Gas drainage device for coal mine gas control

Abstract

The utility model discloses a gas drainage device for coal mine gas control, which comprises an extraction pipe and a screening box, fixing plates are arranged at the upper end and the lower end in the screening box, elastic springs are arranged at the front portion and the rear portion of one end of each fixing plate, a vibration frame is arranged at one end of the upper elastic spring and one end of the lower elastic spring, and a sieve plate is detachably arranged in the vibration frame. A measuring rod is installed at the top end in the screening box on the side, away from the air extracting pump, of the screening plate, and an air velocity detector is installed at the upper end, located at the top end of the screening box, of the measuring rod. The air velocity detector is used for detecting the flow velocity of gas inside the screening box, when dust on the surface of the screening plate is too much, passing of the gas is hindered, the air velocity detector detects that the flow velocity of the gas is slowed down, the air velocity detector controls the shifting assembly to be started intelligently, the shifting assembly can drive the vibration frame to vibrate, and the vibration effect is improved. Intelligent cleaning of dust on the surface of the vibration frame is achieved, and the gas extraction efficiency is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction, in particular to a gas extraction device used for coal mine gas management. Background Art

[0002] Gas extraction is a measure that uses special equipment to extract or discharge combustible gas from coal seams, rock strata and goafs. When the amount of gas gushing out of coal mines is large and it is difficult to dilute and remove it by ventilation, extraction can be used to remove the gas and reduce the ventilation burden. Gas extraction usually involves building a gas pumping station on the ground, which is connected to the extraction borehole through an underground gas extraction pipeline system. When the pump is running, it creates negative pressure, extracts the gas, and sends it into a gas tank, or directly supplies it to users.

[0003] At present, most of the existing gas extraction devices use filters to filter dust in the extracted gas. After a long period of filtration, the dust will gather on the surface of the filter, blocking the flow of gas, thereby affecting the gas extraction efficiency. Based on this, a gas extraction device for coal mine gas control is proposed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a gas extraction device for coal mine gas management to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas extraction device for coal mine gas control, comprising an extraction pipe and a screening box, the left end of the extraction pipe is connected to an exhaust pump, the screening box is installed on the extraction pipe, the upper and lower ends of the screening box are installed with fixed plates, the front and rear parts of one end of the fixed plate are installed with elastic springs, and one end of the upper and lower elastic springs are commonly installed with a vibration frame, a sieve plate is detachably installed inside the vibration frame, a toggle assembly is provided on one side of the sieve plate, a dust hopper is installed at the bottom end of the screening box on the side of the sieve plate away from the exhaust pump, a storage box is detachably installed below the dust hopper, a measuring rod is installed at the top end of the screening box on the side of the sieve plate away from the exhaust pump, and an air flow rate detector is installed at the upper end of the measuring rod at the top of the screening box.

[0006] Preferably, the toggle assembly includes a motor, a toggle block, a connecting block, a moving rod, a connecting rod and a rotating shaft. The moving rod is installed on the surface of the vibration frame between the front and rear elastic springs, one end of the moving rod passes through a fixed plate, and a connecting rod is installed at one end of the two moving rods. A connecting block is installed at one end of the connecting rod, and a contact groove is arranged at one end of the connecting block. The inside of the screening box on one side of the connecting block is rotatably connected to the rotating shaft, and a toggle block is installed on the surface of the rotating shaft on one side of the contact groove. A motor is installed on the surface of the screening box in front of the rotating shaft, and the output end of the motor is connected to the rotating shaft.

[0007] Preferably, the toggle block is rectangular, and the corners of the toggle block are all rounded.

[0008] Preferably, a connecting pipe is installed at the lower end of the dust hopper, a blocking assembly is installed inside the connecting pipe, a threaded groove is arranged near the edge of the lower end of the connecting pipe, and the storage box is installed at the lower end of the connecting pipe through a connecting cover.

