Ventilation and dust removal device for roadway

Abstract

The ventilation and dust removal device comprises an air inlet fan and an air outlet fan, an air duct connecting cylinder is connected between the air inlet fan and the air outlet fan, an opening is formed in the surface of the air duct connecting cylinder, and a dust filtering structure which can be cleaned without shutdown is installed in the air duct connecting cylinder. The filtering structure comprises a driving structure and a filtering structure, the driving structure drives the filtering structure to rotate, the rotating angle of each time is 90 degrees, the driving structure comprises mounting plates symmetrically mounted on the inner surface of the air duct connecting cylinder, motors are mounted at the upper ends of the mounting plates, and bearing seats are mounted on the upper end faces of the mounting plates and located on the right sides of the motors through mounting blocks; the output end of the motor is connected with a rotating shaft, the filtering structure is installed on the surface of the rotating shaft and comprises a first dust filtering cylinder installed on the surface of the rotating shaft, and a connecting hole is formed in the surface of the first dust filtering cylinder. The ventilation and dust removal device for the roadway solves the problems that an existing ventilation and dust removal device for the roadway is poor in dust filtering effect and inconvenient to clean and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation and dust removal devices, in particular to a ventilation and dust removal device for tunnels. Background Art

[0002] During coal mining, tunnels often need to be excavated during construction to facilitate coal mining. A large amount of dust will appear during tunnel excavation. In addition, due to the small space in the tunnel and the thin air, working in the tunnel for a long time is prone to hypoxia, which affects physical safety. In order to ventilate and remove the dust in the tunnel, ventilation and dust removal devices are generally installed in the tunnel after excavation to enable the air in the tunnel to circulate and remove dust. However, the general dust removal effect is not good and cannot work continuously. It needs to be shut down for cleaning, which makes its replacement more troublesome.

[0003] Therefore, in order to improve the efficiency of dust removal during ventilation and facilitate replacement and cleaning, Chinese patent CN214389467U, a coal mine tunnel excavation ventilation dust removal device points out that the water in the water tank can retain insoluble matter in the air in the water, and then the multiple leakage holes on the partition can decompose the large bubbles in the water into multiple small bubbles, preventing some insoluble matter from flowing out with the large bubbles, thereby improving the filtering effect of the water tank, and then the air enters the dust removal box through the connecting pipe, and then the mesh dust cover cooperates with the filter cloth bag on its outer wall to retain the dust in the air between the mesh dust cover and the collection frame, preventing dust from entering the dust removal box, and a dust-proof guide component is provided at the outlet of the connecting pipe, and multiple filters that are equidistantly staggered and obliquely distributed can retain dust in the mesh dust cover. Between the dust collector and the collection frame, a dust net is also provided in the dust removal box to prevent dust from flying out again. When bubbles rise in the water through water filtration, they disturb the surrounding water molecules and form a certain water flow. However, this water flow is usually local and short-lived, and its intensity is not enough to form an effective filtering mechanism to capture and remove dust particles in the water. Secondly, dust particles are usually small and may be affected by various forces in the water, such as gravity, buoyancy, Brownian motion, etc. These particles may be in a suspended state in the water or slowly sink due to gravity. The rising movement of the bubbles is not enough to generate enough capture force for these particles. When they pass through the water, they enter the filter bag for filtration. Although this method can achieve a filtering effect, the effect is not good.

[0004] Secondly, the patent document also points out that the mounting ring is fixedly connected to the fixing ring through the cooperation of the annular threaded block and the annular threaded groove on the fixing ring, which makes it easy to disassemble and assemble the exhaust fan for cleaning. By opening the box door, the collection frame can be taken out for cleaning, the built-in threaded ring can be screwed out, the mesh dust cover can be taken out for cleaning, and the external threaded tube can be taken out for cleaning. That is, the device can take out most of the filter components for cleaning, thereby ensuring the service life and filtering effect of the entire device. Although this method can facilitate cleaning, the operation is more troublesome, and the design between the structures is more complicated, and the operation is not convenient.

[0005] Therefore, in order to improve the filtering effect and to replace the filtering structure more conveniently, a ventilation and dust removal device for tunnels is proposed to solve the shortcomings of the above-mentioned prior art. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a ventilation and dust removal device for a tunnel, which solves the problems that the existing ventilation and dust removal devices for a tunnel have poor dust filtering effect and are inconvenient to clean and replace.

