Waterproof paint spraying machine for waterproof construction
By installing a return pump and a cleaning mechanism in the waterproof coating spraying machine, the problem of residual coating in the spray pipes is solved, enabling coating recycling and pipe cleaning, reducing construction costs and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Existing waterproof coating spraying machines leave coating residue in the spray pipes after use, leading to coating waste and pipe blockage.
A waterproof coating spraying machine was designed, comprising a discharge pipe, a spraying mechanism, a booster pump, a return pump, a cleaning pump, and a controller. The return pump draws residual coating back to the mixing tank, and a cleaning mechanism is set up to clean the spraying pipes to prevent the coating from solidifying and clogging.
It effectively reduces paint waste, lowers construction costs, extends equipment lifespan, and reduces maintenance frequency.
Smart Images

Figure CN224119869U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of spraying equipment technology, and specifically relates to a waterproof coating spraying machine for waterproof construction. Background Technology
[0002] Waterproofing is an important part of building construction technology. During the waterproofing process, it is necessary to select appropriate waterproofing materials, design a reasonable waterproofing plan, and strictly follow the construction specifications to ensure the quality and effectiveness of the waterproofing layer. At the same time, after the waterproofing is completed, quality inspection and acceptance are also required to ensure that the waterproofing effect meets the requirements and provides a guarantee for the long-term use of the building.
[0003] In building waterproofing construction, waterproof coating spraying machines are commonly used equipment. However, after use, existing waterproof coating spraying machines often leave some coating residue inside the spray pipes. This not only wastes the coating and increases construction costs, but also, if the residue remains for a long time, it may solidify inside the pipes, causing blockages and affecting subsequent normal use, requiring significant time and effort for cleaning and maintenance. Therefore, effectively solving the problem of waterproof coating residue inside spray pipes has become a pressing technical challenge in the field of waterproof coating spraying machines. Utility Model Content
[0004] This utility model addresses the problems of the prior art by providing a waterproof coating spraying machine for waterproof construction.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] A waterproof coating spraying machine for waterproof construction includes a mixing tank, a base fixedly connected to the bottom surface of the mixing tank body, casters fixedly connected to the four corners of the base bottom surface, a handrail fixedly connected to the left end of the top surface of the casters, a feeding port fixedly connected to the top of the left side of the mixing tank, and a discharge pipe fixedly connected to the bottom of the right side of the mixing tank. The other end of the discharge pipe is fixedly connected to a spraying mechanism with a spray head, and a recycling mechanism is fixedly connected to the side of the discharge pipe.
[0007] The recycling mechanism includes a mounting shell, which is fixedly mounted on the top surface of the base. A discharge pipe passes through the left and right sides of the mounting shell. The front cross-section of the discharge pipe inside the mounting shell is Z-shaped. A booster pump is fixedly connected to the side of the discharge pipe inside the mounting shell. The booster pump is fixedly connected to the front and back inner walls of the mounting shell. A reflux pump is fixedly connected to the top surface of the mounting shell. The inlet of the reflux pump is fixedly connected to the discharge pipe between the booster pump and the inner wall of the mounting shell via a pipe. Inside the mounting shell, a first valve is also fixedly connected to the side of the discharge pipe at the left end of the connection between the booster pump's inlet pipe and the discharge pipe.
[0008] The recycling facility also includes a cleaning facility.
[0009] Preferably, the cleaning mechanism includes a cleaning pump fixedly installed on the bottom surface of the inner wall of the mounting housing. The inlet of the cleaning pump is connected to a water storage tank via a pipe. The outlet of the cleaning pump is connected to the discharge pipe between the right side of the mounting housing and the booster pump via a pipe. A second valve is fixedly connected to the side of the pipe at the outlet of the cleaning pump. A third valve is fixedly connected to the connection between the pipe at the outlet of the cleaning pump and the discharge pipe, as well as to the side of the discharge pipe between the right side of the mounting housing.
[0010] Preferably, a controller is fixedly connected to the front of the mounting housing, and the controller is electrically connected to the first valve, the second valve and the third valve respectively.
