CN111720157B

CN111720157B - Composite function type inflatable wind shielding device

Info

Publication number: CN111720157B
Application number: CN202010549173.4A
Authority: CN
Inventors: 李纯爱; 李承浩; 许成仁
Original assignee: Shandong Xinsheng Industrial Development LLC
Current assignee: Shandong Xinsheng Industrial Development LLC
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-07-30
Anticipated expiration: 2040-06-16
Also published as: CN111720157A

Abstract

The invention discloses a composite functional type inflatable wind-shielding device material, which comprises a gas chamber, wherein the gas chamber comprises wind-shielding cloth positioned at the front and the rear of the gas chamber, the wind-shielding cloth material comprises a base layer and a flame-retardant wear-resistant layer formed by hot-pressing and compounding the surface of the base layer, and the flame-retardant wear-resistant layer at least comprises the following components: 80-100 parts of linear low-density polyethylene, 40-45 parts of DOPO derivative, Al (OH)₃20-30 parts of maleic anhydride grafted high-density polyethylene copolymer, 12-15 parts of carbon powder and Al₂O₃15-20 parts of powder; the novel flame-retardant PVC plastic-coated steel wire is characterized in that the base body layer is made of polyethylene fiber cloth, a reinforced structure layer which is used for preventing cutting and stabbing and is beneficial to rolling is arranged between the base body layer and the flame-retardant wear-resistant layer, and the reinforced structure layer comprises a longitudinal foldable high-elasticity metal strip and a transverse PVC plastic-coated steel wire. The wind shielding effect is improved, the service life is prolonged, and meanwhile, the wind shielding wall can be used as a partition wall under special conditions for isolating a fire scene, so that the accident is prevented from being enlarged, and the safety is obviously improved.

Description

Composite function type inflatable wind shielding device

Technical Field

The invention relates to the technical field of novel functional materials for inflation and wind shielding, in particular to a composite functional type inflation and wind shielding device.

Background

With the development of socio-economy and the increase of income level, the requirement of people for work has gradually changed from the pure economic income consideration in the past to the stage of comprehensively considering the safety production and the comfort level of the working environment. The underground environment of the coal mine is severe and complex. At the same time, the humidity is high, the content of floating impurities such as coal dust and the like in the gas is high, and a large amount of corrosive gas such as CO exists₂、NO、NO₂、SO₂And so, the adoption of good mine ventilation facilities is a necessary condition for ensuring safe and comfortable production in the mining area. Taking developed countries such as Australia and the like as examples, the common mine tunnel of the coal mine which is mined at present has large cross section, good ventilation and excellent risk and disaster avoiding performance.

The mine ventilation facilities are mainly divided into air doors, air walls, air bridges, adjusting air windows and the like according to different functions, and the purposes of controlling the direction of underground air flow, enabling the underground air flow to flow according to a specified route, ensuring the effective air quantity of a mining working face and other air utilization places, and preventing harmful gas in a goaf and an old roadway from rushing into the mine air flow so as to ensure the safety of a mine.

In a traditional coal mine, a mine ventilation facility is generally constructed by building bricks and stones, the construction time is long, the workload is large, more construction wastes are easily generated during dismantling, and most of the dismantled structures cannot be reused. Once deformation occurs during use, the replacement and repair difficulty is high, the investment is high, and the reuse rate is low. Meanwhile, the function is single, and the requirement of modern production cannot be met.

Disclosure of Invention

In order to solve the technical problems, the invention provides a composite functional type inflatable wind shielding material and a device.

