Casement air door suitable for mine laneway air reversing condition
By designing a swing damper suitable for the backwind conditions of mine tunnels, using rotatable door leaf, removable baffle and spring fixing bolts, the problem that the existing damper cannot be sealed and opened under the backwind conditions is solved, and the ventilation requirement of the damper in both front and back directions is achieved.
Patent Information
- Application Number
- CN202422193686.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing swing door cannot meet the sealing and opening requirements of the blower for reverse incoming wind under the backwind conditions, and cannot meet the ventilation needs of the mine tunnel under the backwind conditions.
A swing damper suitable for the backwind conditions of mine tunnels is designed, and a rotatable door leaf, removable baffle, spring fixing bolts and extruded sealing strips are used to ensure that the damper can be sealed and opened under backwind conditions.
The damper can be sealed and opened under both forward and reverse wind conditions, meeting the ventilation needs of mine tunnels under reverse wind conditions, with a simple structure, convenient reversal and reliable use.
Smart Images
Figure CN222949903U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mine tunnel ventilation, in particular to a flat-opening air door suitable for reverse wind conditions in mine tunnels. Background Art
[0002] Mine ventilation is an important auxiliary link in the coal mine production system and a basic requirement for ensuring the life safety of underground workers. Mine dampers play a vital role in the mine ventilation system. Their main functions include blocking the wind flow, adjusting the air volume, ensuring the stability of the ventilation system, and ensuring the safety of miners. In the mine production process, once a fire accident occurs, the mine fan needs to be reversed to change the wind flow direction in time and reduce the scope of the disaster. Therefore, the mine needs to conduct at least one reverse wind test every year to ensure the disaster resistance and mitigation capabilities of the ventilation system.
[0003] Existing casement dampers mostly use structures such as one-way hinges, one-way baffles and single-sided wide sealing strips, which can ensure the damper isolation and opening requirements under normal wind direction. However, since the baffle and hinge are located on one side, they cannot meet the damper's sealing and opening requirements for reverse wind under reverse wind conditions.
[0004] To this end, the present application designs a damper that can meet both positive wind conditions and reverse wind conditions to solve the above problems. Utility Model Content
[0005] In order to make up for the deficiencies in the prior art, the utility model provides a swing air door suitable for reverse wind conditions in mine tunnels.
[0006] A swing damper suitable for reverse wind conditions in mine tunnels comprises a door frame and a door leaf, wherein the door leaf is rotatably connected to the door frame, a baffle is detachably installed on one side of the door leaf, the baffle abuts against the door frame, and a tension spring is detachably hung between the door leaf and the door frame.
[0007] Furthermore, in order to better implement the present invention, handles are connected to the front and back sides of the door leaf.
[0008] Furthermore, in order to better implement the present invention, the door leaf is bonded with an extruded sealing strip around its periphery by double-sided adhesive.
[0009] Furthermore, in order to better implement the present invention, the baffle is detachably connected to the upper and lower corners of the front side of the door leaf or to the upper and lower corners of the back side of the door leaf.
[0010] Furthermore, in order to better realize the utility model, tension spring fixing bolts are installed on the front and back sides of the door leaf, and tension spring fixing bolts are installed on the front and back sides of the vertical part of the door frame, and the tension spring is hung on the tension spring fixing bolts on the front or back side.
[0011] The beneficial effects of the utility model are:
[0012] The damper of the utility model can be opened and closed to both sides, which can meet the requirements of forward opening and closing in general situations, and can also meet the requirements of reverse opening and closing in anti-wind tests, exercises and anti-wind disaster reduction by quickly changing the positions of the baffle and the tension spring. It has a simple structure, convenient reversing and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the door shaft part of the utility model;
[0014] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0015] Figure 3 It is a top view schematic diagram of the utility model in normal wind direction;
[0016] Figure 4 It is a top view schematic diagram of the utility model in reverse wind direction.
