Waterproof paint spraying equipment
By adopting a rotating connection between the spray gun and the nozzle in the waterproof coating spraying equipment, and utilizing a counterweight and sealing ring structure, the problem of poor spray gun stability is solved, achieving stability in the spraying process and coating consistency, thus improving construction quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU POLYTECHNIC VOCATIONAL COLLEGE
- Filing Date
- 2025-08-15
- Publication Date
- 2026-05-19
AI Technical Summary
Existing waterproof coating spraying equipment has poor spray gun stability, and the spray plane is prone to tilting, resulting in uneven thickness of the fan-shaped paint mist coverage, which affects the density and consistency of the waterproof coating.
The design employs a rotating connection between the spray gun and the nozzle. By using a counterweight to keep the center of gravity of the nozzle below the axis of rotation, combined with a sealing ring and nut limiting structure, it ensures that the nozzle nozzle remains horizontal, thus enhancing spray stability.
It improves the stability and quality of the spraying process, ensures uniform coating thickness, and enhances construction efficiency and spraying effect.
Smart Images

Figure CN224259812U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building decoration technology, specifically a waterproof coating spraying device. Background Technology
[0002] Waterproof coating spraying equipment is a type of equipment specifically designed for fields such as construction and waterproofing projects. It is used to evenly spray waterproof coatings onto different surfaces to form an effective waterproof protective layer. This type of equipment generally consists of a spraying machine, spray guns, an air supply system, and a power system, which can improve coating efficiency and quality while reducing the labor intensity of manual operation.
[0003] The working principle of waterproof coating spraying equipment typically involves the application of compressed air or liquid pressure. High pressure atomizes the waterproof coating and sprays it onto the target surface through nozzles. During spraying, the equipment adjusts parameters such as spraying pressure, nozzle size, and spraying angle to ensure uniform coating coverage and avoid missed areas or over-spraying. Modern waterproof coating spraying equipment is also highly efficient and energy-saving, reducing coating waste and improving material utilization.
[0004] Most spray guns use fan-shaped nozzles, which are spraying components that atomize paint and spray it evenly in a fan shape. They offer advantages such as wide spray width, uniform coverage, and high efficiency. The spray pattern is a flat fan, allowing for coverage of a large area in a single pass, reducing overlap and missed areas, and significantly improving construction efficiency. When using the spray gun, the fan-shaped area must be kept horizontal. Stand at one end of the wall and apply the paint steadily from the top to the bottom, then move horizontally to ensure even coverage. However, handheld spray guns are less stable, and the spray plane is prone to tilting, resulting in uneven coverage of the fan-shaped paint mist, affecting the density and consistency of the waterproof coating. To address these issues, a waterproof coating spraying device is provided. Utility Model Content
[0005] The purpose of this invention is to provide a waterproof coating spraying device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof coating spraying device, including a spray gun;
[0007] The connector is threaded to one end of the spray gun, and the nozzle is rotatably mounted on one end of the connector.
[0008] The counterweight, which engages with the lower end of the nozzle, is used to keep the center of gravity of the nozzle below the axis of rotation, thus maintaining the nozzle nozzle in a horizontal position.
[0009] As a preferred technical solution of this utility model, the nozzle is configured as a fan-shaped nozzle.
[0010] As a preferred technical solution of this utility model, one end of the connector is inserted into the nozzle.
[0011] As a preferred embodiment of this utility model, a sealing ring for sealing is installed at one end of the connector inserted into the nozzle.
[0012] As a preferred technical solution of this utility model, a nut is rotatably connected to the outer wall of the connecting seat, and one end of the nozzle is threaded into the nut.
[0013] As a preferred technical solution of this utility model, the inner wall of the nut is provided with a limiting ring for limiting the nut, and the outer wall of the connecting seat is provided with an annular groove that matches the limiting ring.
[0014] As a preferred technical solution of this utility model, pins are slidably installed on both sides of the nozzle, and the end face of the nut is provided with a pin hole that matches the pin.
