A method for deep cleaning of a curb parking space and a dedicated lance assembly
By combining a bend assembly with a multi-angle nozzle spray gun assembly, along with tilting and vertical rinsing and side baffles to collect splashes, the problem of cleaning dead corners in roadside parking spaces has been solved, achieving efficient and refined cleaning without secondary pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 康迪
- Filing Date
- 2026-03-26
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies cannot effectively clean the blind spots of roadside parking spaces, resulting in low cleaning efficiency and a high risk of secondary pollution.
The spray gun assembly, which combines elbow components with multi-angle nozzles, achieves a systematic cleaning process by using tilted and vertical rinsing combined with side baffles to collect splashes and working with a sweeper truck to recover wastewater.
It achieved systematic and in-depth cleaning of roadside parking spaces, improved cleaning efficiency, avoided secondary pollution, and reached the standard of refined cleaning.
Smart Images

Figure CN122106006A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of urban sanitation technology, specifically to a method for deep cleaning of roadside parking spaces and a dedicated spray gun assembly for the method. Background Technology
[0002] With the continuous growth of urban motor vehicle ownership, the number of roadside parking spaces is constantly increasing. Due to the long-term parking of vehicles, the area under the cars becomes a blind spot for sanitation cleaning, where dust and garbage are difficult to remove. Traditional cleaning methods mainly have the following problems: (1) Existing sanitation sweepers cannot access the space under the parking space, especially under vehicles with low chassis; (2) The spray guns of the small advertisement flushing trucks are mostly designed for direct spraying or fixed angle, which cannot flexibly cope with different vehicle chassis heights and parking postures; (3) Splashing is likely to occur during the cleaning process, causing secondary pollution; (4) Lack of systematic work process, resulting in low cleaning efficiency and incomplete cleaning effect.
[0003] Therefore, there is an urgent need for a method and specialized equipment that can systematically solve the problem of cleaning roadside parking spaces. Summary of the Invention
[0004] The present invention aims to provide a method for deep cleaning of roadside parking spaces and a special spray gun assembly to solve the problems of difficult-to-reach cleaning dead corners, low work efficiency, and easy generation of secondary pollution in the prior art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for deep cleaning roadside parking spaces includes the following steps: Step 1: Safety Isolation: Place work signs and cones around the work area to delineate the safe work boundary; Step 2, Inclined Washing: Use a bend assembly with a 50-degree bending angle and a nozzle with a 25-degree fan angle to perform high-pressure washing on the underside of vehicles parked close to the curb at an inclined angle. Step 3, Vertical Washing: Replace with a bend assembly with a 90-degree bend angle and install a nozzle with a 25-degree fan angle to perform high-pressure washing on the bottom of the vehicle and the underside of the curb vertically downwards. Step 4, splash protection and collection: During the washing process, the vehicle moves the side baffles in sync to collect splashes; Step 5, Wastewater Recycling: The sweeper truck finishes the work area, sucking up the wastewater and taking away the garbage.
[0006] As a preferred technical solution, in steps two and three, the elbow assembly and the spray gun body are connected by a two-way quick-connect structure, which can be replaced without tools.
[0007] As a preferred technical solution, in step two, nozzles with different fan-shaped angles can be replaced according to operational needs, including nozzles with a fan-shaped angle of 40 degrees for large-area cleaning and nozzles with a fan-shaped angle of 15 degrees for concentrated high-pressure flushing.
[0008] The present invention also provides a dedicated spray gun assembly for implementing the above method, comprising: Spray gun body; A quick-connect fitting is located at the water outlet end of the spray gun body; At least two elbow components, namely a first elbow component with a bending angle of 90 degrees and a second elbow component with a bending angle of 50 degrees; Each of the elbow components has a quick-connect interface adapted to the quick-connect fitting at its water inlet end, and each of the elbow components has a detachable nozzle at its water outlet end.
[0009] Furthermore, the nozzle includes at least three nozzles with different fan angles: a first nozzle with a fan angle of 40 degrees, a second nozzle with a fan angle of 25 degrees, and a third nozzle with a fan angle of 15 degrees.
[0010] Furthermore, the outer surfaces of the first, second, and third nozzles are respectively provided with color markings.
[0011] Furthermore, the quick-connect connector and the quick-connect interface adopt a bidirectional quick-connect structure.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Through an integrated "blowing, blocking, and collecting" operation process, systematic deep cleaning of roadside parking spaces was achieved, filling a gap in existing technology; 2. Two types of bends, 90 degrees and 50 degrees, are used to deal with different scenarios. Combined with two-way quick-connect technology, it realizes rapid switching of operation mode and greatly improves cleaning efficiency. 3. The side baffles move synchronously to collect splashes, effectively preventing secondary pollution; 4. The sweeper truck collects wastewater at the end of the cleaning process, ensuring the road surface is restored to its original condition and meets the standards of refined cleaning. 5. The multi-angle nozzles with color markings enable precise control of cleaning effects and reduce water waste. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the special spray gun assembly of the present invention; Figure 2 This is a schematic diagram of the assembly of the 90-degree elbow assembly and the nozzle; Figure 3This is a schematic diagram of the assembly of a 50-degree elbow component and a nozzle. Figure 4 A comparative diagram showing the structure of three nozzles with different angles; Figure 5 This is a schematic diagram of the cleaning method of the present invention.
[0014] In the diagram: 1. Spray gun body; 2. Quick connector; 3. First elbow assembly (90 degrees); 4. Second elbow assembly (50 degrees); 5. Quick connector; 6. Nozzle; 61. First nozzle (40 degrees); 62. Second nozzle (25 degrees); 63. Third nozzle (15 degrees). Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings. Example
[0016] This embodiment provides a method for deep cleaning of roadside parking spaces, the specific steps of which are as follows:
[0017] S1. Safety Isolation: Workers first place work signs and cones around the area to be cleaned to delineate the safe work boundary and ensure the safety of pedestrians and vehicles during the work.
