CN216767450U - Pre-decompression air door - Google Patents

Abstract

The utility model provides a pre-decompression air door which comprises a driving device and a door leaf rotatably connected with a door wall, wherein a decompression opening is formed in the door leaf, and a decompression window which is rotatably connected with the door leaf and can seal the decompression opening is formed in the decompression opening; the driving device is provided with a rotating shaft and a power mechanism for driving the rotating shaft to rotate, a first traction rope and a second traction rope which can be wound on the rotating shaft are connected to the rotating shaft, one end, far away from the rotating shaft, of the first traction rope is fixedly connected with the door leaf, and one end, far away from the rotating shaft, of the second traction rope is fixedly connected with the pressure relief window. Before the air door is formally opened, the driving device drives the second traction rope to wind so as to open the pressure relief window, and then the door leaf is opened. After the pressure relief window is opened, negative pressure can be greatly reduced, the door leaf is opened again, power requirements can be greatly reduced, the door leaf can be opened more safely and reliably, and when the eardrum of a human body is protected, personnel can be ensured to pass through safely.

Description

Pre-decompression air door

Technical Field

The utility model belongs to the field of mine air doors, and particularly relates to a pre-decompression air door.

Background

The air door has a great lifting position in a mine ventilation system, and because the pressure difference of the air door connecting an air inlet roadway and an air return roadway under a coal mine is very large, the pressure difference of the air door close to an air shaft can reach more than kilopascal. In the face of the air door with high pressure difference, the direct manual opening is very difficult and dangerous, so that the existing mining large negative pressure air door generally adopts compressed air as a power source to directly open the air door in a pulling manner. When the air door is opened and closed, the air door is influenced by negative pressure, so that huge energy is provided, and huge examination is provided for the material properties of a pneumatic device and a pulling rope; moreover, pedestrians pass through the air door quickly, so that the danger caused by sudden closing of the air door is worried about, and great inconvenience is brought to underground operators when the underground operators pass through the air door; the sharp changes in pressure can also cause significant damage to human organs, particularly the eardrum.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems in the prior art, and aims to provide a pre-decompression air door.

In order to achieve the purpose, the utility model adopts the following technical scheme: a pre-decompression air door comprises a driving device and a door leaf rotatably connected with a door wall, wherein a decompression opening is formed in the door leaf, and a decompression window which is rotatably connected with the door leaf and can seal the decompression opening is formed in the decompression opening; the driving device is provided with a rotating shaft and a power mechanism for driving the rotating shaft to rotate, the rotating shaft is connected with a first traction rope and a second traction rope which can be wound on the rotating shaft, one end of the first traction rope, far away from the rotating shaft, is fixedly connected with the door leaf, and one end of the second traction rope, far away from the rotating shaft, is fixedly connected with the pressure relief window; at the in-process of opening the air door, drive arrangement draws the release window through the second haulage rope earlier and opens, treats the pressure release back, and drive arrangement rethread first haulage rope draws the door leaf and opens.

According to the technical scheme, before the air door is formally opened, the driving device drives the second traction rope to wind so as to open the pressure relief window, and then the door leaf is opened. After the pressure relief window is opened, negative pressure can be greatly reduced, the door leaf is opened again, power requirements can be greatly reduced, the door leaf can be opened more safely and reliably, and when the eardrum of a human body is protected, personnel can be ensured to pass through safely.

In a preferred embodiment of the utility model, the door leaf is opened again after the pressure relief window has been opened by 90 ° during the opening of the damper. The door leaf is opened after complete pressure relief.

In a preferred embodiment of the present invention, during the process of opening the damper, the power mechanism drives the rotation shaft to rotate, the first traction rope and the second traction rope are wound on the rotation shaft simultaneously, the second traction rope is tightened first, and the first traction rope is tightened later. Therefore, the pressure relief window can be ensured to be opened first, and the structure is simple and the operation is convenient.

In a preferred embodiment of the present invention, the door leaf is rotatably connected to the door wall via a first rotating shaft, the pressure relief window is rotatably connected to the door leaf via a second rotating shaft, the first rotating shaft and the second rotating shaft are both vertically disposed, and the rotation directions of the pressure relief window and the door leaf are the same.

Above-mentioned technical scheme, first pivot is the same with the equal vertical setting of second pivot and direction of rotation, makes the line mode of first haulage rope and second haulage rope simpler from this, opens pressure relief window and door leaf moreover more laborsaving.

In a preferred embodiment of the present invention, the door leaf and the pressure relief window are both provided with a pull rope fixing device, and the first pull rope and the second pull rope are both fixedly connected with the door leaf and the pressure relief window respectively through the pull rope fixing devices.

Above-mentioned technical scheme for first haulage rope and second haulage rope are more convenient and firm with being connected of door leaf and release window.

In another preferred embodiment of the present invention, the number of the first pulling rope is two, and the two first pulling ropes are respectively fixedly connected to the upper portion and the lower portion of the door leaf.

Above-mentioned technical scheme draws the bigger door leaf of size by two first haulage ropes, and is more reliable.

