CN215566065U

CN215566065U - Colliery is combined and is dug working face dust fall system

Info

Publication number: CN215566065U
Application number: CN202022476343.9U
Authority: CN
Inventors: 周雪栋; 张晨曦; 郭勇
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2020-11-01
Filing date: 2020-11-01
Publication date: 2022-01-18
Anticipated expiration: 2030-11-01

Abstract

The utility model discloses a dust fall system for a fully mechanized excavation working face of a coal mine, which is a novel system combined by a foam system, a water mist system and a wind power system, wherein the foam system comprises a foam maker, a wind supply pipe and a spraying mechanism, and the system can effectively treat dust at a cutting head; the water mist system comprises a high-pressure water supply pipe and a water mist nozzle, the wind power system consists of a mine press-in type wind barrel, and the water mist system and the wind power system are combined to perform secondary capture on dust. The utility model processes the dust from the source and the transmission by stages by matching the three systems, greatly reduces the retention time of the dust in the air, and ensures a good working environment, thereby protecting the safety of life and property.

Description

Colliery is combined and is dug working face dust fall system

Technical Field

The utility model relates to the field of coal mine safety and environment, in particular to a dust fall system for a fully mechanized excavation working surface of a coal mine.

Background

In the coal mining process, the generation of dust threatens the physical health of workers and also accumulates to a certain extent to cause explosion, so that the loss of the safety of human life and property is caused, and therefore, the dust concentration can be effectively reduced, which is the important factor in the safety production of coal mines. At present, most dust fall methods used for fully-mechanized excavation working surfaces are used for processing dust by increasing water mist, and aiming at working surfaces with large dust concentration, due to the fact that dust hydrophobicity is strong and surface tension of water is large, the capture degree of the water mist on the dust is greatly reduced, an effective dust fall effect is not achieved, the larger water mist also influences the visual field of a driver, and wrong judgment is easy to occur.

Disclosure of Invention

The utility model aims to provide a novel dust settling system which not only can reduce the dust concentration at a dust source, but also can further treat dust generated during transportation.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a dust fall system for a fully mechanized excavation face of a coal mine comprises a foam system, a water mist system and a wind power system.

The foam system comprises a foam maker, an air supply pipe and a spraying mechanism; the foam maker is fixed on the fully-mechanized excavating machine body; the air supply pipe is connected to the foam maker; the spraying mechanism comprises a foam injection port, a foam nozzle and a spring mechanism; the foam injection port is arranged on the outer wall of the spraying mechanism; the foam nozzle is arranged on the outer wall of the other side of the spraying mechanism; the spring mechanism is arranged inside the spraying mechanism; the water mist system comprises a high-pressure water supply pipe and a water mist spray head; the high-pressure water supply pipe is divided into 2 branches, wherein one branch is connected with 3 water mist spray heads, and the other branch is connected with a one-way valve and connected with a foam maker; the one-way valve prevents the foam generated by the foam maker from entering the water pipe; the wind power system consists of a mine press-in type wind barrel; the forced air duct is arranged on one side of the roadway.

The spraying mechanism is arranged on the telescopic arm of the roadheader; the spraying mechanism is in a hollow cylindrical shape; the foam nozzle and the spraying machine form a certain included angle.

The 3 water mist nozzles are arranged on one side of the development machine body; the first water mist spray head faces to a fully mechanized excavating surface; the second water spray nozzle and the high-pressure water supply pipe form an angle of 45 degrees to spray water mist along the flowing direction of dust, and the third water spray nozzle faces the tail of the heading machine and forms an angle of 60 degrees with the high-pressure water supply pipe to perform spray dust settling on a small part of dust which is not captured in the front.

Compared with the prior art, the utility model has the following beneficial effects: the original water mist spraying device at the cutting head is changed into a device for spraying foam, the foam spraying device is improved, and a spring mechanism is added into the device, can play a role in adjusting the uniformity of the foam and is beneficial to uniformly spraying the foam; and go into the dryer at entry driver one side pressurization, add three water smoke shower nozzle in one side in addition, spraying mechanism sprays the foam when entry driving machine during operation, the foam wraps up the dust, make its quick landing, the effect is better than the water smoke and removes dust, in addition when operation mechanism during operation, because the effect of dryer, make the dust that the foam failed to catch and the dust that the operation of operation mechanism produced all blown entry driving machine fuselage opposite side, carry out the secondary through water smoke shower nozzle and catch the dust fall, the effect of dust removal has further been improved, improve workman's operational environment greatly.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of a spray mechanism.