The complete technical scheme of the invention comprises the following steps:

the utility model provides a wind-guard material is aerifyd to complex function type, aerify wind-guard and include the air chamber, the air chamber is including being located its front and back wind-guard cloth, wind-guard cloth material includes the fire-retardant wearing layer that base member layer and base member layer surface formed through hot-pressing complex, and this fire-retardant wearing layer's component includes at least: 80-100 parts of linear low-density polyethylene, 40-45 parts of DOPO derivative, Al (OH)₃20-30 parts of maleic anhydride grafted high-density polyethylene copolymer, 12-15 parts of carbon powder and Al₂O₃15-20 parts of powder;

the wind-proof and anti-puncturing wind-proof and wind-proof fabric is characterized in that the base layer is polyethylene fiber cloth, a reinforced structure layer which is used for preventing cutting and puncturing and is beneficial to rolling is arranged between the base layer and the flame-proof wear-proof layer, the reinforced structure layer comprises a longitudinal and foldable high-elasticity metal strip and a transverse PVC plastic-coated steel wire, and the wind-proof cloth can be folded so as to be beneficial to storage and transportation;

the specific structure of the inflatable wind shield device is as follows: the air chamber comprises wind-blocking cloth positioned in front and at back of the air chamber and connecting cloth positioned on side surfaces, and the wind-blocking cloth and the connecting cloth are connected to form an air chamber structure; an air nozzle for inflating and deflating is arranged outside the wind-shield cloth; the chamber includes a plurality of closely spaced polyvinyl chloride filaments attached to the inner wall of the chamber for maintaining the chamber substantially in a desired configuration when inflated.

The height of the damper door is about half of the height of the air chamber.

Wherein the connecting cloth positioned above is of a fan-shaped structure and is suitable for the uneven surface of the roof of the mine.

The two sides of the air baffle door are respectively supported with a reinforced aeration plate.

The air blocking door is provided with a manhole.

The middle of the wind-blocking cloth is provided with a channel, and the wind-blocking door is arranged in front of the wind-blocking cloth.

The air blocking door is connected with the wall of the mine tunnel through a traction ring.

Compared with the prior art, the invention has the advantages that: the inflatable wind shielding device overcomes the defects of the traditional ventilation facility, is mainly used for underground airflow regulation and mine passage sealing of mines, realizes multifunctional combination, and improves the wear resistance and the flame retardance through the structural design of wind shielding cloth and the design selection of multilayer components. The whole device has the functions of wear resistance, flame retardance, cutting resistance, puncture resistance and the like. The wind shielding effect is improved, the service life is prolonged, and meanwhile, the wind shielding wall can be used as a partition wall for isolating a fire scene under special conditions, so that the accident expansion is prevented.

Drawings

Fig. 1 is a structural diagram of a composite functional type inflatable wind-shielding device disclosed by the invention.

Fig. 2 is another angular view of fig. 1.

FIG. 3 is a view showing the structure of the air cell.

FIG. 4a is a schematic diagram of the internal structure of the gas cell, and FIG. 4b is a diagram of the internal structure of the gas cell.

FIG. 5 is a schematic view of a reinforcing structure layer.

Fig. 6 is a longitudinal sectional view of the wind blocking cloth.

Fig. 7 is a schematic view showing the installation of the multifunctional type inflatable wind deflector.

Fig. 8 is a schematic view of a reinforcing structure.

Fig. 9 is a schematic view of a multifunctional inflatable windshield device with a manhole.

FIG. 10 is a schematic view of another embodiment of an inflatable windshield apparatus.

FIG. 11 is a schematic view of the damper door of FIG. 10.

In the figure: 1-mine shaft, 2-air baffle door, 3-air chamber, 4-air nozzle, 5-wind baffle cloth, 6-connecting cloth, 7-air chamber inner wall, 8-polyvinyl chloride fine fiber yarn, 9-high elasticity metal strip; 10-PVC plastic-coated steel wire; 11-reinforced inflatable plate, 12-manhole, 13-pulling ring, 14-push-pull suspension rod, 15-push door and 16-reinforced clapboard.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only illustrative and are not intended to limit the present application.

The invention discloses a composite functional type inflatable wind shielding material and a device, which are used for adapting to the characteristics of underground operation of a coal mine, preventing various possible problems in a complex environment, well completing air flow regulation and mine passage sealing work of the underground operation of the coal mine, and also can be used as a separation wall under special conditions, so as to separate a fire scene, prevent accident expansion and the like.

