Spray gun of concrete wet spraying machine for tunnel construction

Abstract

The utility model relates to a concrete wet spraying machine spray gun for tunnel construction, which comprises a spray gun, a turbulent flow assembly I and a turbulent flow assembly II, the spray gun comprises a nozzle and a connecting pipe, the nozzle is connected with the connecting pipe through a flange, the turbulent flow assembly II is rotatably connected on the turbulent flow assembly I, and the turbulent flow assembly I comprises a T-shaped connecting sleeve, an air nozzle I and a high-pressure air pipe. The T-shaped connecting sleeve is arranged at the position, close to the flange, of the connecting pipe, a first airflow channel is formed in the T-shaped connecting sleeve, the first air nozzle is arranged on the T-shaped connecting sleeve, the first air nozzle is communicated with the first airflow channel, and the high-pressure air pipe is communicated with the first airflow channel in the T-shaped connecting sleeve. High-speed air flow is conveyed into the first air flow channel of the T-shaped connecting sleeve through the high-pressure air pipe and then sprayed out of the first air nozzles, the six sets of first air nozzles are arranged, sputtered excess materials and dust generated by sputtering can be blown to the side away from workers, and the operation environment of the workers is guaranteed to a great extent.

Description

Technical Field

[0001] The utility model relates to the field of concrete wet shotcreters, in particular to a spray gun for a concrete wet shotcreter used in tunnel construction. Background Technique

[0002] A tunnel wet shotcreter is a device specifically used for spraying concrete in tunnel construction. It uses cement slurry as the spraying material and sprays the concrete onto the tunnel wall or roof to form a uniform lining.

[0003] When the existing tunnel wet shotcreter is working, workers usually hold the nozzle by hand and spray the tunnel wall. Since the tunnel is a semi-closed environment with poor ventilation, when the spray gun sprays concrete onto the tunnel wall, a lot of redundant materials will inevitably be sputtered. Especially in a non-ventilated environment, the dust stirred up during sputtering will cause harm to the health of workers. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a spray gun for a concrete wet shotcreter used in tunnel construction.

[0005] The spray gun for a concrete wet shotcreter used in tunnel construction provided by the utility model adopts the following technical scheme:

[0006] A spray gun for a concrete wet shotcreter used in tunnel construction includes a spray gun, a flow disturbance component one and a flow disturbance component two. The spray gun includes a nozzle and a connecting pipe. The nozzle and the connecting pipe are connected by a flange. The flow disturbance component one is arranged at the connecting pipe near the flange, and the flow disturbance component two is rotatably connected to the flow disturbance component one.

[0007] Optionally, the flow disturbance component one includes a T-shaped connecting sleeve, a jet nozzle one and a high-pressure air pipe. The T-shaped connecting sleeve is arranged at the connecting pipe near the flange. An air flow channel one is opened in the T-shaped connecting sleeve. The jet nozzle one is arranged on the T-shaped connecting sleeve, and the jet nozzle one is communicated with the air flow channel one. The high-pressure air pipe is communicated with the air flow channel one in the T-shaped connecting sleeve.

[0008] Optionally, 6 groups of the jet nozzles one are provided, and the 6 groups of the jet nozzles one are annularly arrayed along the axis of the T-shaped connecting sleeve.

[0009] Optionally, the flow disturbance component two includes bearings, a flow disturbance ring and jet nozzles two. Two groups of the bearings are provided. The flow disturbance ring is rotatably connected to the T-shaped connecting sleeve through the bearings. An air flow channel two is arranged in the flow disturbance ring. The air flow channel two is communicated with the air flow channel one. The jet nozzles two are arranged on the outer wall of the flow disturbance ring, and the jet nozzles two are communicated with the air flow channel.

[0010] Optionally, there are 8 sets of the second jet nozzles, and the 8 sets of the second jet nozzles are arranged in an annular array.

[0011] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0012] 1. Through an externally connected high-pressure air pump, high-speed air flow is transported through a high-pressure air pipe to the air flow channel 1 of the T-shaped connecting sleeve, and then ejected from the first jet nozzle. There are 6 sets of the first jet nozzles, which can blow the remaining materials and dust generated by sputtering away from the worker, greatly protecting the working environment of the worker.

[0013] 2. When the high-pressure air pump supplies air to the first flow disturbing component, since the air flow channel 1 on the T-shaped connecting sleeve is connected to the air flow channel 2 on the flow disturbing ring, the high-pressure gas will also pass through the air flow channel 2 and be ejected from the second jet nozzle. The flow disturbing ring and the T-shaped connecting sleeve are rotationally connected through a bearing. Therefore, when the air flow passes through the flow disturbing ring, it will push the flow disturbing ring to rotate. The gas ejected from the second jet nozzle will form an air wall, thereby protecting the worker from the harm of remaining material sputtering or dust. Description of the Drawings

[0014] Figure 1 is a cross-sectional view of a spray gun of a wet concrete spraying machine for tunnel construction.

[0015] Figure 2 is a schematic diagram for showing the structures of the first flow disturbing component and the second flow disturbing component.

[0016] Figure 3 is an exploded view for showing the structures of the first flow disturbing component and the second flow disturbing component.