In another preferred embodiment of the present invention, the power mechanism is an air supply power mechanism.

Above-mentioned technical scheme for this air door is the pneumatic type air door, compares in electrodynamic type air door, can avoid the trouble that the power failure brought completely, and says from explosion-proof capability, and more electrodynamic type air door safety is a lot.

In another preferred embodiment of the utility model, the door wall is provided with a damper switch, and the damper switch is connected with the enabling end of the power mechanism.

Among the above-mentioned technical scheme, set up the switching of this air door of people's control of being convenient for of air door switch.

Compared with the prior art, the utility model has the following beneficial effects:

1) the pneumatic air door has a leap-type progress compared with a manual opening air door, is safe and labor-saving for workers, and can pass through the large-pressure-difference air door even if a single person passes through the large-pressure-difference air door.

2) Compared with an electric air door, the anti-explosion air door can completely avoid the trouble caused by power failure, and is safer than the electric air door in terms of anti-explosion performance.

3) The existing pneumatic air door is directly opened, the risk of extrusion and sudden closing of the air door exists, personnel can pass through the pneumatic air door in a fast running mode when passing through the pneumatic air door, and the pneumatic air door is very unfavorable for underground operation and transportation.

4) The pre-pressure relief type air door firstly reduces the pressure difference at two ends of the air door and reduces the harm of the pressure difference to human organs, particularly eardrums.

5) The air door is firstly released and then opened, so that the power during opening can be reduced, and the air door can be opened more safely and reliably.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a pre-venting damper in a closed position according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a pre-decompression damper according to an embodiment of the present application, in which a pressure relief window is in an open state and a door leaf is in a closed state.

Reference numerals in the drawings of the specification include: the pressure relief window comprises a door leaf 10, a pressure relief opening 11, a pressure relief window 20, a hauling rope fixing device 30, a first hauling rope 41, a second hauling rope 42, a driving device 50, a rotating shaft 51, a power mechanism 52 and a switch 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The present invention provides a pre-decompression air door, as shown in fig. 1 and 2, in a preferred embodiment of the present invention, the pre-decompression air door comprises a driving device 50, a door leaf 10 rotatably connected with a door wall (not shown in the figure), a decompression opening 11 is arranged on the door leaf 10, and a decompression window 20 rotatably connected with the door leaf 10 and capable of sealing the decompression opening 11 is arranged at the decompression opening 11. The door leaf 10 of this embodiment is rotationally connected with the door wall through the first pivot, and the pressure relief window 20 is rotationally connected with the door leaf 10 through the second pivot, and first pivot and second pivot all vertically set up, and the direction of rotation of pressure relief window 20 is the same with the door leaf 10. In fig. 1 and 2, the right end of the door leaf 10 is shown in rotational connection with the door wall, and the right end of the pressure relief window 20 is shown in rotational connection with the door leaf 10.

The driving device 50 has a rotating shaft 51 and a power mechanism 52 for driving the rotating shaft 51 to rotate, and the power mechanism 52 may be a rotating motor or an air source power mechanism, and is preferably an air source power mechanism, i.e. a mechanism for rotating the rotating shaft 51 in a pneumatic manner, which is prior art and will not be described in detail herein. In practice, the driving device 50 may be mounted on the side wall of the mine tunnel or on a fixed plate, the driving device 50 being shown mounted on the side wall of the tunnel on the right side of the door leaf 10. The rotating shaft 51 is connected with a first pulling rope 41 and a second pulling rope 42 which can be wound thereon, and both the first pulling rope 41 and the second pulling rope 42 are steel cables. One end of the first hauling cable 41 far away from the rotating shaft 51 is fixedly connected with the door leaf 10, and one end of the second hauling cable 42 far away from the rotating shaft 51 is fixedly connected with the pressure relief window 20.

In the process of opening the air door, the driving device 50 firstly pulls the pressure relief window 20 to open through the second pulling rope 42, after the pressure is relieved, the driving device 50 then pulls the door leaf 10 to open through the first pulling rope 41, for example, after the pressure relief window 20 is opened by 90 °, the door leaf 10 is opened again.

In another preferred embodiment, as shown in fig. 1, when the damper is in the closed state, the first pull cord 41 is in a relaxed state and the second pull cord 42 is taut. As shown in fig. 2, in the process of opening the damper, the power mechanism 52 drives the rotating shaft 51 to rotate, the first traction rope 41 and the second traction rope 42 are wound on the rotating shaft 51 at the same time, and the second traction rope 42 is firstly tightened and pulls the pressure relief window 20 to open the pressure relief window 20; the first pulling rope 41 is firstly in a relaxed state, and after the pressure relief window 20 is opened by 90 degrees, the first pulling rope 41 is tightened and pulls the door leaf 10 to open the air door.

In this embodiment, the second pulling rope 42 connected to the pressure relief window 20 is provided relatively shorter than the first pulling rope 41 connected to the door leaf 10, so that the first pulling rope 41 pulls the door leaf 10 to open the door after the second pulling rope 42 pulls the pressure relief window 20 to open the pressure relief window 20 by 90 °.

