CN214616672U

CN214616672U - Sealing wall for fully mechanized coal mining face of coal mine

Info

Publication number: CN214616672U
Application number: CN202120421406.2U
Authority: CN
Inventors: 连刘平; 夏天糠; 闫寅山; 周茂; 刘振富
Original assignee: Shenhua Shendong Coal Group Co Ltd
Current assignee: Shenhua Shendong Coal Group Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-11-05
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a sealing wall for colliery is combined and is adopted working face, it includes: the air bag comprises an air bag and an elastic sealing edge arranged around the outer part of the air bag, wherein the elastic sealing edge can change along with the size change of the air bag; the gasbag sets up air inlet and gas vent, can dismantle on the elasticity seal and be connected with the control pipeline subassembly, the control pipeline subassembly includes: the air inlet pipeline is communicated with the air inlet of the air bag, the exhaust pipeline is communicated with the air outlet of the air bag, and the control valve group is arranged on the air inlet pipeline and/or the exhaust pipeline and is controlled to open or close the air inlet pipeline and the exhaust pipeline so as to realize inflation and deflation of the air bag. The utility model provides a current sealed wall efficiency of construction low, the big problem of workman intensity of labour.

Description

Sealing wall for fully mechanized coal mining face of coal mine

Technical Field

The utility model relates to a combine the safety device field of adopting the working face in the pit, in particular to colliery is combined and is adopted working face seal wall.

Background

During the primary mining period of the fully mechanized coal mining face of the coal mine, before the old roof of the goaf collapses, serious air leakage phenomenon exists on the face, and air current enters the goaf through the gap between the support and the coal wall and the gap between the support and the support, so that the air current entering the face cannot effectively blow out dust generated during normal production, and the face has large dust, poor visual field and great potential safety hazard. And with the continuous forward propulsion of the working face, the range of the goaf is continuously enlarged, the oxygen concentration of the upper corner of the machine tail of the fully mechanized mining working face is low, the problem that gas is easy to gather directly influences the safety production in the well and the safety of coal miners, and great potential safety hazards exist. In order to ensure sufficient air volume to dilute gas, a sealing wall needs to be constructed to seal the upper corner and the lower corner after each stoping cycle of the fully mechanized coal mining face is finished.

The traditional mode of closing upper and lower corner mainly has two kinds, and the first kind is to build the sealed wall, and this kind of mode exists the adverse factor such as the efficiency of construction is low, material waste, and is influenced by the ground pressure and easily damages the fracture, threatens personnel and equipment safety near etc.. In addition, the hard masonry and concrete materials are essentially not recyclable after removal, and can also create a burden on downhole space and transportation. The second is to adopt the mode of stacking the sand bag to seal upper and lower corners, but this kind of sand bag stacking mode, the plasticity is poor, can not closely laminate between each obturator to increased the labour in the work progress, extravagant a large amount of braided bags, not conform to the fully mechanized face production mode of rapid propulsion. Therefore, it is necessary to design a safe airtight wall which is rapid and convenient to construct, convenient to remove and recyclable.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to combine to adopt the problem that the closed mode efficiency of upper and lower corner construction is low, workman intensity of labour is big that the working face was adopted in order to prevent that corner gas transfinites about the working face, improve oxygen concentration.

To the technical problem mentioned above, the utility model provides a following technical scheme:

a sealant wall for a coal mine fully mechanized coal mining face, comprising: the air bag comprises an air bag and an elastic sealing edge arranged around the outer part of the air bag, wherein the elastic sealing edge can change along with the size change of the air bag; the gasbag sets up air inlet and gas vent, can dismantle on the elasticity seal and be connected with the control pipeline subassembly, the control pipeline subassembly includes: the air inlet pipeline is communicated with the air inlet of the air bag, the exhaust pipeline is communicated with the air outlet of the air bag, and the control valve group is arranged on the air inlet pipeline and/or the exhaust pipeline and is controlled to open or close the air inlet pipeline and the exhaust pipeline so as to realize inflation and deflation of the air bag.

