Wet spraying machine for tunnel engineering
By introducing a multi-angle mixing device and a precision material conveying system into the wet spraying machine used in tunnel engineering, the problem of uneven spraying caused by material accumulation has been solved, achieving a more efficient spraying effect and construction quality.
Patent Information
- Application Number
- CN202520385788.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing wet spraying machines used in tunnel engineering tend to accumulate materials during the mixing process, leading to uneven spraying and affecting construction quality and efficiency.
A multi-angle mixing device and a precision material conveying system were designed, including a mixing tank, a mixing rod, a water pump, a conveying pipe and a corrugated pipe. Multi-angle mixing and precision conveying are achieved through the cooperation of a threaded rod and a threaded block driven by a second motor 19.
It achieves uniform mixing and efficient spraying of materials, improves spraying uniformity and quality, reduces the complexity of manual operation, and improves production efficiency.
Smart Images

Figure CN223707654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel engineering technology, specifically to a wet spraying machine for tunnel engineering. Background Technology
[0002] Wet shotcrete refers to the process of mixing cement, coarse and fine aggregates and water according to a certain ratio, and then using various types of wet shotcrete machines to transport the mixed concrete to the nozzle through a conveying hose. Liquid accelerator is added at the nozzle, and compressed air is used to supply energy, so that the concrete forms a material stream and is sprayed from the nozzle onto the surrounding rock surface. Shotcrete construction technology is widely used in the field of tunnel construction.
[0003] However, in the existing technology, the equipment lacks multi-angle stirring, which makes it impossible to effectively mix and stir the materials. Some materials tend to accumulate at the bottom and are difficult to stir, making it impossible for the equipment to spray wet evenly, thus affecting the uniformity and quality of the spraying. Therefore, this utility model proposes a wet spraying machine for tunnel engineering. Utility Model Content
[0004] The purpose of this invention is to provide a wet spraying machine for tunnel engineering. Through a mixing device, the material can be mixed more evenly and comprehensively at different angles and directions, effectively preventing some material from accumulating at the bottom and being difficult to mix, thus improving the mixing effect and making the equipment spray more evenly, effectively improving the uniformity and quality of spraying. In conjunction with a water pump, conveying pipe and corrugated pipe, the equipment achieves efficient and precise material conveying function, reducing the complexity of manual operation and improving production efficiency.
[0005] To achieve the above-mentioned utility model objectives, the technical solution provided by this utility model is as follows: a wet spraying machine for tunnel engineering, comprising a base plate, mixing tanks connected to the left and right sides above the base plate, a support frame connected to the outside of the mixing tanks, a mixing device connected to the top of the support frame, and an installation frame connected to the right side above the base plate.
[0006] Furthermore, the stirring device includes a mounting base, a first motor is provided above the mounting base, a threaded turntable is connected to the lower end of the support frame, a rotating nut is connected to the outer side of the threaded turntable, the output end of the first motor passes through the threaded turntable and is connected to a rotating rod, a movable rod is embedded on the left side of the rotating rod, and the upper end of the movable rod is connected to the rotating nut.
[0007] Furthermore, a fixed frame is connected inside the mixing tank, an adjustment box is connected above the fixed frame, a rotating block is connected inside the adjustment box, a movable rod passes through the rotating block and is connected to a stirring column, and a stirring rod is connected to the outside of the stirring column.
[0008] Furthermore, a fixed base is connected to the upper middle of the base plate, and a water pump is connected to the upper end of the fixed base. The output ends of the water pump on the left and right sides are respectively connected to conveying pipes. One end of the conveying pipe is connected to the mixing tank, and the other end is connected to a corrugated pipe.
[0009] Furthermore, a threaded rod is connected to the left side of the mounting bracket, and a threaded block is connected to the middle of the threaded rod. Slider blocks are connected to the left and right sides of the mounting bracket respectively. A spray box is connected to the front side of the mounting bracket. A second motor is connected to the top of the mounting bracket. The output end of the second motor passes through the mounting bracket and is connected to the threaded rod. The front ends of the two sets of sliders and threaded blocks are respectively connected to the spray box. One end of the corrugated pipe is connected to the spray box.
[0010] Furthermore, spray nozzles are evenly connected to the front side of the spray box.
[0011] Furthermore, a feed inlet is connected to the rear side of the mixing tank, and support legs are connected to all four sides of the bottom plate. The lower ends of the four sets of support legs are connected to casters.
