Multifunctional commercial drinking water supply system

Abstract

The invention relates to the technical field of water purification systems, in particular to a multifunctional commercial drinking water supply system which comprises a front filtering device and a drainage device, and usable water generated by the front filtering device is input into a temperature control drainage device; the drainage device comprises a hot water tank, a cold tank and a UV sterilizer which are arranged in parallel; the output end of the hot water tank is a hot water outlet; a preheater is arranged on the first branch pipeline, and a first output end of the preheater directly discharges water to form a warm water outlet; the output end of the cold tank is connected with the UV sterilizer, and the output end of the UV sterilizer is a cold water outlet. The water quality is improved through multi-stage filtration, multiple sterilization is realized through front multi-stage filtration, rear activated carbon filtration and a rear heating sterilization or UV sterilizer, and the safety of drinking water is ensured. Through the combination of the cold tank and the medium unit and the combination of the hot water tank and the preheater, ice water, normal-temperature water and hot water can be supplied, and different people can supply drinking water at different temperatures.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification systems, and in particular to a multifunctional commercial drinking water supply system. Background Art

[0002] Residual chlorine in tap water, potential secondary pollution in pipes, hidden dangers of plastic microparticles in bottled water... Once these invisible risks cause safety hazards, they can easily trigger large-scale collective health incidents, damage the corporate image, and affect the company's subsequent industrial vitality.

[0003] Based on surveys of public venues such as train stations, hospitals, airports, and schools, commercial drinking water platforms typically use direct heating or filtration processes to treat tap water. Direct heating involves heating tap water to 100°C for high-temperature disinfection and sterilization. For filtration, equipment manufacturers use a four- or five-stage filtration process, which involves deep treatment of tap water through a five-stage filtration process consisting of PP + activated carbon + PP + RO + post-activated carbon.

[0004] In direct heating, prolonged heating operation can lead to scaling in the hot tank, resulting in low heat exchange efficiency, high power consumption, and energy waste. Furthermore, scale can easily break off within the tank, causing pipe blockage and disrupting proper water flow. Even when water is flowing, the quality of the water deteriorates. Direct heating typically offers only cold and hot water modes. Water equipment with four- or five-stage filtration processes typically only produces room-temperature water and lacks sterilization measures after multiple stages of filtration, posing a safety hazard.

[0005] Based on the problems in the prior art, the present invention provides a multifunctional commercial drinking water supply system. Summary of the Invention

[0006] The purpose of the present invention is to provide a multifunctional commercial drinking water supply system to solve the technical problem in the existing technology that direct heating equipment and multi-stage filtration water supply equipment have a relatively single water outlet temperature zone and cannot meet the demand for public drinking water in fast-paced life.

[0007] The technical solution of the present invention is: a multifunctional commercial drinking water supply system, including a pre-filtration device, including multiple filters, the multiple filters are connected in series through pipelines to form a filtration chain, the wastewater generated by the filtration chain is connected to the sewer, and the usable water generated by the filtration circuit is sent to a temperature-controlled drainage device through a pipeline; the drainage device includes a hot water tank, a cold tank, and a UV sterilizer arranged in parallel; The pre-filter device is connected to the hot water tank through a first branch pipe, and the output end of the hot water tank is a hot water outlet; The pre-filter device is connected to the cold tank through a second branch pipeline; the pre-filter device is connected to the UV sterilizer through a third branch pipeline, the output end of the cold tank is connected to the UV sterilizer, and the output end of the UV sterilizer is a cold water output port.

[0008] Preferably, a preheater is provided on the first branch pipeline, and the preheater is connected upstream of the hot water tank; and a medium unit of a compressor is connected to the heat exchange pipe in the cold tank.

[0009] Preferably, the medium unit includes a compressor and a dryer, the compressor is connected to the heat exchange tube and the preheater, the preheater is connected to the heat exchange tube through the dryer, the compressor, preheater and heat exchange tube form a heat exchange circulation loop, and the water preheated by the preheater enters the hot water tank for heating.

[0010] Preferably, the medium 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 loop between the medium unit and the cold tank to cool the water in the cold tank; 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 correspondingly connected to the water inlet and the water outlet of the heating pipe in the hot water tank, forming a first heat exchange loop between the preheater and the hot water tank, and the first output end of the preheater directly discharges water to form a warm water outlet.

[0011] Preferably, a third temperature sensor and a second water outlet solenoid valve are provided on the output pipeline corresponding to the first output end of the preheater.

[0012] Preferably, the pre-filter 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 water inlet solenoid valve are provided on the pipeline between the output end of the three-stage filter and the booster pump; a high-pressure protection switch and a TDS online tester are provided on the pipeline between the RO reverse osmosis structure and the constant pressure tank.

