CN212837913U

CN212837913U - Safety ventilation system for new coal mine well

Info

Publication number: CN212837913U
Application number: CN202020898771.8U
Authority: CN
Inventors: 程瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-03-30
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a coal mine new well safety ventilation system, which is arranged in a coal mine underground return airway, wherein the return airway comprises a first return airway and a second return airway which are communicated with each other, one end of the first return airway and one end of the second return airway which are communicated with each other are connected to a return airway shaft, an air draft mechanism is arranged in the first return airway, and the tail end of the first return airway forms an air outlet; an air supply mechanism is arranged in the second air return gallery, and the tail end of the air supply mechanism forms an air inlet; at least one of the first return airway or the second return airway is provided with a test air door. The utility model discloses a new well safety ventilation system in colliery distinguishes traditional pure forced draft or pull-out type ventilation, through the air exhauster convulsions when adopting the forced draft blower air supply, has both advantages concurrently, wherein forced draft is to the working face new trend altogether, and the pull-out type is from the dirty wind of working face discharge.

Description

Safety ventilation system for new coal mine well

Technical Field

The utility model relates to a ventilation system, especially a new well safety ventilation system in colliery suitable for ventilate in pit.

Background

The design of the mine ventilation system has very important influence on the production safety of the coal mine. The mine ventilation refers to an operation process of continuously conveying fresh air underground of a mine to provide air for workers, facilitating breathing, diluting and discharging harmful and toxic gas and dust, and improving the underground climate condition of the mine. Mine ventilation is an important component of mine mining work and is the basis for maintaining the normal working environment of a mine and ensuring safety. The reasonable ventilation of the mine is a basic means for preventing gas, dust and fire accidents, controlling heat damage, improving climatic environment conditions and creating labor production suitable for the safety of people. The working modes of the ventilator used in the mine at present are mainly a press-in type and a draw-out type. However, the extraction type ventilation is only suitable for coal mines with large mining working faces and long trends, and when the underground airflow is in a negative pressure state, if the operation of the main ventilation product is stopped due to reasons, the roadway airflow can be raised, so that the safety production is not facilitated. The main disadvantages of the press-in type ventilation include more wind paths, dispersed wind flow, large wind leakage of the wind inlet circuit and difficult management. And simultaneously, the wind resistance is large, and the air quantity is difficult to adjust. More importantly, the ventilator enables the underground airflow to be in a positive pressure state, and if the ventilator stops operating, the airflow pressure is suddenly reduced, so that the gas emission amount of the goaf is increased.

Accordingly, there is a need for improvement in the above-mentioned problems of the prior art.

Disclosure of Invention

In view of the above-mentioned problem that prior art exists, an aspect of the utility model aims at providing a be applicable to colliery new well safety ventilation system in pit.

In order to achieve the above object, the utility model provides a safe ventilation system of new shaft in coal mine, it disposes in the colliery return airway, the return airway includes first return airway and second return airway that are linked together, wherein, first return airway and second return airway communicate one end and are connected to the return airway shaft, are provided with updraft mechanism in the first return airway and its end constitutes the air outlet; an air supply mechanism is arranged in the second air return gallery, and the tail end of the air supply mechanism forms an air inlet; at least one of the first return airway or the second return airway is provided with a test air door.

Preferably, the air draft mechanism comprises a motor-driven air draft fan, and the air supply mechanism comprises a motor-driven air supply blower.

Preferably, the motor for driving the suction fan and an output shaft of the motor for driving the suction fan are provided with brakes.

Preferably, the brake is an electro-hydraulic block brake.

Preferably, the exhaust fan and the blower are axial flow fans for mining.

Preferably, the air outlet is provided with a silencer, and the silencer comprises a bottom plate, a top plate and a plurality of sound-absorbing plates arranged between the bottom plate and the top plate.

Compared with the prior art, the utility model provides a new well safety ventilation system in colliery distinguishes traditional pure forced ventilation or pull-out type ventilation, through the air exhauster convulsions when adopting the forced draught blower air supply, has both advantages concurrently, and wherein forced ventilation is to the working face new trend altogether, and the pull-out type is from the working face exhaust foul wind.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

Fig. 1 is the utility model discloses a new well safety ventilation system's in colliery schematic diagram.

Fig. 2 is a schematic sectional view taken along the direction a-a in fig. 1.

