Coal mine goaf gas sampling device

Abstract

The utility model relates to a coal mine goaf gas sampling device which comprises a remote control car, and a camera for providing road condition and environment information is rotationally connected to the remote control car; a sampling box is mounted on the remote control car and is clamped on a car body of the remote control car; the sampling box is communicated with an air inlet pipe through an air pump, and a filtering assembly is mounted on the air inlet pipe. The filtering assembly comprises a fixing frame and a motor fixed on the fixing frame, and the fixing frame is fixed on the air inlet pipe; the output end of the motor is connected with a gear; a rotating frame is rotationally connected to the air inlet pipe, a large gear ring is arranged on the outer side of the rotating frame, and the large gear ring is meshed with the gear; and a filter screen is mounted on the rotating frame. A brush is further arranged on the fixing frame. The filter screen can be conveniently disassembled and assembled, meanwhile, the device can be remotely controlled to move, and the device is easy to operate, convenient and fast to use and safe to use.

Description

Technical Field

[0001] This utility model belongs to the field of gas sampling technology in goaf areas, and particularly relates to a gas sampling device for goaf areas in coal mines. Background Technology

[0002] Coal mine goaf gas sampling refers to the process of collecting gas samples from the cavities formed during coal mining. This process aims to monitor the gas composition and concentration in the goaf in order to assess and prevent potential safety hazards.

[0003] Existing coal mine goaf gas sampling devices typically require operators to install the sampler in the goaf for sampling. During sampling, impurities are filtered through a filter screen. However, the filter screen in current sampling devices is usually fixed with screws, making it inconvenient to quickly disassemble and assemble. In addition, the installation of the sampler requires operators to enter the goaf, which poses safety risks and has low safety. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gas sampling device for coal mine goaf areas, which facilitates the disassembly and assembly of the filter screen, and allows for remote control of the device's movement. It is simple to operate, convenient to use, and safe to use.

[0005] A gas sampling device for coal mine goaf includes a remote-controlled vehicle with a camera rotatably connected to it to provide road conditions and environmental information; a sampling box is installed on the remote-controlled vehicle and is snapped onto the vehicle body; the sampling box is connected to an air inlet pipe via an air pump, and a filter assembly is installed on the air inlet pipe.

[0006] The filter assembly includes a fixed frame and a motor fixed on it. The fixed frame is fixed to the air intake pipe. The output end of the motor is connected to a gear. A rotating frame is rotatably connected to the air intake pipe. A large gear ring is provided on the outside of the rotating frame, and the large gear ring meshes with the gear. A filter screen is installed on the rotating frame.

[0007] The rotating frame has multiple limiting rods slidably connected to its side. A second spring is provided between one end of the limiting rod and the rotating frame, and the other end of the limiting rod abuts against the side of the filter screen to fix the position of the filter screen.

[0008] The sampling device includes a support frame, which is fixed to one side of the remote control vehicle body. A limiting frame is slidably connected to the support frame, and a first spring is connected between the limiting frame and the support frame. A corresponding groove is opened on the sampling box to allow the remote control vehicle and the sampling box to engage.

[0009] The limiting frame has a wedge-shaped structure, including a wedge-shaped block corresponding to the groove.

[0010] The mounting bracket is equipped with a guide rod, on which a brush is slidably connected. The bristles of the brush are in contact with the filter screen. The handle of the brush is slidably connected to the guide rod, and a third spring is provided between the handle and the end of the guide rod.

[0011] The sampling box has a detachable sealing cover on its side, and the sealing cover is equipped with an anti-slip pad for venting gas outward.

[0012] The remote-controlled vehicle also includes a control system, and the air pump, camera, and filter components are electrically connected to the control system; the controller is wirelessly connected to the ground terminal to realize remote control from the ground.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the filter screen is abutted by a limiting rod. When the filter screen needs to be removed, it can be simply moved upwards and taken out. As the filter screen is removed, the second spring returns to its original position, causing the limiting rod to move and reset. Simultaneously, a camera is installed, providing road conditions ahead. The sampling device can be remotely moved to the coal mine goaf area, facilitating the installation and removal of the filter screen. This device is simple to operate, convenient to use, and highly safe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a gas sampling device for coal mine goaf according to the present invention;

[0016] Figure 2 This is a schematic diagram of the air inlet pipe section in a gas sampling device for coal mine goaf according to the present invention.

