Multi-temperature zone commercial drinking water platform

Abstract

This utility model relates to the field of water purification system technology, specifically to a multi-temperature zone commercial drinking water platform, including a pre-filtration device and a drainage device. The usable water produced by the pre-filtration device is input into the temperature-controlled drainage device. The drainage device includes a hot water tank, a cold water tank, and a UV sterilizer arranged in parallel. The output end of the hot water tank is a hot water outlet. A preheater is installed on the first branch pipe, and the first output end of the preheater directly outputs water, forming a warm water outlet. The output end of the cold water tank is connected to the UV sterilizer, and the output end of the UV sterilizer is a cold water outlet. This utility model improves water quality through multi-stage filtration. The multi-stage pre-filtration, post-activated carbon filtration, and post-heating sterilization or UV sterilization achieve multiple sterilization processes, ensuring drinking water safety. By combining the cold water tank with a refrigeration unit and the hot water tank with a preheater, it can supply ice water, room temperature water, and hot water, meeting the drinking water supply needs of different groups at different temperatures.

Description

Technical Field

[0001] This utility model relates to the field of water purification system technology, and in particular to a multi-temperature zone commercial drinking water platform. Background Technology

[0002] Residual chlorine in tap water, secondary pollution hidden in pipes, and microplastic concerns in bottled water... These unseen risks pose safety hazards that, if they occur, can easily trigger large-scale mass health incidents, damage a company's image, and affect its subsequent industrial vitality.

[0003] Based on surveys of various public places such as train stations, hospitals, airports, and schools, commercial drinking water platforms mostly use direct heating or filtration processes to treat tap water. Direct heating involves heating tap water to 100℃ for high-temperature disinfection and sterilization; the filtration process involves equipment manufacturers using a four- or five-stage filtration process, where tap water undergoes five stages of filtration: PP + activated carbon + PP + RO + post-activated carbon, for deep treatment.

[0004] In direct heating systems, prolonged operation leads to scale buildup inside the heating tank, resulting in low heat exchange efficiency, high power consumption, and energy waste. Furthermore, scale can easily detach from the tank, causing pipe blockages and affecting normal water output; even if water is output, its quality deteriorates. Direct heating systems typically only offer cold and hot water modes. In contrast, four- or five-stage filtration systems usually only output ambient temperature water, often lacking sterilization measures after multiple filtration stages, posing safety hazards.

[0005] To address the problems in the existing technology, this utility model provides a multi-temperature zone commercial drinking water platform. Utility Model Content

[0006] The purpose of this utility model is to provide a multi-temperature zone commercial drinking water platform to solve the technical problem that existing direct heating equipment and multi-stage filtration water supply equipment have relatively limited outlet water temperature zones, which cannot meet the drinking water needs of public areas in a fast-paced life.

[0007] The technical solution of this utility model is: a multi-temperature zone commercial drinking water platform, including a pre-filtration device and a drainage device. The pre-filtration device includes multiple filters, which are connected in series through pipelines to form a filtration link. The wastewater generated by the filtration link is connected to the sewer, and the usable water generated by the filtration loop is sent to the temperature-controlled drainage device through pipelines. The drainage device includes a hot water tank, a cold tank, and a UV sterilizer arranged in parallel.

[0008] The pre-filter is connected to the hot water tank via a first branch pipe, and the output end of the hot water tank is the hot water outlet.

[0009] A preheater is installed on the first branch pipeline. The first input end of the preheater is connected to the first branch pipeline. The second output end and the second input end of the preheater are connected to the inlet and outlet of the heating pipe in the hot water tank, respectively. A first heat exchange circuit is formed between the preheater and the hot water tank. Water is directly discharged from the first output end of the preheater to form a warm water outlet.

[0010] The pre-filter is connected to the cold tank via a second branch pipe; a UV sterilizer is connected to the output end of the cold tank, and the output end of the UV sterilizer is a cold water outlet.

[0011] Preferably, a refrigeration unit is connected to the heat exchange tube inside the cold tank, and the refrigeration unit includes a compressor, a condenser and a dryer connected in sequence by pipelines;

[0012] The output end of the dryer is connected to the input end of the heat exchange tube, and the input end of the compressor is connected to the output end of the heat exchange tube, forming a second heat exchange circuit between the refrigeration unit and the cold tank to cool the water in the cold tank.

[0013] Preferably, the pre-filtration device includes a primary filter, a secondary filter, a tertiary filter, a booster pump, an RO reverse osmosis structure, a constant pressure tank, and a post-activated carbon filter connected in sequence by pipelines.

[0014] A low-pressure protection switch and a first inlet solenoid valve are installed on the pipeline between the output end of the three-stage filter and the booster pump; a high-pressure protection switch and an online TDS tester are installed on the pipeline between the RO reverse osmosis structure and the constant pressure tank.

