Uniform wet spraying mechanism for concrete building surface

Abstract

The utility model discloses a uniform wet spraying mechanism for the surface of a concrete building, which belongs to the technical field of building construction and comprises a concrete wet spraying machine, universal wheels, a trough, a guide chute, a slurry pump, an air compressor, a support frame, a screw rod sliding rail, a sliding support, a concrete spray gun and a nozzle. A supporting frame is fixedly installed on the side of the concrete wet spraying machine, a lead screw sliding rail is fixedly installed on the side of the interior of the supporting frame, and a sliding support is slidably arranged on the side of the lead screw sliding rail through a sliding block. After a limiting block is driven to slide out of a sliding groove B to loosen a concrete spraying gun, an adjusting disc is pushed to drive the concrete spraying gun to rotate through a bearing, after the concrete spraying gun is adjusted to a proper wet spraying angle, the adjusting disc is loosened, a damping telescopic rod and an outer side spring are contracted, the limiting block slides into the inner side of the opposite sliding groove B, and the concrete spraying gun is limited and fixed; and a worker can conveniently and freely adjust the angle of the concrete spray gun to carry out uniform wet spraying treatment on the building wall surfaces with different angles.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a uniform wet spraying mechanism for a concrete building surface. Background Art

[0002] Building construction is to ensure the structural safety and functional perfection of the building through detailed planning and design, and start the foundation construction according to the design drawings and construction plan, including foundation treatment, piling, etc. After the foundation construction is completed, the main structure will be built, including the pouring of reinforced concrete and the construction of the frame.

[0003] Among them, it was found through searching that the application number is CN202223299006.2, a spray gun for wet concrete spraying machine, the spray gun for wet concrete spraying machine has a stirring mechanism arranged through the upper end of the spray gun body, when the concrete passes through the spray gun body, the rotating motor drives the rotating shaft to rotate, and then the rotating shaft drives the stirring rod placed in the spray gun body to rotate, so that the concrete is fully integrated with the air and the coagulant, and then the concrete passes through the holes on the anti-backflow plate fixedly installed inside the spray gun body, and then the baffle connected to the U-shaped block can be rotated to prevent the concrete from flowing back; wherein, the shortcomings are as follows:

[0004] When the staff uses the spray gun of this concrete wet spraying machine to carry out concrete wet spraying treatment on the building wall, when the concrete, high-pressure gas and coagulant pass through the spray gun body, the rotating motor drives the rotating shaft to rotate, and then the concrete, high-pressure gas and coagulant can be fully mixed and sprayed through the stirring rods evenly distributed on the rotating shaft. When the concrete, high-pressure gas and coagulant are mixed and sprayed by the stirring rod, since the concrete is gathered together but not evenly dispersed, it will be easy to make the concrete sprayed on the wall uneven and affect the wet spraying effect on the wall. Utility Model Content

[0005] The utility model aims to provide a uniform wet spraying mechanism for concrete building surfaces in order to solve the problem of poor wet spraying uniformity of the spray gun used in the above-mentioned concrete wet spraying machine.

[0006] The technical solution adopted by the utility model is as follows: a mechanism for uniform wet spraying of concrete building surfaces, comprising a concrete wet spraying machine, universal wheels, a material trough, a material guide trough, a mud pump, an air compressor, a support frame, a screw guide rail, a sliding bracket, a concrete spray gun and a nozzle, wherein universal wheels are installed at the four corners below the concrete wet spraying machine, a support frame is fixedly installed on the side of the concrete wet spraying machine, a screw guide rail is fixedly installed on the side of the support frame, a sliding bracket is slidingly arranged on the side of the screw guide rail through a slider, and the sliding bracket is slidingly arranged above the inside of the support frame, a concrete spray gun is rotatably arranged in front of the sliding bracket through a bearing, a material trough is embedded above the concrete wet spraying machine, and the material guide trough is embedded above the concrete wet spraying machine. A material guide trough is embedded below the inner wall of the trough, a mud pump is provided below the concrete wet spraying machine, and the material guide trough, the mud pump and the rear end of the concrete spraying gun are connected by a slurry guide hose, an air compressor is provided on the side of the concrete wet spraying machine, and the air compressor and the top of the concrete spraying gun are connected by an air guide pipe, a nozzle is rotatably provided on the side of the concrete spraying gun through a bearing, an angle-adjustable wet spraying mechanism for conveniently adjusting the angle for wet spraying treatment of building walls at different angles is provided on the outside of the concrete spraying gun, a rotating dispersing mechanism for evenly dispersing the sprayed concrete, and a uniform wet spraying mechanism for evenly guiding the sprayed concrete for wet spraying are respectively provided inside the nozzle.

