Ventilation vehicle for tunnel drilling and blasting method construction

Abstract

The utility model discloses a ventilation vehicle for tunnel drilling and blasting method construction, which comprises a dust collecting box, a cyclone dust collector and a filter box which are fixedly arranged on a trolley, an air inlet hopper is fixedly arranged at an air inlet of the cyclone dust collector, and an air outlet of the cyclone dust collector is communicated with an air inlet of the filter box through a connecting pipe. An air outlet flange of the filter box is connected with an induced draft fan, and an air outlet flange of the induced draft fan is connected with a corrugated hose; when the tunnel dust removal device is used, after the air outlet end of the corrugated hose is connected with the air inlet end of an exhaust pipeline in a tunnel, the induced draft fan is started to suck air in the tunnel into the cyclone dust collector through the air inlet hopper, large-particle impurities in the air are filtered through the cyclone dust collector, and then the air enters the filter box through the connecting pipe; the stainless steel filter plate with the filter holes can conduct secondary filtration on the air, and then the air enters the corrugated hose through the induced draft fan and is exhausted out of the tunnel through the exhaust pipeline, so that pollution to the external environment of the tunnel is reduced, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a ventilation vehicle for tunnel drilling and blasting construction. Background Technique

[0002] The drilling and blasting method is a commonly used tunnel construction method. First, blast holes are drilled at the excavation site, and explosives are buried and detonated. Since the explosives are located in the tunnel and the force is not easily dissipated, the full force of the explosives can be exerted to break a large amount of rock, enabling the project to proceed quickly and the construction progress to be easily controlled.

[0003] During the construction process of the drilling and blasting method, after each detonation, the tunnel needs to be ventilated to discharge the dust and harmful gases generated by the explosion. After retrieval, the patent with the publication number CN219159016U discloses a ventilation vehicle for a tunnel constructed by the drilling and blasting method. Through the cooperation of the rotating rod and the threaded hole provided, the connecting ring can be moved, and the convex block and the groove are used in cooperation to play a role in clamping the connecting ring, achieving the purpose of fixing the connecting ring at the chassis, solving the problem of inconvenient replacement of the exhaust pipe, and the problem that the connection between the connecting ring and the chassis is likely to generate gaps during dragging, thereby reducing the use effect of the ventilation vehicle. The cooperation of the exhaust fan and the barrier net is adopted to facilitate blocking the crushed stones and prevent the crushed stones from entering the chassis and causing damage to the exhaust fan.

[0004] In the actual use process of the above solution, although a barrier net for preventing crushed stones from entering the chassis is provided, the barrier net can only block the relatively large-sized crushed stones and cannot filter dust and the like. As a result, dust is easily adhered to the fan blades of the exhaust fan and inside the exhaust pipe, and a large amount of dust is directly discharged outside the tunnel, causing relatively serious pollution to the external environment, and improvement is needed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a ventilation vehicle for tunnel drilling and blasting construction to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A ventilation vehicle for tunnel drilling and blasting construction, comprising an ash collection box, a cyclone dust collector, and a filter box fixedly installed on a handcart. An air inlet hopper is fixedly installed at the air inlet of the cyclone dust collector. The air outlet of the cyclone dust collector is communicated with the air inlet of the filter box through a connecting pipe. The air outlet of the filter box is flange-connected with an induced draft fan. The air outlet of the induced draft fan is flange-connected with a corrugated hose. The bottom end of the filter box is fixedly communicated with an ash discharge pipe. Two independent chambers are arranged in the ash collection box. The bottom end of the ash discharge pipe and the ash discharge end of the cyclone dust collector are communicated with the corresponding chambers. A partition frame is fixedly connected to the inner wall of the filter box. The outer wall of the opening of the partition frame is detachably connected with a stainless steel filter plate. A plurality of filter holes are arranged through the stainless steel filter plate. The air outlet and the air inlet of the filter box are respectively located on both sides of the partition frame. The air inlet of the filter box and the top end of the ash discharge pipe are located on the same side of the partition frame.

[0008] As a further scheme of the utility model: An inspection opening is arranged at the corresponding position of the outer wall of the filter box and the stainless steel filter plate. The outer wall of the inspection opening is detachably connected with a cover plate through a plurality of screws at the corresponding position of the inspection opening. A U-shaped slot is fixedly connected to the outer wall of the partition frame. Three adjacent outer edges of the stainless steel filter plate are located inside the U-shaped slot, and the outer edge of the stainless steel filter plate located outside the U-shaped slot abuts against the cover plate.

[0009] As a further scheme of the utility model: The middle part of the stainless steel filter plate is spherical and bulged, and the filter holes are all located at the bulged part in the middle of the stainless steel filter plate. A rotating shaft is rotatably connected to the inside of the filter box through a bearing. A striking mechanism is installed at the corresponding position of the rotating shaft and the bulged part of the stainless steel filter plate. A motor for driving the rotating shaft is fixedly installed on the outer wall of the filter box.

