CN216691146U - Pneumatic automatic pressure relief device of mining air door - Google Patents

Abstract

The utility model discloses a pneumatic automatic pressure relief device of a mining air door, wherein an air door leaf of the air door is provided with an installation cavity, the automatic pressure relief device is arranged in the installation cavity, and the automatic pressure relief device comprises a first fixed part provided with a pressure relief window, a power part and a sliding part; wherein the first fixed part is connected with the air door fan of the air door; the power part is at least positioned on one side of the pressure relief window in the width direction of the wind door leaf; the power part is located one side of the first fixing part in the thickness direction of the air door leaf, a gap is formed between the power part and the first fixing part, the sliding part is located in the gap between the first fixing part and the power part, and the power part drives the sliding part to slide along the gap in the height direction of the air door leaf, so that the pressure relief window is shielded or exposed. One aspect of the embodiment of the utility model provides a pneumatic automatic pressure relief device for a mining air door, which can fundamentally solve the technical obstacle that the air door is difficult to open due to the increase of resistance caused by the pressure difference of compressed air.

Description

Pneumatic automatic pressure relief device of mining air door

Technical Field

The utility model relates to the technical field of pressure relief devices, in particular to a pneumatic automatic pressure relief device for a mining air door.

Background

Conventional mining pneumatic air door relies on the compressed air to drive actuating cylinder and promote the air door fan of air door and open, and the air door fan both sides of air door can bear great pressure differential when air door place tunnel wind pressure is great for the open resistance increase of air door. The conventional solution is: the specification and the pressure of the compressed air of the air cylinder are increased, and the size of a power arm pushed by the air cylinder is increased by changing the air cylinder connecting structure of the air door, so that the opening moment of the air door when the air door is opened is increased. But in the actual working condition: the adjustment of the cylinder specification and the opening torque of the pneumatic air door is limited due to the limitation of objective factors such as the appearance, the installation position, the roadway size and the like of the pneumatic air door; the pressure of the mine underground compressed air is limited by roadway distance and underground air working conditions, so that the large floating of the mine underground compressed air cannot be used as an effective utilization factor. Therefore, the problem of resistance increase caused by compressed air pressure difference is fundamentally solved, and the problem of difficulty in opening the air door is solved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, according to one aspect of the embodiment of the utility model, the pneumatic automatic pressure relief device for the mining air door is provided, which can fundamentally solve the technical obstacle that the air door is difficult to open due to the increased resistance caused by the difference of the compressed air pressure.

According to an aspect of the embodiment of the present invention, a pneumatic automatic pressure relief device for a mine air door is provided, wherein an air door leaf of the air door is provided with a mounting cavity, the automatic pressure relief device is arranged in the mounting cavity, and the automatic pressure relief device includes:

the first fixing piece is provided with a pressure relief window and is connected with the air door fan of the air door;

a power member; the power part is at least positioned on one side of the pressure relief window in the width direction of the wind door leaf; the power part is positioned on one side of the first fixed part in the thickness direction of the wind door leaf, and a gap is formed between the power part and the first fixed part; and

the sliding piece is positioned in the gap between the first fixed piece and the power piece, and the power piece drives the sliding piece to slide along the gap in the height direction of the wind door leaf, so that the pressure relief window is shielded or exposed.

In some embodiments, the power member comprises a power cylinder and a protection member; wherein the power cylinder is arranged in the fan blade; the protection piece is arranged outside the power cylinder and seals the power cylinder; one side of the protection piece is connected with the air door leaf in the thickness direction of the air door leaf, and the other side of the protection piece is located between the sliding piece and the power cylinder.

In some embodiments, the power member includes a fixed base plate disposed on the damper fan below the pressure relief window, and the power cylinder is disposed above the fixed base plate.

In some embodiments, the upper end of the sliding member is connected to the end of the piston rod of the power cylinder in the height direction of the wind door leaf, and the operation of the power cylinder drives the sliding member to move in the gap.

In some embodiments, the device further comprises a slide way arranged above the power cylinder, and the sliding piece slides along the slide way in the height direction of the wind door leaf.

