阅读说明：本技术 一种跟踪采煤机尘源自动控风除尘系统及方法 (Automatic air control and dust removal system and method for tracking dust source of coal mining machine ) 是由 马威 李德文 张设计 胥奎 莫金明 陈芳 庄学安 黎志 赵中太 杨俊磊 刘勇 于 2021-08-19 设计创作，主要内容包括：本发明涉及一种跟踪采煤机尘源自动控风除尘系统及方法,属于煤矿粉尘治理技术领域,包括控制单元和若干沿工作面间隔布置且安装在巷道液压支架上的捕尘帘,以及设置在采煤机上的机载除尘器；控制单元包括设置在采煤机上的信号发射器和设置在捕尘帘上的信号接收器,以及与信号接收器相连的控制器；信号接收器用于接收来自信号发射器发出的采煤机位置信息,并将采煤机位置信息发送至控制器；控制器根据采煤机位置信息控制捕尘帘的状态,以使采煤机始终处于由两个处于伸出状态的捕尘帘围成的空间内。本发明能一定程度上降低采煤机附近区域风速,降低粉尘扩散速度,进而有效提高机载除尘器的抽尘净化效率。(The invention relates to an automatic air-control dust removal system and method for tracking a dust source of a coal mining machine, belonging to the technical field of coal mine dust control, and comprising a control unit, a plurality of dust catching curtains which are arranged at intervals along a working surface and are arranged on a roadway hydraulic support, and an airborne dust remover arranged on the coal mining machine; the control unit comprises a signal transmitter arranged on the coal mining machine, a signal receiver arranged on the dust catching curtain and a controller connected with the signal receiver; the signal receiver is used for receiving the position information of the coal mining machine sent by the signal transmitter and sending the position information of the coal mining machine to the controller; the controller controls the state of the dust catching curtains according to the position information of the coal mining machine, so that the coal mining machine is always positioned in a space surrounded by the two dust catching curtains in the extending state. The invention can reduce the wind speed of the area near the coal mining machine to a certain extent, reduce the dust diffusion speed and further effectively improve the dust extraction and purification efficiency of the airborne dust remover.)

1. The utility model provides a trail automatic accuse wind dust pelletizing system of coal-winning machine dust source which characterized in that: the device comprises a control unit, a plurality of dust catching curtains which are arranged at intervals along a working surface and are arranged on a roadway hydraulic support, and a spraying device for washing the dust catching curtains; the control unit comprises a signal transmitter arranged on the coal mining machine, a signal receiver arranged on the dust catching curtain and a controller connected with the signal receiver; the signal receiver is used for receiving the position information of the coal mining machine sent by the signal transmitter and sending the position information of the coal mining machine to the controller; the controller controls the states of the dust catching curtains according to the position information of the coal mining machine, so that the dust catching curtains positioned at the front side and the rear side of the coal mining machine are in an extending state, and the dust catching curtains at other positions belong to a retracting state, so that the coal mining machine is always positioned in a space surrounded by the two dust catching curtains in the extending state; the device also comprises an onboard dust remover arranged on the coal mining machine so as to intensively extract dust and purify an area surrounded by the dust catching curtains positioned at two sides of the coal mining machine.

2. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 1, wherein: the spraying device comprises first nozzles which are arranged on two sides of the dust catching curtain and the nozzles face the dust catching curtain, and the nozzles of the first nozzles are inclined relative to the dust catching curtain so as to increase the effective spraying area of the first nozzles.

3. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 1, wherein: and the spraying device is connected with the control unit to wash the dust catching curtain according to set time and frequency.

4. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 1, wherein: the dust catching curtain comprises a dust catching curtain body, the upper end of the dust catching curtain body is fixed on a scroll, and the scroll is rotatably connected to a roadway hydraulic support and fixedly connected with a driving device fixed on the roadway hydraulic support.

5. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 4, wherein: still including the box cover that encircles the spool setting, the opening of box cover is down in order to dodge the dust catching curtain body.

6. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 4, wherein: a plurality of second nozzles are also included, arranged axially along the reel, to wet the dust catching web in real time.

7. The automatic air-control dust-removal system for tracking the dust source of the coal mining machine as claimed in claim 6, wherein: the second nozzle is located within the spool.

