Medium-pressure ultraviolet ray and ozone combined sterilization packaged drinking water production device

Abstract

The utility model discloses a medium-pressure ultraviolet ray and ozone combined sterilization packaged drinking water production device which comprises a controller, an ozone generator, a gas-liquid mixing pump, and a booster pump, a bromide removal resin tank, a medium-pressure ultraviolet sterilizer, a mixing pipeline and a buffer water tank which are sequentially connected in series, a gas outlet of the ozone generator is connected with a gas inlet of the gas-liquid mixing pump, an ozone analyzer is arranged in the buffer water tank, an electric blow-down valve is arranged at the bottom of the buffer water tank, a sampling valve is arranged on the side portion of the buffer water tank, and a conductivity analyzer is arranged on a pipeline between the medium-pressure ultraviolet sterilizer and the mixing pipeline. The controller is electrically connected with the booster pump, the bromide removal resin tank, the medium-pressure ultraviolet sterilizer, the ozone generator, the gas-liquid mixing pump, the ozone analyzer, the conductivity analyzer, the pneumatic angle seat valve and the electric blow-down valve respectively. By using the device, the problems that a single disinfection mode is not thorough and bromate exceeds the standard can be solved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a packaged drinking water production device for combined sterilization by medium-pressure ultraviolet rays and ozone. Background Art

[0002] Currently, ozone disinfection is a commonly used water sterilization method in the production of packaged drinking water. However, the source water used in packaged drinking water production commonly contains bromide. Traditional ozone disinfection technology has significant drawbacks when used to produce non-purified water products containing trace elements, such as mountain spring water and mineral water. Low ozone concentrations result in incomplete destruction of many harmful microorganisms, while high ozone concentrations can easily produce bromate, a disinfection byproduct. The difficulty in accurately controlling the ozone disinfection dosage leads to frequent substandard packaged drinking water. Utility Model Content

[0003] To this end, the present invention provides a packaged drinking water production device for combined sterilization using medium-pressure ultraviolet light and ozone to solve or alleviate one or more of the above-mentioned problems.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A packaged drinking water production device for combined sterilization of medium-pressure ultraviolet light and ozone, comprising a booster pump, a bromide removal resin tank, a medium-pressure ultraviolet sterilizer, a gas-liquid mixing pump, an ozone generator, a mixing pipeline, a buffer water tank, and a controller, wherein the booster pump, the bromide removal resin tank, the medium-pressure ultraviolet sterilizer, the mixing pipeline, and the buffer water tank are connected in series in sequence, the gas-liquid mixing pump comprises an air inlet, a liquid inlet, and a liquid outlet, the air outlet of the ozone generator is connected to the air inlet of the gas-liquid mixing pump, the liquid inlet and the liquid outlet of the gas-liquid mixing pump are respectively connected to the mixing pipeline, and the gas The liquid inlet of the liquid mixing pump is located in front of the liquid outlet. The buffer water tank is provided with an ozone analyzer, a liquid level sensor and a liquid level switch. The bottom of the buffer water tank is provided with an electric drain valve, and the side of the buffer water tank is provided with a sampling valve. A conductivity analyzer is provided on the pipeline between the medium-pressure ultraviolet sterilizer and the mixing pipeline. The controller is electrically connected to the booster pump, bromide removal resin tank, medium-pressure ultraviolet sterilizer, ozone generator, gas-liquid mixing pump, ozone analyzer, liquid level sensor, liquid level switch, conductivity analyzer, pneumatic angle seat valve, and electric drain valve respectively.

[0006] Furthermore, the packaged drinking water production device also includes a touch screen, and the touch screen is electrically connected to the controller.

[0007] Furthermore, the packaged drinking water production device also includes a main pipeline and a bypass pipeline, one end of the main pipeline is used to connect to the water source, and the other end is connected to the water inlet of the buffer water tank, the booster pump and the mixing pipeline are connected in series to the main pipeline, and the bypass pipeline is connected in parallel to the main pipeline, and the bypass pipeline is provided with two groups, the bromide removal resin tank is connected in series to one group of the bypass pipelines, and the medium-pressure ultraviolet sterilizer is connected in series to the other group of the bypass pipelines, the inlet and outlet sections of the bypass pipeline are respectively provided with manual butterfly valves, and the section of the main pipeline parallel to the bypass pipeline is provided with a ball valve.

