Purified water distribution system

Abstract

The utility model discloses a purified water distribution system, which belongs to the technical field of purified water, and comprises a purified water storage unit, a water outlet component, a water return component and a discharge component, the water outlet component comprises a water outlet pipeline, a water pump and a sterilizer, and the purified water storage unit is communicated with a water using point through the water outlet pipeline; the water return assembly comprises a water return pipeline, a heat exchanger, a water return valve and a conductivity meter; the water return pipeline is used for communicating the water consumption point with the pure water storage unit; the discharging assembly comprises a discharging pipeline and a discharging valve, the discharging pipeline is connected to a water return pipeline between the water return valve and the conductivity meter, and the conductivity meter is in electric control signal connection with the water return valve and the discharging valve. The water supply and water return functions are achieved through the water outlet assembly and the water return assembly, the conductivity of purified water is detected through the conductivity meter, and when the conductivity exceeds a set value, the water return pipeline is controlled to be closed and the discharge pipeline is controlled to be opened by controlling the opening and closing states of the water return valve and the discharge valve, so that the purified water with the purity not meeting the requirement is discharged.

Description

Technical Field

[0001] This utility model relates to the field of purified water technology, and in particular to a purified water distribution system. Background Technology

[0002] Purified water, also known as deionized water or deeply desalinated water, refers to water treatment methods that remove impurities and ions from water, achieving extremely high purity. Its resistivity is greater than 0.1 x 10⁻⁶ at temperatures above 25°C. 6 Ωcm. Purified water is a colorless, odorless, and tasteless clear liquid, usually produced by distillation, ion exchange, reverse osmosis, or other suitable methods, without any additives.

[0003] A patent titled "A Purified Water Distribution System" has been published in the Chinese Patent Database. The publication (announcement) number is CN205023907U, and the publication (announcement) date is February 10, 2016. This purified water distribution system includes a water storage tank, a circulating pump, an ultraviolet sterilization device, a double tube sheet heat exchanger, and an outlet valve. The water storage tank is connected to the circulating pump, the circulating pump is connected to the ultraviolet sterilization device, the ultraviolet sterilization device is connected to the double tube sheet heat exchanger, and the double tube sheet heat exchanger is connected to the water storage tank. An outlet pipe is provided on the pipe connecting the ultraviolet sterilization device and the double tube sheet heat exchanger, and an outlet valve is provided on the outlet pipe.

[0004] The shortcoming of this patented technology is that purified water may become contaminated during use, leading to an increase in ions and causing the purified water to fail to meet the purity standards. The above-mentioned distribution system cannot effectively respond to this situation. Utility Model Content

[0005] This application provides a purified water distribution system that can distribute purified water and effectively address the problem of substandard purified water purity caused by excessive ion concentration.

[0006] This application provides a purified water distribution system, including:

[0007] Pure water storage unit;

[0008] The water outlet assembly includes: a water outlet pipeline, a water pump, and a sterilizer. The water outlet pipeline connects the pure water storage unit to the point of use. The water pump and the sterilizer are installed in the water outlet pipeline. The water outlet assembly is used to discharge purified water to the point of use.

[0009] The water return assembly includes: a water return pipeline, a heat exchanger, a water return valve, and a conductivity meter. The water return pipeline connects the water usage point to the pure water storage unit. The heat exchanger, the water return valve, and the conductivity meter are installed in the water return pipeline. The water return assembly is used to return the purified water to the pure water storage unit.

[0010] The external discharge assembly includes: an external discharge pipeline and an external discharge valve. The external discharge pipeline is connected to the return water pipeline between the return water valve and the conductivity meter. The conductivity meter is electrically controlled by the return water valve and the external discharge valve. The external discharge branch is used to discharge the returned purified water.

[0011] The beneficial effects of the above embodiments are as follows: purified water is supplied to the water point through the water outlet component, purified water is returned from the water point through the water return component, and the conductivity of the purified water in the water return pipeline is detected by the conductivity meter. When the conductivity exceeds the set value, the opening and closing states of the water return valve and the drain valve are controlled to close the water return pipeline and open the drain pipeline, thereby realizing the function of discharging purified water with unacceptable purity.

[0012] Based on the above embodiments, the embodiments of this application can be further improved as follows:

[0013] In one embodiment of this application: the pure water storage unit includes: a pure water tank and a level transmitter, the level transmitter being connected to the pure water tank and connected to the electrical control signal of the water pump. The beneficial effect of this step is that the level transmitter enables automatic control of the liquid level in the pure water tank.