[0013] 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; A hot water discharge solenoid valve, an emptying solenoid valve, an overflow pipe and an exhaust port are installed on the hot water tank; and a third water inlet solenoid valve is installed on the first branch pipeline upstream of the preheater.

[0014] 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 respectively; A second water inlet solenoid valve is installed on the second branch pipeline, and a first water outlet solenoid valve is installed on the water outlet pipeline of the cold tank.

[0015] Preferably, a concentrated water proportional valve is installed on the water outlet pipeline of the filtration link.

[0016] Preferably, at least one water inlet is provided at each of the cold water outlet and the hot water outlet.

[0017] Compared with the prior art, the advantages of the present invention are: This invention improves water quality through a pre-filter and multi-stage filtration. The pre-filter, post-activated carbon filtration, and post-heat sterilization or UV sterilizer achieve multiple sterilizations, ensuring drinking water safety. Furthermore, by combining a cold tank with a media unit, and a hot water tank with a preheater, it can supply chilled, room-temperature, and hot water, meeting the drinking water needs of different populations at varying temperatures. Furthermore, energy exchange between the hot water tank and / or cold tank and the media unit via the media unit effectively utilizes energy and avoids waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic structural diagram of a multi-temperature zone commercial drinking water platform in the first embodiment of the present invention; Figure 2 This is a schematic structural diagram of a multi-temperature zone commercial drinking water platform in the second embodiment of the present invention; Figure 3 This is a schematic diagram of the water treatment process flow of the multi-temperature zone commercial drinking water platform in the second embodiment of the present invention; Figure 4 This is a schematic structural diagram of a multi-temperature zone commercial drinking water platform in the third embodiment of the present invention; Figure 5 This is a schematic diagram of the water treatment process flow of the multi-temperature zone commercial drinking water platform in the third embodiment of the present invention; Figure 6 This is a schematic diagram of multiple water intakes of a multi-temperature zone commercial drinking water platform in the third embodiment of the present invention; Including: 1. Pre-filter device; 2. Hot water tank; 3. Cold tank; 4. UV sterilizer; 5. Preheater; 6. Medium unit; 7. Heating pipe; 8. Heat exchange pipe; 9. Concentrated water proportioning valve; 10. First water 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; 21. First temperature sensor; 22. First guide rod level gauge; 23. Hot water drain solenoid valve; 24. Drain solenoid valve; 25. Exhaust port; 26. Third water inlet solenoid valve; 27. Overflow pipe; 28. Third temperature sensor; 29. ​​Second water outlet solenoid valve; 31. Second temperature sensor; 32. Second guide rod level gauge; 33. Second water inlet solenoid valve; 34. First water outlet solenoid valve; 61. Compressor; 62. Condenser; 63. Dryer; 100, first branch pipeline; 200, second branch pipeline; 300, third branch pipeline. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to specific embodiments: like Figure 1 As shown, a multifunctional commercial drinking water supply system includes a pre-filtration device 1 and a drainage device. The pre-filtration device 1 includes multiple filters connected in series via pipelines to form a filtration chain. The usable water produced by the pre-filtration device 1 is connected to the temperature-controlled drainage device via pipelines. The wastewater produced by the pre-filtration device 1 is connected to the sewer. A concentrated water proportional valve 9 is installed in the wastewater output pipeline to control the wastewater outflow.

[0020] In Example 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.

[0021] A low-pressure protection switch 18 and a first water inlet solenoid valve 10 are installed on the pipeline between the output of the tertiary 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. These monitor the water output of the equipment in real time, and if any water quality issues are detected, an alarm will be issued to ensure the safety of the water output.

[0022] Among them, the first-stage filter 11 has a built-in 5umPP spray-melt filter element, which can effectively intercept large-particle impurities such as rust, mud, and colloids in the water, with a filtration accuracy of more than 99.5%. The second-stage filter 12 has a built-in iodine value 1100 granular coconut shell activated carbon filter element, which can remove organic matter, residual chlorine, and disinfection by-products in tap water, and can also remove a small amount of heavy metal ions such as lead and mercury, reducing the back-end processing load; at the same time, it can serve as a pre-treatment level protection for the RO membrane to prevent organic matter from clogging the membrane pores and extending the membrane life. The third-stage filter 13 has a built-in 1umPP spray-melt filter element, which serves as the last line of defense for the filter. It can significantly extend the life of the rear RO membrane and post-activated carbon and avoid blockage caused by large particulate pollutants. The booster pump 14 increases the water flow pressure in the pipeline and provides the necessary water production pressure for RO membrane filtration. The RO reverse osmosis (RO) system 15 incorporates a built-in RO membrane filter with a filtration accuracy of 0.0001 μm. Leveraging the membrane's inherent pore size, it efficiently intercepts heavy metal ions and dissolved salts, thoroughly filtering out bacteria, viruses, and microbial spores. The membrane system achieves a desalination rate of 95% to 99%. The constant pressure tank 16, featuring an internal airbag diaphragm, absorbs water hammer generated during pump startup and shutdown, preventing pipe vibration and joint leaks, maintaining constant outlet pressure. This reduces frequent pump startups and shutdowns, extending the life of the dispenser. It also serves as a water storage system, ensuring basic water needs during power outages. The post-activated carbon filter 17, equipped with a coconut shell activated carbon filter with an iodine value of 1000, serves as the dispenser's final filter, removing odorous molecules such as sulfides and enhancing taste.

