Tunnel water mist dust removal spraying device and system used for being combined with tunnel ventilation belt

Abstract

The utility model provides a tunnel water mist dust removal spraying device and system used for being combined with a tunnel ventilation zone, the tunnel water mist dust removal spraying device is provided with a water flow injection port (1), a water mist outer ring (2), a water mist first inner ring (3), a water mist second inner ring (4), water mist nozzles (5) and a connecting pipe (6), the water flow injection port (1) is communicated with the water flow outer ring (2), and high-pressure water flow is injected into the water flow outer ring (2) from the water flow injection port (1); the water mist outer ring (2) is directly connected with the water mist first inner ring (3) and the water mist second inner ring (4) through connecting pipes (6) to share high-pressure water flow, water mist nozzles (5) are installed on the water mist outer ring (2), the water mist first inner ring (3) and the water mist second inner ring (4), and after the high-pressure water flow enters the water mist rings, water mist is sprayed out through the water mist nozzles (5). The high-pressure water flow generating device is installed near the secondary lining trolley and continuously supplies high-pressure water flow to the spraying device above the high-pressure water flow generating device, a water flow pipe and the water mist spraying device are connected through three six-way quick connectors, and disassembly, assembly and replacement are convenient. The whole spraying device is connected with the wind belt conveniently and quickly, and the spraying device is directly hoisted on a vault after being installed for dust removal.

Description

Technical Field

[0001] The utility model relates to the field of tunnel water mist dust removal, in particular to a tunnel water mist dust removal spraying device and a system which are used for combining with a tunnel ventilation belt. Background Art

[0002] Dust (mineral dust, rock dust) is fine particles of various rocks and soils generated during production and construction and can be suspended in the air for a long time. The size of dust is called particle size, that is, the average diameter of dust particles, usually expressed in microns (μm). After dust particles larger than 5μm are inhaled into the human respiratory organs, most of them can be discharged from the body; dust smaller than 5μm can reach and settle in the alveoli, and this part of dust is called respirable dust. The length of time dust flies in the air is related to the size, mass and shape of dust particles, as well as the temperature and wind speed of the air. Dust can be generated in each operation process and link in tunnel construction. Drilling, blasting, loading and unloading slag, transportation of thick and thin pipe materials, concrete mixing, shotcrete and other operations in tunnel construction generate a lot of dust, which can cause pneumoconiosis and silicosis, which is harmful to human health; in addition, flammable and explosive dust can also cause explosion accidents. Therefore, dust prevention work must be done well. The number of deaths from this occupational disease is about 2.5 times that of work-related injuries, which is shocking.

[0003] At present, the methods of dust reduction in tunnels are mainly to adopt the method of pressure-in or extraction ventilation, and some use dust reduction vehicles to reduce dust. The disadvantage of these methods is that it is difficult to control the flow direction of dust, which is easy to spread in the tunnel, affecting the working environment and seriously affecting the health of workers, making it difficult to achieve the desired effect. Conventional water mist dust removal is also used in tunnels, but the coverage is small and cannot meet the requirements of tunnel dust reduction.

[0004] Using tunnel wind belts instead of conventional water mist fans for dust removal can increase the dust reduction coverage and enhance the dust removal efficiency.

[0005] This device is designed to solve the problems of conventional water mist dust removal, insufficient air volume from the built-in fan resulting in small coverage and low dust removal efficiency under this background. Utility Model Content

[0006] The utility model provides a tunnel water mist dust removal spraying device and system for combining with a tunnel ventilation belt. A water mist spraying port is specially made to match the specifications of the wind tube, and the high-pressure water pump is pressurized and directly connected to the spraying device through a pipeline to perform dust removal. This design can not only greatly reduce the volume of the tunnel water mist dust removal equipment, but also use the strong wind force of the fan to cover the long distance, so that the dust removal efficiency is higher. At the same time, it avoids the frequent movement of the dust removal equipment and saves manpower.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: A tunnel water mist dust removal spraying device for use in combination with a tunnel ventilation belt, characterized in that; the device has a water flow injection port (1), a water mist outer ring (2), a water mist first inner ring (3), a water mist second inner ring (4), a water mist nozzle (5), and a connecting pipe (6); the water flow injection port (1) is connected to the water flow outer ring (2); a high-pressure water flow is injected into the water flow outer ring (2) from the water flow injection port (1); the water mist outer ring (2) and the water mist first inner ring (3) and the water mist second inner ring (4) are directly connected to share the high-pressure water flow through the connecting pipe (6); the water mist outer ring (2), the water mist first inner ring (3), and the water mist second inner ring (4) are installed with a water mist nozzle (5); after the high-pressure water flow enters the water mist ring, water mist is sprayed out through the water mist nozzle (5).

