CN113493227A

CN113493227A - Device and method for adjusting water quality of purified water and water purification system

Info

Publication number: CN113493227A
Application number: CN202010271289.6A
Authority: CN
Inventors: 刘果; 刘小菡
Original assignee: Suqian Hanshu Environmental Protection Equipment Co ltd
Current assignee: Suqian Hanshu Environmental Protection Equipment Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-10-12
Anticipated expiration: 2040-04-08
Also published as: CN113493227B

Abstract

The disclosure provides a device and a method for adjusting the quality of purified water and a water purification system. This openly can realize through the device of adjusting water purification quality of water that the water purification is collected and is drunk, dense water recovery reuse, realizes a complete closed water purification treatment process of water purification system. The energy consumption is reduced, the concentrated water discharge ratio is enlarged, the concentrated water concentration polarization at the concentrated water side of the semipermeable membrane (osmotic membrane) is avoided, and the service life of the semipermeable membrane (osmotic membrane) is ensured. The active control of the concentrated water input into the original water tank is realized through the matching of the current-limiting channel component of the concentrated water tank and the concentrated water discharge switch, the passive control of the original water tank by the float valve for supplementing initial liquid after water shortage, namely, active supplementing liquid is added between the current-limiting channel component and the float valve, and the linkage relationship of the passive supplementing liquid realizes the long-term maintenance of the water quality in a set value interval, and metal ions which are easy to be absorbed by a human body are reserved to ensure the safety and the health of drinking water. Meanwhile, the device for adjusting the water quality of the purified water is effectively sterilized, and the regeneration of bacteria is inhibited.

Description

Device and method for adjusting water quality of purified water and water purification system

Technical Field

The disclosure relates to the field of water purification, in particular to a device and a method for adjusting the quality of purified water and a water purification system.

Background

In order to achieve the purpose of water saving, the recovered purified water is far larger than the discharged concentrated water, so that concentration polarization is increased, the service life of a semipermeable membrane (or a permeable membrane) is shortened, and abnormal discharge is caused.

Meanwhile, the water quality and the water temperature in each region are different, and the intervention effect is not ideal through a concentrated water discharge regulating valve. If the water hardness is high, the application effect can not be achieved by adopting low discharge. Similarly, the water quality of the purified water produced by the water purifier changes along with the change of the water source along with the environment, such as after rainy seasons; these problems all plague the use of water purification machines.

The purifier can directly purify the running water into straight drinking water, however, because the pipe-line system of purifier and all kinds of filter elements that are linked together, very easily breed the bacterium after long-term work, especially shut down for a long time, when using again, the quality of water of initial stage output is on the contrary more harmful to the drinker.

The drinking water source needs to keep trace elements which are easy to be absorbed by human bodies, although the drinking water is safe and unhealthy for a long time.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

The present disclosure is directed to an apparatus and a method for adjusting quality of purified water and a water purification system, which can solve at least one of the above-mentioned problems. The specific scheme is as follows:

according to a specific embodiment of the present disclosure, in a first aspect, the present disclosure provides an apparatus for adjusting quality of purified water, comprising:

the concentrated water tank is provided with a concentrated water level sensor;

a flow-restricting channel assembly configured as an elongated channel communicating the concentrate tank and the raw water tank, an inlet end of the flow-restricting channel assembly extending through the concentrate tank sidewall and an outlet end of the flow-restricting channel assembly extending through the raw water tank sidewall or top wall; the flow limiting channel component is used for enabling the flow of concentrated water flowing into the raw water tank from the flow limiting channel component to be smaller than or equal to the flow of concentrated water input into the concentrated water tank;

the concentrated water liquid level sensor is provided with a plurality of preset measuring positions from bottom to top in a layered manner according to the height of the connecting part of the flow limiting channel component and the inner side wall of the concentrated water tank;

the concentrated water input pipe and the concentrated water discharge pipe are respectively communicated with the concentrated water tank, and the low point position of the connecting part of the flow limiting channel assembly and the inner side wall of the concentrated water tank is higher than the high point position of the connecting part of the concentrated water discharge pipe and the inner side wall of the concentrated water tank;

the concentrated water discharge switch is arranged on a pipeline of the concentrated water discharge pipe and is used for controlling the concentrated water discharge pipe to discharge concentrated water;

the raw water tank is communicated with the initial liquid input pipe and the raw water output pipe respectively; a float valve is arranged in the raw water tank; the float valve is movably connected with the input port of the initial liquid input pipe and is used for controlling the initial liquid input pipe to input initial liquid into the raw water tank; the closing liquid level of the ball float valve is lower than the low point position of the joint of the flow limiting channel assembly and the inner side wall or the inner top wall of the raw water tank, and the lower edge of the input port of the initial liquid input pipe is higher than the lower edge of the output port of the raw water output pipe;

the raw water measurer is arranged in the raw water tank or a raw water output pipe communicated with the raw water tank;

the water purification measurer is used for acquiring a water purification total dissolved solid value;

the processor is respectively in signal connection with the raw water measurer, the purified water measurer, the concentrated water discharge switch and the concentrated water liquid level sensor; the processor is configured to: acquiring at least one or more stratified drainage thresholds; determining a preset measuring position corresponding to each layered drainage threshold; acquiring a total dissolved solid value of first raw water acquired by a raw water measurer; and when the total dissolved solid value of the first raw water meets the layered drainage threshold value, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank within a preset measurement position range corresponding to the layered drainage threshold value.