[0008] Furthermore, the packaged drinking water production device also includes a float flowmeter, which is arranged on the vertical pipeline between the mixing pipeline and the buffer water tank.

[0009] Furthermore, the packaged drinking water production device also includes a backflow prevention barrel and a gas main pipe, the air outlet of the ozone generator is connected to the air inlet of the backflow prevention barrel, and the air outlet of the backflow prevention barrel is connected to the air inlet of the gas-liquid mixing pump through the gas main pipe.

[0010] Furthermore, the packaged drinking water production device also includes an exhaust pipe, one end of which extends outdoors, and the other end is connected to the gas main pipe. A normally closed pneumatic angle seat valve is installed on the pipeline of the gas main pipe between the exhaust pipe and the gas-liquid mixing pump, and a normally open pneumatic angle seat valve is installed on the exhaust pipe.

[0011] Furthermore, the packaged drinking water production device also includes a breathing filter and an exhaust pipe. The breathing filter is installed on the top of the buffer water tank. One end of the exhaust pipe is connected to the breathing filter, and the other end extends outdoors.

[0012] The utility model has the following advantages:

[0013] The source water is first debrominated in a bromide removal resin tank, and the debrominated water is then sterilized by medium-pressure ultraviolet light in a medium-pressure ultraviolet sterilizer. The sterilized water is preliminarily mixed with ozone delivered by an ozone generator at a gas-liquid mixing pump, and the mixed water flows along the mixing pipeline to the buffer water tank, where it is sterilized by ozone. By introducing a physical sterilization method using medium-pressure ultraviolet pre-sterilization, the ozone dosage concentration can be reduced during ozone sterilization, the degree of chemical reaction during the sterilization process is reduced, and the production of bromate is avoided; the bromide concentration in the water is reduced by using a bromide removal resin tank, the source of chemical reaction substances is reduced, and thus the production of bromate during ozone sterilization is better avoided; the ozone concentration in the buffer water tank is obtained by an ozone analyzer, thereby obtaining the actual ozone production (g / h) of the ozone generator, and the actual ozone production corresponds to the theoretical ozone production (g / h) on the ozone generator; the sterilized water sample is obtained through a sampling valve and sent for inspection to obtain the bromate content to determine whether it exceeds the standard; the water in the buffer water tank is drained through an electric drain valve, and a test can be carried out to determine whether the bromate content exceeds the standard under different ozone dosage concentrations with water sources with different bromine contents; in this way, the parameters of theoretical ozone production can be provided to manufacturers of packaged drinking water, thereby accurately controlling the ozone dosage.

[0014] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, provided they do not affect the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0017] Figure 1 This is a structural schematic diagram of a packaged drinking water production device for combined sterilization of medium-pressure ultraviolet light and ozone provided in an embodiment of the present invention.

[0018] Figure 2 This is a control principle diagram of a packaged drinking water production device with medium-pressure ultraviolet and ozone combined sterilization provided in an embodiment of the utility model.

[0019] In the figure: 1-main pipeline, 2-boosting pump, 3-bromide removal resin tank, 4-ball valve, 5-manual butterfly valve, 6-medium-pressure ultraviolet sterilizer, 7-conductivity analyzer, 8-gas-liquid mixing pump, 9-mixing pipeline, 10-float flowmeter, 11-ozone generator, 12-anti-backwater bucket, 13-gas main pipe, 14-pneumatic angle seat valve, 15-exhaust pipe, 16-breathing filter, 17-buffer water tank, 18-sampling valve, 19-liquid level sensor, 20-electric drain valve, 21-ozone analyzer, 22-liquid level switch, 23-controller, 24-touch screen. DETAILED DESCRIPTION

[0020] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0021] Currently, ozone disinfection is a commonly used water sterilization method in the production of packaged drinking water. However, the source water used in packaged drinking water production commonly contains bromides. Using traditional ozone disinfection technology to produce impure water products containing trace elements, such as mountain spring water and mineral water, is prone to producing a disinfection byproduct called bromate, which can lead to substandard product quality. Bromate has been designated a Class 2B potential carcinogen by the International Agency for Research on Cancer. GB 5749-2022, "Standard for Drinking Water Quality," stipulates that the limit for bromate in drinking water is 0.01 mg / L. This standard is consistent with the World Health Organization's regulations.

