Air blocking device suitable for underground air door
By designing a door frame, steel plate and traction rope system on the underground damper, the problem of poor sealing of the damper is solved, the service life of the rubber strip is extended, the material consumption is reduced, and the stable sealing and low-cost management of the damper are achieved.
Patent Information
- Application Number
- CN202521814442.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2035-08-26
AI Technical Summary
The mine air door has poor sealing and serious air leakage due to the uneven floor of the underground tunnel. The traditional rubber strips are severely worn and cannot effectively prevent air leakage. Ventilation management is difficult and the material cost is high.
A wind-blocking device suitable for underground air doors is designed, including a door frame, door beam, reinforcement block, steel plate, rubber strip and traction rope system. Through the traction of the traction rope, the steel plate is rotated and lifted, and the first rubber strip is retracted into the guide groove to avoid scratching with stones and silt. The guide rail and guide groove are combined to control the lifting and lowering of the steel plate to ensure the sealing of the air door.
It extends the service life of the rubber strip, improves the sealing of the damper, reduces material consumption, facilitates ventilation management, and reduces modification costs.
Smart Images
Figure CN223410886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of deep mines, in particular to a wind blocking device suitable for an underground air door. Background Art
[0002] The mine ventilation system is the most important auxiliary production system for safe mine production. The underground ventilation system is a sophisticated ventilation network. Damper control the direction of airflow and adjust the air volume to maintain the wind pressure balance in each area. Air leakage can disrupt this balance, causing airflow turbulence, reducing the effective air volume rate, and increasing the energy consumption of ventilation operations. The essence of underground damper leakage is that the airflow flows through the gap between the damper and the surrounding structure. The sealing of the damper is key to ensuring the delivery of fresh air to the working surface and the timely discharge of dirty air. It can not only accurately control the direction of underground airflow and adjust the air volume distribution to ensure that fresh air is delivered to the working surface as needed, but also prevent the spread of toxic and harmful gases (such as gas and carbon monoxide) and dust, creating a safe working environment for miners. It plays a decisive role in ensuring the stability and safety of the mine ventilation system.
[0003] Currently, mine dampers face numerous practical challenges, including severe air leakage. Due to the rough, uneven floor of underground tunnels, falling stones and silt accumulation often occur. This prevents the damper bottom from fitting tightly against the tunnel floor, resulting in poor airtightness and air leakage. Traditional solutions often involve attaching rubber strips around the damper to prevent air leakage. However, due to the high number of stones on the tunnel floor, the rubber strips wear severely when the damper is opened and closed, making the air leakage problem difficult to completely resolve. This complicates ventilation management and increases material costs. Utility Model Content
[0004] In order to overcome the deficiencies in the prior art, the utility model provides an air blocking device suitable for an underground air door.
[0005] To solve the above technical problems, the present invention provides the following technical solutions: a wind blocking device suitable for an underground air door, comprising a door frame, a door beam provided on the top surface of the door frame, the length of the door beam being greater than the length of the door frame, a plurality of reinforcement blocks symmetrically provided on both sides of the door frame, the ends of the door beam being flush with the top surfaces of the reinforcement blocks on both sides of the door frame; a pair of air doors provided inside the door frame; a pair of steel plates symmetrically provided on both sides of the bottom of the air door, a first rubber strip provided inside the steel plate, one end of the first rubber strip extending from the bottom end of the steel plate, and a second rubber strip provided on the bottom surface of the air door;
[0006] A pair of guide rails are provided on the surface of the damper, one guide rail is located above the damper and at the midpoint of the top edge of the damper; the other guide rail is located at the outer opposite end of the damper and above the midpoint of the side edge of the damper; a traction rope is wound between the guide rails.
[0007] Preferably, a guide groove is provided on one side of the bottom of the damper, the guide groove is located on one side of the door frame, and one end of the steel plate is hinged to the lower inner portion of the guide groove.
[0008] Preferably, a connecting hole is provided on the opposite end above the steel plate, a traction rope is connected to the inside of the connecting hole, and the traction rope is wound from the outside of the lower guide rail to the inside of the upper guide rail.
[0009] Preferably, a spring is provided on the traction rope between the two guide rails; a ring is provided on the top surface of the damper, the ring is located above the guide rail, one end of the traction rope passes through the center of the ring and is fixed to the door beam.
[0010] Preferably, the second rubber strip is located below the hinged end of the steel plate, the thickness of the second rubber strip is the same as that of the first rubber strip, and the bottom end of the second rubber strip is flush with the bottom end of the first rubber strip.
