Ventilation air door structure for coal mine safety production

Abstract

The utility model provides a coal mine safety production ventilation air door structure which comprises a door frame, hinges and air doors, one side of the door frame is movably connected with the two air doors through the hinges, the two air doors are arranged in a split mode, the front face and the back face of each air door are fixedly connected with handles, observation windows are installed on the air doors, and the observation windows are connected with the hinges. The air door can only rotate towards the back of the door frame to be opened. The utility model has the advantages that the two air doors can only be opened and closed towards the back of the door frame in one direction, the rail structure is arranged on the door frame and above the air doors, the sliding block is movably connected to the rail, the door jacking device movably connected with the air doors is arranged at the bottom of the sliding block, and when the door jacking device is movably connected with the air doors, the air doors cannot be opened, so that the door jacking effect is achieved; when one air door is opened, only the other air door can be opened, that is, only one air door can be opened each time, and meanwhile, the sliding block can be locked at the position on the rail through the locking pin, so that a worker can be prevented from opening the two air doors by misoperation, inlet air and return air can be prevented from being mixed, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine production, in particular to a ventilation damper structure for safe production of coal mines. Background Art

[0002] In mine operations, the damper is an important structure in the mine ventilation system. It blocks the wind flow and creates conditions for the on-demand distribution of the mine wind flow. At the same time, it provides convenience for pedestrians and transportation. Its biggest function is to prevent the incoming air and the return air from mixing with each other and prevent the wind flow from short-circuiting. At present, most of the dampers on the market are connected together by steel wires. When the damper on one side is in a fully open state, the steel wire is in a taut state, so that the damper on the other side cannot be opened. However, this method has certain disadvantages. When the damper on one side is opened, the steel wire is still in a relaxed state and cannot effectively pull the damper on the other side, so that the two dampers will be opened at the same time, which will cause the incoming air and the return air to mix, posing a huge safety hazard. Utility Model Content

[0003] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0004] To this end, one purpose of the utility model is to propose a ventilation damper structure for safe production in coal mines to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, an embodiment of the utility model provides a coal mine safety production ventilation damper structure, comprising a door frame, a hinge, and a damper, wherein one side of the door frame is movably connected to two dampers through a hinge, and the two dampers are arranged opposite to each other;

[0006] The front and back sides of the damper are both fixedly connected with handles, an observation window is installed on the damper, and the damper can only be opened by rotating toward the back of the door frame;

[0007] A track is fixedly connected to the back of the door frame near the top edge, and limiting plates are fixedly connected to both ends of the track;

[0008] The track is located above the two dampers;

[0009] A slider is movably connected to the track, a door lifter is fixedly connected to the bottom of the slider, and the door lifter can be movably connected to the surfaces of the two dampers;

[0010] A handle is fixedly connected to the surface of the sliding block, a locking pin is threadedly connected to the sliding block, and an end of the locking pin abuts against the track.

[0011] Preferably, in any of the above schemes, the door frame is made of stainless steel, a door lock is provided on each of the dampers, and the handle is connected to the damper by screws.

[0012] Adopting the above technical solution: This device is a ventilation damper inside a coal mine. Its main body is composed of a door frame and dampers, and there are two dampers in the form of sliding doors.

[0013] Preferably, any of the above solutions is that the observation window is made of tempered glass, and the track is welded to the door frame.

[0014] Preferably, any of the above schemes is that the track is arranged horizontally and the material of the track is aluminum alloy.

[0015] Adopting the above technical solution: the core structure of the device is: door frame, air door, track, limit plate, slide block, door lifter, handle and locking pin.

[0016] After the door lock of the damper is opened, the staff can pull open the single damper by the handle. By opening or closing the damper, the direction of fresh air entering the mine can be controlled, toxic gases can be discharged, gas accumulation can be prevented, and the harm caused by harmful gases such as coal mine gas can be avoided.

[0017] Preferably, any of the above solutions adjusts the position of the slider on the track, and the bottom of the slider is welded to the door lifter.

