Downwardly directed pressure relief window

Abstract

The utility model discloses a lower guide formula air door pressure relief window, including air door door leaf, be equipped with pressure relief window on air door door leaf, one side of air door door leaf is fixed with the air guide shell, and the air guide shell covers and seals pressure relief window, and the air guide shell lower surface is equipped with the air outlet, is equipped with the baffle and the guide column in the air guide shell, and the guide column is fixedly connected with the air guide shell, and the baffle four corners are sleeved on the guide column, and the baffle middle part is fixed with a screw rod nut, and the air guide shell is vertically through with a screw rod, and the screw rod is rotatably connected with the air guide shell, and one end of screw rod is sleeved with screw rod nut, and the other end of screw rod is equipped with hand wheel, and the baffle is equipped with sealing ring between pressure relief window, and sealing ring is fixed on air door door leaf, and the screw rod rotation drives the baffle to make linear reciprocating motion, and the baffle opens and closes pressure relief window. Compared with the prior art, the utility model has higher safety, better sealing and relatively simple and stable operation.

Description

Technical Field

[0001] This utility model pertains to mine ventilation doors, specifically relating to a bottom-guided pressure relief window applied to mine ventilation doors. Background Technology

[0002] Pressure relief windows for mine roadway ventilation doors are air leakage relief devices designed and installed to solve the problem of difficulty in opening ventilation doors. Existing pressure relief windows for ventilation doors have a hinged handle structure. For example, the underground ventilation door with a pressure relief window disclosed in patent document CN205805600U has a structure of "pressure relief window frame located on the ventilation door body and pressure relief window sash hinged to the ventilation door body and covering the pressure relief window frame". When the pressure of the mine roadway ventilation door is relieved, the air pressure will push the pressure relief window sash connected by the hinge towards the operator, which can easily cause injury to the operator. To address this issue, patent document CN218206771U discloses a mine roadway ventilation door pressure relief window. It discloses that the ventilation door pressure relief window can slide left and right using a sliding rail, and the ventilation door pressure relief window is closed by two symmetrically arranged ventilation door pressure relief windows, thus avoiding the harm to the operator caused by the opening and closing of the pressure relief window. However, when the pressure relief window is opened, the high-speed airflow will blow directly on the operator, and the substances mixed in the airflow can easily cause harm to the operator. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of existing mine ventilation door pressure relief windows and to provide a bottom-guided ventilation door pressure relief window with higher safety, better sealing and relatively simple and stable operation.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a bottom-guided air damper pressure relief window, including an air damper door leaf, a pressure relief window provided on the air damper door leaf, an air guide shell fixed on one side of the air damper door leaf, the air guide shell covering and sealing the pressure relief window, an air outlet provided below the air guide shell, a wind baffle and a guide post provided inside the air guide shell, the guide post being fixedly connected to the air guide shell, the four corners of the wind baffle being sleeved on the guide post, a screw nut fixed in the middle of the wind baffle, a screw rod vertically penetrating through the air guide shell, the screw rod being rotatably connected to the air guide shell, one end of the screw rod being sleeved with a screw nut, the other end of the screw rod being provided with a hand crank, a sealing ring being provided between the wind baffle and the pressure relief window, the sealing ring being fixed on the air damper door leaf, the rotation of the screw rod driving the wind baffle to make linear reciprocating motion, the wind baffle opening and closing the pressure relief window.

[0005] Optionally, a spring is fitted onto the guide post between the wind deflector and the air guide shell.

[0006] Optionally, a mesh panel covering the pressure relief window is fixed to the other side of the damper door.

[0007] The method of using this utility model is as follows: The air guide shell and the door lock mechanism are located on the low-pressure side of the damper. Regardless of whether the opening direction of the damper is opposite to or the same as the airflow, the hand crank can be turned to open the pressure relief window, reduce the pressure difference on both sides of the damper, reduce wind resistance, and then push to open the damper, making the damper easier or smoother to open.

[0008] The principle of this invention is as follows: An air guide shell directs the airflow from the pressure relief window to an air outlet located at the bottom of the air guide shell. The airflow is then directed to the ground through the air outlet, preventing high-speed airflow from directly hitting the operator. A screw and nut mechanism is used to drive the baffle plate, allowing for precise and stable control. The baffle plate opens and closes the pressure relief window simply by turning a handwheel, making operation relatively simple and stable. The cooperation between the baffle plate and the sealing ring helps reduce air leakage during normal closure, resulting in good sealing.