[0009] Preferably, the blocking assembly includes a handle, a baffle, a sealing ring and a connecting shaft, the connecting tube is rotatably connected to the connecting shaft, one end of the connecting shaft is located inside the connecting tube and is equipped with a baffle, a sealing ring is installed on the surface of the baffle, and the other end of the connecting shaft is equipped with a handle.

[0010] Preferably, a sealing plate is installed in front of the vibration frame through a groove body, and the sealing plate is in a convex shape.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The gas extraction device for coal mine gas control uses an air flow rate detector to detect the flow rate of gas inside the screening box. When there is too much dust on the surface of the screen plate and the passage of gas is hindered, the air flow rate detector detects that the gas flow rate slows down. The air flow rate detector controls the intelligent start of the toggle component, which can drive the vibration frame to vibrate, realize the intelligent cleaning of dust on the surface of the vibration frame, and effectively ensure the gas extraction efficiency.

[0013] 2. The gas extraction device for coal mine gas control is provided with a blocking component, which can seal the connecting pipe. When extracting gas, the handle in the blocking component is rotated to drive the connecting shaft to rotate, and the rotating shaft can drive the shielding plate to rotate. The shielding plate can shield the inside of the connecting pipe, which is convenient for cleaning the dust inside the storage box and convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a front cross-sectional view of the utility model;

[0016] Figure 3 It is a cross-sectional view of the barrier component of the utility model;

[0017] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1. extraction tube; 2. screening box; 3. fixing plate; 4. elastic spring; 5. vibration frame; 6. sieve plate; 8. dust bucket; 9. storage box; 10. measuring rod; 11. air velocity detector; 12. contact groove; 14. connecting cover; 15. sealing plate; 16. connecting tube; 701. motor; 702. toggle block; 703. connecting block; 704. moving rod; 705. connecting rod; 706. rotating shaft; 1301. handle; 1302. shielding plate; 1303. sealing ring; 1304. connecting shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figures 1 to 4As shown, the gas extraction device for coal mine gas control in this embodiment includes an extraction pipe 1 and a screening box 2. The left end of the extraction pipe 1 is connected to an air extraction pump, which extracts coal mine gas through the extraction pipe 1. The screening box 2 is installed on the extraction pipe 1. Fixed plates 3 are installed at the upper and lower ends of the screening box 2. Elastic springs 4 are installed at the front and rear parts of one end of the fixed plate 3. A vibration frame 5 is installed at one end of the upper and lower elastic springs 4. The vibration frame 5 can reciprocate under the action of the elastic spring 4. A sieve plate 6 is detachably installed inside the vibration frame 5. A mounting groove is provided at the front end of the vibration frame 5. The sieve plate 6 is installed inside the vibration frame 5 through the mounting groove. A toggle assembly is provided on one side of the sieve plate 6. The toggle assembly is used to toggle the vibration frame 5 to realize the vibration of the vibration frame 5. The sieve plate 6 is remote A dust hopper 8 is installed at the bottom of the screening box 2 on the side of the vacuum pump, and a storage box 9 is detachably installed below the dust hopper 8. The dust dropped from the sieve plate 6 enters the storage box 9 through the dust hopper 8 for storage. A measuring rod 10 is installed at the top of the screening box 2 on the side of the sieve plate 6 away from the vacuum pump. The upper end of the measuring rod 10 is located at the top of the screening box 2 and an air flow rate detector 11 is installed. The measuring rod 10 is a detection rod of the air flow rate detector 11. The air flow rate detector 11 is used to detect the gas flow rate on one side of the sieve plate 6. When the sieve plate 6 is clogged due to excessive dust, the gas flow rate detected by the air flow rate detector 11 slows down, and the air flow rate detector 11 controls the start of the toggle component to realize the vibration of the vibration frame 5, and intelligently clean the dust on the vibration frame 5.