[0022] Ozone disinfection technology has significant drawbacks in the production of products such as mountain spring water and mineral water: low ozone levels prevent the complete destruction of many harmful microorganisms, while high ozone levels can easily produce bromate. The difficulty in accurately controlling the ozone dosage leads to frequent substandard packaged drinking water, a significant problem for many packaged drinking water manufacturers. Therefore, UV technology, as a physical sterilization method, produces no byproducts and offers greater safety and security. Low-pressure UV sterilization technology is incomplete and can cause secondary contamination, while medium-pressure UV technology, due to its broad spectrum, offers more thorough sterilization. Using a combination of medium-pressure UV and ozone sterilization technology for water sterilization in the production of packaged drinking water can prevent excessive bromate levels while ensuring effective sterilization.

[0023] like Figure 1 and 2As shown, this embodiment provides a packaged drinking water production device for combined sterilization of medium-pressure ultraviolet light and ozone, including a booster pump 2, a bromide removal resin tank 3, a medium-pressure ultraviolet sterilizer 6, a gas-liquid mixing pump 8, an ozone generator 11, a mixing pipeline 9, and a buffer water tank 17.

[0024] The water inlet of booster pump 2 is connected to a water source, such as a water storage tank at a packaged drinking water plant. The water in this water storage tank is filtered, but not sterilized. The water outlet of booster pump 2 is connected to the water inlet of bromide removal resin tank 3, which in turn is connected to the water inlet of medium-pressure UV sterilizer 6. Medium-pressure UV sterilizer 6 performs medium-pressure UV sterilization on the water flowing through it, killing most harmful microorganisms. Turning on booster pump 2 pumps filtered water from the water plant's water storage tank and passes it through bromide removal resin tank 3 for debromination. The debrominated water is then supplied to medium-pressure UV sterilizer 6 for preliminary sterilization (also known as primary sterilization, which in this embodiment refers to medium-pressure UV sterilization).

[0025] The water outlet of the medium-pressure ultraviolet sterilizer 6 is connected to the water inlet of the mixing pipe 9. The gas-liquid mixing pump 8 includes an air inlet, a liquid inlet and a liquid outlet. The air outlet of the ozone generator 11 is connected to the air inlet of the gas-liquid mixing pump 8. The liquid inlet and liquid outlet of the gas-liquid mixing pump 8 are respectively connected to the mixing pipe 9, and the liquid inlet of the gas-liquid mixing pump is located in front of the liquid outlet (the direction from which the preliminary sterilization water flows). Generally, the liquid inlet of the gas-liquid mixing pump 8 is connected at or near the water inlet of the mixing pipe 9, and the liquid outlet of the gas-liquid mixing pump 8 is close to the liquid inlet. The water after preliminary sterilization is supplied to the gas-liquid mixing pump 8 and mixed with the ozone supplied by the ozone generator 11 in the gas-liquid mixing pump 8. The mixing pipe 9 can adopt a spiral mixing tube with a turbulent sheet inside. Under the action of the turbulent sheet, the gas-liquid mixed fluid transported by the gas-liquid mixing pump 8 is thoroughly crushed, so that the ozone is broken up into tiny bubbles and integrated into the water.

[0026] Since this device is not directly used for production, but rather for testing the ozone dosage required for specific source water (referring to water used for production at the water plant site; the bromide ion content in water used for production varies from location to location and from manufacturer to manufacturer, hence the name "specific source water"), the outlet of mixing line 9 is connected to the inlet of buffer water tank 17 to temporarily store the mixed water produced during the test (referring to water that has been initially sterilized by bromine removal and then mixed with ozone). An ozone analyzer 21 is located outside buffer water tank 17, with its probe inside, for online, real-time monitoring of ozone concentration (content and supply). A liquid level sensor 19 and a liquid level switch 22 are also located outside buffer water tank 17, with their probes inside, for sensing the liquid level within the tank. An electric drain valve 20 is installed at the bottom of the buffer water tank 17. During multiple tests, the electric drain valve 20 is opened to drain the water sample from the buffer water tank 17 before each test. A sampling valve 18 is provided on the side of the buffer water tank 17. Opening this valve allows sampling. After the sample is sent for testing, the bromate content can be determined, allowing for determination of whether sterilization of the specific source water at the specified ozone dosage would result in excessive bromate levels. The sampling valve 18 is typically located on the side, near the bottom, for easy sampling. A conductivity analyzer 7 is installed in the pipeline between the bromide removal resin tank 3 and the mixing line 9, with its probe located within the pipeline. A controller 23 is electrically connected to the booster pump 2, bromide removal resin tank 3, medium-pressure UV sterilizer 6, pneumatic angle seat valve 14, ozone generator 11, ozone analyzer 21, liquid level sensor 19, liquid level switch 22, conductivity analyzer 7, and electric drain valve 20, controlling the operating status of each component.