The utility model discloses an among the partial implementation mode, the gasbag melt joint in on the elasticity banding, be equipped with on the elasticity banding and be used for the intercommunication the air inlet reaches to be used for the intercommunication with the inlet opening of air inlet line the gas vent with exhaust pipe's exhaust through-hole.

The utility model discloses an among the partial implementation, the elasticity banding includes a plurality of sub-banding that connect gradually, connects through compression spring between the adjacent sub-banding.

The utility model discloses an among the some embodiments, set up a plurality of connecting portions on the elasticity sealing, connecting portion are used for being connected with hydraulic support.

The utility model discloses an among the some embodiments, connecting portion including set up in screw hole on the sub-banding, the elasticity banding through connect in connecting bolt on the screw hole with hydraulic support connects.

In some embodiments of the present invention, the airbag comprises an outer airbag and an inner airbag located inside the outer airbag, the inner airbag is provided with a first air inlet and a first air outlet, and the outer airbag is provided with a second air inlet and a second air outlet; the control pipeline assembly comprises a first air inlet pipeline communicated with the first air inlet, a first exhaust pipeline communicated with the first exhaust port, a second air inlet pipeline communicated with the second air inlet, and a second exhaust pipeline communicated with the second exhaust port.

In some embodiments of the present invention, the control valve set includes a first pressure sensor and a first safety valve disposed on the first air intake pipeline, and a second pressure sensor and a second safety valve disposed on the second air intake pipeline, and when a pressure value detected by the first pressure sensor exceeds a first set value, the first safety valve is controlled to open; and when the pressure value detected by the second pressure sensor exceeds a second set value, the second safety valve is controlled to be opened.

The utility model discloses an among the partial embodiment, the valve unit including set up in first air inlet pipeline first exhaust pipeline the second air inlet pipeline and solenoid valve on the second exhaust pipeline, the solenoid valve is controlled to be opened or to be closed first air inlet pipeline first exhaust pipeline the second air inlet pipeline and second exhaust pipeline.

The utility model discloses an in some embodiments, the valve unit including set up respectively in first air inlet pipeline first exhaust pipeline the second air inlet pipeline and stop valve on the second exhaust pipeline, the stop valve is used for opening or closing first air inlet pipeline first exhaust pipeline the second air inlet pipeline and the second exhaust pipeline.

In some embodiments of the present invention, the inner bladder is made of flexible rubber, and the outer bladder is made of plastic coated cloth.

The technical scheme of the utility model prior art relatively has following technological effect:

the utility model provides a sealing wall for colliery is combined and is adopted working face includes the gasbag that can fill the gassing and is used for protecting the elasticity banding of gasbag, during the use direct control gasbag fill gassing can, low in labor strength, the installation, dismantle convenient and fast, greatly improved work efficiency, and, the sealing wall can realize cyclic utilization through filling gassing, reduced manufacturing cost; in addition, the sealing wall avoids the damage of the air bag by arranging the elastic sealing edge which changes along with the size of the air bag, the sealing reliability of the sealing wall is good, and the elastic sealing edge can also restrict the inflated shape of the air bag within a certain range so as to enable the shape to be matched with the structures of the upper corner and the lower corner.

Drawings

The objects and advantages of the present invention will be understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a specific embodiment of the sealing wall for the coal mine fully mechanized coal mining face of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 1 shows a concrete embodiment of a sealing wall (hereinafter referred to as sealing wall) for a fully mechanized coal mining face of a coal mine, the sealing wall includes: the inflatable air bag comprises an air bag 10 and an elastic sealing edge 20 arranged around the outside of the air bag 10, wherein the elastic sealing edge 20 can change along with the size change of the air bag 10, specifically, when the air bag 10 is inflated, the elastic sealing edge 20 is expanded, and when the air bag 10 is deflated, the elastic sealing edge 20 is reduced; the gasbag 10 sets up air inlet and gas vent, can dismantle on the elasticity banding 20 and be connected with control pipeline subassembly 30, control pipeline subassembly 30 include with the air inlet pipeline of the air inlet intercommunication of gasbag 10 and with the exhaust pipe of the gas vent intercommunication of gasbag 10, and set up in the air inlet pipeline and/or the last valve unit of control valve group of exhaust pipe, the controlled opening of valve unit is said air inlet pipeline and exhaust pipe, in order to realize the gassing of gasbag 10.