According to a second aspect, the present disclosure provides a water purification system comprising the apparatus for conditioning quality of purified water of the first aspect.

According to a third aspect, the present disclosure provides a method of adjusting quality of purified water, the method comprising the apparatus for adjusting quality of purified water according to the first aspect, comprising:

acquiring at least one or more stratified drainage thresholds;

determining a preset measuring position corresponding to each layered drainage threshold;

acquiring a total dissolved solid value of first raw water acquired by a raw water measurer;

and when the total dissolved solid value of the first raw water meets the layered drainage threshold value, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank within a preset measurement position range corresponding to the layered drainage threshold value.

Based on the disclosure of the above embodiments, it can be known that the embodiments of the present disclosure have the following beneficial effects:

the disclosure provides a device and a method for adjusting the quality of purified water and a water purification system. The raw water is output from the raw water tank through the raw water output pipe, a small part of purified water is produced by the water purification system and collected for drinking, and most of discharged concentrated water is led into the concentrated water tank for recycling; the discharged concentrated water amount is far larger than that of the collected drinking pure water, so that the concentrated water concentration polarization at the concentrated water side of a semipermeable membrane (permeable membrane) is avoided, and the problem of overlarge numerical value fluctuation after the liquid with different concentrations is fused is inhibited; the concentrated water is recycled, so that the energy consumption is reduced; the purified water produced by the water purification system is collected and drunk, and the concentrated water flowing into the raw water tank from the concentrated water tank flow-limiting channel component is less than the raw water output by the raw water tank, so that the raw water tank ball float valve sinks, the initial liquid is injected into the raw water tank from the initial liquid input pipe to supplement the vacancy, and the ball float valve is closed along with the rise of the liquid level, thereby forming a complete closed water purification treatment process of the water purification system.

The active control of the concentrated water input into the original water tank is realized through the matching of the current-limiting channel component of the concentrated water tank and the concentrated water discharge switch, the passive control of the original water tank by the float valve for supplementing initial liquid after water shortage, namely, active supplementing liquid is added between the current-limiting channel component and the float valve, and the linkage relationship of the passive supplementing liquid realizes that the water quality is maintained within a set value interval for a long time, and metal ions which are easy to be absorbed by human bodies are reserved to ensure that drinking water is safe and healthy.

Drawings

Fig. 1 is a schematic structural diagram of a device for adjusting quality of purified water according to an embodiment of the disclosure;

fig. 2 is a schematic view of a specific configuration example of a flow-limiting channel assembly of a device for adjusting quality of purified water according to an embodiment of the present disclosure;

fig. 3 is a schematic view of a second specific structure example of a flow-limiting channel assembly of a device for adjusting quality of purified water according to an embodiment of the disclosure;

fig. 4 is a third schematic view of a specific structure example of a flow-limiting channel assembly of a device for adjusting quality of purified water according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a preset measurement position of a concentrated water level sensor of a device for adjusting quality of purified water according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a blowout prevention channel of a concentrate level sensor of an apparatus for conditioning a quality of purified water according to an embodiment of the present disclosure;

fig. 7 is a flowchart of a method for adjusting quality of purified water according to an embodiment of the disclosure;

description of the reference numerals

1-a concentrated water tank, 2-a raw water tank, 3-a flow-limiting channel component, 4-a height-limiting diversion channel, 5-a concentrated water input pipe, 6-a concentrated water discharge pipe, 7-an initial liquid input pipe, and 8-a raw water output pipe;

11-a concentrated water level sensor and 12-a concentrated water low level sensor;

21-a ball float valve, 22-a raw water low level sensor, 23-a safety liquid level sensor and 24-a blowout prevention channel;

111-preset measurement position.

Detailed Description

Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, but the present disclosure is not limited thereto.

It will be understood that various modifications may be made to the embodiments disclosed herein. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.

It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

The first embodiment provided by the present disclosure, namely, the embodiment of the device for adjusting the quality of purified water.

The present embodiment will be described in detail with reference to fig. 1 to 6.

Referring to fig. 1, the present embodiment provides a device for adjusting quality of purified water, including: the device comprises a concentrated water tank 1, a flow-limiting channel component 3, a concentrated water liquid level sensor 11, a concentrated water input pipe 5, a concentrated water discharge pipe 6, a concentrated water discharge switch, a raw water tank 2, an initial liquid input pipe 7, a raw water output pipe 8, a raw water measurer, a purified water measurer, a ball float valve 21 and a processor.

The concentrated water tank 1 is provided with a plurality of concentrated water level sensors 11 therein. The concentrate tank 1 is used to temporarily store concentrate discharged from the water purification system. At present, in order to reduce the concentrated water discharge amount, the water purification system increases the concentrated water concentration polarization at the concentrated water side, thereby prolonging the service life of a semipermeable membrane (or osmotic membrane) and accelerating the attenuation, and if the concentrated water discharge amount is increased, huge waste is caused. The concentrated water is recycled and added into the water purification system again for secondary purification, so that the aim of saving water is fulfilled.

A level sensor for measuring the height of the liquid level in the vessel. There are a contact type and a non-contact type. The contact type liquid level sensor is arranged in the container and measures the liquid level when contacting with liquid. The non-contact liquid level sensor is arranged outside the container to measure the liquid level in the container.

