Coal mine long-distance tunneling roadway ventilation system with monitoring and dust removal functions

Abstract

The invention discloses a coal mine long-distance tunneling roadway ventilation system with monitoring and dust removal functions. The coal mine long-distance tunneling roadway ventilation system comprises a plurality of arc-shaped gas distribution frames arranged in a tunneling roadway, an air supply pipe, an air return pipe, a track, a traveling trolley and a dust removal mechanism. Wherein a plurality of air feeders are uniformly arranged in the air supply pipe at intervals. The dust concentration sensor in the air return pipe is used for detecting the air quality in the local range, and based on data detected by the dust concentration sensor, the controller is used for driving the advancing trolley to move to the corresponding position along the track, and the dust removal mechanism on the advancing trolley is started for air draft filtering treatment. Wherein the air enters the dust removal box body through the air inlet and is firstly in contact with the first filter screen and the second filter screen; dust attached to the filter screen is conveyed from the vertical section to the inclined section below, and then the first eccentric vibration roller located on the inclined section is utilized to drive the first filter screen on the inclined section to vibrate, so that the dust is vibrated to fall into the bottom of the dust removal box body.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel ventilation systems, and in particular to a ventilation system for long-distance tunneling in a coal mine with monitoring and dust removal functions. Background Art

[0002] Conventional At present, with the in-depth development of underground mines and underground engineering construction, the construction of long-distance tunnels is increasing. In the construction of long-distance tunnels, as the tunnel excavation work progresses, the ventilation distance of the excavation and support working surface in the tunnel becomes longer and longer, and the ventilation difficulty becomes greater and greater. Therefore, the removal of blasting smoke and dust generated during the mucking process during excavation and the support process requires longer and longer ventilation time, and the ventilation effect is getting worse and worse. Especially in recent years, in order to speed up the construction progress and improve the mechanization level of construction, a large number of trackless internal combustion mucking transportation equipment are used in the tunnel excavation and support construction process, which leads to a large amount of oil smoke generated during the mucking transportation process, which seriously affects the air quality of the tunnel. The ventilation effect in tunnel construction not only directly affects the construction progress, but also directly affects the safety and health of the operators.

[0003] Among them, in the existing technology, although the tunnel can be ventilated, real-time monitoring is not performed, and dust removal is performed based on local detection, and the air quality in the tunnel cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to provide a ventilation system for a long-distance tunnel in a coal mine with monitoring and dust removal functions, so as to solve the problem of how to monitor and remove dust during ventilation of a long-distance tunnel in a coal mine.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a long-distance coal mine tunnel ventilation system with monitoring and dust removal functions, comprising a plurality of arc-shaped air distribution racks arranged in the tunnel, an air supply pipe penetrating the plurality of arc-shaped air distribution racks, an air return pipe arranged at the bottom of the arc-shaped air distribution racks, a track arranged below the arc-shaped air distribution racks, a traveling trolley limitedly arranged on the track, and a dust removal mechanism arranged on the traveling trolley;

[0007] A plurality of air supply fans are evenly spaced in the air supply duct; a plurality of exhaust fans and a plurality of dust concentration sensors are evenly spaced in the air return duct;

[0008] A plurality of wireless charging elements for supplying power to the traveling vehicle are arranged on the inner wall of the excavation tunnel.

[0009] Furthermore, the arc-shaped air distribution frame includes an arc-shaped groove and a V-shaped plate arranged in the arc-shaped groove, wherein two air distribution grooves are formed between the V-shaped plate and the arc-shaped groove.

[0010] Furthermore, the air supply duct is connected to the top of the arc-shaped air distribution rack, and an air outlet hole connected to the air distribution groove is opened on the air supply duct; a flow sensor is arranged in the air supply duct, and a controller is also arranged for adjusting the air supply fan at the nearest distance based on the detection data of the flow sensor.

[0011] Furthermore, a plurality of air extraction holes or air slits are evenly spaced on the outer peripheral wall of the return air duct.

