CN203584430U - Novel coal mining machine control dust falling device - Google Patents

Abstract

The utility model discloses a novel coal mining machine control and dust reduction device, which is characterized in that: it includes an installation and fixing seat (2), and the installation and fixing seat (2) is fixed on the side of the coal mining machine walking part (1). The front end of the fixed seat (2) is provided with a connecting part (3), and the connecting part (3) is covered with a spray part (4), and the spray part (4) is located under the side of the front drum (1a) of the shearer, Nozzles (5) are arranged on the lower side of the spraying part (4) and the side facing the front drum (1a) of the coal shearer, and the spraying part (4) is provided with an air inlet or a water inlet (4a), The air inlet or water inlet (4a) communicates with all nozzles (5) through pipes. The utility model adds a dust control device to the shearer, which integrates dust control, dust suppression and dust removal, and greatly reduces the dust concentration at the driver's place of the shearer and at the 10m downwind side of the fuselage. The total dust reduction efficiency is greater than 90%. The dust suppression efficiency of permanent dust is greater than 80%.

Description

New Coal Shearer Controlled Dust Reduction Device

technical field

The utility model relates to an additional part of a coal mining machine, in particular to a novel coal mining machine controlled dust suppression device.

Background technique

Dust produced by shearer cutting coal and collapsing is the most important and most difficult dust source point in fully mechanized mining face at present. When the shearer is cutting coal against the wind, the front drum of the shearer, that is, the windward side drum, cuts the top coal, and the broken coal body falls from a high place to the front scraper conveyor, and the impact generates a large amount of dust. It moves downwind with the wind and is blocked by the cutting motor. The dust-laden air flows over the cable trough and diffuses to pollute the driver's work space. It is measured that the dust concentration at the driver, that is, in the middle of the shearer, can reach 2000-5000 mg/m3 when cutting coal against the wind. It seriously threatens the physical and mental health of underground workers and the safe production of coal mines.

At present, most of the domestic coal cutting dust prevention measures are aimed at the front and rear drums of the coal mining machine, mainly including the secondary negative pressure spray dust suppression of the coal mining machine and the dust source tracking spray dust suppression, and the control of the dust generated by the coal mining machine collapse There are two main ways. First, hang a dust curtain on the outside of the front drum of the shearer to prevent the dust from spreading to the driver's area; second, install a nozzle at the lower part of the rocker arm of the front drum of the shearer to change the outlet position of the cooling water so that it is aligned with the Impact the dust-generating area to spray. However, the above two methods still have some deficiencies in the process of field use. The former is easily damaged, has a short service life, and only has the function of dust control, and cannot settle dust; the latter has a short spray range and low atomization degree, so it cannot reach In dust producing areas, the effect of dust suppression is limited.

Utility model content

The technical problem to be solved by the utility model is to provide a new type of coal mining machine controlled dust reduction device with spraying, dust control, dust reduction, telescopic functions and better effect.

The technical scheme of the utility model is as follows: a new type of coal mining machine control dust suppression device, characterized in that it includes an installation and fixing seat (2), and the installation and fixing seat (2) is fixed on the side of the coal mining machine walking part (1) , the front end of the installation and fixing seat (2) is provided with a connecting part (3), and the connecting part (3) covers the spraying part (4), and the spraying part (4) is located at the front drum (1a) of the coal mining machine Below the side, nozzles (5) are arranged on the lower side of the spraying part (4) and the side facing the front drum (1a) of the shearer, and the spraying part (4) is provided with an air inlet or a water inlet ( 4a), the air inlet or water inlet (4a) communicates with all nozzles (5) through pipes.

Using the above technical scheme, when in use, connect the pressure water pipe or the air pipe to the air inlet or water inlet of the spraying part, fix the spraying part and the connecting part through the bolt, open the pressure water pipe and the air pipe, and open the pressure water pipe and the air pipe on the lower side of the spraying part and toward the coal mine. Spray is formed on one side of the wall. By adjusting the direction of the nozzle, adjusting the water pressure and air pressure to change the parameters of the mist flow, a reasonable spray is formed. The mist flow formed by the spray on the lower side prevents the dust generated by the impact of the front drum of the shearer from cutting coal and falling to the driver and the driver. The sidewalk spreads, and the mist flow formed by the inner spray (towards the side of the shearer's front drum) guides the dust to travel backwards along the side of the coal wall. The utility model forms a reasonable mist flow in a suitable area under the front drum side of the coal mining machine, guides the dust generated by the impact of the collapse to move along the side of the coal wall, and effectively settles, reducing the diffusion of the dust-laden airflow to the driver's side. When the shearer passes through the end, the spray part can be retracted and fixed with the connecting part through the bolt to play a telescopic function.