And a flow-limiting channel assembly 3 configured as a long and narrow channel for communicating the concentrated water tank 1 and the raw water tank 2, wherein an inlet end of the flow-limiting channel assembly 3 is arranged on the side wall of the concentrated water tank 1, and an outlet end of the flow-limiting channel assembly 3 penetrates through the side wall or the top wall of the raw water tank 2.

The flow-limiting channel component 3 is used for leading the flow of the concentrated water flowing into the raw water tank 2 from the flow-limiting channel component 3 to be less than or equal to the flow of the concentrated water input into the concentrated water tank 1.

In order to more precisely control and smooth the liquid concentration variation curve, the flow-limiting channel assembly 3 in the embodiment of the present disclosure is configured as a long and narrow channel. That is, when the rich water is supplied to the rich water tank 1, the narrow and long passage continuously raises the level of the rich water in the rich water tank 1 within the output range of the restriction passage assembly 3. Thereby achieving the purpose of controlling the output quantity of the concentrated water according to the height of the liquid level of the concentrated water.

In order to ensure the flowing effect of the concentrated water from the concentrated water tank 1 to the raw water tank 2 through the flow limiting channel component 3, the low point position of the joint of the flow limiting channel component 3 and the inner side wall of the concentrated water tank 1 is higher than or equal to the low point position of the joint of the flow limiting channel component 3 and the inner side wall of the raw water tank 2.

Here, the disclosed embodiment provides a specific configuration example of two flow restricting channel assemblies 3.

In an example, as shown in fig. 2, the flow-limiting channel assembly 3 includes a first flow-guiding channel, and a vertical cross-section at a connection position of the first flow-guiding channel and a side wall of the concentrated water tank 1 is in a vertical bar shape (see fig. 2) or a vertical Y shape (see fig. 3).

In another example, referring to fig. 4, the flow restricting passage assembly 3 includes a plurality of second flow guide passages. The vertical sections of the joints of the second flow guide channels and the side wall of the concentrated water tank 1 are arranged in a bead string-shaped layered manner from bottom to top. And the low point position of the joint of each second flow guide channel and the inner side wall of the concentrated water tank 1 is higher than or equal to the low point position of the joint of the second flow guide channel and the inner side wall of the raw water tank 2. Furthermore, the vertical section of the joint of the second diversion channel and the side wall of the concentrated water tank 1 is circular or elliptical.

In order to ensure that the concentrated water tank 1 can store more concentrated water, the connection part of the flow limiting channel component 3 and the side wall of the concentrated water tank 1 is arranged at the upper part of the concentrated water tank 1.

And a spray-proof channel 24 is arranged outside the outlet end of the flow-limiting channel assembly 3. Please refer to fig. 6.

The concentrated water level sensor 11 is provided with a plurality of preset measuring positions 111 from bottom to top in a layered manner according to the height of the connecting part of the flow limiting channel component 3 and the inner side wall of the concentrated water tank 1.

For example, referring to fig. 5, three layers of preset measurement positions 111 are set, from bottom to top: a first layer preset measuring position 111, a second layer preset measuring position 111 and a third layer preset measuring position 111; the measuring position 111 is preset in the first layer at the low point position of the junction of the flow limiting channel assembly 3 and the inner side wall of the concentrated water tank 1, the measuring position 111 is preset in the third layer at the high point position of the junction of the flow limiting channel assembly 3 and the inner side wall of the concentrated water tank 1, and the measuring position 111 is preset in the second layer between the measuring position 111 is preset in the first layer and the measuring position 111 is preset in the third layer.

Optionally, the concentrated water level sensor 11 is layered from bottom to top at equal intervals according to the height of the junction between the flow-limiting channel assembly 3 and the inner side wall of the concentrated water tank 1 to form a plurality of preset measuring positions 111.

For example, continuing the above example, the second tier preset measurement location 111 is disposed at a position intermediate the first tier preset measurement location 111 and the third tier preset measurement location 111.

The concentrated water input pipe 5 and the concentrated water discharge pipe 6 are respectively communicated with the concentrated water tank 1, and the low point position of the connecting position of the flow limiting channel component 3 and the inner side wall of the concentrated water tank 1 is higher than the high point position of the connecting position of the concentrated water discharge pipe 6 and the inner side wall of the concentrated water tank 1.

In order to prevent the phenomenon of dead water in the concentrated water tank 1, the low point position of the connection part of the flow-limiting channel component 3 and the inner side wall of the concentrated water tank 1 is higher than the high point position of the connection part of the concentrated water input pipe 5 and the inner side wall of the concentrated water tank 1.

When current-limiting channel subassembly 3 set up on concentrated water tank 1 upper portion, set up concentrated water input pipe 5 in concentrated water tank 1 lower part, make the concentrated water of different concentrations in the input concentrated water tank 1 exchange the fusion fully, concentrated water concentration reduces gradually from bottom to top in the concentrated water tank of totality, avoids appearing the stagnant water phenomenon.

The concentrate discharge pipe 6 adjusts the value of Total Dissolved Solids (TDS for short) of the concentrate in the concentrate tank 1 by a discharge manner.

Therefore, the high point of the connection between the concentrated water input pipe 5 and the inner side wall of the concentrated water tank 1 is higher than the high point of the connection between the concentrated water discharge pipe 6 and the inner side wall of the concentrated water tank 1.

