Filtering device for coal mine ventilation pipe opening

Abstract

The utility model discloses a filtering device for a coal mine ventilation pipe opening, and mainly relates to the field of coal mine ventilation. Comprising a supporting device and a filtering device arranged in the supporting device, the supporting device comprises a pipeline and a conical supporting part, one end of the pipeline is connected with a ventilation pipe opening, the other end of the pipeline is provided with the conical supporting part, and the filtering device makes contact with the conical supporting part to achieve the filtering effect. The dust removal device has the beneficial effects that dust in air is filtered through the plurality of circular filter screens, and the sizes of the filter holes in the plurality of circular filter screens are different, so that the plurality of circular filter screens can filter the dust in the air step by step. According to the device, the conical supporting part is arranged, and the conical filter screen matched with the conical supporting part is arranged, so that dust is filtered step by step.

Description

Technical Field

[0001] The utility model relates to the field of coal mine ventilation, and particularly relates to a filtering device for a coal mine ventilation pipe orifice. Background Art

[0002] Coal mines are divided into underground coal mines and surface coal mines. Since underground coal mines are usually mined underground, the air circulation is poor, and harmful gases, dust, etc. will be generated and mixed into the air during the mining process, thus posing a hazard to the workers. Therefore, it is necessary to ventilate the underground coal mines. During the coal mine ventilation process, since the air is transmitted through the ventilation pipeline, dust, etc. will adhere to the inner wall of the ventilation pipeline during the transmission process. The long-term accumulation makes the dust overflow when the pipeline is disassembled, which affects the health of the workers. Moreover, the dust accumulation in the pipeline will also cause the dust to be discharged from the outlet of the ventilation pipe, thus polluting the environment and subsequent air purification, etc. Therefore, how to filter the dust in the air and reduce the dust in the pipeline is a problem to be solved.

[0003] The roadways of underground coal mines are intricate. In some cases, in order to ensure the air quality, it is necessary to cut off the air in some roadways so that the air can enter the required roadways. However, for the roadways, ventilation treatment is also required for a period of time. Therefore, how to control whether the roadways are well ventilated is a problem to be solved. During the long-term air filtration process, due to the accumulation of dust, how to facilitate the cleaning of the dust is a problem to be solved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a filtering device for a coal mine ventilation pipe orifice. This device filters the dust in the air through multiple circular filter meshes, and the sizes of the filter holes on the multiple circular filter meshes are different, so that the multiple circular filter meshes gradually filter the dust in the air. This device is provided with a conical support part and a conical filter mesh adapted to the conical support part, so that the dust is gradually filtered. The setting of the conical support part of this device makes the dust move downward along the conical part after being squeezed, that is, it accumulates at the bottom for easy cleaning, etc. This device is also provided with a cover plate, so that when it is installed in a roadway where ventilation is not required, the flow direction of the wind can be effectively controlled, etc.

[0005] In order to achieve the above object, the utility model is realized through the following technical solutions:

[0006] A filtering device for a coal mine ventilation pipe orifice includes a support device and a filtering device arranged inside the support device. The support device includes a pipe and a conical support part. One end of the pipe is connected to the ventilation pipe orifice, and the other end of the pipe is provided with a conical support part. The filtering device is in contact with the conical support part to play a filtering role. One end of the conical support part of the support device is connected to the inner wall of the pipe through a connecting column, so that the conical support part can provide a stable support for the filtering device.

[0007] The filtering device includes a conical filter net and a circular filter net. The circular filter net is connected to the inner wall of the conical filter net. Multiple circular filter nets are arranged inside the conical filter net, and the multiple circular filter nets perform step-by-step filtering on the dust in the coal mine. The conical filter net is in contact with the conical support part inside the pipe, and a circular filter net is arranged inside the conical filter net, so that the circular filter net is connected to the inner wall of the conical filter net. The circular filter net is attached to a wire frame. That is, multiple wire frames are connected to the inner wall of the conical filter net, and circular filter nets are arranged on the wire frames. Moreover, the filtering degrees of the multiple circular filter nets are different, that is, the sizes of the dust allowed to pass through are different. When air passes through the multiple circular filter nets, the multiple circular filter nets can all filter the dust in the air to achieve the effect of step-by-step filtering. A connecting piece is arranged outside the conical filter net, and the connecting piece is detachably connected to the end face of the pipe. The connecting piece is detachably connected to the end face of the pipe. When dust is squeezed on the filter net, the filtering device can be disassembled and replaced at this time.

