Ultraviolet sterilization device and reverse osmosis system

Abstract

The utility model provides an ultraviolet sterilization device and a reverse osmosis system, and relates to the technical field of sterilization equipment, the ultraviolet sterilization device comprises a shell and an ultraviolet generation unit, the shell comprises an overflowing cavity, a water inlet and a water outlet; the ultraviolet generating unit is arranged in the overflowing cavity, the ultraviolet generating unit comprises a lamp panel and a plurality of ultraviolet lamp beads, and the wavelength of at least one ultraviolet lamp bead is different from that of other ultraviolet lamp beads. According to the utility model, the ultraviolet lamp beads with different wavelengths are configured to generate ultraviolet rays with one wavelength or ultraviolet rays with different wavelengths, and the ultraviolet radiation of the ultraviolet rays with different wavelengths can effectively destroy chemical bonds of organic matters and cellular structures of microorganisms; therefore, microorganisms, bacteria, viruses or organic matters and the like in the sewage can be efficiently removed, the problem of membrane pollution and blockage caused by microorganism breeding in the subsequent reverse osmosis process is effectively solved, the service life of the reverse osmosis device is prolonged, and the cleaning difficulty of the subsequent reverse osmosis device is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilization equipment, in particular to an ultraviolet sterilization device and a reverse osmosis system. Background Art

[0002] Sewage treatment and resource utilization are important ways to alleviate the water resource crisis and control water pollution. Ultraviolet rays can be generated by ultraviolet generators, and ultraviolet rays can be used to disinfect microorganisms in water bodies, thereby eliminating microbial contamination in water bodies, making ultraviolet generators widely used in sewage treatment and resource utilization. Ultraviolet generators in the prior art usually use ultraviolet mercury lamps with a single wavelength, which have certain usage limitations and cannot meet the needs of disinfecting different microorganisms. In addition, ultraviolet mercury lamps need to be preheated for a certain period of time before they can reach the optimal working state, thereby increasing energy consumption. In addition, the life of ultraviolet mercury lamps is relatively short, usually thousands of hours, which increases the maintenance cost of subsequent replacement of lamp groups. Furthermore, ultraviolet mercury lamps contain mercury elements, which are easy to pollute the environment and cause health problems. Therefore, the inventors, relying on their many years of experience and practice in related industries, propose a UV sterilization device and a reverse osmosis system to improve at least one defect in the prior art. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present utility model is to provide an ultraviolet sterilization device and a reverse osmosis system.

[0004] The above-mentioned purpose of the utility model can be achieved by adopting the following technical solutions. The utility model provides an ultraviolet sterilization device, including:

[0005] A shell, the shell comprising a flow cavity, and a water inlet and a water outlet communicating with the flow cavity;

[0006] An ultraviolet generating unit is arranged in the flow cavity, and the ultraviolet generating unit includes a lamp board and a plurality of ultraviolet lamp beads arranged on the lamp board, and the wavelength of at least one of the ultraviolet lamp beads is different from the wavelengths of the other ultraviolet lamp beads.

[0007] In a preferred embodiment of the present invention, the ultraviolet sterilization device further comprises an ultraviolet control module, the ultraviolet control module is electrically connected to each of the ultraviolet lamp beads, and the ultraviolet control module can be used to control each of the ultraviolet lamp beads to turn on or off.

[0008] In a preferred embodiment of the present invention, the ultraviolet lamp beads are ultraviolet LED lamp beads.

[0009] In a preferred embodiment of the present utility model, the lamp board includes a core board, the core board is fixedly arranged in the flow cavity, and the ultraviolet lamp beads are arranged at intervals on the core board.

[0010] In a preferred embodiment of the present utility model, the ultraviolet generating units are provided in a plurality of groups, and the spacer rings of the ultraviolet generating units are arranged in the flow chamber.

[0011] In a preferred embodiment of the present invention, the shell includes a cylinder, and a first end cover and a second end cover respectively arranged at both ends of the cylinder, and the water inlet and the water outlet are respectively arranged on the first end cover and the second end cover.