Further, the inlet of the concentrated water inlet pipe 5 is higher than the inner tank bottom of the concentrated water tank 1. And the discharge port of the concentrate discharge pipe 6 is provided at the bottom of the inner tank of the concentrate tank 1. The high-concentration concentrated water is beneficial to sinking, the high-concentration concentrated water floats upwards, the low-concentration concentrated water is beneficial to recycling the concentrated water in the circulation. The highly effective flowing concentrated water is not beneficial to the breeding of bacteria. Thereby enabling the rich water discharge pipe 6 to regulate all the rich water in the rich water tank 1. Meanwhile, the concentrated water tank 1 can be conveniently cleaned.

In order to avoid inputting the concentrated water and discharging the concentrated water at the same time, the newly input concentrated water is directly discharged, and the adjusting effect is not good. An input port of the concentrate input pipe 5 is provided in the concentrate tank 1 at a position away from a discharge port of the concentrate discharge pipe 6. Thereby ensuring that the concentrated water in the stock is discharged as much as possible and achieving the effect of adjustment.

And the concentrated water discharge switch is arranged on the pipeline of the concentrated water discharge pipe 6 and is used for controlling the concentrated water discharge pipe 6 to discharge concentrated water. For example, the concentrate discharge switch is a micro-circulation pump or a micro-self-priming pump.

Optionally, the bottom of the concentrated water tank 1 is further provided with a concentrated water low level sensor 12, and the concentrated water low level sensor 12 is in signal connection with the processor so as to empty the liquid in the concentrated water tank 1. For example, after the concentrate tank 1 is cleaned and the washing liquid is discharged, a purge signal is sent to the disposer so that the disposer turns off the concentrate discharge switch.

Since the inside of the concentrate tank 1 is liable to deposit contaminants, a concentrate sterilizer is provided in the concentrate tank 1 near the input port of the concentrate input pipe 5. The concentrated water sterilizer can sterilize and restrain the regeneration of bacteria in time, and stop the problem of bacteria accumulation caused by concentrated water circulation, and ensure the cleanness of the concentrated water input into the concentrated water tank 1.

And the raw water tank 2 is communicated with an initial liquid input pipe 7 and a raw water output pipe 8 respectively. The raw water stored in the raw water tank 2 is a mixed liquid of concentrated water and an initial liquid (such as tap water).

In order to ensure that the concentrated water input into the raw water tank 2 can be fully mixed with the initial liquid and then output into the water purification system. The connecting part of the flow-limiting channel component 3 and the side wall of the raw water tank 2 is arranged at the upper part of the raw water tank 2. Is beneficial to the sinking of the concentrated water.

Further, an input port of the initial liquid input pipe 7 is provided in the raw water tank 2 at a position away from an output port of the raw water output pipe 8.

Further, the output port of the raw water output pipe 8 is arranged at the bottom of the inner tank of the raw water tank 2. The input port of the initial liquid input pipe 7 is provided in the vicinity of the middle portion in the height direction in the raw water tank 2.

The initial liquid is favorably floated upwards, and the effect of fully mixing the initial liquid and the concentrated water is achieved. Meanwhile, the liquid with different concentrations is driven to be fused by high-efficiency flowing, and the breeding of raw water bacteria is effectively inhibited.

A float valve 21 is arranged in the raw water tank 2. The float valve 21 is movably connected with the input port of the initial liquid input pipe 7 and is used for controlling the initial liquid input pipe 7 to input the initial liquid into the raw water tank 2. In water purification systems, the initial liquid is usually tap water.

The closing liquid level of the float valve 21 is lower than the low point position of the connection part of the flow-limiting channel component 3 and the inner side wall or the inner top wall of the raw water tank 2, and the lower edge of the input port of the initial liquid input pipe 7 is higher than the lower edge of the output port of the raw water output pipe 8.

And a raw water measurer which is arranged in the raw water tank 2 or a raw water output pipe 8 communicated with the raw water tank 2. For example, the raw water meter is a TDS collector.

Optionally, the raw water tank 2 is further provided with a raw water low level sensor 22 at the bottom of the raw water tank, and the raw water low level sensor 22 is in signal connection with the processor. So as to empty the raw water tank 2 of liquid. For example, after the raw water tank 2 is cleaned and the washing liquid is discharged, a clear signal is sent to the disposer to turn off the raw water outlet pipe 8.

Because the raw water tank 2 is easy to deposit pollutants, a raw water sterilizer is arranged near the output port of the raw water output pipe 8 in the raw water tank 2. The raw water sterilizer can sterilize and restrain the regeneration of bacteria in time, and stop the problem of bacteria accumulation caused by raw water circulation, thereby ensuring the cleanness of the raw water in the raw water tank 2.

Optionally, in the raw water tank 2, a safety liquid level sensor 23 is arranged at the upper part of the outlet end of the flow limiting channel assembly 3, and the safety liquid level sensor 23 is in signal connection with the processor. The liquid level in the original water tank 2 is monitored at any time through the safety liquid level sensor 23, and once the liquid level in the original water tank 2 is greater than or equal to the liquid level measured by the safety liquid level sensor 23, alarm information is sent to the processor.

And the purified water measurer is arranged in the purified water output pipeline or a purified water tank communicated with the purified water output pipeline and is used for acquiring a purified water total dissolved solid value.