In some embodiments, the power cylinder and the damper cylinder of the damper are the same power source, and the power cylinder and the damper cylinder operate synchronously.

In some embodiments, the device further comprises a second fixing member, the second fixing member is arranged opposite to the first fixing member, and a certain distance is arranged between the second fixing member and the first fixing member; the second fixing member is positioned above the protection member.

The automatic pressure relief device of the embodiment of the utility model solves the proportional relation between the opening power and the bearing capacity of the air door, the air door only needs to overcome the resistance of the air door equipment such as friction and the like when being opened, and the automatic pressure relief device can open the air door in any pressure difference environment without increasing the driving capacity without limitation and is irrelevant to the wind pressure of a roadway. The utility model greatly reduces the physical size of the wind pressure driving device, and greatly improves the actual passing capacity of the air door under the condition of a certain appearance of the air door.

Drawings

Fig. 1 is a schematic view of an automatic pressure relief device of an embodiment of the present invention installed in a windmill door leaf.

Fig. 2 is a cross-sectional view a-a of the automatic pressure relief device of fig. 1.

Fig. 3 is a front view of the automatic pressure relief device of the embodiment of the present invention in an unpressurized state.

Fig. 4 is a cross-sectional view a-a of fig. 3.

Fig. 5 is a cross-sectional view of C-C in fig. 3.

Fig. 6 is a rear view of fig. 3.

Fig. 7 is a side view of the automatic pressure relief device of an embodiment of the present invention in a pressure relief state.

Reference numerals:

automatic pressure relief device 100

A first fixing member 1;

a pressure relief window 2;

a power member 3; a power cylinder 31; a protector 32; a fixed base plate 33;

a slideway 4;

a second fixing member 5;

a slider 6; a fixing bolt 7;

a fan door leaf 200; a door frame 300; the group 400 is driven.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

A pneumatic automatic pressure relief device 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 7.

According to one aspect of the embodiment of the utility model, the pneumatic automatic pressure relief device 100 for the mining air door is provided, wherein an air door leaf 200 of the air door is provided with a mounting cavity, and the automatic pressure relief device is arranged in the mounting cavity and comprises a first fixed part 1 provided with a pressure relief window 2, a power part 3 and a sliding part 6; wherein the first fixing member 1 is connected with the air door leaf 200 of the air door; the power part 3 is at least positioned on one side of the pressure relief window 2 in the width direction of the wind door leaf 200; the power member 3 is located on one side of the first fixing member 1 in the thickness direction of the wind door leaf 200, and has a gap with the first fixing member 1. The sliding part 6 is positioned in the gap between the first fixed part 1 and the power part 3; and the power part 3 drives the sliding part 6 to slide along the gap in the height direction of the wind door leaf 200, so as to shield or expose the pressure relief window 2.

In order to make the technical solution of the present application more easily understood, the technical solution of the present application will be described below by taking as an example that the width direction of the damper fan 200 coincides with the left-right direction, the height direction coincides with the up-down direction, and the thickness direction coincides with the front-back direction, wherein the up-down direction, the left-right direction, and the front-back direction are as shown in fig. 1 and 2.

As shown in fig. 1-2, the pneumatic automatic pressure relief device 100 is disposed on an air door fan 200 of a mining pneumatic air door, and the pneumatic automatic pressure relief device 100 includes a first fixing member 1 provided with a pressure relief window 2, where the first fixing member 1 may be an external panel. The lower part of the outer panel is provided with a pressure relief window 2 with a proper size, and the pressure relief window 2 is used for connecting the pressure difference of the front side and the rear side of the ventilation door leaf 200, so that the air door is a non-pressure air door.

Optionally, the periphery of the outer panel is fixedly connected to the wind door leaf 200 by fixing bolts 7 as shown in fig. 3, and the outer panel is disposed at one side in front of the wind door leaf 200. Meanwhile, the number of the power members 3 is one or more, in use, two power members 3 are provided behind the first fixing member 1 and symmetrically provided on the left and right sides of the pressure relief window 2, respectively, and the power members 3 and the first fixing member 1 have a gap in the front-rear direction, as shown in fig. 5.

