CN212315643U - Water purification system - Google Patents

Abstract

The utility model provides a water purification system. The water purification system comprises a booster pump, a reverse osmosis filter element and a water tank, wherein a water outlet of the booster pump is connected to a water inlet of the reverse osmosis filter element, a pure water outlet of the reverse osmosis filter element is connected to a water inlet of the water tank, the water purification system also comprises a water outlet pipeline, one end of the water outlet pipeline is connected to a water outlet of the water tank, the other end of the water outlet pipeline is connected to a water outlet device, a water quality detector is arranged on the water outlet; a first end of the return pipeline is connected to the water outlet pipeline, a second end of the return pipeline is connected to the front of the water inlet of the reverse osmosis filter element, and a return electromagnetic valve is arranged on the return pipeline; and the electric control board is connected to the water quality detector and the backflow electromagnetic valve, and controls the backflow electromagnetic valve to be conducted when the total amount of the soluble solids is greater than or equal to a preset threshold value. Like this, ensure that the user when next water intaking, can acquire the pure water that TDS accords with the standard, be favorable to the user healthy.

Description

Water purification system

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a water purification system.

Background

With the pursuit of the public on the quality of life, the water purifier gradually enters the families of people. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The reverse osmosis water purification machine can stop a large amount of ions in raw water before the reverse osmosis filter element under the effect of the high-pressure pump, so that the TDS (total dissolved solids) of the pure water passing through the reverse osmosis filter element meets the standard of direct drinking water. To little flux purifier, the pure water of reverse osmosis filter core preparation can be stored in the water tank, when the user needs the water intaking, can directly follow the water intaking in the water tank, can reduce the time that the user waited for reverse osmosis filter core preparation pure water like this, promotes user experience.

However, in the use process, air can get into the water tank and the pipeline between water tank and the tap from water tank and tap, and the air is mixed with impurity such as bacterium usually, and when the user did not get water for a long time, the pure water that stores in water tank and the above-mentioned pipeline can be polluted by impurity such as bacterium in the air, leads to TDS to rise. When the user gets water next time, the user will take the first section of water with TDS higher than the standard value, which seriously affects the health of the user.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, the utility model provides a water purification system, the water purification system includes booster pump, reverse osmosis filter core and water tank, the delivery port of booster pump is connected to the water inlet of reverse osmosis filter core, the pure water outlet of reverse osmosis filter core is connected to the water inlet of water tank, the water purification system still includes the outlet pipe way, one end of the outlet pipe way is connected to the delivery port of water tank, and the other end is used for being connected to water outlet device, be provided with water quality detector on the outlet pipe way, be used for detecting the total amount of dissoluble solid in the outlet pipe way; a first end of the return pipeline is connected to the water outlet pipeline, a second end of the return pipeline is connected to the front of the water inlet of the reverse osmosis filter element, and a return electromagnetic valve is arranged on the return pipeline; and the electric control board is connected to the water quality detector and the backflow electromagnetic valve, and the electric control board controls the conduction of the backflow electromagnetic valve when the total amount of the soluble solids is greater than or equal to a preset threshold value.

By this arrangement, the TDS of the pure water in the water tank and the water outlet device can be controlled when the user does not take water for a long time. Ensure that the user can acquire the pure water that TDS accords with the standard when the next water intaking, be favorable to the user healthy.

Illustratively, the second end of the return line is connected between a water outlet of the booster pump and a water inlet of the reverse osmosis filter element, and the electronic control board starts the booster pump when the total amount of the soluble solids falls below the preset threshold value. The water flow can pass through the concentrated water outlet of the reverse osmosis filter element and the concentrated water electromagnetic valve in turn to be discharged out of the water purification system.

Illustratively, the water outlet of the water tank is higher than the water outlet pipeline between the water tank and the joint of the return pipeline and the water outlet pipeline, the water outlet of the water tank is higher than the return pipeline, and the water outlet of the water tank is higher than the reverse osmosis filter element. Like this, can discharge the high pure water of TDS automatically and need not to set up more draw-out device, reduce water purification system's part, reduce water purification system's energy consumption.

Exemplarily, still be provided with the suction pump on the outlet pipeline, the suction pump is located return line with the upper reaches of outlet pipeline's junction, the suction pump is connected to automatically controlled board, automatically controlled board is in control when dissolubility solid total amount is greater than or equal to the preset threshold value the suction pump work. Like this, no matter the water tank sets up in optional position, rivers all can get into the reverse osmosis filter core, promote water purification system's overall arrangement variety.