[0008] It further includes a cover plate. The cover plate is connected to the end face of the pipe through a connecting piece, and the cover plate plays a role in blocking the orifice of the pipe. The cover plate is connected to the end face of the pipe through a connecting piece, and the cover plate plays a role in blocking the orifice of the pipe. When ventilation treatment is not required in this roadway, the cover plate can be installed to play a blocking role and prevent unnecessary loss of air.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] This device filters the dust in the air through multiple circular filter nets, and the sizes of the filter holes on the multiple circular filter nets are different, so that the multiple circular filter nets gradually filter the dust in the air. This device is provided with a conical support part and a conical filter net adapted to the conical support part, so that the dust is gradually filtered. The setting of the conical support part of this device enables the dust to move downward along the conical part after being squeezed, that is, it accumulates at the bottom for easy cleaning, etc. This device is also provided with a cover plate, so that it can be installed in a roadway where ventilation is not required, and can effectively control the air flow direction, etc. Description of the Drawings

[0011] Appendix Figure 1It is a schematic diagram of a filtering device for a coal mine ventilation pipe orifice of the present utility model.

[0012] Appendix Figure 2 It is a schematic diagram of a filtering device for a coal mine ventilation pipe orifice in the present utility model.

[0013] Appendix Figure 3 It is a cross-sectional view of a supporting device of a filtering device for a coal mine ventilation pipe orifice in the present utility model.

[0014] Appendix Figure 4 It is a schematic diagram of a filtering device of a filtering device for a coal mine ventilation pipe orifice in the present utility model.

[0015] Appendix Figure 5 It is a cross-sectional view of a filtering device of a filtering device for a coal mine ventilation pipe orifice in the present utility model.

[0016] Reference numerals shown in the drawings:

[0017] 1. Supporting device; 2. Filtering device; 3. Pipe; 4. Conical supporting part; 5. Conical filter net; 6. Circular filter net; 7. Connecting piece; 8. Cover plate. Specific embodiments

[0018] The following further elaborates the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.

[0019] The present utility model relates to a filtering device for a coal mine ventilation pipe orifice. The main structure includes a supporting device (1), a filtering device (2), and a cover plate (8). The supporting device (1) provides a supporting and fixing function for the filtering device (2), the cover plate (8), etc., and the supporting device (1) is also connected to the ventilation pipe orifice, so that when the ventilation pipe orifice inhales the gas in the coal mine, it passes through the filtering device (2) to filter dust, etc., reducing the dust accumulation in the pipe (3). The supporting device (1) is detachably connected to the ventilation pipe orifice, so that this device can be installed at the required position when needed, and can be replaced if damaged after long-term use.

[0020] The support device (1) includes a pipe (3) and a conical support part (4). One end of the pipe (3) is connected to the ventilation pipe opening. That is, when the coal mine is ventilated, there are an air inlet and an air return opening at the ventilation pipe opening, so that the air pressure in the coal mine can be kept balanced, and the settings of the air inlet and the air return opening can also exchange the gas in the roadway. The support device (1) is arranged at one end of the air return opening, so that when the air return opening sucks the air in the roadway, the dust in it is filtered. The other end of the pipe (3) is provided with a conical support part (4). The conical support part (4) not only supports the filtering device (2), but also makes the air pressure difference at both ends of the conical section different, that is, the gas flow rate is different. Therefore, when the air flows through here, it is blocked by the filtering device (2) to achieve filtration and so on. When the air passes through the filtering device (2), since the air passing through the filtering device (2) instantaneously is the same, when the area of the filtering device (2) gradually becomes smaller, at this time, the amount of air passing through the filtering device (2) instantaneously is large, and because the area of the filtering device (2) decreases, at this time, relative to the external air, the amount of dust passing through the air instantaneously increases, making it convenient for the filtering device (2) to filter and so on.