[0018] The above technical solution is adopted: a new mechanism is designed, which can effectively prevent the two dampers from opening at the same time, ensure that only a single damper is opened at a time, prevent the incoming air and the return air from mixing, and avoid safety hazards. Specifically, the two dampers can only be opened and closed in one direction toward the back of the door frame, and a track structure is installed on the door frame and above the dampers. A slider is movably connected to the track, and a door-lifting device movably connected to the dampers is provided at the bottom of the slider. When the door-lifting device is movably connected to a damper, this damper cannot be opened and plays the role of a door-lifting device. Only the other damper can be opened, that is, only a single damper can be opened at a time. At the same time, the slider can be locked in position on the track with a locking pin, so that the staff can avoid accidentally opening the two dampers, prevent the incoming air and the return air from mixing, and avoid safety hazards.

[0019] Preferably, according to any of the above solutions, a fastening head is fixedly connected to the end of the locking pin.

[0020] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0021] The coal mine safe production ventilation damper structure is designed with a new mechanism through the coordinated arrangement of door frame, damper, track, limit plate, slider, door-lifting device, handle and locking pin, which can effectively prevent the two dampers from opening at the same time, ensure that only one damper is opened at a time, prevent the incoming air and return air from mixing, and avoid safety hazards. Specifically, the two dampers can only be opened and closed in one direction toward the back of the door frame, and a track structure is installed on the door frame and above the damper. A slider is movably connected to the track, and a door-lifting device movably connected to the damper is provided at the bottom of the slider. When the door-lifting device is movably connected to a damper, this damper cannot be opened and acts as a door-lifting device. Only the other damper can be opened, that is, only a single damper can be opened at a time, and at the same time, the slider can be locked in position on the track with a locking pin, so as to prevent the staff from accidentally opening the two dampers, prevent the incoming air and return air from mixing, and avoid safety hazards.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0025] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle;

[0026] Figure 3 It is a structural schematic diagram of the utility model from a third viewing angle;

[0027] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 1-door frame, 2-hinge, 3-damper, 4-handle, 5-observation window, 6-track, 7-limiting plate, 8-slider, 9-door lifter, 10-handle, 11-locking pin. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-4 As shown, the ventilation damper structure for safe production in coal mines comprises a door frame 1, a hinge 2, and a damper 3. One side of the door frame 1 is movably connected to two dampers 3 through the hinge 2, and the two dampers 3 are arranged opposite to each other;

[0032] Handles 4 are fixedly connected to the front and back sides of the damper 3, and an observation window 5 is installed on the damper 3. The damper 3 can only be opened by rotating toward the back of the door frame 1;

[0033] A track 6 is fixedly connected to the back of the door frame 1 near the top edge, and limit plates 7 are fixedly connected to both ends of the track 6;

[0034] The track 6 is located above the two dampers 3;

[0035] A slider 8 is movably connected to the track 6, and a door lifter 9 is fixedly connected to the bottom of the slider 8. The door lifter 9 can be movably connected to the surfaces of the two dampers 3;

[0036] A handle 10 is fixedly connected to the surface of the slider 8 , and a locking pin 11 is threadedly connected to the slider 8 , and an end of the locking pin 11 abuts against the track 6 .

[0037] Embodiment 1: The material of the door frame 1 is stainless steel, a door lock is provided on a single damper 3, and the handle 4 is connected to the damper 3 by screws. This device is a ventilation damper inside a coal mine. Its main body is composed of a door frame 1 and dampers 3, and there are two dampers 3, which are in the form of sliding doors. The material of the observation window 5 is tempered glass, and the track 6 is welded to the door frame 1. The track 6 is arranged horizontally, and the material of the track 6 is aluminum alloy.

[0038] Embodiment 2: The position of the slider 8 on the track 6 is adjusted, and the bottom of the slider 8 is welded to the door lifter 9. The end of the locking pin 11 is fixedly connected with a fastening head. The locking pin 11 can be manually tightened through the fastening head to lock the position of the slider 8.