The structure of a composite function type inflatable wind deflector disclosed by the present invention will be schematically described below.

As shown in fig. 1-3, the present invention discloses a multifunctional inflatable wind-shielding device, which is disposed in a mine shaft 1 of a mine and comprises a wind-shielding door 2 and an air chamber 3, wherein the wind-shielding door 2 forms an external frame of the whole wind-shielding device and can be made of structural materials, and the height of the wind-shielding door is about half of the height of the air chamber 3. The air chamber comprises wind-break cloths 5 in front and behind it, and connecting cloths 6 on the sides. The wind-proof cloth 5 and the connecting cloth 6 are connected to form an air chamber structure. The outer part of the wind-shield cloth is provided with an air nozzle 4 for inflating and deflating. Wherein the connecting cloth 6 positioned above is of a fan-shaped structure and is suitable for the uneven surface of the roof of the mine.

The shape of the wind-shield cloth 5 positioned in front of and behind the air chamber 3 is adapted to the cross-sectional shape of the mine tunnel, and is a plate-type inflatable cloth. Can be designed to be completely shielded, and can also be designed to be a structure with a channel in the middle. The wind-proof cloth 5 comprises a base layer and a flame-retardant wear-resistant layer formed by hot-pressing and compounding the surface of the base layer, and a puncture-proof and cutting-proof reinforced structure layer can be hot-pressed and compounded in the middle. The base layer is made of 300-thick polyethylene fiber cloth, the inflation pressure is 70-120 kPa, the wind pressure resistance is 0.2 kN/per square meter, and in practical tests, the difference between the thermal insulation coefficient and the wind pressure resistance is small when the thickness of the base layer is increased to more than 300 mm for the fiber cloth with different thicknesses, so that the base layer is generally made of 300-thick polyethylene fiber cloth to save cost. The connecting cloth is also made of 300-thick polyethylene fiber cloth, the inflation pressure is 70-120 kilopascals, and the wind pressure resistance is 0.2 kilonewtons per square meter.

In the aspect of material selection of the surface flame-retardant wear-resistant layer, the wear-resistant component and the flame retardant are added on the basis of the polyethylene material because the surface flame-retardant wear-resistant layer mainly faces a mine, so that the polyethylene material can adapt to transportation and dragging in a complex underground environment, the wear resistance is improved, and the service life is prolonged. And can play a certain role in flame retardance when accidents happen, thereby improving the safety. The flame-retardant wear-resistant layer comprises the following components: 80-100 parts of linear low-density polyethylene, 40-45 parts of DOPO derivative, Al (OH)₃20-30 parts of maleic anhydride grafted high-density polyethylene copolymer, 12-15 parts of carbon powder and Al₂O₃15-20 parts of powder. The selection of the components of the material is based on the traditional polyethylene, the DOPO derivative and Al (OH) are added to cooperate with the organic flame retardant and inorganic flame retardant functions₃The halogen-free flame retardant with two components can isolate the fire scene when a fire disaster happens in the underground environment, and the components are designed to give full play to Al (OH)₃The decomposition reaction has the flame-retardant effect, the cost is reduced, no halogen or smoke exists, no toxic gas is generated, and the personal safety of underground workers is improved. At the same time adding wear-resisting component Al₂O₃The powder is dispersed on the surface layer, so that the wear resistance is improved and the service life is prolonged. The processing method of the wind-shield cloth comprises the steps of blending raw materials, extruding and granulating in a double-screw machine, and then carrying out water cooling and grain cutting to obtain composite material particles; preparing fiber yarns by a double-screw melt spinning machine, and then preparing the flame-retardant wear-resistant layer material. And then hot-pressing and compounding the reinforced structural layer and the matrix layer to obtain the composite material.