Fig. 3 is a schematic view of the connection of the water mist head.

In the figure: 1-a cutting head; 2-a telescopic arm; 3-a spraying mechanism; 4-foam nozzle; 5-foam injection port; 6-a spring mechanism; 7, pressing in type wind cylinders; 8-water mist spray head; 9-high pressure water supply pipe; 10-a foam maker; 11-driver position; 12-air supply pipe; 13-a one-way valve; 14-fully-mechanized excavating machine; 15-cantilever; 16 — a foam system; 17-water mist system; 18-wind power system.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1-3, a coal mine fully mechanized excavation face dust fall system comprises: including a foam system 16, a water mist system 17 and a wind system 18.

The foam system 16 comprises a foam maker 10, an air supply pipe 12 and a spraying mechanism 3; the foam maker 10 is fixed on the body of the roadheader 14; the air supply pipe 12 is connected to the foam maker 10; the spraying mechanism 3 comprises a foam injection port 5, a foam nozzle 4 and a spring mechanism 6; the foam injection port 5 is arranged on the outer wall of the spraying mechanism 3; the foam nozzle 4 is arranged on the outer wall of the other side of the spraying mechanism 3; the spring mechanism 6 is arranged inside the spraying mechanism 3; the water mist system 17 comprises a high-pressure water supply pipe 9 and a water mist spray head 8; the high-pressure water supply pipe 9 is divided into 2 branches, one branch is connected with 3 water mist nozzles 8, and the other branch is connected with a one-way valve 13 and connected with a foam maker 10; the check valve 13 prevents the foam generated from the foam maker 10 from entering the high pressure water supply pipe 9; the wind power system 18 consists of a mine press-in type wind barrel 7; the forced air duct 7 is arranged on one side of the roadway.

The spraying mechanism 3 is arranged on the comprehensive digging machine telescopic arm 2; the spraying mechanism 3 is hollow and cylindrical; the foam nozzle 4 and the spraying mechanism 3 form a certain included angle.

The 3 water mist nozzles 8 are arranged on one side of the body of the roadheader 14; the first water mist spray head 8 faces the fully mechanized excavating surface; the second water mist spray nozzle 8 and the high-pressure water supply pipe 9 form an angle of 45 degrees to spray water mist along the flowing direction of dust, and the third water mist spray nozzle 8 faces the tail of the heading machine 14 and forms an angle of 60 degrees with the high-pressure water supply pipe 9 to spray and reduce dust of a small part of dust which is not collected in the front.

The working principle of the utility model is as follows: when the roadheader 14 works, high-pressure water is injected through the high-pressure water supply pipe 9, enters the foam maker 10 through the one-way valve 13, opens the air supply pipe 12, reacts with the foaming agent in the foam maker 10, enters the spraying mechanism 3, and is sprayed out through the foam nozzle 4, so that dust generation is effectively inhibited at the root of the road, and the sight of a driver of the roadheader is improved. Open forced dryer 7 simultaneously, forced dryer 7 not only can provide fresh air current to the workplace, can also blow the dust that the foam was not caught to the machine 14 opposite side of digging fully, carries out the secondary through water smoke shower nozzle 8 and catches the dust fall, reaches good dust fall effect.

Claims

1. A dust fall system for a fully mechanized excavation face of a coal mine comprises a foam system, a water mist system and a wind power system, and is characterized in that the foam system comprises a foam maker, an air supply pipe and a spraying mechanism; the foam maker is fixed on the fully-mechanized excavating machine body; the air supply pipes are connected to two ends of the foam maker; the spraying mechanism comprises a foam injection port, a foam nozzle and a spring mechanism; the foam injection port is arranged on the outer wall of the spraying mechanism; the foam nozzle is arranged on the outer wall of the other side of the spraying mechanism; the spring mechanism is arranged inside the spraying mechanism; the water mist system comprises a high-pressure water supply pipe and a water mist spray head; the high-pressure water supply pipe is divided into 2 branches, wherein one branch is connected with 3 water mist spray heads, and the other branch is connected with a one-way valve and connected with a foam maker; the one-way valve prevents the foam generated by the foam maker from entering the water pipe; the wind power system consists of a mine press-in type wind barrel; the forced air duct is arranged on one side of the roadway.

2. The coal mine fully mechanized excavation face dust fall system according to claim 1, characterized in that: the spraying mechanism is arranged on the telescopic arm of the roadheader; the spraying mechanism is in a hollow cylindrical shape; the foam nozzle and the spraying machine form a certain included angle.