A direct drinking water wastewater recycling car washing machine recycling device
By connecting drinking water machines and car wash machines, and utilizing the coordinated control of check valves and buoyancy valves, the resource utilization of wastewater is achieved, solving the problems of large wastewater discharge and high equipment wear and tear, reducing operating costs and improving water resource utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CANGZHOU SHENXUAN TECHNOLOGY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-21
AI Technical Summary
When existing commercial drinking water equipment and car wash machines operate independently, the wastewater discharge is large, resulting in equipment damage and high operating costs. In addition, the cost of municipal water supply is high, which affects the efficiency of water resource utilization.
By connecting the drinking water machine and the car wash machine through pipelines, adding check valves and buoyancy valves, using purification devices to treat wastewater, and recycling it to the car wash machine's water storage system, the wastewater is prevented from flowing back and the wastewater is utilized as a resource.
It achieves zero wastewater discharge and equipment protection, reduces operating costs, improves water resource utilization efficiency, extends equipment life, and reduces maintenance frequency.
Smart Images

Figure CN224530767U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater recycling technology, and more specifically to a device for recycling and reusing drinking water wastewater from a car wash machine. Background Technology
[0002] In existing technologies, commercial drinking water systems and car wash machines typically operate independently. When commercial drinking water systems use reverse osmosis technology, they discharge 3 liters of wastewater for every 1 liter of pure water produced. Although existing reflux technology can reduce the wastewater ratio to 2:1, it can lead to other serious problems, such as equipment damage, wastewater reflux causing the system pH to rise above 8.5, accelerating RO membrane calcification and failure, and increased TDS affecting the taste of the drinking water. Meanwhile, car wash machines rely on municipal water supplies, resulting in high water costs and exacerbating water shortages.
[0003] To address the aforementioned deficiencies, this application connects the two devices via a pipeline, adds a check valve to prevent backflow, an automatic water control valve with a buoyancy valve, and a filtration device to purify the wastewater, thereby realizing the resource utilization of wastewater and solving the problems of large wastewater discharge, high equipment wear and tear, and high operating costs in the existing technology. Utility Model Content
[0004] This invention provides a device for recycling drinking water wastewater from car washes to solve the problems existing in the prior art.
[0005] To achieve the above objectives, this utility model provides a direct drinking water wastewater recycling and reuse device for a car wash machine, comprising: a direct drinking water machine and a car wash machine, which are connected by a pipeline;
[0006] The drinking water machine is equipped with a water purification device. One end of the water purification device is connected to a natural water source, and the other end is connected to a wastewater tank through a pipe. The wastewater tank is equipped with a drinking water outlet and a drain outlet.
[0007] The car wash machine is equipped with a water storage tank inside. The top of the water storage tank is equipped with a water inlet pipe. One end of the water inlet pipe is connected to a natural water source, and the other end is equipped with a buoyancy valve. The buoyancy valve is located inside the water storage tank. The water storage tank is also equipped with a water outlet pipe.
[0008] The wastewater tank is connected to the water storage tank via a pipe.
[0009] Preferably, a filtration device is also connected between the water purification device and the wastewater tank via a pipe.
[0010] Preferably, the pipeline is also equipped with a check valve.
[0011] Preferably, the water outlet pipe is also equipped with a foam bucket.
[0012] Preferably, the buoyancy valve includes a water inlet pipe with an outlet at the open end. A valve plug is provided inside the water inlet pipe, and a spring device is provided on the outer wall of the valve plug. A sealing ring is provided at one end, and a ball valve is connected to the other end by a soft rope. When the water in the storage tank is insufficient, the valve plug descends, opens the outlet on the water inlet pipe, and automatically replenishes the water in the storage tank.
[0013] Preferably, the length of the valve plug is greater than the length of the water outlet.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] This application utilizes physical grading and reuse technology to directly introduce wastewater into the car wash machine's water storage system, completely avoiding the defects of the reflux process and achieving the dual goals of zero wastewater discharge and equipment protection.