[0017] In the figure,
[0018] 1. Axle seat, 2. Door frame, 3. Door axis, 4. Door leaf, 5. Baffle, 6. Handle, 7. Tension spring fixing bolt, 8. Tension spring, 9. Extruded sealing strip. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0021] Figure 1-Figure 4This is a specific embodiment of the utility model, which is a flat-opening damper suitable for reverse wind conditions in mine tunnels. The door leaf 4 is hinged on the door frame 2 through the door shaft 3 and the shaft seat 1. The shaft seat 1 is welded and fixed to the door frame 2, and the door shaft 3 is welded and fixed to the door leaf 4. The baffle 5 is a detachable structure and is fixed to the upper and lower sides of the door leaf 4 by bolts. The handle 6 is fixed to the door leaf 4 by bolts. One end of the tension spring 8 is hung on the tension spring fixing bolt 7 on the door leaf 4, and the other end is hung on the tension spring fixing bolt 7 of the door frame 2. The extruded sealing strip 9 is pasted around the door leaf 4 by double-sided adhesive. The baffle 5 is fixed to the upper and lower corners of the door leaf 4 by two bolts and nuts. When the wind is reversed, it can be removed and fixed to the other side, so that the damper will not be pushed open by wind pressure after closing under reverse wind conditions. The tension spring fixing bolt 7 for hanging the tension spring 8 has reserved hanging points on both sides of the door leaf 4 to meet the requirements of positive and reverse door opening ventilation and closed door sealing. The door gap adopts an extruded sealing strip 9. Compared with the wide sealing strip installed on one side, the extruded sealing strip does not affect the opening and closing of the door leaf, and can meet the sealing effect of opening and closing the door on both sides. The handle 6 is installed on both sides of the door leaf to meet the requirements of pedestrians on both sides to open the damper.
[0022] The specific operation of this example is as follows:
[0023] When the wind direction is normal, the air door Figure 3 Direction opening and closing, at this time, the baffle 5 is located on the windward side of the damper, and the tension spring 8 is installed on the leeward side of the damper. At this time, after the damper is closed, due to the action of the tension spring 8 and the wind pressure, the baffle 5 will be pressed tightly against the door frame 2, and cooperate with the extruded sealing strip 9 to achieve a sealing effect. Under reverse wind conditions, loosen the fixing bolts of the baffle 5, install the baffle 5 on the other side of the door leaf, and remove the tension spring 8 and hang it on the other side of the damper. At this time, due to the tension of the tension spring and the wind pressure, the baffle 5 can still be pressed tightly against the door frame 2. Since the extruded sealing strip is symmetrical on both sides, it will not hinder the damper from closing, and can still meet the reverse opening and closing and sealing requirements of the damper.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A swing damper suitable for use in reverse wind conditions in a mine tunnel, comprising a door frame (2) and a door leaf (4), characterized in that: The door leaf (4) is rotatably connected to the door frame (2); a baffle (5) is detachably mounted on one side of the door leaf (4); the baffle (5) abuts against the door frame (2); and a tension spring (8) is detachably hung between the door leaf (4) and the door frame (2).
2. The swing damper suitable for reverse wind conditions in mine tunnels according to claim 1 is characterized in that: The front and back sides of the door leaf (4) are connected with handles (6).
3. The swing damper suitable for reverse wind conditions in mine tunnels according to claim 1 is characterized in that: The door leaf (4) is bonded with an extruded sealing strip (9) around its periphery by means of double-sided adhesive.
4. The swing damper suitable for reverse wind conditions in mine tunnels according to claim 1 is characterized in that: The baffle (5) is detachably connected to the upper and lower corners of the front side of the door leaf (4) or to the upper and lower corners of the back side of the door leaf (4).
5. The swing damper suitable for reverse wind conditions in mine tunnels according to claim 1 is characterized in that: Tension spring fixing bolts (7) are installed on the front and back sides of the door leaf (4), tension spring fixing bolts (7) are installed on the front and back sides of the upright part of the door frame (2), and the tension spring (8) is hooked to the tension spring fixing bolts (7) on the front or back sides.