Sterile water preparation device
By adopting the dual effect combination of temperature-controlled sterilization and ultraviolet UVC sterilization in the sterile water preparation device, the problems of large investment in equipment and high consumables in the prior art are solved, and efficient and low-cost sterile water preparation is achieved.
Patent Information
- Application Number
- CN202421066147.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Among the existing sterile water preparation technology, thermal sterilization equipment has large investment and large area, resulting in high costs; while membrane filtration methods have high consumables, short continuous operation cycle, which affects quality stability.
The dual effect combination of temperature-controlled sterilization of heat exchangers and ultraviolet UVC sterilization is adopted. Through the buffer tank, the first and second heat exchangers, the ultraviolet device, the switching valve and other components, the double sterilization of water is achieved and the sterilization effect is improved.
It effectively improves the sterilization effect of sterile water, ensures quality requirements, and has a simple structure and low manufacturing cost.
Smart Images
Figure CN222454639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sterile water preparation device, belonging to the technical field of sterile production. Background Art
[0002] Sterile water has a wide range of uses. In real life, a large amount of sterile water is needed in the production of yogurt, beer, and medicine. Existing methods for preparing sterile water include heat sterilization and membrane filtration. Among them, the equipment investment used in the heat sterilization method is too large and the equipment itself occupies a large area, resulting in a higher cost for the preparation of sterile water. The membrane filtration method has high consumable costs in the process of preparing sterile water, and its short continuous operation cycle makes the quality of the prepared sterile water unstable, affecting the safety of the corresponding yogurt, beer, and pharmaceutical substances produced on each production line.
[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a sterile water preparation device, in which a dual-effect combination of temperature-controlled sterilization by a heat exchanger and ultraviolet UVC sterilization is adopted to effectively improve the sterilization effect and ensure the quality requirements of sterile water, and the overall structure of the device is simple and the manufacturing cost is low.
[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:
[0006] The utility model provides a sterile water preparation device, comprising a buffer tank, a first heat exchanger, an ultraviolet device, a second heat exchanger, a first switching valve and a second switching valve;
[0007] The first water outlet of the cache tank is connected to the water switch valve through the centrifugal pump, the first heat exchanger, the ultraviolet device and the first switching valve in sequence; the second water outlet of the cache tank is connected to the water switch valve through the second heat exchanger, the discharge valve and the second switching valve in sequence; a thermometer and a flow meter are provided between the centrifugal pump and the first heat exchanger in sequence;
[0008] Among them, the ultraviolet device includes a UVC sterilization device, a third switching valve, a fourth switching valve and a fifth switching valve; the two UVC sterilization devices are connected to each other, and one of the UVC sterilization devices is connected to the first heat exchanger through the third switching valve; the other UVC sterilization device is connected to the first switching valve through the fourth switching valve; a third water outlet is also provided between the first heat exchanger and the first switching valve; the two fifth switching valves are sequentially arranged on the third water outlet.
[0009] Furthermore, it also includes a cache water tank; the two UVC sterilization devices are connected by a connecting pipe; one end of the return pipe is connected to the connecting pipe, and the other end is connected to the cache tank through the cache water tank; a sixth switching valve is provided on the return pipe.
[0010] Furthermore, the first heat exchanger includes a heating plate heat exchanger and a cooling plate heat exchanger; the heat source water inlet of the heating plate heat exchanger is connected to the centrifugal pump, and the heat source water outlet is connected to the cold source water inlet of the cooling plate heat exchanger; the cold source water outlet of the cooling plate heat exchanger is connected to the ultraviolet device.
[0011] Furthermore, a heating temperature controller is provided between the heat source water inlet and the cold source water inlet.
[0012] Furthermore, a cooling temperature controller is provided between the cold source water outlet and the ultraviolet device.
[0013] Furthermore, the second heat exchanger is a reflux cooling heat exchanger.
[0014] Furthermore, a back pressure valve is provided between the second heat exchanger and the cache tank.
[0015] Furthermore, it also includes a recovery device; the recovery device is connected to the discharge valve.
[0016] Furthermore, the water switch valve includes a water inlet and a water outlet; a sterile sampling valve is arranged near the water inlet.
[0017] Furthermore, the cache tank is also provided with a water supply pipe; the water supply pipe is provided with a precision filter.
