Pressure relief air window of coal face

Abstract

The utility model provides a pressure relief air window of a coal face, and belongs to the technical field of coal mining. Comprising a window frame in a right triangle shape, an air window is rotationally connected to one side wall of the window frame, electric push rods rotationally connected with the side wall of the air window are symmetrically and rotationally connected to the two inner side walls of the window frame, and a dust blocking air grid is arranged on the other side wall of the window frame; a cleaning brush arranged above the dust blocking air grid is arranged between the tops of the sliding blocks. The dust blocking air grid can be used for blocking coal dust flying in the coal face, the sweeping assembly and the motor work to enable the brush strips on the sweeping brush to move on the dust blocking air grid, the coal dust attached to the dust blocking air grid can be swept away, and the swept-away coal dust falls back into the coal face. Coal dust is effectively prevented from drifting to the outside atmosphere during pressure relief and ventilation, the environment is protected, and waste of coal resources can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model provides a coal face pressure relief air window belongs to coal mining technical field. BACKGROUND

[0002] The coal mine air window refers to a device for adjusting the air intake and exhaust in the underground ventilation system of a coal mine. Its main function is to control the flow direction and speed of the air in the underground mine, ensure the air quality and temperature in the underground mine, and prevent the accumulation of harmful gases such as gas, so as to ensure the safety of the coal mine workers. The coal mine air window uses the wind pressure difference and air flow inertia to control the air intake and exhaust by adjusting the opening degree of the air window. When the air pressure difference between the inlet and outlet increases, the air window will automatically open to increase the air intake and exhaust. Conversely, when the air pressure difference between the inlet and outlet decreases, the air window will automatically close to reduce the air intake and exhaust.

[0003] The existing coal face pressure relief air window can basically meet the normal use requirements, but still has some defects. When the pressure relief ventilation is processed, the opened air window will make the coal dust in the coal face also drift into the external atmosphere with the air flow, which is not environmentally friendly and will cause a considerable waste of coal resources. Based on this, the utility model provides a coal face pressure relief air window. UTILITY MODEL CONTENTS

[0004] The technical problem solved by the utility model is that the opened air window will make the coal dust in the coal face also drift into the external atmosphere with the air flow, which is not environmentally friendly and will cause a considerable waste of coal resources.

[0005] In order to solve the technical problem, the utility model provides a technical scheme. A coal face pressure relief air window comprises a window frame in the shape of a right triangle, a side wall of the window frame away from the coal face is rotationally connected with an air window, two inner side walls of the window frame are symmetrically rotationally connected with electric push rods rotationally connected with the side walls of the air window, another side wall of the window frame close to the coal face is provided with a dust blocking air grille, the window frame is provided with a cleaning assembly for cleaning the dust blocking air grille, the cleaning assembly comprises sliding grooves symmetrically arranged on the two side walls of the window frame, the sliding grooves are slidably connected with sliding blocks, and the top portions of the sliding blocks are provided with cleaning brushes arranged above the dust blocking air grille.

[0006] Further, the cleaning assembly further comprises a motor fixedly arranged on the outer side wall of the sliding groove, the output end of the motor penetrates into the sliding groove and is fixedly connected with a screw rod threadedly connected with the sliding block, and the other end of the screw rod is rotationally connected with the other side wall of the sliding groove.

[0007] Further, the two inner side walls of the sliding groove are symmetrically provided with limiting rails matched with the side walls of the sliding blocks.

[0008] Further, the cleaning brush comprises a brush plate, the bottom of the brush plate is provided with a brush strip matched with the top of the dust blocking air baffle, and the two side walls of the brush plate are provided with support rods fixedly connected with the side walls of the sliding blocks.

[0009] Further, the top of the window frame is provided with a pressure sensor, and the top of the window frame is provided with a controller electrically connected with the pressure sensor and the electric push rod.

[0010] Further, a rotating shaft one is arranged between the top of the side wall of the window frame and the air window, and a rotating shaft two is arranged between the end of the electric push rod and the inner side wall of the window frame and the air window.

[0011] Further, the side of the two side walls of the window frame away from the coal mining face is provided with a mounting seat, and the mounting seat is provided with a mounting hole.