[0012] The utility model also provides a reverse osmosis system, including the aforementioned ultraviolet sterilization device and a reverse osmosis device, wherein the reverse osmosis device includes a pure water outlet, a concentrated water outlet and a sewage inlet, and the water outlet of the ultraviolet sterilization device is connected to the sewage inlet.

[0013] In a preferred embodiment of the utility model, it also includes a flow pipe and a water conveying device arranged on the flow pipe, and the flow pipe connects the water outlet of the ultraviolet sterilization device with the sewage inlet.

[0014] In a preferred embodiment of the present utility model, a liquid inlet control valve is provided on the flow pipeline located upstream and / or downstream of the water conveying device.

[0015] In a preferred embodiment of the present invention, a pulsation damper is further included, wherein the pulsation damper is connected to the flow pipe and is placed between the water conveying device and the reverse osmosis device.

[0016] In a preferred embodiment of the utility model, a sampling branch pipe is provided on the flow pipeline, the sampling branch pipe is arranged between the water conveying device and the reverse osmosis device, and a sampling control valve is provided on the sampling branch pipe.

[0017] In a preferred embodiment of the present invention, it also includes an external discharge pipeline and a water outlet pipeline, the external discharge pipeline is connected to the concentrated water outlet, and an external discharge check valve is provided on the external discharge pipeline; the water outlet pipeline is connected to the pure water outlet, and a flow meter is provided on the water outlet pipeline.

[0018] The technical solution of the utility model has the following significant beneficial effects:

[0019] When the ultraviolet sterilization device of the utility model is used, the sewage to be treated is input into the flow chamber through the water inlet on the shell, the ultraviolet generating unit arranged in the flow chamber is started, and the ultraviolet lamp beads are used to generate ultraviolet rays of one wavelength or multiple different wavelengths. The ultraviolet radiation of ultraviolet rays of different wavelengths can effectively destroy the chemical bonds of organic matter and the cell structure of microorganisms, so that microorganisms, bacteria, viruses or organic matter in the sewage can be efficiently removed. By controlling the wavelength of the ultraviolet lamp beads, the killing effect of bacteria, viruses or other microorganisms in the water can be improved. The water body after ultraviolet sterilization can be output through the water outlet on the shell, thereby effectively alleviating the membrane fouling problem caused by the growth of microorganisms in the subsequent reverse osmosis process, improving the service life of the reverse osmosis device, and reducing the difficulty of cleaning the subsequent reverse osmosis device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0022] Figure 1 It is a side cross-sectional view of an embodiment of the ultraviolet sterilization device of the utility model;

[0023] Figure 2 It is a structural schematic diagram of an embodiment of a reverse osmosis system shown in the utility model.

[0024] Reference numerals in the above drawings:

[0025] 100, housing; 110, flow chamber; 120, water inlet; 130, water outlet; 140, cylinder; 150, first end cover; 160, second end cover;

[0026] 200, ultraviolet generating unit; 210, lamp board; 220, ultraviolet lamp beads; 230, ultraviolet control module;

[0027] 300. Reverse osmosis device;

[0028] 400, flow pipe; 410, liquid inlet control valve;

[0029] 500. Water transport device;

[0030] 600, pulsation damper;

[0031] 700, sampling branch pipe; 710, sampling control valve;

[0032] 800, external discharge pipeline; 810, external discharge check valve;

[0033] 900. Water outlet pipe; 910. Flow meter. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Implementation Method 1

[0036] Please refer to Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an ultraviolet sterilization device, which includes a shell 100 and an ultraviolet generating unit 200, the shell 100 includes a flow cavity 110, and a water inlet 120 and a water outlet 130 connected to the flow cavity 110; the ultraviolet generating unit 200 is arranged in the flow cavity 110, and the ultraviolet generating unit 200 includes a lamp board 210 and a plurality of ultraviolet lamp beads 220 arranged on the lamp board 210, and the wavelength of at least one ultraviolet lamp bead 220 is different from the wavelength of other ultraviolet lamp beads 220.