And the processor is respectively in signal connection with the raw water measurer, the purified water measurer, the concentrated water discharge switch and the concentrated water level sensor 11. The processor is configured to: acquiring at least one or more stratified drainage thresholds; determining a preset measurement position 111 corresponding to each layered drainage threshold; acquiring a total dissolved solid value of first raw water acquired by a raw water measurer; and when the total dissolved solids value of the first raw water meets the layered drainage threshold value, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank 1 within a preset measurement position 111 range corresponding to the layered drainage threshold value.

The preset measuring position 111 can be set at any position of the vertical section height at the connection of the flow-limiting channel assembly 3 and the side wall of the concentrate tank 1. However, in order to fully utilize the flow-limiting channel assembly 3 and regulate the discharge of the concentrated water, from bottom to top, the first layer of the preset measuring position 111 is arranged at the low point of the vertical section of the connecting part of the flow-limiting channel assembly 3 and the side wall of the concentrated water tank 1, and the last layer of the preset measuring position 111 is arranged at the high point of the vertical section of the connecting part of the flow-limiting channel assembly 3 and the side wall of the concentrated water tank 1. The purpose of the processor operation is to regulate the height of the concentrate in the concentrate tank 1 by controlling the concentrate discharge switch through the determination of the TDS value in the raw water tank 2.

The stratified water discharge threshold is a threshold for limiting the relationship between the preset measurement positions 111 so that the concentrated water is present between the corresponding preset measurement positions 111 by this relationship.

The processor works to keep the total dissolved solid value of raw water in the raw water tank 2 within an interval value so as to enable the total dissolved solid value of purified water to float up and down at the preset total dissolved solid value of purified water.

In order to avoid overflow of the concentrate water caused by the fact that the concentrate water input into the concentrate tank 1 exceeds the actual storage capacity of the concentrate tank 1. The device for adjusting the quality of the purified water further comprises a height limiting diversion channel 4, the height limiting diversion channel 4 is communicated with the concentrated water tank 1 and the original water tank 2, the inlet end of the height limiting diversion channel 4 penetrates through the side wall of the concentrated water tank 1, the outlet end of the height limiting diversion channel 4 penetrates through the side wall or the top wall of the original water tank 2, and the height limiting diversion channel 4 is used for limiting the height of the concentrated water in the concentrated water tank 1.

In order to prevent the concentrated water from continuously rising in the height-limiting diversion channel 4, the flow of the concentrated water flowing into the raw water tank 2 is greater than or equal to the flow of the concentrated water input into the concentrated water tank 1 through the height-limiting diversion channel 4 and the flow-limiting channel component 3.

Optionally, when the height-limiting diversion channel 4 outputs the concentrated water to the raw water tank 2, the concentrated water flow rate of the flow-limiting channel component 3 flowing into the raw water tank 2 accounts for 70% -90% of the concentrated water flow rate of the flow-limiting diversion channel 4 and the flow-limiting channel component 3 flowing into the raw water tank 2.

The low point position of the joint of the height-limiting diversion channel 4 and the inner side wall of the concentrated water tank 1 is higher than the high point position of the joint of the flow-limiting channel component 3 and the inner side wall of the concentrated water tank 1.

For more precise control and smooth liquid concentration change curve, the ratio of concentrated water to purified water in the water purification system is generally 2: 1 to 4: 1, or a ratio of any one of the above. For example, the ratio of concentrate to clear water is 3: 1, that is, in an ideal working state of the water purification system, the input concentrated water flow rate of the recycled concentrated water flowing into the raw water tank 2 through the flow-limiting channel assembly 3 accounts for 75% (3/4) of the output raw water flow rate of the raw water tank 2, and then the flow rate of the initial liquid supplemented to the raw water tank 2 through the ball float valve 21 accounts for 25% (1/4) of the output raw water flow rate of the raw water tank 2.

Assuming that the high point of the vertical section at the joint of the flow-limiting channel assembly 3 and the concentrated water tank 1 is a point E and the low point is a point F; when the liquid level of the concentrated water rises to the position of E point, the output flow of the concentrated water of the flow limiting channel component 3 is 90% -100% of the input flow of the concentrated water input pipe 5, namely the ratio of the flow of the concentrated water input by the original water tank 2 through the active control of the flow limiting channel component 3 to the flow of the original water output by the original water tank 2 is between: greater than or equal to 90% 3/4-67.5% and less than or equal to 100% 3/4-75%, the ratio of the flow rate of the initial liquid passively replenished through the float valve 21 to the flow rate of the raw water output from the raw water tank 2 is: less than or equal to (1-67.5%) -32.5%, and greater than or equal to (1-75%) -25%; effective control can be realized through a plurality of points between the point E and the point F, for example, the point H and the point M are additionally arranged, when the liquid level of the concentrated water rises to the point M, the output flow of the concentrated water is 30 to 40 percent of the input flow of the concentrated water, namely, the ratio of the input flow of the concentrated water actively controlled by the flow limiting channel component 3 of the raw water tank 2 to the output flow of the raw water tank 2 is between: greater than or equal to 30% 3/4-22.5% and less than or equal to 40% 3/4-30%, the ratio of the flow rate of the initial liquid passively replenished through the float valve 21 to the flow rate of the raw water output from the raw water tank 2 is: less than or equal to (1-22.5%) 77.5%, and greater than or equal to (1-30%) -70%; when the liquid level of the concentrated water rises to the point H, the output flow of the concentrated water is 60-70% of the input flow of the concentrated water, namely, the ratio of the flow of the concentrated water input by the raw water tank 2 through the active control of the flow-limiting channel component 3 to the flow of the raw water output by the raw water tank 2 is between: greater than or equal to 60 × 3/4 ═ 45%, and less than or equal to 70% × 3/4 ═ 52.5%, then the ratio of the flow of the initial liquid passively replenished through the float valve 21 to the flow of the raw water output from the raw water tank 2 is between: less than or equal to (1-45%) -55%, and greater than or equal to (1-52.5%) -47.5%; the thick water and the initial liquid are controlled to be mixed in proportion through the linkage relation of one active supplementary liquid and one passive supplementary liquid between the flow-limiting channel component 3 and the float valve 21, so that the water quality is maintained within a set value interval for a long time.

