Drainage device for coal bed gas development

Abstract

The utility model relates to the field of drainage devices, in particular to a drainage device for coal bed gas development, which comprises a connecting pipeline, a drainage mechanism is arranged at the bottom end of the connecting pipeline, a first filter screen and a second filter screen are sequentially arranged on the inner side of the drainage mechanism below the connecting pipeline, and a servo motor is arranged at the bottom end of the second filter screen. A transmission rod is arranged at the output end of the top end of the servo motor, the top end of the transmission rod penetrates through the second filter screen and extends to the inner side of the first filter screen, and cleaning fan blades are arranged above the second filter screen and located on the outer side of the transmission rod. According to the water drainage device, water drained from the connecting pipeline is subjected to secondary filtration through the first filter screen and the second filter screen, and when a transmission rod in the water drainage mechanism rotates, the transmission rod drives a first lead screw to rotate at the same time; therefore, cleaning fan blades and cleaning scraping blades on the outer sides of the transmission rod and the first lead screw are used for cleaning the first filter screen and the second filter screen respectively, and impurities are prevented from remaining in discharged water to block the first filter screen and the second filter screen.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage device technical field especially uses a kind of drainage device for coalbed gas development. BACKGROUND

[0002] Coalbed gas is mainly methane, commonly known as gas, coalbed gas is transported using gas pipe during mining, and water flows during transportation, so a water collection tank is installed outside the gas pipe to collect water, and the collection process must avoid leakage of coalbed gas to prevent waste.

[0003] During coalbed gas mining, a drainage device is often used to transport coalbed gas. To facilitate the removal of moisture in coalbed gas, the existing coalbed gas development drainage device is used for a long time. The particles and impurities inside the coalbed gas are large, causing the filter screen to be blocked, thus affecting the filtering performance.

[0004] Therefore, to solve the problem of the existing coalbed gas development drainage device due to the large particles and impurities inside the coalbed gas, causing the filter screen to be blocked, thus affecting the filtering performance, a coalbed gas development drainage device can be designed. The water discharged from the connecting pipe is filtered by the first filter screen and the second filter screen. When the transmission rod inside the drainage mechanism rotates, the transmission rod drives the first lead screw to rotate, so that the transmission rod and the first lead screw outside the cleaning fan blade and the cleaning scraper clean the first filter screen and the second filter screen, respectively, to prevent impurities from being left in the discharged water and blocking the first filter screen and the second filter screen. SUMMARY

[0005] To overcome the problem of the existing coalbed gas development drainage device due to the large particles and impurities inside the coalbed gas, causing the filter screen to be blocked, thus affecting the filtering performance.

[0006] The technical solution of the utility model is a coalbed gas development drainage device, which includes a connecting pipe, a drainage mechanism at the bottom end of the connecting pipe, a first filter screen and a second filter screen in turn inside the drainage mechanism below the connecting pipe, a servo motor at the bottom end of the second filter screen, a transmission rod at the output end of the top end of the servo motor, the top end of the transmission rod extending to the inside of the first filter screen through the second filter screen, a cleaning fan blade above the second filter screen outside the transmission rod, the bottom end of the cleaning fan blade being attached to the top surface of the second filter screen, a first lead screw at the top end of the transmission rod inside the first filter screen, a cleaning scraper at the top end of the first lead screw, and the cleaning scraper extending to the inside of the first filter screen through the cleaning scraper.

[0007] Preferably, the water discharged from the connecting pipe is filtered by the first filter screen and the second filter screen, and when the transmission rod inside the drainage mechanism rotates, the transmission rod drives the first screw rod to rotate at the same time, so that the transmission rod and the first screw rod outside the cleaning fan blade and the cleaning scraper clean the first filter screen and the second filter screen respectively, preventing impurities from remaining in the discharged water and blocking the first filter screen and the second filter screen.

[0008] Preferably, the front end of the drainage mechanism is provided with a control panel, the control panel is electrically connected with the drainage mechanism, the bottom end of the drainage mechanism is provided with a drainage port, and the bottom end of the inner wall of the drainage port is provided with a control valve.

[0009] Preferably, the bottom of the cleaning scraper is provided with a movable groove inside the first filter screen, and the bottom end of the cleaning scraper extends to the inside of the movable groove.

[0010] Preferably, the bottom surface of the cleaning scraper is provided with a scraper at the intersection with the first filter screen, and the bottom end of the scraper is attached to the top surface of the first filter screen.

[0011] Preferably, the first screw rod is a double-thread screw rod, the threads at both ends of the first screw rod are symmetrical about the first screw rod, both ends of the first screw rod extend to the inside of the movable groove through the cleaning scraper, and the first screw rod is meshed with the two cleaning scrapers.

[0012] Preferably, the top end of the transmission rod extends to the bottom end of the first screw rod through the second filter screen, and the intersection of the transmission rod and the first screw rod is provided with a bevel gear, and the transmission rod and the first screw rod are drivingly connected through the bevel gear.

[0013] Preferably, the first filter screen and the second filter screen are both woven from stainless steel wires, and the pore diameters of the first filter screen and the second filter screen are consistent.