[0007] 14. The dust collecting device as claimed in claim 13, wherein the air filter is mounted on a linking plate of the fan and the control cabinet, and the control cabinet is provided with a block diagram of a dust collecting device. The dust collecting device as claimed in claim 13, wherein the control cabinet is provided with a block diagram of a dust collecting device. The dust collecting device as claimed in claim 13, wherein the control cabinet is provided with a block diagram of a dust collecting device.

[0008] Through the above technical solution, further, the dust filter cartridge 1 is formed as a whole by welding two groups of dust filter cartridges 1, a cavity is formed inside the dust filter cartridge 1, and the dust filter cartridge 2 is inserted into the cavity through the mounting hole, and the surface of the dust filter cartridge 2 does not contact the cavity wall.

[0009] Furthermore, annular protrusions are equidistantly arranged on the inner wall of the cavity, and the cross-sectional widths of the annular protrusions increase from the outside to the inside, and the annular protrusions at the maximum width do not contact the two surfaces of the dust filter cartridge.

[0010] As a preferred technical solution, a duct blocking plate is installed on the inner wall of the duct connecting tube, the lower end face of the duct blocking plate is in contact with a surface of the dust filter tube, and the lower end face of the duct blocking plate is provided with an arc end face, which is consistent with the arc surface of the outer surface of the dust filter tube.

[0011] Furthermore, the detection device includes a mounting block installed on the right side of the wind duct blocking plate, and a wind speed sensor is installed on the lower end surface of the mounting block.

[0012] As a preferred technical solution, the air inlet fan and the air outlet fan have the same structure, and the air inlet fan includes a front axial flow fan, an upper end surface of the front axial flow fan is installed with a mounting frame, a fan motor is installed in the front axial flow fan through a mounting plate, and the output end of the fan motor is connected to a fan blade, and the air outlet fan is a rear axial flow fan, and an air duct connecting tube is installed between the front axial flow fan and the rear axial flow fan.

[0013] Furthermore, the lower end surface of the mounting plate is an arc-shaped surface, which is consistent with the arc-shaped surface of the inner wall of the air duct connecting tube.

[0014] Compared with the prior art, the utility model provides a ventilation and dust removal device for tunnels, which has the following beneficial effects:

[0015] 1. This device uses the front axial flow fan to draw the air in the tunnel into the air duct connection tube, and then draws it out by the rear axial flow fan, and filters the dust in the air duct connection tube. Specifically, the air is filtered by entering the dust filter tube. Figure 3 and Figure 8 It can be seen that its dust filter barrel is divided into two groups. After filtering by the dust filter barrel on the left, the air enters the cavity and is intercepted and filtered again by the annular protrusion in the cavity. Then the air passes through the dust filter barrel on the right for dust filtration again, so that the air passing through the rear axial flow fan is dust-free, thereby achieving the effect of ventilation and dust removal, and this dust removal method has a more obvious dust removal effect.

[0016] 2. This device detects the wind speed at the air outlet of the dust filter cartridge through a wind speed sensor. If the wind speed is low, it indicates that the amount of dust intercepted in the dust filter barrel is large, causing a blockage problem. At this time, the motor drives the shaft to rotate and then drives the dust filter cartridge to rotate, so that a new set of dust filter cartridges enters the air duct connecting barrel to filter the dust. In this way, the dust filter cartridge with dust is rotated to the outside of the air duct connecting barrel, which is convenient for replacement without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a ventilation and dust removal device for a tunnel according to the present utility model;

[0018] Figure 2 This is a schematic diagram of the front axial flow fan structure and the rear axial flow fan of a tunnel ventilation and dust removal device of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the air duct connecting tube of a ventilation and dust removal device for a laneway according to the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of an air duct connecting tube of a ventilation and dust removal device for a laneway according to the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a dust filter cartridge for a ventilation and dust removal device for a laneway according to the present utility model;

[0022] Figure 6 This is a schematic diagram of the dust filter cartridge structure and installation of a ventilation and dust removal device for a tunnel according to the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of a dust filter cartridge for a ventilation and dust removal device for a laneway according to the present utility model;

[0024] Figure 8 This utility model is a ventilation and dust removal device for tunnels Figure 3 Schematic diagram of the local enlarged structure at point A.