The main reference numbers:

1-return airway; 2-a vertical shaft of a return airway; 3, a fan; 4-a brake; 5, a motor; 6-a filter assembly; 7-testing the air door; 8-a silencer; 9-a first crane; 10-a second crane; 11-a first return airway; 12-a second return airway; 13-air outlet; 21-sealing the cover; 31-an exhaust fan; 32-a blower; 81-a bottom plate; 82-a top plate; 83-Sound absorbing Panel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

As shown in fig. 1, an embodiment of the present invention provides a coal mine new well safety ventilation system, which is disposed in a coal mine underground return airway 1, where the return airway 1 includes a first return airway 11 and a second return airway 12 that are connected to each other, where the first return airway 11 and the second return airway 12 are connected to a return airway shaft 2 at one end, and fans 3 are disposed in the first return airway 11 and the second return airway 12, where the fans 3 are specifically an air pumping mechanism and an air supply mechanism, and an air pumping mechanism (not labeled in the figure) is disposed in the first return airway 11, and an air outlet 13 is formed at an end of the first return airway 11; an air supply mechanism (not labeled in the figure) is arranged in the second air return way 12, and the tail end of the air supply mechanism forms an air inlet (not labeled in the figure); at least one of the first return airway 11 or the second return airway 12 is provided with a test damper 7. The testing air door 7 is used for detecting the airflow in the return airway 1 through a sensor so as to judge whether the fan 3 works normally. To the realization mode of this part sensor, can rely on conventional technical means, the utility model discloses do not do specifically and introduce.

Specifically, the above-mentioned fan 3 specifically includes the air draft mechanism and the air supply mechanism are driven by the motor 5, wherein the air draft mechanism may include an air draft fan 31 driven by the motor 5, and the air supply mechanism includes an air blower 32 driven by the motor 5. The suction fan 31 and the blower 32 are preferably axial fans for mining in the present invention. In addition, for the convenience of manipulation, the output shafts of the motor 5 driving the suction fan 31 and the motor 5 driving the suction fan 32 are provided with brakes 4. Preferably, the brake 4 is an electric hydraulic block brake.

In the present invention, the silencer 8 disposed at the air outlet 13 aims to reduce the noise of the exhaust air flow discharged by the exhaust fan 31 during operation, and generally speaking, the silencer may include a bottom plate 81, a top plate 82 and a plurality of sound-absorbing plates 83 disposed between the bottom plate 81 and the top plate 82. The sound-absorbing panel 83 may be specifically a plate material made of a sound-absorbing material, such as a polyester fiber sound-absorbing panel.

As also shown in fig. 1, the second return airway 12 is used to blow fresh air into the working surface, and it is also necessary to prevent dust or air from backflushing, and therefore, preferably, as shown in fig. 1, a filter assembly 6 is provided in the second return airway 12. The filter component 6 can be realized by a filter screen made of a non-woven fabric material with a high general passing rate, and the filter component can be used for filtering coal dust.

Furthermore, in the present invention, in order to facilitate the deployment of the motor and the fan, a working room for the motor and the fan may be provided with a first crane 9 and a second crane 10.

On the other hand, at least one section of the shaft 2 is located above the ground, and its well head can be sealed by a gas-permeable cover 21.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. The safety ventilation system for the new coal mine well is deployed in an underground return airway of the coal mine, and the return airway comprises a first return airway and a second return airway which are communicated with each other; an air supply mechanism is arranged in the second air return gallery, and the tail end of the air supply mechanism forms an air inlet; at least one of the first return airway or the second return airway is provided with a test air door.

2. The ventilation system for coal mine new shaft safety as claimed in claim 1, wherein the air draft mechanism comprises a motor-driven air draft fan, and the air supply mechanism comprises a motor-driven air supply fan.

3. The new coal mine well safety ventilation system of claim 2, wherein the motor driving the suction fan and an output shaft of the motor driving the suction fan are provided with brakes.

4. The new coal mine well safety ventilation system of claim 3, wherein the brake is an electro-hydraulic block brake.

5. The system of claim 2, wherein the suction fan and the blower are axial fans for mines.

6. The ventilation system for coal mine new shaft safety as claimed in claim 1, wherein the air outlet is provided with a silencer, the silencer comprises a bottom plate, a top plate and a plurality of sound-absorbing plates arranged between the bottom plate and the top plate.