulleys 1606. A connecting shaft 1608 is fixedly connected to the outer end of the conveying shaft 1602 inside the first water tank 8. A second pulley is fixedly connected to the connecting shaft 1608. 1609, A bracket 1610 is fixedly connected to the first water tank 8, and a motor 1611 is fixedly connected to the bracket 1610. A third pulley 1612 is fixedly connected to the drive end of the motor 1611. The third pulley 1612 is connected to the second pulley 1609 via a second synchronous belt 1613. The motor 1611 drives the third pulley 1612 to rotate. The third pulley 1612 drives the second pulley 1609, the connecting shaft 1608, the first pulley 1606, and the conveying shaft 1602 in the first water tank 8 to rotate via the second synchronous belt 1613. Then, the first synchronous belt 1607 causes the other first pulley 1606 and the conveying shaft 1602 in the second water tank 9 to rotate, thereby causing the two spiral blades 1603 to rotate simultaneously. The spiral blades 1603 push the silt or impurities at the bottom of the first water tank 8 and the second water tank 9 toward the drain pipe 1604. Opening the drain valve 1605 will discharge the silt or impurities.

[0032] like Figure 1 As shown, in a preferred embodiment, based on the above method, observation ports are further provided on the outer walls of both the first water tank 8 and the second water tank 9, and tempered glass 17 is sealed and fixedly connected inside the observation ports; the tempered glass 17 allows for easy viewing of the sludge deposition inside the first water tank 8 or the second water tank 9, facilitating timely cleaning.

[0033] like Figure 2 and Figure 5As shown, in a preferred embodiment, based on the above method, a control box 18 is fixedly connected to the upper surface of the first water tank 8. A controller 19 and a buzzer 20 are installed in the control box 18. A panel 21 is fixedly connected to the upper surface of the control box 18. A touch screen 22 is fixedly connected to the panel 21. A sound transmission hole 23 corresponding to the position of the buzzer 20 is opened on the panel 21. The buzzer 20 and the touch screen 22 are electrically connected to the controller 19. The touch screen 22 facilitates operation by the operator, and the buzzer 20 can sound an alarm to remind the operator to empty the first water tank 8 or the second water tank 9.

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, in a preferred embodiment, based on the above method, the first solenoid valve 6, the liquid level sensor 10, the second solenoid valve 12 and the third solenoid valve 15 are further electrically connected to the controller 19; they can automatically control the switching according to parameters such as water level, realizing automated and intelligent management.

[0035] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the first water tank 8 and the second water tank 9 are of the same size; they can be used alternately, thereby ensuring the continuity of the water discharge process and improving the efficiency of water discharge.

[0036] Specifically, the water drainage device of the extraction borehole of the difficult-to-extract coal seam is used as follows: first, the extraction pipeline 1 is inserted into the prepared extraction well, and various mechanisms are installed, then the extraction negative pressure machine 2 is started, the extraction negative pressure machine 2 causes the coal gas in the extraction area to be extracted upward, at the same time, the first electromagnetic valve 6 and the second electromagnetic valve 12 connected with the first water tank 8 are opened, a negative pressure environment is formed in the first water tank 8, and water is extracted into the first water tank 8 through the liquid extraction pipe 3, when the liquid level sensor 10 on the first water tank 8 monitors that the liquid level reaches the preset water level, the controller 19 controls the first electromagnetic valve 6 and the second electromagnetic valve 12 connected with the first water tank 8 to be closed, the first electromagnetic valve 6 and the second electromagnetic valve 12 on the second water tank 9 are opened, the second water tank 9 is used to store water, at the same time, the controller 19 controls the buzzer 20 to alarm, and the third electromagnetic valve 15 on the first water tank 8 is opened, then the water in the first water tank 8 is manually discharged by using an external water extraction device; when dredging is needed, the motor 1611 is started to drive the third belt pulley 1612 to rotate, the third belt pulley 1612 drives the second belt pulley 1609, the connecting shaft 1608, the first belt pulley 1606 and the conveying shaft 1602 in the first water tank 8 to rotate through the second synchronous belt 1613, another first belt pulley 1606 and the conveying shaft 1602 in the second water tank 9 are driven to rotate through the action of the first synchronous belt 1607, so that the two spiral blades 1603 rotate at the same time, the spiral blades 1603 push the sludge or impurities at the bottom of the first water tank 8 and the second water tank 9 to the sewage pipe 1604, and the sludge or impurities can be discharged by opening the sewage valve 1605.