[0021] One end of the conical support part (4) of the support device (1) is connected to the inner wall of the pipe (3) through a connecting column, so that the conical support part (4) can provide a stable support for the filtering device (2). The other end of the conical support part (4) is directly connected to the inside of the pipe (3), that is, the conical support part (4) is fixedly connected or integrally arranged with the inner wall of the pipe (3).

[0022] The filtering device (2) includes a conical filter net (5) and a circular filter net (6). The conical filter net (5) is in contact with the conical support part (4) in the pipe (3), and a circular filter net (6) is arranged inside the conical filter net (5), so that the circular filter net (6) is connected to the inner wall of the conical filter net (5). The circular filter net (6) is attached to the wire frame. That is, a plurality of wire frames are connected to the inner wall of the conical filter net (5), and the circular filter net (6) is arranged on the wire frame. And the filtering degrees of the plurality of circular filter nets (6) are different, that is, the sizes of the dust allowed to pass through are different. So that when the air passes through the plurality of circular filter nets (6), the plurality of circular filter nets (6) can all filter the dust in the air to achieve the effect of step-by-step filtration. However, when too much dust accumulates, it will accumulate at the circular filter net (6), that is, it will accumulate on the surface where the circular filter net (6) contacts the conical support part (4). Since the conical support part (4) is inclined, the dust will accumulate at the bottom and so on. In order to facilitate the replacement of the filtering device (2) after long-term use, a connector (7) is provided at one end of the conical filter net (5), and the connector (7) is detachably connected to the end face of the pipe (3). When dust is squeezed on the filter net, the filtering device (2) can be disassembled and replaced at this time.

[0023] The cover plate (8) is connected to the end face of the pipeline (3) through the connecting piece (7), and the cover plate (8) plays a sealing role for the pipe orifice of the pipeline (3). When ventilation treatment is not required in this roadway, the cover plate (8) can be installed to play a sealing role and prevent unnecessary air loss.

[0024] Detailed description of the usage method:

[0025] Install this device at the pipe orifice of the air return port so that this device filters the dust in the air in the coal mine. When the air passes through the filtering device (2), the dust in the air is gradually filtered. And the filtering device (2) is detachably connected to the pipeline (3). After long-term use, only the filtering device (2) needs to be replaced. When ventilation is no longer required here, only the cover plate (8) needs to be installed.

[0026] In summary, this device filters the dust in the air through multiple circular filter meshes (6), and the sizes of the filter holes on the multiple circular filter meshes (6) are different, so that the multiple circular filter meshes (6) gradually filter the dust in the air. This device is provided with a conical support part (4) and a conical filter mesh (5) adapted to the conical support part (4), so that the dust is gradually filtered. The setting of the conical support part (4) of this device causes the dust to move downward along the conical part after being squeezed, that is, it accumulates at the bottom for easy cleaning, etc. This device is also provided with a cover plate (8), so that it can be installed in a roadway where ventilation is not required, and can effectively control the air flow direction, etc.

Claims

1. A filtering device for a coal mine ventilation pipe orifice, characterized in that: It includes a support device (1) and a filtering device (2) arranged inside the support device (1). The support device (1) includes a pipe (3) and a conical support part (4). One end of the pipe (3) is connected to a ventilation pipe opening, and the other end of the pipe (3) is provided with a conical support part (4). The filtering device (2) is in contact with the conical support part (4) to play a filtering role.

2. The filtering device for a coal mine ventilation pipe orifice according to claim 1, wherein: The filtering device (2) includes a conical filter net (5) and a circular filter net (6). The circular filter net (6) is connected to the inner wall of the conical filter net (5).

3. The filtering device for a coal mine ventilation pipe orifice according to claim 2, characterized in that: A plurality of circular filter nets (6) are arranged inside the conical filter net (5), and the plurality of circular filter nets (6) perform step filtering on the dust in the coal mine.

4. The filtering device for a coal mine ventilation pipe orifice according to claim 3, characterized in that: A connector (7) is arranged outside the conical filter net (5), and the connector (7) is detachably connected to the end face of the pipe (3).

5. The filtering device for a coal mine ventilation pipe orifice according to claim 4, characterized in that: It further includes a cover plate (8). The cover plate (8) is connected to the end face of the pipe (3) through the connector (7), and the cover plate (8) plays a role in blocking the pipe orifice of the pipe (3).

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