[0014] In one embodiment of this application: the return water assembly further includes a flow meter, which is connected to the return water pipeline and connected to the water pump's electrical control signal. The beneficial effect of this step is that constant flow control is achieved by controlling the water pump through the flow meter.

[0015] In one embodiment of this application, the heat exchanger is connected to a steam branch and a chilled water branch. The beneficial effect of this step is the heat exchange function of the linear heat exchanger connecting the steam branch and the chilled water branch.

[0016] In one embodiment of this application: the return water assembly further includes: a temperature transmitter and a temperature control valve, the temperature transmitter being connected to the return water pipeline between the water point and the heat exchanger, the temperature control valve being connected to the steam branch and the chilled water branch, and the temperature transmitter being electrically connected to the temperature control valve. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a purified water distribution system;

[0019] Figure 2 This is a schematic diagram of the pure water storage unit.

[0020] Figure 3 This is a schematic diagram of the water outlet assembly.

[0021] Figure 4 This is a partial structural diagram of the water return assembly;

[0022] Figure 5 This is a partial structural diagram of the water return assembly and the external drainage assembly.

[0023] Among them, 1 is a pure water storage unit, 101 is a pure water tank, and 102 is a level transmitter;

[0024] 2. Water outlet assembly, 201. Water outlet pipeline, 202. Water pump, 203. Sterilizer;

[0025] 3 Return water assembly, 301 Return water pipeline, 302 Heat exchanger, 303 Return water valve, 304 Conductivity meter, 305 Flow meter, 306 First steam pipeline, 307 Second steam pipeline, 308 First chilled water pipeline, 309 Second chilled water pipeline, 310 Temperature transmitter, 311 Temperature control valve.

[0026] 4. External discharge components, 401. External discharge pipeline, 402. External discharge valve. Detailed Implementation

[0027] In this application, unless otherwise expressly specified and limited, the terms used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. If electrical or electronic equipment is involved, it can also refer to an electrical connection or a communication signal connection, etc. For those skilled in the art, the specific meaning of different terms in this utility model can be understood according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] like Figure 1-5 As shown, a purified water distribution system includes: a purified water storage unit 1, an outlet water assembly 2, a return water assembly 3, and an external discharge assembly 4. The outlet water assembly 2 includes: an outlet water pipe 201, a water pump 202, and a sterilizer 203. The outlet water pipe 201 connects the purified water storage unit 1 to a point of use. The water pump 202 and the sterilizer 203 are installed in the outlet water pipe 201. The outlet water assembly 2 is used to discharge purified water to the point of use. The return water assembly 3 includes: a return water pipe 301, a heat exchanger 302, a return water valve 303, and a conductivity meter 304. 301 connects the water point to the pure water storage unit 1. The heat exchanger 302, the return water valve 303, and the conductivity meter 304 are installed in the return water pipeline 301. The return water assembly 3 is used to return purified water to the pure water storage unit 1. The external discharge assembly 4 includes: an external discharge pipeline 401 and an external discharge valve 402. The external discharge pipeline 401 is connected to the return water pipeline 301 between the return water valve 303 and the conductivity meter 304. The conductivity meter 304 is electrically controlled by the return water valve 303 and the external discharge valve 402. The external discharge branch is used to discharge the returned purified water.

[0030] In some embodiments of this application, such as Figure 2 As shown, the pure water storage unit 1 includes: a pure water tank 101 and a level transmitter 102. The inlet of the pure water tank 101 is connected to the pure water output pipeline of the pure water preparation system. The level transmitter 102 is connected to the pure water tank 101 and is electrically connected to the purified water dedicated delivery pump 202. Specifically, the level transmitter 102 controls the working state of the pump 202 through a controller. The controller can be a PLC controller or an industrial computer, etc., to realize the function of automatically controlling the liquid level in the pure water tank 101.

[0031] In some embodiments of this application, such as Figure 3 As shown, the return water assembly 3 also includes a flow meter 305, which is connected to the return water pipe 301 and is electrically connected to the water pump 202. Specifically, the flow meter 305 controls the operating state of the water pump 202 through the controller to achieve the function of constant flow control.

