Gas extraction device for coal mine gas prevention and control

Abstract

The utility model belongs to the technical field of gas collection, and particularly relates to a gas extraction device for coal mine gas prevention and control, which comprises a coal mine gas collection box, a gas extraction pump is fixedly arranged in the coal mine gas collection box, and the gas inlet end of the gas extraction pump is communicated with a gas inlet pipeline arranged in the coal mine gas collection box. The bottom of the gas inlet pipeline is fixedly connected with a dust filtering plate, the gas outlet end of the gas extracting pump is communicated with a gas outlet pipeline arranged in the coal mine gas collecting box, a gas collecting bottle is movably inserted into the top of the coal mine gas collecting box, and a gas inlet branch pipe is fixedly arranged at the top of the gas collecting bottle; during use, the gas inlet branch pipe is in threaded connection with the gas outlet pipeline, gas in a mine can be conveyed into the gas collecting bottle to be collected, dust in the gas can be filtered through the dust filtering plate, and the dust is prevented from being sucked into the gas collecting bottle together to interfere a detection result.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gas collection technical field, especially relate to a gas extraction device for coal mine gas prevention and control. BACKGROUND

[0002] Gas refers to the harmful gas mainly composed of coal seam gas in the mine, mainly methane, sometimes refers to methane alone, gas is a colorless, odorless, odorless, combustible or explosive gas, the diffusion is higher than air, although gas is non-toxic, but when the concentration is very high, it can cause construction personnel asphyxia, therefore, before coal mining, the air inside the mine needs to be extracted and detected to prevent high gas concentration from causing dangerous accidents. Through the search, the patent with the application number 202221609685.6 discloses a gas extraction device for coal mine gas prevention and control, which comprises a collector, the surface of the collector is provided with a draw bar, and the bottom of the draw bar is fixedly connected with a limiting block. The utility model moves the fixed block inward by pressing the block inward, so that the surface of the fixed block is away from the inner wall of the limiting block, and after the distance is away, the draw bar is pulled upward, and the limiting block and the draw bar are limited by the sleeve after reaching the limit position. Finally, the user holds the draw bar to carry the collector.

[0003] However, in the actual use process, the applicant finds that when the gas inside the coal mine is sucked and collected, the gas in the coal mine cannot be filtered, so that the collected gas contains too much dust impurities, which may affect the final test result. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a gas extraction device for coal mine gas prevention and control, which solves the problem that the collected gas is mixed with dust when the gas inside the coal mine is sucked and collected, affecting the test result.

[0005] The specific scheme is as follows:

[0006] A gas extraction device for coal mine gas prevention and control, comprising a coal mine gas collection box, an air suction pump is fixedly arranged in the coal mine gas collection box, an air inlet of the air suction pump is communicated with an air inlet pipeline arranged in the coal mine gas collection box through a connecting hose, a dust filter plate is fixedly connected to the bottom of the air inlet pipeline, an air outlet of the air suction pump is communicated with an air outlet pipeline arranged in the coal mine gas collection box through a connecting hose, a sealing plug is screwed in the air outlet pipeline, a gas collection bottle is movably inserted into the top of the coal mine gas collection box, an air inlet branch pipe is fixedly arranged on the top of the gas collection bottle, a hand valve is sleeved and fixed on the air inlet branch pipe, a sealing cover is arranged on the upper end of the air inlet branch pipe, and the air inlet branch pipe is threadedly connected with the air outlet pipeline during use.

[0007] A handle is fixedly connected to the upper part of the coal mine gas collection box.

[0008] A motor is fixedly installed in the coal mine gas collection box below the vacuum pump. The rotating end of the motor extends to the outside of the coal mine gas collection box and is fixedly connected to a cleaning brush by screws. The brush on the top of the cleaning brush cleans along the dust filtering end surface of the dust filter plate.

[0009] The four corner positions on the top of the coal mine gas collection box are all provided with placement slots, and gas collection bottles are movably inserted into the placement slots.

