Local fan for mine

Abstract

The utility model provides a local ventilator for a mine, and belongs to the technical field of coal mining. Comprising a ventilator body and further comprises a filtering mechanism, the filtering mechanism comprises an air inlet cover fixed to an air inlet of the ventilator body, the air inlet end of the air inlet cover is square, a filtering plate is fixed to the inner wall of the air inlet end of the air inlet cover, and at least two sets of filtering holes are formed in the side face of the filtering plate. Through the arrangement of the brush rod and the driving piece, when the driving piece drives the cleaning box to move up and down, the inner walls of the filter holes in the filter plate are cleaned by using the bristles on the brush rod, and the effective service time of the filter plate is prolonged in a manner of cleaning the filter holes, so that the time period for dismounting and cleaning the filter plate is prolonged, and the cleaning efficiency is improved. The filter plate cleaning device is simple in structure and convenient to use, frequent dismounting and cleaning are not needed, cleaning convenience of the filter plate is improved through an automatic cleaning mode, meanwhile, frequent climbing for dismounting and mounting of the filter plate is not needed, and therefore safety in the filter plate cleaning working process is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a local ventilation fan for mines. Background Technology

[0002] In coal mining operations, the tunnel ventilation system is crucial for safe production. To ensure underground air quality and enhance air circulation efficiency, local ventilation fans are usually installed inside the tunnel and securely suspended from the top of the tunnel wall to facilitate airflow. At the same time, filters are installed at the air inlet of the local ventilation fan to prevent large foreign objects from entering the fan and interfering with the operation of the fan blades, thus ensuring the stable operation of the local ventilation fan.

[0003] When common mine local ventilation fans are used in roadways, the high dust concentration in the roadways causes the inlet filter screen of the local ventilation fan to easily accumulate a large amount of dust during continuous operation. According to conventional maintenance procedures, the filter screen needs to be disassembled and cleaned every fifteen days. However, due to the high position of the local ventilation fan installed at the top of the roadway, each maintenance requires the use of climbing equipment for disassembly and assembly. From disassembly and cleaning to reinstallation, the entire process is not only frequent, but the repeated climbing work also poses safety hazards, greatly restricting the convenience and safety of filter screen cleaning. Therefore, this application provides a mine local ventilation fan to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a local ventilation fan for mines to address the issue that the process of cleaning the filter screen at the air inlet of the local ventilation fan, from disassembly and cleaning to reinstallation, involves not only high frequency of operations but also repeated climbing work, which poses safety hazards and greatly restricts the convenience and safety of the filter screen cleaning work.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A local ventilation fan for mines includes a fan body and further includes:

[0007] The filtration mechanism includes an air inlet hood fixed to the air inlet of the ventilator body. The air inlet end of the air inlet hood is square, and a filter plate is fixed to the inner wall of the air inlet end of the air inlet hood. At least two sets of filter holes are opened on the side of the filter plate.

[0008] The cleaning mechanism includes a cleaning box slidably connected to the side of the filter plate. Several brush rods are fixed to the inner wall of the cleaning box. A driving component is provided on the opposite side of the cleaning box. The driving component is fixed to the inner wall of the air inlet hood. The driving component is used to drive the cleaning box to move vertically. When the cleaning box moves vertically, the bristles of the brush rods are used to clean the dust adhering to the inner wall of the filter holes.

[0009] Preferably, a guide plate and a filter cloth are fixed to the inner wall of the cleaning box. The filter cloth is fixed to the bottom of the guide plate. A through groove is opened on the side of the cleaning box near the fan. A sealing plate is set on the side of the cleaning box corresponding to the through groove. The guide plate and the filter cloth are located between the brush rod and the sealing plate. Connecting seats are fixed on opposite sides of the cleaning box. The sealing plate is rotatably connected between the two connecting seats. The telescopic end of the drive component is fixedly connected to the bottom of the connecting seat. A servo motor is fixed to the top of the connecting seat. The output end of the servo motor is fixedly connected to the side of the sealing plate.

[0010] Preferably, both the guide plate and the filter cloth are inclined, and the inclination angle and direction of the guide plate and the filter cloth are the same. The height of the guide plate is greater than the height of the filter cloth. The inclined guide plate is used to guide the airflow to flow towards the filter cloth, and the inclined filter cloth is used to guide the dust to accumulate at the bottom of the filter cloth.

