Linkage dust fall system for fully mechanized excavation face and air return roadway of underground coal mine

Abstract

The utility model relates to the technical field of mine dust prevention and control, in particular to a linkage dust falling system for an underground coal mine fully-mechanized excavation face and an air return roadway, which comprises a heading machine group, a dust falling device, a dust falling device and a dust falling device, the dust removal unit comprises a plurality of spraying groups, and each spraying group is provided with a group of assembly integrated pipes; wherein each level of host is used for sending a wireless signal to identify a spraying state; the water path and the gas path are connected to two ball valves arranged in each stage of main machine through high-pressure rubber pipes, and the water outlet ends and the gas outlet ends of the ball valves are connected with the assembly integrated pipe. In the utility model, the heading machine set is equipped with the dust removal unit, so that the working environment in a fully-mechanized excavation face and an air return way can be obviously improved, the dust concentration is effectively controlled, equipment such as a heading machine can be protected, and the service life of the equipment is prolonged; according to the linkage system of the heading unit and the dust removal unit, the efficient and automatic dust removal effect is achieved by accurately controlling the spraying state, and a powerful guarantee is provided for underground coal mine safety production.

Description

Technical Field

[0001] The utility model relates to the technical field of mine dust prevention and control, in particular to a linkage dust reduction system for a fully mechanized excavation working face and a return air tunnel in an underground coal mine. Background Art

[0002] As society and the general public pay more and more attention to environmental protection issues, the problem of underground dust control, which seriously threatens the safety of coal mines and the health and safety of workers, has also received more and more attention and concern. While ensuring efficient and safe production, enterprises must also achieve green and clean production. Creating green mines has gradually become a development trend in the coal mining industry, and underground dust control projects are one of the key contents.

[0003] Judging from the practical research on mine dust prevention and control at home and abroad, domestic mine dust prevention equipment is simple and the technology is single, mainly relying on spray for dust control. The research direction is mainly focused on how to improve the efficiency of spray dust reduction, develop high-efficiency spray dust reduction equipment, and achieve dust control and reduction at the source.

[0004] At present, the dust control problem of mining working faces and belt tunnels has not been properly solved. The general method is to use the built-in spray in the tunnel boring machine. However, because the nozzle is too close to the cutting head, it is basically damaged, and the effect is generally static water pressure. The spray effect is general and cannot achieve the effect of reducing dust concentration.

[0005] In order to solve the above problems, a linkage dust reduction system for fully mechanized excavation working face and return air tunnel in underground coal mines was designed.

[0006] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0007] The utility model provides a linkage dust reduction system for a fully mechanized excavation working face and a return air tunnel in an underground coal mine, thereby effectively solving the problems in the background technology.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a linkage dust reduction system for the fully mechanized excavation working face and the return air tunnel in an underground coal mine, comprising:

[0009] A tunneling unit, comprising a tunneling machine body, a tunneling machine host and a plurality of hosts at various levels;

[0010] A dust removal unit, the dust removal unit comprising a plurality of spray groups, each of the spray groups being provided with a group of assembly integrated pipes;

[0011] Among them, a plurality of main machines at various levels are fixedly arranged at intervals on the comprehensive excavation working face and the return air lane wall, and the main machines at various levels are used to send wireless signals to identify the spray status;

[0012] The water circuit and the gas circuit are connected to the two ball valves built into the main engines at each level through high-pressure hoses, and the water outlet and gas outlet of the ball valve are connected to the assembly integrated pipe.

[0013] Furthermore, a start / stop sensor is provided on the power cable of the tunnel boring machine body, and the start / stop sensor is used to detect the working status of the tunnel boring machine body and transmit the data to the tunnel boring machine host, and the tunnel boring machine host automatically determines whether to turn on the spray.

[0014] Furthermore, the tunnel boring machine host computer exchanges data with the hosts at each level via wireless communication.

[0015] Furthermore, a radar sensor is provided above the secondary transport belt at the rear end of the tunnel boring machine body, and the radar sensor is used to detect the running status of the belt.

[0016] Furthermore, a high-pressure spray device is provided on the rocker arm of the tunnel boring machine body, and the high-pressure spray device is connected to the assembly integrated pipe through a laid waterway;

[0017] Wherein, the water curtain sprayed by the high-pressure spray device covers the cutting head and its surrounding area.

[0018] Furthermore, when the tunnel boring machine body is in operation, the high-pressure spray device stops working.