[0032] In some embodiments of this application, such as Figure 4As shown, heat exchanger 302 is connected to a steam branch and a chilled water branch. Specifically, heat exchanger 302 is a double tube sheet heat exchanger 302. The steam branch includes a first steam pipe 306 and a second steam pipe 307, and the chilled water branch includes a first chilled water pipe 308 and a second chilled water pipe 309. The first steam pipe 306 and the first chilled water pipe 308 are connected in parallel to the first heat exchange port of heat exchanger 302, and the second steam pipe 307 and the second chilled water pipe 309 are connected in parallel to the second heat exchange port of heat exchanger 302. A Y-type filter and a pneumatic angle seat valve are connected in series in the first steam line 306. A steam trap and a manual ball valve are connected in parallel in the second steam line 307 via the pneumatic angle seat valve. The first steam line 306 is used to introduce industrial steam into the heat exchanger 302, and the second steam line 307 is used to discharge the liquefied condensate after heat exchange in the heat exchanger 302. A pneumatic angle seat valve is configured in the first chilled water line 308, and a pneumatic angle seat valve is configured in the second chilled water line 309. The second chilled water line 309 is used to introduce chilled water into the heat exchanger 302, and the first chilled water line 308 is used to discharge the chilled water. The heat exchange function of the steam branch and the chilled water branch is achieved through the linear heat exchanger 302.

[0033] In some embodiments of this application, such as Figure 4 As shown, the return water assembly 3 also includes a temperature transmitter 310 and a temperature control valve 311. The temperature transmitter 310 is connected to the return water pipeline 301 between the water point and the heat exchanger 302. The temperature control valve 311 is connected to the steam branch and the chilled water branch. The temperature transmitter 310 and the temperature control valve 311 are electrically connected. Specifically, the temperature transmitter 310 controls the temperature control valve 311 through a controller.

[0034] In some embodiments of this application, such as Figure 3 , 5 As shown, the sterilizer 203 is an ultraviolet sterilizer; there are two manual diaphragm valves connected in series in the water outlet pipe 201; the water point is connected to the water supply pipe through the water outlet valve; the return water valve 303 and the external discharge valve 402 are both pneumatic diaphragm valves, and a manual diaphragm valve is also configured between the return water valve 303 and the conductivity meter 304.

[0035] The principle behind this design is that purified water conductivity measurement is a method for detecting the concentration of dissolved ions in water. Conductivity is a measure of a substance's ability to conduct electricity, and its unit is Siemens (S / m). In purified water, the conductivity is very low, typically between 0.1 and 1.0 μS / cm. The level of conductivity is related to the concentration and type of ions in the water. Therefore, by measuring the conductivity of purified water, the purity of the water can be determined, and the concentration and type of dissolved ions in the water can be determined.

[0036] When this purified water distribution system is in operation, it supplies purified water to the water point through the water outlet component 2 and allows the purified water to flow back from the water point through the water return component 3. The conductivity of the purified water in the water return pipeline 301 is detected by the conductivity meter 304. When the conductivity exceeds the set value range, the system controls the opening and closing of the water return valve 303 and the drain valve 402 to close the water return pipeline 301 and open the drain pipeline 401, thereby achieving the function of discharging purified water that does not meet the purity requirements.

[0037] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A purified water distribution system, characterized in that, include: Pure water storage unit; The water outlet assembly includes: a water outlet pipeline, a water pump, and a sterilizer. The water outlet pipeline connects the pure water storage unit to the point of use. The water pump and the sterilizer are installed in the water outlet pipeline. The water outlet assembly is used to discharge purified water to the point of use. The water return assembly includes: a water return pipeline, a heat exchanger, a water return valve, and a conductivity meter. The water return pipeline connects the water usage point to the pure water storage unit. The heat exchanger, the water return valve, and the conductivity meter are installed in the water return pipeline. The water return assembly is used to return the purified water to the pure water storage unit. The external discharge assembly includes: an external discharge pipeline and an external discharge valve. The external discharge pipeline is connected to the return water pipeline between the return water valve and the conductivity meter. The conductivity meter is electrically controlled by the return water valve and the external discharge valve. The external discharge branch is used to discharge the returned purified water.

2. The purified water distribution system according to claim 1, characterized in that, The pure water storage unit includes: a pure water tank and a level transmitter. The level transmitter is connected to the pure water tank and is connected to the water pump electrical control signal.

3. The purified water distribution system according to claim 1, characterized in that, The return water assembly further includes a flow meter, which is connected to the return water pipeline and is connected to the water pump electrical control signal.

4. The purified water distribution system according to claim 1, characterized in that, The heat exchanger is connected to a steam branch and a chilled water branch.

5. The purified water distribution system according to claim 4, characterized in that, The return water assembly further includes: a temperature transmitter and a temperature control valve. The temperature transmitter is connected to the return water pipeline between the water point and the heat exchanger. The temperature control valve is connected to the steam branch and the chilled water branch. The temperature transmitter is electrically connected to the temperature control valve.

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