In the embodiment of the disclosure, the raw water tank 2 outputs raw water through a raw water output pipe, a water purification system produces a small part of purified water to be collected and drunk, and discharges a large part of concentrated water to be led into the concentrated water tank 1 to be recycled; the discharged concentrated water amount is far larger than that of the collected drinking pure water, so that the concentrated water concentration polarization at the concentrated water side of a semipermeable membrane (permeable membrane) is avoided, and the problem of overlarge numerical value fluctuation after the liquid with different concentrations is fused is inhibited; the concentrated water is recycled, so that the energy consumption is reduced; because the purified water produced by the water purification system is collected and drunk, the concentrated water flowing into the raw water tank 2 from the flow-limiting channel component 3 of the concentrated water tank 1 is less than the raw water output by the raw water tank 2, the float valve 21 of the raw water tank 2 sinks, the initial liquid is injected into the raw water tank 2 from the initial liquid input pipe to supplement the vacancy, and the float valve 21 is closed along with the rise of the liquid level, so that a complete closed water purification treatment process of the water purification system is formed.

The active control of the concentrated water input into the raw water tank 2 is realized through the matching of the flow-limiting channel component 3 of the concentrated water tank 1 and a concentrated water discharge switch, and the passive control of the original liquid supplemented by the float valve 21 after the raw water tank 2 is lack of water is realized, namely, the active supplementing liquid is arranged between the flow-limiting channel component 3 and the float valve 21, and the linkage relation of the passive supplementing liquid realizes the long-term maintenance of the water quality in a set value interval, and the drinking water is safe and healthy by reserving metal ions which are easy to be absorbed by human bodies.

A second embodiment, an embodiment of a water purification system, is provided for the present disclosure.

The second embodiment provided in the present disclosure is described more simply, and the relevant portions should be referred to the corresponding description of the first embodiment provided above. The embodiments described below are merely illustrative.

The present embodiment provides a water purification system comprising a device for adjusting the quality of purified water as described in the first embodiment.

The water purification system in the embodiment of the disclosure can realize the water purification collection and drinking and the concentrated water recycling through the device for adjusting the quality of the purified water, and realizes a complete closed water purification treatment process of the water purification system.

The water purification system adopting the device for adjusting the water quality of the purified water does not need to consider the harm to the water purification system caused by a tap water pipe network (for example, the impact of a water hammer on a supercharging device) and the squeal resonance caused by the irregularity of the water pressure of the pipe network and the pressure of the water purification system (for example, when the water purification system needs to dynamically adjust the discharge amount of concentrated water, the vapor-liquid pressures of two local points interact with each other to cause resonance), thereby ensuring the service life of control components in the equipment.

The energy consumption is reduced, the concentrated water discharge ratio is enlarged, the concentrated water concentration polarization at the concentrated water side is avoided, and the service life of the semipermeable membrane (osmotic membrane) is ensured. The recovered concentrated water can be degraded and recycled by the purification filter element to realize the reduction of discharge or zero discharge. Raw water in the raw water tank can improve the water yield of the water purification system in winter through a lowest temperature compensation mode, and the application of the water purification system in a severe cold environment is met.

The total dissolved solid value of the water purified in the water purifier is manually set, so that the water quality is maintained within the set value interval for a long time, and metal ions which are easy to absorb by a human body are reserved, so that the drinking water is safe and healthy.

Currently, water purification systems work for long periods of time, are very prone to bacterial growth, and are particularly shut down for long periods of time. The water purification system of the embodiment of the disclosure effectively sterilizes the device for adjusting the water quality of the purified water during working, and inhibits the regeneration of bacteria. When the water purification system is used again after being stopped for a long time or continuously used for a long time, only a small amount of disinfectant or cleaning agent needs to be put into the raw water tank 2, and the cleaning function of the device for adjusting the water quality of the purified water is turned on to realize self-circulation flushing, disinfection and sterilization.

A third embodiment provided by the present disclosure is an embodiment of a method for adjusting quality of purified water.

The third embodiment provided in the present disclosure is described more simply, and the relevant portions should be referred to the corresponding description of the first embodiment provided above. The embodiments described below are merely illustrative.

The present embodiment will be described in detail with reference to fig. 7.