[0014] The beneficial effects of the present application are as follows:

[0015] The water discharged from the connecting pipe is filtered by the first filter screen and the second filter screen, and when the transmission rod inside the drainage mechanism rotates, the transmission rod drives the first screw rod to rotate at the same time, so that the transmission rod and the first screw rod outside the cleaning fan blade and the cleaning scraper clean the first filter screen and the second filter screen respectively, preventing impurities from remaining in the discharged water and blocking the first filter screen and the second filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure of the present application is shown in the schematic diagram;

[0017] Figure 2 The structure of the drainage mechanism of the present application is shown in the schematic diagram;

[0018] Figure 3 The internal structure of the drainage mechanism of the present application is shown in the schematic diagram;

[0019] Figure 4 The second filter screen structure of the utility model is shown.

[0020] Mark 1, connecting pipeline; 2, drainage mechanism; 3, first filter screen; 4, cleaning blade; 5, drainage port; 6, second filter screen; 7, cleaning fan blade; 8, transmission rod; 9, first screw rod; 10, movable groove; 11, servo motor; 12, bevel gear. DETAILED DESCRIPTION

[0021] The utility model is further explained below in combination with the drawings and examples.

[0022] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of coalbed gas exploitation drainage device, including connecting pipeline 1, the bottom end of connecting pipeline 1 is equipped with drainage mechanism 2, the front end of drainage mechanism 2 is equipped with control panel, control panel and drainage mechanism 2 are electrically connected, the bottom end of drainage mechanism 2 is equipped with drainage port 5, the bottom end of inner wall of drainage port 5 is equipped with control valve, and then control panel controls drainage mechanism 2;

[0023] Please refer to Figures 2-3 In the embodiment, the bottom of connecting pipeline 1 is located in the inside of drainage mechanism 2 and is equipped with first filter screen 3 and second filter screen 6 in sequence, first filter screen 3 and second filter screen 6 are all woven with stainless steel wire, the aperture of first filter screen 3 and second filter screen 6 is identical, and then first filter screen 3 and second filter screen 6 are two-stage filtered to the water discharged by connecting pipeline 1;

[0024] Please refer to Figures 2-4In the embodiment, the bottom end of the second filter screen 6 is provided with a servo motor 11, the output end of the top end of the servo motor 11 is provided with a transmission rod 8, the top end of the transmission rod 8 extends to the inside of the first filter screen 3 through the second filter screen 6, the upper side of the second filter screen 6 located outside the transmission rod 8 is provided with a cleaning fan blade 7, the bottom end of the cleaning fan blade 7 is attached to the top surface of the second filter screen 6, the top end of the transmission rod 8 located inside the first filter screen 3 is provided with a first lead screw 9, the two ends of the first lead screw 9 are provided with cleaning wipers 4 located at the top end of the first filter screen 3, the two ends of the first lead screw 9 extend to the inside of the first filter screen 3 through the cleaning wipers 4, the lower side of the cleaning wiper 4 located inside the first filter screen 3 is provided with a movable groove 10, the bottom end of the cleaning wiper 4 extends to the inside of the movable groove 10, the bottom surface of the cleaning wiper 4 is provided with a scraper at the intersection with the first filter screen 3, the bottom end of the scraper is attached to the top surface of the first filter screen 3, the first lead screw 9 is a double-thread lead screw, the threads at the two ends of the first lead screw 9 are symmetrically centered on the first lead screw 9, the two ends of the first lead screw 9 extend to the inside of the movable groove 10 through the cleaning wiper 4, the first lead screw 9 is meshed with the two cleaning wipers 4, the top end of the transmission rod 8 extends to the bottom end of the first lead screw 9 through the second filter screen 6, bevel gears 12 are provided at the intersection of the transmission rod 8 and the first lead screw 9, the transmission rod 8 and the first lead screw 9 are drivingly connected through the bevel gears 12, and then when the servo motor 11 drives the transmission rod 8 to rotate, since the upper side of the second filter screen 6 located outside the transmission rod 8 is provided with the cleaning fan blade 7, the bottom end of the cleaning fan blade 7 is attached to the top surface of the second filter screen 6, and the top end of the transmission rod 8 extends to the bottom end of the first lead screw 9 through the second filter screen 6, bevel gears 12 are provided at the intersection of the transmission rod 8 and the first lead screw 9, the transmission rod 8 and the first lead screw 9 are drivingly connected through the bevel gears 12, and the two ends of the first lead screw 9 are provided with cleaning wipers 4 located at the top end of the first filter screen 3, the bottom end of the cleaning wiper 4 is attached to the top surface of the first filter screen 3, so that the first lead screw 9 is driven to rotate simultaneously when the transmission rod 8 rotates, and the cleaning fan blade 7 and the cleaning wiper 4 clean the first filter screen 3 and the second filter screen 6 respectively, so as to prevent impurities from remaining in the discharged water and blocking the first filter screen 3 and the second filter screen 6, affecting the filtering performance.