In another embodiment, the door leaf 10 and the pressure relief window 20 are both provided with a pull rope fixing device 30, and the first pull rope 41 and the second pull rope 42 are both fixedly connected with the door leaf 10 and the pressure relief window 20 through the pull rope fixing device 30.

In another embodiment, the number of the first pulling rope 41 is two, and the two first pulling ropes 41 are respectively fixed to the upper portion and the lower portion of the door 10.

In another preferred embodiment, a damper switch 60 is provided on the door wall, and the damper switch 60 is connected to the enable end of the power mechanism 52. When the power mechanism 50 is an air source power mechanism, the air door switch 60 is a pneumatic control valve for controlling the air source power mechanism to work.

The pre-decompression air door is mainly applied to the connecting part between the air inlet main lane and the air return main lane, the pressure difference between two ends of the air door is large, the air door is difficult to open by manpower, the air door can be installed, and in a normal state, the decompression window 20 and the door leaf 10 are in a closed state under the wind power action of the air inlet main lane.

When the pre-decompression air door is used, the air door switch 60 is pressed down first, the power mechanism 52 starts to work, and the rotating shaft 51 is driven to rotate; the rotation shaft 51 winds the first traction rope 41 and the second traction rope 42, and the second traction rope 42 connected to the pressure relief window 20 is tightened first, so that the pressure relief window 20 can be directly pulled away. The power mechanism 52 is continuously operated, the rotating shaft 51 continues to rotate, and after the pressure relief window 20 is opened to 90 °, the first traction rope 41 pulls the door leaf 10 to rotate to the right, so as to open the air door. After the air door is completely opened, the rotating shaft 51 stops rotating, the first traction rope 41 and the second traction rope 42 are stable, after a person passes through the air door, the air door switch 60 is closed, the door leaf 10 is closed, and the pressure relief window 20 is closed.

In the present invention, the door leaf 10 and the pressure relief window 20 can be automatically closed under the wind force of the air intake main after the traction force of the first traction rope 41 and the second traction rope 42 is lost. Specifically, when the person presses the damper switch 60, the power mechanism 52 drives the rotating shaft 51 to rotate in the reverse direction to pay out the first and second pulling cords 41 and 42. The first traction rope 41 is loosened to lose traction force, so that the door leaf 10 rotates leftwards under the action of wind power of the air inlet main roadway and is closed; the second hauling cable 42 is loosened to lose the hauling force, so that the pressure relief window 20 rotates to the left to be closed under the wind force of the air intake main roadway.

The first traction rope 41 and the second traction rope 42 have certain comprehensive mechanical properties and strong deformation resistance, and are not easy to deform and lose efficacy in the long-term use process; the power mechanism is set to be constant in power, namely the rotating speed of the rotating shaft 51 is constant, so that the situation of power change cannot occur.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A pre-decompression air door is characterized by comprising a driving device and a door leaf rotatably connected with a door wall, wherein a decompression opening is formed in the door leaf, and a decompression window which is rotatably connected with the door leaf and can seal the decompression opening is formed in the decompression opening;

the driving device comprises a rotating shaft and a power mechanism for driving the rotating shaft to rotate, the rotating shaft is connected with a first traction rope and a second traction rope which can be wound on the rotating shaft, one end, far away from the rotating shaft, of the first traction rope is fixedly connected with the door leaf, and one end, far away from the rotating shaft, of the second traction rope is fixedly connected with the pressure relief window;

in the process of opening the air door, the driving device firstly pulls the pressure relief window to open through the second traction rope, and after pressure relief is carried out, the driving device pulls the door leaf to open through the first traction rope.

2. The pre-venting damper of claim 1, wherein said door leaf is reopened after said pressure relief window has opened 90 ° during opening of the damper.

3. The pre-decompression air door according to claim 1, wherein the power mechanism drives the rotation shaft to rotate during the opening of the air door, the first traction rope and the second traction rope are wound on the rotation shaft at the same time, the second traction rope is tightened first, and the first traction rope is tightened later.

4. The pre-decompression air door according to claim 1, wherein the door leaf is rotatably connected to the door wall through a first rotating shaft, the pressure relief window is rotatably connected to the door leaf through a second rotating shaft, the first rotating shaft and the second rotating shaft are both vertically arranged, and the rotating directions of the pressure relief window and the door leaf are the same.

5. The pre-decompression air door according to claim 1, wherein the door leaf and the pressure relief window are respectively provided with a traction rope fixing device, and the first traction rope and the second traction rope are respectively fixedly connected with the door leaf and the pressure relief window through the traction rope fixing devices.

6. The pre-decompression air door according to claim 1, wherein the number of the first pulling ropes is two, and the two first pulling ropes are respectively fixedly connected with the upper part and the lower part of the door leaf.

7. The pre-venting damper of any one of claims 1-6, wherein the power mechanism is an air supply power mechanism.

8. The pre-decompression air door according to any one of claims 1 to 6, wherein an air door switch is arranged on the door wall, and the air door switch is connected with an enabling end of the power mechanism.

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