Dust removal device for tunnel drilling and blasting method construction

Abstract

The utility model discloses a dust removal device for tunnel drilling and blasting method construction, and relates to the technical field of tunnel construction, the dust removal device comprises a box body, a dust filtering cavity, a water storage cavity and a spraying dust fall cavity are sequentially arranged in the box body from front to back, the dust filtering cavity is connected with the spraying dust fall cavity through a connecting channel arranged right below the water storage cavity, a dust filtering net is arranged in the dust filtering cavity, and the spraying dust fall cavity is connected with the water storage cavity. A first electric telescopic rod and a second electric telescopic rod are arranged on the front portion of the box body, and the cylinder body end of the first electric telescopic rod and the cylinder body end of the second electric telescopic rod are both hinged to the box body. Flying dust generated during tunnel construction can be sucked into the box body through the dust suction cover and the dust suction pipe, sequentially passes through the dust filtering net and spraying dust falling and then is discharged, in this way, dust removal can be more thorough, meanwhile, the spraying dust falling range can be narrowed, and the purpose of saving water can be achieved.

Description

Technical Field

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

[0002] The construction method of drilling holes at the working face, charging the holes with explosives, and detonating the broken medium is simply called the drilling and blasting method. Because of its flexible, fast and efficient characteristics, the drilling and blasting method has become the main method for tunnel construction. However, a large amount of dust and fumes will be generated during tunnel construction by the drilling and blasting method. Since the tunnel is a relatively enclosed space, the dust and fumes will have an adverse impact on the physical health of construction workers. Therefore, it is necessary to carry out dust reduction treatment on the dust and fumes in the tunnel.

[0003] After retrieval, the patent authorization announcement number CN 216043853 U discloses a spray dust removal device for tunnel construction, "including a water tank, a column is fixedly arranged on the top of the water tank, a storage battery and a cross plate are arranged on one side of the column, a spray head is movably arranged on one side of the cross plate, a drainage motor is arranged on the top of the water tank, a water suction pipe and a water outlet pipe are respectively arranged on the drainage motor, the bottom of the water suction pipe extends into the water tank, a conduit is arranged on the top of the water outlet pipe, the top of the conduit is fixedly connected with one side of the spray head, a support frame is fixedly arranged on the top of the water tank, an adjusting structure is arranged on the support frame, and four universal wheels arranged in a rectangular array are fixedly arranged at the bottom of the water tank". The above device directly sprays into the air for dust reduction. However, the dust generated during tunnel construction spreads quickly and widely. Directly spraying for dust reduction will consume a large amount of water, and the ground in the tunnel is wet and slippery and there is a lot of mud after spraying, which is not conducive to the construction of personnel and equipment in the tunnel. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dust removal device for tunnel drilling and blasting construction to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dust removal device for tunneling construction by drill and blast method, comprising a box body. Inside the box body, a dust filtering chamber, a water storage chamber and a spray dust reduction chamber are arranged in sequence from front to back. The dust filtering chamber is connected to the spray dust reduction chamber through a connection channel arranged directly below the water storage chamber. A dust filter screen is arranged in the dust filtering chamber. At the front of the box body, a first electric telescopic rod and a second electric telescopic rod are arranged. The cylinder ends of the first electric telescopic rod and the second electric telescopic rod are both hinged to the box body. A dust suction hood is installed at the piston rod end of the first electric telescopic rod. A dust suction pipe is arranged between the dust suction hood and the dust filtering chamber. Both ends of the dust suction pipe are connected to the dust suction hood and the dust filtering chamber. The piston rod end of the second electric telescopic rod is hinged to the bottom of the cylinder end of the first electric telescopic rod. Cleaning ports, a water injection port and an exhaust fan are respectively installed on the box body opposite to the dust filtering chamber, the water storage chamber and the spray dust reduction chamber. A submersible pump is installed at the bottom of the water storage chamber. The water outlet end of the submersible pump is connected to a water pipe. The other end of the water pipe is connected to a spray rack installed in the spray dust reduction chamber.

[0007] As a further scheme of the utility model: The spray rack includes an annular pipe, branch pipes and atomizing nozzles. The annular pipe is connected to the water pipe. A number of branch pipes are installed at equal intervals in a ring shape on the inner side of the annular pipe. A number of atomizing nozzles are installed at the bottoms of the annular pipe and the branch pipes.

[0008] As a further scheme of the utility model: A mobile power supply is installed at the rear of the box body. A switch is installed on the mobile power supply.

[0009] As a further scheme of the utility model: An observation window is arranged on one side of the box body opposite to the water storage chamber.

[0010] As a further scheme of the utility model: Moving wheels are installed at the bottom of the box body.