Illustratively, the second end of the return line is connected to a water inlet of the booster pump, and the electronic control board controls the booster pump to work when the total amount of the soluble solids is greater than or equal to a preset threshold value. Therefore, the water flow can be filtered by the reverse osmosis filter element, and the concentrated water can be discharged out of the water purification system through the concentrated water outlet and the concentrated water electromagnetic valve in sequence; pure water can then enter the water tank for storage again via the pure water outlet and the water inlet of the water tank in sequence.

Exemplarily, still be provided with the suction pump on the outlet pipeline, the suction pump is connected to automatically controlled board. When a user takes water, the electric control board can control the water suction pump to work so that the pure water in the water tank is conveyed to the water outlet device.

Illustratively, the water outlet device comprises an intelligent faucet, the intelligent faucet is connected to the electric control board, the electric control board responds to an opening signal of the intelligent faucet to start the booster pump and the water pump, and the electric control board responds to a closing signal of the intelligent faucet to stop the water pump. Through setting up intelligent tap, can be when the user water intaking, open booster pump and suction pump immediately, when the user stopped the water intaking, even close the suction pump, make water purification system automatically, react rapidly, make water purification system and realization automatic control, promote user experience.

Exemplarily, still be provided with flow switch on the outlet pipeline, flow switch is located the low reaches of water quality detector, and is located return line with the low reaches of outlet pipeline's junction, flow switch is connected to automatically controlled board, flow switch is triggered when the flow of pipeline section is greater than or equal to the predetermined value at the place, automatically controlled board respond to flow switch triggered the signal of telecommunication and open booster pump and suction pump, and automatically controlled board respond to flow switch is not triggered the signal of telecommunication and close suction pump. Therefore, when the water outlet device is a mechanical faucet, the water purification system can automatically and quickly respond to the requirements of users, and the user experience is improved.

Illustratively, the water tank has a level gauge connected to the electronic control board, the level gauge being triggered when a water level within the water tank exceeds an upper limit level, the electronic control board shutting down the booster pump in response to an electrical signal that the level gauge is triggered. Therefore, the water tank can prevent the water stored in the water tank from being excessive, causing pressure rise and damaging the structure of the water tank.

Illustratively, the return pipeline is further provided with a return check valve which is communicated along the direction from the first end to the second end of the return pipeline. Therefore, the water flow can be prevented from flowing back to the water outlet pipeline and the water tank, and the quality of the pure water is reduced.

Exemplarily, the water purification system further comprises a water inlet solenoid valve, a water outlet of the water inlet solenoid valve is connected to a water inlet of the booster pump, and a second end of the return line is connected to the rear of the water inlet solenoid valve. The water inlet electromagnetic valve is arranged, so that water can be controlled to enter, and when the water purification system works, the water inlet electromagnetic valve is opened to allow water flow to pass through; when the water purification system is stopped, the water inlet electromagnetic valve is closed, and water flow is cut off.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic water circuit diagram of a water purification system according to an exemplary embodiment of the present invention; and

fig. 2 is a schematic water path diagram of a water purification system according to another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. 100', a water purification system; 200. a booster pump; 210. a water inlet electromagnetic valve; 300. a reverse osmosis filter element; 310. a water inlet check valve; 320. a concentrated water electromagnetic valve; 400. a water tank; 410. a liquid level meter; 500. a water outlet pipeline; 510. a water device; 520. a water quality detector; 530. a water pump; 540. a flow switch; 600. 600' return line; 610. a return solenoid valve; 620. a backflow check valve.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

To avoid delivering the first stage of water with a high TDS (total dissolved solids) to the user after a long period of non-water intake, the present invention provides a water purification system 100, as shown in fig. 1, wherein the arrows schematically show the flow direction of the water flow within the water purification system 100. According to the utility model discloses water purification system 100 can be applied to arbitrary suitable purifier.

The water purification system 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the water purification system 100 may include a booster pump 200, a reverse osmosis cartridge 300, and a water tank 400. The water outlet of the booster pump 200 may be connected to the water inlet of the reverse osmosis cartridge 300. The pure water outlet of the reverse osmosis cartridge 300 is connected to the water inlet of the water tank 400.