[0037] On the whole, when the ultraviolet sterilization device is used, the sewage to be treated is input into the flow chamber 110 through the water inlet 120 on the shell 100, and the ultraviolet generating unit 200 arranged in the flow chamber 110 is started. The ultraviolet lamp beads 220 are used to generate ultraviolet rays of one wavelength or multiple different wavelengths. The ultraviolet radiation of ultraviolet rays of different wavelengths can effectively destroy the chemical bonds of organic matter and the cell structure of microorganisms, thereby efficiently removing microorganisms, bacteria, viruses or organic matter in the sewage.

[0038] By controlling the wavelength of the ultraviolet lamp 220, the killing effect of bacteria, viruses or other microorganisms in the water can be improved. The water body after ultraviolet sterilization can be output through the water outlet 130 on the housing 100, thereby effectively alleviating the membrane fouling problem caused by microbial growth in the subsequent reverse osmosis process, improving the service life of the reverse osmosis device 300, and reducing the difficulty of cleaning the subsequent reverse osmosis device 300.

[0039] In the implementation manner of the present utility model, the designer can adjust the number and wavelength of the ultraviolet lamp beads 220 according to the use requirements, and no specific limitation is made here.

[0040] In a feasible embodiment, at least one first ultraviolet lamp bead with a first wavelength, at least one second ultraviolet lamp bead with a second wavelength, and at least one third ultraviolet lamp bead with a third wavelength are respectively arranged on the lamp board 210, so that three ultraviolet rays of different wavelengths can be generated respectively by the first ultraviolet lamp bead, the second ultraviolet lamp bead and the third ultraviolet lamp bead, and the use of ultraviolet rays of different wavelengths can achieve a better sterilization effect.

[0041] Designers can adjust the specific values ​​of the first wavelength, the second wavelength and the third wavelength according to the use requirements, and no specific limitation is made here. Preferably, the first wavelength can be set to 275nm, the second wavelength can be set to 280nm, and the third wavelength can be set to 295nm.

[0042] Furthermore, a plurality of the first ultraviolet lamp beads, the second ultraviolet lamp beads and the third ultraviolet lamp beads are provided, so that the plurality of ultraviolet lamp beads 220 cooperate with each other, thereby being able to synergistically improve the intensity of ultraviolet radiation and having a better sterilization effect.

[0043] In an embodiment of the present invention, the ultraviolet sterilization device further includes an ultraviolet control module 230 , which is electrically connected to each ultraviolet lamp bead 220 . The ultraviolet control module 230 can be used to control each ultraviolet lamp bead 220 to turn on or off.

[0044] By electrically connecting the ultraviolet control module 230 to each ultraviolet lamp bead 220 , the ultraviolet control module 230 can be used to control the on / off state of each ultraviolet lamp bead 220 , thereby having better control flexibility.

[0045] Especially when the ultraviolet lamp beads 220 are configured with multiple different wavelengths, the ultraviolet lamp beads 220 of any wavelength can be controlled to start or shut down through the ultraviolet control module 230, thereby generating ultraviolet rays of one wavelength or ultraviolet rays of multiple wavelengths, which has better flexibility of use.

[0046] Designers can adjust the specific structure of the ultraviolet control module 230 according to usage requirements. For example, the ultraviolet control module 230 includes an ultraviolet controller, and the ultraviolet controller includes a circuit board and control elements and control buttons arranged on the circuit board, etc., which are not specifically limited here.

[0047] In the embodiment of the present utility model, the ultraviolet lamp bead 220 is an ultraviolet LED lamp bead. By using the ultraviolet LED lamp bead as the ultraviolet light-emitting element, the ultraviolet LED lamp bead has better luminous efficiency and longer service life than the ultraviolet mercury lamp, which helps to reduce the frequency of subsequent maintenance and overhaul, and has better economic benefits. In addition, the ultraviolet LED lamp bead will not cause the problem of mercury pollution.

[0048] In addition, UV LED lamp beads can reach optimal working conditions without preheating, have better operating stability and lower energy consumption, which helps to reduce subsequent UV disinfection costs.

[0049] By using ultraviolet LED lamp beads to generate ultraviolet rays to disinfect sewage, there is no need to use additional chemical reagents, avoiding problems such as chemical pollution.