[0012] Compared with the prior art, the advantages of this utility model are as follows: the stirring device can more evenly and comprehensively stir and mix materials at different angles and directions, effectively preventing some materials from accumulating at the bottom and being difficult to stir, thus improving the stirring effect and making the equipment spray wetting more uniform, effectively improving the uniformity and quality of spray wetting; through cooperation with water pump, conveying pipe and corrugated pipe, the equipment realizes efficient and precise material conveying function, reduces the complexity of manual operation and improves production efficiency. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the main structure of a wet spraying machine for tunnel engineering according to the present invention;
[0014] Appendix Figure 2 This is a partial rear view of a wet spraying machine for tunnel engineering according to the present invention;
[0015] Appendix Figure 3 This is a cross-sectional view of the mixing tank of a wet spraying machine for tunnel engineering according to this utility model;
[0016] Appendix Figure 4 This is a schematic diagram of the mixing device of a wet spraying machine for tunnel engineering according to the present invention;
[0017] Appendix Figure 5 This utility model Figure 3 A partial schematic diagram of A in the middle.
[0018] As shown in the figure: 1. Base plate; 2. Mixing tank; 3. Inlet; 4. Support frame; 5. Mixing device; 501. Mounting base; 502. First motor; 503. Threaded turntable; 504. Rotating nut; 505. Rotating rod; 506. Movable rod; 6. Fixed frame; 7. Adjusting box; 8. Rotating block; 9. Mixing column; 10. Mixing rod; 11. Fixed base; 12. Water pump; 13. Conveying pipe; 14. Corrugated pipe; 15. Mounting frame; 16. Threaded rod; 17. Slider; 18. Threaded block; 19. Second motor; 20. Spray box; 21. Nozzle; 22. Support leg; 23. Casters. Detailed Implementation
[0019] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.
[0020] Combined with appendix Figure 1 To be continued Figure 5 A wet spraying machine for tunnel engineering includes a base plate 1, a mixing tank 2 connected to the left and right sides above the base plate 1, a support frame 4 connected to the outside of the mixing tank 2, a mixing device 5 connected above the support frame 4, and an installation frame 15 connected to the right side above the base plate 1.
[0021] Furthermore, the stirring device 5 includes a mounting base 501, a first motor 502 is provided above the mounting base 501, a threaded turntable 503 is connected to the lower end of the support frame 4, a rotating nut 504 is connected to the outer side of the threaded turntable 503, the output end of the first motor 502 passes through the threaded turntable 503 and is connected to a rotating rod 505, a movable rod 506 is embedded on the left side of the rotating rod 505, and the upper end of the movable rod 506 is connected to the rotating nut 504. Furthermore, a fixed frame 6 is connected inside the mixing tank 2, and an adjustment box 7 is connected above the fixed frame 6. A rotating block 8 is connected inside the adjustment box 7. The movable rod 506 passes through the rotating block 8 and is connected to the stirring column 9. A stirring rod 10 is connected to the outside of the stirring column 9. The first motor 502 drives the rotating rod 505 to rotate, which in turn drives the movable rod 506 to rotate. At the same time, the rotating nut 505 above the movable rod 506 rotates on the threaded turntable 503, so that the movable rod 506 rotates in a circular motion and rotates on its own axis, which in turn drives the stirring column 9 to rotate. This allows the stirring rod 10 to perform multi-angle stirring inside the mixing tank 2, improving the stirring efficiency.
[0022] Furthermore, a fixed base 11 is connected to the upper middle of the base plate 1. A water pump 12 is connected to the upper end of the fixed base 11. The output ends of the water pump 12 on the left and right sides are respectively connected to conveying pipes 13. One end of the conveying pipe 13 is connected to the mixing tank 2, and the other end is connected to a corrugated pipe 14. The water pump 12 conveys the mixed material through the conveying pipe 13 into the corrugated pipe 14, and then through the corrugated pipe 14 into the spraying box 20.
[0023] Furthermore, a threaded rod 16 is connected to the left side of the mounting bracket 15, and a threaded block 18 is connected to the middle of the threaded rod 16. Slider blocks 17 are connected to the left and right sides of the mounting bracket 15 respectively. A spray box 20 is connected to the front side of the mounting bracket 15. A second motor 19 is connected to the top of the mounting bracket 15. The output end of the second motor 19 passes through the mounting bracket 15 and is connected to the threaded rod 16. The front ends of the two sets of sliders 17 and threaded blocks 18 are respectively connected to the spray box 20. One end of the corrugated pipe 14 is connected to the spray box 20. The second motor 19 drives the threaded rod 16 to rotate, which in turn drives the threaded block 18 to move on the threaded rod 16, which in turn drives the spray box 20 to adjust the spraying height and improve the spraying range.