The sliding member 6 in this embodiment is located in the gap between the power member 3 and the first fixed member 1 in the front-rear direction, and the sliding member 6 can be understood as a sliding plate; the left side and the right side of the sliding plate are respectively connected with the two power parts 3 on the left side and the right side of the pressure relief window 2, and the sliding parts 6 can slide in the gap in the vertical direction along with the driving of the power parts 3, so that the pressure relief window 2 is shielded or exposed. The pneumatic automatic pressure relief device 100 in this embodiment is a device configured in a mining pneumatic air door, and is used for performing synchronous automatic pressure relief on air pressures on the front side and the rear side of the air door when the air door is opened, so as to greatly reduce the opening resistance of the air door.

In some embodiments, the power member 3 includes a power cylinder 31 and a protection member 32; wherein the power cylinder 31 is arranged inside the wind door leaf 200; the protector 32 is disposed outside the power cylinder 31 to seal the power cylinder 31 and has one side connected to the damper door 200 and the other side between the slider 6 and the power cylinder 31 in the thickness direction of the damper door 200.

As shown in fig. 4-5, the power member 3 in this embodiment comprises a power cylinder 31, a fixing base plate 33 and a protection member 32, wherein the fixing base plate 33 is disposed on the wind door leaf 200 and below the pressure relief window 2 by the fixing bolt 7, and the power cylinder 31 is disposed above the fixing base plate 33.

The protection member 32 is disposed outside the power cylinder 31, which means that the protection member 32 is a [ -shaped component, specifically, the protection member is disposed in front of and behind the power cylinder 31 and at the pressure relief window 2, wherein one side of the protection member 32 behind the power cylinder 31 is connected to the air door leaf 200 through the fixing bolt 7; the side of the protection member 32 located in front of the power cylinder 31 is located between the slider 6 and the power cylinder 31 as shown in fig. 5 and 6. The protection member 32 in this embodiment not only has the function of fixing the power cylinder 31 to seal and protect the power cylinder 31, but also can separate the power cylinder 31 from the sliding member 6 to ensure the smooth operation of the sliding member.

In some embodiments, the upper end of the sliding member 6 in the height direction of the damper fan 200 is connected to the end of the piston rod of the power cylinder 31, and the operation of the power cylinder 31 drives the sliding member 6 to move in the gap.

Specifically, as shown in FIG. 4, the sliding member 6 is

The structure can be understood that the sliding part 6 is an integral structure formed by vertically arranging a transverse plate and a vertical plate, wherein one end part of the transverse plate is vertically arranged with the end part of one end of the vertical plate, and one end of the transverse plate far away from the vertical plate is connected with the piston of the power cylinder 31The ends of the rods are connected and located above the power cylinder 31, while the vertical plate is located between the protection 32 and the first fixing 1.

It should be noted that the height of the vertical plate is greater than the height of the pressure relief window in the up-down direction.

In some embodiments, the pneumatic automatic pressure relief device 100 further comprises a slide 4, the slide 4 being disposed above the power cylinder 31, and the slider 6 sliding along the slide 4 in the up-down direction. The arrangement of the slideway 4 in the embodiment shown in fig. 5 not only makes the sliding member 6 have small friction force during sliding but also can limit the sliding member 6, so as to prevent the sliding member 6 from moving in the front-back direction.

In some embodiments, the pneumatic automatic pressure relief device 100 further comprises a second fixing member 5, the second fixing member 5 is disposed opposite to the first fixing member 1, and the second fixing member is spaced apart from the first fixing member; the second fixing member 5 is located above the protection member 32.

As shown in fig. 2 and fig. 6, the pneumatic automatic pressure relief device 100 further includes a second fixed member 5, and the second fixed member 5 is disposed opposite to the first fixed member 1 in the front-rear direction and spaced by a certain distance, so as to facilitate the up-and-down movement of the power cylinder 31 and the sliding member 6.