[0050] Designers can adjust the specific model of the UV LED lamp beads according to usage requirements, and no specific restrictions are made here.

[0051] In an embodiment of the present utility model, the lamp board 210 includes a core board, which is fixedly disposed in the flow chamber 110 , and each ultraviolet lamp bead 220 is arranged at intervals on the core board.

[0052] The core plate can better fix each UV lamp bead 220, thereby improving the installation stability of the UV lamp bead 220. In addition, by arranging each UV lamp bead 220 on the core plate at intervals, interference caused by the UV lamp bead 220 being too close is avoided, thereby improving the luminous efficiency of the UV lamp bead 220.

[0053] The designer can adjust the arrangement of the ultraviolet lamp beads 220 on the core board according to the use requirements, and no specific restrictions are imposed here. Preferably, the ultraviolet lamp beads 220 of different wavelengths can be arranged alternately on the core board, so that the ultraviolet lamp beads 220 of each single wavelength can evenly cover the flow cavity 110 after being started, which helps to improve the uniformity of sterilization.

[0054] In the implementation manner of the present utility model, a plurality of groups of ultraviolet generating units 200 are provided, and each ultraviolet generating unit 200 is provided with a spacer ring in the flow chamber 110 .

[0055] By arranging multiple groups of ultraviolet generating units 200 in the flow chamber 110, the ultraviolet radiation intensity is improved by utilizing the coordinated cooperation of the multiple groups of ultraviolet generating units 200, which has better ultraviolet irradiation uniformity and can avoid sterilization dead corners in the flow chamber 110, thereby achieving a better sterilization effect.

[0056] Designers can adjust the number and arrangement of the ultraviolet generating units 200 according to usage requirements, and no specific restrictions are imposed herein.

[0057] In an embodiment of the present invention, the shell 100 includes a cylinder 140 and a first end cover 150 and a second end cover 160 respectively disposed at both ends of the cylinder 140 , and the water inlet 120 and the water outlet 130 are respectively disposed on the first end cover 150 and the second end cover 160 .

[0058] By respectively arranging the first end cap 150 and the second end cap 160 at both ends of the barrel 140, and opening the first end cap 150 and / or the second end cap 160, it is convenient to install the ultraviolet sterilization unit in the flow chamber 110 in the barrel 140, which has better installation efficiency. In addition, by removing the first end cap 150 and / or the second end cap 160, it is also helpful to improve the maintenance efficiency of the ultraviolet sterilization component.

[0059] Preferably, the first end cap 150 and the second end cap 160 are both detachably connected to the barrel 140. Designers can adjust the detachable manner between the first end cap 150 and the second end cap 160 and the barrel 140 according to the use requirements, such as threaded connection, clamping connection or connection through a connector, etc., which is not specifically limited here.

[0060] Implementation Method 2

[0061] Please refer to Figure 1 and Figure 2 As shown, a reverse osmosis system is also provided in an embodiment of the utility model, which reverse osmosis system includes the ultraviolet sterilization device described in embodiment one, and a reverse osmosis device 300, the reverse osmosis device 300 includes a pure water outlet, a concentrated water outlet and a sewage inlet, and the water outlet 130 of the ultraviolet sterilization device is connected to the sewage inlet.

[0062] The specific structure, working principle and beneficial effects of the ultraviolet sterilization device are the same as those described in the first embodiment, and will not be repeated here. The reverse osmosis system can effectively kill bacteria, viruses or other microorganisms in water by using the ultraviolet sterilization device in the first embodiment, thereby effectively alleviating the membrane fouling problem caused by the growth of microorganisms in the subsequent reverse osmosis process, increasing the service life of the reverse osmosis device 300, and reducing the difficulty of cleaning the subsequent reverse osmosis device 300.

[0063] In the embodiment of the utility model, it also includes a flow pipe 400 and a water conveying device 500 arranged on the flow pipe 400. The flow pipe 400 connects the water outlet 130 of the ultraviolet sterilization device with the sewage inlet.

