An internet intelligent self-service car washing machine mistake-proof gun system
By controlling the check valve and diaphragm pump, combined with the flow meter and Internet intelligent system, the problem of users confusing the water gun and foam gun in the self-service car wash machine has been solved, realizing efficient car wash process management and improved user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CHEHAIYANG ENVIRONMENTAL PROTECTION SCI & TECH CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-19
AI Technical Summary
During the use of existing self-service car wash machines, users often confuse the water guns with the foam guns, leading to resource waste, reduced operational efficiency, and a poor user experience.
By controlling the check valve and diaphragm pump, the independence of the clean water and foam water circuits is ensured. Combined with the data feedback from the clean water flow meter and the foam flow meter, the Internet-connected intelligent control system enables real-time monitoring and intelligent management of the car wash process, preventing confusion between different types of nozzles.
It effectively prevents the mixing of water guns and foam guns, improves car washing efficiency and user experience, reduces resource waste, and enhances the system's intelligence level.
Smart Images

Figure CN224375542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of car wash machine technology, and more specifically, to an internet-connected intelligent self-service car wash machine anti-misuse gun system. Background Technology
[0002] Self-service car wash machines originated in Europe and America. They are convenient and intelligent self-service car wash machines that allow car owners to wash their own vehicles. Self-service high-pressure car wash machines are a new type of car wash machine that uses coins or cards and manual labor to complete the washing process. Domestic manufacturers have continuously innovated in terms of functionality, launching self-service high-pressure car wash machines with multiple functions such as water cleaning, foaming, water waxing, vacuuming, and ozone disinfection.
[0003] In existing car wash technology, car washing typically involves the use of multiple functional water guns, including clean water guns and foam guns. Clean water guns are used to high-pressure rinse dirt off the vehicle, while foam guns are used to apply detergent or foam to the vehicle's surface for better cleaning and lubrication. However, a common problem with existing self-service car wash machines is that users often fail to distinguish between them during operation, or easily confuse the use of clean water guns and foam guns in busy or poorly lit environments. This confusion directly leads to a waste of clean water and detergent; at the same time, it also increases the user's car wash time, reduces operational efficiency, increases frustration, and negatively impacts the user experience. Utility Model Content
[0004] To achieve the above objectives, and to overcome the aforementioned deficiencies, one embodiment of this utility model provides an internet-connected intelligent self-service car wash system to prevent incorrect gun usage. The system ensures the independence and correctness of the clean water and foam water paths through the control of a check valve and a diaphragm pump. By using data feedback from clean water and foam flow meters, combined with an internet-connected intelligent control system, it monitors and intelligently manages the gun usage during the car wash process, preventing users from confusing the clean water gun and the foam gun.
[0005] This utility model provides an internet-connected intelligent self-service car wash system to prevent the misuse of a cleaning gun, which includes:
[0006] A clean water inlet pipe is connected to the first end of an inlet tee. Two parallel pipelines are installed on the clean water inlet pipe; a first check valve is installed on the first parallel pipeline, and a diaphragm pump is installed on the second parallel pipeline.
[0007] Foam inlet pipe, wherein the foam inlet pipe is connected to the second end of the water inlet tee;
[0008] A high-pressure pump, the inlet of which is connected to the third end of an inlet tee;
[0009] The high-pressure tee has an inlet connected to the outlet of a high-pressure pump, a first outlet connected to a clean water output pipe, and a second outlet connected to a foam output pipe.
[0010] A clean water output pipe is connected between the first outlet of the high-pressure tee and the clean water gun, and a clean water flow meter is installed on the clean water output pipe.
[0011] A foam output pipe is installed between the second outlet of the high-pressure tee and the foam gun, and a foam flow meter is installed on the foam output pipe.
[0012] The control board is used to receive signals from the clean water flow meter and the foam flow meter and control the motor to start and stop.
[0013] Furthermore, a pressure relief valve is also connected to the outlet pipe of the diaphragm pump.
[0014] Furthermore, a solenoid valve is installed on the clean water inlet pipe before the two parallel pipes.
[0015] Furthermore, a second check valve is installed on the foam inlet pipe before the water inlet tee.
[0016] Furthermore, a pressure regulating valve is installed between the high-pressure tee and the high-pressure pump.
[0017] Furthermore, the control motherboard is electrically connected to the car wash machine's voice prompt module.
[0018] Furthermore, pressure sensors are installed on the handles of both the water gun and the foam gun.