[0025] When working, the power is turned on, the device is started, the water in the connecting pipe 1 is discharged through the bottom end of the drainage mechanism 2, and then the water in the connecting pipe 1 is treated through the drainage mechanism 2, and the first filter screen 3 and the second filter screen 6 are sequentially arranged inside the drainage mechanism 2 below the connecting pipe 1, and then the water in the connecting pipe 1 is filtered by the first filter screen 3 and the second filter screen 6, and when the servo motor 11 inside the drainage mechanism 2 drives the transmission rod 8 to rotate, the cleaning fan blade 7 is arranged outside the transmission rod 8 above the second filter screen 6, the bottom end of the cleaning fan blade 7 is attached to the top surface of the second filter screen 6, and the top end of the transmission rod 8 extends to the bottom end of the first lead screw 9 through the second filter screen 6, the intersection of the transmission rod 8 and the first lead screw 9 is provided with a bevel gear 12, and the transmission rod 8 and the first lead screw 9 are drivingly connected through the bevel gear 12, and the two ends of the first lead screw 9 are provided with cleaning scrapers 4 at the top end of the first filter screen 3, the bottom end of the cleaning scraper 4 is attached to the top surface of the first filter screen 3, so that the first lead screw 9 is driven to rotate when the transmission rod 8 rotates, and the cleaning fan blade 7 and the cleaning scraper 4 clean the first filter screen 3 and the second filter screen 6 respectively, preventing impurities from remaining in the discharged water and blocking the first filter screen 3 and the second filter screen 6, affecting the filtering performance.

[0026] Through the above steps, the water in the connecting pipe 1 is filtered by the first filter screen 3 and the second filter screen 6, and when the transmission rod 8 inside the drainage mechanism 2 rotates, the transmission rod 8 drives the first lead screw 9 to rotate, so that the cleaning fan blade 7 and the cleaning scraper 4 outside the transmission rod 8 and the first lead screw 9 clean the first filter screen 3 and the second filter screen 6 respectively, preventing impurities from remaining in the discharged water and blocking the first filter screen 3 and the second filter screen 6, affecting the filtering performance, solving the problem that the existing coalbed methane drainage device is blocked by the large particles and impurities in the coalbed methane, thereby affecting the filtering performance.

Claims

1. A drainage device for coal bed methane development, comprising a connecting pipeline (1); characterized in that: The bottom end of the connecting pipeline (1) is provided with a drainage mechanism (2), the lower side of the connecting pipeline (1) is provided with a first filter screen (3) and a second filter screen (6) in sequence, the bottom end of the second filter screen (6) is provided with a servo motor (11), the top end of the servo motor (11) is provided with a transmission rod (8), the top end of the transmission rod (8) extends to the inner side of the first filter screen (3) through the second filter screen (6), the upper side of the second filter screen (6) is provided with a cleaning fan blade (7) outside the transmission rod (8), the bottom end of the cleaning fan blade (7) is attached to the top surface of the second filter screen (6), the top end of the transmission rod (8) is provided with a first lead screw (9) inside the first filter screen (3), the two ends of the first lead screw (9) are provided with a cleaning scraper (4) at the top end of the first filter screen (3), and the two ends of the first lead screw (9) extend to the inner side of the first filter screen (3) through the cleaning scraper (4).

2. The drainage device for coal-bed methane development according to claim 1, characterized in that: The front end of the drainage mechanism (2) is provided with a control panel, the control panel is electrically connected with the drainage mechanism (2), the bottom end of the drainage mechanism (2) is provided with a drainage port (5), and the bottom end of the inner wall of the drainage port (5) is provided with a control valve.

3. The drainage device for coal-bed methane development according to claim 1, characterized in that: The lower side of the cleaning scraper (4) is provided with a movable groove (10) inside the first filter screen (3), and the bottom end of the cleaning scraper (4) extends to the inner side of the movable groove (10).

4. The drainage device for coal-bed methane development according to claim 1, characterized in that: The bottom surface of the cleaning scraper (4) is provided with a scraper at the intersection with the first filter screen (3), and the bottom end of the scraper is attached to the top surface of the first filter screen (3).

5. The drainage device for coal-bed methane development according to claim 1, characterized in that: The first lead screw (9) is a double-thread lead screw, the threads at the two ends of the first lead screw (9) are symmetrical about the first lead screw (9), the two ends of the first lead screw (9) extend to the inner side of the movable groove (10) through the cleaning scraper (4), and the first lead screw (9) is engaged with the two cleaning scrapers (4).

6. The drainage device for coal-bed methane development according to claim 1, characterized in that: The top end of the transmission rod (8) extends to the bottom end of the first lead screw (9) through the second filter screen (6), and the intersection of the transmission rod (8) and the first lead screw (9) is provided with a bevel gear (12), and the transmission rod (8) and the first lead screw (9) are drivingly connected through the bevel gear (12).

7. The drainage device for coal-bed methane development according to claim 1, characterized in that: The first filter screen (3) and the second filter screen (6) are both made of stainless steel wire knitting, and the pore diameters of the first filter screen (3) and the second filter screen (6) are consistent.

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