[0015] Preferably, a first temperature sensor and a first guide rod level gauge are installed on the hot water tank to detect the hot water temperature and volume respectively;

[0016] The hot water tank is equipped with a hot water discharge solenoid valve, a drain solenoid valve, an overflow pipe, and an exhaust port; a third inlet solenoid valve is installed on the first branch pipe upstream of the preheater.

[0017] Preferably, a second temperature sensor and a second guide rod level gauge are installed on the cold tank to detect the temperature and volume of the cold water in the cold tank.

[0018] A second inlet solenoid valve is installed on the second branch pipe, and a first outlet solenoid valve is installed on the outlet pipe of the cold tank.

[0019] Preferably, a third temperature sensor and a second outlet solenoid valve are provided on the output pipeline corresponding to the first output end of the preheater.

[0020] Preferably, a concentrate proportioning valve is installed on the outlet pipe of the filtration link.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] This invention improves water quality through a multi-stage filtration system, including a pre-filter, a post-filter (activated carbon filter), and a subsequent heating or UV sterilizer, achieving multiple sterilization processes to ensure drinking water safety. Furthermore, by combining a cold tank with a refrigeration unit and a hot water tank with a preheater, it can supply ice water, room temperature water, and hot water, meeting the drinking water temperature needs of different populations. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the structure of the multi-temperature zone commercial drinking water platform in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the multi-temperature zone commercial drinking water platform in Embodiment 2 of this utility model;

[0026] Figure 3 This is a schematic diagram of the water treatment operation process of the multi-temperature zone commercial drinking water platform in Embodiment 2 of this utility model;

[0027] The components include: 1. Pre-filter; 2. Hot water tank; 3. Cold tank; 4. UV sterilizer; 5. Preheater; 6. Refrigeration unit; 7. Heating tube; 8. Heat exchange tube; 9. Concentrate proportioning valve.

[0028] 10. First inlet solenoid valve; 11. Primary filter; 12. Secondary filter; 13. Tertiary filter; 14. Booster pump; 15. RO reverse osmosis structure; 16. Constant pressure tank; 17. Post-activated carbon filter; 18. Low pressure protection switch; 19. High pressure protection switch; 20. TDS online tester;

[0029] 21. First temperature sensor; 22. First guide rod level gauge; 23. Hot water discharge solenoid valve; 24. Drain solenoid valve; 25. Vent port; 26. Third water inlet solenoid valve; 27. Overflow pipe; 28. Third temperature sensor; 29. ​​Second water outlet solenoid valve;

[0030] 31. Second temperature sensor; 32. Second guide rod level gauge; 33. Second inlet solenoid valve; 34. First outlet solenoid valve; 61. Compressor; 62. Condenser; 63. Dryer;

[0031] 100, First branch pipeline; 200, Second branch pipeline. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments:

[0033] like Figure 1 As shown, a multi-temperature zone commercial drinking water platform includes a pre-filtration device 1 and a drainage device. The pre-filtration device 1 includes multiple filters, which are connected in series through pipelines to form a filtration link. The usable water produced by the pre-filtration device 1 is connected to the temperature-controlled drainage device through pipelines. The wastewater produced by the pre-filtration device 1 is connected to the sewer. A concentrate proportioning valve 9 is installed on the wastewater output pipeline to control the wastewater discharge.

[0034] In Embodiment 1 or other embodiments, specifically, the pre-filter device 1 includes a primary filter 11, a secondary filter 12, a tertiary filter 13, a booster pump 14, an RO reverse osmosis structure 15, a constant pressure tank 16, and a post-activated carbon filter 17 connected in sequence by pipelines.

[0035] A low-pressure protection switch 18 and a first inlet solenoid valve 10 are installed on the pipeline between the output end of the three-stage filter 13 and the booster pump 14; a high-pressure protection switch 19 and an online TDS meter 20 are installed on the pipeline between the RO reverse osmosis structure 15 and the constant pressure tank 16. The system monitors the water output in real time, and alarms are triggered if water quality issues arise, ensuring the safety of the water output.

