Flexible mine seal

Abstract

The utility model relates to a mine flexible closed air door belongs to mine ventilation safety technical field. In view of the problem that the existing ordinary air door is insufficient in sealing and difficult to adjust air volume, the utility model discloses that the high -strength flexible sealing material with anticorrosive performance is fixedly arranged on the door frame edge, can be closely combined gap, reduces the air leakage, two independent air windows are set up on the door leaf, and each air window is equipped with the air volume adjusting device of adjustable opening degree, can accurately control total air volume and regional air volume distribution. The utility model has the advantages of reasonable structure, good sealing effect, convenient air volume adjustment, can significantly improve the stability of underground ventilation system and operation safety, is applicable to the occasion that all kinds of need closed and adjust air flow in the mine.

Description

Technical Field

[0001] This utility model relates to the field of ventilation safety control technology in underground mines, and in particular to a flexible, airtight ventilation door for mining. Background Technology

[0002] In underground mining operations, air doors, as the core structure of the ventilation system, bear the important responsibility of controlling the direction of airflow, isolating different ventilation areas, and ensuring effective ventilation in key areas such as mining areas and tunneling faces. Their performance is directly related to the efficiency of the underground ventilation system and the safety of the workers.

[0003] While ordinary and traditional airtight doors widely used in mines can achieve basic airflow isolation, they have many technical shortcomings in practical applications and cannot meet the refined, automated, and long-term ventilation safety requirements of mines. 1. Traditional sealing components cannot adapt to changes in gap caused by tunnel deformation and the opening and closing of dampers. Air leakage channels are easily formed between the door and the wall, the ground, and between the door and the door, resulting in loss of effective air volume and potentially causing safety hazards. 2. It relies heavily on manually opening and closing the ventilation windows or dampers, which is cumbersome and cannot achieve precise control according to the real-time ventilation needs underground, resulting in low efficiency. 3. The sealing components and connection structures are mostly fixed installations, which are prone to aging and damage in the humid and corrosive environment underground. Repair and replacement require complete disassembly, which is a complicated process, and the sealing performance deteriorates quickly. Utility Model Content

[0004] In response to the problems of incomplete sealing, non-automatic air adjustment, inconvenient maintenance, and poor coordination between sealing and air adjustment in existing mine ventilation doors, there is an urgent need to develop a flexible sealed mine ventilation door with adaptive multi-directional sealing, automatic and precise air adjustment, and easy-to-maintain detachable components, so as to improve the stability, safety and ease of operation and maintenance of underground ventilation systems.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A flexible, airtight ventilation door for mining includes a door and a sealing device. The side of the door is hinged to the roadway wall via a hinge. A sealing device is installed at the gap between the door and the roadway wall. The door can rotate to open and close around the hinge. A sealing device is also installed at the gap between the doors. The sealing device is connected to an external air supply system via a spiral air supply pipe. The door has a ventilation opening that can be automatically controlled to open and close. A sealing gasket is installed on the bottom surface of the door. A door handle is installed on the door.

[0006] In a preferred embodiment, the sealing device includes an air supply plate and a sealing airbag; the upper end face and both side end faces of the air door are provided with mounting grooves, the air supply plate is snapped into the mounting grooves, and the upper end face of the air supply plate is provided with a sealing airbag. After the sealing airbag is inflated, it expands and fills the gaps between the air doors and between the air doors and the tunnel wall. The sealing airbag is fixedly connected to the air supply plate and is interconnected with it.

[0007] In the preferred embodiment, the gas supply plates are interconnected by gas delivery pipes, and the gas supply plates are detachably connected to the gas delivery pipes and the mounting groove.

[0008] In a preferred embodiment, an air inlet pipe is provided at the bottom of the air supply plate, the air inlet pipe is connected to a spiral air supply pipe, and the other end of the spiral air supply pipe is connected to an external high-pressure air supply system.

[0009] In a preferred embodiment, a sealing gasket is provided at the bottom surface of the damper. The sealing gasket is detachably connected to the bottom surface of the damper by connecting bolts, and the sealing gasket fills the gap between the damper and the ground.

[0010] In a preferred embodiment, the damper has a ventilation opening, and the damper has a freely rotatable baffle plate inside. The baffle plate is arranged parallel to the front and back of the damper, and the baffle plate has a through hole corresponding to the position of the ventilation opening. The diameter of the through hole is slightly smaller than the diameter of the ventilation opening.

[0011] In a preferred embodiment, a rotary motor is vertically mounted on the damper, and the ventilation openings and through holes are arranged symmetrically around the rotary motor in a ring. The rotary motor is vertically connected to the axis of the baffle plate. The rotary motor controls the rotation of the baffle plate to control the overlap of the ventilation openings and through holes, thereby controlling the ventilation degree of the damper.