[0011] Preferably, a rotary motor is fixedly connected to the top surface of the mixing tank, the output end of the rotary motor is vertically downward, and a rotating rod is fixedly connected to the output end of the rotary motor through the top surface of the mixing tank. A stirring blade is arranged on the side of the rotating rod.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] This utility model discloses a waterproof coating spraying machine for waterproof construction. The machine utilizes a return mechanism, comprising a discharge pipe, a spraying mechanism, a mounting housing, a booster pump, a return pump, a first valve, a cleaning pump, a second valve, a third valve, and a controller. The booster pump delivers the coating to the spraying mechanism for spraying. After spraying, the first valve is closed and the return pump is activated to pump any remaining coating in the discharge pipe back to the mixing tank, preventing coating residue from clogging the discharge pipe, reducing coating waste, and effectively lowering construction costs. The cleaning mechanism is connected to an external water tank via a cleaning pump. During normal cleaning, the first valve is kept closed, and the second valve is opened to flush the discharge pipe and spraying mechanism. If uneven spraying still occurs, the third valve can be closed and the first valve opened for backwashing to ensure no coating solidification or blockage in the discharge pipe, extending equipment lifespan and reducing maintenance frequency and costs. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the recycling mechanism of this utility model;
[0017] In the above figures, 1. Mixing tank; 2. Base; 3. Casters; 4. Handrail; 5. Feeding port; 6. Discharge pipe; 7. Spraying mechanism; 8. Mounting shell; 9. Booster pump; 10. Return pump; 11. First valve; 12. Cleaning pump; 13. Second valve; 14. Third valve; 15. Controller; 16. Rotary motor; 17. Rotating rod; 18. Agitator blade. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Example 1, as Figure 1 , Figure 2 As shown, a waterproof coating spraying machine for waterproof construction according to this application includes a mixing tank 1, a base 2 fixedly connected to the bottom surface of the mixing tank 1, casters 3 fixedly connected to the four corners of the bottom surface of the base 2, a handle 4 for workers to push the spraying machine fixedly connected to the left end of the top surface of the casters 3, a feeding port 5 fixedly connected to the top of the left side of the mixing tank 1, and a discharge pipe 6 fixedly connected to the bottom of the right side of the mixing tank 1, a spraying mechanism 7 with a spray head fixedly connected to the other end of the discharge pipe 6, and a recycling mechanism fixedly connected to the side of the discharge pipe 6.
[0021] The recycling mechanism includes a mounting shell 8, which is fixedly mounted on the top surface of the base 2. A discharge pipe 6 passes through the left and right sides of the mounting shell 8. The discharge pipe 6 inside the mounting shell 8 has a Z-shaped front cross-section, and a booster pump 9 is fixedly connected to the side of the discharge pipe 6 inside the mounting shell 8. The booster pump 9 is fixedly connected to the front and back inner walls of the mounting shell 8. The booster pump 9 pumps the waterproof coating in the mixing tank 1 to the spraying mechanism 7 for spraying. A return pump 10 is fixedly connected to the top surface of the mounting shell 8. The inlet of the return pump 10 is connected to the booster pump 9 via a pipe. The discharge pipe 6 is fixedly connected to the inner wall of the mounting shell 8. Inside the mounting shell 8, a first valve 11 is also fixedly connected to the side of the discharge pipe 6 at the left end of the connection between the inlet pipe of the booster pump 9 and the discharge pipe 6. The first valve 11 is normally open. When in use, after the waterproof coating is sprayed, the first valve 11 is closed, then the booster pump 9 is turned off, and the return pump 10 is started to pump the remaining waterproof coating in the discharge pipe 6 back to the mixing tank 1 for future use, so as to avoid the waterproof coating remaining in the mixing tank 1 and clogging the discharge pipe 6, and at the same time to avoid the waste of waterproof coating.
[0022] The recycling facility also includes a cleaning facility;
[0023] The cleaning mechanism includes a cleaning pump 12 fixedly installed on the bottom of the inner wall of the mounting housing 8. The inlet of the cleaning pump 12 is connected to a water tank via a pipe. The outlet of the cleaning pump 12 is connected via a pipe to the discharge pipe 6 between the right side of the mounting housing 8 and the booster pump 9. A second valve 13 is fixedly connected to the side of the pipe at the outlet of the cleaning pump 12. A third valve 14 is fixedly connected to the connection between the pipe at the outlet of the cleaning pump 12 and the discharge pipe 6, and to the side of the discharge pipe 6 between the right side of the mounting housing 8. The second valve 13 is normally closed, and the third valve 14 is normally open. During use, after the waterproof coating is sprayed and the return pump 10 has recovered the remaining waterproof coating in the discharge pipe 6, the first valve 11 is kept closed, the second valve 13 is opened, and the cleaning pump 12 is started to clean the discharge pipe 6 and the interior of the spraying mechanism 7. This ensures that no waterproof coating remains in the discharge pipe 6, preventing the waterproof coating from solidifying and clogging the discharge pipe 6 and the spraying mechanism 7, thus ensuring unobstructed pipe flow and reducing maintenance costs.
