Device for preparing purified water

Abstract

The utility model discloses a device for preparing purified water. The device at least comprises an input pipeline; the first disinfection device is arranged at the output end of the input pipeline; the at least one filter is connected with the first disinfection device; the balancer is arranged on one side, far away from the first disinfection device, of the filter; the at least one reverse osmosis device is arranged on one side, far away from the filter, of the balancer; the electrodeionization device is arranged on one side, far away from the balancer, of the reverse osmosis device; the second disinfection device is arranged on one side, far away from the reverse osmosis device, of the electrodeionization device; the water backflow pipeline is connected with the output end of the filter and the input pipeline; the first purified water backflow pipeline is connected with the balancer and the reverse osmosis device; the second purified water return pipeline is connected with the electrodeionization device and the balancer; and the purified water output pipeline is arranged on one side, far away from the electrodeionization device, of the second disinfection device. According to the device provided by the utility model, the breeding of pollutants can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a device for preparing purified water. Background Art

[0002] Purified water is the largest and most widely used process raw material in the drug production process. It is used as a component of medicines, solvents and diluents. In the preparation process of purified water, the growth and contamination of microorganisms must be strictly prevented to protect human safety. However, the current equipment for preparing purified water has problems such as easy growth of microorganisms and cumbersome disinfection process. Utility Model Content

[0003] The purpose of the utility model is to provide a device for preparing purified water, which can avoid the growth of pollutants in the purified water preparation process, reduce the content of microorganisms in the purified water, optimize the disinfection process of each device in the device, and speed up the commissioning of the device.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model is implemented through the following technical solutions.

[0005] The utility model provides a device for preparing purified water, which at least comprises:

[0006] Input pipeline;

[0007] A first disinfection device, arranged at the output end of the input pipeline;

[0008] at least one filter connected to the first disinfection device;

[0009] A balancer is arranged on a side of the filter away from the first disinfection device;

[0010] at least one reverse osmosis device, disposed on a side of the balancer away from the filter;

[0011] An electrodeionization device is arranged on a side of the reverse osmosis device away from the balancer;

[0012] A second disinfection device is arranged on a side of the electrodeionization device away from the reverse osmosis device;

[0013] A water return pipeline, connecting the output end of the filter and the input pipeline;

[0014] a first purified water reflux pipeline, connecting the balancer and the reverse osmosis device;

[0015] a second purified water reflux pipeline, connecting the electrodeionization device and the balancer; and

[0016] The purified water output pipeline is arranged on a side of the second disinfection device away from the electrodeionization device.

[0017] In an embodiment of the present invention, when there are multiple filters, the multiple filters are arranged on a side of the first disinfection device away from the input pipeline, and the multiple filters are connected in series.

[0018] In an embodiment of the present invention, when there are multiple filters, there are multiple water return pipelines, and each of the multiple water return pipelines is connected to the input pipeline and the output end of each filter.

[0019] In an embodiment of the present invention, when there are multiple reverse osmosis devices, the multiple reverse osmosis devices are arranged on a side of the balancer away from the filter, and the multiple reverse osmosis devices are connected in series.

[0020] In an embodiment of the present invention, when there are multiple reverse osmosis devices, there are multiple first purified water return pipelines, and each of the first purified water return pipelines is connected to the balancer and each of the reverse osmosis devices.

[0021] In an embodiment of the present invention, the purified water output pipeline includes a water supply pipeline and a return pipeline, and the water supply pipeline and the return pipeline are connected in parallel.

[0022] In one embodiment of the utility model, the device further comprises a high-pressure pump, and the high-pressure pump is arranged between the balancer and the reverse osmosis device, and / or between the reverse osmosis devices.

[0023] In one embodiment of the utility model, the device also includes multiple detectors, which are respectively arranged on the first purified water return pipeline, between the reverse osmosis devices, between the reverse osmosis device and the electrodeionization device, between the electrodeionization device and the second disinfection device, and on the return pipeline.

[0024] In an embodiment of the present invention, the device further comprises a connecting pipeline, wherein the connecting pipeline connects the balancer and the input pipeline.

[0025] In one embodiment of the utility model, the device further comprises a plurality of control valves, which are respectively arranged on the water return pipeline, the first purified water return pipeline, the connecting pipeline and the second purified water return pipeline.