[0023] Specifically, the toggle assembly includes a motor 701, a toggle block 702, a connecting block 703, a moving rod 704, a connecting rod 705 and a rotating shaft 706. The moving rod 704 is installed on the surface of the vibration frame 5 between the front and rear elastic springs 4. One end of the moving rod 704 passes through the fixed plate 3. The two moving rods 704 are jointly installed with a connecting rod 705 at one end. A connecting block 703 is installed at one end of the connecting rod 705. A contact groove 12 is arranged at one end of the connecting block 703. The screening box 2 on one side of the connecting block 703 is rotatably connected with a rotating shaft 706. The rotating shaft 706 on one side of the contact groove 12 06 surface is installed with a toggle block 702, and a motor 701 is installed on the surface of the screening box 2 in front of the rotating shaft 706. The output end of the motor 701 is connected to the rotating shaft 706. The motor 701 drives the toggle block 702 to rotate through the rotating shaft 706. The toggle block 702 contacts the contact groove 12 on one side of the connecting block 703. The connecting block 703 drives the vibration frame 5 to move through the connecting rod 705 and the moving rod 704. At the same time, the vibration frame 5 stretches the elastic spring 4. With the rotation of the toggle block 702, the vibration frame 5 can vibrate back and forth to realize the cleaning of dust on the screen plate 6.

[0024] Furthermore, the toggle block 702 is rectangular, and the corners of the toggle block 702 are all provided with rounded corners. The toggle block 702 can toggle the connecting block 703, and the rounded corners of the toggle block 702 facilitate the stability of the toggle block 702 when toggling.

[0025] Furthermore, a connecting pipe 16 is installed at the lower end of the dust hopper 8, and a blocking component is installed inside the connecting pipe 16. The blocking component is used to block the connecting pipe 16, so that the dust inside the storage box 9 can be cleaned when the gas is extracted. A threaded groove is arranged near the edge of the lower end of the connecting pipe 16, and the storage box 9 is installed at the lower end of the connecting pipe 16 through a connecting cover 14. The connecting cover 14 connects the storage box 9 and the connecting pipe 16 by a threaded connection.

[0026] Furthermore, the blocking component includes a handle 1301, a baffle plate 1302, a sealing ring 1303 and a connecting shaft 1304. The connecting shaft 1304 is rotatably connected to the connecting pipe 16. The connecting shaft 1304 is located at one end inside the connecting pipe 16 and is equipped with a baffle plate 1302. The sealing ring 1303 is installed on the surface of the baffle plate 1302. The other end of the connecting shaft 1304 is equipped with a handle 1301. The connecting shaft 1304 is rotated by rotating the handle 1301. The connecting shaft 1304 can drive the baffle plate 1302 to rotate. The baffle plate 1302 can shield the inside of the connecting pipe 16. The sealing ring 1303 on the surface of the baffle plate 1302 can seal the gap between the baffle plate 1302 and the connecting pipe 16 to prevent gas leakage.

[0027] Furthermore, a sealing plate 15 is installed in front of the vibration frame 5 through a groove body. The sealing plate 15 is in a convex shape and is installed by bolts. By disassembling the sealing plate 15, the sieve plate 6 inside the vibration frame 5 can be taken out, which is convenient for replacing the sieve plate 6 and maintaining the screening effectiveness of the sieve plate 6.