[0012] Furthermore, the track is a small train track structure; track wheels adapted to the track are arranged at the bottom of the traveling trolley; an electric drive mechanism and an avionics control system are arranged on the traveling trolley, and a wireless signal receiving element for receiving the dust concentration sensor is arranged on the traveling trolley; the wireless charging element is an AGV wireless charging module; the wireless charging element includes a transmitting coil and a transmitting module, and a power distribution unit; a receiving coil, a receiving module, and a battery are arranged on the traveling trolley.

[0013] Furthermore, the dust removal mechanism includes a dust removal box arranged on the traveling trolley, an air inlet arranged on one end of the dust removal box, an air outlet arranged on the other end of the dust removal box, an induced draft fan arranged in the air outlet, a first filter screen and a second filter screen arranged in the dust removal box, and a plurality of first drive rollers for driving the first filter screen and a plurality of second drive rollers for driving the second filter screen arranged in the dust removal box; wherein motors for driving the first drive rollers and the second drive rollers respectively are arranged on the outside of the dust removal box.

[0014] Furthermore, a perforated baffle is provided in the dust removal box, wherein the perforated baffle, the air inlet, and the air outlet form a filtering channel for dust-laden air; wherein a plurality of reserved slots are provided on the perforated baffle for facilitating the passage of the first filter screen and the second filter screen respectively;

[0015] Wherein, one first transmission roller and one second transmission roller are arranged above the perforated baffle plate; and a plurality of the first transmission rollers and a plurality of the second transmission rollers are arranged below the perforated baffle plate;

[0016] The first filter screen is sleeved on each of the first transmission rollers to form a vertical section and an inclined section, wherein a first eccentric vibrating roller driven by a motor is arranged in the first filter screen of the inclined section; the first filter screen of the inclined section is located below the perforated baffle;

[0017] The second filter screen is mounted on each of the second transmission rollers, also forming a vertical section and an inclined section, wherein a second eccentric vibrating roller driven by a motor is arranged in the second filter screen of the inclined section; the second filter screen of the inclined section is located below the perforated baffle.

[0018] Furthermore, a conical bucket is arranged at the bottom of the dust removal box, and a discharge valve is arranged at the lowermost end of the conical bucket.

[0019] Compared with the prior art, the beneficial technical effects of the present invention are:

[0020] The present invention utilizes a dust concentration sensor in the return air duct to detect the air quality in a local area, wherein based on the detection data of the dust concentration sensor, a controller is utilized to drive the traveling trolley to move along the track to the corresponding position, and the dust removal mechanism thereon is activated to perform exhaust and filtering processing.

[0021] The air enters the dust removal box through the air inlet and first contacts the first filter screen and the second filter screen. The dust attached to the filter screen is transported from the vertical section to the inclined section below, and then the first eccentric vibration roller located in the inclined section is used to drive the vibration of the first filter screen in the inclined section, thereby vibrating the dust into the bottom of the dust removal box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the main installation structure of the ventilation system for long-distance tunneling in a coal mine with monitoring and dust removal functions of the present invention;

[0024] Figure 2 It is a schematic diagram of the air supply and return air ducts of the ventilation system of the long-distance tunneling tunnel of a coal mine with monitoring and dust removal functions of the present invention;

[0025] Figure 3 It is a schematic diagram of the air supply cross section of the ventilation system for long-distance tunneling in a coal mine with monitoring and dust removal functions according to the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of a return air duct in a ventilation system for a long-distance tunneling tunnel in a coal mine with monitoring and dust removal functions according to the present invention;

[0027] Figure 5 It is a schematic diagram of the installation structure of the dust removal mechanism in the ventilation system of the long-distance tunneling tunnel of the coal mine with monitoring and dust removal functions of the present invention;