[0026] In summary, the utility model provides a device for preparing purified water, which can circulate water throughout the device, avoid dead water in the device, thereby avoiding the growth of microorganisms in the device and reducing the microbial content of purified water. Moreover, the device for preparing purified water provided by the utility model can optimize the disinfection process of the device, thereby speeding up the commissioning of the device.

[0027] Of course, any method of implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 The present invention is a schematic structural diagram of a device for preparing purified water in one embodiment of the present invention.

[0030] Marking Description:

[0031] 10. Input pipeline; 11. Raw water pump; 12. First disinfection device; 13. Mechanical filter; 14. Activated carbon filter; 15. Softening filter; 16. Precision filter; 17. Balancer; 18. First-stage high-pressure pump; 19. First-stage reverse osmosis device; 20. Second-stage high-pressure pump; 21. Second-stage reverse osmosis device; 22. Electrodeionization device; 23. Delivery pump; 24. Second disinfection device; 25. First control valve; 26. Second control valve; 27. Third control valve; 28. Fourth control valve; 29. ​​Fifth control valve; 30. Sixth control valve; 31. Seventh control valve Valve; 32, the eighth control valve; 33, the first detector; 34, the second detector; 35, the third detector; 36, the fourth detector; 37, the fifth detector; 38, the water return pipeline; 381, the first water return pipeline; 382, ​​the second water return pipeline; 383, the third water return pipeline; 39, the first purified water return pipeline; 391, the first purified water return pipeline branch one; 392, the first purified water return pipeline branch two; 40, the second purified water return pipeline; 41, the purified water output pipeline; 411, the reflux pipeline; 412, the water supply pipeline; 42, the connecting pipeline. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in the present invention can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0034] In the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first" and "second" appear, they are only used for description and distinction purposes, and cannot be understood as indicating or implying relative importance.

[0035] See also Figure 1 As shown, the utility model provides a device for preparing purified water, for example, including an input pipeline 10, a first disinfection device 12, a filter, a balancer 17, a reverse osmosis device, an electrodeionization device 22, a water return pipeline 38, a first purified water return pipeline 39, and a second purified water return pipeline 40. Among them, the water return pipeline 38 connects the filter and the input pipeline 10, the first purified water return pipeline 39 connects the balancer 17 and the reverse osmosis device, and the second purified water return pipeline 40 connects the electrodeionization device 22 and the balancer 17. The device for preparing purified water provided by the utility model can make water circulate continuously in the entire preparation device by setting the first purified water return pipeline 39 and the second purified water return pipeline 40, thereby avoiding the occurrence of dead water, thereby avoiding the growth of microorganisms in the device and reducing the microbial content of purified water.

[0036] See also Figure 1As shown, in one embodiment of the present invention, the input pipeline 10 provides raw materials for the entire device for preparing purified water. The raw materials enter the device for preparing purified water through the input pipeline 10, are disinfected and impurity-removed, and then output purified water that meets the requirements for pharmaceutical use. The raw materials input by the input pipeline 10 are, for example, tap water, or other sewage to be treated. In the present invention, the raw materials are described as tap water.

[0037] See also Figure 1 As shown, in one embodiment of the utility model, the first disinfection device 12 is arranged at the output end of the input pipeline 10. The first disinfection device 12 is, for example, a pasteurization device, an ultraviolet disinfection device, an ozone disinfection device or a superheated water disinfection device. The tap water in the input pipeline 10 enters the first disinfection device 12, and the first disinfection device 12 performs primary disinfection and sterilization on the tap water to reduce the content of microorganisms in the tap water.

[0038] See also Figure 1 As shown, in one embodiment of the utility model, the raw water pump 11 is arranged between the input pipeline 10 and the first disinfection device 12 to pressurize the tap water output from the input pipeline 10 so that the tap water can smoothly enter the first disinfection device 12. The raw water pump 11 is, for example, a centrifugal pump, a piston pump, a screw pump or a reciprocating pump.

[0039] See also Figure 1 As shown, in one embodiment of the utility model, the filter is connected to the first disinfection device 12 to remove suspended impurities in the tap water. There is at least one filter. When there are multiple filters, the multiple filters are sequentially arranged on the side of the first disinfection device 12 away from the input pipeline 10, and the multiple filters are connected in series. In this embodiment, there are four filters, for example, to improve the efficiency of removing suspended impurities. The four filters are, for example, a mechanical filter 13, an activated carbon filter 14, a softening filter 15 and a precision filter 16. The mechanical filter 13 is, for example, arranged on the side of the first disinfection device 12 away from the raw water pump 11. The tap water disinfected by the first disinfection device 12 first enters the mechanical filter 13, and the mechanical filter 13 intercepts large particles of suspended matter in the tap water.