The reverse osmosis filter element is made of common materials such as cellulose nitrate, cellulose acetate and polyamide, the pore diameter of the reverse osmosis filter element is about one-ten-million (0.0001 micron) of hair, the reverse osmosis filter element can not be seen by naked eyes, bacteria and viruses are about 5000 times of the reverse osmosis filter element, therefore, only water molecules and partial mineral ions can pass through the reverse osmosis filter element, and other impurities and heavy metals are all discharged from the waste water pipe. The reverse osmosis filter element utilizes reverse osmosis to only permeate a solvent (usually water) to intercept ionic substances or small molecular substances, and uses static pressure at two sides of a membrane as a driving force to realize a membrane process for separating a liquid mixture. Has the advantages of high water quality of produced water, low operation cost, no pollution, convenient operation, reliable operation and the like.

As is known in the art, reverse osmosis cartridge 300 requires pressure to drive the water stream through reverse osmosis cartridge 300 to separate pure water from other substances in the water stream. Therefore, the booster pump 200 may be used to meet the operational requirements of the reverse osmosis cartridge 300. Since the reverse osmosis filter element 300 generates the concentrated water in a certain ratio while preparing the pure water, the reverse osmosis filter element 300 has a pure water outlet and a concentrated water outlet. The water flow is filtered by the reverse osmosis cartridge, and the concentrated water can be discharged through the concentrated water outlet, which can be connected to the water inlet of the water tank 400, and through the concentrated water solenoid valve 320.

The water tank 400 is used to store the pure water prepared by the reverse osmosis filter 300, and a user can directly take water from the water tank 400, so that the time for the user to wait for the reverse osmosis filter 300 to prepare the pure water can be reduced.

The water purification system 100 may further include a water outlet line 500, a return line 600, and an electronic control board (not shown).

One end of the water outlet pipe 500 may be connected to the water outlet of the water tank 400, and the other end may be used to connect to the water outlet device 510. The water outlet means 510 may include mechanical taps, such as a screw-type tap, a wrench-type tap, a lift-type tap, and the like. The water outlet device 510 may further include a pipeline machine. The water outlet device 510 may further include a smart faucet or the like.

A water quality detector 520 may be disposed on the water outlet line 500 for detecting TDS in the water outlet line 500. TDS, also known as total dissolved solids, indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. Higher TDS values indicate more solutes in the water. Total dissolved solids refers to the total amount of total solutes in the water, including both inorganic and organic content.

A first end of the return line 600 may be connected to the water outlet line 500 and a second end thereof may be connected to the front of the water inlet of the reverse osmosis cartridge 300. A return solenoid valve 610 may be provided on the return line 600.

In one embodiment, as shown in fig. 1, the second end of the return line 600 may be connected between the water outlet of the booster pump 200 and the water inlet of the reverse osmosis cartridge 300. In another embodiment, as shown in the water purification system 100 'of fig. 2, the second end of the return line 600' may be connected to the front of the water inlet of the booster pump 200.

An electronic control board may be connected to the water quality detector 520 and the return solenoid valve 610. The electronic control board controls the return solenoid valve 610 to be conducted when the TDS is greater than or equal to a preset threshold value.

When the user does not take water for a long time, the pure water in the water tank and the water outlet pipe 500 is contaminated by impurities such as bacteria, which results in a higher TDS of the pure water therein. The water quality detector 520 disposed in the water outlet pipeline 500 can detect the TDS of the pure water in the water outlet pipeline 500 in real time and send the detected TDS to the electronic control board. When the electric control board receives the TDS data collected by the water quality detector 520, and when the electric control board determines that the TDS is greater than or equal to a preset threshold value, the return-flow electromagnetic valve 610 is controlled to be switched on. The preset threshold may be a preset value, for example, 15, 20, etc., or may be a value obtained by adding a certain value to the basic value, for example, 10, according to the measured TDS when water is frequently taken as the basic value, and the preset threshold may be 1.5 times, that is, 15.

In the embodiment shown in fig. 1, when the electronic control board receives the signal that the TDS of the pure water collected by the water quality detector 520 at the water outlet line 500 is greater than or equal to the preset threshold, the return solenoid valve 610 is controlled to be turned on, and the water flow in the water outlet line 500 and the water tank 400 can enter the reverse osmosis filter element 300 through the return solenoid valve 610, and because the water flow is not pressurized, the water flow can sequentially pass through the concentrate outlet of the reverse osmosis filter element 300 and the concentrate solenoid valve 320 to be discharged out of the water purification system 100.

