Dust-proof equipment for roadway under mine

Abstract

The dustproof equipment comprises a full-section water curtain framework, dustproof nets and a spraying pipe, the top of the full-section water curtain framework is of an arch structure, the dustproof nets are arranged on the two sides of the full-section water curtain framework, the spraying pipe is installed on one side of the top of the full-section water curtain framework in an arch shape, and a spraying head of the spraying pipe is installed towards the dustproof nets close to the top. The full-section water curtain framework is provided with a vacant notch at the position of the conveying belt, a door is arranged close to the middle of the full-section water curtain framework, a water collecting tank is arranged on the ground opposite to the full-section water curtain framework, and the dustproof nets are all arranged except the notch. Spraying is changed into full water curtain framework, double dust nets and spraying, water curtains are formed after spraying is conducted towards the dust screens, and then the dust falling effect can be greatly improved after three wind dust devices are installed.

Description

Technical Field

[0001] This utility model belongs to the field of dust control technology in underground mine roadways, and relates to a dust control device for underground mine roadways. Background Technology

[0002] When the roadheader is cutting normally in the mine, it generates a lot of dust. The conventional method is to use a full spray wall for dust suppression, but the overall dust concentration at the working face is 198.4 mg / m³, the respirable dust concentration is 142.5 mg / m³, and the overall dust concentration outside the third water curtain is 175.6 mg / m³, and the respirable dust concentration is 135.7 mg / m³, which is a poor dust suppression effect. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a dust control device for underground mine roadways to improve the dust reduction effect.

[0004] The solution implemented by this utility model is as follows: a dust control device for underground mine roadways, including a full-section water curtain frame, a dust control net, and a spray pipe. The top of the full-section water curtain frame is an arched structure, and dust control nets are arranged on both sides. The spray pipe is arched and installed on one side of the top of the full-section water curtain frame, with the spray head of the spray pipe facing the dust control net near the top. The full-section water curtain frame has an opening at the conveyor belt and a door near the middle. A water collection trough is set on the ground directly opposite the full-section water curtain frame. The dust control net is arranged throughout except for the opening.

[0005] Furthermore, a water collection tray is installed above the conveyor belt, with the water collection tray facing the notch and its width being greater than that of the conveyor belt. A drain pipe is installed at the bottom of the water collection tray, and the drain pipe is connected to the water collection trough.

[0006] Furthermore, the bottom of the aforementioned water collection tray is provided with two inverted U-shaped support frames. The two lower ends of the two support frames are fixedly connected on the same side by channel steel with the grooves facing downwards. The two channel steels are respectively clamped to the two idler roller support rods provided on both sides of the conveyor belt.

[0007] Furthermore, the aforementioned full-section water curtain frame is formed into a straight-wall semi-circular arch by being detachably fixed together with quarter-point pipes in both the horizontal and vertical directions.

[0008] Furthermore, the aforementioned spray pipe is fixedly connected to the roof of the tunnel, and the spray pipe is connected to the water pump through a pipeline.

[0009] Furthermore, the aforementioned dust control equipment for underground mine roadways also includes a dust sensor, which is installed on the top of the roadway in front of the water curtain.

[0010] Furthermore, the dust sensor is electrically connected to the controller, which is in turn connected to the water pump.

[0011] Furthermore, the aforementioned dust control equipment for underground mine roadways also includes a personnel identification module installed on the top of the roadway in front of the water curtain, and the personnel identification module is connected to the controller.

[0012] The effects of this utility model are as follows: This utility model changes the sprayer to a full water curtain frame + double dust net + sprayer. The sprayer sprays towards the dust net to form a water curtain. After installing three dust suppression devices, the dust suppression effect can be greatly improved. Through testing, the dust concentration at the working face of the roadheader during normal cutting is 196.8 mg / m³, the respirable dust concentration is 131.8 mg / m³, the comprehensive dust concentration outside the third water curtain is 88.6 mg / m³, and the respirable dust concentration is 33.5 mg / m³. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front view structure of the dust control device for the tunnel;

[0014] Figure 2 This is a schematic diagram of the water collection tray installation structure;

[0015] Figure 3 This is a side view schematic diagram of the dust control device for the tunnel. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] Example 1: As Figure 1-3 As shown, a dust control device for underground mine roadways includes a full-section water curtain frame 1, a dust net 2, and a spray pipe 3. The top of the full-section water curtain frame 1 is an arched structure, and dust nets 2 are arranged on both sides. The spray pipe 3 is arched and installed on one side of the top of the full-section water curtain frame 1, with the spray head of the spray pipe 3 facing the dust net 2 near the top. The full-section water curtain frame 1 has an opening 7 at the conveyor belt 4, and a door 5 is set near the middle. A water collection trough 6 is set on the ground directly opposite the full-section water curtain frame 1. The dust net 2 is arranged all the way except for the opening 7. The water collection trough 6 is a horizontal water channel with a width of 300mm and a depth of 300mm, so that water can be discharged along the water channel.

[0018] To prevent water from the water curtain from flowing into the water collection tray at the gap, a water collection tray 8 is installed above the conveyor belt 4. The water collection tray 8 is directly opposite the top of the gap 7 and is wider than the belt of the conveyor belt 4. A drain pipe 9 is installed at the bottom of the water collection tray 8 and is connected to the water collection trough 6. A water collection tray is installed between the full-section water curtain of the tunnel and the belt conveyor to prevent water from flowing onto the belt.