[0025] In the figure: 1. Front axial flow fan; 2. Mounting frame; 3. Fan motor; 4. Fan blades; 5. Air duct connecting tube; 6. Rear axial flow fan; 7. Opening; 8. Mounting plate; 9. Motor; 10. Bearing seat; 11. Rotating shaft; 12. Dust filter cartridge 1; 13. Air duct blocking plate; 14. Mounting block; 15. Wind speed sensor; 16. Mounting hole; 17. Connecting hole; 18. Dust filter cartridge 2; 19. Annular protrusion. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example

[0028] See also Figure 1-8The utility model provides the following technical solutions: a ventilation and dust removal device for a tunnel, comprising an air inlet fan and an air outlet fan, an air duct connecting tube 5 connected between the air inlet fan and the air outlet fan, an opening 7 is opened on the surface of the air duct connecting tube 5, a dust filtering structure that does not require shutdown for cleaning is installed in the air duct connecting tube 5, the filtering structure comprises a driving structure and a filtering structure, the driving structure drives the filtering structure to rotate, each rotation angle is 90 degrees, the driving structure comprises a mounting plate 8 symmetrically mounted on the inner surface of the air duct connecting tube 5, a motor 9 is mounted on the upper end of the mounting plate 8, and the mounting plate 8 The upper end surface is located on the right side of the motor 9 and is installed with a bearing seat 10 through a mounting block. The output end of the motor 9 is connected to the rotating shaft 11, and the filtering structure is installed on the surface of the rotating shaft 11. The filtering structure includes a dust filter cartridge 12 installed on the surface of the rotating shaft 11. The surface of the dust filter cartridge 12 is provided with a connecting hole 17. The rotating shaft 11 crosses the connecting hole 17. The surface of the dust filter cartridge 12 is provided with mounting holes 16 in a circular array. A dust filter cartridge 2 18 is installed in the mounting hole 16, and a detection device is installed in the air duct connecting tube 5. The detection device corresponds to the air outlet end of the filtering structure.

[0029] In this embodiment, the specific working principle is as follows: through the action of the air inlet fan, the air in the lane is drawn into the air stop connecting tube 5 for dust filtration, and then the air outlet fan draws out the filtered air. During the filtration, the dust filter tube 2 18 on the left side is filtered, and the air enters the cavity and is intercepted and filtered again by the annular protrusion 19 in the cavity. Then the air passes through the dust filter tube 2 18 on the right side for dust filtration again, so that the air passing through the rear axial flow fan 6 is free of dust, thereby achieving the effect of ventilation and dust removal, and the dust removal effect of this dust removal method is more obvious, and the wind speed sensor 15 is used to detect the dust. The wind speed at the air outlet of the second dust filter cartridge 18 is detected. If the wind speed is small, it indicates that the amount of dust intercepted in the dust filter barrel is large, causing a blockage problem. At this time, the motor 9 drives the rotating shaft 11 to rotate and then drives the dust filter cartridge 12 to rotate, so that a new group of dust filter cartridges 2 18 enters the air duct connecting tube 5 to filter the dust. In this way, the dust filter cartridge with dust is rotated to the outside of the air duct connecting tube 5, which is convenient for replacement and does not require shutdown, thereby solving the problem that the existing ventilation and dust removal device for tunnels has poor dust filtering effect and is inconvenient to clean and replace.

[0030] In order to explain the dust filter barrel 12, please refer to Figure 5 and Figure 6It can be seen that the dust filter cartridge 12 is welded as a whole by two groups of dust filter cartridges 12. A cavity is formed inside the dust filter cartridge 12. When air enters the cavity, it can produce a turbulent effect on the flow direction of the air, so that it can partially intercept the dust in the air. The dust filter cartridge 2 18 is inserted into the cavity through the mounting hole 16, and the surface of the dust filter cartridge 2 18 does not contact the cavity wall.

[0031] According to the above, in order to improve the efficiency of the cavity in intercepting dust, please refer to Figure 8 It can be seen that annular protrusions 19 are equidistantly arranged on the inner wall of the cavity, and the cross-sectional width of the annular protrusions 19 increases from the outside to the inside, and the annular protrusions 19 at the largest width do not contact the surface of the dust filter cartridge 18. When the air contacts the annular protrusions 19, a groove is formed between the two groups of annular protrusions, thereby allowing the dust in the air that is not completely filtered to be precipitated and filtered.

[0032] In order to prevent air from passing directly through the air duct connecting tube 5, please refer to Figure 3 It can be seen that a duct blocking plate 13 is installed on the inner wall of the duct connecting tube 5, and the lower end face of the duct blocking plate 13 contacts the surface of the dust filter tube 12, and the lower end face of the duct blocking plate 13 is provided with an arc end face, which is consistent with the arc surface of the outer surface of the dust filter tube 12.

[0033] In order to detect the wind speed at the air outlet of the dust filter barrel 18, it is convenient to adjust the angle position of the dust filter barrel 12, so as to facilitate the cleaning of the filtered dust filter barrel 18. Figure 3 It can be seen that the detection device includes a mounting block 14 mounted on the right side of the air duct blocking plate 13 , and a wind speed sensor 15 is mounted on the lower end surface of the mounting block 14 .