[0011] Beneficial effects of the utility model:
[0012] 1. The utility model provides a wind-blocking device suitable for an underground damper. By setting a traction rope and a steel plate, under the traction of the traction rope, the steel plate is rotated and lifted, and the first rubber strip is retracted into the guide groove, which effectively avoids the first rubber strip from being scratched by stones and mud on the damper bottom plate, prolongs the service life of the first rubber strip, ensures the sealing of the damper, facilitates ventilation management, and reduces material consumption.
[0013] 2. The wind blocking device suitable for underground air doors provided by the utility model can effectively control the lifting and lowering of the steel plate by the traction rope through the provision of a circular ring, a guide rail and a guide groove, thereby ensuring the stability of the device.
[0014] 3. The wind blocking device provided by the utility model is suitable for underground air doors. The first rubber strip is fixed to the steel plate by screws, which facilitates the replacement and cleaning of the first rubber strip.
[0015] 4. The wind blocking device provided by the utility model is suitable for underground air doors. By being installed on the outside of the air door, the existing air doors in underground mines can be modified without changing the structure of the air door itself. It is easy to install and has low modification cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the use process of the utility model.
[0018] Description of reference numerals:
[0019] 1. Door frame; 11. Door beam; 12. Reinforcement block; 2. Air damper; 21. Guide rail; 22. Guide groove; 3. Traction rope; 31. Spring; 32. Ring; 4. Steel plate; 41. First rubber strip; 42. Second rubber strip; 43. Connecting hole. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1 To the attached Figure 2 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0021] See also Figure 1-Figure 2 , a wind-blocking device suitable for underground air doors, including a door frame 1, a door beam 11 is provided on the top surface of the door frame 1, the length of the door beam 11 is greater than the length of the door frame 1, and a plurality of reinforcement blocks 12 are symmetrically provided on both sides of the door frame 1, and the two ends of the door beam 11 are flush with the top surfaces of the reinforcement blocks 12 on both sides of the door frame 1; a pair of air doors 2 are provided inside the door frame 1; a pair of steel plates 4 are symmetrically provided on both sides of the bottom of the air door 2, a first rubber strip 41 is provided inside the steel plate 4, one end of the first rubber strip 41 extends from the bottom end of the steel plate 4, and a second rubber strip 42 is provided on the bottom surface of the air door 2; the pair of air doors 2 are installed through the door frame 1 and the door beam 11, and the door frame 1 is reinforced by the reinforcement block 12; the top of the air door 2 is sealed by the first rubber strip 41 and the second rubber strip 42.
[0022] A guide groove 22 is provided on one side of the bottom of the damper 2. The guide groove 22 is located on one side of the door frame 1, and one end of the steel plate 4 is hinged at the bottom inside the guide groove 22. The guide groove 22 is rectangular, and one side of the long end of the guide groove 22 is in contact with the side of the damper 2. When the two dampers 2 are closed, the steel plate 4 and the guide groove 22 are perpendicular to each other.
[0023] A pair of guide rails 21 are provided on the surface of the damper 2, one guide rail 21 is located above the damper 2 and at the midpoint of the top edge of the damper 2; the other guide rail 21 is located at the outer opposite end of the damper 2 and above the midpoint of the side edge of the damper 2; a traction rope 3 is wound between the guide rails 21; the traction rope 3 moves inside the path between the two guide rails 21.
[0024] A connecting hole 43 is provided on the opposite end above the steel plate 4, and a traction rope 3 is connected to the inside of the connecting hole 43. The traction rope 3 is wound from the outside of the lower guide rail 21 to the inside of the upper guide rail 21; the traction rope 3 is connected to the steel plate 4, and the traction rope 3 moves in the path between the damper 2 and the guide rail 21, thereby driving the movement of the steel plate 4, and then causing the steel plate 4 to rotate inside the guide groove 22.
[0025] A spring 31 is provided on the traction rope 3 between the two guide rails 21; a circular ring 32 is provided on the top surface of the damper 2, and the circular ring 32 is located above the guide rail 21. One end of the traction rope 3 passes through the center of the circular ring 32 and is fixed to the door beam 11; the other end of the traction rope 3 passes through the circular ring 32 and is fixed to the door beam 11. During the opening process of the damper 2, the traction rope 3 is pulled to move, and the length of the traction rope 3 is extended by the spring 31, so that the maximum extension of the traction rope 3 is greater than the rotation amount of the steel plate 4, and the damper 2 can be driven to reset. At the same time, the steel plate 4 is pulled upward during the movement of the traction rope 3. When the traction rope 3 pulls the steel plate 4, the steel plate 4 is rotated and lifted along the rotating shaft. The length of the steel plate 4 is equal to that of the damper 2, and the thickness of the steel plate 4 is slightly smaller than the gap of the guide groove 22, thereby driving the first rubber strip 41 to move upward.