[0040] See also Figure 1 As shown, in one embodiment of the utility model, the activated carbon filter 14 is arranged on the side of the mechanical filter 13 away from the first disinfection device 12. Since the activated carbon has a microporous structure, the tap water treated by the mechanical filter 13 enters the activated carbon filter 14, and the impurities such as colloids in the tap water are adsorbed into the micropores of the activated carbon, thereby achieving a filtering effect.

[0041] See also Figure 1As shown, in one embodiment of the utility model, the softening filter 15 is arranged on the side of the activated carbon filter 14 away from the mechanical filter 13. The tap water treated by the activated carbon filter 14 enters the softening filter 15, and the ions on the resin in the softening filter 15 exchange ions with the calcium, magnesium and other ions in the tap water, thereby reducing the content of calcium, magnesium and other ions in the tap water, reducing the hardness of the tap water, and avoiding scaling of calcium and magnesium ions in subsequent devices, thereby ensuring the smooth operation of the subsequent devices.

[0042] See also Figure 1 As shown, in one embodiment of the utility model, the precision filter 16 is arranged on the side of the softening filter 15 away from the activated carbon filter 14. The tap water treated by the softening filter 15 enters the precision filter 16, and the precision filter 16 further intercepts small particles of impurities in the tap water to prevent the impurities from affecting the operation of subsequent devices.

[0043] See also Figure 1 As shown, in one embodiment of the utility model, the balancer 17 is arranged on the side of the filter away from the first disinfection device 12. In this embodiment, a reverse osmosis device is arranged on the side of the balancer 17 away from the filter. By arranging the balancer 17, the pressure of the tap water entering the reverse osmosis device can be stabilized, and the stable operation of the reverse osmosis device can be maintained. Moreover, the balancer 17 is also used to store the tap water output by the filter.

[0044] See also Figure 1 As shown, in one embodiment of the utility model, the reverse osmosis device is arranged on the side of the balancer 17 away from the filter to remove solutes such as ions, microorganisms and colloids in the tap water to obtain purified water with low conductivity. Among them, there is at least one reverse osmosis device. When there are multiple reverse osmosis devices, the multiple reverse osmosis devices are sequentially arranged on the side of the balancer 17 away from the filter, and the multiple reverse osmosis devices are connected in series. In this embodiment, there are two reverse osmosis devices, for example, to improve the removal efficiency. The two reverse osmosis devices are, for example, a primary reverse osmosis device 19 and a secondary reverse osmosis device 21. Among them, the primary reverse osmosis device 19 is arranged on the side of the balancer 17 away from the filter to remove impurities such as ions, microorganisms and colloids in the tap water. The secondary reverse osmosis device 21 is arranged on the side of the primary reverse osmosis device 19 away from the balancer 17 to remove impurities such as ions, microorganisms and colloids in the tap water again to further reduce the impurity content in the water.

[0045] See also Figure 1As shown, in one embodiment of the utility model, the device for preparing purified water also includes a high-pressure pump, which is arranged between the balancer 17 and the reverse osmosis device, and / or between the reverse osmosis devices. In this embodiment, the high-pressure pump includes, for example, a primary high-pressure pump 18 and a secondary high-pressure pump 20. Among them, the primary high-pressure pump 18 is, for example, arranged between the balancer 17 and the primary reverse osmosis device 19 to increase the pressure of the tap water at the outlet of the balancer 17 so that the tap water can flow smoothly into the primary reverse osmosis device 19. Among them, the primary high-pressure pump 18 is, for example, a centrifugal pump, a piston pump, a screw pump or a reciprocating pump.

[0046] See also Figure 1 As shown, in one embodiment of the utility model, the secondary high-pressure pump 20 is, for example, disposed between the primary reverse osmosis device 19 and the secondary reverse osmosis device 21 to increase the pressure of the tap water at the outlet of the primary reverse osmosis device 19 so that the tap water can smoothly flow into the secondary reverse osmosis device 21. The secondary high-pressure pump 20 is, for example, a centrifugal pump, a piston pump, a screw pump or a reciprocating pump.