[0007] Among them, the rotating dispersion mechanism is composed of a slide groove B, an electric roller A and a dispersion frame. The outer wall of the concrete spray gun is embedded with a slide groove B near the inside of the nozzle. The electric roller A is rotatably arranged around the inner circle of the nozzle through bearings, and the electric roller A is slidingly arranged on the inside of the slide groove B. A dispersion frame is fixedly installed on the side of the inside of the nozzle, and the dispersion frame is arranged in a cross shape, and the two sides around the dispersion frame are relatively inclined, and the nozzle is arranged in a fan shape.

[0008] Among them, the uniform wet spraying mechanism is composed of a material guide plate, a slide groove C, a sliding frame, an electric roller B and a telescopic rod. The material guide plates are rotatably arranged at the upper and lower parts of the inner side of the nozzle through bearings. A slide groove C is embedded in the front of the nozzle. A sliding frame is slidably arranged at the front of the slide groove C through a slider. Electric rollers B are rotatably arranged on both sides of the slider matching the sliding frame through bearings, and the electric rollers B are slidably arranged on the inner side of the slide groove C. Telescopic rods are rotatably arranged at the upper and lower parts of the side of the sliding frame through a rotating shaft. The end of the telescopic rod is fixedly installed between the side and the relative material guide plate.

[0009] Among them, the angle adjustment wet spraying mechanism is composed of a limit groove, a slide groove A, an adjustment disk, a damping telescopic rod, a limit block and a slide groove B. A slide groove A is embedded at the rear of the concrete spray gun, and an adjustment disk is slidably arranged inside and behind the slide groove A. A damping telescopic rod is fixedly installed between the front of the adjusting disk and the rear of the inner wall of the slide groove A, and a spring is matched with the outside of the damping telescopic rod. Limit blocks are fixedly installed on both sides of the front of the adjusting disk, and a limit groove is embedded at the rear of the sliding bracket near the front of the adjusting disk. There are several limit grooves, which are equidistantly arranged, and the limit blocks are slidably arranged on the inside of the limit grooves.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] 1. This kind of uniform wet spraying mechanism for concrete building surface is provided with a rotating dispersion mechanism, which enables the staff to cooperate between the chute B, the electric roller A and the dispersion rack, and use the electric roller A to move inside the chute B to drive the nozzle to rotate. At the same time, when the high-velocity air carries the concrete through the dispersion rack inside the nozzle, the rotating dispersion rack will continuously break up the passing concrete, thereby improving the effect of rapid dispersion wet spraying of concrete and avoiding the concrete from gathering together when spraying and affecting the uniformity of wet spraying on the building wall.

[0012] 2. The uniform wet spraying mechanism for the concrete building surface is provided with a uniform wet spraying mechanism, which enables the staff to cooperate with the guide plate, the chute C, the sliding frame, the electric roller B and the telescopic rod, and use the electric roller B inside the chute C to drive the sliding frame to slide up and down repeatedly in front of the chute C, drive the side telescopic rod to repeatedly extend and retract, and drive the guide plate to swing repeatedly through the bearing while rotating the shaft, so that the high-velocity air carries the dispersed concrete through the repeatedly swinging guide plate to spray the concrete evenly on the wall over a large range, thereby improving the effect of uniform wet spraying of concrete.

[0013] 3. This kind of uniform wet spraying mechanism for concrete building surface is provided with an angle-adjustable wet spraying mechanism, which enables the staff to cooperate between the limit groove, slide groove A, adjustment plate, damping telescopic rod, limit block and slide groove B, and use the adjustment plate to drive the limit block to slide freely inside several limit grooves through the damping telescopic rod and the outer spring, so that the staff can freely adjust the angle of the concrete spray gun to achieve uniform wet spraying treatment effect on building walls at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the concrete wet spraying machine of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the concrete wet spraying machine in the utility model;

[0016] Figure 3 For the utility model Figure 2 The enlarged schematic diagram of the structure at A in the middle;

[0017] Figure 4 This is a schematic diagram of the top cross-sectional structure of the concrete spray gun in the utility model;

[0018] Figure 5 This is a schematic diagram of the front view of the three-dimensional structure of the dispersion rack in the utility model;

[0019] Figure 6 For the utility model Figure 2 A in the middle is a schematic diagram of the enlarged structure of Example 2.