[0017] Figure 3 This is a schematic diagram of the connection between the support frame and the limiting frame in this utility model;

[0018] Figure 4 This is a schematic diagram of the filter assembly in this utility model;

[0019] in,

[0020] 1-Remote control car, 2-Camera, 3-Sampling box, 4-Air inlet pipe, 5-Sealing cover, 6-Support frame, 7-Limiting frame, 8-First spring, 9-Fixing frame, 10-Motor, 11-Gear, 12-Rotating frame, 13-Filter screen, 14-Limiting rod, 15-Second spring, 16-Brush, 17-Third spring. Detailed Implementation

[0021] To better explain and facilitate understanding of this utility model, the technical solution and effects of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-4 As shown, a gas sampling device for a coal mine goaf includes a remote-controlled vehicle 1. A camera 2 is rotatably connected to the upper left of the remote-controlled vehicle 1 to provide road conditions and environmental information. A sampling box 3 is placed in the middle of the remote-controlled vehicle 1 and is snapped onto the vehicle body. An air inlet pipe 4 is connected to the upper middle part of the sampling box 3 through an air pump (not shown in the figure), and a filter assembly is installed on the air inlet pipe 4.

[0023] The filter assembly includes a fixed frame 9 and a motor 10 fixed thereon. The fixed frame 9 is fixed to the lower part of the air intake pipe 4. A gear 11 is connected to the output end of the motor 10. A rotating frame 12 is rotatably connected to the middle of the air intake pipe 4. A large gear ring is provided on the outer side of the rotating frame 12, and the large gear ring meshes with the gear 11. A filter screen 13 is installed on the rotating frame 12. Three limiting rods 14 are slidably connected to the side of the rotating frame 12. A second spring 15 is provided between one end of the limiting rod 14 and the rotating frame 12. The other end of the limiting rod 14 abuts against the side of the filter screen 13, fixing the position of the filter screen and restricting the relative movement of the filter screen 13 and the rotating frame 12.

[0024] The sampling device also includes a support frame 6, which is fixed to the middle of one side of the remote-controlled vehicle 1. A limiting frame 7 is slidably connected to the support frame 6. The limiting frame 7 has a wedge-shaped structure, and a corresponding groove is opened on the sampling box 3. The wedge-shaped block of the limiting frame 7 cooperates with the groove to achieve the locking of the limiting frame 7 and the sampling box 3. A first spring 8 is connected between the limiting frame 7 and the support frame 6.

[0025] The fixing frame 9 is provided with a guide rod, and a brush 16 is slidably connected to the guide rod. The bristles of the brush 16 contact the filter screen 13 to clean the filter screen. The handle of the brush 16 is slidably connected to the guide rod, and a third spring 17 is provided between the handle and the end of the guide rod.

[0026] The sampling box 3 is threadedly connected to a sealing cover 5 on the right side, and the sealing cover 5 is provided with an anti-slip pad.

[0027] The remote-controlled vehicle 1 includes a control system, which includes a controller. The air pump, motor, and camera are electrically connected to the controller, and the controller issues operating commands to the motor and air pump. The controller is wirelessly connected to a ground terminal to enable remote control from the ground.

[0028] In use, firstly, the sampling box 3 is placed on the remote-controlled vehicle 1, with the side wall of the sampling box 3 contacting the limiting frame 7. Pushing the limiting frame 7 to slide along the support frame 6 causes the first spring 8 to contract under the pressure of the limiting frame 7. The wedge-shaped block of the limiting frame 7 engages with the groove on the side wall of the sampling box, locking the limiting frame 7 into the sampling box, and the first spring 8 returns to its original position. During the return of the first spring 8, the limiting frame 7 moves and resets, locking itself into the sampling box 3. Then, the filter screen 13 is placed on the rotating frame 12, contacting the end of the limiting rod 14. Pushing the limiting rod 14 outward causes the second spring 15 to compress, and the limiting rod 14 abuts against the side of the filter screen 13. Simultaneously, the brush 16 is pushed outward, and the third spring 17 is compressed and contracted.