[0027] The system operates as follows: the system operates normally; controller 23 opens electric drain valve 20 and closes it 10 seconds later. Controller 23 activates booster pump 2, bromide removal resin tank 3, medium-pressure UV sterilizer 6, gas-liquid mixing pump 8, and ozone generator 11 to pump water, remove bromine, perform preliminary sterilization, and perform gas-liquid mixing. When the water level in buffer water tank 17 reaches a high level, booster pump 2, medium-pressure UV sterilizer 6, gas-liquid mixing pump 8, and ozone generator 11 are shut down. Sampling valve 18 is opened for sampling. Before the next normal sampling, booster pump 2 is activated for flushing. When the water level in buffer water tank 17 reaches a high level, booster pump 2, medium-pressure UV sterilizer 6, gas-liquid mixing pump 8, and ozone generator 11 are forcibly shut down. Controller 23 also controls the power on and off of conductivity analyzer 7 and ozone analyzer 21. Generally, upon system startup, controller 23, conductivity analyzer 7, and ozone analyzer 21 are activated simultaneously. In this embodiment, the electric drain valve 20 is an electric butterfly valve, which is controlled by the controller 23 .

[0028] The source water is first debrominated by the bromide removal resin tank 3, and then sterilized by medium-pressure ultraviolet light in the medium-pressure ultraviolet sterilizer 6. The water after primary sterilization is preliminarily mixed with the ozone delivered by the ozone generator 11 at the gas-liquid mixing pump 8. The mixed water flows along the mixing pipe 9 to the buffer water tank 17, and the mixed water is sterilized by ozone. By introducing a physical sterilization method by adopting the medium-pressure ultraviolet pre-sterilization method, the ozone addition concentration can be reduced during the ozone sterilization process, the degree of chemical reaction during the sterilization process is reduced, and the production of bromate is avoided; the bromide concentration in the water is reduced by the bromide removal resin tank 3, and the source of chemical reaction substances is reduced, thereby better avoiding the production of bromate during the ozone sterilization process; the ozone concentration in the buffer water tank 17 is obtained by the ozone analyzer 21, thereby obtaining the actual ozone production (g / h) of the ozone generator 11. The actual ozone production corresponds to the ozone The theoretical ozone production (g / h) on the generator 11; obtain the sterilized water sample through the sampling valve 18, send it for inspection to obtain the bromate content, and judge whether it exceeds the standard; drain the water in the buffer water tank 17 through the electric drain valve 20, and conduct a test on whether the bromate content exceeds the standard under different ozone addition concentrations with water sources with different bromine contents; in this way, the parameters of the theoretical ozone production can be provided to manufacturers of packaged drinking water, so as to adjust the theoretical ozone production of the ozone generator 11, thereby accurately controlling the ozone dosage and avoiding the problem of unqualified packaged drinking water.

[0029] In one embodiment, the packaged drinking water production device further includes a touch screen 24 electrically connected to the controller 23. Control parameters or instructions are input through the touch screen 24, and the operating status or parameters of various components are displayed. In this embodiment, the ozone analyzer 21 is electrically connected to the controller 23, so that data from the ozone analyzer 21 can be displayed on the touch screen 24.