[0034] See Figure 1 and Figure 2 It can be seen that the structure of the air inlet fan and the air outlet fan is consistent. The air inlet fan includes a front axial flow fan 1, and a mounting frame 2 is installed on the upper end surface of the front axial flow fan 1. A fan motor 3 is installed in the front axial flow fan 1 through a mounting plate, and the output end of the fan motor 3 is connected to a fan blade 4. The air outlet fan is a rear axial flow fan 6, and an air duct connecting tube 5 is installed between the front axial flow fan 1 and the rear axial flow fan 6.

[0035] In order to facilitate the installation of the motor, the lower end surface of the mounting plate 8 is an arc-shaped surface, which is consistent with the arc-shaped surface of the inner wall of the air duct connecting tube 5.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ventilation and dust removal device for a tunnel, comprising an air inlet fan and an air outlet fan, characterized in that: An air duct connecting cylinder (5) is connected between the air inlet fan and the air outlet fan. An opening (7) is provided on the surface of the air duct connecting cylinder (5). A dust filtering structure that does not require shutdown for cleaning is installed in the air duct connecting cylinder (5). The filtering structure includes a driving structure and a filtering structure. The driving structure drives the filtering structure to rotate. Each rotation angle is 90 degrees. The driving structure includes a mounting plate (8) symmetrically mounted on the inner surface of the air duct connecting cylinder (5). A motor (9) is mounted on the upper end of the mounting plate (8). The upper end surface of the mounting plate (8) is located on the right side of the motor (9) and is mounted with a bearing seat (1) through a mounting block. 0), the output end of the motor (9) is connected to a rotating shaft (11), the filtering structure is installed on the surface of the rotating shaft (11), the filtering structure includes a dust filter cartridge (12) installed on the surface of the rotating shaft (11), the surface of the dust filter cartridge (12) is provided with a connecting hole (17), the rotating shaft (11) crosses the connecting hole (17), the surface of the dust filter cartridge (12) is provided with mounting holes (16) in a circular array, the mounting holes (16) are provided with dust filter cartridges (18), and a detection device is installed in the air duct connecting tube (5), the detection device corresponding to the air outlet end of the filtering structure.

2. A ventilation and dust removal device for a tunnel according to claim 1, characterized in that: The dust filter cartridge 1 (12) is formed as a whole by welding two groups of dust filter cartridges 1 (12), a cavity is formed inside the dust filter cartridge 1 (12), and the dust filter cartridge 2 (18) is inserted into the cavity through the mounting hole (16), and the surface of the dust filter cartridge 2 (18) does not contact the cavity wall.

3. A ventilation and dust removal device for a tunnel according to claim 2, characterized in that: Annular protrusions (19) are equidistantly arranged on the inner wall of the cavity, and the cross-sectional width of the annular protrusions (19) increases from the outside to the inside, and the annular protrusion (19) at the maximum width does not contact the surface of the second dust filter cartridge (18).

4. The ventilation and dust removal device for a tunnel according to claim 1, characterized in that: An air duct blocking plate (13) is installed on the inner wall of the air duct connecting tube (5), and the lower end surface of the air duct blocking plate (13) contacts the surface of the dust filter tube (12), and the lower end surface of the air duct blocking plate (13) is provided with an arc end surface, which is consistent with the arc surface of the outer surface of the dust filter tube (12).

5. The ventilation and dust removal device for a tunnel according to claim 1, characterized in that: The detection device comprises a mounting block (14) mounted on the right side of the wind duct blocking plate (13), and a wind speed sensor (15) is mounted on the lower end surface of the mounting block (14).

6. The ventilation and dust removal device for a tunnel according to claim 1, characterized in that: The air inlet fan and the air outlet fan have the same structure, wherein the air inlet fan comprises a front axial flow fan (1), an upper end surface of the front axial flow fan (1) is mounted with a mounting frame (2), a fan motor (3) is mounted inside the front axial flow fan (1) via a mounting plate, and a fan blade (4) is connected to the output end of the fan motor (3), and the air outlet fan is a rear axial flow fan (6), and an air duct connecting tube (5) is mounted between the front axial flow fan (1) and the rear axial flow fan (6).

7. The ventilation and dust removal device for a tunnel according to claim 1, characterized in that: The lower end surface of the mounting plate (8) is an arcuate surface, and the arcuate surface is consistent with the arcuate surface of the inner wall of the air duct connecting cylinder (5).

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