[0011] As a further scheme of the utility model: A drain pipe connected to the spray dust reduction chamber is installed at the rear of the box body. A drain valve is installed on the drain pipe.

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

[0013] 1. Through the mutual cooperation of the dust suction hood, the dust suction pipe, the dust filtering chamber, the water storage chamber, the spray dust reduction chamber, the dust filter screen, the submersible pump, the spray rack and the exhaust fan, the utility model can suck the dust generated during tunneling construction into the box body through the dust suction hood and the dust suction pipe, and discharge it after passing through the dust filter screen and spray dust reduction in sequence. In this way, the dust removal can be more thorough, and at the same time, the range of spray dust reduction can be reduced, achieving the purpose of saving water.

[0014] 2. By providing the first electric telescopic rod and the second electric telescopic rod, the first electric telescopic rod can adjust the length of the dust suction hood from the box body, and the second electric telescopic rod can adjust the height of the dust suction hood. In this way, the dust suction hood can be adjusted according to the height of the tunnel drilling and blasting, resulting in better dust suction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic internal structure diagram of a dust removal device for tunnel drilling and blasting construction.

[0016] Figure 2 It is an overall external view of a dust removal device for tunnel drilling and blasting construction.

[0017] Figure 3 It is a dust removal device for tunnel drilling and blasting construction Figure 1 The upward view of the spray rack in it.

[0018] 1. Box body; 2. Moving wheels; 3. Dust filtering chamber; 4. Water storage chamber; 5. Spray dust reduction chamber; 6. Connection channel; 7. First electric telescopic rod; 8. Dust suction hood; 9. Second electric telescopic rod; 10. Dust suction pipe; 11. Dust filtering net; 12. Cleaning port; 13. Submersible pump; 14. Water pipe; 15. Spray rack; 1501. Ring pipe; 1502. Branch pipe; 1503. Atomizing nozzle; 16. Demister; 17. Exhaust fan; 18. Water injection port; 19. Observation window; 20. Direction handle; 21. Mobile power source; 22. Drain pipe; 23. Switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1-2 , in the embodiment of the present invention, a dust removal device for tunnel drilling and blasting construction includes a box body 1. The front part of the box body 1 is provided with a first electric telescopic rod 7 and a second electric telescopic rod 9. The cylinder ends of the first electric telescopic rod 7 and the second electric telescopic rod 9 are both hinged to the box body 1. The piston rod end of the first electric telescopic rod 7 is installed with a dust suction hood 8, and the piston rod end of the second electric telescopic rod 9 is hinged to the bottom of the cylinder end of the first electric telescopic rod 7.

[0021] Please refer to Figure 1-3, inside the box body 1, a dust filtering chamber 3, a water storage chamber 4, and a spray dust reduction chamber 5 are sequentially arranged from front to back. The dust filtering chamber 3 is connected to the spray dust reduction chamber 5 through a connection channel 6 arranged directly below the water storage chamber 4. A dust filter screen 11 is arranged in the dust filtering chamber 3. A dust suction pipe 10 is arranged between the dust suction hood 8 and the dust filtering chamber 3. Both ends of the dust suction pipe 10 are connected to the dust suction hood 8 and the dust filtering chamber 3. A cleaning port 12, a water injection port 18, and an exhaust fan 17 are respectively installed on the box body 1 opposite to the dust filtering chamber 3, the water storage chamber 4, and the spray dust reduction chamber 5. Sealing covers are installed on both the cleaning port 12 and the water injection port 18 to prevent dust from leaking out of the cleaning port 12 and prevent external dust and sundries from entering the water storage chamber 4 through the water injection port 18. A submersible pump 13 is installed at the bottom of the water storage chamber 4. The water outlet end of the submersible pump 13 is connected to a water pipe 14. The other end of the water pipe 14 is connected to a spray rack 15 installed in the spray dust reduction chamber 5. The spray rack 15 includes an annular pipe 1501, branch pipes 1502, and atomizing nozzles 1503. The annular pipe 1501 is connected to the water pipe 14. A number of branch pipes 1502 are installed at equal intervals in a ring shape on the inner side of the annular pipe 1501. A number of atomizing nozzles 1503 are installed at the bottom of both the annular pipe 1501 and the branch pipes 1502. An eliminator 16 is installed directly above the spray rack 15 in the spray dust reduction chamber 5. The eliminator 16 is used to remove water molecules in the air after dust reduction;

[0022] A mobile power source 21 is installed at the rear of the box body 1. A switch 23 is installed on the mobile power source 21. The switch 23 is electrically connected to the first electric telescopic rod 7, the second electric telescopic rod 9, and the submersible pump 13 respectively;

[0023] An observation window 19 is arranged on one side of the box body 1 opposite to the water storage chamber 4. The arrangement of the observation window 19 can facilitate personnel to observe the water level in the water storage chamber 4 and facilitate timely water replenishment;

[0024] Four mobile wheels 2 are installed at the bottom of the box body 1, namely two fixed wheels and two universal wheels. A direction handle 20 is installed at the rear of the box body 1. The direction handle 20 is used to control the moving direction of the device;

[0025] A drain pipe 22 connected to the spray dust reduction chamber 5 is installed at the rear of the box body 1. A drain valve is installed on the drain pipe 22.

