Local ventilation device for coal mine

Abstract

The utility model discloses a local ventilation device for a coal mine, and relates to the technical field of coal mining. The device comprises a bearing plate which is arranged at an inlet or a ventilation wellhead of a mine, a placing groove is fixedly formed in one side of the bearing plate, a supporting plate is fixedly arranged on one side of the placing groove, a control panel is installed on the top of the supporting plate, and a power regulator is arranged on the upper side of the front face of the supporting plate; and the ventilation mechanism is used for extracting air from the mine and conveying external air into the mine, and the ventilation mechanism comprises an air blower installed on the other side of the top of the bearing plate. The gas concentration sensor can monitor the gas concentration in a mine in real time, and when the gas concentration exceeds a set threshold value, the control panel can automatically adjust the power of the air blower through the power regulator, so that the operation power of the ventilation mechanism is changed, the air volume is rapidly increased, the ventilation efficiency is improved, and the safety of miners is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a local ventilation device for a coal mine. Background Art

[0002] In the coal mine production process, local ventilation is one of the key factors in maintaining the air quality and temperature in the mine. The main function of the local ventilation device is to provide enough fresh air for the mining face to dilute and exhaust harmful gases (such as methane, carbon monoxide, etc.), ensure the safety and health of miners, and improve work efficiency. At present, the traditional coal mine local ventilation system is generally operated by manual control, which includes manually turning on and off the fan and adjusting the operating power of the fan.

[0003] There are several significant problems with the operation of traditional ventilation systems:

[0004] First, the response speed is slow. Due to reliance on manual monitoring and adjustment, when a gas outburst or other emergency occurs at the mining face, the air volume cannot be increased quickly to cope with the emergency, resulting in insufficient ventilation response and increased safety risks. When the mining volume of the working face is reduced or work is stopped, the ventilation volume cannot be reduced in time, which will lead to the ineffective consumption of a large amount of electricity and waste of resources.

[0005] Second, a dedicated person is required to monitor and adjust the ventilation equipment, which not only increases labor costs, but also puts staff under high-intensity work pressure for a long time.

[0006] Therefore, we propose a coal mine local ventilation device to solve the above problems. Utility Model Content

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A local ventilation device for a coal mine, comprising:

[0009] A bearing plate is arranged at the entrance or ventilation shaft of a mine, a placement groove is fixedly arranged on one side of the bearing plate, a support plate is fixedly arranged on one side of the placement groove, a control panel is installed on the top of the support plate, and a power regulator is arranged on the upper side of the front of the support plate;

[0010] A ventilation mechanism is used to extract air from the mine and transport outside air into the mine, the ventilation mechanism includes a blower installed on the other side of the top of the bearing plate, the output end of the power regulator is electrically connected to the input end of the blower, the air outlet end of the blower penetrates the support plate and is connected to a guide pipe, the pipe body of the guide pipe is connected to a ventilation pipe at equal intervals, and the surface of the ventilation pipe is evenly distributed with ventilation holes;

[0011] A hanging member is used to hang the ventilation pipe on the top wall of the mine, the hanging member includes a mounting plate, connecting rods are fixedly arranged on both sides of the top of the mounting plate, a hook is hingedly connected to one end of the connecting rod away from the mounting plate, a hoop is fixedly arranged in the middle of the bottom of the mounting plate, and the guide pipe is slidably inserted into the inside of the hoop;

[0012] The gas concentration sensor is installed in the middle of the top of the installation plate. The input ends of the power regulator, the blower and the gas concentration sensor are all electrically connected to the output end of the control panel.

[0013] Furthermore, self-locking universal wheels are installed at the four corners of the bottom surface of the bearing plate, and push rods are fixed above both sides of the support plate.

[0014] Furthermore, rectangular notches are constructed at equal intervals on both sides of the placement groove, and the rectangular notches are adapted to the size of the mounting plate.

[0015] Furthermore, a dustproof net is arranged inside the ventilation pipe, and the dustproof net is cylindrical and fixedly arranged on the inner wall of the ventilation pipe.

[0016] Furthermore, the guide pipe is a corrugated pipe, and is threadedly connected to the air outlet end of the blower.

[0017] Furthermore, the clamp is composed of two elastic plastic plates, both of which are arc-shaped and are environmentally friendly to the outside of the guide tube.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The utility model adopts a combined design of a bearing plate, a support plate, a control panel, a power regulator, a ventilation mechanism, a suspension part, a gas concentration sensor and other components. The arranged gas concentration sensor can monitor the gas concentration in the mine in real time. When the gas concentration exceeds the set threshold, the control panel will automatically adjust the power of the blower through the power regulator, thereby changing the operating power of the ventilation mechanism to achieve a rapid increase in air volume, improve ventilation efficiency, and ensure the safety of miners. At the same time, the device operates under automatic control throughout the entire process, and there is no need for a dedicated person to monitor and adjust the ventilation equipment, which can greatly reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is another three-dimensional structural schematic diagram of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the suspension member of the utility model.