[0010] An external threaded portion is provided on the outer wall of the upper end of the air inlet branch pipe, and an internal threaded portion is provided on the inner wall of the air outlet pipe, and the internal threaded portion is threadedly matched with the external threaded portion.

[0011] Batteries are symmetrically embedded and fixed in the coal mine gas collection boxes on both sides of the vacuum pump. A control switch is fixedly installed on the front side of the coal mine gas collection box. The control switch is electrically connected to the battery through a wire, and the vacuum pump and the motor are electrically connected to the control switch through wires respectively.

[0012] A heat dissipation cavity is provided in the coal mine gas collection box where the air extraction pump and the motor are located, and a heat dissipation window is provided on the coal mine gas collection box in front of the heat dissipation cavity.

[0013] The utility model has the following beneficial effects:

[0014] The utility model relates to a gas extraction device for coal mine gas prevention and control. By screwing the air inlet branch pipe on the gas collection bottle into the air outlet pipe and opening the hand valve on the air inlet branch pipe, the gas in the mine can be transported to the interior of the gas collection bottle for collection by driving the suction pump to rotate. The dust in the gas can be filtered by the dust filter plate to prevent the dust from being sucked into the gas collection bottle and interfering with the detection result. The dust filter end face at the bottom of the dust filter plate can be cleaned by driving the cleaning brush to rotate by driving the motor to rotate to prevent the dust from blocking the dust filter plate. The four gas collection bottles provided can collect gas in four different areas in the mine, so that the gas concentration in the mine can be better detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic top view of the structure of a gas extraction device for coal mine gas prevention and control according to the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a gas extraction device for coal mine gas prevention and control according to the utility model from a bottom view;

[0017] Figure 3 This is a schematic diagram of the internal structure of a gas extraction device for coal mine gas prevention and control according to the present utility model;

[0018] In the attached figure, 1. coal mine gas collection box; 2. control switch; 3. gas collection bottle; 31. air inlet branch pipe; 32. sealing cover; 4. handle; 5. sealing plug; 6. heat dissipation window; 7. dust filter plate; 8. screw; 9. cleaning brush; 10. hand valve; 11. placement slot; 12. battery; 13. air inlet pipe; 14. air outlet pipe; 15. vacuum pump; 16. motor. DETAILED DESCRIPTION

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

[0020] See also Figure 1-3 As shown, the utility model provides a technical solution:

[0021] The utility model provides a gas extraction device for coal mine gas prevention and treatment, including coal mine gas collection box 1, the inside fixed installation of coal mine gas collection box 1 has the air extraction pump 15, the air inlet end of air extraction pump 15 is connected with the air inlet pipeline 13 of the inside opening of coal mine gas collection box 1 through the connecting hose, the bottom fixed connection of air inlet pipeline 13 has dust filter plate 7, the air outlet end of air extraction pump 15 is connected with the air outlet pipeline 14 of the inside opening of coal mine gas collection box 1 through the connecting hose, the air outlet pipeline 14 is screwed with sealing plug 5, the inner thread portion of the inner wall of air outlet pipeline 14 is opened, the top of coal mine gas collection box 1 is inserted with gas collection bottle 3, the top of gas collection bottle 3 is fixed with the air inlet branch pipe 31, the outer wall of air inlet branch pipe 31 upper end is opened with the outer thread portion, and the inner thread portion is screwed with the outer thread portion, and the upper end of air inlet branch pipe 31 is equipped with sealing cover 32, air inlet branch pipe 31 is fixed with hand valve 10, when using, air inlet branch pipe 31 is screwed with air outlet pipeline 14, the upper portion of coal mine gas collection box 1 is fixedly connected with handle 4, by screwing air inlet branch pipe 31 on gas collection bottle 3 in air outlet pipeline 14, and opening hand valve 10 on air inlet branch pipe 31, the air extraction pump 15 below coal mine gas collection box 1 is fixedly installed with motor 16, and the rotating end of motor 16 extends to the outside of coal mine gas collection box 1 and is fixedly connected with dust cleaning brush 9 through screw 8, and the brush of dust cleaning brush 9 top is cleaned along the dust filtering end surface of dust filter plate 7, by driving air extraction pump 15 rotation, can the gas in mine is transported to the inside of gas collection bottle 3 and is collected, and the dust in gas can be filtered through dust filter plate 7, prevents dust from being sucked into gas collection bottle 3 together and causes the interference of detection result, and by driving motor 16 rotation, drives dust cleaning brush 9 rotation, can the dust filtering end surface of dust filter plate 7 bottom is cleaned, prevents dust and causes the obstruction of dust filter plate 7.

