A backflow prevention regulating device for air window in mine tunnel

Abstract

The utility model discloses a kind of anti-reflux adjusting devices for mine tunnel inside air window, comprising: with the parallelly arranged pivot of air door, pivot is located in the middle of air window, the both ends of pivot are fixedly connected with air door respectively;Symmetrically set in the both sides of pivot, the first baffle and second baffle that can cover air window, all are hinged with pivot;First baffle and second baffle side away from air window are all provided with fixed lug, fixed lug and first baffle or second baffle are all integrally connected;Adjusting silk, adjusting silk is thin iron wire, its one end is fixedly connected with the fixed lug of first baffle, other end can be bent as hook shape, is hung in the fixed lug of second baffle;Limiting rod, limiting rod is perpendicular with pivot, and there is included angle α between limiting rod and first baffle, one end of limiting rod is fixedly connected with first baffle, other end is suspended. The device can adjust air window ventilation opening size, and can also automatically close and block air window when sudden accident occurs in tunnel, avoid pollution expansion, improve safety.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation safety technology, and in particular to an anti-backflow regulating device for ventilation windows in mine roadways. Background Technology

[0002] In mine ventilation systems, air doors and air windows are core components for controlling airflow. Air doors are ventilation structures installed in underground roadways that can be opened and closed. Their main function is to isolate or guide airflow, preventing it from flowing randomly from one roadway to another, thus avoiding wasted airflow or ventilation turbulence. Air windows are ventilation components with adjustment devices installed on air doors or separately in roadways. Their core function is to precisely regulate airflow. When the opening of an air window is reduced, the local resistance to airflow increases, causing more airflow to flow into branch roadways with lower resistance. By precisely adjusting the opening area of ​​the air window, the amount of airflow through that roadway can be controlled.

[0003] In existing technologies, bracket-type baffles or adjustable louvers are typically used as ventilation window opening adjustment devices to adjust the size of the ventilation openings. However, when a sudden accident such as a gas explosion or coal outburst occurs in a roadway, the ventilation window opening adjustment devices in existing technologies cannot close automatically and in a timely manner. Toxic and harmful gases generated in the accident roadway can then seep into adjacent safe roadways, expanding the pollution range and even causing ventilation disruptions throughout the mine. Utility Model Content

[0004] Therefore, it is necessary to provide a backflow prevention and adjustment device for ventilation windows in mine roadways to address the above-mentioned technical problems. This device can adjust the size of the ventilation opening and automatically close and seal the ventilation window in the event of a sudden accident in the roadway, thereby preventing the spread of pollution and improving safety.

[0005] This utility model provides an anti-backflow regulating device for ventilation windows in mine roadways, comprising: A rotating shaft is set parallel to the damper, located in the middle of the air window, with both ends of the rotating shaft fixedly connected to the damper; The first and second baffles are symmetrically arranged on both sides of the rotating shaft and can cover the windshield. Both the first and second baffles are hinged to the rotating shaft. Both the first baffle and the second baffle are provided with fixing ears on the side away from the wind window, and the fixing ears are integrally connected to the first baffle or the second baffle. The adjusting wire used to adjust the opening size of the windshield is a thin iron wire. One end of the wire is fixedly connected to the fixing lug of the first baffle, and the other end can be bent into a hook shape and hung on the fixing lug of the second baffle. The limiting rod is perpendicular to the rotating shaft and has an angle α with the first baffle. One end of the limiting rod is fixedly connected to the first baffle, and the other end is suspended in the air.

[0006] In one embodiment, 15°≤α≤75°.

[0007] In one embodiment, the limiting rod includes a support rod and a lead screw, one end of the support rod is fixedly connected to the first baffle, and the other end is provided with an internal threaded hole; The lead screw is located at the end of the limit rod that is suspended, and is threaded into the internal threaded hole.

[0008] The beneficial effects of this utility model are as follows: This utility model's anti-backflow adjustment device for ventilation windows in mine roadways features two baffles that can rotate relative to each other on a pivot. The window size can be controlled by adjusting the length of the adjusting screw. In the event of a sudden accident in the roadway, the side of the baffle furthest from the ventilation window will be subjected to an impact force. Under this impact, the hook-shaped end of the adjusting screw disengages from the fixing lug, causing the two baffles to separate and adhere to the ventilation window, thus achieving active and timely closure of the ventilation window, preventing backflow, avoiding the spread of pollution, and improving safety. Furthermore, the limiting rod prevents the two baffles from adhering completely, avoiding the situation where the ventilation window cannot be fully covered under the impact force when fully adhered. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the anti-backflow regulating device and the ventilation window for use in mine roadways, provided as an embodiment of the present invention.