[0015] As a preferred technical solution of this utility model, a hook is fixedly connected to the lower end of the nozzle, and a hanging hole matching the hook is opened at the upper end of the counterweight.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This invention uses a connecting seat to rotately connect the nozzle and a counterweight to keep the nozzle's center of gravity below the axis of rotation, thus maintaining the nozzle's nozzle in a horizontal position. This solves the problems of poor stability and easy tilting of the spray plane in existing spray guns, which leads to uneven coverage of the fan-shaped paint mist and affects the density and consistency of the waterproof coating. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the spray gun according to an embodiment of the present utility model;
[0019] Figure 2 This is a schematic diagram of the connection structure between the nozzle and the connecting seat in an embodiment of this utility model;
[0020] Figure 3 This is a schematic diagram of the connecting seat structure according to an embodiment of the present utility model.
[0021] In the diagram: 1. Spray gun; 2. Connecting seat; 21. Nut; 3. Nozzle; 31. Sealing ring; 32. Pin; 4. Counterweight. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-3 This embodiment provides a waterproof coating spraying device, including a spray gun 1, which is a manual spray gun 1 with a reference model of L60T10. The lower end of the spray gun 1 is used to connect to an air pump, and one end of the spray gun 1 is provided with a paint outlet. By connecting a nozzle to the paint outlet, the flow state, speed and shape of the discharged coating are controlled, so as to efficiently and accurately deliver liquid or gas to the target area.
[0024] like Figure 1 As shown, the paint outlet of spray gun 1 is threadedly connected to a connecting seat 2. A nozzle 3 is rotatably mounted on the other end of the connecting seat 2, away from the spray gun 1. The nozzle 3 is a HU-type fan-shaped nozzle. The waterproof coating is pressurized by an air pump and finally sprayed out in a fan shape from the nozzle 3 through the spray gun 1 and connecting seat 2. The nozzle 3 can adapt to large-area spraying and can be fine-tuned according to changes in the construction environment, enhancing operational flexibility and precision, making it suitable for various application scenarios.
[0025] like Figure 2 As shown, one end of the connector 2 is inserted into the nozzle 3. To ensure a tight seal between the connector 2 and the nozzle 3, a sealing ring 31 is installed at the end of the connector 2 inserted into the nozzle 3. The sealing ring 31 is made of rubber and fills the gap between the connector 2 and the nozzle 3 to achieve a sealing effect. A nut 21 is rotatably connected to the outer wall of the connector 2, and a limit ring is provided on the inner wall of the nut 21. An annular groove is formed on the outer wall of the connector 2, and the limit ring is rotatably installed in the annular groove to limit the nut 21, ensuring that the nut 21 can rotate while preventing it from detaching from the connector 2. The application of the sealing ring 31 can effectively prevent paint leakage and improve the stability and reliability of the spraying process. In addition, the rubber material of the sealing ring 31 has good elasticity and durability, and can maintain a good sealing effect even in long-term use.
[0026] like Figure 2As shown, one end of the nozzle 3 is threaded into the nut 21, maintaining the angle of the nozzle 3. By rotating the nut 21, the nozzle 3 is brought closer to the connecting seat 2, thereby compressing the sealing ring 31. The sealing ring 31 is made of rubber, which can deform under compression, further filling the gap between the connecting seat 2 and the nozzle 3 to ensure a tight seal. This design not only ensures a tight seal but also makes the connection between the nozzle 3 and the connecting seat 2 more secure, preventing the nozzle 3 from loosening or paint leakage due to pressure fluctuations. In addition, the deformation capability of the rubber sealing ring 31 enhances the adaptability of the equipment, maintaining a high sealing effect in different working environments, extending the service life of the spray gun 1 and reducing maintenance costs.