[0022] When preventing and controlling coal mine gas, the device can be moved to the position where gas needs to be collected inside the mine by holding the handle 4, and then the sealing cover 32 on the air inlet branch pipe 31 at the front end of the gas collection bottle 3 is unscrewed, and the sealing plug 5 in the air outlet pipe 14 is unscrewed, and then the front end thread of the air inlet branch pipe 31 is screwed into the air outlet pipe 14, and then the hand valve 10 is manually opened, and the air pump 15 and the motor 16 are driven to rotate. The rotation of the air pump 15 can filter the gas in the mine through the dust filter plate 7 to remove dust and impurities in the gas, and then pass through the air inlet pipe 13, the connecting The connecting hose and the outlet pipe 14 are sucked into the gas collection bottle 3 for collection. During this process, the rotation of the motor 16 can drive the dust cleaning brush 9 to rotate, and the dust on the dust filter end face at the bottom of the dust filter plate 7 is cleaned by the brush on the dust cleaning brush 9 to prevent the dust filter plate 7 from being blocked. After the gas collection inside the gas collection bottle 3 is completed, the hand valve 10 can be manually closed, and then the air inlet branch pipe 31 is unscrewed from the air outlet pipe 14, and the sealing cover 32 is re-screwed on the upper end of the air inlet branch pipe 31, and the sealing plug 5 is re-screwed into the air outlet pipe 14 to complete the gas collection for coal mine gas prevention and control.

[0023] The four corners of the top of the coal mine gas collection box 1 are all provided with placement slots 11, and gas collection bottles 3 are movably inserted in the four placement slots 11. Through the four gas collection bottles 3, the gas in different areas of the mine can be collected, so that the gas concentration in the mine can be better detected. The coal mine gas collection box 1 on both sides of the air pump 15 is symmetrically embedded with batteries 12. The front side of the coal mine gas collection box 1 is fixed with a control switch 2. The control switch 2 is electrically connected to the battery 12 through a wire. The air pump 15 and the motor 16 are respectively electrically connected to the control switch 2 through a wire. The control switch 2 controls the air pump 15 and the motor 16 works, a heat dissipation cavity is opened in the coal mine gas collection box 1 where the vacuum pump 15 and the motor 16 are located, and a heat dissipation window 6 is provided on the coal mine gas collection box 1 on the front side of the heat dissipation cavity. After the gas collection in one of the gas collection bottles 3 is completed, the device can be manually moved to another area in the mine, and the gas in the mine is collected through the new gas collection bottle 3. Before collecting the gas in the new area, the vacuum pump 15 can be continuously driven to rotate, and the residual gas collected in the previous area in the air inlet pipe 13 and the air outlet pipe 14 can be discharged, and then the air inlet branch pipe 31 on the new gas collection bottle 3 can be screwed into the air outlet pipe 14 to collect gas.