[0023] The drainage device includes a hot water tank 2, a cold tank 3, and a UV sterilizer 4 which are arranged in parallel.

[0024] The usable water of the pre-filter device 1 is discharged from the water 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.

[0025] Hot water tank 2 is equipped with a first temperature sensor 21 and a first guide rod level gauge 22 to detect the hot water temperature and volume, respectively. Also installed are a hot water drain solenoid valve 23, a drain solenoid valve 24, a third water inlet solenoid valve 26, an overflow pipe 27, and an exhaust port 25 to intelligently control water inflow and outflow at both points and balance the tank's internal pressure.

[0026] The usable water of the pre-filter device 1 is discharged from the water outlet of the post-activated carbon filter 17 and connected to the cold tank 3 through the second branch pipe 200 .

[0027] The pre-filter device 1 is connected to the UV sterilizer 4 through the third branch pipeline 300 , 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 a cold water outlet.

[0028] 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 water inlet solenoid valve 33 is installed on the second branch pipeline 200, and a first water outlet solenoid valve 34 is installed on the water outlet pipeline of the cold tank 3 to control the inlet and outlet of the cold tank 3.

[0029] The usable water of the pre-filter device 1 is discharged from the water outlet of the post-activated carbon filter 17 and connected to the UV sterilizer 4 through the third branch pipe 300. The cold water can be directly discharged from the UV sterilizer 4 for use, or it can enter the cold tank 3 for cooling and then be discharged through the UV sterilizer 4 for use.

[0030] The treated drinking water is heated to 90-95°C by the heater in hot water tank 2, providing a source of hot water for users. The treated water undergoes heat exchange in cold tank 3 through heat exchange tubes 8, creating a source of chilled water. The UV sterilizer 4 emits 254nm ultraviolet light, destroying the DNA / RNA structure of pathogens such as bacteria and viruses, rendering them incapable of reproduction, with a sterilization rate of up to 99.99%.

[0031] This embodiment can efficiently filter water through the three-stage filtration in the front and the activated carbon filtration in the back, thus avoiding the precipitation of scale in the subsequent equipment; and at the drainage device end, hot water is discharged after high-temperature heating and sterilization, and for the cold water outlet end, it is supplied after sterilization and disinfection by the UV sterilizer 4, thereby improving the safety of water use.

[0032] In detail, the heat exchange pipe 8 in the cold tank 3 is kept refrigerated by the refrigerant, or kept refrigerated by other means. For example, the heat exchange pipe 8 in the cold tank 3 is connected to the medium unit 6, which includes a compressor 61, a condenser 62 and a dryer 63 connected in sequence by pipelines. 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 medium unit 6 and the cold tank 3, cooling the water in the cold tank 3. This maintains a long-term low temperature and a continuous supply of cold water.

[0033] In Example 2 or other embodiments, a multifunctional commercial drinking water supply system includes the pre-filter device 1 and the drainage device in Example 1, and the drainage device includes a hot water tank 2, a cold tank 3, and a UV sterilizer 4 arranged in parallel. Figure 2 As shown, the medium unit 6 is connected to the cold tank 3 , and the medium unit 6 and the heat exchange pipes in the cold tank 3 form a second heat exchange loop to cool the water entering the cold tank 3 .

[0034] A preheater 5 is provided at the water inlet of the hot water tank 2, and a third water 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 water outlet solenoid valve 29 are provided on the output pipe corresponding to the first output end of the preheater 5.

[0035] 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 correspondingly connected to the water inlet and outlet of the heating pipe 7 in the hot water tank 2, forming a first heat exchange loop between the preheater 5 and the hot water tank 2, and the first output end of the preheater 5 directly discharges water to form a warm water outlet.

[0036] Refer to the attached Figure 3 The following is a water supply process flow chart corresponding to Example 2. It can be seen that the three-stage pre-filtration and post-activated carbon filtration effectively filter water, preventing scale buildup in subsequent equipment. At the drainage device, hot water is sterilized by high-temperature heating. At the cold water outlet, it is sterilized by UV sterilizer 4 before being supplied, improving water safety. The usable water passing through preheater 5 is initially heated and directly discharged to produce warm water. This usable water is then fed into hot water tank 2 for further heating to produce hot water. This enriches the water temperature range and makes water use more convenient.