[0064] When the reverse osmosis system is used, the sewage to be treated is input into the flow pipe 400, and the ultraviolet sterilization device can effectively inactivate the microorganisms in the sewage, thereby preventing the membrane fouling caused by the growth of microorganisms. In addition, the sewage after sterilization can be transported to the reverse osmosis device 300 for reverse osmosis treatment, and the solutes in the sewage can be separated by the reverse osmosis membrane in the reverse osmosis device 300, thereby playing an efficient filtering role.

[0065] The utility model uses a sterilizing device to inactivate microorganisms or other organic matter in sewage before reverse osmosis filtration, thereby avoiding the problem of membrane fouling caused by the growth of microorganisms in the reverse osmosis device 300, helping to improve the purification effect and extend the service life of the reverse osmosis device 300.

[0066] The inlet of the flow pipe 400 can be connected to a water supply valve, and the flow pipe 400 and the external transmission equipment are connected through the water supply valve, so that the flow rate of sewage input into the flow pipe 400 is controlled by the water supply valve. The designer can adjust the specific structure of the external transmission equipment according to the use requirements, and no specific restrictions are made here.

[0067] In the embodiment of the present utility model, the reverse osmosis device 300 includes an RO filter element, which is formed by an RO membrane. The RO filter element can perform reverse osmosis filtration on sewage, and the RO membrane can separate solutes in the sewage, thereby improving the filtration efficiency.

[0068] In addition, by using a sterilization device to inactivate and sterilize the sewage entering the RO filter element in advance, the microbial content in the sewage is significantly reduced, which helps prevent membrane fouling caused by microbial growth, thereby reducing the difficulty of subsequent RO membrane cleaning.

[0069] Of course, in other feasible embodiments, designers can adjust the specific structure of the reverse osmosis device 300 according to usage requirements, and no specific limitation is made here.

[0070] In an embodiment of the present utility model, a liquid inlet control valve 410 is provided on the flow pipe 400 located upstream and / or downstream of the water conveying device 500 .

[0071] Preferably, the flow pipes 400 located upstream and downstream of the water conveying device 500 are provided with liquid inlet control valves 410. By providing the liquid inlet control valves 410 on the flow pipes 400, it is convenient to control the on-off state of the flow pipes 400, and it has better adjustment flexibility. The designer can adjust the specific model of the liquid inlet control valve 410 according to the use requirements, and no specific limitation is made here.

[0072] In the embodiment of the utility model, a pulsation damper 600 is further included. The pulsation damper 600 is connected to the flow pipeline 400 and is placed between the water transport device 500 and the reverse osmosis device 300 .

[0073] By setting a pulsation damper 600 on the flow pipe 400, the pulsation damper 600 can absorb the pulsating pressure and flow fluctuation of the sewage in the flow pipe 400, thereby reducing the sewage pressure and flow fluctuation in the reverse osmosis system, which helps to improve the operating stability of the system.

[0074] Designers can adjust the specific structure of the pulsation damper 600 according to usage requirements, and no specific restrictions are made here.

[0075] In the embodiment of the utility model, a sampling branch pipe 700 is provided on the flow pipeline 400 . The sampling branch pipe 700 is provided between the water transport device 500 and the reverse osmosis device 300 . A sampling control valve 710 is provided on the sampling branch pipe 700 .

[0076] By arranging the sampling branch pipe 700 on the flow pipe 400 and opening the sampling control valve 710 on the sampling branch pipe 700 , part of the sewage in the flow pipe 400 can be discharged for sampling operation, thereby improving the sampling efficiency.

[0077] Furthermore, by analyzing and studying the sampled water, it is also helpful to timely obtain information such as the content of microorganisms in the water upstream of the reverse osmosis device 300, so that the operator can adjust the operating status of equipment such as the ultraviolet sterilization device in a timely manner.

[0078] In an embodiment of the utility model, an external discharge pipeline 800 and a water outlet pipeline 900 are also included. The external discharge pipeline 800 is connected to the concentrated water outlet, and an external discharge check valve 810 is provided on the external discharge pipeline 800; the water outlet pipeline 900 is connected to the pure water outlet, and a flow meter 910 is provided on the water outlet pipeline 900.