[0029] When the filter screen 13 needs to be disassembled, it can be moved upwards and removed directly. The second spring 15 returns to its original position, driving the limit rod 14 to move and reset. At the same time, the third spring 17 returns to its original position, driving the brush 16 to move and reset.

[0030] The camera 2 obtains the road conditions of the desired route, and the remote-controlled vehicle 1 is moved to the coal mine goaf area via remote control, making it easy to install and remove the filter screen 13. The air pump is started, allowing gas to pass through the filter screen 13 and the air inlet pipe 4 into the sampling box 3. Simultaneously, the motor 10 on the fixed frame 9 is started, driving the gear 11 to rotate. The gear 11 meshes with the large gear ring, driving the rotating frame 12 to rotate, thereby rotating the filter screen 13. During the rotation of the filter screen 13, the brush 16 cleans the impurities on the filter screen 13, facilitating cleaning and preventing impurities from sticking to the filter screen 13 and affecting the filtration effect.

[0031] When it is necessary to remove the gas from the sampling box 3, the sealing cover 5 can be rotated to open and the gas can be removed and collected.

Claims

1. A coal mine goaf gas sampling device, characterized in that: Including remote control car (1), the remote control car (1) is rotatably connected with the camera (2) providing road condition and environment information;The remote control car (1) is installed with sampling box (3), sampling box (3) is clamped on the car body of remote control car (1);Sampling box (3) is communicated with air inlet pipe (4) by air pump, and filter assembly is installed on air inlet pipe (4).

2. The coal mine goaf gas sampling device according to claim 1, characterized in that: The filter assembly includes a fixed frame (9) and a motor (10) fixed thereon, and the fixed frame (9) is fixed on the air inlet pipe (4);The output end of the motor (10) is connected with a gear (11);The air inlet pipe (4) is rotatably connected with a rotating frame (12), and the outer side of the rotating frame (12) is provided with a gear ring, and the gear ring is engaged with the gear (11);The rotating frame (12) is provided with a filter screen (13).

3. The coal mine goaf gas sampling device according to claim 2, characterized in that: The side surface of the rotating frame (12) is slidably connected with a plurality of limiting rods (14), one end of the limiting rod (14) is provided with a second spring (15) between the rotating frame (12), and the other end of the limiting rod (14) abuts against the side surface of the filter screen (13), so as to fix the position of the filter screen.

4. The coal mine goaf gas sampling device according to claim 1, characterized in that: The sampling device includes a support frame (6), which is fixed on one side of the car body of the remote control car (1), and a limiting frame (7) is slidably connected on the support frame (6), and a first spring (8) is connected between the limiting frame (7) and the support frame (6), and a recess corresponding to the limiting frame (7) is formed on the sampling box (3), so that the remote control car (1) is clamped with the sampling box (3).

5. The coal mine goaf gas sampling device according to claim 4, characterized in that: The limiting frame (7) is a wedge-shaped structure, including a wedge-shaped block corresponding to the recess.

6. The coal mine goaf gas sampling device according to claim 2, characterized in that: The fixed frame (9) is provided with a guide rod, and a brush (16) is slidably connected on the guide rod, and the bristles of the brush (16) are in contact with the filter screen (13);The brush handle of the brush (16) is slidably connected on the guide rod, and a third spring (17) is arranged between the brush handle and the end of the guide rod.

7. The coal mine goaf gas sampling device according to claim 1, characterized in that: The side surface of the sampling box (3) is provided with a detachable sealing cover (5), and the sealing cover (5) is provided with a non-slip pad for discharging gas outward.

8. The coal mine goaf gas sampling device according to claim 1, characterized in that: The remote control car (1) further includes a control system, and the air pump, the camera and the filter assembly are electrically connected with the control system;The control system includes a controller, and the controller is in wireless communication connection with the ground terminal to realize remote control on the ground.

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