[0020] Markings in the figure: 1. Concrete wet spraying machine; 101. Universal wheel; 102. Material trough; 103. Material guide trough; 104. Mud pump; 105. Air compressor; 106. Support frame; 107. Screw guide rail; 108. Sliding bracket; 109. Limiting groove; 2. Concrete spray gun; 201. Slide A; 202. Adjusting plate; 203. Damping telescopic rod; 204. Limiting block; 205. Slide B; 3. Nozzle; 301. Electric roller A; 302. Dispersion rack; 303. Material guide plate; 304. Slide C; 305. Sliding rack; 306. Electric roller B; 307. Telescopic rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the utility model:

[0023] Example 1: Reference Figure 1-Figure 5A mechanism for uniform wet spraying of concrete building surface comprises a concrete wet spraying machine 1, universal wheels 101, a material trough 102, a material guide trough 103, a mud pump 104, an air compressor 105, a support frame 106, a screw guide rail 107, a sliding bracket 108, a concrete spray gun 2 and a nozzle 3. Universal wheels 101 are installed at the four corners below the concrete wet spraying machine 1. A support frame 106 is fixedly installed on the side of the concrete wet spraying machine 1. A screw guide rail 107 is fixedly installed on the side of the support frame 106. A sliding bracket 108 is slidably arranged on the side of the screw guide rail 107 through a slider, and the sliding bracket 108 is slidably arranged on the top of the support frame 106. A concrete spray gun 2 is rotatably arranged in front of the sliding bracket 108 through a bearing. A A material trough 102 is provided, and a material guide trough 103 is embedded below the inner wall of the material trough 102. A slurry pump 104 is provided below the inside of the concrete wet spraying machine 1, and the material guide trough 103, the slurry pump 104 and the tail end of the concrete spraying gun 2 are connected through a slurry guide hose. An air compressor 105 is provided on the side of the concrete wet spraying machine 1, and the air compressor 105 and the top of the concrete spraying gun 2 are connected through an air guide pipe. A nozzle 3 is provided on the side of the concrete spraying gun 2 through a bearing rotation. An angle adjustment wet spraying mechanism for conveniently adjusting the angle for wet spraying treatment of building walls at different angles is provided on the outside of the concrete spraying gun 2. A rotating dispersion mechanism for evenly dispersing the sprayed concrete and a uniform wet spraying mechanism for evenly guiding the sprayed concrete are provided inside the nozzle 3.

[0024] Reference Figure 2-Figure 5 , further, the rotating dispersion mechanism is composed of a slideway B205, a motorized roller A301 and a dispersion rack 302;

[0025] A slide groove B205 is embedded in the outer wall of the concrete spray gun 2 near the nozzle 3, and an electric roller A301 is rotatably arranged around the inner ring of the nozzle 3 through a bearing, and the electric roller A301 is slidably arranged on the inner side of the slide groove B205, and a dispersion rack 302 is fixedly installed on the side of the nozzle 3, and the dispersion rack 302 is arranged in a cross shape, and the two sides around the dispersion rack 302 are arranged in a relatively inclined shape, and the nozzle 3 is arranged in a fan shape. When the staff needs to perform concrete wet spraying on the designated building wall, the concrete wet spraying machine 1 is moved on the ground to the designated construction site through the universal wheel 101, and the control screw slide rail 107 drives the sliding bracket 108 to rise upward inside the support frame 106 through the slider, so that the concrete spray gun 2 is at the designated wet spraying height position, and the staff turns on the mud pump 104 and the air compressor 105, so that the mud pump 104 guides the mixed concrete in the material trough 102 out of the guide trough 103. While the concrete is introduced into the concrete spray gun 2 through the slurry guide hose, the air compressor 105 blows high-flow rate compressed air into the concrete spray gun 2 through the air guide hose to carry the concrete out of the nozzle 3. At the same time, the staff turns on the servo motor matching the electric roller A301 to drive the electric roller A301 to move inside the slide groove B205, and drives the nozzle 3 to rotate. When the high-flow rate air carries the concrete through the dispersion rack 302 inside the nozzle 3, the rotating dispersion rack 302 will continuously break up the passing concrete, so that the concrete is evenly dispersed after being processed by the rapidly rotating dispersion rack 302, and then evenly sprayed from the nozzle 3 to the wall over a large range. The staff pushes the concrete wet spraying machine 1 to move on the ground through the universal wheel 101, driving the concrete spray gun 2 to move, and evenly spraying the high wall surface, thereby improving the effect of rapid dispersion and wet spraying of concrete, and avoiding the concrete from gathering together when spraying, affecting the uniformity of wet spraying on the building wall surface.

