Underground coal mine two-way explosive-proof device based on wireless communication

Abstract

The utility model discloses an underground coal mine two-way flameproof device based on wireless communication, which comprises a pipeline main body and an air pressure sensor, the upper end of the pipeline main body is fixedly connected with two fixing rods, the lower ends of the two fixing rods are fixedly connected with a control mechanism, the middle part of the pipeline main body is provided with a valve core, and the valve core is connected with the air pressure sensor. Two ends of the pipeline main body are fixedly connected with flange plates respectively, the upper end of the pipeline main body is fixedly connected with a mounting seat, the upper end of the mounting seat is fixedly connected with a wireless receiver, the air pressure sensor is fixedly connected with a signal connecting wire, and the other end of the signal connecting wire is connected with a wireless transmitter; and the control mechanism comprises a fixed block, a guide rod, a motor and a screw rod. The explosion-proof valve can be remotely controlled to be closed by detecting the gas pressure in a remote pipeline when the gas pressure in the pipeline is detected to reach a preset value, so that the explosion-proof valve can react quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof machinery, in particular to an underground coal mine bidirectional explosion-proof device based on wireless communication. Background Art

[0002] The two-way explosion-proof valve uses the overpressure generated during an explosion to push the valve core and block the flame and pressure generated by the explosion. It is often used for explosion-proof isolation on both sides of the explosion source, trace dust transportation, and the clean air outlet side of the dust collector. Under normal working conditions, the valve core is in the middle position of the valve. When an explosion occurs, the explosion shock wave pushes the valve core and the valve body to close. When the valve is closed, the two-way explosion-proof valve is locked and effectively prevents the spread of flames and pressure generated by the explosion.

[0003] There is a lot of gas underground in coal mines, and pipelines are needed to extract the gas underground, so a two-way explosion-proof valve needs to be installed in the pipeline. However, when an explosion occurs, in the process of ensuring that the shock wave pushes the valve core, part of the pushed gas will enter the pipeline behind through the two-way explosion-proof valve, causing damage to the device connected to the pipeline behind. Utility Model Content

[0004] The purpose of the utility model is to provide a two-way explosion-proof device in a coal mine based on wireless communication, which can detect the air pressure in a pipeline far away from a two-way explosion-proof valve. When it is detected that the air pressure in the pipeline reaches a preset value, a wireless signal is sent to the two-way explosion-proof valve to make the two-way explosion-proof valve respond quickly, thereby preventing part of the gas pushed by the shock wave from entering the rear pipeline and causing damage to the device connected to the pipeline at the rear.

[0005] To achieve the above-mentioned purpose, a two-way explosion-proof device for coal mines based on wireless communication is provided, comprising: a pipeline body and an air pressure sensor, wherein two fixing rods are fixedly connected to the upper end of the pipeline body, and the two fixing rods are symmetrically distributed and extend into the pipeline body, and a control mechanism is fixedly connected to the lower ends of the two fixing rods, a valve core is installed in the middle of the pipeline body, and the control mechanism passes through the valve core and is located in the middle of the valve core, flanges are fixedly connected to the two ends of the pipeline body respectively, and the pipeline body passes through the middle of the flange, a mounting seat is fixedly connected to the upper end of the pipeline body, and a valve core is fixedly connected to the upper end of the mounting seat. A wireless receiver, the air pressure sensor is fixedly connected with a signal connection line, and the other end of the signal connection line is connected with a wireless transmitter; the control mechanism includes a fixed block, a guide rod, a motor and a screw, the fixed block and the motor are respectively fixedly connected to the lower ends of the two fixed rods, the output end of the motor is fixedly connected to the screw, and the other end of the screw is rotatably connected to the middle of the fixed block, the screw passes through the middle of the valve core and is threadedly connected to the valve core, the guide rod is located between the fixed block and the motor, and the two ends of the guide rod are respectively fixedly connected to the fixed block and the motor, the guide rod passes through the valve core and is fixedly connected to the valve core. It can detect the air pressure in the pipeline far away from the two-way explosion-proof valve. When it is detected that the air pressure in the pipeline reaches a preset value, a wireless signal is sent to the two-way explosion-proof valve, so that the two-way explosion-proof valve responds quickly, avoiding part of the gas driven by the shock wave from entering the rear pipeline and causing damage to the device connected to the pipeline at the rear.

