CN210133911U

CN210133911U - Device for reducing TDS (total dissolved solids) of pure water after shutdown of water purifier

Info

Publication number: CN210133911U
Application number: CN201920945293.9U
Authority: CN
Inventors: 肖卫方
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-03-10
Anticipated expiration: 2029-06-25

Abstract

The utility model provides a device for reducing pure water TDS after a water purifier is shut down, which comprises a raw water pipe, a front filter element, a water inlet electromagnetic valve and a booster pump are sequentially connected in series, and then the raw water pipe is connected with a water inlet of a reverse osmosis filter element, a pure water pipe, a pure water inlet of the reverse osmosis filter element, a first interface of a pure water three-way valve, a second interface of the pure water three-way valve, a pure water one-way valve and a pure water electromagnetic valve and then is connected with a user; the waste water pipe is sequentially connected with a waste water port of the reverse osmosis filter element, a first interface of the waste water three-way valve, a second interface of the waste water three-way valve and a waste water ratio electromagnetic valve in series and then is connected with an external drainage pipeline; the drainage tube is connected with the third interface of the pure water three-way valve and the third interface of the wastewater three-way valve after the drainage one-way valve is connected in series. The utility model is suitable for an all reverse osmosis water purifiers can effectively solve the problem that the TDS becomes high after the purifier shuts down.

Description

Device for reducing TDS (total dissolved solids) of pure water after shutdown of water purifier

Technical Field

The utility model relates to a water purification device and a method, which solve the problem that the TDS of pure water rises after the water purifier is shut down. In particular to a device for reducing the TDS of pure water after the water purifier is shut down.

Background

As water purifiers are more and more commonly used, people have more and more awareness of water quality. TDS (total dissolved solids) is commonly adopted in the water purifier industry at present when water quality is measured. The higher the TDS, the more impurities in the water, and the lower the TDS, the less impurities in the water.

The reverse osmosis water purifier adopts a reverse osmosis membrane filtration technology, and can filter impurities larger than 0.1 nanometer in water, so that the pure water TDS made by the reverse osmosis water purifier is low. The purification performance of water purifiers is often measured by merchants as pure water TDS. The operating principle of the reverse osmosis membrane is actually a liquid concentration process, after raw water is pressurized by the booster pump and flows through the surface of the reverse osmosis membrane, water molecules in the raw water can permeate to one side of the pure water pipe, and the rest impurities are intercepted in the raw water, so that the impurity content in the raw water can be correspondingly increased, the TDS value is increased, and the raw water is usually discharged as waste water.

After the purifier stopped working, the booster pump no longer pressurizes, because the impurity content of the water of reverse osmosis membrane both sides is different, produces the osmosis phenomenon, and the hydrone of pure water side is towards the raw water side infiltration, and the impurity of raw water side is then towards the pure water side infiltration, and the back has been prolonged to this kind of infiltration, and the impurity content of pure water side increases by a wide margin, and TDS risees. The water quality taken by the user is poor, and the user experience of the water purifier is influenced.

In order to solve the problem, the water purifier trade adopts a more scheme that the pure water drainage to the reverse osmosis filter core after system water is accomplished, and the purpose is when the water purifier is shut down, and the reverse osmosis membrane both sides all soak in the pure water, so do not have impurity infiltration to the pure water pipe, ensure that the TDS of pure water pipe does not rise. However, the scheme has the defect that a water storage barrel is required to store prepared pure water, otherwise, no pure water can be guided to the reverse osmosis filter element when the water purifier is stopped. And many big flux purifier do not have the water storage bucket, can't use this kind of scheme.