[0018] S2. Tilt Washing: Depending on the vehicle's parking situation, the operator selects a second elbow assembly with a 50-degree bend angle, connects it to the spray gun body via a two-way quick-connect interface, and equips it with a green nozzle with a 25-degree fan angle. The spray gun is then tilted and aimed at the underside of the vehicle close to the curb, and high-pressure washing is initiated to remove accumulated dust and debris.
[0019] S3. Vertical Washing: After completing the inclined washing, the operator quickly replaces the first elbow assembly with a 90-degree bend using the two-way quick-connect interface, and also equips it with a green nozzle with a fan angle of 25 degrees. The spray gun is held vertically to the ground, aimed at the underside of the vehicle and the underside of the curb, for high-pressure washing to thoroughly remove stubborn dirt.
[0020] S4. Anti-splash collection: During the washing process, the working vehicle moves the side baffles in sync, and the baffles accurately collect the splashes generated during washing, effectively preventing secondary pollution.
[0021] S5. Wastewater Recycling: After rinsing, the sweeper truck behind will finish cleaning the work area, sucking up the residual wastewater and taking away the garbage, so that the road surface is restored to a clean state. Example
[0022] This embodiment provides a dedicated spray gun assembly for implementing the above method.
[0023] like Figure 1As shown, the dedicated spray gun assembly includes a spray gun body 1, a quick-connect fitting 2, a first elbow assembly 3, and a second elbow assembly 4. The quick-connect fitting 2 is located at the water outlet end of the spray gun body 1.
[0024] like Figure 2 As shown, the first elbow assembly 3 has a bending angle of 90 degrees, its water inlet end is provided with a quick-connect interface 5 adapted to the quick-connect connector 2, and its water outlet end is provided with a detachable nozzle 6. This nozzle 6 is a second nozzle 62 with a fan-shaped angle of 25 degrees.
[0025] like Figure 3 As shown, the bending angle of the second elbow assembly 4 is 50 degrees, and its inlet end is also equipped with a quick-connect interface 5, while its outlet end is equipped with a detachable nozzle 6. This nozzle 6 is a second nozzle 62 with a fan-shaped angle of 25 degrees.
[0026] like Figure 4 As shown, the nozzle 6 includes three specifications: the first nozzle 61 has a fan angle of 40 degrees and a white outer surface; the second nozzle 62 has a fan angle of 25 degrees and a green outer surface; and the third nozzle 63 has a fan angle of 15 degrees and a yellow outer surface.
[0027] The quick-connector 2 and quick-connect interface 5 adopt a bidirectional quick-connect structure, allowing operators to replace elbow components or nozzles in seconds without tools.
[0028] During operation, the combination of elbow components and nozzles can be flexibly selected according to the site conditions. For vehicles close to the curb, a 50-degree elbow component with a 25-degree nozzle is selected; for vehicles with low chassis, a 90-degree elbow component with a 25-degree nozzle is selected; for open areas, a 40-degree nozzle can be used for large-area cleaning; for stubborn stains, a 15-degree nozzle can be used for concentrated high-pressure flushing.
[0029] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural modifications made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A method for deep cleaning roadside parking spaces, characterized in that, Includes the following steps: Step 1: Safety Isolation: Place work signs and cones around the work area to delineate the safe work boundary; Step 2, Inclined Washing: Use a bend assembly with a 50-degree bending angle and a nozzle with a 25-degree fan angle to perform high-pressure washing on the underside of vehicles parked close to the curb at an inclined angle. Step 3, Vertical Washing: Replace with a bend assembly with a 90-degree bend angle and install a nozzle with a 25-degree fan angle to perform high-pressure washing on the bottom of the vehicle and the underside of the curb vertically downwards. Step 4, splash protection and collection: During the washing process, the vehicle moves the side baffles in sync to collect splashes; Step 5, Wastewater Recycling: The sweeper truck finishes the work area, sucking up the wastewater and taking away the garbage.
2. The method for deep cleaning roadside parking spaces according to claim 1, characterized in that, In steps two and three, the elbow assembly and the spray gun body are connected by a two-way quick-connect structure, allowing for replacement without tools.
3. The method for deep cleaning roadside parking spaces according to claim 1, characterized in that, In step two, nozzles with different fan angles can be replaced according to the operational requirements, including nozzles with a fan angle of 40 degrees for large-area cleaning and nozzles with a fan angle of 15 degrees for concentrated high-pressure rinsing.
4. A dedicated spray gun assembly for implementing the method according to any one of claims 1 to 3, characterized in that, include: Spray gun body; A quick-connect fitting is located at the water outlet end of the spray gun body; At least two elbow components, namely a first elbow component with a bending angle of 90 degrees and a second elbow component with a bending angle of 50 degrees; Each of the elbow components has a quick-connect interface adapted to the quick-connect fitting at its water inlet end, and each of the elbow components has a detachable nozzle at its water outlet end.
5. The dedicated spray gun assembly according to claim 4, characterized in that, The nozzle includes at least three nozzles with different fan angles: a first nozzle with a fan angle of 40 degrees, a second nozzle with a fan angle of 25 degrees, and a third nozzle with a fan angle of 15 degrees.
6. The dedicated spray gun assembly according to claim 5, characterized in that, The outer surfaces of the first, second, and third nozzles are respectively marked with color symbols.
7. The dedicated spray gun assembly according to claim 4, characterized in that, The quick-connector and the quick-connect interface adopt a bidirectional quick-connect structure.