Mine ventilation structure

Abstract

A mine ventilation structure comprises a ventilation pipe and a U-shaped pipe on one side of the ventilation pipe, the two ends of the U-shaped pipe are communicated with the ventilation pipe, a filter screen is arranged at the position, between the two ends of the U-shaped pipe, in the ventilation pipe, wind shields are rotationally arranged at openings in the two ends of the U-shaped pipe, and the wind shields are arranged to be capable of completing sealing work of the U-shaped pipe or the ventilation pipe through rotation. An ash falling opening is further formed in the side, close to the air inlet of the ventilation pipe, of the filter screen on the lower side of the ventilation pipe, and a sealing plate capable of completing opening / closing work of the ash falling opening through rotation is arranged in the ash falling opening. The dust removal device is simple in structure, dust removal work is carried out on the filter screen through external wind power, so that no part loss exists, no precise part like a telescopic rod is used in the whole process, the dust removal effect and efficiency are high, meanwhile, dust removal operation does not need to be driven by electric power, the process does not need to be powered on, and the dust removal device is convenient to use. The device is more suitable for severe environments such as mines, and the fault rate is very low.

Description

Technical Field

[0001] The utility model relates to the technical field of mine ventilation, in particular to a mine ventilation structure. Background Art

[0002] Mine ventilation refers to the input of fresh air into the mine to provide oxygen for the workers in the mine, increase the oxygen concentration in the mine, and dilute the toxic and harmful gases in the mine. Existing mine ventilation pipes are basically designed with filter devices to filter impurities in the air. After the filter has been working for a period of time, dust and other impurities mixed in the wind will slowly block the mesh of the filter. Therefore, it is also necessary to design a cleaning device for the filter in the pipeline.

[0003] For example, a safety ventilation device for coal mines with application number CN202322065180.9 is designed with a dust cleaning device for the filter screen in the pipeline. The dust cleaning device is an electric push rod arranged on the upper side of the ventilation pipe, and a brush plate is arranged on the lower end of the electric push rod through the upper side wall of the ventilation pipe. The brush plate is driven by the electric push rod to reciprocate up and down along the plate surface on one side of the air inlet of the filter plate to brush off the dust blocked on the filter plate. However, since the brush plate moves in contact with the plate surface on the air inlet side of the filter plate, it is necessary to brush it repeatedly for many times to remove the dust in the mesh, which causes great loss to the brush plate and the electric push rod. Moreover, since there is no obstruction at the air inlet end of the ventilation pipe and the air is continuously entering the ventilation pipe, during the dust cleaning process, the dust in the wind will stick to the brush plate and the telescopic rod of the electric push rod. The electric push rod is a precision part. This method greatly affects the normal use of the electric push rod, and thus affects the effect and efficiency of the dust cleaning. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a mine ventilation structure.

[0005] The technical solution of this utility model is as follows:

[0006] A mine ventilation structure comprises a ventilation pipe and a U-shaped pipe on one side thereof, wherein the two ends of the U-shaped pipe are connected to the ventilation pipe, and a filter screen is provided in the ventilation pipe between the two ends of the U-shaped pipe, and wind shields are rotatably provided at the openings at both ends of the U-shaped pipe, and the wind shields are configured to complete the closing of the U-shaped pipe or the ventilation pipe by rotation, and an ash dropping opening is also provided on the lower side of the ventilation pipe on the side of the filter screen close to the air inlet of the ventilation pipe, and a sealing plate is provided in the ash dropping opening that can complete the opening / closing of the ash dropping opening by rotation. With the above structural design, when in use, firstly rotate the two wind shields until they are located inside the ventilation pipe, at which time the ventilation pipe is in a closed state, and at the same time, the openings at both ends of the U-shaped pipe are in an open state, and then rotate the sealing plate until the ash dropping opening is in an open state. At this time, the outside wind enters from the air inlet of the ventilation duct, and enters the ventilation duct between the two wind shields through the U-shaped tube. At this time, the outside wind passes through the filter from the direction opposite to the air inlet direction of the ventilation duct, and the dust blocked in the mesh of the filter is blown out in the opposite direction and falls out of the ventilation duct from the dust outlet, completing the cleaning of the filter. The filter is cleaned by the outside wind force, so there is no loss to each component. During cleaning, the outside wind can only pass through the filter from the direction opposite to the air inlet direction of the ventilation duct, and the dust is prevented from attaching to the filter plate during the cleaning process, thereby improving the cleaning efficiency. In addition, no precision parts like telescopic rods are used in the whole process, which makes the cleaning process very smooth, and the cleaning effect and efficiency are very high.