The main properties of the wind-blocking cloth are shown in Table 1

TABLE 1 wind-blocking cloth Properties

Meanwhile, in the using process, it is found that because the wind-blocking cloth and the connecting part of the air chamber are of non-rigid structures, the shape of the air chamber is often changed to a certain extent after the air chamber is inflated, so that the wind-blocking effect of the air chamber is reduced, and therefore, in order to improve the safety of the underground wind-blocking device, in a preferable mode of the invention, the air chamber structure internally comprises a plurality of densely arranged fine fiber filaments 8, as shown in fig. 4, the fine fiber filaments 8 are connected to the inner wall 7 of the air chamber, the fine filament is made of polyvinyl chloride, and is used for forming a certain fixing and limiting effect on the air chamber during inflation, so that the appearance of the air chamber is basically kept in a desired shape, and the wind-blocking effect is improved.

Also in view of the complexity of the downhole operation, in a further preferred embodiment of the invention, the wind-guard cloth on the side facing the wind is provided with a reinforcing structure layer on the inside for protection against cutting and stabbing and for facilitating rolling. As shown in fig. 5 to 6, the windshield fabric comprises a longitudinal, foldable, highly elastic metal strip 9 and a transverse PVC plastic-coated steel wire 10, and can be prevented from being scratched when being scratched by an external force. The wind-shield cloth can be rolled and folded to be beneficial to storage and transportation.

The wind deflector disclosed by the invention is further explained by adopting 2 embodiments according to different use purposes:

EXAMPLE 1 wind shield device for temporary Enclosure wall

(1) Preparing before installation, and as shown in fig. 7, on the section of a rectangular mine tunnel, notches with the depth of 300 mm and the width of 290 mm are formed on the vertical walls which are symmetrical on two sides; the notch of the connecting vertical surface on the floor of the mine road is downwards provided with a notch with the depth of 200 mm and the width of 290 mm. The error is plus or minus 10 mm. The sharp objects, stones and the like attached to the surface of the notch are removed, so that the surface of the notch is smooth, or the notch is smoothed by cement. The diagonal error of the slotted mine is not more than plus or minus 30 mm. The height of the upper plane of the mine tunnel connected with the notch is not less than the required height.

The wind screen device is laid and unfolded on the ground of the mine road in advance, the air is inflated by an air nozzle, air enters an air chamber through fine fiber yarns, when the inflation amount reaches about 60%, the wind screen door 2 is erected on the ground cloth, the wind screen door 2 is supported by the ground cloth and placed in the notch of the mine road, and the wind screen door is inflated to 70-120 kPa after being aligned up and down. And after the air is filled fully, observing the airtight effect of the wind shielding device, and checking the air leakage position if the air leakage exists. After the wind blocking door 2 is installed in place, the wind blocking cloth is fixed on the upper top of the main body wall in a sealing mode, and therefore the wind blocking effect is guaranteed. The wind shielding device is embedded into a notch of a mine tunnel and can resist relatively large wind pressure.

The slotting mode is adapted to the structure of the wind shielding device, and the upper part of the wind shielding device is of a fan-shaped structure, so that the side surface and the bottom surface of the mine tunnel are slotted during slotting, the inflated air chamber can be embedded into the slots of the side surface and the bottom surface, and the wind shielding effect is guaranteed. And to the top, then adopt fan-shaped structure's connection cloth for it has certain inflation surplus to the surface of mine way roof unevenness to go up connection cloth, has guaranteed the effect of keeping out the wind, thereby need not to open a slot at the top mine way, has greatly improved borehole operation's security. Meanwhile, in order to ensure the wind shielding effect, the relation between the ratio of the arc length to the radius of the sector part and the inflation pressure is calculated and actually verified, and the inflation pressure relation under the condition of no use is obtained as follows: and P is 70+620 (0.43-S), wherein P is inflation pressure and has the unit of kPa, S is the ratio of the arc length to the radius of the sector, the range of the ratio is 0.35-0.43, and 620 is a unit conversion coefficient. It can be seen that under the condition of larger air chamber pressure, a more gentle fan-shaped structure is preferably adopted, and conversely, the radian angle of the fan-shaped section is properly increased. To improve the wind shielding effect of the upper part.