[0026] Reference Figure 1-Figure 4 , further, the uniform wet spraying mechanism is composed of a material guide plate 303, a slide groove C304, a sliding frame 305, an electric roller B306 and a telescopic rod 307;

[0027] A guide plate 303 is provided at the upper and lower sides of the inner side of the nozzle 3 through bearing rotation, a slide groove C304 is embedded in the front of the nozzle 3, a sliding frame 305 is provided in the front of the slide groove C304 through sliding sliding blocks, electric rollers B306 are provided on both sides of the sliding blocks matching the sliding frame 305 through bearing rotation, and the electric rollers B306 are slidingly arranged on the inner side of the slide groove C304, and telescopic rods 307 are provided at the upper and lower sides of the side of the sliding frame 305 through shaft rotation, and the ends of the telescopic rods 307 are fixedly installed between the sides and the relative guide plate 303. When the concrete passes through the rapidly rotating dispersion frame 3 02 While carrying out the uniform dispersion treatment, the staff turns on the servo motor of the electric roller B306 to drive the electric roller B306 to rotate repeatedly in the inner side of the slide groove C304 for several circles clockwise and several circles counterclockwise, driving the sliding frame 305 to slide up and down repeatedly in the front of the inner side of the slide groove C304, driving the side telescopic rod 307 to repeatedly extend and retract, and while rotating through the shaft, driving the guide plate 303 to repeatedly swing through the bearing, so that the high-velocity air carries the dispersed concrete through the repeatedly swinging guide plate 303 to spray the concrete evenly over a large range onto the wall, thereby improving the effect of uniform wet spraying treatment of the concrete.

[0028] Reference Figure 4 , further, the angle adjustment wet spraying mechanism is composed of a limit groove 109, a slide groove A201, an adjustment plate 202, a damping telescopic rod 203, a limit block 204 and a slide groove B205;

[0029] A slide groove A201 is embedded at the rear of the concrete spray gun 2, and an adjustment disk 202 is slidably arranged inside and behind the slide groove A201. A damping telescopic rod 203 is fixedly installed between the front of the adjusting disk 202 and the rear of the inner wall of the slide groove A201, and a spring is matched with the outer side of the damping telescopic rod 203. Limiting blocks 204 are fixedly installed on both sides of the front of the adjusting disk 202. A limiting groove 109 is embedded near the front of the adjusting disk 202 at the rear of the sliding bracket 108. There are several limiting grooves 109, which are equidistantly arranged around, and the limiting blocks 204 are slidably arranged inside the limiting grooves 109. When the staff needs to wet spray the inclined wall, they need to adjust the concrete When the spray gun 2 is at an angle, the screw guide rail 107 is controlled to lower the sliding bracket 108, and the staff pushes the adjusting plate 202 to expand through the damping telescopic rod 203 and the outer spring, driving the limit block 204 to slide out of the limit groove 109 and release the concrete spray gun 2. Then, the adjusting plate 202 is pushed to drive the concrete spray gun 2 to rotate through the bearing. After adjusting to a suitable wet spraying angle, the adjusting plate 202 is released, so that the damping telescopic rod 203 and the outer spring contract the limit block 204 to slide into the relative inner side of the limit groove 109, and the concrete spray gun 2 is limited and fixed, so that the staff can freely adjust the angle of the concrete spray gun 2 to achieve uniform wet spraying treatment effect on building walls at different angles.