[0009] Compared with the prior art, the present invention has at least the following advantages: the present invention has higher safety, better sealing, and relatively simple and stable operation. Attached Figure Description

[0010] Figure 1 This is a side sectional view of the present invention. The following components are labeled as follows: 1. Door leaf, 2. Pressure relief window, 3. Air guide shell, 4. Air outlet, 5. Baffle plate, 6. Guide column, 7. Screw nut, 8. Screw, 9. Hand crank, 10. Sealing ring, 11. Spring, 12. Mesh plate. Detailed Implementation

[0011] The specific embodiments of this utility model are described below, but the embodiments are merely illustrative and not limiting.

[0012] refer to Figure 1In this embodiment, the bottom-guided damper pressure relief window includes a damper door leaf 1, on which a small pressure relief window 2 is provided. A guide shell 3 is detachably fixed to one side of the damper door leaf. The guide shell is a square, rigid, thick-walled shell that is installed on the door leaf with screws. The guide shell covers and seals the pressure relief window, so that the pressure relief window is located in the sealed cavity of the guide shell. An air outlet 4 is provided at the bottom of the guide shell. The air outlet is elongated. Inside the guide shell, there is a baffle plate 5 and four guide posts 6. The guide posts are fixedly connected to the guide shell. One end of the guide post is vertically fixed to the inner wall of the guide shell, and the other end contacts the damper door leaf. The four corners of the baffle plate are sleeved on the guide posts. On the column, a screw nut 7 is vertically fixed in the middle of the wind deflector, and a screw 8 is vertically passed through the air guide shell. The screw and the air guide shell are rotatably connected by bearings or threads. The screw does not undergo axial displacement. One end of the screw is sleeved with a screw nut. The screw nut has a certain height so that it can move on the screw of a fixed length. A hand crank 9 is welded to the other end of the screw. A sealing ring 10 is provided between the wind deflector and the pressure relief window. The sealing ring surrounds the pressure relief window. The sealing ring has a certain thickness and a square cross-section. The sealing ring is embedded in the door leaf of the air damper and fixed with glue. The rotation of the screw drives the wind deflector to make linear reciprocating motion, and the wind deflector opens and closes the pressure relief window.

[0013] In this embodiment, a spring 11 is sleeved on the guide post between the wind deflector and the air guide shell, which provides operational buffer and auxiliary sealing for the wind deflector.

[0014] In this embodiment, a mesh plate 12 covering the pressure relief window is fixed on the other side of the damper door to prevent large objects (such as tools, gravel, etc.) from being sucked in or thrown out by the high-speed airflow through the pressure relief window when it is open or in case of an accident, thereby improving safety.

[0015] 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 bottom-guided damper pressure relief window, comprising a damper door leaf (1), wherein a pressure relief window (2) is provided on the damper door leaf, characterized in that: A guide shell (3) is fixed on one side of the damper door. The guide shell covers the sealed pressure relief window. An air outlet (4) is provided below the guide shell. A baffle plate (5) and a guide post (6) are provided inside the guide shell. The guide post is fixedly connected to the guide shell. The four corners of the baffle plate are sleeved on the guide post. A screw nut (7) is fixed in the middle of the baffle plate. A screw rod (8) is vertically passed through the guide shell. The screw rod is rotatably connected to the guide shell. One end of the screw rod is sleeved with the screw nut. A hand crank (9) is provided at the other end of the screw rod. A sealing ring (10) is provided between the baffle plate and the pressure relief window. The sealing ring is fixed on the damper door. The rotation of the screw rod drives the baffle plate to make linear reciprocating motion. The baffle plate opens and closes the pressure relief window.

2. The pressure relief window with a bottom-guided damper according to claim 1, characterized in that: A spring (11) is fitted onto the guide post between the wind deflector and the air guide shell.

3. The pressure relief window with a bottom-guided damper according to claim 1, characterized in that: A mesh panel (12) covering the pressure relief window is fixed on the other side of the damper door.

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