[0023] Figure numerals: 1. load-bearing plate; 2. placement groove; 3. support plate; 4. control panel; 5. power regulator; 6. ventilation mechanism; 601. blower; 602. guide pipe; 603. ventilation pipe; 6031. ventilation hole; 604. dustproof net; 7. hanging part; 701. mounting plate; 702. connecting rod; 703. hook; 704. clamp; 8. gas concentration sensor; 9. self-locking universal wheel; 10. push rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0025] The present application provides a local ventilation device for coal mines, which is mainly used to solve the problems of slow response speed and the need for dedicated personnel to monitor and adjust ventilation equipment in the prior art, and provides the following technical solutions. Figure 1-Figure 3 Make a detailed description:

[0026] A local ventilation device for a coal mine, comprising:

[0027] A bearing plate 1 is arranged at the entrance or ventilation shaft of a mine, a placement groove 2 is fixedly arranged on one side of the bearing plate 1, a support plate 3 is fixedly arranged on one side of the placement groove 2, a control panel 4 is installed on the top of the support plate 3, and a power regulator 5 is arranged on the upper side of the front of the support plate 3;

[0028] The ventilation mechanism 6 is used to extract air from the mine and transport outside air into the mine. The ventilation mechanism 6 includes a blower 601 installed on the other side of the top of the supporting plate 1. The output end of the power regulator 5 is electrically connected to the input end of the blower 601. The air outlet end of the blower 601 passes through the supporting plate 3 and is connected to a guide pipe 602. The pipe body of the guide pipe 602 is connected to a ventilation pipe 603 at equal intervals. The surface of the ventilation pipe 603 is evenly distributed with ventilation holes 6031.

[0029] The hanging member 7 is used to hang the ventilation pipe 603 on the top wall of the mine. The hanging member 7 includes a mounting plate 701. Connecting rods 702 are fixedly arranged on both sides of the top of the mounting plate 701. A hook 703 is hingedly connected to one end of the connecting rod 702 away from the mounting plate 701. A hoop 704 is fixedly arranged in the middle of the bottom of the mounting plate 701. The guide pipe 602 is slidably inserted into the inside of the hoop 704.

[0030] The gas concentration sensor 8 is installed in the middle of the top of the mounting plate 701 , and the input ends of the power regulator 5 , the blower 601 and the gas concentration sensor 8 are all electrically connected to the output end of the control panel 4 .

[0031] The specific implementation process and principle of the intelligent local ventilation device for coal mines:

[0032] The first step is to place the bearing plate 1 at the mine entrance or ventilation shaft;

[0033] The second step is to use the hanging member 7 to hang the ventilation pipe 603 on the top wall of the mine. The specific operation is to hook the hook 703 on one of the rails, reinforced concrete beams, lifting rings, wire ropes and steel plate holes on the top of the mine.

[0034] The third step is to take the guide tube 602 out of the placement slot 2 and then embed it into the clamp 704;

[0035] The fourth step is to turn on the blower 601. When the gas concentration exceeds the set threshold, the control panel 4 will automatically adjust the power of the blower 601 through the power regulator 5, thereby changing the operating power of the ventilation mechanism 6 to quickly increase the air volume and improve the ventilation efficiency. The working principle of the ventilation mechanism 6 is: use the rotation of the blower 601 to generate airflow, and transport the outside air into the mine or extract air from the mine through the guide pipe 602 and the connected ventilation pipe 603.

[0036] It should be noted that the gas concentration sensor 8, the blower 601 and the control panel 4 are all existing technologies, and their working principles and circuit connections are not described in detail.

[0037] like Figure 2 As shown, in some embodiments, self-locking universal wheels 9 are installed at the four corners of the bottom surface of the supporting plate 1, and push rods 10 are fixed on the upper sides of the supporting plate 3. More specifically, the self-locking universal wheels 9 are provided so that the device can be easily moved on various surfaces in the mine. The self-locking function ensures that the device can be stably locked after moving to the specified position to prevent sliding or movement during operation, thereby improving the stability and safety of the device. The push rod 10 is used to push or pull the entire ventilation device when needed, especially during initial installation or position adjustment in a mine with limited space.