[0011] Preferably, a baffle is fixed to the bottom of the inner wall of the cleaning box, and the baffle is located between the brush rod and the filter cloth.

[0012] Preferably, the baffle includes an inclined portion fixed to the bottom of the inner wall of the cleaning box, with the top of the inclined portion inclined toward the filter cloth.

[0013] Preferably, the top of the inclined portion extends in the direction of the filter cloth to form an extension.

[0014] Preferably, a plurality of the brush rods are evenly distributed at intervals within the cleaning box.

[0015] Preferably, the driving component is an electric push rod.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects:

[0017] 1. By using the brush rod and drive mechanism, the cleaning box moves up and down with the drive mechanism, and the bristles on the brush rod clean the inner wall of the filter holes on the filter plate. This cleaning method extends the effective service life of the filter plate, thereby reducing the frequency of disassembly and cleaning. It also improves the convenience of cleaning the filter plate through automatic cleaning, and eliminates the need for frequent climbing to disassemble and reassemble the filter plate, thus improving the safety of the filter plate cleaning process.

[0018] 2. Through the setting of filter cloth and sealing plate, the cleaning box moves to drive the brush rod to clean the inner wall of the filter hole. At the same time, the sealing plate opens, and outside air can pass through the cleaning box. When the airflow flows in the cleaning box, it drives the dust brushed off by the brush rod towards the filter cloth. The filter cloth filters the airflow carrying dust, so that the dust is intercepted at the filter cloth position, preventing the dust brushed off by the brush from adhering to the fan blades inside the ventilation body under the action of the airflow, thus ensuring the stability of the fan blades during rotation. At the same time, the two sets of filter holes on the filter plate are used alternately, and the ventilation body can be cleaned without stopping the filter holes, ensuring the continuity of underground ventilation.

[0019] 3. Due to the setting of the baffle strip, under the influence of the inclined filter cloth, some airflow will form a vortex under the guidance of the inclined filter cloth. At the same time, dust will accumulate at the bottom of the filter cloth under the guidance of the inclined filter cloth. After the vortex acts on the dust accumulation position, the branch airflow in the vortex will carry the dust away. The baffle strip is used to block the drifting dust, so that the dust is concentrated at the bottom of the filter cloth, reducing the trouble of subsequent cleaning. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the air inlet shroud of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the electric push rod of this utility model;

[0024] Figure 4 This is a front sectional view of the guide plate of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the cleaning box of this utility model.

[0026] In the diagram: 1. Fan body; 2. Filter mechanism; 3. Air inlet hood; 4. Filter plate; 5. Filter holes; 6. Cleaning mechanism; 7. Drive component; 8. Cleaning box; 9. Brush rod; 10. Filter cloth; 11. Guide plate; 12. Baffle; 13. Inclined part; 14. Extension part; 15. Sealing plate; 16. Servo motor; 17. Connecting seat.

[0027] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0028] The following is a detailed description of a mine local ventilation fan provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0029] like Figures 1-5 As shown, an embodiment of this utility model provides a local ventilation fan for mines, including a fan body 1. The fan body 1 accelerates airflow in a local area within the roadway, thereby achieving local ventilation within the roadway. Furthermore, the ventilation performance within the roadway is improved through the coordinated operation of multiple fan bodies 1 installed within the roadway. The device also includes:

[0030] The filter mechanism 2 includes an air inlet hood 3 fixed to the air inlet of the fan body 1. The air inlet end of the air inlet hood 3 is square. A filter plate 4 is fixed to the inner wall of the air inlet end of the air inlet hood 3. At least two sets of filter holes 5 are opened on the side of the filter plate 4.

