Boiler water treatment wastewater recycling for car washing device
By designing a boiler concentrate recovery device adapted to industrial sites, and using a combination of float level control and electric heating tape, the problems of concentrate collection and utilization as well as freeze protection were solved, achieving efficient utilization of water resources and stable system operation.
Patent Information
- Application Number
- CN202522661222.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-16
AI Technical Summary
In existing technologies, boiler reverse osmosis concentrate cannot be effectively collected and utilized, resulting in water waste and increased water costs for enterprises. Furthermore, it is prone to freezing in cold regions, affecting system operation and limiting its application throughout the year.
A device was designed that includes a wastewater collection unit, a water level buffer unit, a transfer unit, a water supply unit, and an antifreeze and heat preservation unit. It adopts a combination of float level control and electric heating tape to achieve automatic and stable water supply and antifreeze functions.
It achieves full collection and utilization of concentrated water, reduces fresh water consumption and production costs, ensures stable operation of the system in cold regions, and has the capability for year-round application.
Smart Images
Figure CN224930315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial wastewater recycling and energy conservation and environmental protection technology, specifically to a device for reusing boiler water treatment wastewater for car washing. Background Technology
[0002] In the on-site production process of emulsion explosive matrix, the steam boiler requires pure water treated by a reverse osmosis pure water treatment system. While producing pure water, the reverse osmosis system generates a large amount of concentrated water, which is currently discharged directly as wastewater, wasting water resources and increasing the company's water costs. Existing technologies lack simple, low-cost systems for the effective collection and rational utilization of this concentrated water, especially in non-production water use areas such as car washing, where the cascade utilization of water resources is not achieved. Furthermore, in winter or cold regions, the collected concentrated water is highly susceptible to freezing during storage and transportation, causing the entire car wash recycling system to malfunction or even damage the equipment, limiting the year-round application of this technology. Therefore, there is an urgent need for a boiler concentrated water recycling device that can adapt to industrial environments, provide automatic and stable water supply, has antifreeze capabilities, and is specifically designed for car washing applications. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a boiler concentrate recycling device that can adapt to industrial site environment, realize automatic and stable water supply, has antifreeze capability, and is specifically designed for car washing.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a device for reusing boiler water treatment wastewater for car washing, including a wastewater collection unit, a water level buffer unit, a transfer unit, a water supply unit, and an antifreeze and heat preservation unit. The wastewater collection unit includes a collection tank. The top of the collection tank is equipped with a concentrated water inlet pipe that is connected to the concentrated water discharge port of the reverse osmosis pure water treatment system. An overflow pipe is provided on one side wall of the collection tank, and a first float level switch is provided inside it. A tap water pipe is provided on the other side of the collection pipe, and a solenoid valve is provided on the tap water pipe. The solenoid valve is also connected to the first float as a switch signal. When the water level in the collection tank is lower than the set lower limit, the first float level switch triggers the solenoid valve to open and replenish the tap water. The water level buffer unit and the transfer unit include a transfer tank, which is located on one side of the collection tank. The collection pipe and the transfer tank are connected by a connecting pipe. The transfer tank is equipped with a second float level switch to control the opening and closing of the connecting pipe. The water supply unit includes a water pump installed on the outlet pipe of the transfer tank, and the water pump is connected in sequence to a filter, a booster pump, and the car wash gun connection port of the car wash equipment. The antifreeze and heat preservation unit includes an insulation layer on the outer wall of the collection tank and the transfer tank, an electric heat tracing cable wrapped around the outside of the concentrate inlet pipe, connecting pipe, overflow pipe and transfer tank outlet pipe, and a thermostat electrically connected to the electric heat tracing cable for controlling its opening and closing according to the ambient temperature.
[0005] Furthermore, both the bottom of the collection tank and the bottom side wall of the transfer tank are equipped with vent valves.
[0006] Furthermore, the insulation layer is a polyurethane foam layer or a rock wool insulation layer.
[0007] Furthermore, transparent liquid level observation windows are provided on the collection tank and transfer bucket.
[0008] Furthermore, the start-up temperature of the thermostat is set to 3-5℃.
[0009] The beneficial effects of this utility model are as follows: Highly targeted and with significant resource-saving benefits: Specifically designed for the needs of reverse osmosis concentrate from industrial boilers and on-site car washing, it recycles and reuses all the originally waste concentrate, greatly reducing the consumption of fresh tap water and wastewater discharge, thereby reducing production costs and environmental burden.