[0047] See also Figure 1 As shown, in one embodiment of the utility model, the electrodeionization device 22 is arranged on the side of the reverse osmosis device away from the balancer 17. In this embodiment, the electrodeionization device 22 is arranged, for example, on the side of the secondary reverse osmosis device 21 away from the secondary high-pressure pump 20. By arranging the electrodeionization device 22, under the action of the DC electric field, the ions in the water move in a directional manner and are removed, so as to achieve the purpose of purifying water.

[0048] See also Figure 1 As shown, in one embodiment of the utility model, the second disinfection device 24 is arranged on the side of the electrodeionization device 22 away from the reverse osmosis device, and disinfects and sterilizes the water again to meet the requirements of the water use point. The second disinfection device 24 is, for example, a pasteurization device, an ultraviolet disinfection device, an ozone disinfection device, or a superheated water disinfection device.

[0049] See also Figure 1 As shown, in one embodiment of the utility model, a delivery pump 23 is disposed between the electrodeionization device 22 and the second disinfection device 24 to increase the pressure of the purified water at the outlet of the electrodeionization device 22 so that the purified water can smoothly flow into the second disinfection device 24 for disinfection. The delivery pump 23 is, for example, a circulating variable frequency delivery pump, or a centrifugal pump, a piston pump, a screw pump, or a reciprocating pump.

[0050] See also Figure 1As shown, in one embodiment of the utility model, the purified water output pipeline 41 is arranged on the side of the second disinfection device 24 away from the electrodeionization device 22. Wherein, the purified water output pipeline 41, for example, includes a return pipeline 411 and a water supply pipeline 412, and the return pipeline 411 and the water supply pipeline 412 are connected in parallel. The purified water disinfected by the second disinfection device 24 enters the purified water output pipeline 41. If the detection data of the purified water meets the requirements of the water point, the purified water flows to the water supply pipeline 412 and is sent to the water point. If the detection data of the purified water does not meet the requirements of the water point, the purified water flows to the return pipeline 411, and is processed again by the balancer 17, the reverse osmosis device, the electrodeionization device 22 and the second disinfection device 24 to further remove impurities and microorganisms in the purified water until the requirements of the water point are met.

[0051] See also Figure 1 As shown, in one embodiment of the utility model, the water return pipeline 38 connects the output end of the filter and the input pipeline 10. Wherein, when there are multiple filters, there are multiple water return pipelines 38, and the multiple water return pipelines 38 are respectively connected to the input pipeline 10 and the output end of each filter. In this embodiment, the water return pipeline 38, for example, includes a first water return pipeline 381, a second water return pipeline 382, ​​and a third water return pipeline 383. Wherein, the first water return pipeline 381, for example, connects the output end of the mechanical filter 13 and the input pipeline 10. By setting the first water return pipeline 381, tap water can circulate in the input pipeline 10, the raw water pump 11, the first disinfection device 12, the mechanical filter 13 and the first water return pipeline 381, so as to achieve the purpose of disinfecting the mechanical filter 13.

[0052] See also Figure 1 As shown, in one embodiment of the utility model, the second water return pipeline 382 is connected to the output end of the activated carbon filter 14 and the input pipeline 10. By setting the second water return pipeline 382, ​​tap water can circulate in the input pipeline 10, the raw water pump 11, the first disinfection device 12, the mechanical filter 13, the activated carbon filter 14 and the second water return pipeline 382, ​​so as to achieve the purpose of disinfecting the mechanical filter 13 and the activated carbon filter 14.

[0053] See also Figure 1 As shown, in one embodiment of the utility model, the third water return pipeline 383 is connected to the output end of the softening filter 15 and the input pipeline 10. By setting the third water return pipeline 383, tap water can circulate in the input pipeline 10, the raw water pump 11, the first disinfection device 12, the mechanical filter 13, the activated carbon filter 14, the softening filter 15 and the third water return pipeline 383, so as to achieve the purpose of disinfecting the mechanical filter 13, the activated carbon filter 14 and the softening filter 15.

[0054] See also Figure 1 As shown, in one embodiment of the utility model, the connecting pipeline 42 connects the balancer 17 and the input pipeline 10. By setting the connecting pipeline 42, tap water can circulate in the input pipeline 10, the raw water pump 11, the first disinfection device 12, the mechanical filter 13, the activated carbon filter 14, the softening filter 15, the precision filter 16, the filter 17 and the connecting pipeline 42, so as to achieve the purpose of disinfecting the mechanical filter 13, the activated carbon filter 14, the softening filter 15, the precision filter 16 and the filter 17. In the present application, by setting the water return pipeline 38 and the connecting pipeline 42, the filter and the balancer 17 can be disinfected one by one, and the filter and the balancer 17 can also be disinfected as a whole, so as to shorten the disinfection process and speed up the commissioning progress of the device.