[0028] The method of using this embodiment is as follows: when extracting coal mine gas, the extraction pipe 1 is extended into the coal mine, and the extraction pump is started to extract the gas inside the coal mine. During this process, the gas air is filtered through the sieve plate 6, and the filtered gas air is discharged through the extraction pipe 1 at the other end of the screening box 2. During this process, the measuring rod 10 of the air flow rate detector 11 measures the gas air flow rate. When there is too much dust on the surface of the sieve plate 6, the dust will affect the flow rate of the gas air. When the air flow rate detector 11 detects that the gas flow rate slows down, the air flow rate detector 11 controls the motor 701 to start intelligently, and the motor 701 drives the toggle block 702 to rotate through the rotating shaft 706. The toggle block 702 is connected to the contact groove 12 on one side of the connecting block 703. The connecting block 703 drives the vibration frame 5 to move through the connecting rod 705 and the moving rod 704, and the vibration frame 5 stretches the elastic spring 4. With the rotation of the toggle block 702, the vibration frame 5 can vibrate back and forth to clean the dust on the screen plate 6. The dust vibrated and dropped enters the storage box 9 through the dust collecting hopper 8 and the connecting pipe 16. The connecting shaft 1304 is driven to rotate by rotating the handle 1301. The connecting shaft 1304 can drive the baffle plate 1302 to rotate. The baffle plate 1302 can block the inside of the connecting pipe 16. The sealing ring 1303 on the surface of the baffle plate 1302 can seal the gap between the baffle plate 1302 and the connecting pipe 16. The storage box 9 can be removed from the connecting pipe 16 for easy use.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gas extraction device for coal mine gas control, comprising an extraction pipe (1) and a screening box (2), wherein the left end of the extraction pipe (1) is connected to an air pump, and the screening box (2) is installed on the extraction pipe (1), characterized in that: The upper and lower ends of the screening box (2) are both installed with fixed plates (3), the front and rear parts of one end of the fixed plate (3) are both installed with elastic springs (4), and one end of the elastic springs (4) at the upper and lower ends are jointly installed with a vibration frame (5), a sieve plate (6) is detachably installed inside the vibration frame (5), a toggle assembly is provided on one side of the sieve plate (6), a dust hopper (8) is installed at the bottom end of the screening box (2) on the side of the sieve plate (6) away from the vacuum pump, a storage box (9) is detachably installed below the dust hopper (8), a measuring rod (10) is installed at the top end of the screening box (2) on the side of the sieve plate (6) away from the vacuum pump, and an air flow rate detector (11) is installed at the upper end of the measuring rod (10) located at the top end of the screening box (2).

2. The gas extraction device for coal mine gas control according to claim 1, characterized in that: The toggle assembly comprises a motor (701), a toggle block (702), a connecting block (703), a moving rod (704), a connecting rod (705) and a rotating shaft (706); the moving rod (704) is installed on the surface of the vibration frame (5) between the front and rear elastic springs (4); one end of each of the moving rods (704) passes through the fixed plate (3); one end of the two moving rods (704) is commonly installed with a connecting rod (705); and the connecting rod (705) is connected to the rotating shaft (706). A connecting block (703) is installed at one end, a contact groove (12) is arranged at one end of the connecting block (703), a rotating shaft (706) is rotatably connected inside the screening box (2) on one side of the connecting block (703), a toggle block (702) is installed on the surface of the rotating shaft (706) on one side of the contact groove (12), a motor (701) is installed on the surface of the screening box (2) in front of the rotating shaft (706), and the output end of the motor (701) is connected to the rotating shaft (706).

3. The gas extraction device for coal mine gas control according to claim 2, characterized in that: The toggle block (702) is rectangular, and the corners of the toggle block (702) are all rounded.

4. The gas extraction device for coal mine gas control according to claim 1, characterized in that: A connecting pipe (16) is installed at the lower end of the dust collecting hopper (8), a blocking assembly is installed inside the connecting pipe (16), a threaded groove is arranged near the edge of the lower end of the connecting pipe (16), and the storage box (9) is installed at the lower end of the connecting pipe (16) through a connecting cover (14).

5. The gas extraction device for coal mine gas control according to claim 4, characterized in that: The blocking assembly comprises a handle (1301), a baffle plate (1302), a sealing ring (1303) and a connecting shaft (1304); the connecting tube (16) is rotatably connected to the connecting shaft (1304); one end of the connecting shaft (1304) located inside the connecting tube (16) is provided with a baffle plate (1302); a sealing ring (1303) is provided on the surface of the baffle plate (1302); and the other end of the connecting shaft (1304) is provided with a handle (1301).

6. The gas extraction device for coal mine gas control according to claim 1, characterized in that: A sealing plate (15) is installed in front of the vibration frame (5) through a groove body, and the sealing plate (15) is in a convex shape.

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