[0024] Furthermore, spray nozzles 21 are evenly connected to the front side of the spray box 20.
[0025] Furthermore, the mixing tank 2 is connected to the rear side of the inlet 3, and the bottom plate 1 is connected to the four sides of the bottom plate 1. The lower ends of the four sets of support legs 22 are connected to casters 23.
[0026] The specific implementation of this utility model is as follows: First, the material is added into the mixing tank 2 through the inlet 3. The first motor 502 drives the rotating rod 505 to rotate, which in turn drives the movable rod 506 to rotate. At the same time, the rotating nut 505 above the movable rod 506 rotates on the threaded turntable 503, causing the movable rod 506 to rotate circumferentially and rotate on its own axis, which in turn drives the mixing column 9 to rotate. This allows the mixing rod 10 to perform multi-angle mixing in the mixing tank 2, improving mixing efficiency and effectively preventing some material from accumulating at the bottom and being difficult to mix. This improves the mixing effect and makes the equipment spraying more evenly. The water pump 12 transports the mixed material through the conveying pipe 13 to the inside of the corrugated pipe 14, and then through the corrugated pipe 14 to the inside of the spray box 20, where it is sprayed out through the nozzle 21. At the same time, the second motor 19 drives the threaded rod 16 to rotate, which in turn drives the threaded block 18 to move on the threaded rod 16, which in turn drives the spray box 20 to adjust the spraying height, thus increasing the spraying range.
[0027] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.
Claims
1. A wet sprayer for tunnel engineering, comprising a base plate (1), characterized in that, The bottom plate (1) is connected with a stirring tank (2) above and left and right, the stirring tank (2) is connected with a support frame (4) outside, the support frame (4) is connected with a stirring device (5) above, the bottom plate (1) is connected with a mounting frame (15) above right.
2. A wet jet machine for tunnel engineering according to claim 1, characterized in that The stirring device (5) comprises a mounting seat (501), the mounting seat (501) is provided with a first motor (502) above, the support frame (4) is connected with a threaded turntable (503) at the lower end, the threaded turntable (503) is connected with a rotating nut (504) outside, the first motor (502) is connected with a rotating rod (505) at the output end penetrating the threaded turntable (503), the rotating rod (505) is embedded with a movable rod (506) left side, the movable rod (506) is connected on the rotating nut (504) at the upper end.
3. A wet jet machine for tunnel engineering according to claim 1 or 2, characterized in that The stirring tank (2) is connected with a fixed frame (6) inside, the fixed frame (6) is connected with an adjusting box (7) above, the adjusting box (7) is connected with a rotating block (8) inside, the movable rod (506) is connected with a stirring column (9) penetrating the rotating block (8), the stirring column (9) is connected with a stirring rod (10) outside.
4. A wet jet machine for tunnel engineering according to claim 1, characterized in that The bottom plate (1) is connected with a fixed seat (11) above in the middle, the fixed seat (11) is connected with a water pump (12) at the upper end, the water pump (12) is connected with a conveying pipe (13) at the output end left and right respectively, one end of the conveying pipe (13) is connected on the stirring tank (2), the other end is connected with a corrugated pipe (14).
5. A wet jet machine for tunnel engineering according to claim 1 or 4, characterized in that The mounting frame (15) is connected with a threaded rod (16) left side, the threaded rod (16) is connected with a threaded block (18) in the middle, the mounting frame (15) is connected with a sliding block (17) left and right respectively, the mounting frame (15) is connected with a spraying box (20) front side, the mounting frame (15) is connected with a second motor (19) top end, the second motor (19) is connected with the threaded rod (16) penetrating the mounting frame (15) at the output end, two groups of the sliding block (17) and the threaded block (18) are connected on the spraying box (20) at the front end respectively, one end of the corrugated pipe (14) is connected on the spraying box (20).
6. A wet jet machine for tunnel engineering according to claim 5, characterized in that The spraying box (20) is connected with a spray head (21) uniformly front side.
7. A wet jet machine for tunnel engineering according to claim 1, characterized in that The stirring tank (2) is connected with a feeding port (3) rear side, the bottom plate (1) is connected with a support leg (22) below all around, four groups of the support leg (22) are connected with a universal wheel (23) at the lower end.