[0037] All the technical features in the embodiment can be freely combined according to actual needs.

[0038] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A water drainage device for a drainage bore in a difficult-to-drain coal seam, comprising an extraction duct (1), characterised in that, The extraction pipeline (1) is provided with an extraction negative pressure machine (2) at one end on the ground, the extraction pipeline (1) is provided with an extraction pipe (3), the bottom end of the extraction pipe (3) is provided with a filter (4), the top end of the extraction pipe (3) is provided with a first branch pipe (5), the two ends of the first branch pipe (5) are fixedly connected with a first electromagnetic valve (6) respectively, the ends of the first electromagnetic valve (6) are fixedly connected with a connecting pipe (7), the ends of the two connecting pipes (7) are fixedly connected with a first water tank (8) and a second water tank (9) respectively, the first water tank (8) and the second water tank (9) are provided with a liquid level sensor (10) respectively, the extraction negative pressure machine (2) is provided with a second branch pipe (11), the two ends of the second branch pipe (11) are fixedly connected with a second electromagnetic valve (12), the ends of the second electromagnetic valve (12) are fixedly connected with an air extraction pipe (13), the bottoms of the two air extraction pipes (13) are communicated with the first water tank (8) and the second water tank (9) respectively, the outer side walls of the first water tank (8) and the second water tank (9) are fixedly connected with a drain pipe (14) respectively, the drain pipes (14) are provided with a third electromagnetic valve (15) respectively, and the first water tank (8) and the second water tank (9) are provided with a dredging structure (16) respectively.

2. A water drainage device for a drainage borehole in a coal seam according to claim 1, wherein, The dredging structure (16) comprises two guide plates (1601) fixed in the first water tank (8) and the second water tank (9) respectively, a conveying shaft (1602) is arranged between the two guide plates (1601), the conveying shaft (1602) is rotatably connected with the side walls of the first water tank (8) and the second water tank (9) respectively, a spiral blade (1603) is fixedly connected with the conveying shaft (1602), a sewage discharge pipe (1604) is fixedly connected with the bottom of the front side wall of the first water tank (8) and the second water tank (9) respectively, a sewage valve (1605) is fixedly connected with the outer end of the sewage discharge pipe (1604), one end of the conveying shaft (1602) away from the sewage discharge pipe (1604) penetrates through the side wall of the first water tank (8) and the second water tank (9) respectively and is fixedly connected with a first pulley (1606), the first pulley (1606) is drivingly connected with a first synchronous belt (1607), a connecting shaft (1608) is fixedly connected with the outer end of the conveying shaft (1602) in the first water tank (8), a second pulley (1609) is fixedly connected with the connecting shaft (1608), a bracket (1610) is fixedly connected with the first water tank (8), a motor (1611) is fixedly connected with the bracket (1610), a third pulley (1612) is fixedly connected with the driving end of the motor (1611), and the third pulley (1612) is drivingly connected with the second pulley (1609) through a second synchronous belt (1613).

3. A water drainage device for a drainage borehole in a coal seam according to claim 1, wherein, The outer side walls of the first water tank (8) and the second water tank (9) are both provided with an observation hole, and a tempered glass (17) is sealingly and fixedly connected in the observation hole.

4. The drainage device of a coal seam difficult to drain according to claim 1, characterized in that, The upper end surface of the first water tank (8) is fixedly connected with a control box (18), the control box (18) is respectively provided with a controller (19) and a buzzer (20), the upper end surface of the control box (18) is fixedly connected with a panel (21), the panel (21) is fixedly connected with a touch screen (22), the panel (21) is provided with a sound hole (23) corresponding to the position of the buzzer (20), and the buzzer (20) and the touch screen (22) are electrically connected with the controller (19).

5. A water drainage device for a drainage borehole in a coal seam according to claim 1, wherein, The first electromagnetic valve (6), the liquid level sensor (10), the second electromagnetic valve (12) and the third electromagnetic valve (15) are electrically connected with the controller (19).

6. A water drainage device for a drainage borehole in a coal seam according to claim 1, wherein The first water tank (8) and the second water tank (9) are of the same size.

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