[0019] To stably support the water collection tray, two inverted U-shaped support frames 10 are installed at the bottom of the water collection tray 8. The two lower ends of the two support frames 10 are fixedly connected on the same side by channel steel 11 with the groove facing downward. The two channel steel 11 are respectively clamped to the two idler support rods 15 set on both sides of the conveyor belt 4. The two strip-shaped U-shaped channel steels are clamped to the idler support rods 15, which can achieve stable support. The container is also easy to adjust its position and can be disassembled and transported. It is easy to load and unload. The length of the section of the water collection tray facing the working surface is greater than the length of the other side, which facilitates the collection of additional water droplets generated by the spray on that side.

[0020] To facilitate relocation, the full-section water curtain frame 1 is made of four-point pipes that can be detachably fixed in the horizontal and vertical directions to form a straight wall semi-circular arch. This allows for easy relocation while ensuring the full-section dustproof net is installed. Moreover, the detachable structure enables a modular structure, which is more conducive to relocation (usually once a month).

[0021] For stable installation, the spray pipe 3 is fixedly connected to the roof slab 12 of the roadway with a clamp. The spray pipe 3 is connected to the water pump through a pipe. The water pump enables stable spraying from the spray pipe. The spray pipe is installed facing the full-section water curtain skeleton 1 of the working face.

[0022] In order to monitor dust concentration, a dust control device for underground mine roadways also includes a dust sensor 13. The dust sensor 13 is installed on the top of the roadway in front of the water curtain and can monitor dust concentration. When the monitored data meets the requirements to turn on the water pump, the water pump is controlled to turn on.

[0023] To achieve automatic dust removal, the dust sensor 13 is electrically connected to the controller, which is connected to the water pump. When the dust concentration is detected to be greater than the set value, the water pump is started to spray and form a dust-reducing water curtain, saving energy.

[0024] In order to automatically open and close when someone passes by, a dust control device for underground mine roadways also includes a personnel identification module 14 installed on the top of the roadway in front of the water curtain. The personnel identification module 14 uses a camera and is connected to a controller. When it detects that someone is about to pass by, it shuts down the water pump and stops the formation of the water curtain.

[0025] Before the modification: During normal cutting by the roadheader, the comprehensive dust concentration at the working face was 198.4 mg / m³, the respirable dust concentration was 142.5 mg / m³, the comprehensive dust concentration outside the third water curtain was 175.6 mg / m³, and the respirable dust concentration was 135.7 mg / m³.

[0026] After modification: During normal cutting by the roadheader, the dust concentration at the working face is 196.8 mg / m³, the respirable dust concentration is 131.8 mg / m³, the overall dust concentration outside the third water curtain is 88.6 mg / m³, and the respirable dust concentration is 33.5 mg / m³.

[0027] The overall dust reduction rate increased by 43.5%, and the respirable dust reduction rate increased by 69.8%.

[0028] calculate:

[0029] Before the upgrade: the overall dust reduction rate was (198.4-175.6) / 198.4≈11.5%, and the respirable dust reduction rate was (142.5-135.7) / 142.5≈4.8%;

[0030] After the upgrade: the overall dust reduction rate is approximately (196.8-88.6) / 196.8 ≈ 55%, and the respirable dust reduction rate is approximately (131.8-33.5) / 131.8 ≈ 74.6%.

[0031] The overall dust reduction rate increased by 55% - 11.5% = 43.5%; the respirable dust reduction rate increased by 74.6% - 4.8% = 69.8%.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A dust control device for underground mine roadways, characterized in that, The system includes a full-section water curtain frame (1), a dust net (2), and a spray pipe (3). The top of the full-section water curtain frame (1) is an arched structure, and dust nets (2) are arranged on both sides. The spray pipe (3) is an arched structure installed on one side of the top of the full-section water curtain frame (1), and the spray head of the spray pipe (3) is installed facing the dust net (2) near the top. The full-section water curtain frame (1) has an open gap (7) at the conveyor belt (4), and a door (5) is set near the middle. A water collection trough (6) is set on the ground directly opposite the full-section water curtain frame (1). The dust net (2) is arranged in all places except the gap (7).

2. The dust control equipment for underground mine roadways according to claim 1, characterized in that, A water collection tray (8) is installed above the conveyor belt (4). The water collection tray (8) is directly opposite the notch (7) and is wider than the belt of the conveyor belt (4). A drain pipe (9) is provided at the bottom of the water collection tray (8) and is connected to the water collection trough (6).

3. The dust control equipment for underground mine roadways according to claim 2, characterized in that, The bottom of the water collection tray (8) is provided with two inverted U-shaped support frames (10). The two support frames (10) are fixedly connected on the same side of the two lower ends by channel steel (11) with the groove facing down. The two channel steels (11) are respectively attached to the two idler support rods (15) set on both sides of the conveyor belt (4).

4. The dust control equipment for underground mine roadways according to claim 1, characterized in that, The full-section water curtain frame (1) is formed into a straight wall semi-circular arch by using four-point pipes that can be detachably fixed in the horizontal and vertical directions.

5. A dust control device for underground mine roadways according to claim 1, characterized in that, The spray pipe (3) is fixedly connected to the roof plate (12) of the tunnel, and the spray pipe (3) is connected to the water pump through a pipe.

6. A dust control device for underground mine roadways according to claim 5, characterized in that, It also includes a dust sensor (13), which is installed on the top of the tunnel in front of the water curtain.

7. A dust control device for underground mine roadways according to claim 6, characterized in that, The dust sensor (13) is electrically connected to the controller, which is connected to the water pump.

8. A dust control device for underground mine roadways according to claim 5, characterized in that, It also includes a personnel identification module installed on the top of the passageway in front of the water curtain, which is connected to the controller.

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