[0019] Furthermore, thermoluminescence control sensors are provided on the comprehensive excavation working face and the return air tunnel wall, and the thermoluminescence control sensors are used to detect whether pedestrians are passing by.

[0020] Furthermore, the several spray components arranged in the comprehensive excavation working face and the return air tunnel are controlled in a dispersed manner in time periods and regions.

[0021] The beneficial effects of the utility model are as follows: the main machines at each level are fixedly arranged on the comprehensive excavation working face and the wall of the return air tunnel, and a main machine is arranged at a certain distance, which helps to cover a wider working range of the excavation main machine. The main machines at each level have the ability to send wireless signals, which are used to identify the spray status to ensure that the dust removal unit can accurately and promptly respond to changes in dust concentration; the ball valve is a key component of fluid control, and its water outlet and air outlet are connected to the assembly dust collection pipe. By accurately controlling the flow of water and air, stable working conditions are provided for the spray group. When the dust concentration exceeds the preset value, the main machines at each level trigger the ball valve to operate, and the ball valve opens to allow water and air to flow to the spray group through the assembly integrated pipe. After receiving the water and air, the spray group immediately starts spraying and sprays water mist onto the working surface, effectively reducing the dust content in the air. The tunneling unit equipped with a dust removal unit can significantly improve the working environment in the comprehensive excavation working face and the return air tunnel. The dust concentration is effectively controlled, which helps to protect the equipment and extend its service life. The linkage system between the tunneling unit and the dust removal unit achieves efficient and automated dust reduction effects by precisely controlling the spray state, providing a strong guarantee for safe production underground in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a linkage dust suppression system for underground fully-mechanized excavation working faces and return air tunnels in coal mines;

[0024] Figure numerals: 1. Tunneling machine unit; 11. Tunneling machine body; 12. Tunneling machine host; 13. Hosts of each level; 13A. Ball valve; 13B. High-pressure hose; 2. Dust removal unit; 21. Spray group; 22. Assembly integrated pipe; 3. Thermoluminescence control sensor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 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.

[0028] like Figure 1 As shown, a linkage dust suppression system for a fully mechanized excavation working face and a return air tunnel in an underground coal mine comprises:

[0029] The tunneling unit 1 includes a tunneling machine body 11, a tunneling machine host 12 and a plurality of hosts 13 at various levels;

[0030] The dust removal unit 2 includes a plurality of spray groups 21, each of which is provided with a group of assembly integrated pipes 22;

[0031] Among them, a number of main machines 13 at various levels are fixedly arranged at intervals on the comprehensive excavation working face and the return air lane wall, and the main machines 13 at various levels are used to send wireless signals to identify the spray status;

[0032] The water circuit and the gas circuit are connected to two ball valves 13A built into the main engine 13 at each level through high-pressure hoses 13B, and the water outlet and gas outlet of the ball valve 13A are connected to the assembly integrated pipe 22.

[0033] The main machines 13 at each level are fixedly installed on the comprehensive excavation working face and the wall of the return air tunnel. A main machine is set at a certain distance, which helps to cover a wider working range of the excavation main machine. The main machines 13 at each level have the ability to send wireless signals. These signals are used to identify the spray status to ensure that the dust removal unit 2 can accurately and promptly respond to changes in dust concentration; the ball valve 13A is a key component of fluid control, and its water outlet and air outlet are connected to the assembly dust collection pipe. By accurately controlling the flow of water and air, stable working conditions are provided for the spray group 21. When the dust concentration exceeds the preset value, the main machines 13 at each level trigger the ball valve 13A to operate, and the ball valve 13A opens, allowing water and air to flow to the spray group 21 through the assembly integrated pipe 22. After receiving the water and air, the spray group 21 immediately starts spraying and sprays water mist onto the working surface, effectively reducing the dust content in the air.

[0034] Equipping the tunneling unit 1 with the dust removal unit 2 can significantly improve the working environment in the comprehensive excavation working face and the return air tunnel, and the dust concentration can be effectively controlled, which helps to protect the equipment and extend its service life. The linkage system of the tunneling unit 1 and the dust removal unit 2 achieves efficient and automated dust reduction effects by precisely controlling the spray state, providing a strong guarantee for safe production underground in coal mines.

[0035] In this embodiment, a start / stop sensor is provided on the power cable of the tunnel boring machine body 11, and the start / stop sensor is used to detect the working status of the tunnel boring machine body 11 and transmit the data to the tunnel boring machine host 12, and the tunnel boring machine host 12 automatically determines whether to turn on the spray.