8. An automatic air control dust removal method for tracking dust sources of coal mining machines is characterized in that: the automatic dust collecting device is characterized in that the roadway hydraulic supports arranged at intervals along the working face are used for arranging the dust collecting curtains capable of automatically zooming, the dust collecting curtains positioned on the front side and the rear side of the coal mining machine automatically extend out through the control unit, the rest dust collecting curtains are in a retraction state, the dust collecting curtains can be switched over along with the movement of the coal mining machine, the coal mining machine is always positioned in a space surrounded by the two dust collecting curtains in the extension state, and the regions surrounded by the dust collecting curtains positioned on the two sides of the coal mining machine are subjected to concentrated dust extraction and purification through the airborne dust collector arranged on the coal mining machine.

Technical Field

The invention belongs to the technical field of coal mine dust control, and relates to an automatic air control and dust removal system and method for tracking a coal mining machine dust source.

Background

In recent years, along with the continuous improvement of the performance of coal mining equipment, the mining speed of a coal mine is continuously accelerated, the productivity is continuously improved, and the problem of mine dust pollution is increasingly prominent. The fully mechanized coal mining face is always the key point and the difficulty of dust prevention and control of the coal mine.

Two dust sources of coal mining machine roller coal cutting dust production and adjacent side guard plate gap dust falling of the descending column moving frame are superposed and quickly diffused under the action of wind flow, so that the whole fully mechanized mining surface is diffused, and the harm is very serious. According to the field actual measurement, the concentration of the total dust on the fully mechanized coal mining face exceeds 4000mg/m under the condition of no dustproof measure³Seriously affecting the physical and psychological health of miners and restricting the safe production of coal mines.

At present, the treatment technologies for the dust source mainly include a coal mining machine dust source tracking spray dust falling technology, a coal mining machine dust-containing airflow control technology, a hydraulic support spray dust falling technology and the like. The prior art can reduce the total dust and the respirable dust of the fully mechanized mining face by more than 85 percent and 70 percent, but still can not effectively solve the dust problem of the fully mechanized mining face, and no effective treatment measures are available at home and abroad at present.

Disclosure of Invention

In view of the above, an object of the present application is to provide an automatic air-control dust-removing system and method for tracking a dust source of a coal mining machine, so as to reduce the wind speed in an area near the coal mining machine, reduce the dust diffusion speed, and further effectively improve the dust extraction and purification efficiency of an airborne dust remover.

In order to achieve the purpose, the invention provides the following technical scheme:

an automatic air-control dust removal system for tracking dust sources of a coal mining machine comprises a control unit, a plurality of dust catching curtains which are arranged at intervals along a working face and are installed on a roadway hydraulic support, and a spraying device for flushing the dust catching curtains; the control unit comprises a signal transmitter arranged on the coal mining machine, a signal receiver arranged on the dust catching curtain and a controller connected with the signal receiver; the signal receiver is used for receiving the position information of the coal mining machine sent by the signal transmitter and sending the position information of the coal mining machine to the controller; the controller controls the states of the dust catching curtains according to the position information of the coal mining machine, so that the dust catching curtains positioned at the front side and the rear side of the coal mining machine are in an extending state, and the dust catching curtains at other positions belong to a retracting state, so that the coal mining machine is always positioned in a space surrounded by the two dust catching curtains in the extending state; the device also comprises an onboard dust remover arranged on the coal mining machine so as to intensively extract dust and purify an area surrounded by the dust catching curtains positioned at two sides of the coal mining machine.

Optionally, the spraying device comprises first nozzles which are arranged on two sides of the dust catching curtain and have nozzles facing the dust catching curtain, and the nozzles of the first nozzles are inclined relative to the dust catching curtain to increase the effective spraying area of the first nozzles.

Optionally, the spraying device is connected with the control unit to flush the dust catching curtain according to set time and frequency.

Optionally, the dust catching curtain comprises a dust catching curtain body, the upper end of the dust catching curtain body is fixed on a scroll, and the scroll is rotatably connected to the roadway hydraulic support and is fixedly connected with a driving device fixed on the roadway hydraulic support.