Therefore, another technical solution with wider application range is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a purifier reduces device of pure water TDS after shutting down to solve the problem that proposes in the above-mentioned background art, make the purifier shut down the back for a long time, still can provide the pure water of lower TDS, improve pure water quality of water.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the raw water pipe is sequentially connected in series with the prepositive filter element, the water inlet electromagnetic valve and the booster pump and then connected with the water inlet of the reverse osmosis filter element, and the pure water pipe is sequentially connected in series with the pure water port of the reverse osmosis filter element, the first interface of the pure water three-way valve, the second interface of the pure water three-way valve, the pure water one-way valve and the pure water electromagnetic valve and then connected with a user faucet; the waste water pipe is sequentially connected with a waste water port of the reverse osmosis filter element, a first interface of the waste water three-way valve, a second interface of the waste water three-way valve and a waste water ratio electromagnetic valve in series and then is connected with an external drainage pipeline; the drainage tube is connected with the third interface of the pure water three-way valve and the third interface of the wastewater three-way valve after the drainage one-way valve is connected in series.

Further, the waste water ratio electromagnetic valve is an electromagnetic valve with a function of fixing the waste water ratio and flushing. The wastewater ratio electromagnetic valve is opened to improve the discharge speed of the wastewater and is used for flushing the reverse osmosis filter element; after the waste water ratio electromagnetic valve is closed, waste water can be discharged according to a fixed waste water ratio during water purification.

Optionally, the system comprises an electric control unit, wherein the electric control unit is electrically connected with the water inlet electromagnetic valve, the pure water electromagnetic valve, the wastewater ratio electromagnetic valve and the booster pump, and the electric control unit can control the opening and closing of the water inlet electromagnetic valve, the pure water electromagnetic valve, the wastewater ratio electromagnetic valve and the booster pump.

Optionally, the waste water ratio electromagnetic valve has a delayed closing function, and the waste water ratio electromagnetic valve is opened and then automatically closed after a delay fixed time.

The utility model has the advantages that: the utility model discloses a reduce device of pure water TDS after purifier shuts down, application scope is wide, is suitable for all reverse osmosis water purifiers, can effectively reduce pure water TDS.

The utility model discloses, simple structure for the cost that the purifier can be lower improves quality of water, promotes user experience.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a device for reducing TDS of pure water after a water purifier is shut down according to the present invention;

FIG. 2 is a schematic view of the connection of an electronic control unit of the device for reducing TDS of pure water after the water purifier is shut down;

the reference numbers illustrate:

1-a front filter element; 2-water inlet electromagnetic valve; 3, a booster pump; 4-a reverse osmosis filter element; 5-pure water three-way valve; 6-pure water check valve; 7-pure water electromagnetic valve; 8-a drainage one-way valve; 9-a waste water three-way valve; 10-wastewater ratio solenoid valve; a-a raw water pipe; b-a pure water pipe; c-a waste pipe; d-a drainage tube.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1, the present invention provides a technical solution: the water purifier comprises a raw water pipe A, a pure water pipe B, a water inlet, a pure water check valve (6), a pure water electromagnetic valve (7) and a user faucet, wherein the raw water pipe A is sequentially connected in series with a preposed filter element (1), a water inlet electromagnetic valve (2) and a booster pump (3) and then is connected with a water inlet of a reverse osmosis filter element (4), and the pure water pipe B is sequentially connected in series with a pure water inlet of the reverse osmosis filter element (4), a first interface of a pure water three-way valve (5), a second interface; the waste water pipe C is sequentially connected in series with a waste water port of the reverse osmosis filter element (4), a first interface of the waste water three-way valve (9), a second interface of the waste water three-way valve (9) and the waste water ratio electromagnetic valve (10) and then is connected with an external drainage pipeline; the drainage tube D is connected with a third interface of the pure water three-way valve (5) and a third interface of the drainage one-way valve (8) in series and then connected with a wastewater three-way valve (9).

The waste water has the function of automatically closing after 18 seconds of delay compared with the electromagnetic valve (10).

The embodiment relates to a water purifying device and a method, which comprise an electric control unit, wherein the electric control unit is electrically connected with a water inlet electromagnetic valve, a pure water electromagnetic valve, a wastewater ratio electromagnetic valve and a booster pump, and can control the water inlet electromagnetic valve, the pure water electromagnetic valve, the wastewater ratio electromagnetic valve and the booster pump to be opened and closed. Please refer to the connection diagram of fig. 2.