[0030] In one embodiment, the packaged drinking water production device also includes a main pipeline 1 and a bypass pipeline. One end of the main pipeline 1 is used to connect to the water source, and the other end is connected to the water inlet of the buffer water tank 17. The booster pump 2 and the mixing pipeline 9 are connected in series to the main pipeline 1, and the bypass pipeline is connected to the main pipeline 1 in parallel. There are two groups of bypass pipelines. The bromide removal resin tank 3 is connected in series to one group of bypass pipelines, and the medium-pressure ultraviolet sterilizer 6 is connected in series to the other group of bypass pipelines. The water inlet section and the water outlet section of the bypass pipeline are respectively provided with manual butterfly valves 5, and the pipe section of the main pipeline 1 parallel to the bypass pipeline is provided with a ball valve 4. When the ball valve 4 is closed and the manual butterfly valve 5 is opened, the water will flow through the bromide removal resin tank 3 and / or the medium-pressure ultraviolet sterilizer 6; when the manual butterfly valve 5 is closed and the ball valve 4 is opened, the source water will not pass through the bromide removal resin tank 3 and / or the medium-pressure ultraviolet sterilizer 6; in this way, when modifying existing water plant equipment, for manufacturers who do not add bromide removal resin tanks 3 and / or medium-pressure ultraviolet sterilizers 6, the packaged drinking water production device of this embodiment can also be used to test the ozone supply amount.

[0031] In one embodiment, the packaged drinking water production device further includes a float flowmeter 10, which is disposed on a vertical pipe (a section of the main pipe 1) between the mixing pipe 9 and the buffer water tank 17. The float flowmeter 10 can be used to determine the flow rate during the test.

[0032] In one embodiment, the packaged drinking water production apparatus further includes a backflow prevention barrel 12 and a gas main 13. The air outlet of the ozone generator 11 is connected to the air inlet of the backflow prevention barrel 12, which in turn is connected to the air inlet of the gas-liquid mixing pump 8 via the gas main 13. The ozone generated by the ozone generator 11 is delivered to the gas-liquid mixing pump 8 via the gas main 13. The backflow prevention barrel 12 prevents water from flowing back into the ozone generator 11 during shutdown. Ozone generators 11 are available in oxygen and air types; in this embodiment, an oxygen type ozone generator 11 is used.

[0033] In one embodiment, the packaged drinking water production apparatus further includes an exhaust pipe 15, one end of which extends outdoors and the other end is connected to the main gas pipe 13. A normally closed pneumatic angle seat valve 14 is installed on the pipe of the main gas pipe 13 between the exhaust pipe 15 and the gas-liquid mixing pump 8, and a normally open pneumatic angle seat valve 14 is installed on the exhaust pipe 15. After the ozone generator 11 is shut down, ozone remaining in the exhaust pipe 15 will escape into the surrounding environment. By providing the exhaust pipe 15, the remaining ozone can be discharged outdoors. By providing the normally closed pneumatic angle seat valve 14 and the normally open pneumatic angle seat valve 14, the two pneumatic angle seat valves 14 operate under the control of the controller 23, ensuring both normal ozone delivery and the discharge of residual ozone.

[0034] In one embodiment, the packaged drinking water production apparatus further includes a breathing filter 16 and an exhaust pipe 15. The breathing filter 16 is mounted on top of a buffer water tank 17. One end of the exhaust pipe 15 is connected to the breathing filter 16, and the other end extends outdoors. This allows residual ozone in the buffer water tank 17 to be exhausted outdoors. It should be noted that the two exhaust pipes 15 can be combined into one, sharing the same exhaust pipe.

[0035] The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet light and ozone provided in this embodiment has the following characteristics:

[0036] 1. It can effectively control the production of bromate, a disinfection byproduct. While packaged drinking water technology is highly mature, using ozone sterilization alone is challenging due to the fluidity of the source water and the uncertainty of bromide content. Ensuring sterilization effectiveness and meeting microbial indicators while simultaneously reducing the production of bromate, a disinfection byproduct, is challenging. By introducing physical sterilization methods and pre-sterilizing with medium-pressure ultraviolet light, the team reduced the degree of chemical reaction during the sterilization process and minimized bromate production. Furthermore, by adding bromide-removing resin tanks, the concentration of bromide in the water was reduced, minimizing the source of chemically reactive substances and thereby better preventing the production of bromate during the ozone sterilization process.

[0037] 2. Excellent water sterilization effect. Based on medium-pressure UV pre-sterilization, the ozone dosage concentration is reduced. By designing ozone sterilization after medium-pressure UV pre-sterilization, UV decomposition of ozone is avoided. This device can be used to conduct a large number of water sterilization tests and study and determine a dynamic control system for ozone dosage. First, under the same bromide content, the ozone concentration is varied to measure the limit index, bromate, total bacterial count, and Pseudomonas aeruginosa content in the finished water. Second, under the same ozone concentration, different bromide contents are added to the feed water to measure bromate, limit index, total bromide bacterial count, and Pseudomonas aeruginosa content in the finished water. Therefore, during the sterilization device application process, the ozone dosage is dynamically adjusted for water sources with different bromide contents, reducing the economic investment in ozone equipment and ensuring water sterilization effectiveness.