[0031] The cleaning mechanism 6 includes a cleaning box 8 slidably connected to the side of the filter plate 4. Several brush rods 9 are fixed to the inner wall of the cleaning box 8. A driving component 7 is provided on each opposite side of the cleaning box 8. The driving component 7 is fixed to the inner wall of the air inlet hood 3. The driving component 7 is used to drive the cleaning box 8 to move vertically. When the cleaning box 8 moves vertically, the bristles of the brush rods 9 are used to clean the dust attached to the inner wall of the filter holes 5. During the movement of the cleaning box 8 driven by the driving component 7, the bristles on the brush rods 9 can penetrate deep into the inner wall of the filter holes 5 for cleaning, which can effectively remove the dust attached to the filter holes 5, extend the effective service time of the filter plate 4, increase the time cycle of disassembly and cleaning of the filter plate 4, reduce the frequency of disassembly and cleaning, and adopt an automatic cleaning method, eliminating the need for personnel to frequently climb to heights to disassemble and install the filter plate 4, improving the convenience of cleaning the filter plate 4 and the safety of the working process.

[0032] like Figure 4 and Figure 5As shown, in this embodiment, a guide plate 11 and a filter cloth 10 are fixed to the inner wall of the cleaning box 8. The filter cloth 10 is fixed to the bottom of the guide plate 11. A through groove is provided on the side of the cleaning box 8 near the fan. A sealing plate 15 is provided on the side of the cleaning box 8 corresponding to the through groove. The guide plate 11 and the filter cloth 10 are located between the brush rod 9 and the sealing plate 15. Connecting seats 17 are fixed on opposite sides of the cleaning box 8. The sealing plate 15 is rotatably connected between the two connecting seats 17. The telescopic end of the driving component 7 is fixedly connected to the bottom of the connecting seat 17. A servo motor 16 is fixed to the top of the connecting seat 17. The output end of the servo motor 16 is connected to the sealing plate 17. The side of plate 15 is fixedly connected. When the cleaning box 8 drives the brush rod 9 to clean the inner wall of the filter hole 5, the servo motor 16 controls the sealing plate 15 to open. Outside air can pass through the cleaning box 8. The airflow drives the dust brushed off by the brush rod 9 to flow towards the filter cloth 10. The filter cloth 10 filters the dust-laden airflow and intercepts the dust, preventing the dust from adhering to the fan blades inside the fan body 1 under the influence of the airflow, thus ensuring the stability of the fan blade rotation. The servo motor 16 can be connected to an external wire and connected to a control switch. The action of the servo motor 16 is controlled by the control switch, thereby realizing the opening or closing of the sealing plate 15.

[0033] like Figure 4 and Figure 5 As shown, in this embodiment, both the guide plate 11 and the filter cloth 10 are inclined. The inclination angle and direction of the guide plate 11 and the filter cloth 10 are the same. The height of the guide plate 11 is greater than the height of the filter cloth 10. The inclined guide plate 11 is used to guide the airflow to flow towards the filter cloth 10. The inclined filter cloth 10 is used to guide the dust to accumulate at the bottom of the filter cloth 10. The inclined guide plate 11 and the filter cloth 10 can utilize gravity and airflow to make the dust-laden airflow flow more smoothly to the filter cloth 10 and allow the dust to accumulate at the bottom of the filter cloth 10, which is convenient for subsequent cleaning.

[0034] like Figure 4 As shown, in this embodiment, a baffle 12 is fixed to the bottom of the inner wall of the cleaning box 8. The baffle 12 is located between the brush rod 9 and the filter cloth 10. Since the inclined filter cloth 10 will guide some airflow downward, under the combined action of the inclined filter cloth 10 and the bottom of the inner wall of the cleaning box 8, this part of the airflow will form a vortex at the bottom of the filter cloth 10. The branch airflow in the vortex will carry the dust away. The baffle 12 can block the dust at the bottom of the filter cloth 10, so that the dust is concentrated and the difficulty of subsequent cleaning is reduced.

[0035] like Figure 4 As shown, in this embodiment, the baffle 12 includes an inclined portion 13 fixed to the bottom of the inner wall of the cleaning box 8. The top of the inclined portion 13 is inclined toward the filter cloth 10. The inclined design of the inclined portion 13 can better cooperate with the filter cloth 10. The inclined portion 13 can intercept the dust in the direction of dust movement, thereby enhancing the dust blocking effect.

[0036] like Figure 4As shown, in this embodiment, the top of the inclined portion 13 extends toward the filter cloth 10 to form an extension portion 14. The extension portion 14 increases the blocking area of ​​the baffle 12 for dust, further preventing dust from passing over the top of the inclined portion 13, improving the dust blocking ability, ensuring that dust can be concentrated at the bottom of the filter cloth 10, reducing the diffusion of dust in the cleaning box 8, and facilitating subsequent cleaning.