Optionally, the dust-catching curtain also comprises a box cover arranged around the reel, and an opening of the box cover faces downwards to avoid the dust-catching curtain body.

Optionally, a plurality of second nozzles arranged axially along the reel are included to wet the dust catching web in real time.

Optionally, the second nozzle is located within the spool.

An automatic air-controlled dust removal method for tracking dust sources of a coal mining machine is characterized in that automatically retractable dust catching curtains are arranged on roadway hydraulic supports arranged at intervals along a working face, the dust catching curtains on the front side and the rear side of the coal mining machine automatically extend out through a control unit, the rest dust catching curtains are in a retraction state, the states of the dust catching curtains can be switched along with the movement of the coal mining machine, the coal mining machine is always in a space defined by the two dust catching curtains in the extension state, and concentrated dust extraction and purification are performed on an area defined by the dust catching curtains on the two sides of the coal mining machine through an airborne dust remover arranged on the coal mining machine.

The invention has the beneficial effects that: the dust prevention and reduction efficiency is high, the coal mining machine is positioned in a relatively closed area by automatically unfolding the dust catching nets positioned at two sides of the area where the coal mining machine is positioned, so that on one hand, dust can be closed in the area, the escape of the dust is greatly reduced, and the dust in the area can be favorably and intensively pumped and purified by utilizing an airborne dust remover; on the other hand, the wind speed near the coal mining machine can be reduced, and the raised dust can be reduced to a certain extent; in addition, escaping dust can be collected again through the dust collecting curtain positioned on the downwind side, and the pollution of the dust caused by coal cutting of the roller of the coal mining machine on the fully mechanized coal mining face to the environment is obviously reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of an automatic air-controlled dust-removing system for tracking dust source of coal mining machine according to the present invention;

FIG. 2 is a schematic view of the structure of the dust-catching curtain;

fig. 3 is a schematic view of the installation position of the dust-catching curtain.

Reference numerals: the device comprises a downwind side dust catching curtain 1, a coal mining machine 2, an airborne dust collector 3, an upwind side dust catching curtain 4, a signal receiver 5, a control box 6, a motor 7, a nozzle base 8, a first nozzle 9, a scroll 10, a box cover 11, a dust catching net 12, a guide rail 13 and a roadway hydraulic support 14.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, an automatic air-control dust-removal system for tracking dust sources of a coal mining machine comprises a control unit and a plurality of dust-catching curtains which are arranged at intervals along a working surface and are installed on a roadway hydraulic support 14; the control unit comprises a signal transmitter arranged on the coal mining machine 2, a signal receiver 5 arranged on the dust catching curtain and a controller connected with the signal receiver 5; the signal receiver 5 is used for receiving the position information of the coal mining machine sent by the signal transmitter and sending the position information of the coal mining machine to the controller; the controller controls the states of the dust catching curtains according to the position information of the coal mining machine, so that the dust catching curtains positioned at the front side and the rear side of the coal mining machine 2 are in an extending state, and the dust catching curtains at other positions belong to a retracting state, so that the coal mining machine 2 is always positioned in a space surrounded by the two dust catching curtains in the extending state; the device also comprises an airborne dust collector 3 arranged on the coal mining machine 2 so as to intensively extract dust and purify an area surrounded by dust catching curtains positioned at two sides of the coal mining machine 2. The onboard dust remover 3 can be an onboard high-pressure spray injection dust remover or an electric dust remover.

Optionally, the dust collection curtain is also provided with a spraying device, the spraying device comprises first nozzles 9 which are arranged at two sides of the dust collection curtain and the nozzles of which face the dust collection curtain, and the spraying device is connected with the control unit so as to wash the dust collection curtain according to set time and frequency; the nozzle opening of the first nozzle 9 is inclined relative to the dust curtain to increase the effective spray area of the first nozzle 9. The dust catching curtain can automatically perform back washing to remove dust on the dust catching curtain in time, and has a good dust catching effect.

Optionally, the dust catching curtain comprises a dust catching curtain body, the upper end of the dust catching curtain body is fixed on a scroll 10, the scroll 10 is rotatably connected on the roadway hydraulic support 14 and is fixedly connected with a driving device fixed on the roadway hydraulic support 14, and the driving device can be a motor.