[0028] Figure 6The present invention is a schematic diagram of the internal structure of the dust removal mechanism in the ventilation system of the long-distance tunneling tunnel of the coal mine with monitoring and dust removal functions.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. air supply duct; 101. air outlet; 102. air supply fan; 103. flow sensor; 2. arc-shaped air distribution rack; 201. air distribution groove; 202. V-shaped plate; 3. return air duct; 301. air exhaust hole; 302. air exhaust fan; 303. dust concentration sensor; 4. track; 5. traveling trolley; 501. track wheel; 502. electric drive mechanism; 6. dust removal mechanism; 601. air inlet; 602. air outlet; 603. first filter; 6031. first transmission roller; 6032. first eccentric vibrating roller; 604. second filter; 6041. second transmission roller; 6042. second eccentric vibrating roller; 605. discharge valve; 606. baffle with holes; 7. wireless charging element; 701. power distribution unit. DETAILED DESCRIPTION

[0030] The present embodiment discloses a ventilation system for long-distance tunnels in a coal mine with monitoring and dust removal functions, comprising a plurality of arc-shaped air distribution frames 2 installed in the tunneling tunnel, an air supply pipe 1 passing through the plurality of arc-shaped air distribution frames 2, a return air pipe 3 installed at the bottom of the arc-shaped air distribution frames 2, a track 4 installed below the arc-shaped air distribution frames 2, a traveling trolley 5 which moves on the track 4 in a limited position, and a dust removal mechanism 6 installed on the traveling trolley 5; wherein a plurality of air supply fans 102 are evenly spaced and installed in the air supply pipe 1; a plurality of exhaust fans 302 and a plurality of dust concentration sensors 303 are evenly spaced and installed in the return air pipe 3; wherein a plurality of wireless charging elements 7 for powering the traveling trolley 5 are installed on the inner wall of the tunneling tunnel.

[0031] When in use, the arc-shaped air distribution frame 2 can be used to support the air supply pipe 1; the air supply fan 102 in the air supply pipe 1 is used to continuously transport the fresh air from the outside into the tunnel; the return air pipe 3 and the exhaust fan 302 therein are used to continuously transport the dust-containing air or harmful gas inside to the outside; the dust concentration sensor 303 in the return air pipe 3 is used to detect the air quality in a local area, and based on the detection data of the dust concentration sensor 303, the controller is used to drive the traveling trolley 5 to move to the corresponding position along the track, and the dust removal mechanism 6 thereon is turned on to exhaust air.

[0032] In this embodiment, Figure 2 and Figure 3As shown, the arc-shaped air distribution rack 2 includes an arc-shaped groove and a V-shaped plate 202 installed in the arc-shaped groove, wherein two air distribution grooves 201 are formed between the V-shaped plate 202 and the arc-shaped groove; in this embodiment, the two air distribution grooves 201 connected to the air supply pipe 1 are also used to evenly disperse the air to the corresponding positions to achieve balanced airflow. The air supply pipe 1 is connected to the top of the arc-shaped air distribution rack 2, and an air outlet 101 connected to the air distribution groove 201 is opened on the air supply pipe 1; wherein a flow sensor 103 is installed in the air supply pipe 1, and a controller for adjusting the nearest air supply fan 102 based on the detection data of the flow sensor 103 is also installed; wherein the flow sensor 103 detects that the air flow passing through it is too small, and the downstream air supply fan 102 needs to be opened, so as to continuously provide stable fresh air to the lane.

[0033] like Figure 4 As shown, in this embodiment, a plurality of air extraction holes 301 or air gaps are evenly spaced on the outer peripheral wall of the return air duct 3, wherein the air from the lower layer is sent into the return air duct 3 by using the air extraction holes 301 or air gaps. The dust concentration sensor 303 includes a dust concentration detector and a dust detector. The dust concentration detector adopts a low-power modular design of an MCU chip, has intelligent sensor detection technology, an overall explosion-proof structure, and supports fixed installation. The dust detector, also known as a dust measuring instrument or a dust tester, is mainly used to detect the dust concentration in the ambient air.