[0037] like Figure 4 and Figure 5 As shown, in this embodiment, several brush rods 9 are evenly distributed in the cleaning box 8. The evenly distributed brush rods 9 can ensure that the airflow passes between two adjacent brush rods 9, so that the airflow can stably carry the dust brushed off by the brush bristles to the filter cloth 10 for interception and filtration.

[0038] like Figure 3 As shown, in this embodiment, the driving component 7 is an electric push rod. As the driving component 7, the electric push rod has the characteristics of precise control and stable operation. It can accurately control the moving distance and speed of the cleaning box 8, ensuring that the brush rod 9 can stably and effectively clean the inner wall of the filter hole 5. At the same time, the electric push rod can be connected to an external wire, and then the wire can be connected to a control switch to realize the extension and retraction control of the electric push rod, thereby realizing the upward or downward movement of the cleaning box 8.

[0039] Working principle: When the fan body 1 is running, outside air enters the fan body 1 after being filtered by the filter plate 4 inside the air inlet hood 3. The filter holes 5 on the filter plate 4 are used to prevent larger particles of foreign matter from entering the fan body 1 and affecting its normal operation. As the usage time increases, the dust attached to the inner wall of the lower filter hole 5 will gradually increase. At this time, the drive component 7 needs to be activated to shorten the push rod of the drive component 7. The push rod drives the cleaning box 8 and the brush rod 9 to move downward to clean the lower filter hole 5. The brush rod 9, which is evenly distributed in the cleaning box 8, penetrates into the filter hole 5 through the bristles to brush away the dust attached to the inner wall of the filter hole 5.

[0040] When the cleaning box 8 moves, the servo motor 16 starts and drives the sealing plate 15 to rotate upward, opening the sealing plate 15. After opening, an air circulation channel is formed inside the cleaning box 8, and the outside airflow can pass through the cleaning box 8. When the airflow flows, the airflow carries the dust brushed off by the brush rod 9 and flows to the guide plate 11 and the filter cloth 10. The dust-laden airflow flowing to the guide plate 11 flows to the filter cloth 10 under the guidance of the guide plate 11. The filter cloth 10 intercepts and filters the dust in the dust-laden airflow. At the same time, the inclined filter cloth 10 causes the dust to accumulate at the bottom of the filter cloth 10 under the action of gravity and airflow, realizing the efficient interception and collection of dust.

[0041] Under the guidance of the inclined filter cloth 10, some airflow will form a vortex at the bottom of the filter cloth 10. The branch airflow in the vortex will carry dust away. The inclined part 13 on the baffle 12 effectively blocks the dust and prevents the dust from spreading everywhere. The extension part 14 at the top of the inclined part 13 increases the blocking area for the dust, thereby further preventing the dust from passing over the top of the inclined part 13 and further improving the dust blocking ability. The baffle 12 blocks the scattered dust and makes the dust concentrate at the bottom of the filter cloth 10, reducing the trouble of subsequent cleaning. After the cleaning box 8 moves to the bottom, the push rod of the drive component 7 no longer shortens. At the same time, the servo motor 16 drives the sealing plate 15 to rotate downward to close the through slot. After the slit is closed, the airflow cannot pass through the cleaning box 8. At this time, the filter hole 5 located below no longer allows airflow.

[0042] As the cleaning box 8 moves downward, it no longer blocks the filter hole 5 above. The outside airflow gradually enters the ventilation fan body 1 through the filter hole 5 above. When the filter hole 5 above needs to be cleaned, the push rod of the drive component 7 extends and drives the cleaning box 8 to move upward. The filter hole 5 above is cleaned in the same way as above. The two sets of filter holes 5 can be used alternately, so that the filter hole 5 can be cleaned without stopping the ventilation fan body 1, thus ensuring the continuity of underground ventilation.