[0055] See also Figure 1 As shown, in one embodiment of the utility model, the first purified water return pipeline 39 connects the balancer 17 and the reverse osmosis device. Wherein, when there are multiple reverse osmosis devices, there are multiple first purified water return pipelines 39, and the first purified water return pipelines 39 are respectively connected to the balancer 17 and each reverse osmosis device. In this embodiment, the first purified water return pipeline 39, for example, includes a first purified water return pipeline branch 1 391 and a first purified water return pipeline branch 2 392. Wherein, the first purified water return pipeline branch 1 391 connects the primary reverse osmosis device 19 and the balancer 17, so that the concentrated water containing impurities intercepted by the primary reverse osmosis device 19 flows back to the balancer 17, and then returns to the primary reverse osmosis device 19 through the balancer 17, and the water in the concentrated water is recovered. The first purified water return line branch 2 392 connects the secondary reverse osmosis device 21 and the balancer 17, so that the concentrated water containing impurities intercepted by the secondary reverse osmosis device 21 flows back to the balancer 17, and then returns to the primary reverse osmosis device 19 and the secondary reverse osmosis device 21 through the balancer 17, so as to recover the water in the concentrated water. In addition, through the first purified water return line branch 1 391 and the first purified water return line branch 2 392, the water in the primary reverse osmosis device 19 and the secondary reverse osmosis device 21 is continuously circulated to avoid the accumulation of dead water in the device and the breeding of microorganisms.

[0056] See also Figure 1 As shown, in one embodiment of the utility model, the second purified water return pipeline 40 connects the electrodeionization device 22 and the balancer 17. In this embodiment, the concentrated water containing impurities intercepted by the electrodeionization device 22 is returned to the balancer 17 through the second purified water return pipeline 40, and then returns to the primary reverse osmosis device 19, the secondary reverse osmosis device 21 and the electrodeionization device 22 through the balancer 17, and the water in the concentrated water is recovered. Moreover, through the second purified water return pipeline 40, the water in the electrodeionization device 22 is continuously circulated to avoid the accumulation of dead water in the device and the breeding of microorganisms.

[0057] See also Figure 1 As shown, in one embodiment of the utility model, the device for preparing purified water further includes a plurality of detectors, which are at least arranged on the first purified water return pipeline 39, between the reverse osmosis devices, between the reverse osmosis device and the electrodeionization device 22, between the electrodeionization device 22 and the second disinfection device 24, and on the return pipeline 411. In this embodiment, the detectors include, for example, a first detector 33, a second detector 34, a third detector 35, a fourth detector 36, and a fifth detector 37. Among them, the first detector 33 is arranged on the first purified water return pipeline 39, the second detector 34 is arranged between the reverse osmosis devices, the third detector 35 is arranged between the reverse osmosis device and the electrodeionization device 22, the fourth detector 36 is arranged between the electrodeionization device 22 and the second disinfection device 24, and the fifth detector 37 is arranged on the return pipeline 411 to detect the water in the corresponding pipelines. Through the first detector 33, the second detector 34, the third detector 35 and the fourth detector 36, it is possible to detect whether the operating status of the primary reverse osmosis device 19, the secondary reverse osmosis device 21 and the electrodeionization device 22 are normal. Through the fifth detector 37, it is possible to monitor whether the purified water output by the preparation device meets the requirements of the water point. If it meets the requirements, the purified water is sent to the water point through the water supply pipeline 412. If it does not meet the requirements, the purified water is sent to the balancer 17 through the return pipeline 411 to continue disinfection and sterilization. In this embodiment, the first detector 33, the second detector 34, the third detector 35, the fourth detector 36 and the fifth detector 37, for example, each detects data such as pH value, conductivity, microbial content or oxidation-reduction potential.