[0007] As a further implementation:

[0008] This ventilation structure also includes a dust collecting pipe which is vertically arranged at the lower side of the ash dropping port and the upper end of which is connected to the ash dropping port. Through the arrangement of the dust collecting pipe, when the filter plate is cleaned, the dust detached from the filter plate can quickly enter the dust collecting pipe downward along with the cleaning wind, and finally fall out from the lower end of the dust collecting pipe.

[0009] A dust bag is also provided at the lower end of the dust collecting pipe to collect and process the dust.

[0010] To improve work efficiency, as a further implementation method:

[0011] The U-shaped tube includes a connecting tube section and an air inlet tube section and an air outlet tube section connected to both ends thereof. The openings of the air inlet tube section and the air outlet tube section at one end away from the connecting tube section are inclined toward the air inlet direction of the ventilation duct. When the U-shaped tube is arranged during dust cleaning work, it can accelerate the outside wind to enter the U-shaped tube. At the same time, when the outside wind approaches the filter net from the U-shaped tube, the wind direction can directly impact the filter net along the inclined direction, which helps to increase the dust cleaning wind force, thereby improving the dust cleaning effect and efficiency.

[0012] The connection positions of the air inlet section and the air outlet section of the U-shaped tube and the connecting section are all in an arc-shaped transition, which can prevent the outside wind from staying inside the U-shaped tube after entering it, accelerate the flow speed of the outside wind inside the U-shaped tube, thereby further increasing the cleaning wind force, and further improving the cleaning effect and efficiency.

[0013] To reduce failure rate and improve efficiency:

[0014] A rotating shaft and an elastic clamping mechanism are respectively provided on both sides of the opening of the U-shaped tube. One side of the windshield is connected to the rotating shaft, and the other side is configured to be clamped in the opening by an elastic clamping mechanism. The elastic clamping mechanism includes two sets of clamping components arranged opposite to each other, and the clamping method is spring steel ball locking. The rotation and clamping structure of the windshield is simple and easy to use.

[0015] At least one end of the rotating shaft extends out of the U-shaped tube and is connected to a push rod so that the operator can manually push the push rod to drive the rotating shaft to rotate. There is no need for electric power to drive the cleaning operation. The process does not require electrical connection and is more suitable for harsh environments such as mines. It has a lower failure rate, thereby improving the cleaning efficiency.

[0016] Furthermore, a linkage rod is hinged between the ends of the two push rods away from the rotating shaft, and the plane where the linkage rod is located is higher than the plane where the lower end of the dust collecting pipe is located. The operator can achieve synchronous rotation of the two rotating shafts by pushing the linkage rod, which facilitates operation and improves work efficiency.

[0017] The utility model has a simple structure for the mine ventilation structure, and utilizes external wind force to clean the filter screen, so there is no loss to various components, and no precision parts such as telescopic rods are used in the whole process. The cleaning effect and efficiency are very high. At the same time, no electric power is required to drive the cleaning operation, and the process does not require a power connection design. It is more suitable for harsh environments such as mines, and its failure rate is very low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 This is a schematic diagram of the structure of a mine ventilation structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic cross-sectional view of the cross-sectional view taken along the length direction of the ventilation pipe and through the axes of the two rotating shafts;

[0021] Figure 3 for Figure 1 A schematic diagram of the ventilation pipe along the length direction and projected downward after cutting from the middle of the ventilation pipe and the U-shaped pipe;

[0022] Figure 4It is a structural schematic diagram of the rotating shaft, the pushing rod and the linkage rod in the utility model;

[0023] The components represented by the reference numerals in the figure are:

[0024] 1. Ventilation duct; 11. Dust outlet; 2. U-shaped tube; 21. First opening; 22. Second opening; 3. Filter; 4. Wind shield; 5. Rotating shaft; 6. Elastic clamping mechanism; 7. Sealing plate; 8. Dust collecting tube; 9. Push rod; 10. Linking rod. DETAILED DESCRIPTION

[0025] Combination Figure 1 and Figure 2 The present embodiment provides a mine ventilation structure, which includes a ventilation pipe 1 and a U-shaped pipe 2 on one side thereof, wherein the U-shaped pipe 2 includes a connecting pipe section and an air inlet pipe section and an air outlet pipe section connected to the two ends thereof, and is connected to the ventilation pipe 1 through a first opening 21 of the air duct section and a second opening 22 of the air outlet pipe section, and the openings of one end of the air inlet pipe section and the air outlet pipe section away from the connecting pipe section are both inclined toward the air inlet direction of the ventilation pipe 1, and the connection positions of the air inlet pipe section and the air outlet pipe section with the connecting pipe section are all arc-shaped transitions.