[0038] like Figure 2 As shown, in some embodiments, rectangular notches are constructed at equal intervals on both sides of the placement slot 2, and the size of the rectangular notches is adapted to the size of the mounting plate 701. More specifically, the size and shape of the rectangular notches are specially designed to match the mounting plate 701, so that when the device is not in use, it can be used to stably store the mounting plate 701.

[0039] like Figure 2As shown, in some embodiments, a dustproof net 604 is provided inside the ventilation pipe 603, and the dustproof net 604 is cylindrical and fixed to the inner wall of the ventilation pipe 603. More specifically, the main function of the dustproof net 604 is to filter the air entering the ventilation pipe 603, and prevent dust, impurities and other particulate matter that may cause pipe blockage or affect ventilation efficiency from entering the ventilation system. The dustproof net 604 is designed in a cylindrical shape, and can completely cover the internal space of the ventilation pipe 603, ensuring that the air can be evenly filtered when passing through. This structure helps to improve the filtering efficiency.

[0040] like Figure 2 As shown, in some embodiments, the guide pipe 602 is a corrugated pipe, and is threadedly connected to the air outlet end of the blower 601. More specifically, the design of the corrugated pipe provides good flexibility and elasticity, so that the guide pipe 602 can adapt to the complex spatial layout and possible vibrations in the mine, and the corrugated shape helps to reduce the airflow resistance caused by the bending or angle changes of the pipe, thereby maintaining smooth airflow.

[0041] like Figure 2 As shown, in some embodiments, the clamp 704 is composed of two elastic plastic plates, both of which are arc-shaped and environmentally friendly to the outside of the guide tube 602. More specifically, the design of the clamp 704 makes installation and removal simple and quick, without the need for complicated tools or procedures, and is convenient for maintenance and replacement. Due to the flexibility of the elastic plastic plates, the clamp 704 can adapt to guide tubes 602 of different diameters, increasing its application range in ventilation devices of different models and sizes.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A local ventilation device for a coal mine, characterized in that: include: A bearing plate (1) is arranged at the entrance or ventilation shaft of a mine, a placement groove (2) is fixedly arranged on one side of the bearing plate (1), a support plate (3) is fixedly arranged on one side of the placement groove (2), a control panel (4) is installed on the top of the support plate (3), and a power regulator (5) is arranged on the upper front side of the support plate (3); A ventilation mechanism (6) is used to extract air from the mine and transport outside air into the mine, the ventilation mechanism (6) comprising a blower (601) installed on the other side of the top of the supporting plate (1), the output end of the power regulator (5) is electrically connected to the input end of the blower (601), the air outlet end of the blower (601) passes through the supporting plate (3) and is connected to a guide pipe (602), the pipe body of the guide pipe (602) is connected to a ventilation pipe (603) at equal intervals, and the surface of the ventilation pipe (603) is evenly distributed with ventilation holes (6031); A hanging member (7) is used to hang the ventilation pipe (603) on the top wall of the mine, the hanging member (7) comprising a mounting plate (701), connecting rods (702) are fixedly arranged on both sides of the top of the mounting plate (701), a hook (703) is hingedly connected to one end of the connecting rod (702) away from the mounting plate (701), a hoop (704) is fixedly arranged in the middle of the bottom of the mounting plate (701), and the guide pipe (602) is slidably inserted into the inside of the hoop (704); The gas concentration sensor (8) is installed in the middle of the top of the mounting plate (701), and the input ends of the power regulator (5), the blower (601) and the gas concentration sensor (8) are all electrically connected to the output end of the control panel (4).

2. A coal mine local ventilation device according to claim 1, characterized in that: Self-locking universal wheels (9) are installed at the four corners of the bottom surface of the bearing plate (1), and push rods (10) are fixedly provided above the two sides of the support plate (3).

3. A coal mine local ventilation device according to claim 1, characterized in that: Rectangular notches (201) are formed at equal intervals on both sides of the placement groove (2), and the rectangular notches (201) are adapted in size to the mounting plate (701).

4. A coal mine local ventilation device according to claim 1, characterized in that: A dustproof net (604) is arranged inside the ventilation pipe (603); the dustproof net (604) is cylindrical and fixedly arranged on the inner wall of the ventilation pipe (603).

5. A coal mine local ventilation device according to claim 1, characterized in that: The flow guide pipe (602) is a corrugated pipe, and is threadedly connected to the air outlet end of the blower (601).

6. A coal mine local ventilation device according to claim 1, characterized in that: The clamp (704) is composed of two elastic plastic plates, both of which are arc-shaped and are environmentally friendly to the outside of the guide tube (602).

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