[0012] The utility model discloses beneficial effect:

[0013] The dust blocking air baffle can be used for intercepting the coal dust floating in the coal mining face, the motor works to drive the screw rod to rotate, then drives the sliding block to move, then drives the cleaning brush to move, then makes the brush strip on the cleaning brush move on the dust blocking air baffle, and then the coal dust adhered to the dust blocking air baffle can be cleaned, and the cleaned coal dust falls back to the coal mining face, effectively avoids the coal dust from floating to the outside atmosphere along with pressure relief ventilation, is not only environmental protection, but also can avoid the waste of coal resources. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the structure diagram of the utility model one kind for coal mining face pressure relief air window Figure 1 .

[0015] Figure 2 It is the structure diagram of the utility model one kind for coal mining face pressure relief air window Figure 2 .

[0016] Figure 3 It is the structure diagram of the utility model one kind for coal mining face pressure relief air window Figure 3 .

[0017] Figure 4 It is the partial enlarged view of the utility model one kind for coal mining face pressure relief air window.

[0018] 1, window frame;2, air window;3, electric push rod;4, dust blocking air baffle;5, cleaning assembly;6, sliding groove;7, sliding block;8, cleaning brush;9, motor;10, screw rod;11, limit rail;12, brush plate;13, support rod;14, pressure sensor;15, controller;16, rotating shaft one;17, rotating shaft two;18, mounting seat. SPECIFIC IMPLEMENTATION

[0019] The utility model is further illustrated below with reference to the drawings.

[0020] According to the drawings Figure 1 、 2 As shown: the utility model provides a kind of coal face pressure relief air window: including the window frame 1 of right-angled triangle, the side of the two side walls of window frame 1 away from coal face is equipped with mounting seat 18, mounting hole is equipped on mounting seat 18, play to the window frame 1 installation in suitable use position, the side wall of window frame 1 away from coal face is rotatably connected with air window 2, two inner side walls of window frame 1 are rotatably connected with the electric push rod 3 of the side wall rotatably connected of air window 2, rotating shaft one 16 is equipped between the side wall top of window frame 1 and air window 2, rotating shaft two 17 is equipped between the end of electric push rod 3 and the inner side wall of window frame 1, air window 2 can effectively swing open and close, the other side wall of window frame 1 close to coal face is equipped with dust barrier louvre 4, dust barrier louvre 4 can be used to intercept the coal dust that floats in coal face, pressure sensor 14 is equipped in the top of window frame 1, the top of window frame 1 is equipped with controller 15 with pressure sensor 14, electric push rod 3 electric connection, when coal face goaf roof collapses, form high pressure airflow, high pressure airflow passes through dust barrier louvre 4 and enters the inside of window frame 1, pressure sensor 14 detects high pressure airflow and gives signal to controller 15, after receiving the electric signal of pressure sensor 14, controller 15 controls electric push rod 3 to work, opens and closes air window 2, and carries out pressure relief ventilation treatment.

[0021] The control mode of the utility model is automatically controlled by controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art, and the power supply also belongs to the common knowledge in the art, and the utility model is mainly used for protecting mechanical device, so the control mode and circuit connection of the utility model are not explained in detail.

[0022] According to the drawings Figure 3 、 4 As shown: the window frame 1 is equipped with cleaning assembly 5 for cleaning dust barrier louvre 4, and the cleaning assembly 5 includes sliding groove 6 symmetrically arranged on the two side walls of the window frame 1, the sliding groove 6 is slidably connected with sliding block 7, the two inner side walls of the sliding groove 6 are symmetrically provided with limiting rail 11 matched with the side wall of the sliding block 7, to limit the function, the top of the sliding block 7 is provided with cleaning brush 8 placed above the dust barrier louvre 4, and the cleaning assembly 5 further includes motor 9 fixedly arranged on the outer side wall of the sliding groove 6, the output end of the motor 9 penetrates into the sliding groove 6 and is fixedly connected with screw rod 10 threadedly connected with the sliding block 7, and the other end of the screw rod 10 is rotatably connected with the other side wall of the sliding groove 6, and the cleaning brush 8 includes brush plate 12, the bottom of the brush plate 12 is provided with brush bar abutting against the top of the dust barrier louvre 4, the two side walls of the brush plate 12 are provided with support rod 13 fixedly connected with the side wall of the sliding block 7, the motors 9 on both sides are started synchronously, the models of the motors 9 on both sides are same, the motor 9 works to drive the screw rod 10 to rotate, and then drives the sliding block to move, and then drives the cleaning brush 8 to move.