[0030] Reference Figure 2-Figure 4Furthermore, the electric roller A301 and the electric roller B306 are electrically connected to the battery through the matching servo motor and control panel, and the mud pump 104, the air compressor 105, and the screw slide rail 107 are electrically connected to the battery through the control panel of the concrete wet spraying machine 1. Example

[0031] like Figure 3 , Figure 6 As shown, in addition to the embodiment in which a dispersion rack 302 is fixedly installed on the inner side of the nozzle 3, and the dispersion rack 302 is arranged in a cross shape, and both sides of the dispersion rack 302 are arranged in a relatively inclined shape, there is another implementation method in which a dispersion rack 302 is fixedly installed on the inner side of the nozzle 3, and the dispersion rack 302 is arranged in a cross shape, and both sides of the dispersion rack 302 are arranged in a relatively arc shape. When the staff turns on the servo motor matching the electric roller A301 to drive the electric roller A301 to move inside the slide groove B205, the nozzle 3 is driven to rotate. At the same time, when the high-velocity air carries the concrete through the dispersion rack 302 inside the nozzle 3, the arc-shaped surfaces on both sides of the rotating dispersion rack 302 will contact the passing concrete with a larger area, continuously break up the passing concrete and disperse the concrete more evenly to the surroundings along the arc-shaped surface, so that the concrete is evenly dispersed by the rapidly rotating dispersion rack 302, and then evenly sprayed out from the nozzle 3 on the wall over a large range. Compared with the first implementation method, the dispersion efficiency is higher.

[0032] Working principle: First, the staff needs to perform wet spraying of concrete on the designated building wall. After the wet spraying machine 1 is moved to the designated construction site on the ground through the universal wheel 101, the screw guide rail 107 is controlled to drive the sliding bracket 108 to rise upward inside the support frame 106 through the slider. After the concrete spray gun 2 is at the designated wet spraying height position, the staff turns on the mud pump 104 and the air compressor 105, so that the mud pump 104 guides the concrete in the trough 102 out of the guide trough 103 and introduces it into the concrete spray gun 2 through the guide hose. At the same time, the air compressor 105 sends a high-speed Compressed air is blown into the concrete spray gun 2 through the air guide hose to carry the concrete and blow it out of the nozzle 3. At the same time, the staff turns on the servo motor of the electric roller A301 to drive the electric roller A301 to move inside the slideway B205, driving the nozzle 3 to rotate. At the same time, the high-speed air carries the concrete through the dispersion rack 302 inside the nozzle 3. The rotating dispersion rack 302 will continuously break up the passing concrete, so that the concrete is evenly dispersed after passing through the rapidly rotating dispersion rack 302. Then, while the concrete is evenly dispersed after passing through the rapidly rotating dispersion rack 302, the staff blows The servo motor supporting the electric roller B306 drives the electric roller B306 to rotate repeatedly in the inner side of the slide groove C304 for several circles clockwise and several circles counterclockwise, drives the sliding frame 305 to slide up and down repeatedly in the front of the slide groove C304, drives the side telescopic rod 307 to repeatedly extend and retract, and drives the guide plate 303 to swing repeatedly through the bearing while rotating the shaft, so that the high-speed air carries the dispersed concrete through the repeatedly swinging guide plate 303 to spray the concrete evenly on the wall over a large range. Finally, when the staff needs to adjust the angle of the concrete spray gun 2, control the screw slide rail 107 to descend After sliding the bracket 108, the staff pushes the adjustment disk 202 to expand through the damping telescopic rod 203 and the outer spring, drives the limit block 204 to slide out of the limit groove 109 and releases the concrete spray gun 2. Then, the staff pushes the adjustment disk 202 to drive the concrete spray gun 2 to rotate through the bearing. After adjusting to a suitable wet spraying angle, the staff releases the adjustment disk 202 to allow the damping telescopic rod 203 and the outer spring to contract the limit block 204 and slide into the relative limit groove 109 to limit and fix the concrete spray gun 2. In the same way, the concrete spray gun 2 is raised to a specified height position to perform uniform wet spraying treatment on the inclined wall.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanism for uniform wet spraying of concrete building surfaces, comprising a concrete wet spraying machine (1), universal wheels (101), a material trough (102), a material guide trough (103), a slurry pump (104), an air compressor (105), a support frame (106), a screw guide rail (107), a sliding bracket (108), a concrete spray gun (2) and a nozzle (3), wherein the four corners below the concrete wet spraying machine (1) are provided with universal wheels (101), the side of the concrete wet spraying machine (1) is fixedly provided with a support frame (106), the side of the support frame (106) is fixedly provided with a screw guide rail (107), the side of the screw guide rail (107) is provided with a sliding bracket (108) slidably arranged via a slider, and the sliding bracket (108) is fitted and slidably arranged on the support frame (106) inside the upper part, a concrete spray gun (2) is rotatably provided in front of the sliding bracket (108) through a bearing, a material trough (102) is embedded on the upper part of the concrete spray machine (1), a material guide trough (103) is embedded below the inner wall of the material trough (102), a mud pump (104) is provided below the inside of the concrete spray machine (1), and the material guide trough (103), the mud pump (104) and the rear end of the concrete spray gun (2) are connected through a slurry guide hose, an air compressor (105) is provided on the side of the concrete spray machine (1), and the air compressor (105) and the top of the concrete spray gun (2) are connected through an air guide pipe, and a nozzle (3) is rotatably provided on the side of the concrete spray gun (2), characterized in that: The concrete spray gun (2) is provided with an angle-adjustable wet spray mechanism on the outside thereof for conveniently adjusting the angle for wet spraying treatment of building walls at different angles, and the nozzle (3) is provided with a rotating dispersion mechanism for evenly dispersing the sprayed concrete and a uniform wet spray mechanism for evenly guiding the sprayed concrete for wet spraying treatment.