When the TDS drops below the preset threshold from greater than or equal to the preset threshold, indicating that the contaminated pure water in the outlet conduit 500 and the water tank 400 has been drained, the electronic control board can drive the booster pump 200 to store water in the water tank 400, so that the user can receive the pure water whose TDS meets the standard when the user takes water next time.

In the embodiment shown in fig. 2, when the electronic control board receives the TDS of the pure water collected by the water quality detector 520 at the water outlet pipeline 500 and is greater than or equal to the preset threshold, the return solenoid valve 610 is controlled to be turned on. The electric control board controls the booster pump 200 to work. The water flow in the water outlet line 500 and the water tank 400 may sequentially enter the reverse osmosis filter cartridge 300 through the return solenoid valve 610 and the booster pump 200, and since the water flow has been boosted, the water flow may be filtered by the reverse osmosis filter cartridge 300, and the concentrated water may sequentially be discharged out of the water purification system 100 through the concentrated water outlet and the concentrated water solenoid valve 320; pure water may then enter the water tank 400 for storage again via the pure water outlet and the water inlet of the water tank 400 in that order. With the high water flow of TDS filtered, when the electric control board receives that the TDS of the pure water collected by the water quality detector 520 at the water outlet pipeline 500 is less than a preset threshold value, the return-flow solenoid valve 610 is controlled to close. The first section of water TDS which is taken by the user meets the direct drinking water standard when the user takes water next time.

Since the booster pump 200 boosts the water flow, the return line 600' may be further provided with a return check valve 620. The backflow check valve 620 may be conductive in a direction from a first end to a second end of the backflow line 600'. Thus, the water flow can be prevented from flowing back into the water pipe 500 and the water tank 400, resulting in a drop in the quality of the pure water.

With this arrangement, it is possible to allow the user to take water for a long time without the TDS of the pure water at the water tank 400 and the water outlet means 510 being controlled. Ensure that the user can acquire the pure water that TDS accords with the standard when the next water intaking, be favorable to the user healthy.

For example, as shown in fig. 1, the water outlet of the water tank 400 may be higher than the water outlet line 500 between the water outlet of the water tank 400 and the junction of the return line 600 and the water outlet line 500, the water outlet of the water tank 400 may also be higher than the return line 600, and the water outlet of the water tank 400 may also be higher than the reverse osmosis filter element 300. When the electric control board receives that the TDS of the pure water collected by the water quality detector 520 at the water outlet pipeline 500 is greater than or equal to the preset threshold value, the return electromagnetic valve 610 is controlled to be switched on. By the action of gravity, the water in the water outlet line 500 and the water tank 400 can enter the reverse osmosis filter element 300 and is discharged out of the water purification system 100 through the concentrate outlet of the reverse osmosis filter element 300 and the concentrate solenoid valve 320 in sequence. Like this, can discharge the high pure water of TDS automatically and need not to set up more draw-out device, reduce water purification system 100's part, reduce water purification system 100's energy consumption.

In the embodiment shown in fig. 1 and 2, a suction pump 530 may be disposed on the water outlet line 500. The suction pump 530 may be connected to the electronic control board. When the user takes water, the electric control board may control the operation of the water pump 530 so that the pure water in the water tank is delivered to the water outlet device 510.

In this case, the water in the water tank 400 may be transferred to the reverse osmosis cartridge 300 through the return line 600 using the suction pump 530 when the TDS is greater than or equal to the preset threshold value. In this way, it is not necessary to dispose the water outlet of the water tank 400 at a position higher than the return line 600 and the reverse osmosis cartridge 300, so that the disposition of the components in the water purification system 100 can be more flexible.

Specifically, suction pump 530 may be located upstream of the connection of return line 600 and outlet line 500. The electronic control board controls the water suction pump 530 to operate when the TDS is greater than or equal to a preset threshold value. And controlling the water suction pump 530 to stop working when the TDS is smaller than a preset threshold value. When the electric control board receives that the TDS of the pure water collected by the water quality detector 520 at the water outlet pipeline 500 is greater than or equal to the preset threshold value, the return-flow electromagnetic valve 610 is controlled to be switched on, and the water suction pump 530 is started. The water flow in the outlet conduit 500 and the water tank 400 may enter the reverse osmosis cartridge 300 via the suction pump 530. Thus, no matter the water tank 400 is arranged at any position, water flow can enter the reverse osmosis filter element 300, and the layout diversity of the water purification system 100 is improved.