The sealing wall adopts the structure of the air bag 10 which can be inflated and deflated, the inflation and deflation can be directly controlled during use, the labor intensity is low, the installation and the disassembly are convenient and rapid, the working efficiency is greatly improved, in addition, the sealing wall can realize the cyclic utilization through the inflation and deflation, and the production cost is reduced; in addition, the sealing wall is provided with the elastic sealing edge 20 for protecting the air bag 10 at the outer side of the air bag 10, so that the air bag 10 is prevented from being damaged, the sealing reliability of the sealing wall is good, and meanwhile, the elastic sealing edge 20 can limit the shape of the air bag 10 to be matched with the structures of the upper corner and the lower corner.

In particular, the configuration of the elastic sealing edge 20 is not exclusive, and in one embodiment, it may be a one-piece structure made of a wear-resistant elastic material that expands as the airbag 10 inflates. Because the volume of the inflated airbag 10 is large and the elastic deformation of the elastic sealing edge 20 made of elastic material is limited in order to satisfy the sealing effect, in another embodiment, the elastic sealing edge 20 includes a plurality of sub sealing edges 21 connected in sequence, and adjacent sub sealing edges 21 are connected by a compression spring 22. The sub-sealing edge 21 can be made of a rigid material, such as a metal material, so that the requirement of the airbag 10 for large volume change can be met by arranging a plurality of compression springs 22, and meanwhile, the inflation and deflation of the sealing wall body are ensured, and the size increase or decrease of the elastic sealing edge 20 has certain controllability.

In order to ensure that the sealing wall and the working surface are pushed synchronously, the elastic sealing edge 20 is provided with a plurality of connecting parts, and the connecting parts are used for being connected with the hydraulic support. This allows the enclosure to be connected to a hydraulic support. More specifically, the connecting portion includes a threaded hole 23 disposed on the sub-sealing edge 21, and the elastic sealing edge 20 is connected to the hydraulic bracket by a connecting bolt connected to the threaded hole 23.

Specifically, the elastic sealing edge 20 is connected with the airbag 10 by a plastic welding technology, and an air inlet through hole for communicating the air inlet with the air inlet pipeline and an air outlet through hole for communicating the air outlet with the air outlet pipeline are formed in the elastic sealing edge 20.

The air bag 10 comprises an outer air bag 11 and an inner air bag 12 positioned in the outer air bag 11, wherein the inner air bag 12 is made of an airtight rubber material inner film which is flame-retardant, antistatic and high in elasticity, and has a certain extrusion resistance and impact resistance and a certain pressure-bearing performance; the outer air bag 11 is made of flame-retardant, wear-resistant, tear-resistant, antistatic and impact-resistant flexible plastic coated cloth, and plays a role in protecting the inner air bag 12 from being damaged. The inner airbag 12 is not communicated with the outer airbag 11, the inner airbag 12 is provided with a first air inlet 121 and a first air outlet 122, and the outer airbag 11 is provided with a second air inlet 111 and a second air outlet 112; the control line assembly 30 includes a first intake line 301 in communication with the first intake port 121, a first exhaust line 302 in communication with the first exhaust port 122, a second intake line 303 in communication with the second intake port 111, and a second exhaust line 304 in communication with the second exhaust port 112.