When the water purifier is powered on and started, the electric control unit starts the water inlet electromagnetic valve, the booster pump and the wastewater ratio electromagnetic valve, raw water enters the reverse osmosis filter element through the booster pump, and after the wastewater ratio electromagnetic valve is started, the reverse osmosis filter element begins to be flushed due to the fact that the wastewater discharge speed is increased. At the moment, the water pressure of the waste water pipe is lower, because water is produced for the first time, the pure water pipe has no water pressure, and the pure water is not drained to the waste water pipe at the moment. After the washing is carried out for a fixed time (18 seconds), the electric control unit closes the wastewater ratio electromagnetic valve and opens the pure water electromagnetic valve, at the moment, the wastewater discharge speed is reduced, and the water purifier starts to produce pure water. Because the effect of booster pump, the pure water after the filtration gets into the pure water pipe, and the pressure of pure water pipe and the pressure of the waste water pipe at waste water three-way valve (9) place all rise, because the effect of drainage check valve (8), waste water can not get into the pure water pipe, and pure water TDS is lower.

At the moment, the user faucet is closed, the water inlet electromagnetic valve, the pure water electromagnetic valve, the booster pump and the wastewater ratio electromagnetic valve are closed by the water purifier electronic control unit, and the water purifier stops producing water. At this time, a large amount of raw water is still stored in the reverse osmosis filter element. When the reverse osmosis membrane is soaked in the raw water, impurities in the raw water permeate into the pure water pipe, so that the TDS of the pure water is increased. The longer the time, or the worse the quality of the raw water, the higher the TDS of the pure water.

When the user opens the tap once more, the purifier resumes system water, and automatically controlled unit opens into water solenoid valve, booster pump, waste water than the solenoid valve, and the raw water gets into the reverse osmosis filter core through the booster pump, and waste water is than the solenoid valve and opens the back, because waste water discharge velocity increases, begins to wash the reverse osmosis filter core. At this time, the water pressure of the waste water pipe is low, and the pure water pressure of the pure water pipe is high, and the pure water is discharged to the waste water pipe from the drainage pipe due to the pressure difference and finally discharged out of the water purifier. After a fixed time of flushing (18 seconds), pure water with higher TDS was drained. The automatically controlled unit closes waste water and compares the solenoid valve, opens the pure water solenoid valve, and waste water discharge velocity reduces this moment, and the purifier begins the system pure water, the pure water of the lower TDS that the user can get used.

The technical scheme of the utility model, adopt simple structure, be suitable for all reverse osmosis water purifiers, the no bucket machine also need not to increase extra cost, through the pure water exhaust mode with higher TDS, improves user's pure water quality of water.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A device for reducing pure water TDS after a water purifier is shut down is characterized in that a raw water pipe is sequentially connected in series with a front filter element, a water inlet electromagnetic valve and a booster pump and then connected with a water inlet of a reverse osmosis filter element, and a pure water pipe is sequentially connected in series with a pure water inlet of the reverse osmosis filter element, a first interface of a pure water three-way valve, a second interface of the pure water three-way valve, a pure water one-way valve and a pure water electromagnetic valve and then connected with a user faucet; the waste water pipe is sequentially connected with a waste water port of the reverse osmosis filter element, a first interface of the waste water three-way valve, a second interface of the waste water three-way valve and a waste water ratio electromagnetic valve in series and then is connected with an external drainage pipeline; the drainage tube is connected with the third interface of the pure water three-way valve and the third interface of the wastewater three-way valve after the drainage one-way valve is connected in series.

2. The device of claim 1, wherein the pure water port of the reverse osmosis filter element is connected to the first port of the pure water three-way valve.

3. The device of claim 1, wherein the waste water port of the reverse osmosis filter element is connected to a first port of a waste water three-way valve, and a second port of the waste water three-way valve is connected to a waste water ratio solenoid valve.

4. The device of claim 1, wherein a third port of the pure water three-way valve is connected in series with a drainage check valve and then connected with a third port of a wastewater three-way valve.

5. The device for reducing pure water TDS after shutdown of a water purifier as recited in claim 1, wherein the waste water ratio solenoid valve is a solenoid valve with fixed waste water ratio and flushing function.