[0018] Furthermore, the cache tank is also provided with a water supply pipe; the water supply pipe is provided with a precision filter.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The utility model provides a sterile water preparation device, in which pre-filtered water enters a buffer tank and is pressurized by a centrifugal pump to deliver water. The water is sterilized once by the centrifugal pump through the heating or cooling in the first heat exchanger, and then enters the ultraviolet device and passes through two UVC sterilization devices in sequence for ultraviolet UVC irradiation sterilization. The sterile water obtained is supplied to the corresponding production line through a water switch valve. The sterilization effect of water can be improved by the dual sterilization technology of raising and lowering the water temperature for sterilization and ultraviolet UVC irradiation sterilization; the water vapor and other sterile gases in the buffer tank enter the second heat exchanger through the second water outlet for sterilization, and are discharged through the discharge valve for easy collection. The sterilized water vapor is collected and used elsewhere to avoid waste; in addition, the two fifth switching valves arranged on the third water outlet of the device, the second heat exchanger and the second switching valve arranged on the second water outlet of the cache tank, and the third switching valve and the fourth switching valve arranged on the UVC sterilization equipment can be used in conjunction during the cleaning process of the sterile water preparation device, so that each water outlet and the installed components can be cleaned. For example, the third switching valve and the fourth switching valve are closed, and the cleaning water entering the cache tank is passed through the first water outlet, the centrifugal pump, the first heat exchanger and other components, and the second water outlet and the second switching valve, and then enters the water switch valve and flows out after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structural connection of a sterile water preparation device provided by the utility model;
[0022] Figure 2 It is a schematic diagram of a process of a sterile water preparation device provided by the utility model;
[0023] In the figure: 1. cache tank; 2. first heat exchanger; 3. ultraviolet device; 4. second heat exchanger; 5. first switching valve; 6. second switching valve; 7. centrifugal pump; 8. first water outlet; 9. water switch valve; 10. discharge valve; 11. thermometer; 12. flow meter; 13. UVC sterilization equipment; 14. third switching valve; 15. fourth switching valve; 16. fifth switching valve; 17. third water outlet; 18. cache water tank; 19. connecting pipe; 20. reflux pipe; 21. heating plate heat exchanger; 22. cooling plate heat exchanger; 23. heating temperature controller; 24. cooling temperature controller; 25. back pressure valve; 26. recovery device; 27. sterile sampling valve; 28. water supply pipe; 29. precision filter; 30. cleaning pipe; 31. second water outlet. DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.
[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.
[0026] The present embodiment provides a sterile water preparation device, including a buffer tank 1, a first heat exchanger 2, an ultraviolet device 3, a second heat exchanger 4, a first switching valve 5, and a second switching valve 6. The first water outlet 8 and the second water outlet 31 provided on the buffer tank 1 are connected to the water switch valve after merging. Among them, the first water outlet 8 is connected to the centrifugal pump 7, the first heat exchanger 2, the ultraviolet device 3 and the first switching valve 5 in sequence, and then connected to the water switch valve 9. The second water outlet 31 is connected to the water switch valve 9 after passing through the second heat exchanger 4 and the second switching valve 6 in sequence. A thermometer 11 and a flowmeter 12 are provided between the centrifugal pump 7 and the first heat exchanger 2 in sequence, so that the management personnel can detect the temperature and flow of the water discharged from the buffer tank 1 through the centrifugal pump 7, so as to adjust the temperature and irradiation intensity corresponding to the first heat exchanger 2, the second heat exchanger 4 and the ultraviolet device 3 according to time requirements.
[0027] The ultraviolet device 3 includes a UVC sterilization device 13, a third switching valve 14, a fourth switching valve 15 and a fifth switching valve 16. The two UVC sterilization devices 13 are connected to each other (connected in series on the first water outlet 8). A third switching valve 14 is provided between one of the UVC sterilization devices 13 and the first heat exchanger 2. A fourth switching valve 15 is provided between the other UVC sterilization device 13 and the first switching valve 5. The first heat exchanger 2 and the first switching valve 5 are also connected through a third water outlet 17. Two fifth switching valves 16 are installed on the third water outlet 17.
