Single-leaf mine double-throw damper

Abstract

The utility model discloses a kind of single-hung mine double-open air door, including door frame and door leaf, door leaf is hinged with door frame, door leaf double opening, door leaf front, back is provided with handle, handle upper portion is provided with clamping groove, door frame is provided with through its front, back synchronous shaft, synchronous shaft both ends are fixed with clamping strip, door frame front, back is provided with sealing strip, sealing strip one side is provided with sealing pad, sealing strip is hinged with door frame, clamping strip rotation is placed in the clamping groove of handle, clamping strip overturns limit sealing strip sealing rotation gap. Compared with the prior art, the utility model can effectively improve the blocking effect of air flow and the locking effect of the door leaf, and the bidirectional opening and closing is more convenient.

Description

Technical Field

[0001] This utility model pertains to ventilation doors, specifically a single-leaf double-opening ventilation door for mining. Background Technology

[0002] Air doors, as an important component of underground roadway systems, typically consist of a door leaf and a door frame (i.e., the door frame is fixed inside the mine roadway, while the door leaf is rotatably mounted on the door frame via hinges or pivots). In relatively narrow roadways, single-leaf air doors are generally used to regulate airflow. To prevent airflow short-circuiting when the door is open, it is generally required that two air doors in series be installed at the same location in the roadway, and that the two air doors be interlocked to prevent both doors from opening simultaneously and causing airflow short-circuiting.

[0003] Currently, at least four unidirectional opening ventilation doors (two forward and two reverse) are required in the same roadway location to meet the demand. However, when personnel pass through, at least four ventilation doors must be opened sequentially, which is inconvenient and inefficient. Therefore, patent document CN219910846U discloses a ventilation door that features an unobstructed door frame structure in the rotation direction of the door leaf structure, allowing the door leaf structure to rotate and open in both directions. When the door leaf structure is closed, the door leaf and door frame are magnetically locked, achieving bidirectional opening of the mine ventilation door and reducing the total number of ventilation doors required. However, this solution has some problems: to enable bidirectional opening of the door leaf, a certain rotation gap needs to be reserved between the door leaf and the door frame, but this rotation gap is prone to air leakage, affecting the ventilation door's airflow isolation effect; in addition, the door leaf's locking mainly relies on the magnetic attraction of the magnetic mechanism, which is convenient for opening and closing but is easily affected by external forces, resulting in poor locking reliability. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing single-leaf mine double-opening ventilation doors and to provide a single-leaf ventilation door that can effectively improve the airflow isolation effect and the door leaf locking effect, and is more convenient to open and close in both directions.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a single-leaf mine double-opening air door, including a door frame and a door leaf, the door leaf is hinged to the door frame, the door leaf is double-opening, the front and back of the door leaf are provided with handles, the upper part of the handle is provided with a slot, the door frame is provided with a synchronous shaft passing through the front and back, the synchronous shaft is fixed with a locking strip at both ends, the front and back of the door frame are provided with a sealing strip, one side of the sealing strip is provided with a sealing gasket, the sealing strip is hinged to the door frame, the locking strip rotates and is placed in the slot of the handle, the locking strip flips and limits the sealing strip to seal the rotation gap.

[0006] Optionally, magnets with opposite magnetic properties are embedded at intervals on the opposite surfaces of the door leaf and the door frame.

[0007] Optionally, several return springs are provided between the sealing strip and the door frame.

[0008] Optionally, a counterweight is provided at the lower end of the card strip.

[0009] The usage and principle of this utility model are as follows: The product is installed and fixed in the alley. When the damper needs to be closed, pull the door handle to close the door leaf. Rotate the locking strip on the door frame. The locking strip causes the sealing strip on one side to flip, so that the sealing strip covers the rotation gap between the door frame and the door leaf. The sealing gasket on one side of the sealing strip seals the rotation gap. The locking strip rotates and is placed in the slot of the handle. The locking strips at the front and rear of the door leaf lock the door leaf and maintain the sealing gasket's seal over the rotation gap. When the damper needs to be opened, the locking strip rotates and is removed from the slot of the handle. The door leaf can then be opened. The principle of this invention is to hinge the sealing strip to the door frame and drive it to press tightly through the flipping movement of the locking strip, so that the sealing gasket of the sealing strip can effectively seal the gap between the door frame and the door leaf. Compared with the solution of simply relying on static sealing strips or leaving gaps, the airflow isolation effect is better. Secondly, the mechanical locking strip is more reliable than the magnetic locking strip, is not easily affected by external forces or magnetic fields, and has a stronger locking effect. In addition, the synchronous shaft ensures that the front and rear movements are consistent, so that bidirectional opening and closing can still be convenient.