It should be noted that a certain gap is formed between the end of one end of the transverse plate far away from the vertical plate and the second fixing member 5, and the top end of the second fixing member 5 is connected with the air door leaf 200 through the fixing bolt 7; meanwhile, when the end of the piston rod of the power cylinder 31 moves to the uppermost end, the bottom of the vertical plate in the sliding member 6 is located above the pressure relief window 2, and a certain distance is also kept between the end of the piston rod and the top of the second fixing member 5.

In some embodiments, the power cylinder 31 is co-powered with the damper cylinder of the damper and operates in synchronization.

Specifically, as shown in fig. 1, the mining pneumatic air door includes an air door leaf 200, a door frame 300, a driving set 400 and an automatic pressure relief device 100, wherein the pneumatic automatic pressure relief device 100 is disposed in an installation cavity reserved on the air door leaf 200, the driving set 400 drives the air door leaf 200 to open and close, the driving set 400 and a power part 3 of the pneumatic automatic pressure relief device 100 are both the same power source, and the driving set 400 and the power part 3 are synchronously connected to the power source.

The optional driving group 400 is an air door cylinder, the power source can be understood as a pressure air source, when the air door leaf 200 is opened, a rodless cavity of the air door cylinder is communicated with the pressure air source, the rodless cavity of the power cylinder 31 of the automatic pressure relief device 100 is synchronously pressurized in the air path design, the power cylinder 31 acts to push the sliding piece 6 to move upwards so that the pressure relief window 2 is opened as shown in fig. 7, the pressure difference between two sides of the air door is reduced, when the pressure difference is reduced to the extent that the air door driving device can overcome the opening, the air door is automatically opened, and theoretically, the air door is a non-pressure air door, so that the air door is ensured to be easily opened. As shown in FIG. 4, due to the synchronous design of the air passage, the sliding part 6 moves downwards to close the pressure relief window 2 synchronously under the closing command of the air door fan 200, and in this state, the air door is closed, so that the air flow at two sides of the air door can be blocked, the air door sealing in a normal state is ensured, and the air door has a management effect on the air flow of the roadway.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean 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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (7)

1. The pneumatic automatic pressure relief device for the mining air door is characterized in that an air door leaf of the air door is provided with an installation cavity, and the automatic pressure relief device is arranged in the installation cavity; the automatic pressure relief device comprises:

the first fixing piece is provided with a pressure relief window and is connected with the air door fan of the air door;

a power member; the power part is at least positioned on one side of the pressure relief window in the width direction of the wind door leaf; the power part is positioned on one side of the first fixing part in the thickness direction of the wind door leaf, and a gap is formed between the power part and the first fixing part; and

the sliding piece is positioned in the gap between the first fixed piece and the power piece, and the power piece drives the sliding piece to slide along the gap in the height direction of the wind door leaf, so that the pressure relief window is shielded or exposed.

2. The apparatus of claim 1, wherein the power member comprises a power cylinder and a guard member; wherein the power cylinder is arranged in the fan blade; the protection piece is arranged outside the power cylinder and seals the power cylinder, one side of the protection piece in the thickness direction of the air door leaf is connected with the air door leaf, and the other side of the protection piece is located between the sliding piece and the power cylinder.

3. The apparatus of claim 2, wherein the power member comprises a fixed floor disposed on the damper leaf and below the pressure relief window; the power cylinder is arranged above the fixed bottom plate.

4. The device as claimed in claim 2 or 3, wherein the upper end of the sliding member is connected to the end of the piston rod of the power cylinder in the height direction of the fan blade, and the operation of the power cylinder drives the sliding member to move in the gap.

5. The device of claim 4, further comprising a slide disposed above the power cylinder, the slider sliding along the slide in a height direction of the fan blade.

6. The device of claim 2 or 3, wherein the power cylinder and the damper cylinder of the damper are in the same power source, and the power cylinder and the damper cylinder operate synchronously.

7. The device of claim 4, further comprising a second fixture disposed opposite the first fixture and spaced apart from the first fixture; the second fixing member is positioned above the protection member.

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