[0027] like Figure 2 and Figure 3 As shown, pins 32 are slidably mounted on both sides of the nozzle 3. A pin hole is provided on the end face of the nut 21. By rotating the nut 21, the sealing ring 31 is compressed, completing the sealing connection between the nozzle 3 and the connecting seat 2. After aligning the pins 32 of the nozzle 3 with the nut 21, the sliding pins 32 are inserted into the pin holes. At this point, rotating the nut 21 will synchronously drive the nozzle 3 to rotate. The design of the pins 32 ensures a stable and reliable connection between the nozzle 3 and the connecting seat 2. Simultaneously, by rotating the nut 21, the angle of the nozzle 3 can be easily adjusted to meet different spraying requirements.
[0028] like Figure 1 and Figure 2 As shown, a counterweight 4 is installed at the lower end of the nozzle 3. Specifically, a hook is fixedly connected to the lower end of the nozzle 3, and a hanging hole is provided at the upper end of the counterweight 4. The counterweight 4 is hung on the lower end of the nozzle 3 through the hanging hole. When the nozzle 3 is in a horizontal position, the center of gravity of the counterweight 4 is on the same vertical line as the rotation center of the nozzle 3. By rotating the nut 21, after the nozzle 3 is close to the connecting seat 2, the gap between the hook and the nut 21 is less than the depth of the hanging hole, which can limit the counterweight 4 and prevent the counterweight 4 from falling off the hook.
[0029] The counterweight 4 is made of steel. Its installation ensures that its center of gravity is located below the rotation axis of the nozzle 3. The force exerted by the counterweight 4 on the nozzle 3 is far greater than the frictional force between the nozzle 3 and the sealing ring 31. Therefore, even if the nozzle 3 tilts, the weight of the counterweight 4 can simultaneously rotate the nozzle 3 and the nut 21, maintaining the nozzle 3's nozzle nozzle in a horizontal position. This ensures a stable spray pattern and guarantees a uniform, unbiased paint surface. The low center of gravity design of the counterweight 4 not only enhances the self-stability of the nozzle 3 but also effectively prevents accidental deviation during rotation. The nozzle 3 maintains a stable spray angle throughout use, contributing to improved construction quality and ensuring a uniform coating thickness for the waterproof coating.
[0030] Compared to existing fan-shaped nozzles, the counterweight 4 ensures the angle of the nozzle 3, avoiding uneven spraying caused by the tilting of the nozzle 3, and significantly improving the spraying quality and efficiency.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waterproof coating spraying device, characterized in that, include: Spray gun (1); A connecting seat (2) is threadedly connected to one end of a spray gun (1), and a nozzle (3) is rotatably mounted on one end of the connecting seat (2); The counterweight (4) is engaged at the lower end of the nozzle (3) to keep the center of gravity of the nozzle (3) below the axis of rotation and maintain the nozzle (3) in a horizontal position.
2. The waterproof coating spraying equipment according to claim 1, characterized in that: The nozzle (3) is configured as a fan-shaped nozzle.
3. The waterproof coating spraying equipment according to claim 2, characterized in that: One end of the connector (2) is inserted into the nozzle (3).
4. The waterproof coating spraying equipment according to claim 3, characterized in that: The connector (2) is inserted into one end of the nozzle (3) and a sealing ring (31) is installed for sealing.
5. A waterproof coating spraying device according to claim 4, characterized in that: The outer wall of the connecting seat (2) is rotatably connected to a nut (21), and one end of the nozzle (3) is threaded into the nut (21).
6. The waterproof coating spraying equipment according to claim 5, characterized in that: The inner wall of the nut (21) is provided with a limiting ring for limiting the nut (21), and the outer wall of the connecting seat (2) is provided with an annular groove that matches the limiting ring.
7. A waterproof coating spraying device according to claim 6, characterized in that: The nozzle (3) is slidably mounted with pins (32) on both sides, and the end face of the nut (21) is provided with a pin hole that matches the pins (32).
8. A waterproof coating spraying device according to claim 7, characterized in that: The lower end of the nozzle (3) is fixedly connected to a hook, and the upper end of the counterweight (4) is provided with a hanging hole that matches the hook.