It should be noted that the suction pump 530 may be co-located with the elevated tank 400, i.e., the outlet of the tank 400 is higher than the return line 600 and the reverse osmosis cartridge 300, while the suction pump 530 is located upstream of the junction of the return line 600 and the outlet line 500, and the suction pump 530 operates when the TDS is greater than or equal to the predetermined threshold.

A liquid level meter 410 may be provided to the water tank 400 to determine whether the water tank is full, thereby determining whether to stop storing water into the water tank 400. The fluid level gauge 410 may include a float level gauge, an infrared level switch, or the like. The level gauge 410 is triggered when the water level in the water tank 400 reaches an upper level and transmits a triggered electrical signal to the electronic control board. The devices in the water purification system 100 are controlled according to the electrical signals received by the electrical control board. The working principle of the gauge is well known to the person skilled in the art and will not be described in detail.

When the water discharge device 510 is turned off, the water purification system 100 continues to produce water to store water in the water tank 400, resulting in an increase in the water level of the water tank 400. When the water level reaches the upper limit level, the electronic control board receives an electric signal that the liquid level meter 410 is triggered, and controls the booster pump 200 to be turned off, thereby stopping water storage into the water tank 400. Thus, it is possible to prevent the water stored in the water tank 400 from being excessively increased to cause a pressure increase, thereby damaging the structure of the water tank 400.

In the embodiment shown in fig. 1-2, the water outlet device 510 can be an intelligent faucet. The smart faucet may include a smart touch faucet, a smart induction faucet, a smart temperature control faucet, and the like. The smart faucet may be connected to an electronic control board. The electronic control board turns on the booster pump 200 and the suction pump 530 in response to an electrical signal that the smart faucet is triggered. The electronic control board stops the suction pump 530 in response to the closing signal of the smart faucet. Through setting up intelligent tap, can be when the user gets water, immediately open booster pump 200 and suction pump 530, when the user stopped the water intaking, even close suction pump 530, make water purification system 100 automatically, react rapidly, make water purification system 100 and 100' realize automatic control, promote user experience.

Alternatively, in the embodiment shown in fig. 1-2, the water outlet device 510 may also be a mechanical faucet. In this case, a flow switch 540 may be further disposed on the water outlet pipe 500. The flow switch 540 is used to monitor the flow of water through the outlet conduit 500. The flow switch 540 may be located downstream of the water quality detector 520 and downstream of the connection of the return line 600 and the water outlet line 500. The flow switch 540 may be activated when the flow rate in the outlet conduit 500 reaches a predetermined value. The electrical signal that the flow switch 540 is triggered may be high. Otherwise, the flow switch 540 outputs a low level. Alternatively, the electrical signal that flow switch 540 is triggered may be low. Otherwise, the flow switch 540 outputs a high level. The flow switch 540 may be connected to an electronic control board. The electronic control board turns on the booster pump 200 and the suction pump 530 in response to an electrical signal triggered by the flow switch 540. At this time, water may be supplied to the water outlet device 510. When the user closes the faucet, the electronic control board turns off suction pump 530 in response to an electrical signal that flow switch 540 is not activated. At this time, only the booster pump 200 operates to store water into the water tank 400. Therefore, when the water outlet device 510 is a mechanical faucet, the water purification system 100 'can automatically and rapidly respond to the user's needs, and the user experience is improved.

Illustratively, as shown in fig. 1-2, the water purification system 100 may further include a water inlet solenoid valve 210. The water outlet of the water inlet solenoid valve 210 may be connected to the water inlet of the booster pump 200. A second end of the return line 600 may be connected to the water inlet solenoid valve 210. The water inlet solenoid valve 210 may be connected to an electronic control board. Likewise, the electronic control board turns on the water inlet solenoid valve 210 in response to an electrical signal triggered by the flow switch 540 and/or the smart tap.

When a user takes water, the electric control board controls the water inlet solenoid valve 210 to open based on the received electric signal that the flow switch 540 is triggered or the electric signal that the intelligent faucet is opened, and water flow can enter the booster pump 200 through the water inlet solenoid valve 210. The water inlet electromagnetic valve 210 is arranged, so that water can be controlled to enter, and when the water purification system 100 works, the water inlet electromagnetic valve 210 is opened to allow water flow to pass through; when the water purification system 100 is stopped, the water inlet solenoid valve 210 is closed to cut off the water flow.