[0006] According to the wireless communication-based underground coal mine two-way explosion-proof device, a pressure sensor is installed on the valve core surface, which can detect the pressure on the valve core surface and avoid the two-way explosion-proof valve not being able to work properly due to a pressure sensor failure.

[0007] According to the wireless communication-based underground coal mine bidirectional explosion-proof device, the motor has a high temperature resistance function, which prevents the motor from being damaged by fire generated by explosion during operation, thereby extending the service life of the motor.

[0008] According to the wireless communication-based underground coal mine bidirectional explosion-proof device, four guide rods are provided, and the four guide rods are rectangularly distributed at the side ends of the fixed block and the motor, thereby improving the stability of the valve core during movement.

[0009] According to the wireless communication-based underground coal mine bidirectional explosion-proof device, the diameter of the middle part of the screw is smaller than the diameter of the two ends thereof, and the valve core is located in the middle part of the screw. The valve core is limited to prevent the valve core from being pushed and stuck in the pipeline body by the impact of the shock wave.

[0010] According to the wireless communication-based underground coal mine two-way explosion-proof device, the outer end of the flange is circumferentially evenly distributed with a plurality of screw holes for connecting the two-way explosion-proof valve to the pipeline.

[0011] The beneficial effects of the utility model are as follows: by installing the air pressure sensor in a pipeline far away from the two-way explosion-proof valve, and sending the detection result to the two-way explosion-proof valve through a wireless transmitter, and receiving it through a wireless receiver at the upper end of the pipeline body, the two-way explosion-proof valve can respond quickly when an explosion is sent in the pipeline.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a three-dimensional structural diagram of a two-way explosion-proof device for underground coal mines based on wireless communication according to the utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of a pipeline body of a two-way explosion-proof device for underground coal mines based on wireless communication according to the utility model;

[0016] Figure 3 The utility model is a three-dimensional structural diagram of a valve core and a fixing mechanism of a two-way explosion-proof device for underground coal mines based on wireless communication.

[0017] Legend:

[0018] 1. Flange; 2. Pipe body; 3. Signal connecting line; 4. Wireless transmitter; 5. Air pressure sensor; 6. Fixing rod; 7. Mounting seat; 8. Wireless receiver; 9. Control mechanism; 10. Valve core; 11. Fixing block; 12. Guide rod; 13. Motor; 14. Screw. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-3The utility model embodiment is a two-way explosion-proof device for coal mines based on wireless communication, which includes: a pipeline body 2 and an air pressure sensor 5. Two fixing rods 6 are fixedly connected to the upper end of the pipeline body 2, and the two fixing rods 6 are symmetrically distributed and extend into the pipeline body 2. The lower ends of the two fixing rods 6 are fixedly connected to a control mechanism 9. A valve core 10 is installed in the middle of the pipeline body 2, and the control mechanism 9 penetrates the valve core 10 and is located in the middle of the valve core 10. The two ends of the pipeline body 2 are respectively fixedly connected to flanges 1, and the pipeline body 2 penetrates the middle of the flange 1. The upper end of the pipeline body 2 is fixedly connected to a mounting seat 7, and the upper end of the mounting seat 7 is fixedly connected to a wireless receiver 8. The air pressure sensor 5 is fixedly connected with a signal connection line 3, and the other end of the signal connection line 3 is connected with a wireless transmitter 4; the control mechanism 9 includes a fixed block 11, a guide rod 12, a motor 13 and a screw rod 14, the fixed block 11 and the motor 13 are respectively fixedly connected to the lower ends of the two fixed rods 6, the output end of the motor 13 is fixedly connected to the screw rod 14, and the other end of the screw rod 14 is rotatably connected to the middle part of the fixed block 11, the screw rod 14 passes through the middle part of the valve core 10 and is threadedly connected to the valve core 10, the guide rod 12 is located between the fixed block 11 and the motor 13, and the two ends of the guide rod 12 are respectively fixedly connected to the fixed block 11 and the motor 13, and the guide rod 12 passes through the valve core 10 and is fixedly connected to the valve core 10.

