CN102562064B - Dust isolation and collection method for fully mechanized excavation face - Google Patents

Abstract

The invention discloses a dust-proof and dust-collecting method for a fully mechanized excavation working face, which comprises an upper cylinder (2) and a lower cylinder (3). The mouth (4), the lower cylinder is connected to the bell mouth of the lower chamber (5), and the pull-out dust collector (1) is arranged in the upper cylinder (2), the bell mouth of the upper chamber (4) is a negative pressure area, and the lower cylinder (3) A press-in type ventilator (11) is arranged in the center, and the bell mouth (5) of the lower chamber forms a positive pressure zone. Because the present invention adopts the above structure, the scope of pollution can be greatly reduced in use. At the same time, a rectangular air curtain for dust isolation is formed, which improves the effect of dust isolation and dust collection, and reduces the chance of workers suffering from pneumoconiosis.

Description

Dust Isolation and Collection Method of Fully Mechanized Excavation Working Face

technical field

The invention relates to a dust isolation and dust collection method, in particular to a dust isolation and dust collection method for fully mechanized excavation working faces in coal mines.

Background technique

At present, a simple dust collector is generally used for dust removal in the excavation work of the coal mine fully mechanized excavation face, and the commonly used one is generally a simple pull-out structure, which sucks the dust-containing airflow into the dust collector. The simple pressure type only has simple spraying and dilution functions, and cannot remove dust, so the scope of pollution is large. The simple suction dust collector can remove part of the dust, but it is only due to the short suction distance due to simple suction, which affects the dust collection and dust removal effect; Wide range of negative effects.

Contents of the invention

The purpose of the present invention is to provide a dust-separation and dust-collection method for fully mechanized excavation working face, which can reduce the pollution range and reduce coal miners suffering from pneumoconiosis.

The purpose of the present invention can be achieved by the following measures:

The present invention comprises an upper tube (2) and a lower tube (3). A lower tube (3) is arranged on the lower part of the upper tube (2). ), a pull-out dust collector (1) is arranged in the upper cylinder (2), a negative pressure area is formed in the upper cavity bell mouth (4), a press-in fan (11) is arranged in the lower cylinder (3), and the lower cavity Bell mouth (5) form positive pressure zone.

In the present invention, the air flow blown out in the bell mouth (5) of the lower cavity forms an air curtain to separate the cutting head (8) of the fully mechanized excavator (8) from the rotary arm (9), so that the cutting head (8) of the fully mechanized excavator forms an air curtain when cutting. Due to the positive pressure of the bell mouth of the lower chamber (5) and the negative pressure of the bell mouth of the upper chamber (4), the dust moves upwards and is sucked in the bell mouth of the upper chamber (4).

The present invention adopts the above structure, that is, the upper cylinder (2) and the lower cylinder (3) are arranged, and two layers of cavities are formed, and the dust collector (1) of the draw-out fan is arranged in the upper cavity (2), and the lower The air duct of the press-in fan (11) is arranged in the chamber (3). Thereby the suction lift of dust can be greatly increased in use, and meanwhile, a partial rectangular air curtain is also formed to separate the dust produced by the cutting drill bit (8) of the comprehensive excavator from the comprehensive excavator and the driver, and the dust can only move upwards Remove the upper suction hood by sucking it out. The effect of dust isolation, dust collection and dust removal is improved, and the scope of pollution is reduced.

According to needs, the shape of the bell mouth (4) of the upper tube is adapted to the shape of the roadway roof and the bell mouth (5) of the lower tube is set as a rectangle.

Description of drawings

Fig. 1 is the structure of the present invention and flow field sectional schematic diagram;

Fig. 2 is a schematic plan view of the present invention;

Fig. 3 is a three-dimensional effect diagram when the present invention works.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

Implementation example

As shown in the figure, the present invention includes an upper cylinder (2), a lower cylinder (3) is arranged below the upper cylinder (2), the upper cylinder (2) and the lower cylinder (3) and the roadway (6) of the excavation working face, and the A range of blowing out and suction is formed between the working face ends (7), so the pollution is only in this range, which is very small.

The working principle of the present invention is as follows:

The purpose of the present invention is to use the air flow field of the upper and lower chambers to concentrate the dust in the smallest range and collect and remove it. The upper chamber is equipped with a pull-out dust collector (1), and the lower chamber (3) is equipped with a blower blown out by a press-in fan, so that the jet flow in the lower chamber forms a rectangular air curtain and the suction flow in the upper chamber can surround the respirable dust in the air. Within the scope of the inner cavity, the dust collector is used for centralized treatment. The wind flow field diagram during work is shown in Figure 1. At this time, the dust is collected in the range of the ends of the upper and lower cylinders and the end of the tunneling face, reducing the scope of dust pollution. It uses the principle of the combined effect of the source flow of the jet flow field and the confluence of the suction flow field to control the dust by sucking up and blowing down, because the dust moves with the flow field of the wind.

Claims (2)

1. a dust-separation dust collecting method, is applied to excavation face in coal mine operation, it is characterized in that comprising following part:

(1) above fully-mechanized digging machine, back arranges top cylinder (2) and doffing (3)

Wherein, be provided with doffing (3) in top cylinder (2) bottom, become epicoele horn mouth (4) at top cylinder (2), form cavity of resorption horn mouth (5) at doffing (3); In top cylinder (2), be provided with pull-out type deduster (1), make epicoele horn mouth (4) form negative pressuren zone, in doffing (3), be mounted with forced ventilation machine (11), make cavity of resorption horn mouth (5) form zone of positive pressure;

(2) dust-separation control of dust

The distinguished and admirable formation air curtain blowing out in cavity of resorption horn mouth (5) separates the cutterhead of fully-mechanized digging machine (8) and its revoliving arm (9), the dust forming while making cutterhead (8) cut of fully-mechanized digging machine is under the malleation of cavity of resorption horn mouth (5) and the acting in conjunction of epicoele horn mouth (4) negative pressure, suck in epicoele horn mouth (4) thereby move upward, reach dust-separation dust collecting effect.

2. dust-separation dust collecting method according to claim 1, is characterized in that: the shape of epicoele horn mouth (4) and the shape of back adapt, and doffing horn mouth (5) is made as rectangle.

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