In order to keep the total dissolved solid value of raw water in the raw water tank 2 within an interval value, the total dissolved solid value of purified water can float up and down at the preset total dissolved solid value of purified water. The embodiment provides a method for adjusting the quality of purified water, which is applied to the device for adjusting the quality of purified water in the first embodiment, and comprises the following steps:

step S701, at least one or more stratified drainage thresholds are obtained.

Optionally, the obtaining at least one or more stratified drainage thresholds includes the following steps:

and step S701-1, acquiring a purified water total dissolved solid value acquired by a purified water measurer.

The purified water measurer is arranged in the purified water output pipeline or a purified water tank communicated with the purified water output pipeline.

And S701-2, when the total dissolved solid value of the purified water reaches or exceeds a preset total dissolved solid value of the purified water, acquiring a second total dissolved solid value of the raw water acquired by the raw water measurer, and acquiring at least one or more layered drainage threshold values according to the number of preset measuring positions 111 of the concentrated water level sensor, the second total dissolved solid value of the raw water and a preset floating value.

And the raw water measurer is arranged in the raw water tank 2 or a raw water output pipe 8 communicated with the raw water tank 2.

Optionally, when the total dissolved solids value of purified water reaches or exceeds a preset total dissolved solids value of purified water, obtaining a total dissolved solids value of second raw water collected by the raw water measurer, including the following steps:

and S701-2-1, acquiring a second raw water total dissolved solid value of the first raw water acquisition measurer after the purified water total dissolved solid value reaches or exceeds a preset purified water total dissolved solid value.

The processor acquires the total dissolved solid value of the raw water acquisition device at regular time, and the second total dissolved solid value of the raw water is the total dissolved solid value of the raw water acquired by the processor for the first time after the total dissolved solid value of the purified water reaches or exceeds the preset total dissolved solid value of the purified water.

The total dissolved solids value of the second raw water reaches or crosses the TDS value of the raw water collected by the raw water measurer when the TDS value of the purified water produced by the water purifier reaches or crosses the preset total dissolved solids value at the first time. Namely, the concentrated water discharged after the water purification system starts to work is recycled; when the produced purified water TDS value is smaller than the preset purified water total dissolved solid value, the input amount of the concentrated water input into the raw water tank 2 is increased, so that the input amount of the initial liquid input into the raw water tank 2 is reduced in a phase-changing manner, the TDS value of the raw water in the raw water tank 2 is increased, and the TDS value of the raw water collected by the raw water measurer is the second raw water total dissolved solid value when the produced purified water TDS value reaches or exceeds the preset purified water total dissolved solid value for the first time; or when the produced purified water TDS value is larger than the preset purified water total dissolved solid value, the input quantity of the concentrated water input into the raw water tank 2 is changed by reducing the input quantity of the concentrated water input into the raw water tank 2, so that the input quantity of the initial liquid input into the raw water tank 2 is enlarged, and the TDS value of the raw water in the raw water tank 2 is reduced until the produced purified water TDS value reaches or exceeds the preset purified water total dissolved solid value in the first time, and the TDS value of the raw water collected by the raw water measurer is the second raw water total dissolved solid value at the moment. For example, the total dissolved solids value of the second raw water is: y500 ppm.

Presetting a floating value, comprising: and presetting the sum of the total dissolved solid value of the purified water and the preset floating error, or less than or equal to 20% of the total dissolved solid value of the second raw water.

The preset purified water total dissolved solid value is a reference value which is the artificially set purified water total dissolved solid value in the water purifier. For example, the total dissolved solids value of the purified water is preset as follows: z is 50 ppm.

Optionally, the preset total dissolved solids value of the clean water is less than or equal to 80 ppm.

Generally, the water quality with the preset total dissolved solid value of purified water of 40-60 ppm can better meet the requirements of human bodies in the aspects of taste and metal ions reserved in water.

For example, when the preset total dissolved solid value of the purified water is 40ppm, the threshold value of the total dissolved solid value of the purified water is 32-48 ppm according to 20% above and below the preset floating value;

when the total dissolved solid value of the preset purified water is 50ppm, presetting the threshold value of the total dissolved solid value of the purified water to be 40-60 ppm according to 20% above and below the preset floating value;

when the total dissolved solid value of the preset purified water is 60ppm, the threshold value of the total dissolved solid value of the preset purified water is 48-72 ppm according to 20% above and below the preset floating value.

As in the above example, the preset floating value of 20% is a relatively loose floating interval value, and it is not necessary to seek an excessively large interval value.

When the purified water TDS value collected by the purified water measurer reaches or exceeds a preset purified water total dissolved solid value Z value at the first time, the raw water TDS value collected by the raw water measurer is Y; the raw water in the raw water tank 2 is kept within the interval value of the up-and-down fluctuation of the Y value, so that the purified water produced by the water purifier is ensured to be within the interval value of the up-and-down fluctuation of the Z value, and the aim of reserving part of metal ions which are beneficial to health is fulfilled.

The floating error is preset for limiting the effective range of producing purified water. For example, the sum of the error value of the conductivity occurring when the TDS measurer measures the conductivity and the error value of the conductivity measured after the mixing delay of the liquids with different concentrations, the preset floating error is: s-20 ppm. The preset floating error can float up and down according to actual needs. The preset floating error may be selected based on the salt rejection of the permeable membrane. The larger the desalination rate of the permeable membrane, the larger the preset floating error, e.g., S30 ppm. The smaller the desalination rate of the permeable membrane, the smaller the preset floating error, e.g., S15 ppm.