Illustratively, as shown in fig. 1-2, the water purification system 100 may further include a water inlet check valve 310 between the reverse osmosis cartridge 300 and the water tank 400. The water inlet check valve 310 may be conductive in a direction from the pure water outlet of the reverse osmosis cartridge 300 to the water inlet of the water tank 400. In this way, pure water stored in the water tank 400 does not reversely enter the reverse osmosis cartridge 300 regardless of the position of the water tank 400, ensuring a desired flow direction of the water.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. The utility model provides a water purification system, its includes booster pump (200), reverse osmosis filter core (300) and water tank (400), the delivery port of booster pump is connected to the water inlet of reverse osmosis filter core, the pure water outlet of reverse osmosis filter core is connected to the water inlet of water tank, its characterized in that, water purification system still includes:

the water outlet device comprises a water outlet pipeline (500), one end of the water outlet pipeline is connected to a water outlet of the water tank, the other end of the water outlet pipeline is used for being connected to a water outlet device (510), and a water quality detector (520) is arranged on the water outlet pipeline and used for detecting the total amount of soluble solids in the water outlet pipeline;

a first end of the return pipeline is connected to the water outlet pipeline, a second end of the return pipeline is connected to the front of the water inlet of the reverse osmosis filter element, and a return electromagnetic valve (610) is arranged on the return pipeline; and

and the electric control board is connected to the water quality detector and the backflow electromagnetic valve, and the electric control board controls the conduction of the backflow electromagnetic valve when the total amount of the soluble solids is greater than or equal to a preset threshold value.

2. The water purification system of claim 1, wherein the second end of the return line is connected between an outlet of the booster pump (200) and an inlet of the reverse osmosis cartridge (300), the electronic control board activating the booster pump when the total amount of dissolved solids falls below the preset threshold.

3. The water purification system of claim 2, wherein the water outlet of the water tank (400) is higher than the water outlet line between the water tank and the junction of the return line and the water outlet line (500), and the water outlet of the water tank is higher than the return line, and the water outlet of the water tank is higher than the reverse osmosis cartridge (300).

4. The water purification system of claim 2, wherein a water pump (530) is further disposed on the water outlet pipeline (500), the water pump is located upstream of a connection between the return pipeline and the water outlet pipeline, the water pump is connected to the electronic control board, and the electronic control board controls the water pump to operate when the total amount of the soluble solids is greater than or equal to a preset threshold value.

5. The water purification system of claim 1, wherein the second end of the return line is connected to a water inlet of the booster pump (200), and the electronic control board controls the booster pump to operate when the total amount of dissolved solids is greater than or equal to a preset threshold.

6. The water purification system of claim 1, wherein a water pump (530) is further disposed on the water outlet pipeline (500), and the water pump is connected to the electronic control board.

7. The water purification system of claim 6, wherein the water outlet device (510) comprises a smart faucet connected to the electronic control board, the electronic control board activating the booster pump (200) and the suction pump (530) in response to an on signal of the smart faucet, and the electronic control board deactivating the suction pump in response to an off signal of the smart faucet.

8. The water purification system of claim 6, wherein a flow switch (540) is further disposed on the water outlet pipeline (500), the flow switch is located downstream of the water quality detector (520) and downstream of a connection of the return pipeline and the water outlet pipeline, the flow switch is connected to the electronic control board, the flow switch is triggered when a flow rate of the pipeline section is greater than or equal to a predetermined value, the electronic control board turns on the booster pump (200) and the suction pump (530) in response to an electrical signal that the flow switch is triggered, and the electronic control board turns off the suction pump in response to an electrical signal that the flow switch is not triggered.

9. The water purification system of claim 1, wherein the water tank (400) has a level meter (410) connected to the electronic control board, the level meter being triggered when the water level in the water tank exceeds an upper limit level, the electronic control board shutting down the booster pump (200) in response to an electrical signal that the level meter is triggered.

10. The water purification system of claim 1, wherein the return line is further provided with a return check valve (620) that is open in a direction from the first end to the second end of the return line.

11. The water purification system of claim 1, further comprising a water inlet solenoid valve (210), a water outlet of the water inlet solenoid valve being connected to a water inlet of the booster pump (200), and a second end of the return line being connected to the rear of the water inlet solenoid valve.

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