Optionally, the dust catching curtain body comprises a dust catching net 12 and bendable guide rails 13 arranged on both sides thereof.

Optionally, a box cover 11 is arranged around the reel 10, and the opening of the box cover 11 faces downwards to avoid the dust catching curtain body.

Optionally, a plurality of second nozzles are included, arranged axially along the reel 10 to wet the dust catching net 12 in real time, which second nozzles may be located within the reel 10, or on one or both sides of the reel 10.

An automatic air-control dust removal method for tracking dust sources of a coal mining machine is characterized in that automatically retractable dust catching curtains are arranged on roadway hydraulic supports 14 arranged at intervals along a working face, the dust catching curtains on the front side and the rear side of the coal mining machine 2 automatically extend out through a control unit, the rest dust catching curtains are in a retraction state, the states of the dust catching curtains can be switched along with the movement of the coal mining machine 2, the coal mining machine 2 is always in a space defined by the two dust catching curtains in the extension state, and concentrated dust extraction and purification are carried out on an area defined by the dust catching curtains on the two sides of the coal mining machine 2 through an airborne dust collector 3 arranged on the coal mining machine 2.

Examples

An automatic air-control dust removal system for tracking dust sources of a coal mining machine mainly comprises a control unit, a dust catching curtain and an airborne dust remover 3, wherein the control unit comprises a signal transmitter arranged on the coal mining machine 2, a signal receiver 5 arranged on the dust catching curtain and a controller connected with the signal receiver 5. When the coal mining machine 2 approaches, the receiver receives a signal from a signal transmitter located on the coal mining machine 2 and sends the signal to the controller, and the controller controls the dust catching curtain to extend out. At this time, the direction of the wind current is changed due to the obstruction of the dust catching curtain 4 at the windward side of the coal mining machine, so that the wind speed near the coal mining machine 2 is reduced, secondary dust raising caused by high wind speed is reduced to a certain extent, and the movement speed of dust near the coal mining machine 2 is reduced. Then the dust in the closed area is intensively extracted and purified by the airborne dust remover 3. The working principle of the airborne high-pressure spray injection dust remover is that negative pressure is formed through a built-in high-pressure nozzle, dust is sucked, and then the dust is purified and removed through combination of the dust and spray. Further, the dust escaping without being processed by the on-board dust collector 3 is secondarily collected by the dust collecting curtain 1 on the leeward side of the coal cutter. The dust catching curtain is automatically lifted according to the signal of the coal mining machine 2, so that the coal mining machine 2 is always in a relatively closed space, the diffusion of coal cutting dust of a roller of the coal mining machine is effectively prevented, the dust is caught twice through the airborne dust collector 3 and the dust catching curtain, and the dust concentration near the coal mining machine is greatly reduced.

The dust catching curtain mainly comprises a control box 6, a motor 7, a nozzle base 8, a first nozzle 9, a scroll 10, a box cover 11, a dust catching net 12 and a bendable guide rail 13, and the dust catching curtain is fixed on a roadway hydraulic support 14 by slings and is uniformly arranged at intervals. The roadway hydraulic support 14 is controlled to ascend and descend through an electro-hydraulic control system of the roadway hydraulic support, and the dust catching curtain ascends and descends along with the roadway hydraulic support 14, so that the functions of dust blocking and dust catching are achieved. The control box 6 is connected with a controller and is used for controlling the forward and reverse rotation of the scroll 10 in the motor 7 so as to control the extension and contraction of the dust catching curtain body 12. The second nozzles with small flow are arranged in the scroll 10 at intervals, so that the dust catching curtain can be kept in a wet state in real time, and the dust catching curtain on the leeward side of the coal mining machine can capture escaping dust. Meanwhile, a nozzle base 8 is further arranged on the control box 6, a large-flow first nozzle 9 is arranged on the nozzle base 8, continuous control is achieved with a roadway hydraulic support 14, water is sprayed at intervals for a certain time, the water spraying direction is obliquely sprayed to the dust catching curtain, so that the area is maximized, back washing of the dust catching curtain is achieved, and the phenomena that the dust catching capacity of the dust catching curtain is reduced and lifting is blocked due to the fact that the dust catching curtain is stained with too much dust are avoided.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.