[0028] During sterilization, the sterilization components on the first water outlet 8 are opened (the two fifth switching valves 16 are closed, the water switch valve 9, the third switching valve 14, and the fourth switching valve 15 are opened), the filtered water is input and stored in the buffer box, the centrifugal pump 7 is started to sterilize the water in the buffer box by temperature (heating or cooling) in the first heat exchanger 2, and then the water enters the water switch valve 9 after passing through the two UVC sterilization devices 13 to complete the ultraviolet UVC sterilization. When in use, the water switch valve 9 is opened to obtain sterile water. During use, the thermometer 11 and the flow meter 12 monitor the water temperature and flow rate discharged from the cache box in real time, which is convenient for the management personnel to control and adjust the temperature of the first heat exchanger 2 and the irradiation amplitude of the UVC sterilization device 13. The thermometer 11, the flow meter 12, the temperature of the first heat exchanger 2, and the UVC sterilization device 13 can be connected respectively through the controller, and the controller regulates the temperature of the first heat exchanger 2 and the UVC ultraviolet irradiation amplitude of the UVC sterilization device 13 according to the flow rate of the thermometer 11 monitored by the thermometer 11 and the flow meter 12. During this period, the water vapor and other substances in the buffer box enter the second heat exchanger 4 through the second water outlet 31 for sterilization, and are discharged through the discharge valve 10 to be supplied to other parts of the production line that do not require high water quality, which is conducive to recycling and effective water conservation.
[0029] The second water outlet 31 and the third water outlet 17 are used in the device as follows:
[0030] During cleaning, if the first water outlet 8 is cleaned alone, the discharge valve 10, the second switching valve 6 and the fifth switching valve 16 on the second water outlet are closed, and the cleaning water in the buffer tank 1 enters the first water outlet 8, the centrifugal pump 7, the first heat exchanger 2, the ultraviolet device 3 and the first switching valve 5 for cleaning, and is discharged from the water switch valve 9 after the cleaning is completed. When the first water outlet 8 and the second water outlet 31 are cleaned at the same time, the second switching valve 6 is opened, and the discharge valve 10 and the water switch valve 9 are closed. The cleaning water in the cache tank 1 flows from the first water outlet 8 through the second water outlet 31 into the cache tank 1 to form a closed loop, and after multiple cycles of cleaning, it is discharged from the water switch valve 9. Since the UVC sterilization device 13 itself can be irradiated and sterilized, the third switching valve 14 and the fourth switching valve 15 can be closed, and the two fifth switching valves 16 can be directly opened, so that the clean water flows to the water switch valve 9 through the third water outlet 17. Avoid clean water from flowing into the UVC sterilization device 13 for cleaning, save cleaning time, and improve cleaning efficiency.
[0031] Optionally, the sterile water preparation device provided in this embodiment further includes a buffer water tank 18 and a return pipe 20. The two UVC sterilization devices 13 are interconnected through a connecting pipe 19. One end of the return pipe 20 is connected to the connecting pipe 19, and the other end is connected to the buffer water tank 18. The sterile water sterilized by the first heat exchanger 2 and the two UVC sterilization devices 13 can open the sixth switching valve on the return pipe 20, so that the sterile water flows to the buffer water tank 18 for buffering, ensuring that the sterile water can be obtained in time after the water switch valve 9 is opened.
[0032] In some embodiments, the first heat exchanger 2 includes a heating plate heat exchanger 21 and a cooling plate heat exchanger 22. The connection method is: the heat source water inlet of the heating plate heat exchanger 21 is connected to the centrifugal pump 7. The heat source water outlet of the heating plate heat exchanger 21 is connected to the cold source water inlet of the cooling plate heat exchanger 22. The cold source water outlet of the cooling plate heat exchanger 22 is connected to the ultraviolet device 3. The two heat exchangers, the heating plate heat exchanger 21 and the cooling plate heat exchanger 22, are set to ensure that the water in the buffer tank 1 is first heated by the heating plate heat exchanger 21 to high temperature to kill bacteria that are difficult to adapt to high temperature, and then the water after high temperature sterilization enters the cooling plate heat exchanger 22 to reduce the temperature to kill bacteria that are difficult to adapt to low temperature, and then enters the ultraviolet device 3, so that the quality of the prepared sterile water is better.
[0033] Optionally, a heating temperature controller 23 is installed between the heat source water inlet and the cold source water inlet, and a cooling temperature controller 24 is installed between the cold source water outlet and the ultraviolet device 3. The management personnel can set the heating or cooling temperature of the heating plate heat exchanger 21 and the cooling plate heat exchanger 22 according to the heating temperature controller 23 and the cooling temperature controller 24, respectively, so as to achieve more accurate and efficient sterilization.