[0036] The start / stop sensor will monitor the operating status of the tunnel boring machine body 11 in real time. When the tunnel boring machine body 11 is in normal operation, the start / stop sensor will maintain a specific signal output state, indicating that the tunnel boring machine body 11 is operating normally. Once the tunnel boring machine body 11 encounters abnormal conditions such as shutdown, overload, short circuit, etc., the start / stop sensor will immediately sense these changes and generate corresponding signals. These signals will be transmitted to the tunnel boring machine host 12, and the tunnel boring machine host 12 will automatically determine whether to turn on the spray.

[0037] The start-stop sensor is linked to the main engine 12 of the tunnel boring machine, which significantly improves the automation and intelligence level of dust removal, reduces manual intervention and operating costs, and improves safety and stability.

[0038] As a preferred embodiment of the above embodiment, the tunnel boring machine host 12 and the hosts 13 at each level exchange data via wireless communication.

[0039] The host computers 13 at each level are responsible for monitoring the working status and environmental parameters of their respective locations, including excavation progress, dust concentration, etc. These data are transmitted to the tunnel boring machine host computer 12 through wireless communication technology. After receiving these data, the tunnel boring machine host computer 12 will conduct centralized analysis and processing to understand the conditions in the comprehensive excavation working face and the return air tunnel. The tunnel boring machine host computer 12 can automatically send instructions to the relevant host computers 13 at each level to start or adjust the working status of the dust removal unit 2.

[0040] This intelligent control method ensures that the dust removal unit 2 can respond to environmental changes in a timely and effective manner, and also enhances the flexibility and reliability of the system.

[0041] In this embodiment, a radar sensor is provided above the secondary transport belt at the rear end of the tunnel boring machine body 11, and the radar sensor is used to detect the running status of the belt.

[0042] The radar sensor will continuously transmit radio waves to the belt and receive signals reflected from the belt. By analyzing and processing these signals, the radar sensor can accurately obtain the running speed, position, deviation or blockage of the coal mine on the belt, and other status information. When the running status of the belt is abnormal, such as too fast, too slow or deviation, the radar sensor can quickly identify and send corresponding signals, which are transmitted to the main engine 12 of the tunnel boring machine. According to the data provided by the radar sensor, the main engine 12 of the tunnel boring machine can automatically adjust the running speed of the belt, or trigger the alarm device to remind the operator to pay attention to abnormal conditions.

[0043] Radar sensors can realize real-time monitoring and early warning of the belt operation status, greatly improving the safety and reliability of belt operation. Radar sensors also have the characteristics of non-contact measurement, which will not cause wear or interference to the belt, ensuring the accuracy and stability of the measurement.

[0044] In this embodiment, a high-pressure spray device is provided on the rocker arm of the tunnel boring machine body 11, and the high-pressure spray device is connected to the assembly integrated pipe 22 through the laid water channel;

[0045] The water curtain sprayed by the high-pressure spray device covers the cutting head and its surrounding area.

[0046] The high-pressure spray device is connected to the assembly integrated pipe 22 through a pre-laid water channel to ensure a stable water supply. When the tunnel boring machine body 11 starts working, the high-pressure spray device is immediately started, and the high-pressure water mist sprayed out quickly forms a water curtain, tightly covering the cutting head and its surrounding area. When the cutting head is cutting coal, most of the dust generated will be quickly absorbed and settled by the water curtain, thereby greatly reducing the chance of dust spreading into the air.

[0047] The use of a high-pressure spray device significantly improves dust reduction efficiency, significantly improving the air quality of the working surface of the tunnel boring machine body 11. In addition, the covering of the water curtain also plays a certain cooling role, which helps to reduce the working temperature of the cutting head and prolong its service life.

[0048] In this embodiment, when the tunnel boring machine body 11 is in operation, the high-pressure spray device stops working.

[0049] The tunnel boring machine body 11 needs to perform operations such as coal cutting, which will generate a large amount of dust. When the tunnel boring machine body 11 is in a high-speed operation state, if the high-pressure spray device continues to work, it may interfere with the cutting head or other working parts, affecting the normal operation of the tunnel boring machine body 11 or causing damage to the spray device. In order to ensure that the tunnel boring machine body 11 can smoothly perform coal cutting operations, it is necessary to suspend the operation of the high-pressure spray device when the tunnel boring machine main body 12 is working.