[0019] The beneficial effects of this utility model are:
[0020] 1. This utility model determines the branch pipe supplying water to the booster pump by installing a water pressure sensor and two parallel branch pipes on the clean water input pipe: if the water pressure sensor measures that the input clean water pressure meets the standard, the clean water flows through the first branch pipe that does not require pressurization to supply water to the booster pump; if the water pressure sensor measures that the input clean water pressure does not meet the standard, the clean water flows through the second branch pipe equipped with a diaphragm valve with a pressurization function to supply water to the booster pump, thus ensuring the cleaning effect and protecting the equipment.
[0021] 2. This utility model uses data feedback from the water flow meter connected to the water output pipe of the water gun and the foam flow meter connected to the foam output pipe of the foam gun, combined with an internet-based intelligent control system, to achieve real-time monitoring and intelligent management of the user's car washing process, preventing confusion and misuse of the water gun and foam gun, and improving the intelligence level and user experience of the car wash machine. Attached Figure Description
[0022] Figure 1 This is a structural schematic diagram of an Internet-connected intelligent self-service car wash machine's error-prevention gun system.
[0023] In the picture:
[0024] Clean water inlet pipe 1, foam inlet pipe 2, clean water outlet pipe 3, foam outlet pipe 4. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, further explanation is provided below in conjunction with the accompanying drawings and embodiments.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or car wash machine that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or car wash machine.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the car wash machine or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] As a specific implementation example, see attached Figure 1 As shown, an internet-connected intelligent self-service car wash machine anti-misuse gun system includes a clean water input pipe 1, a foam input pipe 2, a high-pressure pump, a high-pressure tee, a foam gun, and a clean water gun.
[0029] The clean water inlet pipe 1 is connected to the first end of the inlet tee. Two parallel pipes are installed on the clean water inlet pipe 1. A first check valve is installed on the first parallel pipe, and a diaphragm pump is installed on the second parallel pipe. A pressure relief valve is also connected to the outlet pipe of the diaphragm pump. A solenoid valve and a water pressure sensor (not shown in the figure) are also installed on the clean water inlet pipe 1 before the two parallel pipes. The foam inlet pipe 2 is connected to the second end of the inlet tee. A second check valve is also installed on the foam inlet pipe 2 before the inlet tee.
[0030] The high-pressure pump inlet is connected to the third end of the inlet tee. The high-pressure tee inlet is connected to the outlet of the high-pressure pump. The first outlet is connected to the clean water output pipe 3, and the second outlet is connected to the foam output pipe 4. A pressure regulating valve is also installed on the pipeline between the high-pressure tee and the high-pressure pump. The clean water output pipe 3 is connected between the first outlet of the high-pressure tee and the clean water gun, and a clean water flow meter is installed on the clean water output pipe 3. The foam output pipe 4 is connected between the second outlet of the high-pressure tee and the foam gun, and a foam flow meter is installed on the foam output pipe 4. The clean water gun is connected to the end of the clean water output pipe 3, and the foam gun is connected to the end of the foam output pipe 4.
[0031] The control motherboard (not shown in the figure) is used to receive flow meter signals and control the motor to start and stop; furthermore, the control motherboard is electrically connected to electrical control components such as the car wash machine voice prompt module.
[0032] Furthermore, pressure sensors are installed at the handles of both the water gun and the foam gun, and these pressure sensors are connected to the control motherboard.
[0033] The clean water input pipe 1 forms two independent fluid paths through two parallel branch pipes. A water pressure sensor installed on the clean water input pipe 1 measures the water pressure. Normally, car wash machines have strict requirements for the water pressure entering the booster pump, which must be maintained above 1.4 kg. Insufficient water pressure will directly affect the cleaning effect and may even damage the equipment. However, the clean water pressure is not always up to standard due to external tap water sources, pipe blockages (leaks), etc. Therefore, two branch pipes are designed. If the measured input clean water pressure is up to standard, only the first branch pipe is used. The first branch pipe is equipped with a check valve to prevent backflow during fluid flow, thus ensuring that clean water input pipe 1 can deliver clean water when the fluid only passes through the first branch pipe. If the measured input clean water pressure is below standard, a diaphragm valve is installed on the second branch pipe to provide pressure control for the fluid flow in the second branch pipe, ensuring the subsequent delivery of clean water.
[0034] During operation, when the diaphragm valve is open and the check valve is closed, the clean water in the clean water input pipe 1 flows into the water inlet tee through the second branch pipe; conversely, when the check valve is open and the diaphragm valve is closed, the clean water in the clean water input pipe 1 flows to the clean water gun only through the first branch pipe, thus realizing the delivery of clean water.