[0034] Optionally, the second water outlet 31 between the second heat exchanger 4 and the buffer tank 1 is equipped with a back pressure valve 25. The back pressure valve 25 adopts a sanitary back pressure valve 25. The design of adding the back pressure valve 25 can open or close the second water outlet 31, so that the discharge of water vapor, air and other substances can be accurately controlled from the outlet of the second water outlet.
[0035] Optionally, a recovery device 26 is also included. The discharge valve 10 is connected to the recovery device 26, and the discharged water can be recovered to the recovery device 26 to meet the needs of other processes of the production line, thereby saving water resources and avoiding excessive waste of water resources.
[0036] Optionally, the water switch valve 9 includes a water inlet and a water outlet. A sterile sampling valve 27 is arranged near the water inlet of the water switch valve 9. After sterilization by the first heat exchanger 2 and the ultraviolet device 3, the sterile sampling valve 27 can be opened to test the qualification of the sterile water and then put it in. The cache tank 1 is also equipped with a water supply pipe 28. The water supply pipe 28 is provided with a precision filter 29, and the water source first enters the smart filter for filtration to obtain filtered water, and then is transported to the cache tank 1. The cache tank 1 is also equipped with a cleaning pipe 30, and the detergent flows into the cache tank 1 from the cleaning pipe 30. The overall structure of the sterile water preparation device provided in this embodiment is easy to produce and manufacture, and occupies a relatively low area, which can reasonably control the production cost of sterile water.
[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A sterile water preparation device, characterized in that: It includes a cache tank, a first heat exchanger, an ultraviolet device, a second heat exchanger, a first switching valve and a second switching valve; The first water outlet of the cache tank is connected to the water switch valve through the centrifugal pump, the first heat exchanger, the ultraviolet device and the first switching valve in sequence; the second water outlet of the cache tank is connected to the water switch valve through the second heat exchanger, the discharge valve and the second switching valve in sequence; a thermometer and a flow meter are provided between the centrifugal pump and the first heat exchanger in sequence; Among them, the ultraviolet device includes a UVC sterilization device, a third switching valve, a fourth switching valve and a fifth switching valve; the two UVC sterilization devices are connected to each other, and one of the UVC sterilization devices is connected to the first heat exchanger through the third switching valve; the other UVC sterilization device is connected to the first switching valve through the fourth switching valve; a third water outlet is also provided between the first heat exchanger and the first switching valve; the two fifth switching valves are sequentially arranged on the third water outlet.
2. The sterile water preparation device according to claim 1, characterized in that: It also includes a cache water tank; the two UVC sterilization devices are connected by a connecting pipe; one end of the return pipe is connected to the connecting pipe, and the other end is connected to the cache tank through the cache water tank; a sixth switching valve is provided on the return pipe.
3. The sterile water preparation device according to claim 1, characterized in that: The first heat exchanger includes a heating plate heat exchanger and a cooling plate heat exchanger; the heat source water inlet of the heating plate heat exchanger is connected to the centrifugal pump, and the heat source water outlet is connected to the cold source water inlet of the cooling plate heat exchanger; the cold source water outlet of the cooling plate heat exchanger is connected to the ultraviolet device.
4. The sterile water preparation device according to claim 3, characterized in that: A heating temperature controller is arranged between the heat source water inlet and the cold source water inlet.
5. The sterile water preparation device according to claim 3, characterized in that: A cooling temperature controller is provided between the cold source water outlet and the ultraviolet device.
6. The sterile water preparation device according to claim 1, characterized in that: The second heat exchanger is a reflux cooling heat exchanger.
7. The sterile water preparation device according to claim 1 or 6, characterized in that: A back pressure valve is provided between the second heat exchanger and the cache tank.
8. The sterile water preparation device according to claim 1 or 6, characterized in that: It also includes a recovery device; the recovery device is connected to the discharge valve.
9. The sterile water preparation device according to claim 1, characterized in that: The water switch valve comprises a water inlet and a water outlet; a sterile sampling valve is arranged near the water inlet.
10. The sterile water preparation device according to claim 1, characterized in that: The cache tank is also provided with a water supply pipeline; the water supply pipeline is provided with a precision filter.