[0050] Although the operation of the high-pressure spray device is suspended, the spray device can be restarted when the tunnel boring machine body 11 is not in operation to perform dust reduction treatment on the cutting head and its surrounding area, thereby ensuring that the dust concentration is effectively controlled.

[0051] As a preferred embodiment of the above embodiment, thermoluminescence control sensors 3 are also provided on the comprehensive excavation working face and the return air tunnel wall, and the thermoluminescence control sensors 3 are used to detect whether there are pedestrians passing by.

[0052] The thermoluminescence control sensor 3 is in a continuous working state, constantly monitoring the changes in infrared rays in the surrounding environment. When a pedestrian passes near the thermoluminescence control sensor 3, the human body emits specific infrared rays, and the thermoluminescence control sensor 3 can quickly capture this change. Once a pedestrian is sensed, the thermoluminescence control sensor 3 will immediately trigger the corresponding signal output. When the host 13 at each level receives the signal, it will immediately stop the spraying operation.

[0053] Thermoluminescence control sensor 3 can achieve high-precision pedestrian detection with a low false alarm rate, can accurately distinguish pedestrians from other objects or environmental factors, and has a fast response speed, and can detect the passage of pedestrians in real time, thereby meeting the needs of real-time monitoring and timely response.

[0054] In this embodiment, a plurality of spray groups 21 arranged in the comprehensive excavation working face and the return air tunnel are controlled in a timed and decentralized manner by time period and area.

[0055] The system will automatically control the start and shut down of each spray group 21 according to the preset schedule and area division, which greatly improves the dust reduction efficiency. By accurately controlling the working state of the spray group 21, it can ensure that dust reduction is carried out in a timely and effective manner in periods and areas with high dust concentrations, thereby significantly improving the working environment. This method also helps to save energy and water resources.

[0056] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A linkage dust suppression system for underground fully-mechanized excavation working faces and return air tunnels in coal mines, characterized in that: include: A tunneling unit, comprising a tunneling machine body, a tunneling machine host and a plurality of hosts at various levels; A dust removal unit, the dust removal unit comprising a plurality of spray groups, each of the spray groups being provided with a group of assembly integrated pipes; Among them, a plurality of main machines at various levels are fixedly arranged at intervals on the comprehensive excavation working face and the return air lane wall, and the main machines at various levels are used to send wireless signals to identify the spray status; The water circuit and the gas circuit are connected to the two ball valves built into the main engines at each level through high-pressure hoses, and the water outlet and gas outlet of the ball valve are connected to the assembly integrated pipe.

2. The linkage dust suppression system for underground fully mechanized excavation working face and return air tunnel of a coal mine according to claim 1 is characterized in that: A start / stop sensor is provided on the power cable of the tunnel boring machine body, and the start / stop sensor is used to detect the working status of the tunnel boring machine body and transmit the data to the tunnel boring machine host, and the tunnel boring machine host automatically determines whether to turn on the spray.

3. The linkage dust suppression system for underground fully-mechanized excavation working face and return air tunnel of a coal mine according to claim 2 is characterized in that: The tunnel boring machine host computer exchanges data with the hosts at each level via wireless communication.

4. The linkage dust suppression system for underground fully-mechanized excavation working face and return air tunnel of a coal mine according to claim 3 is characterized in that: A radar sensor is arranged above the secondary transport belt at the rear end of the tunnel boring machine body, and the radar sensor is used to detect the running status of the belt.

5. The linkage dust suppression system for underground fully-mechanized excavation working face and return air tunnel of a coal mine according to claim 4 is characterized in that: A high-pressure spray device is provided on the rocker arm of the tunnel boring machine body, and the high-pressure spray device is connected to the assembly integrated pipe through a laid water channel; Wherein, the water curtain sprayed by the high-pressure spray device covers the cutting head and its surrounding area.

6. The linkage dust suppression system for underground fully mechanized excavation working face and return air tunnel of a coal mine according to claim 5, characterized in that: When the tunnel boring machine body is in operation, the high-pressure spray device stops working.

7. The linkage dust suppression system for underground fully mechanized excavation working face and return air tunnel of a coal mine according to claim 1, characterized in that: Thermoluminescence control sensors are also provided on the comprehensive excavation working face and the return air tunnel wall, and the thermoluminescence control sensors are used to detect whether pedestrians are passing by.

8. The linkage dust suppression system for underground fully mechanized excavation working face and return air tunnel of a coal mine according to claim 1, characterized in that: The several spray components arranged in the comprehensive excavation working face and the return air tunnel are controlled in a dispersed manner in time periods and areas.

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