[0024] If uneven discharge is found in the spraying mechanism 7, the remaining waterproof coating in the mixing tank 1 can be transferred after the discharge pipe 6 is cleaned, the third valve 14 can be closed, the first valve 11 can be opened, and the cleaning pump 12 can be started to backwash the discharge pipe 6.
[0025] A controller 15 is fixedly connected to the front of the mounting housing 8. Relays within the controller 15 are electrically connected to the first valve 11, the second valve 13, and the third valve 14, respectively. The controller 15 controls the opening and closing of the first valve 11, the second valve 13, and the third valve 14. The controller 15 controls the electrical components used in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, displays, computer input devices, switches, communication devices, lights, speakers, and microphones. The controller 15 is an Intel processor, AMD processor, PLC controller, ARM processor, or microcontroller. It is also used in conjunction with a motherboard, memory modules, storage media, and a power supply, which is either AC power or a lithium battery. When a display screen is included, a graphics card is also included. For the operating principle of the controller 15, please refer to "Automatic Control Principles," "Microcontroller Principles and Application Simulation Cases," and "Sensor Principles and Applications" published by Tsinghua University Press. Other books in this field can also be consulted. Other automation control and electrical components not mentioned are well-known to those skilled in the art and will not be described further here.
[0026] A rotary motor 16 is fixedly connected to the top surface of the mixing tank 1. The output end of the rotary motor 16 is set vertically downward. A rotating rod 17 is fixedly connected to the output end of the rotary motor 16 through the top surface of the mixing tank 1. Stirring blades 18 are arranged on the side of the rotating rod 17. When in use, the rotary motor 16 is started to drive the stirring blades 18 to rotate, so as to achieve uniform stirring of the waterproof coating in the mixing tank 1, which facilitates the subsequent use of the waterproof coating.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A waterproof coating spraying machine for waterproof construction, comprising a mixing tank (1), wherein a base (2) is fixedly connected to the bottom surface of the mixing tank (1), universal wheels (3) are fixedly connected to the four corners of the bottom surface of the base (2), a handrail (4) is fixedly connected to the left end of the top surface of the universal wheels (3), and a feeding port (5) is fixedly connected to the top of the left side of the mixing tank (1), characterized in that, It also includes a discharge pipe (6), which is fixedly connected to the bottom of the right side of the mixing tank (1), and a spraying mechanism (7) with a spray head is fixedly connected to the other end of the discharge pipe (6). A recycling mechanism is fixedly connected to the side of the discharge pipe (6). The recycling mechanism includes a mounting shell (8), which is fixedly mounted on the top surface of the base (2). The discharge pipe (6) passes through the left and right sides of the mounting shell (8). The front cross-section of the discharge pipe (6) inside the mounting shell (8) is Z-shaped. A booster pump (9) is fixedly connected to the side of the discharge pipe (6) inside the mounting shell (8). The booster pump (9) is fixedly connected to the front and back inner walls of the mounting shell (8). A return pump (10) is fixedly connected to the top surface of the mounting shell (8). The inlet of the return pump (10) is fixedly connected to the discharge pipe (6) between the booster pump (9) and the inner wall of the mounting shell (8) through a pipe. Inside the mounting shell (8), a first valve (11) is also fixedly connected to the side of the discharge pipe (6) at the left end of the connection between the inlet pipe of the booster pump (9) and the discharge pipe (6). The recycling facility also includes a cleaning facility.
2. The waterproof coating spraying machine for waterproof construction according to claim 1, characterized in that, The cleaning mechanism includes a cleaning pump (12) fixedly installed on the bottom surface of the inner wall of the mounting shell (8). The inlet of the cleaning pump (12) is connected to a water storage tank through a pipe. The outlet of the cleaning pump (12) is connected to the discharge pipe (6) between the right side of the mounting shell (8) and the booster pump (9) through a pipe. A second valve (13) is fixedly connected to the side of the pipe at the outlet of the cleaning pump (12). A third valve (14) is fixedly connected to the connection between the pipe at the outlet of the cleaning pump (12) and the discharge pipe (6) between the right side of the mounting shell (8).
3. A waterproof coating spraying machine for waterproof construction according to claim 2, characterized in that, The mounting housing (8) is fixedly connected to a controller (15) on the front side. The controller (15) is electrically connected to the first valve (11), the second valve (13) and the third valve (14) respectively.
4. A waterproof coating spraying machine for waterproof construction according to claim 1, characterized in that, A rotary motor (16) is fixedly connected to the top surface of the mixing tank (1). The output end of the rotary motor (16) is set vertically downward. A rotating rod (17) is fixedly connected to the output end of the rotary motor (16) through the top surface of the mixing tank (1). A stirring blade (18) is arranged on the side of the rotating rod (17).