[0012] A flexible, airtight ventilation door for mining applications offers the following advantages during use: 1. The air-filled sealing device, combined with the bottom sealing gasket, can fully fill various gaps between the air door and the tunnel wall, between the air doors, and between the air door and the ground. It adapts to changes in gaps, effectively solves the problem of air leakage in traditional air doors, reduces the loss of effective air volume, and reduces safety hazards. 2. The ventilation volume is automatically adjusted by controlling the rotation of the baffle plate through a rotary motor. There is no need to manually open or close the air doors or windows. The operation is simple and can quickly adapt to the real-time ventilation needs of the mine, thus improving ventilation efficiency. 3. Key components such as sealing devices and sealing gaskets adopt a detachable connection design. When components are aged or damaged due to the underground environment, they can be quickly repaired or replaced without disassembling the entire air door, reducing maintenance costs and operational impact. 4. The overall structure is adapted to the complex underground environment. The sealing and air conditioning functions work together to help maintain stable underground airflow, optimize the performance of the ventilation system, and provide a safer environment for underground operations. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a disassembly diagram of the sealing device of this utility model; Figure 3 This is an enlarged schematic diagram of a portion of the sealing device of this utility model; Figure 4 This is a cross-sectional view of the internal control device of the overall ventilation opening of this utility model; In the diagram: 1. Air door; 2. Hinge; 3. Tunnel wall; 4. Sealing device; 5. Sealing gasket; 6. Ventilation opening; 7. Door handle; 8. Spiral air supply pipe; 9. Mounting groove; 10. Air supply plate; 11. Sealing airbag; 12. Air delivery pipe; 13. Air inlet pipe; 14. Connecting bolt; 15. Wind baffle; 16. Through hole; 17. Rotary motor. Detailed Implementation

[0014] like Figure 1 As shown, a flexible sealed air door for mining includes an air door 1 and a sealing device 4. The side of the air door 1 is hinged to the roadway wall 3 via a hinge 2. The hinge 2 is made of high-strength wear-resistant material and is fixed to the roadway wall 3 and the air door 1 with fastening bolts to ensure that the air door 1 can stably rotate and open and close around the hinge 2. Sealing devices 4 are provided at the gaps between the air door 1 and the roadway wall 3, as well as at the gaps between the air doors 1, to achieve multi-directional gap sealing. The sealing device 4 is connected to an external air supply system through a spiral air supply pipe 8 to ensure a stable supply of air required for sealing. The air door 1 is equipped with an automatically controllable ventilation opening 6 for precise adjustment of ventilation volume; a sealing gasket 5 is installed on the bottom surface of the air door 1. The sealing gasket 5 is made of wear-resistant and corrosion-resistant flexible material, which is suitable for the humid and complex underground environment; the air door 1 is equipped with a door handle 7 for easy manual opening and closing by operators.

[0015] Preferred solutions include Figure 2 As shown, the sealing device 4 includes an air supply plate 10 and a sealing airbag 11. Mounting grooves 9 are provided on the upper and side faces of the damper 1. The dimensions of the mounting grooves 9 are precisely matched with the air supply plate 10, and the air supply plate 10 is securely fastened within the mounting grooves 9. A sealing airbag 11 is provided on the upper face of the air supply plate 10. The sealing airbag 11 is made of high-strength, flexible, and wear-resistant material, possessing good elasticity and sealing properties. After inflation, it can expand evenly and tightly fill the gaps between the dampers 1 and between the dampers 1 and the tunnel wall 3, effectively blocking air leakage channels. The sealing airbag 11 and the air supply plate 10 are fixedly connected by sealing adhesive or fastening bolts and are internally interconnected, ensuring smooth air supply and good airtightness.

[0016] Preferred solutions include Figure 3 As shown, the gas supply plates 10 are interconnected by gas transmission pipes 12. The gas transmission pipes 12 are made of high-pressure resistant and corrosion-resistant materials, which are suitable for the harsh environment downhole and can ensure that the gas supply plates 10 supply gas evenly, so that the sealing airbags 11 expand synchronously. The gas supply plates 10 and the gas transmission pipes 12 are connected by threads or quick connectors. The gas supply plates 10 and the mounting grooves 9 are detachable, which facilitates subsequent maintenance and replacement of parts.

[0017] Preferred solutions include Figure 3 As shown, an air inlet pipe 13 is provided at the bottom of the air supply plate 10. The air inlet pipe 13 is connected to the spiral air supply pipe 8 through a sealing thread to prevent air leakage. The spiral air supply pipe 8 has a telescopic feature and can flexibly extend and retract with the opening and closing of the damper 1 to avoid damage to the pipeline. Its other end is stably connected to the external high-pressure air supply system to continuously provide sufficient air supply to the sealing device 4.