In particular, the control valve group comprises a first pressure sensor 305 and a first safety valve 306, which are arranged on the first intake line 301, and a second pressure sensor 307 and a second safety valve 308, which are arranged on the second intake line 303. When the pressure value detected by the first pressure sensor 305 exceeds a first set value, the first safety valve 306 is controlled to open, so that the inner air bag 12 is rapidly deflated; when the pressure value detected by the second pressure sensor 307 exceeds a second set value, the second safety valve 308 is controlled to open, so that the outer airbag 11 is deflated quickly. So as to ensure that the gas pressure in the air bag 10 is less than the bearing strength of the air bag 10. The first and second set points may be the same or different.

The control valve group comprises solenoid valves 309 arranged on the first air inlet pipeline 301, the first exhaust pipeline 302, the second air inlet pipeline 303 and the second exhaust pipeline 304, and the solenoid valves 309 are controlled to open or close the first air inlet pipeline 301, the first exhaust pipeline 302, the second air inlet pipeline 303 and the second exhaust pipeline 304. For example, when inflating the inner airbag 12, the solenoid valve 309 is controlled to open the first air intake line 301, close the first exhaust line 302, the second air intake line 303 and the second exhaust line 304; when the inner airbag 12 is deflated, the solenoid valve 309 is controlled to close the first air intake line 301, the second air intake line 303 and the second exhaust line 304 and open the first exhaust line 302.

The control valve group comprises stop valves 310 respectively arranged on the first air inlet pipeline 301, the first exhaust pipeline 302, the second air inlet pipeline 303 and the second exhaust pipeline 304, wherein the stop valves 310 are used for opening or closing the first air inlet pipeline 301, the first exhaust pipeline 302, the second air inlet pipeline 303 and the second exhaust pipeline 304. During normal operation, each of the stop valves 310 disposed on the first intake pipeline 301, the first exhaust pipeline 302, the second intake pipeline 303, and the second exhaust pipeline 304 is in an open state, and the opening or closing of each pipeline is controlled by the solenoid valve 309, when the solenoid valve 309 is in maintenance; the intake/exhaust line can be opened or closed by controlling the shutoff valve 310.

The use process of the sealing wall is as follows:

before use, preset values are respectively set for the gas pressures of the outer airbag 11 and the inner airbag 12, the preset value of the outer airbag 11 is the limit value of the gas pressure of the outer bladder for keeping flexibility, and the preset value of the inner airbag 12 is the limit value of the tension of the compression spring 22. When the sealing wall is used, the sealing wall is arranged at the upper corner and the lower corner, and the sealing wall is connected to the hydraulic support through the fixing bolt holes in order to ensure that the sealing wall and a working face are pushed synchronously.

Firstly, the electromagnetic valve 309 is controlled to open the second air inlet pipeline 303, close the second exhaust pipeline 304, the first air inlet pipeline 301 and the first exhaust pipeline 302, the air is filled into the outer airbag 11 through the second air inlet 111, the outer airbag 11 is gradually expanded, when the second pressure sensor 307 detects that the pressure in the outer airbag 11 exceeds a preset value, the second safety valve 308 is opened for automatic deflation, along with the aging and the abrasion of the material of the outer airbag 11, when the outer airbag 11 is inflated to reach a rigid state, the second safety valve 308 can also be actively opened for deflation, so as to ensure that the outer airbag 11 is always in a flexible state. Then, the first air inlet pipeline 301 is controlled to be opened electromagnetically, the first air outlet pipeline 302, the second air inlet pipeline 303 and the second air outlet pipeline 304 are closed, the inner air bag 12 is inflated, the outer air bag 11 is attached to the elastic sealing edge 20 due to the gradual expansion of the inner air bag 12, the inner air bag 12 is inflated continuously at the moment, the spring is in a gradually stretched state after the compression spring 22 in the elastic sealing edge 20 is stressed, when the first pressure sensor 305 detects that the pressure in the inner air bag 12 exceeds a preset value, the first safety valve 306 automatically deflates, and due to the existence of the inner air bag 12 and the compression spring 22, the top, the bottom and the left and right sides of the sealing wall can automatically adjust the shape of the sealing wall according to the shapes of the upper corner and the lower corner, so that the state of being matched with the upper corner and the lower corner is achieved, the shape is kept consistent, and the sealing of the upper corner and the lower corner is achieved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A sealing wall for a coal mine fully mechanized coal mining face, comprising:

the sealing device comprises an air bag and an elastic sealing edge arranged around the outer part of the air bag, wherein the elastic sealing edge changes along with the size change of the air bag;

the gasbag sets up air inlet and gas vent, can dismantle on the elasticity seal and be connected with the control pipeline subassembly, the control pipeline subassembly includes: the air inlet pipeline is communicated with the air inlet of the air bag, the exhaust pipeline is communicated with the air outlet of the air bag, and the control valve group is arranged on the air inlet pipeline and/or the exhaust pipeline and is controlled to open or close the air inlet pipeline and the exhaust pipeline so as to realize inflation and deflation of the air bag.

2. The sealant wall for the fully mechanized mining face of a coal mine according to claim 1, wherein the air bag is welded to the elastic sealing edge, and an air inlet through hole for communicating the air inlet with an air inlet pipeline and an air outlet through hole for communicating the air outlet with an air outlet pipeline are formed in the elastic sealing edge.

3. The sealant wall for the fully mechanized mining face of a coal mine according to claim 1, wherein the elastic sealing edge comprises a plurality of sequentially connected sub sealing edges, and adjacent sub sealing edges are connected through a compression spring.

4. The sealing wall for the fully mechanized coal mining face of the coal mine according to claim 3, wherein a plurality of connecting portions are arranged on the elastic sealing edge, and the connecting portions are used for being connected with the hydraulic support.

5. The sealant wall for the fully mechanized mining face of the coal mine according to claim 4, wherein the connecting portion comprises a threaded hole disposed on the sub-sealing edge, and the elastic sealing edge is connected to the hydraulic bracket by a connecting bolt connected to the threaded hole.

6. The sealant wall for a coal mine fully mechanized mining face of claim 1, wherein the air bag comprises an outer air bag and an inner air bag located inside the outer air bag, the inner air bag is provided with a first air inlet and a first air outlet, and the outer air bag is provided with a second air inlet and a second air outlet; the control pipeline assembly comprises a first air inlet pipeline communicated with the first air inlet, a first exhaust pipeline communicated with the first exhaust port, a second air inlet pipeline communicated with the second air inlet, and a second exhaust pipeline communicated with the second exhaust port.

7. The sealing wall for the coal mine fully mechanized mining face of claim 6, wherein the control valve set comprises a first pressure sensor and a first safety valve arranged on the first air inlet pipeline, and a second pressure sensor and a second safety valve arranged on the second air inlet pipeline, and when a pressure value detected by the first pressure sensor exceeds a first set value, the first safety valve is controlled to be opened; and when the pressure value detected by the second pressure sensor exceeds a second set value, the second safety valve is controlled to be opened.

8. The seal wall for the coal mine fully mechanized mining face of claim 7, wherein the set of control valves comprises solenoid valves disposed on the first air inlet line, the first exhaust line, the second air inlet line, and the second exhaust line, the solenoid valves being controlled to open or close the first air inlet line, the first exhaust line, the second air inlet line, and the second exhaust line.

9. The seal wall for the coal mine fully mechanized mining face of claim 8, wherein the control valve set comprises stop valves respectively disposed on the first air inlet pipeline, the first exhaust pipeline, the second air inlet pipeline, and the second exhaust pipeline, and the stop valves are configured to open or close the first air inlet pipeline, the first exhaust pipeline, the second air inlet pipeline, and the second exhaust pipeline.

10. The sealant wall for a fully mechanized coal mining face of claim 6, wherein the inner bladder is made of flexible rubber and the outer bladder is made of plastic coated cloth.