[0010] As a further scheme of the utility model: The striking mechanism includes a collar fixedly sleeved on the rotating shaft. A plurality of springs are fixedly connected to the outer wall of the collar. A hammer is fixedly connected to the end of the spring far away from the collar.

[0011] As a further scheme of the utility model: The bottom end of the ash discharge pipe and the ash discharge end of the cyclone dust collector are both fixedly connected to the top of the ash collection box. Drawers are slidably penetrated through the corresponding positions of the outer wall of the ash collection box and the two chambers. The drawers are detachably connected to the ash collection box through buckles.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model is in use, after connecting the air outlet end of the corrugated hose to the air inlet end of the exhaust duct in the tunnel, start the induced draft fan, and the air in the tunnel can be sucked into the cyclone dust collector through the air inlet hopper, so as to filter large particle impurities in the air through the cyclone dust collector. Then the air enters the filter box through the connecting pipe, and the stainless steel filter plate with filter holes will filter the air for the second time. Then the air enters the corrugated hose by the induced draft fan and is discharged to the outside of the tunnel through the exhaust duct, thereby reducing the pollution caused to the external environment of the tunnel and having a good use effect. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a ventilation vehicle for tunnel drilling and blasting construction.

[0015] Figure 2 It is a schematic cross-sectional structural diagram of a filter box in a ventilation vehicle for tunnel drilling and blasting construction.

[0016] Figure 3 It is a schematic cross-sectional structural diagram of an ash collection box in a ventilation vehicle for tunnel drilling and blasting construction.

[0017] Among them, the trolley 1, the cyclone dust collector 2, the air inlet hopper 3, the connecting pipe 4, the filter box 5, the inspection opening 6, the cover plate 7, the partition frame 8, the U-shaped slot 9, the stainless steel filter plate 10, the ash discharge pipe 11, the rotating shaft 12, the collar 13, the spring 14, the hammer 15, the induced draft fan 16, the corrugated hose 17, the ash collection box 18, the chamber 19, the drawer 20. Specific Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 3, in the embodiment of the present utility model, a ventilation vehicle for tunnel drilling and blasting construction includes an ash collecting box 18, a cyclone dust collector 2, and a filter box 5 fixedly installed on a handcart 1. An air inlet hopper 3 is fixedly installed at the air inlet of the cyclone dust collector 2. The air outlet of the cyclone dust collector 2 is communicated with the air inlet of the filter box 5 through a connecting pipe 4. The air outlet of the filter box 5 is flange-connected with an induced draft fan 16. The air outlet of the induced draft fan 16 is flange-connected with a corrugated hose 17. The bottom end of the filter box 5 is fixedly communicated with a dust discharge pipe 11. Two independent chambers 19 are arranged in the ash collecting box 18. The bottom end of the dust discharge pipe 11 and the ash discharge end of the cyclone dust collector 2 are communicated with the corresponding chambers 19. A partition frame 8 is fixedly connected to the inner wall of the filter box 5. The outer wall of the opening of the partition frame 8 is detachably connected with a stainless steel filter plate 10. A plurality of filter holes are arranged through the stainless steel filter plate 10. The air outlet and the air inlet of the filter box 5 are respectively located on both sides of the partition frame 8. The air inlet of the filter box 5 and the top end of the dust discharge pipe 11 are located on the same side of the partition frame 8.

[0020] By adopting the above scheme, in use, after connecting the air outlet end of the corrugated hose 17 to the air inlet end of the exhaust duct in the tunnel, start the induced draft fan 16, and the air in the tunnel can be sucked into the cyclone dust collector 2 through the air inlet hopper 3, so as to filter large particle impurities in the air through the cyclone dust collector 3. Then the air enters the filter box 5 through the connecting pipe 4. The stainless steel filter plate 10 with filter holes will filter the air secondly. Then the air enters the corrugated hose 17 through the induced draft fan 16 and is discharged to the outside of the tunnel through the exhaust duct, thereby reducing the pollution caused to the external environment of the tunnel and having good use effect.

[0021] Specifically combined with Figure 1 and Figure 2 , in an embodiment of the present utility model, a maintenance opening 6 is opened at the corresponding position of the outer wall of the filter box 5 and the stainless steel filter plate 10. The outer wall of the maintenance opening 6 is detachably connected with a cover plate 7 through a plurality of screws at the corresponding position of the maintenance opening 6. An inverted U-shaped slot 9 is fixedly connected to the outer wall of the partition frame 8. Three adjacent outer edges of the stainless steel filter plate 10 are located inside the inverted U-shaped slot 9, and the outer edge of the stainless steel filter plate 10 located outside the inverted U-shaped slot 9 abuts against the cover plate 7.

[0022] Through the settings of the maintenance opening 6, the cover plate 7 and the inverted U-shaped slot 9, it is convenient to disassemble and assemble the stainless steel filter screen 10 in the filter box 5, so as to facilitate the cleaning or replacement of the stainless steel filter screen 10.