[0018] Preferred solutions include Figure 3 As shown, a sealing gasket 5 is provided at the bottom surface of the damper 1. The sealing gasket 5 is detachably connected to the bottom surface of the damper 1 by connecting bolts 14. The connecting bolts 14 are evenly arranged along the edge of the sealing gasket 5 to ensure a firm connection. The surface of the sealing gasket 5 can conform to the ground and has a certain degree of elasticity, which can adapt to the slight unevenness of the ground and tightly fill the gap between the damper 1 and the ground, further improving the overall sealing performance.

[0019] Preferred solutions include Figure 4 As shown, the damper 1 has ventilation openings 6, which are evenly distributed in the middle area of ​​the damper 1 to ensure uniform ventilation. Inside the damper 1, there is a freely rotatable baffle 15, which is rotatably connected to the damper 1 via bearings to ensure smooth rotation. The baffle 15 is arranged parallel to the front and back of the damper 1. The baffle 15 has through holes 16 corresponding to the positions of the ventilation openings 6. The diameter of the through holes 16 is slightly smaller than the diameter of the ventilation openings 6. The ventilation volume is adjusted by changing the overlapping area of ​​the two.

[0020] Preferred solutions include Figure 4 As shown, a rotary motor 17 is vertically mounted on the damper 1 via a motor bracket. The motor bracket is securely connected to the damper 1 to ensure stable motor installation. The ventilation openings 6 and through holes 16 are symmetrically arranged around the rotary motor 17 in a ring, ensuring smooth ventilation volume adjustment and uniform force on the baffle plate 15. The rotary motor 17 is vertically fixed to the axis of the baffle plate 15. The rotary motor 17 can be connected to the downhole control system to receive real-time ventilation demand signals and control the precise rotation of the baffle plate 15, thereby adjusting the overlap of the ventilation openings 6 and through holes 16 to achieve automatic and precise control of the ventilation volume of the damper 1.

Claims

1. A flexible, airtight ventilation door for mining, comprising a ventilation door (1) and a sealing device (4), characterized in that: The side of the air door (1) is hinged to the tunnel wall (3) by a hinge (2). A sealing device (4) is provided at the gap between the air door (1) and the tunnel wall (3). The air door (1) flips around the hinge (2) to open and close. A sealing device (4) is also provided at the gap between the air doors (1). The sealing device (4) is connected to the external air supply system through a spiral air supply pipe (8). A ventilation opening (6) that can automatically control the opening and closing size is provided on the air door (1). A sealing gasket (5) is installed on the bottom surface of the air door (1). A door handle (7) is provided on the air door (1).

2. The mine flexible airtight door according to claim 1, characterized in that: The sealing device (4) includes an air supply plate (10) and a sealing airbag (11); the upper end face and the two side end faces of the air door (1) are provided with mounting grooves (9), the air supply plate (10) is snapped into the mounting groove (9), the upper end face of the air supply plate (10) is provided with a sealing airbag (11), the sealing airbag (11) is inflated and expands and fills the gap between the air doors (1) and between the air doors (1) and the roadway wall (3), the sealing airbag (11) is fixedly connected to the air supply plate (10) and communicates with each other.

3. The mine flexible airtight door according to claim 2, characterized in that: The gas supply plates (10) are interconnected by gas transmission pipes (12), and the gas supply plates (10), gas transmission pipes (12), and mounting grooves (9) are detachably connected.

4. The mine flexible airtight door according to claim 2, characterized in that: An air inlet pipe (13) is provided at the bottom of the air supply plate (10). The air inlet pipe (13) is connected to the spiral air supply pipe (8). The other end of the spiral air supply pipe (8) is connected to the external high-pressure air supply system.

5. The mine flexible airtight door according to claim 1, characterized in that: A sealing gasket (5) is provided on the bottom surface of the damper (1). The sealing gasket (5) is detachably connected to the bottom surface of the damper (1) by a connecting bolt (14). The sealing gasket (5) fills the gap between the damper (1) and the ground.

6. The mine flexible airtight door according to claim 1, characterized in that: A ventilation opening (6) is provided on the damper (1), and a freely rotatable baffle plate (15) is provided inside the damper (1). The baffle plate (15) is arranged parallel to the front and back of the damper (1). A through hole (16) corresponding to the position of the ventilation opening (6) is provided on the baffle plate (15). The diameter of the through hole (16) is smaller than the diameter of the ventilation opening (6).

7. The mine flexible airtight door according to claim 6, characterized in that: A rotary motor (17) is vertically mounted on the damper (1). The ventilation opening (6) and the through hole (16) are arranged symmetrically around the rotary motor (17). The rotary motor (17) is vertically connected to the axis of the baffle plate (15). The rotary motor (17) controls the baffle plate (15) to rotate so as to control the overlap of the ventilation opening (6) and the through hole (16), thereby controlling the ventilation degree of the damper (1).

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