[0036] The primary filter 11 incorporates a 5µm PP meltblown filter element, which efficiently intercepts large particulate impurities such as rust, sediment, and colloids in the water, achieving a filtration accuracy of over 99.5%. The secondary filter 12 incorporates a coconut shell activated carbon filter element with an iodine value of 1100, which removes organic matter, residual chlorine, and disinfection byproducts from tap water, as well as small amounts of heavy metal ions such as lead and mercury, reducing the load on downstream treatment processes. It also serves as a pre-treatment protection stage for the RO membrane, preventing organic matter from clogging the membrane pores and extending its lifespan. The tertiary filter 13 incorporates a 1µm PP meltblown filter element, acting as the final line of defense in the filter system. This significantly extends the lifespan of the downstream RO membrane and post-activated carbon filter, preventing clogging caused by large particulate contaminants. The booster pump 14 increases the water pressure within the pipeline, providing the necessary production water pressure for the RO membrane filtration. The RO reverse osmosis structure 15 features a built-in RO membrane filter with a filtration precision of 0.0001µm. Utilizing the membrane's own pore structure, it efficiently removes heavy metal ions and dissolved salts, thoroughly filtering out bacteria, viruses, and microbial spores. The membrane equipment achieves a desalination rate of 95%–99%. The constant pressure tank 16, based on an internal air-bag diaphragm design, absorbs water hammer impacts generated during pump start-up and shutdown, preventing pipe vibration and joint leaks, maintaining constant outlet water pressure; reducing frequent pump start-up and shutdown, protecting the overall lifespan of the water dispenser; and also serving as a water storage function, maintaining basic water needs during water or power outages. The post-activated carbon filter 17 contains a coconut shell activated carbon filter with an iodine value of 1000. As the final filtration stage, it removes sulfides and other odor molecules, improving taste.

[0037] The drainage system includes a hot water tank 2, a cold tank 3, and a UV sterilizer 4 arranged in parallel.

[0038] The usable water from the pre-filter 1 is discharged from the outlet of the post-activated carbon filter 17 and connected to the hot water tank 2 through the first branch pipe 100. The output end of the hot water tank 2 is the hot water outlet.

[0039] A first temperature sensor 21 and a first guide rod level gauge 22 are installed on the hot water tank 2 to detect the hot water temperature and volume, respectively. A hot water discharge solenoid valve 23, an air vent solenoid valve 24, a third water inlet solenoid valve 26, an overflow pipe 27, and an air vent 25 are installed on the hot water tank 2 to intelligently control the water inlet and outlet of the hot water tank 2 and balance the air pressure inside the tank.

[0040] The usable water from the pre-filter 1 is discharged from the outlet of the post-activated carbon filter 17 and connected to the cold tank 3 through the second branch pipe 200. The output end of the cold tank 3 is connected to the UV sterilizer 4, and the output end of the UV sterilizer 4 is the cold water outlet.

[0041] A second temperature sensor 31 and a second guide rod level gauge 32 are installed on the cold tank 3 to detect the temperature and volume of the cold water in the cold tank 3. A second inlet solenoid valve 33 is installed on the second branch pipe 200, and a first outlet solenoid valve 34 is installed on the outlet pipe of the cold tank 3 to control the inlet and outlet of the cold tank 3.

[0042] The usable water from the pre-filter 1 is discharged from the outlet of the post-activated carbon filter 17 and connected to the UV sterilizer 4 through the third branch pipe. The cold water can be directly discharged from the UV sterilizer 4 for use, or it can be cooled in the cold tank 3 and then discharged from the UV sterilizer 4 for use.

[0043] The treated drinking water is heated to 90-95℃ by a heater in the hot water tank 2, providing a hot water source for users. The treated water undergoes heat exchange in the cold tank 3 through heat exchange tubes 8 to provide ice water. The UV sterilizer 4 emits ultraviolet light with a wavelength of 254nm to destroy the DNA / RNA structure of pathogens such as bacteria and viruses, rendering them unable to reproduce, achieving a sterilization rate of up to 99.99%.

[0044] This embodiment uses a three-stage pre-filtration system and a post-activated carbon filter to efficiently filter water and prevent scale buildup in subsequent equipment. At the drainage end, hot water is supplied after high-temperature heating and sterilization, while cold water is supplied after being sterilized by a UV sterilizer 4, thus improving water safety.

[0045] In detail, the heat exchange tubes 8 inside the cold tank 3 are kept cool by refrigerant or by other means. For example, a refrigeration unit 6 is connected to the heat exchange tubes 8 inside the cold tank 3. The refrigeration unit 6 includes a compressor 61, a condenser 62, and a dryer 63 connected in sequence by piping. See Appendix Figure 2 As shown, the output end of the dryer 63 is connected to the input end of the heat exchange tube 8, and the input end of the compressor 61 is connected to the output end of the heat exchange tube 8, forming a second heat exchange loop between the refrigeration unit 6 and the cold tank 3 to cool the water in the cold tank 3. This maintains a long-term low temperature and continuously supplies cold water.

[0046] In Embodiment 2 or other embodiments, a multi-temperature zone commercial drinking water platform includes the pre-filtration device 1 and drainage device as described in Embodiment 1. The drainage device includes a hot water tank 2, a cold tank 3, and a UV sterilizer 4 arranged side by side. (See attached diagram.) Figure 2 As shown, a refrigeration unit 6 is connected to the cold tank 3. The refrigeration unit 6 and the heat exchange tubes inside the cold tank 3 form a second heat exchange circuit to cool the water entering the cold tank 3.