To the great aeration windshield device that aerifys of area ratio, can also carry out reinforcement to both sides around the air damper, as shown in fig. 8, support respectively in the both sides of air damper and strengthen gas-filled board 11, this kind of gas-filled board is made by fibre cloth, is connected with air damper with the connector link, will strengthen the bottom and fix subaerial with lower margin bolt after aerifing, can effectually guarantee the stability that the large tracts of land is kept off the air damper.

In addition, in some embodiments, a manhole 12 may be provided on the damper door, as shown in fig. 9, through which a worker may work to the opposite side, and after passing through the manhole, the manhole may be closed by inflation using an inflatable plug made of fiber cloth.

Example 2 wind shield device for wind gate replacement

As shown in fig. 10 to 11, in the present embodiment, the wind blocking cloth 3 of the air chamber is designed in a structure with a passage in the middle. The damper door 2 is provided in front thereof. The upper edge and the left and right side edges of the front and back surfaces of the air baffle door 2 are provided with a plurality of pulling rings 13. When the wind shield cloth is installed, the wind shield cloth is fixed on the wall of the well after the wind shield door is erected. After the fixed connection of two sides wind-break cloth and mine road wall around accomplishing, pull ring 13 is connected with stretching strap one end, and the other end of stretching strap is connected with the stock take-up on the mine road wall for the firm erectting of air damper is among the mine road, the effectual effect of resisting the wind pressure. The air blocking door 2 is provided with a sliding door 15 through a sliding suspension rod 14, so that the partition wall can move conveniently, and reinforcing partition plates 16 are arranged on two sides of the sliding door.

Due to the action of the ground pressure, the cross section of some ore tunnels is gradually reduced along with the deepening of the ore tunnels, and the height and the width of the ore tunnels are reduced. When conditions allow, the wind shielding device with the structure can be installed in a notch of a mine road, and the effect is better by the method which is the same as that of the embodiment 1.

The above applications are only some embodiments of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.

Claims

1. The utility model provides a compound functional type inflatable wind-shielding device, a serial communication port, inflatable wind-shielding device includes the air chamber, and the air chamber is including being located its front and back wind-shielding cloth, wind-shielding cloth material includes the fire-retardant wearing layer that base member layer and base member layer surface formed through hot pressing complex, the base member layer is polyethylene fiber cloth, this fire-retardant wearing layer's groupAt least comprises the following steps: 80-100 parts of linear low-density polyethylene, 40-45 parts of DOPO derivative, Al (OH)₃20-30 parts of maleic anhydride grafted high-density polyethylene copolymer, 12-15 parts of carbon powder and Al₂O₃15-20 parts of powder;

the inner side of the wind-proof cloth facing the wind is provided with a reinforced structure layer which is used for preventing cutting and stabbing and is beneficial to rolling, the reinforced structure layer comprises a longitudinal and foldable high-elasticity metal strip and a transverse PVC plastic-coated steel wire, and the wind-proof cloth can be folded so as to be beneficial to storage and transportation;

2. The complex function type pneumatic windshield apparatus of claim 1, wherein the height of the damper door is half of the height of the air chamber.

3. The multi-functional inflatable wind deflector according to claim 2, wherein the upper connecting cloth has a fan-shaped structure suitable for uneven surface of the roof of the mine.

4. A combined function type inflatable wind deflector according to claim 3, wherein reinforcing inflatable plates are supported on both sides of the wind deflector, respectively.

5. The multifunctional inflatable wind deflector of claim 4, wherein the wind deflector is provided with a manhole.

6. The multi-function inflatable wind deflector of claim 5, wherein the wind deflector has a passage in the middle and the wind deflector is disposed in front of the passage.

7. The multifunctional inflatable wind deflector of claim 6, wherein the wind deflector is connected to the wall of the mine tunnel by a pulling ring.