[0010] Explanation of reference numerals in the attached drawings: 100, damper; 200, vent; 300, pivot; 400, first baffle; 500, second baffle; 600, fixing lug; 700, adjusting screw; 800, limit rod; 810, support rod; 820, lead screw. Detailed Implementation

[0011] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0012] It should be noted that in the description of this utility model, "upper," "lower," "top," "bottom," and orientation or positional relationship are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] In one embodiment, such as Figure 1 As shown, the anti-backflow regulating device for ventilation windows in mine roadways in this embodiment includes: A rotating shaft 300 is arranged parallel to the damper 100 and is located in the middle of the air window 200. Both ends of the rotating shaft 300 are fixedly connected to the damper 100. The rotating shaft 300 can be fixed to the wall of the damper 100 by a semi-circular hoop or by adhesive bonding.

[0014] A first baffle 400 and a second baffle 500 are symmetrically arranged on both sides of the rotating shaft 300 and can cover the windshield 200. Both the first baffle 400 and the second baffle 500 are hinged to the rotating shaft 300.

[0015] Specifically, the baffle and the vent 200 can be hinged together. The first baffle 400 and the second baffle 500 are the same in shape and size, both larger than half the area of ​​the vent 200. The opening size of the vent 200 can be adjusted during the rotation of the first baffle 400 and the second baffle 500 relative to the pivot 300.

[0016] Both the first baffle 400 and the second baffle 500 are provided with a fixing ear 600 on the side away from the wind window 200. The fixing ear 600 is integrally connected to the first baffle 400 or the second baffle 500.

[0017] The adjusting wire 700 is used to adjust the opening size of the windshield 200. The adjusting wire 700 is a thin iron wire. One end of it is fixedly connected to the fixing ear 600 of the first baffle 400, and the other end can be bent into a hook shape and hung on the fixing ear 600 of the second baffle 500.

[0018] It should be noted that the strength of the adjusting wire 700 selected in this embodiment must be sufficient to hold the two baffles together without separating and the hook without deforming in the absence of a sudden accident. Furthermore, it must be sufficient to deform the hook and detach it from the second baffle 500 when the two baffles are subjected to an impact force.

[0019] The size of the window can be controlled by adjusting the length of the adjusting wire 700. When a sudden accident occurs in the roadway, the side of the baffle away from the ventilation window 200 will be impacted. Under the action of the impact, the hook-shaped end of the adjusting wire 700 will disengage from the fixing ear 600, and the two baffles will separate and fit against the ventilation window 200, so that the ventilation window 200 can be actively and timely closed to prevent backflow, avoid expanding pollution, and improve safety.

[0020] The limiting rod 800 is perpendicular to the rotating shaft 300 and forms an angle α with the first baffle 400. One end of the limiting rod 800 is fixedly connected to the first baffle 400, and the other end is suspended. 15°≤α≤75°.

[0021] Under the action of the limit rod 800, the two baffles cannot be completely fitted together, which ensures that the two baffles are subjected to sufficient impact force to make one end of the adjusting screw 700 hook fall off, so as to completely cover the windshield 200 in time.

[0022] In one embodiment, the limiting rod 800 includes a support rod 810 and a lead screw 820. One end of the support rod 810 is fixedly connected to the first baffle 400, and the other end is provided with an internal threaded hole. The lead screw 820 is located at the suspended end of the limiting rod 800 and is threadedly connected to the internal threaded hole.

[0023] The lead screw 820 rotates relative to the support rod 810, which can adjust the length of the limiting rod 800, thereby enabling the limiting rod 800 to limit the angle between the first baffle 400 and the second baffle 500, that is, to limit the size of the opening of the windshield 200.

[0024] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A backflow prevention and regulating device for ventilation windows in mine roadways, characterized in that, include: A rotating shaft (300) is arranged parallel to the damper (100), the rotating shaft (300) is located in the middle of the air window (200), and the two ends of the rotating shaft (300) are fixedly connected to the damper (100); A first baffle (400) and a second baffle (500) are symmetrically arranged on both sides of the rotating shaft (300) and can cover the windshield (200). Both the first baffle (400) and the second baffle (500) are hinged to the rotating shaft (300). The first baffle (400) and the second baffle (500) are both provided with fixing ears (600) on the side away from the windshield (200), and the fixing ears (600) are integrally connected to the first baffle (400) or the second baffle (500); An adjusting wire (700) for adjusting the opening size of the windshield (200) is a thin iron wire. One end of the wire is fixedly connected to the fixing ear (600) of the first baffle (400), and the other end can be bent into a hook shape and hung on the fixing ear (600) of the second baffle (500). A limiting rod (800) is perpendicular to the rotating shaft (300) and has an angle α with the first baffle (400). One end of the limiting rod (800) is fixedly connected to the first baffle (400), and the other end is suspended.

2. The anti-backflow regulating device for ventilation windows in mine roadways according to claim 1, characterized in that, 15°≤α≤75°。 3. The anti-backflow regulating device for ventilation windows in mine roadways according to claim 2, characterized in that, The limiting rod (800) includes a support rod (810) and a lead screw (820). One end of the support rod (810) is fixedly connected to the first baffle (400), and the other end is provided with an internal threaded hole. The lead screw (820) is located at the suspended end of the limiting rod (800) and is threadedly connected to the internal threaded hole.

Images