Filter screen for ventilating duct of coal mine tunnel

Abstract

The utility model relates to the technical field of coal mine tunnel ventilation, in particular to a filter screen for a coal mine tunnel ventilation pipeline, which comprises a pipeline body, an insertion hole is arranged on the side surface of the pipeline body, a mounting plate is inserted in the insertion hole in a sliding manner, mounting holes are symmetrically arranged on the mounting plate, filter plates are arranged in the two mounting holes, and the filter screen is arranged on the pipeline body. The pipeline body comprises a mounting plate, two fixing blocks are fixedly mounted at the two ends of the mounting plate correspondingly, positioning grooves are formed in the multiple fixing blocks correspondingly, first spring rods are symmetrically and fixedly mounted on the two side faces of the pipeline body correspondingly, and L-shaped positioning rods are rotationally mounted at one ends of the first spring rods. The two filter plates are mounted on the mounting plate, the filter plates can be alternately mounted in the pipeline, when one filter plate is used for a long time, the other filter plate can be replaced, meanwhile, the filter plate which is used for a long time is detached from the mounting plate, and the whole section of the ventilation pipe does not need to be detached; and it is ensured that the ventilation pipeline can continuously exhaust underground air.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine tunnel ventilation, in particular to a filter screen used for a ventilation duct in a coal mine tunnel. Background Art

[0002] Toxic and harmful gases are continuously produced during the production process underground in coal mines, which will affect the health of the workers. Therefore, ventilation ducts need to be installed in the coal mine passages for ventilation. When discharging the turbid air underground, filters are usually installed in the passage pipes to filter out the particulate dust carried in the underground air.

[0003] However, a large amount of dust and impurities remain on the filter screens used for a long time in the current ventilation ducts. When the filter screens are disassembled for cleaning or replacement, the entire ventilation pipe section with the filter screens needs to be disassembled, resulting in the ventilation ducts being unable to continuously discharge underground air. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: when disassembling the filter, the entire ventilation pipe section with the filter needs to be disassembled, resulting in the ventilation duct being unable to continuously discharge underground air. A filter is proposed for the ventilation duct of a coal mine tunnel.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A filter screen for a ventilation duct in a coal mine lane, comprising a duct body, a plug hole is provided on the side of the duct body, a mounting plate is slidably inserted in the plug hole, mounting holes are symmetrically provided on the mounting plate, and filter plates are installed in both mounting holes through positioning components;

[0007] One of the mounting holes is located in the pipe body, and the other mounting hole is located outside the pipe body. Two fixing blocks are fixedly installed at both ends of the mounting plate, and positioning grooves are provided on multiple fixing blocks. First spring rods are symmetrically fixedly installed on both sides of the pipe body. The mounting plate is located between the two first spring rods on the same side. An L-shaped positioning rod is rotatably installed on one end of the first spring rod, and one end of the positioning rod can be inserted into the positioning groove.

[0008] Preferably, a plurality of notches are formed on the inner wall of the mounting hole, and the positioning assembly comprises a plurality of wedge blocks respectively slidably inserted into the plurality of notches, and the plurality of wedge blocks are all fixedly connected to the filter plate.

[0009] Preferably, both ends of the mounting plate are provided with mounting cavities, and two movable holes are provided in the mounting cavity, both of which are connected with the mounting holes, and limit blocks are slidably installed in the two movable holes. A limit groove is provided at one end of the filter plate close to the mounting cavity, and the limit groove is aligned with the limit block. A second spring rod is symmetrically fixedly installed on the limit block, and one end of the second spring rod is fixedly connected to the inner wall of the mounting cavity. The mounting plate is provided with a transmission component for driving the limit block to move in the direction of the limit groove.

[0010] Preferably, a rectangular hole connected to the mounting cavity is opened on the side of the mounting plate, and the transmission assembly includes a top block slidably mounted in the rectangular hole, a third spring rod fixedly mounted on the top block, and a moving component for driving the top block to move in the direction of the limit block, one end of the third spring rod is fixedly connected to the inner wall of the mounting cavity, the longitudinal section of the top block is a right-angled trapezoid, and the inclined surface of the top block is in sliding contact with one end of the limit block.

[0011] Preferably, the moving component comprises a trapezoidal block fixedly mounted on a side surface of the pipe body, with the inclined end of the trapezoidal block facing one end of the top block.

[0012] Preferably, sealing gaskets are fixedly mounted on both side surfaces of the mounting plate, and the sealing gaskets are in sealing contact with the inner wall of the insertion hole.