[0023] Principle of the utility model

[0024] When the coal mining face goaf roof collapses, high pressure airflow is formed, the high pressure airflow passes through the dust blocking air grid 4 into the window frame 1, the pressure sensor 14 detects the high pressure airflow and gives a signal to the controller 15, the controller 15 receives the electric signal of the pressure sensor 14 and controls the electric push rod 3 to work, opens and closes the air window 2, and carries out pressure relief ventilation treatment, the dust blocking air grid 4 can be used to intercept the coal dust floating in the coal mining face, through the cleaning assembly 5, the motor 9 drives the screw rod 10 to rotate, and then drives the sliding block to move, and then drives the cleaning brush 8 to move, and then makes the brush strip on the cleaning brush 8 move on the dust blocking air grid 4, and then can clean the coal dust attached to the dust blocking air grid 4, the cleaned coal dust falls back into the coal mining face, effectively avoids the coal dust from floating into the external atmosphere when the pressure relief ventilation, not only environmental protection, but also can avoid the waste of coal resources.

[0025] The above describes the utility model and its implementation mode, which is not limited, and the drawings shown are only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the utility model, without creative design, similar structure modes and examples of the technical scheme should belong to the protection scope of the utility model.

Claims

1. A pressure relief air window for a coal face, comprising a window frame (1) in the shape of a right-angled triangle, characterised in that: The window frame (1) is rotatably connected with a window (2) away from one side wall of a coal mining face, two inner side walls of the window frame (1) are symmetrically rotatably connected with electric push rods (3) rotatably connected with side walls of the window (2), another side wall of the window frame (1) close to the coal mining face is provided with a dust blocking air baffle (4), the window frame (1) is provided with a cleaning assembly (5) for cleaning the dust blocking air baffle (4), the cleaning assembly (5) comprises chute (6) symmetrically arranged on the two side walls of the window frame (1), the chute (6) is slidably connected with a sliding block (7), and the sliding block (7) is provided with a cleaning brush (8) arranged above the dust blocking air baffle (4) between the top portions of the sliding block (7).

2. The pressure relief air window for a coal face as claimed in claim 1 wherein: The cleaning assembly (5) further comprises a motor (9) fixedly arranged on the outer side wall of the chute (6), the output end of the motor (9) penetrates into the chute (6) and is fixedly connected with a screw rod (10) threadedly connected with the sliding block (7), and the other end of the screw rod (10) is rotatably connected with the other side wall of the chute (6).

3. The pressure relief air window for a coal face as claimed in claim 1 wherein: The two inner side walls of the chute (6) are symmetrically provided with limiting rails (11) matched with the side walls of the sliding block (7).

4. The pressure relief air window of a coal mining face according to claim 1, characterized in that: The cleaning brush (8) comprises a brush plate (12), the bottom of the brush plate (12) is provided with a brush bar abutting against the top of the dust blocking air baffle (4), and the two side walls of the brush plate (12) are provided with support rods (13) fixedly connected with the side walls of the sliding block (7).

5. The pressure relief air window of a coal mining face according to claim 1, characterized in that: The inner top of the window frame (1) is provided with a pressure sensor (14), and the top of the window frame (1) is provided with a controller (15) electrically connected with the pressure sensor (14) and the electric push rod (3).

6. The pressure relief air window of a coal mining face according to claim 1, characterized in that: A rotating shaft one (16) is arranged between the side wall top of the window frame (1) and the window (2), and a rotating shaft two (17) is arranged between the end of the electric push rod (3) and the inner side walls of the window frame (1) and the window (2).

7. The pressure relief air window of a coal face according to claim 1, characterized in that: The two side walls of the window frame (1) away from the coal mining face are provided with mounting seats (18), and the mounting seats (18) are provided with mounting holes.

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