2. A uniform wet spraying mechanism for concrete building surface as claimed in claim 1, characterized in that: The rotating dispersion mechanism is composed of a slide groove B (205), a motorized roller A (301) and a dispersion frame (302); The outer wall of the concrete spray gun (2) is embedded with a slide groove B (205) near the nozzle (3), and an electric roller A (301) is rotatably arranged around the inner ring of the nozzle (3) through bearings, and the electric roller A (301) is slidably arranged inside the slide groove B (205), and a dispersion frame (302) is fixedly installed on the side of the nozzle (3).

3. A uniform wet spraying mechanism for concrete building surface as claimed in claim 1, characterized in that: The uniform wet spraying mechanism is composed of a material guide plate (303), a slide groove C (304), a sliding frame (305), an electric roller B (306) and a telescopic rod (307); A material guide plate (303) is rotatably provided at the upper and lower parts of the inner side of the nozzle (3) via a bearing, a slide groove C (304) is embedded in the front of the nozzle (3), a sliding frame (305) is slidably provided at the front of the inner side of the slide groove C (304) via a slider, electric rollers B (306) are rotatably provided at both sides of the slider matching the slide groove (305) via a bearing, and the electric rollers B (306) are slidably provided on the inner side of the slide groove C (304), and a telescopic rod (307) is rotatably provided at the upper and lower parts of the inner side of the slide groove (305) via a rotating shaft, and the end of the telescopic rod (307) is fixedly installed between the side of the end and the opposite material guide plate (303).

4. A uniform wet spraying mechanism for concrete building surface as claimed in claim 1, characterized in that: The angle-adjustable wet spraying mechanism is composed of a limit groove (109), a slide groove A (201), an adjustment plate (202), a damping telescopic rod (203), a limit block (204) and a slide groove B (205); A slide groove A (201) is embedded at the rear of the concrete spray gun (2), an adjustment disk (202) is slidably arranged inside and behind the slide groove A (201), a damping telescopic rod (203) is fixedly installed between the front of the adjustment disk (202) and the rear of the inner wall of the slide groove A (201), and a spring is matched with the outer side of the damping telescopic rod (203), and limit blocks (204) are fixedly installed on both sides of the front of the adjustment disk (202), and a limit groove (109) is embedded at the rear of the sliding bracket (108) near the front of the adjustment disk (202), and the limit block (204) is slidably arranged on the inner side of the limit groove (109).

5. A uniform wet spraying mechanism for concrete building surface as claimed in claim 2, characterized in that: The dispersion rack (302) is arranged in a cross shape, and the two sides of the dispersion rack (302) are arranged in a relatively inclined shape, and the nozzle (3) is arranged in a fan shape.

6. A uniform wet spraying mechanism for concrete building surface as claimed in claim 4, characterized in that: There are a plurality of limit grooves (109), which are arranged equidistantly around each other.

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