[0024] Working principle: When in use, when preventing and controlling coal mine gas, the device can be moved to the position where gas needs to be collected inside the mine by holding the handle 4, and then the sealing cover 32 on the air inlet branch pipe 31 at the front end of the gas collection bottle 3 is unscrewed, and the sealing plug 5 in the air outlet pipe 14 is unscrewed, and then the front end thread of the air inlet branch pipe 31 is screwed into the air outlet pipe 14, and then the hand valve 10 is manually opened, and the air pump 15 and the motor 16 are driven to rotate. The rotation of the air pump 15 can filter the gas in the mine through the dust filter plate 7, remove the dust and impurities in the gas, and then suck it into the gas collection bottle 3 through the air inlet pipe 13, the connecting hose and the air outlet pipe 14 for collection. In this process, the rotation of the motor 16 can drive the dust cleaning brush 9 to rotate, and the dust on the dust filter end face at the bottom of the dust filter plate 7 is cleaned by the brush on the dust cleaning brush 9. Clean it to prevent the dust filter plate 7 from being blocked. After the gas is collected inside the gas collection bottle 3, the hand valve 10 can be manually closed, and then the air inlet branch pipe 31 can be unscrewed from the air outlet pipe 14, and the sealing cover 32 can be re-screwed on the upper end of the air inlet branch pipe 31, and the sealing plug 5 can be re-screwed into the air outlet pipe 14 to complete the gas collection for coal mine gas prevention and control. After the gas collection in one of the gas collection bottles 3 is completed, the device can be manually moved to another area in the mine, and the gas in the mine can be collected through the new gas collection bottle 3. Before collecting the gas in the new area, the vacuum pump 15 can be continuously driven to rotate, and the residual gas collected in the previous area in the air inlet pipe 13 and the air outlet pipe 14 can be discharged, and then the air inlet branch pipe 31 on the new gas collection bottle 3 can be screwed into the air outlet pipe 14 for gas collection.

[0025] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein fall within the scope of protection of the present invention.

Claims

1. A gas extraction device for coal mine gas prevention and control, characterized in that: It includes a coal mine gas collection box, an air extraction pump is fixedly installed inside the coal mine gas collection box, the air inlet end of the air extraction pump is connected with the air inlet pipe opened in the coal mine gas collection box through a connecting hose, the bottom of the air inlet pipe is fixedly connected with a dust filter plate, the air outlet end of the air extraction pump is connected with the air outlet pipe opened in the coal mine gas collection box through a connecting hose, a sealing plug is screwed on the thread in the air outlet pipe, a gas collection bottle is movably inserted on the top of the coal mine gas collection box, an air inlet branch pipe is fixedly provided on the top of the gas collection bottle, a hand valve is fixed on the air inlet branch pipe, and a sealing cover is provided on the upper end of the air inlet branch pipe. When in use, the air inlet branch pipe is threadedly connected to the air outlet pipe.

2. A gas extraction device for coal mine gas prevention and control according to claim 1, characterized in that: A handle is fixedly connected to the upper part of the coal mine gas collection box.

3. A gas extraction device for coal mine gas prevention and control according to claim 1, characterized in that: A motor is fixedly installed in the coal mine gas collection box below the vacuum pump. The rotating end of the motor extends to the outside of the coal mine gas collection box and is fixedly connected to a cleaning brush by screws. The brush on the top of the cleaning brush cleans along the dust filtering end surface of the dust filter plate.

4. A gas extraction device for coal mine gas prevention and control according to claim 1, characterized in that: The four corner positions on the top of the coal mine gas collection box are all provided with placement slots, and gas collection bottles are movably inserted into the placement slots.

5. A gas extraction device for coal mine gas prevention and control according to claim 1, characterized in that: An external threaded portion is provided on the outer wall of the upper end of the air inlet branch pipe, and an internal threaded portion is provided on the inner wall of the air outlet pipe, and the internal threaded portion is threadedly matched with the external threaded portion.

6. A gas extraction device for coal mine gas prevention and control according to claim 1, characterized in that: Batteries are symmetrically embedded and fixed in the coal mine gas collection boxes on both sides of the vacuum pump. A control switch is fixedly installed on the front side of the coal mine gas collection box. The control switch is electrically connected to the battery through a wire, and the vacuum pump and the motor are electrically connected to the control switch through wires respectively.

7. A gas extraction device for coal mine gas prevention and control according to claim 3, characterized in that: A heat dissipation cavity is provided in the coal mine gas collection box where the air extraction pump and the motor are located, and a heat dissipation window is provided on the coal mine gas collection box in front of the heat dissipation cavity.

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