[0010] Stable and reliable operation: The system adopts a dual-container design of "collection tank + transfer tank" and a two-stage float level control to achieve buffering and stable water supply. The collection tank mainly receives and stores intermittently discharged concentrated water, while the transfer tank serves as a water supply buffer pool to ensure continuous and stable water pressure and volume during car wash operations.
[0011] Capable of year-round operation (outstanding practicality): It innovatively integrates a complete anti-freeze and insulation unit. The insulation layer reduces heat loss, the electric heating cable actively heats at low temperatures, and the thermostat enables automatic control, fundamentally solving the problem of pipeline and tank freezing in winter, ensuring the normal use of the system in cold regions, and expanding the application area.
[0012] High degree of automation and easy maintenance: Water level is automatically controlled via float switch and solenoid valve, eliminating the need for frequent manual intervention. A drain valve facilitates maintenance and handling of extreme situations. Modular structure with major components made from commonly used industrial parts, facilitating installation, maintenance, and replacement.
[0013] The water quality meets the requirements for car washing: the filter removes suspended particles that may be carried in the concentrated water to prevent clogging of the car wash gun; the booster pump provides sufficient rinsing pressure to ensure the cleaning effect, so that the recycled water fully meets the requirements for cleaning engineering vehicles. Attached Figure Description
[0014] Figure 1 This invention relates to a specific embodiment of a boiler water treatment wastewater reuse device for car washing.
[0015] Label Explanation 1. Collection tank; 2. Transfer tank; 3. Concentrate inlet pipe; 4. First float level switch; 5. Overflow pipe; 6. Connecting pipe; 7. Second float level switch; 8. Outlet pipe of transfer tank; 9. Water pump; 10. Filter; 11. Booster pump; 12. Car wash gun connection port; 13. Insulation layer; 14. Electric heating tape; 15. Thermostat; 16. Tap water pipe; 17. Solenoid valve; 18. Drain valve; 19. Liquid level observation window. Detailed Implementation
[0016] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0017] Please refer to Figure 1 A device for reusing boiler water treatment wastewater for car washing includes a wastewater collection unit, a water level buffer unit, a transfer unit, a water supply unit, and an antifreeze and heat preservation unit. The wastewater collection unit includes a collection tank 1. The top of the collection tank 1 is equipped with a concentrate inlet pipe 3 that is connected to the concentrate discharge port of the reverse osmosis pure water treatment system. An overflow pipe 5 is provided on one side wall of the collection tank 1. A first float level switch 4 is provided inside the overflow pipe. A tap water pipe 16 is provided on the other side of the collection pipe. A solenoid valve is provided on the tap water pipe 16. The solenoid valve is also connected to the first float as a switch signal. When the water level in the collection tank 1 is lower than the set lower limit, the first float level switch 4 triggers the solenoid valve 17 to open and replenish the tap water. The water level buffer unit and the transfer unit include a transfer tank 2, which is located on one side of the collection tank 1. The collection pipe and the transfer tank 2 are connected by a connecting pipe. The transfer tank 2 is equipped with a second float level switch 7, which is used to control the opening and closing of the connecting pipe 6. The water supply unit includes a water pump 9 installed on the water outlet pipe 8 of the transfer tank 2. The water pump 9 is connected in sequence to a filter 10, a booster pump 11, and a car wash gun connection port 12 of the car wash equipment. The antifreeze and heat preservation unit includes an insulation layer 13 on the outer wall of the collection tank 1 and the transfer tank 2, an electric heat tracing cable 14 wrapped around the outside of the concentrated water inlet pipe 3, the connecting pipe, the overflow pipe and the transfer tank outlet pipe, and a thermostat 15 electrically connected to the electric heat tracing cable 14 for controlling its opening and closing according to the ambient temperature.