[0010] Compared with the prior art, the present invention has at least the following beneficial effects: the present invention can effectively improve the airflow isolation effect and the door locking effect, and the two-way opening and closing is more convenient. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the present invention; The components in the attached diagram are labeled as follows: door frame 1, door leaf 2, handle 3, slot 4, synchronous shaft 5, locking strip 6, sealing strip 7, sealing gasket 8, magnet 9, return spring 10, counterweight 11. Detailed Implementation

[0012] The specific embodiments of this utility model are described below, but the embodiments are merely illustrative and not limiting.

[0013] refer to Figure 1In this embodiment, a single-leaf mine double-opening air door includes a door frame 1 and a door leaf 2. The door leaf and the door frame are hinged together by a door hinge. The door frame is unobstructed in the rotation direction of the door leaf, and the door leaf can rotate and open and close in both directions. A handle 3 is fixed at the front and back of the door leaf. The handle is close to the door frame. A slot 4 is provided on the upper part of the handle. The slot opening faces upward. A synchronous shaft 5 is provided on the door frame, which runs through the front and back of the handle. The synchronous shaft is vertically rotatably connected to the door frame through a bearing. A locking strip 6 is vertically fixed at both ends of the synchronous shaft. The locking strip has a semi-circular cross-section. A sealing strip 7 is provided at the front and back of the door frame. The sealing strip covers the entire rotation gap. A sealing gasket 8 is glued to one side of the sealing strip. The sealing gasket is made of rubber. The sealing strip is hinged to the door frame by a hinge. The locking strip rotates and is placed in the slot of the handle. The locking strip flips and limits the sealing strip to seal the rotation gap.

[0014] In this embodiment, magnets 9 with opposite magnetic properties are embedded at intervals on the opposite surfaces of the door leaf and the door frame, which can help the door leaf to initially align and attract when it approaches the closed position, thus complementing the mechanical locking mechanism.

[0015] In this embodiment, several return springs 10 are provided between the sealing strip and the door frame. The spring force of the return springs is appropriate enough to guide the sealing strip without blocking the rotation trajectory. The two ends of the return springs are fixed on the sealing strip and the door frame respectively, which helps the sealing strip to automatically reset after the door is opened, thus improving the convenience of use.

[0016] Optionally, a counterweight 11 is provided at the lower end of the locking strip to provide a gravitational torque, increase the stability of the locking strip in the locked state, and make it less likely to accidentally come off due to slight air pressure fluctuations inside and outside the damper or external force. In addition, it can also make the locking strip in a vertical state when not in use, improving the convenience of use.

[0017] The above description is merely a preferred embodiment of this utility model and is not intended to limit this embodiment in any way. Any person skilled in the art can make many possible variations and modifications to this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model; all such modifications shall still fall within the protection scope of this utility model.

Claims

1. A single-leaf mine double-opening ventilation door, comprising a door frame (1) and a door leaf (2), wherein the door leaf is hinged to the door frame and the door leaf is double-opening, characterized in that: Handles (3) are provided at the front and back of the door leaf. A slot (4) is provided at the top of the handle. A synchronous shaft (5) is provided on the door frame, which runs through the front and back of the handle. A locking strip (6) is fixed at both ends of the synchronous shaft. A sealing strip (7) is provided at the front and back of the door frame. A sealing gasket (8) is provided on one side of the sealing strip. The sealing strip is hinged to the door frame. The locking strip rotates and is placed in the slot of the handle. The locking strip flips and limits the sealing strip to seal the rotation gap.

2. The single-leaf double-opening mine ventilation door according to claim 1, characterized in that: Magnets with opposite magnetic properties are embedded at intervals on the opposite surfaces of the door leaf and the door frame (9).

3. The single-leaf double-opening mine ventilation door according to claim 1, characterized in that: Several return springs (10) are installed between the sealing strip and the door frame.

4. The single-leaf double-opening ventilation door for mining according to claim 1, characterized in that: The lower end of the card bar is equipped with a counterweight (11).

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