[0016] Through the coordinated control of check valves and buoyancy valves, all wastewater is recycled for car washing, achieving a recovery rate of nearly 100%. The check valves prevent wastewater from flowing back into the drinking water system, reducing RO membrane wear and extending equipment life. The buoyancy valves automatically switch external water sources based on the water level in the storage tank, avoiding downtime and ensuring continuous car washing. The filtration system removes impurities from the wastewater, reducing the risk of pipe blockage and lowering maintenance frequency. In actual operation, wastewater reuse reduces car washing water costs by more than 50%, meeting water conservation requirements. Attached Figure Description
[0017] 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0018] Figure 1 The attached figure is a structural schematic diagram of this utility model.
[0019] Figure 2 The attached figure is a schematic diagram of the internal structure of this utility model.
[0020] Figure 3 The attached figure is a schematic diagram of the buoyancy valve structure of this utility model.
[0021] Reference numerals: 1. Direct drinking water machine; 2. Car wash machine; 3. Pipe; 4. Water purification device; 5. Filter device; 6. Wastewater tank; 7. Check valve; 8. Water storage tank; 9. Inlet pipe; 10. Outlet pipe; 11. Foam tank; 91. Outlet; 92. Valve plug; 93. Sealing ring; 94. Soft rope; 95. Ball valve. Detailed Implementation
[0022] To facilitate understanding by those skilled in the art, various embodiments of this patent will be described below with reference to text and accompanying drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details in the specification should not be used to limit this patent. That is, in some embodiments of this patent, these practical details are not essential. Furthermore, for ease of understanding, some conventional structures and components will be illustrated in the drawings in a simple schematic manner.
[0023] In the description of this patent, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this patent, "a plurality of" means two or more, unless otherwise explicitly specified.
[0025] In this patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this patent.
[0027] Please see the appendix Figure 1-2 The present invention discloses a direct drinking water wastewater recycling and car wash machine reuse device, comprising: a direct drinking water machine 1 and a car wash machine 2, which are connected by a pipe 3;
[0028] The drinking water machine 1 is equipped with a water purification device 4. One end of the water purification device 4 is connected to a natural water source, and the other end is connected to a wastewater tank 6 through a pipe. The wastewater tank 6 is equipped with a drinking water outlet and a drain outlet.
[0029] The car wash machine 2 is equipped with a water storage tank 8 inside. The top of the water storage tank 8 is equipped with a water inlet pipe 9. One end of the water inlet pipe 9 is connected to a natural water source, and the other end is equipped with a buoyancy valve. The buoyancy valve is located inside the water storage tank 8. The water storage tank 8 is also equipped with a water outlet pipe 10.
[0030] The wastewater tank 6 is connected to the water storage tank 8 via pipe 3.
[0031] The water purification device 4 draws water from a natural water source for purification. The purified water is output through the drinking water outlet of the wastewater tank 6, and the wastewater is stored in the wastewater tank 6 and then discharged into the water storage tank 8 through the pipe 3. When washing the car, the wastewater in the water storage tank 8 is used first to realize the reuse of wastewater.
[0032] To further optimize the above technical solution, a filter device 5 is also connected between the water purification device 4 and the wastewater tank 6 via a pipe.
[0033] The filtration device 5 uses various filtration materials, such as activated carbon, PP cotton, and ultrafiltration membranes, to further filter the water source.
[0034] To further optimize the above technical solution, a check valve 7 is also provided on the pipeline 3.
[0035] A check valve 7 is installed 30cm from the outlet of wastewater tank 6. The check valve 7 only allows wastewater to flow from wastewater tank 6 to water storage tank 8, preventing water in water storage tank 8 from flowing back to drinking water machine 1. When the water pressure of the car wash machine is >0.25MPa, it automatically locks to prevent car wash water (which may contain foam or impurities) from contaminating the internal pipes of the drinking water machine, protecting the water purification system and RO membrane of the drinking water machine, and ensuring the safety of drinking water quality.
[0036] To further optimize the above technical solution, a foam bucket 11 is also provided on the water outlet pipe 10.
[0037] The water outlet pipe 10 is connected in series with a 10L foam tank 11, which contains car wash foam agent. When water from the storage tank 8 flows out through the water outlet pipe 10, the water flow mixes with the foam agent in the foam tank 11 to form car wash foam, enhancing the cleaning power and improving the car wash effect. The foam tank 11 is equipped with a controller, which can freely switch between clean water and foam agent mixture, enabling the equipment to have both water supply and foaming functions, thus improving its practicality.