[0026] The second rubber strip 42 is located below the hinged end of the steel plate 4. The thickness of the second rubber strip 42 is the same as that of the first rubber strip 41, and the bottom end of the second rubber strip 42 is flush with the bottom end of the first rubber strip 41. The first rubber strip 41 is below the steel plate 4, and a certain gap is left at the bottom and lower side of the damper 2 to facilitate the extension and retraction of the first rubber strip 41. The first rubber strip 41 is fixed to the steel plate 4 by fixing screws, and the second rubber strip 42 is installed at the bottom of the damper 2. The first rubber strip 41 is aligned with the second rubber strip 42 to seal the bottom of the damper 2.
[0027] During use, when the damper 2 is in a sealed state, the steel plate 4 and the first rubber strip 41 are under the gravity state, the first rubber strip 41 extends out of the damper and is aligned with the second rubber strip 42. The first rubber strip 41 and the second rubber strip 42 seal the damper 2 and the bottom plate to prevent the air flow from passing through; when the damper 2 is opened, the traction rope 3 extends out of the damper 2 and is pulled by the traction force of the traction rope 3. The traction rope 3 rises along the ring 32 and the guide rail 21, pulling the steel plate 4 and the first rubber strip 41 to rotate and lift along the guide groove 22, and the first rubber strip 41 is retracted to the damper 2 Inside, until the damper 2 is fully opened; during the closing process of the damper 2, the force of the traction rope 3 gradually decreases, and under the action of the gravity of the steel plate 4, the steel plate 4 and the first rubber strip 41 descend along the guide groove 22 until the damper 2 is fully closed, the steel plate 4 falls flat, and the first rubber strip 41 extends out of the damper 2, and cooperates with the second rubber strip 42 to block the gap between the damper 2 and the bottom plate, effectively avoiding the first rubber strip 41 and the stones and silt on the bottom plate of the damper 2, extending the service life of the first rubber strip 41, ensuring the sealing of the damper 2, facilitating ventilation management, and reducing material consumption.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. The wind blocking device applicable to underground air door includes: A door frame (1), characterized in that: a door beam (11) is provided on the top surface of the door frame (1), the length of the door beam (11) is greater than the length of the door frame (1), a plurality of reinforcement blocks (12) are symmetrically provided on both sides of the door frame (1), and both ends of the door beam (11) are flush with the top surfaces of the reinforcement blocks (12) on both sides of the door frame (1); a pair of dampers (2) are provided inside the door frame (1); a pair of steel plates (4) are symmetrically provided on both sides of the bottom of the damper (2), a first rubber strip (41) is provided inside the steel plate (4), one end of the first rubber strip (41) extends from the bottom end of the steel plate (4), and a second rubber strip (42) is provided on the bottom surface of the damper (2); A pair of guide rails (21) are provided on the surface of the damper (2), one guide rail (21) being located above the damper (2) and at the midpoint of the top edge of the damper (2); the other guide rail (21) being located at the outer opposite end of the damper (2) and above the midpoint of the side edge of the damper (2); and a traction rope (3) being wound between the guide rails (21).
2. The wind blocking device suitable for underground dampers according to claim 1, characterized in that: A guide groove (22) is provided on one side of the bottom of the damper (2), the guide groove (22) being located on one side of the door frame (1), and one end of the steel plate (4) is hinged to the lower interior of the guide groove (22).
3. The wind blocking device suitable for underground dampers according to claim 2, characterized in that: A connection hole (43) is provided on the opposite end above the steel plate (4), and a traction rope (3) is connected inside the connection hole (43). The traction rope (3) is wound from the outside of the lower guide rail (21) to the inside of the upper guide rail (21).
4. The wind blocking device suitable for underground dampers according to claim 3, characterized in that: A spring (31) is provided on the traction rope (3) at a position between the two guide rails (21); a ring (32) is provided on the top surface of the damper (2), and the ring (32) is located above the guide rail (21); one end of the traction rope (3) passes through the center of the ring (32) and is fixed to the door beam (11).
5. The wind blocking device suitable for underground dampers according to claim 4, characterized in that: The second rubber strip (42) is located below the hinged end of the steel plate (4), the thickness of the second rubber strip (42) is the same as that of the first rubber strip (41), and the bottom end of the second rubber strip (42) is flush with the bottom end of the first rubber strip (41).