[0023] Specifically combined with Figure 2, in an embodiment of the present utility model, the middle part of the stainless steel filter plate 10 is spherically bulged, and the filter holes are all located at the bulged part in the middle of the stainless steel filter plate 10. A rotating shaft 12 is rotatably connected to the inside of the filter box 5 through a bearing. A striking mechanism is installed at the corresponding position of the rotating shaft 12 and the bulged part of the stainless steel filter plate 10. A motor for driving the rotating shaft 12 is fixedly installed on the outer wall of the filter box 5.

[0024] Furthermore, the striking mechanism includes a collar 13 fixedly sleeved on the rotating shaft 12. A plurality of springs 14 are fixedly connected to the outer wall of the collar 13. One end of the spring 14 far from the collar 13 is fixedly connected to a hammer 15.

[0025] By starting the motor to drive the rotation of the rotating shaft 12, the springs 14 and the hammers 15 can be driven to rotate inside the filter box 5, so as to utilize the centrifugal force to stretch the springs 14, so that the hammers 15 strike the bulged part of the stainless steel filter screen 10 during the rotation process, so as to shake off the dust adhered to the stainless steel filter screen 10, thereby extending the maintenance cycle of the stainless steel filter screen 10.

[0026] Specifically combined with Figure 1 and Figure 3 , in an embodiment of the present utility model, the bottom end of the ash discharge pipe 11 and the ash discharge end of the cyclone dust collector 2 are both fixedly connected to the top of the ash collection box 18. Drawers 20 are slidably penetrated through the corresponding positions of the outer wall of the ash collection box 18 and the two chambers 19. Sealing rings are pasted on the outer wall at the opening of the chamber 19. The drawers 20 are detachably connected to the ash collection box 18 through buckles, and when the drawers 20 are fixed to the ash collection box 18, the drawers 20 are closely attached to the sealing rings.

[0027] The dust collected by the cyclone dust collector 2 and the filter box 5 will directly fall into the corresponding drawers 20 in the ash collection box 18, and only need to regularly draw out the drawers 20 for dumping.

[0028] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ventilation vehicle for tunnel drilling and blasting construction, characterized in that: It includes an ash collecting box (18), a cyclone dust collector (2), and a filter box (5) fixedly installed on a trolley (1). An air inlet hopper (3) is fixedly installed at the air inlet of the cyclone dust collector (2). The air outlet of the cyclone dust collector (2) is communicated with the air inlet of the filter box (5) through a connecting pipe (4). A draft fan (16) is flange-connected to the air outlet of the filter box (5). A corrugated hose (17) is flange-connected to the air outlet of the draft fan (16). A dust discharge pipe (11) is fixedly communicated with the bottom end of the filter box (5). Two independent chambers (19) are arranged in the ash collecting box (18). The bottom end of the dust discharge pipe (11) and the ash discharge end of the cyclone dust collector (2) are communicated with the corresponding chambers (19). A partition frame (8) is fixedly connected to the inner wall of the filter box (5). A stainless steel filter plate (10) is detachably connected to the outer wall of the opening of the partition frame (8). A number of filter holes are arranged through the stainless steel filter plate (10). The air outlet and the air inlet of the filter box (5) are respectively located on both sides of the partition frame (8). The air inlet of the filter box (5) and the top end of the dust discharge pipe (11) are located on the same side of the partition frame (8).

2. A ventilation vehicle for tunnel drilling and blasting construction according to claim 1, characterized in that: An inspection opening (6) is provided at the corresponding position of the outer wall of the filter box (5) and the stainless steel filter plate (10). A cover plate (7) is detachably connected to the outer wall corresponding to the inspection opening (6) through a number of screws. A U-shaped slot (9) is fixedly connected to the outer wall of the partition frame (8). Three adjacent outer edges of the stainless steel filter plate (10) are located inside the U-shaped slot (9), and the outer edge of the stainless steel filter plate (10) located outside the U-shaped slot (9) abuts against the cover plate (7).

3. A ventilation vehicle for tunnel drilling and blasting construction according to claim 1, characterized in that: The middle part of the stainless steel filter plate (10) is spherically bulged, and the filter holes are all located at the bulged part in the middle of the stainless steel filter plate (10). A rotating shaft (12) is rotatably connected to the inside of the filter box (5) through a bearing. A striking mechanism is installed at the corresponding position of the rotating shaft (12) and the bulged part of the stainless steel filter plate (10). A motor for driving the rotating shaft (12) is fixedly installed on the outer wall of the filter box (5).

4. A ventilation vehicle for tunnel drilling and blasting construction according to claim 3, characterized in that: The striking mechanism includes a collar (13) fixedly sleeved on the rotating shaft (12). A number of springs (14) are fixedly connected to the outer wall of the collar (13). A hammer (15) is fixedly connected to the end of the spring (14) away from the collar (13).

5. A ventilation vehicle for tunnel drilling and blasting construction according to claim 1, characterized in that: The bottom end of the dust discharge pipe (11) and the ash discharge end of the cyclone dust collector (2) are both fixedly connected to the top of the ash collecting box (18). Drawers (20) are slidably penetrated through the outer wall of the ash collecting box (18) corresponding to the two chambers (19). The drawers (20) are detachably connected to the ash collecting box (18) through buckles.

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