[0026] Combination Figure 3 A filter screen 3 is provided in the ventilation pipe 1 between the first opening 21 and the second opening 22 of the U-shaped pipe 2, and a rotating shaft 5 and an elastic clamping mechanism 6 are respectively provided on both sides of the two openings. A wind shield 4 is provided between the rotating shaft 5 and the elastic clamping mechanism 6. One side of the wind shield 4 is fixedly connected to the rotating shaft 5 and is arranged at 90 degrees with the axis of the rotating shaft 5. The upper and lower ends of the other side are provided with arc grooves. The elastic clamping mechanism 6 includes two groups of clamping components arranged opposite to each other up and down, and the clamping method is spring steel ball locking. The wind shield 4 is clamped in the opening at the groove position by the two groups of clamping components. At this time, the U-shaped pipe 2 is in a closed state, and the ventilation pipe 1 is in an open state. In the side wall of the ventilation pipe 1 away from the U-shaped pipe 2, two groups of clamping components are provided up and down corresponding to the positions of the two wind shields 4. By rotating the rotating shaft 5, the wind shield 4 is clamped in the ventilation pipe 1. At this time, the U-shaped pipe 2 is in an open state, and the ventilation pipe 1 is in a closed state.

[0027] A dust outlet 11 is provided on the lower side of the ventilation duct 1, located on the side of the filter screen 3 close to the air inlet of the ventilation duct 1. A dust collecting pipe 8 connected to the dust outlet 11 is vertically provided at the lower side. A sealing plate 7 is provided in the ash outlet 11, and the sealing plate 7 is hinged to the side of the ash outlet 11 close to the air inlet of the ventilation duct 1.

[0028] A dust collecting bag is provided at the lower end of the dust collecting pipe 8, and a telescopic lever is provided on the side close to the air inlet of the ventilation pipe 1. The fixed end and the output end of the telescopic lever are respectively hinged to the inner wall of the dust collecting pipe 8 and the lower side of the sealing plate 7. By driving the telescopic lever, the sealing plate 7 can be pushed to rotate in the dust discharge port 11.

[0029] Combination Figure 4 Both ends of the rotating shaft 5 extend out of the U-shaped tube 2 and are connected to a push rod 9. A linkage rod 10 is hinged between the ends of the two push rods 9 away from the rotating shaft 5, and the plane where the linkage rod 10 is located is higher than the plane where the lower end of the dust collecting tube 8 is located.

[0030] The working process of this embodiment is as follows:

[0031] For ventilation of the mine, firstly, the linkage rod 10 is manually pushed to drive the two push rods 9 to respectively drive the two rotating shafts 5 to rotate, thereby driving the two wind shields 4 to respectively rotate to the first opening 21 and the second opening 22 of the U-shaped tube 2. Figure 3 As shown, at this time, the first opening 21 and the second opening 22 of the U-shaped tube 2 are in a closed state, and the ventilation pipe 1 is in an open state. Then the telescopic rod is driven to extend and push the sealing plate 7 to rotate until the dust outlet 11 is in a closed state. At this time, the outside wind enters from the air inlet of the ventilation pipe 1, and dust and other impurities are filtered out after passing through the filter net 3. The filtered outside wind is sent into the interior of the mine through the ventilation pipe 1.

[0032] For cleaning the filter 3:

[0033] First, by manually pushing the linkage rod 10 in the opposite direction, the two push rods 9 are driven to drive the two rotating shafts 5 to rotate in the opposite direction, thereby driving the two wind shields 4 to rotate in the opposite direction until they are located inside the ventilation pipe 1. At this time, the ventilation pipe 1 is in a closed state, and the first opening 21 and the second opening 22 are in an open state.

[0034] Then, the telescopic rod is driven to retract and the sealing plate 7 is pulled to rotate until the dust discharge port 11 is in the open state. The outside wind enters from the first opening 21 and then comes out from the second opening 22, enters the ventilation pipe 1 between the two wind shields 4, and finally passes through the filter 3 from the direction opposite to the air inlet direction of the ventilation pipe 1. The dust blocked in the mesh of the filter 3 is blown out in the reverse direction and quickly enters the dust collecting pipe 8 downward with the cleaning wind, and finally falls out from the lower end of the dust collecting pipe 8 into the dust collecting bag for collection and treatment, thereby completing the cleaning of the filter 3.