[0047] A preheater 5 is installed at the inlet of the hot water tank 2, and a third inlet solenoid valve 26 is installed on the first branch pipe 100 upstream of the preheater 5. A third temperature sensor 28 and a second outlet solenoid valve 29 are installed on the output pipe corresponding to the first output end of the preheater 5.

[0048] In detail, the first input end of the preheater 5 is connected to the first branch pipe 100, and the second output end and the second input end of the preheater 5 are connected to the inlet and outlet of the heating pipe 7 in the hot water tank 2 respectively, forming a first heat exchange circuit between the preheater 5 and the hot water tank 2. The first output end of the preheater 5 directly outputs water to form a warm water outlet.

[0049] See attached document Figure 3 The document provides a water supply process flow diagram corresponding to Example 2. It shows that the pre-filter (three-stage filtration) and post-filter (activated carbon filtration) efficiently filter the water, preventing scale buildup in subsequent equipment. At the drain end, hot water is supplied after high-temperature heating and sterilization. For the cold water outlet, it is sterilized by UV sterilizer 4 before supplying water, improving water safety. Usable water passing through preheater 5 is initially heated and directly discharged as warm water. This usable water then enters hot water tank 2 for further heating to obtain hot water. This expands the water temperature range and makes water use more convenient.

[0050] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A multi-temperature zone commercial drinking water platform, comprising a pre-filtration device and a drainage device, wherein the pre-filtration device includes multiple filters connected in series via pipelines to form a filtration loop, wastewater generated by the filtration loop is discharged into a sewer, and usable water generated by the filtration loop is sent to the temperature-controlled drainage device via pipelines; characterized in that, The drainage device includes a hot water tank, a cold tank, and a UV sterilizer arranged in parallel. The pre-filter is connected to the hot water tank via a first branch pipe, and the output end of the hot water tank is the hot water outlet. A preheater is installed on the first branch pipeline. The first input end of the preheater is connected to the first branch pipeline. The second output end and the second input end of the preheater are connected to the inlet and outlet of the heating pipe in the hot water tank, respectively. A first heat exchange circuit is formed between the preheater and the hot water tank. Water is directly discharged from the first output end of the preheater to form a warm water outlet. The pre-filter is connected to the cold tank via a second branch pipe; a UV sterilizer is connected to the output end of the cold tank, and the output end of the UV sterilizer is a cold water outlet.

2. The multi-temperature zone commercial drinking water platform according to claim 1, characterized in that, A refrigeration unit is connected to the heat exchange tubes inside the cold tank. The refrigeration unit includes a compressor, a condenser, and a dryer connected in sequence by pipelines. The output end of the dryer is connected to the input end of the heat exchange tube, and the input end of the compressor is connected to the output end of the heat exchange tube, forming a second heat exchange circuit between the refrigeration unit and the cold tank to cool the water in the cold tank.

3. The multi-temperature zone commercial drinking water platform according to claim 1, characterized in that, The pre-filtration device includes a primary filter, a secondary filter, a tertiary filter, a booster pump, an RO reverse osmosis structure, a constant pressure tank, and a post-activated carbon filter connected in sequence by pipelines. A low-pressure protection switch and a first inlet solenoid valve are installed on the pipeline between the output end of the three-stage filter and the booster pump. A high-pressure protection switch and an online TDS tester are installed on the pipeline between the RO reverse osmosis structure and the constant pressure tank.

4. The multi-temperature zone commercial drinking water platform according to claim 1, characterized in that, A first temperature sensor and a first guide rod level gauge are installed on the hot water tank to detect the hot water temperature and volume, respectively. The hot water tank is equipped with a hot water discharge solenoid valve, a drain solenoid valve, an overflow pipe, and an exhaust port; a third inlet solenoid valve is installed on the first branch pipe upstream of the preheater.

5. A multi-temperature zone commercial drinking water platform according to claim 2, characterized in that, A second temperature sensor and a second guide rod level gauge are installed on the cold tank to detect the temperature and volume of the cold water in the cold tank. A second inlet solenoid valve is installed on the second branch pipe, and a first outlet solenoid valve is installed on the outlet pipe of the cold tank.

6. A multi-temperature zone commercial drinking water platform according to claim 1, characterized in that, A third temperature sensor and a second water outlet solenoid valve are installed on the output pipeline corresponding to the first output end of the preheater.

7. A multi-temperature zone commercial drinking water platform according to claim 1, characterized in that, A concentrate proportioning valve is installed on the outlet pipe of the filtration link.

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