[0034] like Figure 2 As shown, the track 4 is a small train track structure; a track wheel 501 adapted to the track 4 is installed at the bottom of the traveling trolley 5; an electric drive mechanism 502 and an avionics control system are installed on the traveling trolley 5, wherein specifically, the electric control drive of the electric drive mechanism 502 drives the track wheel 501 to move forward or backward; a wireless signal receiving element for receiving the dust concentration sensor 303 is installed on the traveling trolley 5; the wireless charging element 7 is an AGV wireless charging module; wherein the wireless charging element 7 includes a transmitting coil and a transmitting module, and a power distribution unit 701; a receiving coil, a receiving module, and a battery are installed on the traveling trolley 5; thereby, non-contact charging is achieved to ensure the safety of the underground mine tunnels.

[0035] like Figure 5As shown, in this embodiment, the dust removal mechanism 6 includes a dust removal box installed on the traveling trolley 5, an air inlet 601 opened at one end of the dust removal box, an air outlet 602 opened at the other end of the dust removal box, an induced draft fan installed in the air outlet 602, a first filter 603 and a second filter 604 installed in the dust removal box, and a plurality of first drive rollers 6031 for driving the first filter 603 and a plurality of second drive rollers 604 for driving the second filter 604 installed in the dust removal box; wherein motors for driving the first drive roller 6031 and the second drive roller 604 respectively are installed on the outside of the dust removal box.

[0036] When in use, an air inlet cone hopper is installed at the air inlet 601, and a filter is installed at the outermost side of the air inlet cone hopper to prevent larger particles from entering the dust removal box; the air enters the dust removal box through the air inlet 601 and first comes into contact with the first filter 603 and the second filter 604; in this embodiment, in order to ensure that the dust-laden air first passes through the filter; the ventilation width of the air inlet 601 is smaller than the width of the filter; thereby achieving dust filtering.

[0037] like Figure 6 As shown, in this embodiment, a perforated baffle 606 is installed in the dust removal box, wherein the perforated baffle 606, the air inlet 601, and the air outlet 602 form a filtering channel for dust-containing air; wherein a plurality of reserved grooves are provided on the perforated baffle 606 for facilitating the passage of the first filter 603 and the second filter 604; wherein a first transmission roller 6031 and a second transmission roller 604 are installed above the perforated baffle 606; wherein a plurality of the first transmission rollers 6031 and a plurality of the second transmission rollers 604 are installed below the perforated baffle 606; wherein The first filter screen 603 is sleeved on each of the first transmission rollers 6031 to form a vertical section and an inclined section, wherein a first eccentric vibration roller 6032 driven by a motor is installed in the first filter screen 603 of the inclined section; the first filter screen 603 of the inclined section is located below the perforated baffle 606; wherein the second filter screen 604 is sleeved on each of the second transmission rollers 604 to also form a vertical section and an inclined section, wherein a second eccentric vibration roller 6042 driven by a motor is installed in the second filter screen 604 of the inclined section; the second filter screen 604 of the inclined section is located below the perforated baffle 606.

[0038] During operation, as the first filter 603 rotates counterclockwise, the dust attached to the filter is transported from the vertical section to the inclined section below, and then the first eccentric vibration roller 6032 located in the inclined section is used to drive the vibration of the first filter 603 in the inclined section, so that the dust is vibrated to the bottom of the dust removal box; and during the vibration process, the first filter 603 in the vertical section is not disturbed; then, the cleaned first filter 603 continues to rotate to continue filtering dust; wherein the second filter 604 has the same working principle.

[0039] In this embodiment, a conical bucket is installed at the bottom of the dust removal box, and a discharge valve 605 is installed at the lower end of the conical bucket. By opening and closing the discharge valve 605, the dust deposited in the conical bucket is cleaned regularly.