[0008] The tunnel water mist dust removal spraying device used in combination with a tunnel ventilation belt according to the present application is characterized in that a hanging ring (7) is installed on the outer ring (2) of the water flow.

[0009] A tunnel water mist dust removal spraying system for use in combination with a tunnel ventilation belt, characterized in that it comprises a tunnel water mist dust removal spraying device (8), a tunnel ventilation belt (9), and a high-pressure water flow generating device (10); the high-pressure water flow generating device (10) is arranged at a location close to the wind belt opening and close to a water source and power supply, the high-pressure water flow generating device (10) is connected to the tunnel water mist dust removal spraying device (8), and is generally arranged near the secondary lining during tunnel construction. The high-pressure water flow generating device (10) generates a high-pressure water flow required for dust removal. The high-pressure water flow is injected into the tunnel water mist dust removal spraying device (8), and the high-pressure water flow is dispersed into water mist and sprayed into the air. The water mist is blown away to a distance by the strong wind in the tunnel ventilation belt (9), thereby performing dust removal.

[0010] Tunnel wind belts have various sizes according to the construction conditions, with a diameter ranging from 150mm to 1500mm; single lengths of 1m-30m do not require joints, and tunnel wind ducts and ventilators can be easily and quickly connected. Tunnel wind ducts are equipped with a hanging ring every 1 meter or so, which can conveniently fix the air duct in the required position. In order to match the size of the wind belt, a circular ring with a size of 150mm-1500mm is designed to match the wind belt. This ring is made of 304 stainless steel to prevent rust, with a pipe diameter of 25mm. Three water inlets are set on it to effectively ensure sufficient supply of water mist. A special stainless steel nozzle is set on it, which has a dispersion effect. The diameter is 1.2mm, and the two nozzles are directly set at an arc interval of 5cm. At the same time, in order to ensure sufficient spraying, two inner rings are also set, and the rings are connected by three stainless steel pipes. Nozzles are also set on it, and the two nozzles are also set at an arc interval of 5cm. The water mist main unit is installed near the secondary lining trolley, which continuously supplies high-pressure water flow to the upper spraying device. The water pipe and the water mist spraying device are connected by three 6-point quick connectors, which are convenient for disassembly and replacement. The entire spraying device and the wind belt are conveniently and quickly connected. After installation, it is directly hoisted on the arch for dust removal.

[0011] The beneficial effects of the utility model are as follows: the utility model is a tunnel water mist dust removal spraying device for combining with a tunnel ventilation belt. By combining with the existing equipment at the construction site, the dust removal range of the water mist is increased, the dust removal efficiency is improved, and the volume of the dust removal equipment is reduced. At the same time, this design can reduce the power consumption of the dust removal equipment itself. A tunnel water mist dust removal spraying device for combining with a tunnel ventilation belt, as a result, requires the use of materials that are not easy to rust. Because the nozzle orifice size is too small, a water quality filter device needs to be added to the high-pressure water flow generating device to avoid blocking the outlet. Because the tunnel space is too large, in order to ensure the dust reduction effect, three high-pressure water flow injection ports are set on the spraying device to ensure the supply of water mist. In order to match the wind belt, the tunnel water mist dust removal spraying device adopts a quick connection method that matches the wind belt, which is convenient for disassembly and assembly. Tunnel wind belts have a variety of sizes according to the construction conditions, and the size of the tunnel water mist spraying device also needs to be designed to match them. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural diagram of a tunnel water mist dust removal spraying device combined with a tunnel ventilation belt according to the utility model.

[0014] Figure 2 The invention is an embodiment of a tunnel water mist dust removal spraying device combined with a tunnel ventilation belt.

[0015] In the figure, 1. water flow inlet, 2. water mist outer ring, 3. water mist first inner ring, 4. water mist second inner ring, 5. water mist nozzle, 6. connecting pipe, 7. lifting ring, 8. tunnel water mist dust removal spraying device, 9. tunnel ventilation belt, 10. high-pressure water flow generating device. DETAILED DESCRIPTION

[0016] The present application provides a tunnel water mist dust removal spraying device for use in combination with a tunnel ventilation belt, such as Figure 1 As shown; the device comprises a water flow injection port 1, a water mist outer ring 2, a water mist first inner ring 3, a water mist second inner ring 4, a water mist nozzle 5, and a connecting pipe 6. The water flow injection port 1 is connected with the water flow outer ring 2, and a high-pressure water flow is injected into the water flow outer ring 2 from the water flow injection port 1, while the water mist outer ring 2 is directly connected with the water mist first inner ring 3 and the water mist second inner ring 4 by a connecting pipe 6 to share the high-pressure water flow. The water mist outer ring 2, the water mist first inner ring 3 and the water mist second inner ring 4 are equipped with a water mist nozzle 5, and after the high-pressure water flow enters the water mist ring, water mist is sprayed out through the water mist nozzle 5.