In the above technical solution: the spray part (4) is in the shape of a hollow strip, the length of the spray part (4) is 1-3m, and the water inlet or air inlet (4a) is close to the spray part (4) At the left end, the left part of the spray part (4) is also provided with a radial pin hole, and the pipe connecting the air inlet or water inlet (4a) and the nozzle (5) is located in the spray part (4); the connection The part (3) is in the shape of a strip, the length of the connecting part (3) is 1-3m, and a radial pin hole is opened on the connecting part (3) every 0.1-0.5m, and the connecting part ( 3) and the spray part (4) are fixed by bolts.

In the above technical solution: the fixing seat (2), the connecting part (3) and the spraying part (4) are all made of 5-20mm steel plates.

In the above technical solution: the fixed seat (2) is fixed to the running part (1) of the coal mining machine by means of bolts or welding, and the fixed seat (2) and the connecting part (3) are fixed by bolts. When the shearer is overhauled, the connecting part and the fixed seat can be broken down to facilitate transportation and overhaul.

In the above technical solution: the nozzles (5) include low-pressure nozzles, high-pressure nozzles and compressed air nozzles.

Beneficial effects: the utility model adds a dust control device on the shearer, which integrates dust control, dust suppression and dust removal, greatly reduces the dust concentration at the driver of the shearer and at the 10m downwind side of the fuselage, and the total dust reduction efficiency is greater than 90%, and the dust suppression efficiency of respirable dust is greater than 80%.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the top view of Fig. 1;

Figure 3 is a distribution diagram of the pipelines in the spray unit.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1, as shown in Figures 1-3, the new coal mining machine control dust suppression device of the present utility model is mainly composed of mounting and fixing seats 2, connecting parts 3, spraying parts 4 and nozzles 5, etc., and the installing and fixing seats 2 Fixed on the side of the shearer running part 1, the fixed seat 2 is fixed with the shearer running part 1 by means of bolts or welding, and the shearer and its shearer running part 1 are all prior art, I won't go into details here. The fixing seat 2, the connecting part 3 and the spraying part 4 are all made of 5-20 mm steel plates.

The front end of the fixing base 2 is provided with a connecting part 3, and the fixing base 2 and the connecting part 3 are fixed by bolts. The connecting part 3 is in the shape of a strip, the length of the connecting part 3 is 1-3m, and a radial pin hole is opened on the connecting part 3 every 0.1-0.5m.

The connecting part 3 covers the spraying part 4, and the spraying part 4 is located under the side of the front drum 1a of the coal mining machine. The spraying part 4 is in the shape of a hollow strip, and the length of the spraying part 4 is 1-3m, close to the spraying part The left end of 4 is provided with water inlet or air inlet 4a, and the left part of described spray part 4 is also provided with a radial bolt hole; Inside) there are nozzles 5, which include low-pressure nozzles, high-pressure nozzles and compressed air nozzles. In order to ensure that the dust control device adapts to different working surface environments, the spray direction can be adjusted. The air inlet or water inlet 4a passes through the pipeline It communicates with all nozzles 5, and all pipelines are located in the spray part 4, and the connecting part 3 and the spray part 4 are fixed by bolts.

Claims (5)

1. A new type of coal mining machine control dust suppression device, characterized in that: it includes an installation and fixing seat (2), and the installation and fixing seat (2) is fixed on the side of the coal mining machine running part (1), and the installation and fixing seat (2) The front end of (2) is provided with a connecting part (3), the connecting part (3) covers the spraying part (4), and the spraying part (4) is located under the side of the front drum (1a) of the shearer, and the spraying part (4) Nozzles (5) are arranged on the lower side of the part (4) and the side facing the front drum (1a) of the coal shearer, and the spray part (4) is provided with an air inlet or a water inlet (4a), and the inlet The air port or water inlet (4a) communicates with all nozzles (5) through the pipeline located in the spray part (4). 2. According to claim 1, the new coal mining machine controlled dust suppression device is characterized in that: the spray part (4) is hollow and strip-shaped, the length of the spray part (4) is 1-3m, and the water inlet Or the air inlet (4a) is close to the left end of the spray part (4), and the left part of the spray part (4) is also provided with a radial pin hole, and the air inlet or water inlet (4a) and the nozzle (5 ) is located in the spray part (4); the connecting part (3) is in the shape of a long strip, the length of the connecting part (3) is 1-3m, and the connecting part (3) has an interval of 0.1-0.5 m is provided with a radial pin hole, and the connecting part (3) and the spray part (4) are fixed by a pin. 3. According to claim 1 or 2, the new coal mining machine controlled dust suppression device is characterized in that: the fixed seat (2), the connecting part (3) and the spraying part (4) are all made of 5-20mm steel plate. 4. According to claim 1 or 2, the new coal mining machine control and dust suppression device is characterized in that: the fixed seat (2) is fixed to the coal mining machine running part (1) by means of bolts or welding, and the fixed seat (2) (2) and connecting parts (3) are fixed with bolts. 5. According to claim 1 or 2, the new coal mining machine controlled dust suppression device is characterized in that: the nozzle (5) includes a low-pressure nozzle, a high-pressure nozzle and a compressed air nozzle.

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