[0026] The working principle of the present utility model is:

[0027] In use, personnel can push the box body 1 through the handheld direction handle 20 to move into the tunnel driven by the moving wheels 2. Then, adjust the dust suction hood 8 according to the position of tunnel drilling and blasting. When adjusting, the first electric telescopic rod 7 first extends to make the dust suction hood 8 close to the working face that needs to be drilled and blasted in the tunnel. Then, the second electric telescopic rod 9 extends to lift the dust suction hood 8 to a height close to the drilling and blasting point. The dust generated after drilling and blasting enters the dust suction hood 8 under the negative pressure suction of the exhaust fan 17, then enters the dust filtering chamber 3 through the dust suction pipe 10, and after being filtered by the dust filter screen 11, enters the spray dust reduction chamber 5 through the connection channel 6. At this time, the submersible pump 13 starts to pump the water in the water storage chamber 4 into the spray rack 15 through the water pipe 14, and sprays it out through the atomizing nozzles 1503 at the bottom of the spray rack 15 to fully contact the rising dust for dust reduction. The air after dust reduction is discharged through the demister 16 and the exhaust fan 17, and the generated sewage is discharged through the drain pipe 22. When it is necessary to clean the dust filter screen 11, just open the cleaning port 12 and take out the dust filter screen 11.

[0028] Although the present invention 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 invention shall be included within the protection scope of the present invention.

Claims

1. A dust removal device for tunnel construction by drill and blast method, comprising a box body (1), characterized in that: Inside the box body (1), a dust filtering chamber (3), a water storage chamber (4), and a spray dust reduction chamber (5) are arranged in sequence from front to back. The dust filtering chamber (3) is connected to the spray dust reduction chamber (5) through a connection channel (6) arranged directly below the water storage chamber (4). A dust filter screen (11) is arranged in the dust filtering chamber (3). At the front part of the box body (1), a first electric telescopic rod (7) and a second electric telescopic rod (9) are arranged. The cylinder ends of both the first electric telescopic rod (7) and the second electric telescopic rod (9) are hinged to the box body (1). A dust suction hood (8) is installed at the piston rod end of the first electric telescopic rod (7). A dust suction pipe (10) is arranged between the dust suction hood (8) and the dust filtering chamber (3). Both ends of the dust suction pipe (10) are connected to the dust suction hood (8) and the dust filtering chamber (3). The piston rod end of the second electric telescopic rod (9) is hinged to the bottom of the cylinder end of the first electric telescopic rod (7). Cleaning ports (12), a water injection port (18), and an exhaust fan (17) are respectively installed on the box body (1) opposite to the dust filtering chamber (3), the water storage chamber (4), and the spray dust reduction chamber (5). A submersible pump (13) is installed at the bottom of the water storage chamber (4). The water outlet end of the submersible pump (13) is connected to a water pipe (14). The other end of the water pipe (14) is connected to a spray rack (15) installed in the spray dust reduction chamber (5).

2. The dust removal device for tunnel drilling and blasting construction according to claim 1, characterized in that: The spray rack (15) includes an annular pipe (1501), branch pipes (1502), and atomizing nozzles (1503). The annular pipe (1501) is connected to the water pipe (14). A number of branch pipes (1502) are installed at equal intervals in a ring shape on the inner side of the annular pipe (1501). A number of atomizing nozzles (1503) are installed at the bottoms of both the annular pipe (1501) and the branch pipes (1502).

3. The dust removal device for tunnel drilling and blasting construction according to claim 1, characterized in that: A mobile power source (21) is installed at the rear part of the box body (1).

4. The dust removal device for tunnel drilling and blasting construction according to claim 1, wherein: An observation window (19) is arranged on one side of the box body (1) opposite to the water storage chamber (4).

5. The dust removal device for tunnel drilling and blasting construction according to claim 1, characterized in that: Mobile wheels (2) are installed at the bottom of the box body (1).

6. The dust removal device for tunnel drilling and blasting construction according to claim 1, characterized in that: A drain pipe (22) connected to the spray dust reduction chamber (5) is installed at the rear part of the box body (1). A drain valve is installed on the drain pipe (22).

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