[0038] Please see Figure 3To further optimize the above technical solution, the buoyancy valve includes a water inlet pipe 9, an outlet 91 at the open end of the water inlet pipe 9, a valve plug 92 inside the water inlet pipe 9, a spring device on the outer wall of the valve plug 92, a sealing ring 93 at one end, and a ball valve 95 connected to the other end by a soft rope 94. When the water in the water storage tank 8 is insufficient, the valve plug 92 descends, opening the outlet 91 on the water inlet pipe 9 to automatically replenish the water in the water storage tank 8.
[0039] When the buoyancy valve is replenished with water, if the water level in the storage tank 8 is less than 5L, the ball valve 95 pulls down the soft rope 94 due to gravity, compressing the spring and causing the valve plug 92 to move down 8mm, thus opening the outlet 91 to replenish water.
[0040] When the buoyancy valve is closed, if the water level is ≥5L, the ball valve 95 floats up and pulls the valve plug 92 upward due to the spring force, and the sealing ring 93 presses against the outlet.
[0041] To further optimize the above technical solution, the length of the valve plug 92 is greater than the length of the outlet 91.
[0042] When the buoyancy valve is closed, the valve plug 92 can completely cover the outlet 91, and together with the sealing ring 93, a tight seal is achieved to prevent external water from leaking when the water level in the water tank 8 is sufficient, thus saving water resources and ensuring the reliability of the buoyancy valve.
[0043] The wastewater from the direct drinking water system is continuously injected into the storage tank 8 as a priority water source. When the wastewater supply is insufficient, the buoyancy valve automatically opens the external water source to maintain a minimum water level of 5L in the storage tank; when the water level exceeds the upper limit of the storage tank, it is discharged through the top overflow outlet. The car wash machine always prioritizes the use of wastewater, only adding new water when the water level is insufficient, achieving zero water waste.
[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A device for recycling drinking water wastewater from a car wash machine, characterized in that, include: A drinking water machine (1) and a car wash machine (2) are connected by a pipe (3); The direct drinking water machine (1) is equipped with a water purification device (4) inside. One end of the water purification device (4) is connected to a natural water source, and the other end is connected to a wastewater tank (6) through a pipe. The wastewater tank (6) is equipped with a direct drinking water outlet and a drain outlet. The car wash machine (2) is equipped with a water storage tank (8) inside. The top of the water storage tank (8) is equipped with a water inlet pipe (9). One end of the water inlet pipe (9) is connected to a natural water source, and the other end is equipped with a buoyancy valve. The buoyancy valve is located inside the water storage tank (8). The water storage tank (8) is also equipped with a water outlet pipe (10). The wastewater tank (6) is connected to the water storage tank (8) via a pipe (3).
2. The direct drinking water wastewater recycling and reuse device for car wash machines according to claim 1, characterized in that, A filter device (5) is also connected to the water purification device (4) and the wastewater tank (6) via a pipe.
3. The direct drinking water wastewater recycling and reuse device for car wash machines according to claim 1, characterized in that, The pipeline (3) is also equipped with a check valve (7).
4. The direct drinking water wastewater recycling and reuse device for car wash machines according to claim 1, characterized in that, A foam bucket (11) is also provided on the water outlet pipe (10).
5. The direct drinking water wastewater recycling and reuse device for car wash machines according to claim 1, characterized in that, The buoyancy valve includes an inlet pipe (9), an outlet (91) at the open end of the inlet pipe (9), a valve plug (92) inside the inlet pipe (9), a spring device on the outer wall of the valve plug (92), a sealing ring (93) at one end, and a ball valve (95) connected to the other end by a soft rope (94). When the water in the storage tank (8) is insufficient, the valve plug (92) descends, opens the outlet (91) on the inlet pipe (9), and automatically replenishes the water in the storage tank (8).
6. The direct drinking water wastewater recycling and reuse device for car wash machines according to claim 5, characterized in that, The length of the valve plug (92) is greater than the length of the outlet (91).