[0040] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solutions of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A ventilation system for long-distance tunneling in coal mines with monitoring and dust removal functions, characterized in that: The invention comprises a plurality of arc-shaped air distribution frames (2) arranged in an excavation tunnel, an air supply pipe (1) passing through the plurality of arc-shaped air distribution frames (2), an air return pipe (3) arranged at the bottom of the arc-shaped air distribution frames (2), a track (4) arranged below the arc-shaped air distribution frames (2), a traveling trolley (5) limitedly arranged on the track (4), and a dust removal mechanism (6) arranged on the traveling trolley (5); A plurality of air supply fans (102) are evenly spaced apart in the air supply duct (1); a plurality of exhaust fans (302) and a plurality of dust concentration sensors (303) are evenly spaced apart in the air return duct (3); A plurality of wireless charging elements (7) for supplying power to the traveling vehicle (5) are arranged on the inner wall of the excavation tunnel.

2. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 1 is characterized in that: The arc-shaped air distribution frame (2) comprises an arc-shaped groove and a V-shaped plate (202) arranged in the arc-shaped groove, wherein two air distribution grooves (201) are formed between the V-shaped plate (202) and the arc-shaped groove.

3. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 2 is characterized in that: The air supply pipe (1) is connected to the top of the arc-shaped air distribution frame (2), and an air outlet hole (101) connected to the air distribution groove (201) is opened on the air supply pipe (1); a flow sensor (103) is arranged in the air supply pipe (1), and a controller is also arranged for adjusting the air supply fan (102) at the closest distance based on the detection data of the flow sensor (103).

4. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 3 is characterized in that: A plurality of air extraction holes (301) or air gaps are evenly spaced on the outer peripheral wall of the return air duct (3).

5. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 4 is characterized in that: The track (4) is a small train track structure; a track wheel (501) adapted to the track (4) is arranged at the bottom of the traveling trolley (5); an electric drive mechanism (502) and an avionics control system are arranged on the traveling trolley (5); a wireless signal receiving element for receiving the dust concentration sensor (303) is arranged on the traveling trolley (5); the wireless charging element (7) is an AGV wireless charging module; the wireless charging element (7) includes a transmitting coil and a transmitting module, and a power distribution unit (701); a receiving coil, a receiving module, and a battery are arranged on the traveling trolley (5).

6. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 5 is characterized in that: The dust removal mechanism (6) comprises a dust removal box arranged on the traveling trolley (5), an air inlet (601) arranged at one end of the dust removal box, an air outlet (602) arranged at the other end of the dust removal box, an induced draft fan arranged in the air outlet (602), a first filter screen (603) and a second filter screen (604) arranged in the dust removal box, and a plurality of first transmission rollers (6031) and a plurality of second transmission rollers (604) arranged in the dust removal box for driving the first filter screen (603) and for driving the second filter screen (604); wherein motors for driving the first transmission rollers (6031) and the second transmission rollers (604) are arranged outside the dust removal box.

7. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 6 is characterized in that: A perforated baffle (606) is provided in the dust removal box, wherein the perforated baffle (606), the air inlet (601), and the air outlet (602) form a filtering channel for dusty air; wherein a plurality of reserved slots are provided on the perforated baffle (606) for facilitating the passage of the first filter screen (603) and the second filter screen (604); Wherein, one first transmission roller (6031) and one second transmission roller (604) are arranged above the perforated baffle plate (606); and a plurality of first transmission rollers (6031) and a plurality of second transmission rollers (604) are arranged below the perforated baffle plate (606); The first filter screen (603) is sleeved on each of the first transmission rollers (6031) to form a vertical section and an inclined section, wherein a first eccentric vibration roller (6032) driven by a motor is arranged inside the first filter screen (603) of the inclined section; the first filter screen (603) of the inclined section is located below the perforated baffle (606); The second filter screen (604) is sleeved on each of the second transmission rollers (604), and also forms a vertical section and an inclined section, wherein a second eccentric vibration roller (6042) driven by a motor is arranged in the second filter screen (604) of the inclined section; the second filter screen (604) of the inclined section is located below the perforated baffle (606).

8. The long-distance tunnel ventilation system for coal mines with monitoring and dust removal functions according to claim 7 is characterized in that: A conical bucket is arranged at the bottom of the dust removal box, and a discharge valve (605) is arranged at the lower end of the conical bucket.

Images