[0013] In the utility model, the beneficial effects are:

[0014] Through the cooperation of the mounting plate, the fixing block, the first spring rod and the positioning rod, two filter plates are mounted on the mounting plate, and the filter plates can be alternately mounted in the pipeline. When one of the filter plates is used for a long time, the other filter plate can be replaced, and the filter plate used for a long time can be removed from the mounting plate, so that the ventilation pipe does not need to be disassembled as a whole, ensuring that the ventilation pipe can continuously discharge underground air;

[0015] When the filter plate is placed in the ventilation duct, the filter plate can be stably locked in the installation hole through the mutual cooperation of the transmission assembly, the limit block, the limit groove and the second spring rod. When the filter plate is taken out of the ventilation duct, the filter plate is automatically unlocked, which is convenient for disassembly and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a right-side perspective structural diagram of a filter screen for a ventilation duct in a coal mine tunnel proposed by the utility model;

[0017] Figure 2 This is a left-side stereoscopic structural schematic diagram of a filter screen for a ventilation duct in a coal mine tunnel proposed by the utility model;

[0018] Figure 3This is a schematic diagram of a three-dimensional partial cross-sectional structure of a mounting plate and a filter plate in a filter screen for a ventilation duct in a coal mine tunnel proposed by the utility model;

[0019] Figure 4 for Figure 2 A magnified view of the structure at center;

[0020] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.

[0021] In the figure: 1 pipeline body, 2 mounting plate, 3 filter plate, 4 fixing block, 5 first spring rod, 6 positioning rod, 7 wedge block, 8 mounting cavity, 9 limiting block, 10 limiting groove, 11 second spring rod, 12 top block, 13 third spring rod, 14 trapezoidal block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 5 A filter screen for a ventilation duct in a coal mine lane comprises a duct body 1, a plug hole is provided on the side of the duct body 1, a mounting plate 2 is slidably inserted in the plug hole, mounting holes are symmetrically provided on the mounting plate 2, filter plates 3 are installed in both mounting holes through positioning components, a plurality of grooves are provided on the inner wall of the mounting hole, the positioning component comprises a plurality of wedge blocks 7 respectively slidably inserted in the plurality of grooves, and the plurality of wedge blocks 7 are fixedly connected to the filter plate 3;

[0024] The wedge block 7 can be slidably inserted in the groove. When the filter plate 3 is installed in the mounting hole, the multiple wedge blocks 7 on the filter plate 3 are respectively inserted into the multiple grooves in the mounting hole, and the mounting plate 2 can slide in the insertion hole, so that the two filter plates 3 on the mounting plate 2 can be controlled to move, so that one filter plate 3 is located in the ventilation duct and the other is located outside the ventilation duct. When one of the filter plates 3 is used in the ventilation duct for a long time, the filter plate 3 used in the ventilation duct for a long time can be removed by moving the mounting plate 2, and the other filter plate 3 can be moved into the ventilation duct. Then, the filter plate 3 used for a long time can be removed from the mounting plate 2, so that the two filter plates 3 can be used alternately, thereby eliminating the need to dismantle the entire ventilation pipe, thereby ensuring that the ventilation duct can continuously discharge underground air.

[0025] One of the mounting holes is located inside the pipe body 1, and the other mounting hole is located outside the pipe body 1. Two fixing blocks 4 are fixedly installed at both ends of the mounting plate 2, and positioning grooves are provided on the plurality of fixing blocks 4. First spring rods 5 are symmetrically fixedly installed on both sides of the pipe body 1. The mounting plate 2 is located between the two first spring rods 5 on the same side. An L-shaped positioning rod 6 is rotatably installed at one end of the first spring rod 5, and one end of the positioning rod 6 can be inserted into the positioning groove.

[0026] When the mounting plate 2 places one of the filter plates 3 in the ventilation duct, the fixing block 4 installed on the mounting plate 2 contacts the side of the ventilation duct, and then drives the first spring rod 5 to stretch. When the positioning rod 6 is rotated, one end of the positioning rod 6 is aligned with the positioning groove provided on the fixing block 4, and then the first spring rod 5 is released. Under the action of the elastic force of the first spring rod 5, one end of the positioning rod 6 is inserted into the positioning groove, thereby limiting the movement of the mounting plate 2.

[0027] Both ends of the mounting plate 2 are provided with mounting cavities 8, and two movable holes are provided in the mounting cavity 8, both of which are connected to the mounting holes, and limit blocks 9 are slidably installed in the two movable holes. A limit groove 10 is provided at one end of the filter plate 3 close to the mounting cavity 8, and the limit groove 10 is aligned with the limit block 9. A second spring rod 11 is symmetrically fixedly installed on the limit block 9, and one end of the second spring rod 11 is fixedly connected to the inner wall of the mounting cavity 8. A transmission component for driving the limit block 9 to move in the direction of the limit groove 10 is provided on the mounting plate 2, and a limit groove 10 is provided on the side of the mounting plate 2. A rectangular hole connected to the installation cavity 8, the transmission assembly includes a top block 12 slidably installed in the rectangular hole, a third spring rod 13 fixedly installed on the top block 12 and a moving component for driving the top block 12 to move in the direction of the limit block 9, one end of the third spring rod 13 is fixedly connected to the inner wall of the installation cavity 8, the longitudinal section of the top block 12 is a right-angle trapezoid, the inclined surface of the top block 12 is in sliding contact with one end of the limit block 9, and the moving component includes a trapezoidal block 14 fixedly installed on the side of the pipeline body 1, and the inclined surface end of the trapezoidal block 14 faces one end of the top block 12;