[0079] By connecting the external discharge pipeline 800 with the concentrated water outlet on the reverse osmosis device 300, the concentrated water generated by the reverse osmosis filtration can be quickly discharged for treatment by using the external discharge pipeline 800. In addition, by providing an external discharge control valve on the external discharge pipeline 800, it is convenient to control the on-off state of the external discharge pipeline 800, which has a better control effect.

[0080] Furthermore, by connecting the water outlet pipe 900 to the pure water outlet on the reverse osmosis device 300, the pure water generated by the reverse osmosis filtration can be quickly discharged through the water outlet pipe 900 for recycling, which significantly improves the utilization rate of waste water in the steel production process and plays a role in energy saving and consumption reduction. Furthermore, by providing a flow meter 910 on the water outlet pipe 900, it is helpful to obtain the flow rate of pure water in a timely manner.

[0081] In the implementation mode of the utility model, the designer can adjust the installation mode of each component according to the use requirements, and no specific limitation is made here. Preferably, each pipeline and valve in the overflow reverse osmosis system are connected by SS316 sleeve pipes.

[0082] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0083] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An ultraviolet sterilization device, characterized in that: include: A shell, the shell comprising a flow cavity, and a water inlet and a water outlet communicating with the flow cavity; An ultraviolet generating unit is arranged in the flow cavity, and the ultraviolet generating unit includes a lamp board and a plurality of ultraviolet lamp beads arranged on the lamp board, and the wavelength of at least one of the ultraviolet lamp beads is different from the wavelengths of the other ultraviolet lamp beads.

2. The ultraviolet sterilization device according to claim 1, characterized in that: The ultraviolet sterilization device also includes an ultraviolet control module, which is electrically connected to each of the ultraviolet lamp beads and can be used to control each of the ultraviolet lamp beads to turn on or off.

3. The ultraviolet sterilization device according to claim 1, characterized in that: The ultraviolet lamp beads are ultraviolet LED lamp beads.

4. The ultraviolet sterilization device according to claim 1, characterized in that: The lamp board comprises a core board, the core board is fixedly arranged in the flow cavity, and the ultraviolet lamp beads are arranged on the core board at intervals.

5. The ultraviolet sterilization device according to claim 1, characterized in that: The ultraviolet generating units are provided in a plurality of groups, and the spacing rings of the ultraviolet generating units are arranged in the flow cavity.

6. The ultraviolet sterilization device according to claim 1, characterized in that: The shell includes a cylinder, and a first end cover and a second end cover respectively arranged at two ends of the cylinder, and the water inlet and the water outlet are respectively arranged on the first end cover and the second end cover.

7. A reverse osmosis system, characterized in that: It comprises an ultraviolet sterilization device as described in any one of claims 1 to 6, and a reverse osmosis device, wherein the reverse osmosis device comprises a pure water outlet, a concentrated water outlet and a sewage inlet, and the water outlet of the ultraviolet sterilization device is connected to the sewage inlet.

8. The reverse osmosis system according to claim 7, characterized in that: It also includes a flow pipe and a water conveying device arranged on the flow pipe, and the flow pipe is connected with the water outlet of the ultraviolet sterilization device and the sewage inlet.

9. The reverse osmosis system according to claim 8, characterized in that: A liquid inlet control valve is provided on the flow pipeline located upstream and / or downstream of the water body conveying device.

10. The reverse osmosis system according to claim 8, characterized in that It also includes a pulsation damper, which is connected to the flow pipe and is placed between the water conveying device and the reverse osmosis device.

11. The reverse osmosis system according to claim 8, characterized in that A sampling branch pipe is provided on the flow pipeline, the sampling branch pipe is arranged between the water conveying device and the reverse osmosis device, and a sampling control valve is provided on the sampling branch pipe.

12. The reverse osmosis system according to claim 8, characterized in that It also includes an external discharge pipeline and a water outlet pipeline. The external discharge pipeline is connected to the concentrated water outlet, and an external discharge check valve is arranged on the external discharge pipeline; the water outlet pipeline is connected to the pure water outlet, and a flow meter is arranged on the water outlet pipeline.

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