[0035] In actual use, there are two safeguards to prevent users from picking up the wrong gun:
[0036] First layer: When the user presses the water cleaning button, the control board obtains the pressure sensor on the handle of the water gun to determine if the user has picked up the correct gun. If the result is that the wrong gun is picked up, the user will be reminded through the voice prompt module and the display screen on the car wash machine, "You have picked up the wrong gun, please pick up the water cleaning gun."
[0037] The second stage: When the user presses the clean water button, the motor starts and pressure is built up in the high-pressure pipeline. If the user pulls the clean water gun, the clean water flow meter is triggered, and the equipment starts normally. If the user fails to hear the warning in time for some reason (such as wearing headphones) and continues to pull the foam gun incorrectly, the foam flow meter on foam output pipe 4 is triggered, the control board immediately cuts off power to the motor to prevent clean water from mixing into the foam high-pressure pipe, and reminds the user again through the voice prompt module and the display screen on the car wash machine: "You have picked up the wrong gun, please pick up the clean water gun." After the user correctly pulls the clean water gun trigger, the clean water flow meter on clean water output pipe 3 is triggered, and the motor starts normally.
[0038] Similarly, when the user presses the foam button, the first control board detects the pressure sensor on the handle of the foam gun to determine if the user has picked up the correct gun and provides voice and display prompts. Simultaneously, the second safety mechanism activates: the motor starts, and pressure is built up in the high-pressure pipeline. If the user pulls the trigger on the foam gun, the foam flow meter is activated, and the equipment starts normally. If the user mistakenly pulls the trigger on the water gun, the water flow meter is activated, the control board immediately cuts off power to the motor to prevent foam from entering the high-pressure water pipeline, and reminds the user via the voice prompt module and the display screen on the car wash machine: "You have picked up the wrong gun, please pick up the foam gun." After the user correctly pulls the trigger on the foam gun, the foam flow meter is activated, and the motor starts normally.
[0039] The system ensures the independence and correctness of the clean water and foam water circuits through the control of check valves and diaphragm pumps. Through data feedback from clean water flow meters and foam flow meters, combined with the Internet-connected intelligent control system, the system achieves real-time monitoring and intelligent management of the car wash process, preventing users from confusing the clean water gun and foam gun during use.
[0040] This utility model provides an internet-connected intelligent self-service car wash system to prevent users from accidentally using the wrong water gun or foam gun, thereby improving user experience, increasing car wash efficiency, and enhancing system safety.
[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0042] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An Internet intelligent self-service car washer mistake-proof gun system, characterized in that, It includes: A clean water input pipe is connected to the first end of an inlet tee; two parallel pipelines are installed on the clean water input pipe, a first check valve is installed on the first parallel pipeline, and a diaphragm pump is installed on the second parallel pipeline. Foam inlet pipe, wherein the foam inlet pipe is connected to the second end of the water inlet tee; A high-pressure pump, the inlet of which is connected to the third end of an inlet tee; The high-pressure tee has an inlet connected to the outlet of a high-pressure pump, a first outlet connected to a clean water output pipe, and a second outlet connected to a foam output pipe. A clean water output pipe is connected between the first outlet of the high-pressure tee and the clean water gun, and a clean water flow meter is installed on the clean water output pipe. A foam output pipe is installed between the second outlet of the high-pressure tee and the foam gun, and a foam flow meter is installed on the foam output pipe. The control board is used to receive signals from the clean water flow meter and the foam flow meter and control the motor to start and stop.
2. The mistake proofing gun use system of an internet smart self-serve car wash according to claim 1, wherein, The diaphragm pump also has an external pressure relief valve connected to its outlet pipe.
3. The mistake proofing gun use system of an internet smart self-serve car wash according to claim 1, wherein, A solenoid valve is installed on the clean water inlet pipe before the two parallel pipes.
4. The mistake proofing gun use system for an internet smart self-serve car wash of claim 1, wherein, A second check valve is installed on the foam inlet pipe, before the water inlet tee.
5. The mistake proofing gun use system for an internet smart self-serve car wash of claim 1, wherein, A pressure regulating valve is installed between the high-pressure tee and the high-pressure pump.
6. The mistake proofing gun use system for an internet smart self-serve car wash of claim 1, wherein, The control motherboard is electrically connected to the car wash machine's voice prompt module.
7. The mistake proofing gun use system of an internet smart self-serve car wash according to claim 1, wherein, Pressure sensors are installed on the handles of both the water gun and the foam gun.