[0021] A pressure sensor is installed on the surface of the valve core 10 .

[0022] The motor 13 has a high temperature resistance function.

[0023] Four guide rods 12 are provided, and the four guide rods 12 are distributed in a rectangular shape at the side ends of the fixing block 11 and the motor 13 .

[0024] The diameter of the middle portion of the screw rod 14 is smaller than the diameters of the two ends thereof, and the valve core 10 is located in the middle portion of the screw rod 14 .

[0025] The outer end of the flange 1 is equidistantly provided with a plurality of screw holes.

[0026] Working principle: When in use, the air pressure sensor 5 is installed in a pipeline far away from the two-way explosion-proof valve to monitor the air pressure in the pipeline. When the air pressure sensor 5 detects that the gas pressure in the pipeline reaches a preset value, a signal is sent through the wireless transmitter 4. After the wireless receiver 8 receives the wireless signal, the motor 13 drives the screw 14 to rotate forward or reverse, and cooperates with the guide rod 12 to move the valve core 10 on the surface of the screw 14 to close the two-way explosion-proof valve, thereby achieving a rapid response of the two-way explosion-proof valve.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A two-way explosion-proof device for underground coal mines based on wireless communication, characterized in that: include: A pipeline body (2) and an air pressure sensor (5), wherein the upper end of the pipeline body (2) is fixedly connected to two fixing rods (6), and the two fixing rods (6) are symmetrically distributed and extend into the pipeline body (2), the lower ends of the two fixing rods (6) are fixedly connected to a control mechanism (9), a valve core (10) is installed in the middle of the pipeline body (2), and the control mechanism (9) passes through the valve core (10) and is located in the middle of the valve core (10), the two ends of the pipeline body (2) are respectively fixedly connected to flanges (1), and the pipeline body (2) passes through the middle of the flange (1), the upper end of the pipeline body (2) is fixedly connected to a mounting seat (7), the upper end of the mounting seat (7) is fixedly connected to a wireless receiver (8), the air pressure sensor (5) is fixedly connected to a signal connection line (3), and the other end of the signal connection line (3) is connected to a wireless transmitter (4); The control mechanism (9) comprises a fixed block (11), a guide rod (12), a motor (13) and a screw rod (14); the fixed block (11) and the motor (13) are respectively fixedly connected to the lower ends of the two fixed rods (6); the output end of the motor (13) is fixedly connected to the screw rod (14), and the other end of the screw rod (14) is rotatably connected to the middle of the fixed block (11); the screw rod (14) passes through the middle of the valve core (10) and is threadedly connected to the valve core (10); the guide rod (12) is located between the fixed block (11) and the motor (13), and the two ends of the guide rod (12) are respectively fixedly connected to the fixed block (11) and the motor (13); the guide rod (12) passes through the valve core (10) and is fixedly connected to the valve core (10).

2. According to the wireless communication-based two-way explosion-proof device for coal mines in underground mines according to claim 1, it is characterized in that: A pressure sensor is installed on the surface of the valve core (10).

3. The coal mine underground bidirectional explosion-proof device based on wireless communication according to claim 1, characterized in that: The motor (13) has a high temperature resistance function.

4. The coal mine underground bidirectional explosion-proof device based on wireless communication according to claim 1, characterized in that: Four guide rods (12) are provided, and the four guide rods (12) are distributed in a rectangular shape at the side ends of the fixed block (11) and the motor (13).

5. The coal mine underground bidirectional explosion-proof device based on wireless communication according to claim 1, characterized in that: The diameter of the middle portion of the screw (14) is smaller than the diameters of the two ends thereof, and the valve core (10) is located in the middle portion of the screw (14).

6. The coal mine underground bidirectional explosion-proof device based on wireless communication according to claim 1, characterized in that: The outer end of the flange (1) is provided with a plurality of screw holes equidistantly distributed around the circumference.

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