[0037] In the third embodiment or other embodiments, a multifunctional commercial drinking water supply system includes the pre-filter device 1 and the drainage device in the first embodiment, and the medium unit 6 in the second embodiment. In this embodiment, the medium unit 6 includes a compressor 61 and a dryer 63. Figure 4 As shown, the compressor 61 is connected to the heat exchange pipe 8 and the preheater 5, and the preheater 5 is connected to the heat exchange pipe 8 through the dryer 63. Figure 5 or attached Figure 6 As shown in the process principle diagram provided, the compressor 61, the preheater 5 and the heat exchange tube 8 form a heat exchange circulation loop, and the water preheated by the preheater 5 enters the hot water tank 2 for heating.

[0038] Refer to the attached Figure 6 As shown, the hot water outlet corresponding to the hot water can be expanded to set multiple water intakes, and the cold water outlet corresponding to the UV sterilizer 4 can be expanded to set multiple water intakes to avoid queuing and congestion while meeting the water needs of multiple people.

[0039] Based on the multi-temperature commercial drinking water platform provided in the aforementioned embodiments, the present invention utilizes a pre-filter device and multi-stage filtration to improve water quality. The pre-filter, post-activated carbon filtration, and post-heat sterilization or UV sterilizer achieve multiple sterilizations to ensure drinking water safety. Furthermore, by combining a cold tank with a medium unit, and a hot water tank with a preheater, the platform can provide chilled, room-temperature, and hot water, meeting the drinking water needs of different populations at varying temperatures.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A multifunctional commercial drinking water supply system, comprising a pre-filtration device, comprising a plurality of filters, wherein the plurality of filters are connected in series via pipes to form a filtration chain, wherein wastewater generated by the filtration chain is connected to a sewer, and usable water generated by the filtration circuit is fed into a temperature-controlled drainage device via pipes; characterized in that: The drainage device includes a hot water tank, a cold tank, and a UV sterilizer arranged in parallel; The pre-filter device is connected to the hot water tank through a first branch pipe, and the output end of the hot water tank is a hot water outlet; The pre-filter device is connected to the cold tank through a second branch pipeline; the pre-filter device is connected to the UV sterilizer through a third branch pipeline, the output end of the cold tank is connected to the UV sterilizer, and the output end of the UV sterilizer is a cold water output port.

2. A multifunctional commercial drinking water supply system according to claim 1, characterized in that: A preheater is provided on the first branch pipeline and is connected upstream of the hot water tank; a medium unit of a compressor is connected to the heat exchange pipe in the cold tank.

3. A multifunctional commercial drinking water supply system according to claim 2, characterized in that: The medium unit includes a compressor and a dryer. The compressor is connected to the heat exchange tube and the preheater. The preheater is connected to the heat exchange tube through the dryer. The compressor, preheater and heat exchange tube form a heat exchange circulation loop. The water preheated by the preheater enters the hot water tank for heating.

4. A multifunctional commercial drinking water supply system according to claim 2, characterized in that: The medium 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 loop between the medium unit and the cold tank to cool the water in the cold tank; 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 correspondingly connected to the water inlet and the water outlet of the heating pipe in the hot water tank, forming a first heat exchange loop between the preheater and the hot water tank, and the first output end of the preheater directly discharges water to form a warm water outlet.

5. A multifunctional commercial drinking water supply system according to claim 4, characterized in that: A third temperature sensor and a second water outlet solenoid valve are provided on the output pipeline corresponding to the first output end of the preheater.

6. A multifunctional commercial drinking water supply system according to claim 2, characterized in that: The pre-filter 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 water inlet solenoid valve are provided on the pipeline between the output end of the three-stage filter and the booster pump; A high-pressure protection switch and a TDS online tester are installed on the pipeline between the RO reverse osmosis structure and the constant pressure tank.

7. The multifunctional commercial drinking water supply system 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 temperature and volume of the hot water respectively; A hot water discharge solenoid valve, an emptying solenoid valve, an overflow pipe and an exhaust port are installed on the hot water tank; and a third water inlet solenoid valve is installed on the first branch pipeline upstream of the preheater.

8. The multifunctional commercial drinking water supply system according to claim 1, 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 respectively; A second water inlet solenoid valve is installed on the second branch pipeline, and a first water outlet solenoid valve is installed on the water outlet pipeline of the cold tank.

9. The multifunctional commercial drinking water supply system according to claim 1, characterized in that: A concentrated water proportional valve is installed on the outlet pipe of the filtration link.

10. The multifunctional commercial drinking water supply system according to claim 1, characterized in that: At least one water inlet is provided at the cold water outlet and the hot water outlet respectively.

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