[0058] See also Figure 1As shown, in one embodiment of the utility model, the device for preparing purified water further includes a plurality of control valves, which are at least arranged on the water return line 38, the first purified water return line 39, the connecting line 42 and the second purified water return line 40. In this embodiment, the control valves include, for example, the first control valve 25, the second control valve 26, the third control valve 27, the fourth control valve 28, the fifth control valve 29, the sixth control valve 30, the seventh control valve 31 and the eighth control valve 32. Among them, the first control valve 25 is arranged on the first water return line 381 to control the circulation of tap water on the first water return line 381. The second control valve 26 is arranged on the second water return line 382 to control the circulation of tap water on the second water return line 382. The third control valve 27 is arranged on the third water return line 383 to control the circulation of tap water on the third water return line 383. The fourth control valve 28 is arranged between the softening filter 15 and the precision filter 16 to control the circulation of tap water between the softening filter 15 and the precision filter 16. The fifth control valve 29 is arranged on the first purified water return line branch 1 391 to control the circulation of concentrated water on the first purified water return line branch 1 391. The sixth control valve 30 is arranged on the connecting line 42 to control the circulation of water on the connecting line 42. The seventh control valve 31 is arranged on the first purified water return line branch 2 392 to control the circulation of concentrated water on the first purified water return line branch 2 392. The eighth control valve 32 is arranged on the second purified water return line 40 to control the circulation of purified water on the second purified water return line 40.

[0059] In summary, the utility model provides a device for preparing purified water, which can circulate water in the entire device through the first purified water return pipeline and the second purified water return pipeline, avoid the accumulation of dead water, thereby avoiding the breeding of microorganisms and reducing the content of microorganisms in purified water. Moreover, the device provided by the utility model can disinfect multiple filters step by step through the water return pipeline, and can also disinfect the filters as a whole, so as to shorten the disinfection process and speed up the commissioning of the device.

[0060] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that the specific features, structures, or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model, and not necessarily in all embodiments. Thus, the various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics of any specific embodiment of the utility model may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the utility model embodiments described and shown herein may be based on the teachings herein and will be considered part of the spirit and scope of the utility model.

[0061] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the utility model, such as the technical solution formed by replacing the above-mentioned features with the technical features with similar functions disclosed in this application (but not limited to). In addition to the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the remaining technical features will not be repeated here.

Claims

1. A device for preparing purified water, characterized in that: At least: Input pipeline; A first disinfection device, arranged at the output end of the input pipeline; at least one filter connected to the first disinfection device; A balancer is arranged on a side of the filter away from the first disinfection device; at least one reverse osmosis device, disposed on a side of the balancer away from the filter; An electrodeionization device is arranged on a side of the reverse osmosis device away from the balancer; A second disinfection device is arranged on a side of the electrodeionization device away from the reverse osmosis device; A water return pipeline, connecting the output end of the filter and the input pipeline; a first purified water reflux pipeline, connecting the balancer and the reverse osmosis device; a second purified water reflux pipeline, connecting the electrodeionization device and the balancer; as well as The purified water output pipeline is arranged on a side of the second disinfection device away from the electrodeionization device.

2. The device according to claim 1, characterized in that When there are multiple filters, the multiple filters are arranged on a side of the first disinfection device away from the input pipeline, and the multiple filters are connected in series.

3. The device according to claim 2, characterized in that When there are multiple filters, there are multiple water return pipelines, and each of the multiple water return pipelines is connected to the input pipeline and the output end of each filter.

4. The device according to claim 1, characterized in that When there are a plurality of reverse osmosis devices, the plurality of reverse osmosis devices are disposed on a side of the balancer away from the filter, and the plurality of reverse osmosis devices are connected in series.

5. The device according to claim 4, characterized in that When there are multiple reverse osmosis devices, there are multiple first purified water return pipelines, and each of the first purified water return pipelines is connected to the balancer and each of the reverse osmosis devices.

6. The device according to claim 1, characterized in that The purified water output pipeline includes a water supply pipeline and a reflux pipeline, and the water supply pipeline and the reflux pipeline are connected in parallel.

7. The device according to claim 1, characterized in that The device further comprises a high-pressure pump, which is arranged between the balancer and the reverse osmosis device and / or between the reverse osmosis devices.

8. The device according to claim 1, characterized in that The device also includes a plurality of detectors, which are arranged at least on the first purified water return pipeline, between the reverse osmosis devices, between the reverse osmosis device and the electrodeionization device, between the electrodeionization device and the second disinfection device, and on the return pipeline.

9. The device according to claim 1, characterized in that The device further comprises a communication pipeline, wherein the communication pipeline connects the balancer and the input pipeline.

10. The device according to claim 9, characterized in that The device further comprises a plurality of control valves, which are arranged at least on the water return pipeline, the first purified water return pipeline, the connecting pipeline and the second purified water return pipeline.

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