[0017] Description of the reference numerals: 1. Spray gun; 11. Nozzle; 12. Connecting pipe; 2. First flow disturbing component; 21. T-shaped connecting sleeve; 22. First jet nozzle; 23. High-pressure air pipe; 24. Air flow channel 1; 3. Second flow disturbing component; 31. Flow disturbing ring; 32. Bearing; 33. Second jet nozzle; 34. Air flow channel 2; 4. Flange. Detailed 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] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] In addition, the meaning of "a number of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0021] An embodiment of the present utility model discloses a concrete wet shotcreting machine gun for tunnel construction. Refer to Figures 1-3 , a concrete wet shotcreting machine gun for tunnel construction includes a gun 1, a first flow disturbing component 2 and a second flow disturbing component 3. The gun 1 includes a nozzle 11 and a connecting pipe 12. The nozzle 11 and the connecting pipe 12 are connected by a flange 4. The first flow disturbing component 2 is arranged at the connecting pipe 12 near the flange 4. The second flow disturbing component 3 is rotatably connected to the first flow disturbing component 2. The first flow disturbing component 2 includes a T-shaped connecting sleeve 21, a first air jet nozzle 22, and a high-pressure air pipe 23. The T-shaped connecting sleeve 21 is arranged at the connecting pipe 12 near the flange 4. An air flow channel 24 is opened in the T-shaped connecting sleeve 21. The first air jet nozzle 22 is arranged on the T-shaped connecting sleeve 21. The first air jet nozzle 22 communicates with the air flow channel 24. The high-pressure air pipe 23 communicates with the air flow channel 24 in the T-shaped connecting sleeve 21. The high-pressure air pipe 23 is externally connected to a high-pressure air pump. There are 6 groups of the first air jet nozzles 22. The 6 groups of the first air jet nozzles 22 are annularly arrayed along the axis of the T-shaped connecting sleeve 21. Through this design, a circle of annularly arrayed first air jet nozzles 22 is arranged at the nozzle 11 of the gun 1. Through the externally connected high-pressure air pump, high-speed air flow is transported into the air flow channel 24 of the T-shaped connecting sleeve 21 through the high-pressure air pipe 23 and then ejected from the first air jet nozzles 22. There are 6 groups of the first air jet nozzles 22, which can blow the splashed remaining materials and the dust generated by the splash to the side away from the workers, greatly protecting the operation environment of the workers.

[0022] The spoiler component two 3 includes a bearing 32, a spoiler ring 31 and a second jet nozzle 33. There are two sets of bearings 32. The spoiler ring is rotatably connected to the T-shaped connecting sleeve 21 through the bearing 32. An air flow channel two 34 is arranged inside the spoiler ring 31. The air flow channel two 34 is communicated with the air flow channel one 24. The second jet nozzle 33 is arranged on the outer wall of the spoiler ring 31. The second jet nozzle 33 is communicated with the air flow channel. Through this design, when the high-pressure air pump supplies air to the spoiler component one 2, since the air flow channel one 24 on the T-shaped connecting sleeve 21 and the air flow channel two 34 on the spoiler ring 31 are communicated, the high-pressure gas will also pass through the air flow channel two 34 and be ejected from the second jet nozzle 33. The spoiler ring 31 and the T-shaped connecting sleeve 21 are rotatably connected through the bearing 32. Therefore, when the air flow passes through the spoiler ring 31, it will push the spoiler ring to rotate. The gas ejected from the second jet nozzle 33 will form an air wall, thus protecting the workers from the harm of residual material sputtering or dust.

[0023] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A concrete wet spraying machine spray gun for tunnel construction, characterized by: The invention comprises a spray gun (1), a first spoiler assembly (2) and a second spoiler assembly (3), wherein the spray gun (1) comprises a nozzle (11) and a connecting pipe (12), wherein the nozzle (11) and the connecting pipe (12) are connected via a flange (4), the first spoiler assembly (2) is arranged on the connecting pipe (12) near the flange (4), and the second spoiler assembly (3) is rotatably connected to the first spoiler assembly (2).

2. The concrete wet spraying machine spray gun for tunnel construction according to claim 1, characterized in that: The spoiler component (2) comprises a T-shaped connecting sleeve (21), an air nozzle (22), and a high-pressure air pipe (23). The T-shaped connecting sleeve (21) is arranged near the flange (4) of the connecting pipe (12). An air flow channel (24) is provided in the T-shaped connecting sleeve (21). The air nozzle (22) is arranged on the T-shaped connecting sleeve (21). The air nozzle (22) is communicated with the air flow channel (24). The high-pressure air pipe (23) is communicated with the air flow channel (24) in the T-shaped connecting sleeve (21).

3. The concrete wet shotcreting gun for tunnel construction according to claim 2, characterized in that: The air jet nozzles (22) are provided in 6 groups, and the 6 groups of air jet nozzles (22) are arranged in a circular array along the axis of the T-shaped connecting sleeve (21).

4. The concrete wet spraying machine spray gun for tunnel construction according to claim 2, characterized in that: The second spoiler assembly (3) includes a bearing (32), a spoiler ring (31) and a second air jet nozzle (33). The bearing (32) is provided in two groups. The spoiler is rotatably connected to the T-shaped connecting sleeve (21) through the bearing (32). The spoiler ring (31) is provided with a second air flow channel (34). The second air flow channel (34) is communicated with the first air flow channel (24). The second air jet nozzle (33) is provided on the outer wall of the spoiler ring (31). The second air jet nozzle (33) is communicated with the air flow channel.

5. The concrete wet spraying machine spray gun for tunnel construction according to claim 4, characterized in that: The second air nozzle (33) is provided with 8 groups, and the 8 groups of the second air nozzle (33) are arranged in a circular array.

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