[0028] When the filter plate 3 is placed in the mounting hole, the limiting groove 10 opened on the side of the filter plate 3 is just aligned with the limiting block 9, and then the mounting plate 2 is pushed to move the filter plate 3 into the ventilation duct. When the filter plate 3 is about to be completely moved into the ventilation duct, the upper end of the top block 12 will contact the inclined surface end of the trapezoidal block 14. Under the action of the inclined surface of the trapezoidal block 14, the top block 12 will be driven to move vertically downward. The third spring rod 13 is compressed, and the inclined surface end of the top block 12 contacts one end of the limiting block 9. When the top block 12 moves vertically downward, the top block 12 will drive the limiting block 9 to move into the limiting groove 10, until the filter plate 3 is completely moved into the ventilation duct, the limiting block 9 is just inserted into the limiting groove 10, and the filter plate 3 is locked in the mounting hole by the limiting block 9 and the limiting groove 10.

[0029] When disassembly is required, the filter plate 3 is taken out from the ventilation duct. At this time, the top block 12 is separated from the trapezoidal block 14. Under the action of the elastic force of the third spring rod 13, the top block 12 is away from the limit block 9. At the same time, under the action of the elastic force of the second spring rod 11, the limit block 9 is moved out of the limit groove 10, automatically releasing the lock on the filter plate 3, which is convenient for disassembly and use.

[0030] Sealing pads are fixedly installed on both sides of the mounting plate 2, and the sealing pads are in sealing contact with the inner wall of the insertion hole. The sealing pads can increase the sealing between the mounting plate 2 and the ventilation duct to prevent gas from overflowing from the ventilation duct.

[0031] In the utility model, when one of the filter plates 3 is used for a long time in the ventilation duct, the filter plate 3 used for a long time in the ventilation duct can be removed by moving the mounting plate 2, and the other filter plate 3 can be moved into the ventilation duct, and then the filter plate 3 used for a long time can be removed from the mounting plate 2, so that the two filter plates 3 can be used alternately, thereby eliminating the need to disassemble the entire ventilation pipe, thereby ensuring that the ventilation duct can continuously discharge underground air.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter screen for a ventilation duct in a coal mine tunnel, comprising a duct body (1), characterized in that: The side of the pipe body (1) is provided with an insertion hole, a mounting plate (2) is slidably inserted into the insertion hole, mounting holes are symmetrically provided on the mounting plate (2), and filter plates (3) are installed in both mounting holes via positioning components; One of the mounting holes is located inside the pipe body (1), and the other mounting hole is located outside the pipe body (1). Two fixing blocks (4) are fixedly mounted on both ends of the mounting plate (2), and a plurality of the fixing blocks (4) are provided with positioning grooves. First spring rods (5) are symmetrically fixedly mounted on both sides of the pipe body (1). The mounting plate (2) is located between the two first spring rods (5) on the same side. An L-shaped positioning rod (6) is rotatably mounted on one end of the first spring rod (5), and one end of the positioning rod (6) can be inserted into the positioning groove.

2. A filter screen for coal mine tunnel ventilation duct according to claim 1, characterized in that: The inner wall of the mounting hole is provided with a plurality of notches, and the positioning assembly comprises a plurality of wedge blocks (7) respectively slidably inserted into the plurality of notches, and the plurality of wedge blocks (7) are all fixedly connected to the filter plate (3).

3. A filter screen for coal mine tunnel ventilation duct according to claim 1, characterized in that: Both ends of the mounting plate (2) are provided with mounting cavities (8), the mounting cavity (8) is provided with two movable holes both connected to the mounting holes, and limit blocks (9) are slidably installed in the two movable holes. The filter plate (3) is provided with a limit groove (10) at one end close to the mounting cavity (8), the limit groove (10) is aligned with the limit block (9), and a second spring rod (11) is symmetrically fixedly installed on the limit block (9), and one end of the second spring rod (11) is fixedly connected to the inner wall of the mounting cavity (8). The mounting plate (2) is provided with a transmission component for driving the limit block (9) to move in the direction of the limit groove (10).

4. A filter screen for coal mine tunnel ventilation duct according to claim 3, characterized in that: A rectangular hole communicating with the mounting cavity (8) is formed on a side surface of the mounting plate (2); the transmission assembly comprises a top block (12) slidably mounted in the rectangular hole, a third spring rod (13) fixedly mounted on the top block (12), and a moving component for driving the top block (12) to move in the direction of the limit block (9); one end of the third spring rod (13) is fixedly connected to the inner wall of the mounting cavity (8); the longitudinal section of the top block (12) is a right-angled trapezoid; and the inclined surface of the top block (12) is in sliding contact with one end of the limit block (9).

5. A filter screen for coal mine tunnel ventilation duct according to claim 4, characterized in that: The moving component comprises a trapezoidal block (14) fixedly mounted on the side of the pipeline body (1), the inclined end of the trapezoidal block (14) facing one end of the top block (12).

6. A filter screen for coal mine tunnel ventilation duct according to claim 1, characterized in that: Sealing pads are fixedly mounted on both side surfaces of the mounting plate (2), and the sealing pads are in sealing contact with the inner wall of the insertion hole.

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