[0039] The working principle of the utility model is as follows:

[0040] After the door lock of the damper 3 is opened, the staff can pull open the single damper 3 through the handle 4. A track 6 structure is installed on the door frame 1 and above the damper 3. A slider 8 is movably connected to the track 6. A door-lifting device 9 movably connected to the damper 3 is provided at the bottom of the slider 8. When the door-lifting device 9 is movably connected to a damper 3, the damper 3 cannot be opened and plays the role of lifting the door. Only another damper 3 can be opened, that is, only a single damper 3 can be opened at a time;

[0041] When the door is opened next time, the slider 8 needs to be moved in advance to unlock the damper 3, and then the damper 3 is opened;

[0042] By opening or closing the damper 3, the direction of fresh air entering the well can be controlled, toxic gases can be discharged, gas accumulation can be prevented, and the harm caused by harmful gases such as coal mine gas can be avoided.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] The coal mine safe production ventilation damper structure is designed with a new mechanism through the coordinated arrangement of the door frame 1, the damper 3, the track 6, the limit plate 7, the slider 8, the door-lifting device 9, the handle 10, and the locking pin 11. The new mechanism can effectively prevent the two dampers 3 from being opened at the same time, and ensure that only a single damper 3 is opened each time, so as to prevent the intake and return air from mixing and avoid safety hazards. Specifically, the two dampers 3 can only be opened and closed in one direction toward the back of the door frame 1. A track 6 structure is installed on the door frame 1 and above the damper 3. A slider 8 is movably connected to the track 6. A door-lifting device 9 movably connected to the damper 3 is provided at the bottom of the slider 8. When the door-lifting device 9 is movably connected to any damper 3, the damper 3 cannot be opened and plays the role of a door-lifting device. Only the other damper 3 can be opened, that is, only a single damper 3 can be opened each time. At the same time, the slider 8 can be locked in the position on the track 6 with the locking pin 11, so that the staff can avoid mistaken operation to open the two dampers 3, so as to prevent the intake and return air from mixing and avoid safety hazards.

Claims

1. A ventilation damper structure for safe production in coal mines, characterized in that: The door frame (1) comprises a door frame (1), a hinge (2), and a damper (3); one side of the door frame (1) is movably connected to two dampers (3) via the hinge (2); the two dampers (3) are arranged to be opposite to each other; handles (4) are fixedly connected to the front and back surfaces of the dampers (3); an observation window (5) is installed on the dampers (3); and the dampers (3) can only be opened by rotating toward the back of the door frame (1); A track (6) is fixedly connected to the back side of the door frame (1) near the top edge, and limiting plates (7) are fixedly connected to both ends of the track (6); The track (6) is located above the two dampers (3); A slider (8) is movably connected to the track (6), a door lifter (9) is fixedly connected to the bottom of the slider (8), and the door lifter (9) can be movably connected to the surfaces of the two dampers (3); A handle (10) is fixedly connected to the surface of the slider (8), a locking pin (11) is threadedly connected to the slider (8), and the end of the locking pin (11) abuts against the track (6).

2. A coal mine safety production ventilation damper structure as claimed in claim 1, characterized in that: The door frame (1) is made of stainless steel, a door lock is provided on each of the dampers (3), and the handle (4) is connected to the damper (3) by means of screws.

3. A coal mine safety production ventilation damper structure as claimed in claim 2, characterized in that: The observation window (5) is made of tempered glass, and the track (6) is welded to the door frame (1).

4. A coal mine safety production ventilation damper structure as claimed in claim 3, characterized in that: The track (6) is arranged transversely, and the material of the track (6) is aluminum alloy.

5. A coal mine safety production ventilation damper structure as claimed in claim 4, characterized in that: The position of the slider (8) on the track (6) is adjusted, and the bottom of the slider (8) is welded to the door lifter (9).

6. A coal mine safety production ventilation damper structure as claimed in claim 5, characterized in that: The end of the locking pin (11) is fixedly connected with a fastening head.

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