[0035] In the above process, since the air inlet section and the air outlet section are both designed to be inclined along the air inlet direction of the ventilation duct 1, the outside wind can be accelerated to enter from the first opening 21 and exit from the second opening 22, and enter the ventilation duct 1 between the two wind shields 4. When the outside wind approaches the filter screen 3 from the U-shaped tube 2, the wind direction can directly impact the filter screen 3 along the inclined direction, which helps to increase the cleaning wind force, thereby improving the cleaning effect and efficiency. The corners of the U-shaped tube 2 are all designed with an arc-shaped structure, which can prevent the outside wind from staying inside the U-shaped tube 2 after entering it, further accelerating the flow speed of the outside wind inside the U-shaped tube 2, thereby further increasing the cleaning wind force, thereby further improving the cleaning effect and efficiency.

[0036] Of course, there are sometimes some flocs mixed in the outside wind, which may get stuck between adjacent meshes when passing through the filter 3 and are difficult to remove. In this case, the wind shield 4 can be repeatedly rotated to allow the outside wind to repeatedly pass through both sides of the filter 3. During this process, the flocs in the meshes of the filter 3 gradually separate from the filter 3, so that the filter 3 can be cleaned more comprehensively.

[0037] The utility model provides a mine ventilation structure that utilizes external wind force to clean the filter 3, so there is no loss to the components, and no precision parts such as telescopic rods are used in the whole process. The structure is simple, and the cleaning effect and efficiency are very high. At the same time, no electric power is required to drive the cleaning operation, and the process does not require a power connection design. It is more suitable for the harsh environment of a mine, and its failure rate is very low.

Claims

1. A mine ventilation structure, characterized in that: It comprises a ventilation pipe (1) and a U-shaped pipe (2) on one side thereof, wherein both ends of the U-shaped pipe (2) are connected to the ventilation pipe (1), and a filter screen (3) is provided in the ventilation pipe (1) at a position between the two ends of the U-shaped pipe (2); Wind shields (4) are rotatably provided at the openings at both ends of the U-shaped tube (2), and the wind shields (4) are arranged to complete the sealing work of the U-shaped tube (2) or the ventilation tube (1) by rotating; A dust outlet (11) is also provided on the lower side of the ventilation pipe (1) and located near the air inlet of the ventilation pipe (1) and a sealing plate (7) is provided in the dust outlet (11) and can open / close the dust outlet (11) by rotation.

2. A mine ventilation structure as claimed in claim 1, characterized in that: It also comprises a dust collecting pipe (8) which is vertically arranged at the lower side of the ash dropping opening (11) and the upper end of which is connected to the ash dropping opening (11).

3. A mine ventilation structure as claimed in claim 2, characterized in that: A dust collecting bag is also provided at the lower end of the dust collecting pipe (8).

4. A mine ventilation structure as claimed in claim 1, characterized in that: The U-shaped tube (2) comprises a connecting tube section and an air inlet tube section and an air outlet tube section connected at both ends thereof, wherein the openings of the air inlet tube section and the air outlet tube section at one end away from the connecting tube section are inclined towards the air inlet direction of the ventilation tube (1).

5. A mine ventilation structure as claimed in claim 4, characterized in that: The connection positions of the air inlet pipe section, the air outlet pipe section and the connecting pipe section all form an arc-shaped transition.

6. A mine ventilation structure as claimed in claim 1, characterized in that: A rotating shaft (5) and an elastic clamping mechanism (6) are respectively provided on both sides of the opening of the U-shaped tube (2); one side of the windshield plate (4) is connected to the rotating shaft (5), and the other side is configured to be clamped in the opening by the elastic clamping mechanism (6).

7. A mine ventilation structure as claimed in claim 6, characterized in that: At least one end of the rotating shaft (5) extends out of the U-shaped tube (2) and is connected to a pushing rod (9).

8. A mine ventilation structure as claimed in claim 7, characterized in that: A linkage rod (10) is hingedly connected between the ends of the two push rods (9) away from the rotating shaft (5).

9. A mine ventilation structure as claimed in claim 8, characterized in that: The plane where the linkage rod (10) is located is higher than the plane where the lower end of the dust collecting pipe (8) is located.

10. A mine ventilation structure according to any one of claims 6 to 9, characterized in that: The elastic clamping mechanism (6) comprises two sets of clamping components arranged opposite to each other, and the clamping method is spring steel ball locking.

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