[0018] In the above embodiment, the concentrated water generated by the boiler reverse osmosis system continuously enters the collection tank 1. When a car wash is required, the water pump 9 and the booster pump 11 are turned on. It should be noted that the transfer tank 2 is equipped with a lid, allowing the water to be covered. Water is pumped out by the water pump 9 through the outlet pipe 8 of the transfer tank 2, first passing through the filter 10 to intercept any fine particles. Then it enters the booster pump 11, which increases the water pressure to a suitable level for car washing. Finally, it is output through the car wash gun connection port 12 for operators to use a high-pressure water gun to wash vehicles. When the water level in the transfer tank 2 drops, the second float level switch 7 controls the collection tank 1 to replenish water. If the water level in the collection tank 1 is too low due to insufficient concentrated water replenishment, the first float level switch 4 will activate the tap water pipe 16 to replenish water. The entire process operates automatically, providing a stable water flow for car washing. In winter, the antifreeze insulation unit automatically operates to prevent freezing in any part.
[0019] As an optional implementation, both the bottom of the collection tank 1 and the bottom side wall of the transfer tank 2 are provided with an air vent valve 18.
[0020] In the above embodiments, an vent is provided for easy maintenance and to cope with extreme situations. The structure is modular, and the main components are all commonly used industrial parts, which facilitates installation, maintenance and replacement.
[0021] As an optional implementation, the insulation layer 13 is a polyurethane foam layer or a rock wool insulation layer 13.
[0022] In the above embodiments, a highly efficient passive insulation layer 13 is formed by tightly wrapping the tank and transfer barrel 2 with a polyurethane foam layer or rock wool insulation layer 13. This design works in conjunction with the active heating system of the electric heating cable 14, which on the one hand greatly reduces the heat loss of the system in low-temperature environments and reduces the energy consumption of heat tracing; on the other hand, it ensures that under extremely cold conditions, the heat energy is concentrated to prevent the water from freezing, thereby fundamentally guaranteeing the stability and reliability of the device in severe winters and achieving true year-round operation.
[0023] As an optional implementation, the collection tank 1 and the transfer tank 2 are provided with transparent liquid level observation windows 19.
[0024] In the above embodiments, the liquid level observation window 19 provided on the tank and the intermediate special barrel facilitates intuitive understanding of the water level during daily inspections.
[0025] As an optional implementation, the start-up temperature of the thermostat 15 is set to 3-5°C.
[0026] In the above embodiments, when the temperature is lower than the preset value, such as 4°C, the thermostat 15 automatically starts the electric heating tape 14 for heating; when the temperature rises back to above the safe value, it automatically shuts off, realizing automatic control of energy saving and antifreeze.
[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A device for reusing boiler water treatment wastewater for car washing, characterized in that, It includes a wastewater collection unit, a water level buffer unit, a transfer unit, a water supply unit, and a freeze protection and insulation unit; The wastewater collection unit includes a collection tank. The top of the collection tank is equipped with a concentrated water inlet pipe that is connected to the concentrated water discharge port of the reverse osmosis pure water treatment system. An overflow pipe is provided on one side wall of the collection tank, and a first float level switch is provided inside it. A tap water pipe is provided on the other side of the collection pipe, and a solenoid valve is provided on the tap water pipe. The solenoid valve is also connected to the first float as a switch signal. When the water level in the collection tank is lower than the set lower limit, the first float level switch triggers the solenoid valve to open and replenish the tap water. The water level buffer unit and the transfer unit include a transfer tank, which is located on one side of the collection tank. The collection pipe and the transfer tank are connected by a connecting pipe. The transfer tank is equipped with a second float level switch to control the opening and closing of the connecting pipe. The water supply unit includes a water pump installed on the outlet pipe of the transfer tank, and the water pump is connected in sequence to a filter, a booster pump, and the car wash gun connection port of the car wash equipment. The antifreeze and heat preservation unit includes an insulation layer on the outer wall of the collection tank and the transfer tank, an electric heat tracing cable wrapped around the outside of the concentrate inlet pipe, connecting pipe, overflow pipe and transfer tank outlet pipe, and a thermostat electrically connected to the electric heat tracing cable for controlling its opening and closing according to the ambient temperature.
2. The boiler water treatment wastewater reuse device according to claim 1, characterized in that, Both the bottom of the collection tank and the bottom side wall of the transfer tank are equipped with vent valves.
3. The boiler water treatment wastewater reuse device according to claim 1, characterized in that, The insulation layer is either a polyurethane foam layer or a rock wool insulation layer.
4. The boiler water treatment wastewater reuse device according to claim 1 for use in a car wash, characterized in that, The collection tank and transfer container are equipped with transparent liquid level observation windows.
5. The boiler water treatment wastewater reuse device according to claim 1, characterized in that, The start-up temperature of the thermostat is set to 3-5℃.