[0017] According to the tunnel water mist dust removal spraying device used in combination with a tunnel ventilation belt described in the present application, a hanging ring 7 is installed on the water flow outer ring 2.

[0018] A tunnel water mist dust removal spraying system for use in combination with a tunnel ventilation belt; comprising a tunnel water mist dust removal spraying device 8, a tunnel ventilation belt 9, and a high-pressure water flow generating device 10; the high-pressure water flow generating device 10 is arranged at a place close to the wind belt opening and close to a water source and power supply, the high-pressure water flow generating device 10 is connected to the tunnel water mist dust removal spraying device 8, and is generally arranged at the secondary lining attachment during tunnel construction. The high-pressure water flow generating device 10 generates the high-pressure water flow required for dust removal. After being injected into the tunnel water mist dust removal spraying device 8, the high-pressure water flow is dispersed into water mist and sprayed into the air, and the water mist is blown away by the strong wind in the tunnel ventilation belt 9 to perform dust removal.

[0019] Figure 1 The middle is a structural diagram of a tunnel water mist dust removal spraying device combined with a tunnel ventilation belt. In the tunnel water mist dust removal spraying device combined with a tunnel ventilation belt, high-pressure water flow is injected into the water flow outer ring 2 from the water flow injection port 1, and the water mist outer ring and the water mist first inner ring 3 and the water mist second inner ring 4 are directly connected with a connecting pipe 6 to share the high-pressure water flow. After the high-pressure water flow enters the water mist ring, water mist is sprayed out through the water mist nozzle 5. In order to match the wind belt, the tunnel water mist dust removal spraying device 8 adopts a quick connection method that matches the wind belt, and is fixed to the arch by a lifting ring 7 for easy disassembly and assembly.

[0020] Figure 2In the embodiment, the high-pressure water flow generating device 10 is arranged near the wind belt opening and near the water source and power supply, and is generally arranged near the secondary lining during tunnel construction. The high-pressure water flow generating device 10 generates the high-pressure water flow required for dust removal. The high-pressure water flow is injected into the tunnel water mist dust removal spraying device 8, and the high-pressure water flow is dispersed into water mist and sprayed into the air. The strong wind in the tunnel ventilation belt 9 blows the water mist away to perform dust removal.

Claims

1. A tunnel water mist dust removal spraying device for use in combination with a tunnel ventilation belt, characterized in that; The device comprises a water flow injection port (1), a water mist outer ring (2), a first water mist inner ring (3), a second water mist inner ring (4), a water mist nozzle (5), and a connecting pipe (6). The water flow injection port (1) is connected to the water flow outer ring (2), and a high-pressure water flow is injected into the water flow outer ring (2) from the water flow injection port (1). The water mist outer ring (2) and the first water mist inner ring (3) and the second water mist inner ring (4) are directly connected to share the high-pressure water flow through the connecting pipe (6). The water mist outer ring (2), the first water mist inner ring (3), and the second water mist inner ring (4) are equipped with water mist nozzles (5). After the high-pressure water flow enters the water mist ring, water mist is sprayed out through the water mist nozzles (5).

2. The tunnel water mist dust removal spraying device for use in combination with a tunnel ventilation belt according to claim 1, characterized in that; A lifting ring (7) is installed on the water flow outer ring (2).

3. A tunnel water mist dust removal spraying system for use in conjunction with a tunnel ventilation belt, characterized in that; The invention comprises a tunnel water mist dust removal spraying device (8), a tunnel ventilation belt (9), and a high-pressure water flow generating device (10); the high-pressure water flow generating device (10) is arranged at a location close to the ventilation belt opening and close to a water source and power supply, the high-pressure water flow generating device (10) is connected to the tunnel water mist dust removal spraying device (8), and is generally arranged near the secondary lining during tunnel construction; the high-pressure water flow generating device (10) generates a high-pressure water flow required for dust removal, which is injected into the tunnel water mist dust removal spraying device (8); the high-pressure water flow is then dispersed into water mist and sprayed into the air; the water mist is blown away to a distance by the strong wind in the tunnel ventilation belt (9), thereby performing dust removal.

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