[0038] 3. Low investment in production line modification and equipment costs. This device builds on the existing ozone sterilization process of packaged drinking water manufacturers by adding a medium-pressure UV sterilizer, avoiding the waste of resources that would result from large-scale production line modifications. Furthermore, the medium-pressure UV sterilizer is inexpensive, and scientifically determined medium-pressure UV process parameters can reduce losses during use. For packaged drinking water manufacturers, this device can cost-effectively address excessive bromate levels and improve product quality control.

[0039] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 should not be understood as a limitation on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0041] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The disclosure above provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0044] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A packaged drinking water production device for combined sterilization of medium-pressure ultraviolet light and ozone, characterized in that: The invention comprises a booster pump, a bromide removal resin tank, a medium-pressure ultraviolet sterilizer, a gas-liquid mixing pump, an ozone generator, a mixing pipeline, a buffer water tank and a controller. The booster pump, the bromide removal resin tank, the medium-pressure ultraviolet sterilizer, the mixing pipeline and the buffer water tank are connected in series in sequence. The gas-liquid mixing pump comprises an air inlet, a liquid inlet and a liquid outlet. The air outlet of the ozone generator is connected to the air inlet of the gas-liquid mixing pump. The liquid inlet and the liquid outlet of the gas-liquid mixing pump are respectively connected to the mixing pipeline, and the liquid inlet of the gas-liquid mixing pump is located at the liquid outlet. In front of the buffer water tank, an ozone analyzer, a liquid level sensor and a liquid level switch are provided in the buffer water tank, an electric drain valve is provided at the bottom of the buffer water tank, a sampling valve is provided on the side of the buffer water tank, and a conductivity analyzer is provided on the pipeline between the medium-pressure ultraviolet sterilizer and the mixing pipeline. The controller is electrically connected to the booster pump, bromide removal resin tank, medium-pressure ultraviolet sterilizer, ozone generator, gas-liquid mixing pump, ozone analyzer, liquid level sensor, liquid level switch, conductivity analyzer, pneumatic angle seat valve and electric drain valve respectively.

2. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 1 is characterized in that: The packaged drinking water production device also includes a touch screen, which is electrically connected to the controller.

3. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 1, characterized in that: The packaged drinking water production device also includes a main pipeline and a bypass pipeline. One end of the main pipeline is used to connect to the water source, and the other end is connected to the water inlet of the buffer water tank. The booster pump and the mixing pipeline are connected in series to the main pipeline, and the bypass pipeline is connected in parallel to the main pipeline. There are two groups of bypass pipelines. The bromide removal resin tank is connected in series to one group of bypass pipelines, and the medium-pressure ultraviolet sterilizer is connected in series to the other group of bypass pipelines. The inlet and outlet sections of the bypass pipeline are respectively provided with manual butterfly valves, and the section of the main pipeline parallel to the bypass pipeline is provided with a ball valve.

4. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 1, characterized in that: The packaged drinking water production device further comprises a float flowmeter, which is arranged on the vertical pipeline between the mixing pipeline and the buffer water tank.

5. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 1, characterized in that: The packaged drinking water production device also includes a backflow prevention barrel and a gas main pipe. The air outlet of the ozone generator is connected to the air inlet of the backflow prevention barrel. The air outlet of the backflow prevention barrel is connected to the air inlet of the gas-liquid mixing pump through the gas main pipe.

6. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 5, characterized in that: The packaged drinking water production device also includes an exhaust pipe, one end of which extends outdoors and the other end is connected to the gas main pipe. A normally closed pneumatic angle seat valve is installed on the pipeline of the gas main pipe between the exhaust pipe and the gas-liquid mixing pump, and a normally open pneumatic angle seat valve is installed on the exhaust pipe.

7. The packaged drinking water production device for combined sterilization of medium-pressure ultraviolet and ozone according to claim 1, characterized in that: The packaged drinking water production device also includes a breathing filter and an exhaust pipe. The breathing filter is installed on the top of the buffer water tank. One end of the exhaust pipe is connected to the breathing filter, and the other end extends outdoors.

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