[0043] After repeated automatic cleaning of the filter plate 4 and prolonged use, the filter plate 4 and cleaning mechanism 6 need to be disassembled and cleaned. To disassemble the filter plate 4, simply remove the bolts securing it to allow for a thorough cleaning. Then, remove the bolts securing the brush rod 9 from the side of the cleaning box 8 and remove it for cleaning. After removing the brush rod 9, remove the bolts securing the baffle 12 from the baffle 12 and remove it from the cleaning box 8 for cleaning. Next, remove the bolts securing the filter cloth 10 from the frame and remove it from the cleaning box 8 for cleaning. Finally, clean the dust inside the cleaning box 8. Cleaning is then performed. After cleaning, first place the frame on the filter cloth 10 between the bottom of the guide plate 11 and the bottom of the inner wall of the cleaning box 8, and then fix the frame with bolts. Then fix the baffle 12 to the bottom of the inner wall of the cleaning box 8 with bolts. Then place the brush rod 9 in the cleaning box 8, pass the bolt through the side of the cleaning box 8 and tighten it in the threaded groove at the end of the brush rod 9 to fix the brush rod 9. Then place the filter plate 4 in the air inlet hood 3, pass the bolt through the filter plate 4 and tighten it in the internal threaded block fixed in the air inlet hood 3 to fix the filter plate 4. Then the filter plate 4 and the cleaning mechanism 6 can be used again.

[0044] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A local ventilation fan for mines, comprising a fan body (1), characterized in that, Also includes: The filter mechanism (2) includes an air inlet hood (3) fixed to the air inlet of the ventilator body (1). The air inlet end of the air inlet hood (3) is square. A filter plate (4) is fixed on the inner wall of the air inlet end of the air inlet hood (3). At least two sets of filter holes (5) are opened on the side of the filter plate (4). The cleaning mechanism (6) includes a cleaning box (8) slidably connected to the side of the filter plate (4). Several brush rods (9) are fixed on the inner wall of the cleaning box (8). A driving component (7) is provided on the opposite side of the cleaning box (8). The driving component (7) is fixed on the inner wall of the air inlet hood (3). The driving component (7) is used to drive the cleaning box (8) to move vertically. When the cleaning box (8) moves vertically, the bristles of the brush rods (9) are used to clean the dust attached to the inner wall of the filter hole (5). The inner wall of the cleaning box (8) is fixed with a guide plate (11) and a filter cloth (10). The filter cloth (10) is fixed at the bottom of the guide plate (11). A through groove is opened on the side of the cleaning box (8) near the fan. A sealing plate (15) is set on the side of the cleaning box (8) corresponding to the through groove. The guide plate (11) and the filter cloth (10) are located between the brush rod (9) and the sealing plate (15). A connecting seat (17) is fixed on the opposite side of the cleaning box (8). The sealing plate (15) is rotatably connected between the two connecting seats (17). The telescopic end of the drive component (7) is fixedly connected to the bottom of the connecting seat (17). A servo motor (16) is fixed on the top of the connecting seat (17). The output end of the servo motor (16) is fixedly connected to the side of the sealing plate (15).

2. The mine local ventilation fan according to claim 1, characterized in that, Both the guide plate (11) and the filter cloth (10) are inclined. The inclination angle and direction of the guide plate (11) and the filter cloth (10) are the same. The height of the guide plate (11) is greater than the height of the filter cloth (10). The inclined guide plate (11) is used to guide the airflow to flow to the filter cloth (10). The inclined filter cloth (10) is used to guide the dust to accumulate at the bottom of the filter cloth (10).

3. The mine local ventilation fan according to claim 2, characterized in that, A baffle (12) is fixed to the bottom of the inner wall of the cleaning box (8), and the baffle (12) is located between the brush rod (9) and the filter cloth (10).

4. The mine local ventilation fan according to claim 3, characterized in that, The baffle (12) includes an inclined portion (13) fixed to the bottom of the inner wall of the cleaning box (8), with the top of the inclined portion (13) inclined toward the filter cloth (10).

5. The mine local ventilation fan according to claim 4, characterized in that, The top of the inclined portion (13) extends toward the filter cloth (10) to form an extension portion (14).

6. The mine local ventilation fan according to claim 1, characterized in that, Several of the brush rods (9) are evenly distributed in the cleaning box (8).

7. The mine local ventilation fan according to claim 1, characterized in that, The driving component (7) is an electric push rod.

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