The method comprises the following steps of obtaining at least one or more layered drainage threshold values according to the number of preset measuring positions 111 of a concentrated water level sensor, the total dissolved solids value of the second raw water and a preset floating value:

and S701-2-2, acquiring a first intermediate value according to a preset floating value.

For example, continuing the above example, the first intermediate value is M1-Z + S-50 + 20-70 ppm.

And S701-2-3, acquiring an upper limit value according to the sum of the total dissolved solid value of the second raw water and the first intermediate value.

For example, continuing the above example, the upper limit is U1-Y + M1-Y + Z + S-500 +50+ 20-570 ppm.

And S701-2-4, acquiring a lower limit value according to the absolute value of the difference between the total dissolved solid value of the second raw water and the first intermediate value.

For example, continuing the above example, the lower limit is U2-Y-M1-Y- (Y + S) -500- (50+20) -430 ppm.

And S701-2-5, acquiring a middle difference value according to the absolute value of the difference between the upper limit value and the lower limit value.

For example, continuing the above example, the lower limit is M2-U1-U2-430-140 ppm.

And S701-2-6, acquiring a threshold intermediate value according to the intermediate difference value and the number of the preset measuring positions 111.

For example, continuing the above example, the preset measurement positions 111 are respectively: a first layer preset measuring position 111, a second layer preset measuring position 111, and a last layer preset measuring position 111, the intermediate threshold value is: 500 ppm.

And S701-2-7, acquiring the layered drainage threshold according to the upper limit value, the lower limit value and the intermediate threshold value.

For example, continuing the above example, with an upper value of 570ppm, a middle threshold value of 500ppm, and a lower value of 430ppm, the stratified drainage threshold is obtained between these values as needed.

Step S702, determining the preset measurement position 111 corresponding to each drainage threshold.

The preset measuring position 111 can be set at any position of the vertical section height at the connection of the flow-limiting channel assembly 3 and the side wall of the concentrate tank 1. However, in order to fully utilize the flow-limiting channel assembly 3 and regulate the discharge of the concentrated water, from bottom to top, the first layer of the preset measuring position 111 is arranged at the low point of the vertical section at the joint of the flow-limiting channel assembly 3 and the side wall of the concentrated water tank 1, and the last layer of the preset measuring position 111 is arranged at the high point of the vertical section at the joint of the flow-limiting channel assembly 3 and the side wall of the concentrated water tank 1. The purpose of the processor operation is to regulate the height of the concentrate in the concentrate tank 1 by controlling the concentrate discharge switch through the determination of the TDS value in the raw water tank 2.

Step S703, a first raw water total dissolved solid value acquired by the raw water measurer is obtained.

Step S704, when the total dissolved solids value of the first raw water meets the stratified drainage threshold, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank 1 within the preset measurement position 111 range corresponding to the stratified drainage threshold.

The embodiment of the present disclosure controls the discharge amount of the concentrated water in the concentrated water tank 1, or the height of the liquid level of the concentrated water, for the total dissolved solid value of the raw water having different values obtained by collection. The active control of the concentrated water input into the raw water tank 2 is realized through the matching of the flow-limiting channel component 3 of the concentrated water tank 1 and a concentrated water discharge switch, and the passive control of the original liquid supplemented by the float valve 21 after the raw water tank 2 is lack of water is realized, namely, the active supplementing liquid is arranged between the flow-limiting channel component 3 and the float valve 21, and the linkage relation of the passive supplementing liquid realizes the long-term maintenance of the water quality in a set value interval, and the drinking water is safe and healthy by reserving metal ions which are easy to be absorbed by human bodies.

With respect to step S703-1 and step S704, the embodiments of the present disclosure provide four specific embodiments.

Detailed description of the preferred embodiment

And determining that the layered drainage threshold corresponding to each preset measuring position 111 from bottom to top is gradually reduced.

The tiered drainage threshold includes a first tiered drainage threshold. The first stratified drainage threshold comprises being greater than the upper limit.

For example, continuing the above example, the upper limit is 570ppm, and the first stratified drainage threshold is: greater than 570 ppm.

The method for determining the gradual reduction of the layered drainage threshold corresponding to each layer of the preset measuring position 111 from bottom to top comprises the following steps:

s703a-1, determining that the preset measuring position 111 of the first floor from bottom to top corresponds to the first layered drainage threshold.

For example, continuing with the above example, the first-tier preset measurement location 111 corresponding to the first tier drainage threshold is: greater than 570 ppm.

When the total dissolved solids value of the first raw water meets the stratified water drainage threshold value, the control of the concentrated water discharge switch enables the height of the concentrated water in the concentrated water tank 1 to be kept within a preset measurement position 111 range corresponding to the stratified water drainage threshold value, and the control method comprises the following steps:

step S704a, when the total dissolved solids of the first raw water meets the first stratified water discharge threshold, controlling the concentrated water discharge switch to maintain the level of the concentrated water in the concentrated water tank 1 above the first stratum preset measurement position 111.

For example, continuing the above example, when the first raw water has a total dissolved solids value greater than 570ppm, the height of the concentrate is maintained above the first layer predetermined measurement location 111.

Detailed description of the invention

The tiered drainage threshold includes a last tiered drainage threshold. The final stratified drainage threshold comprises being less than the lower limit.

For example, continuing with the above example, the lower limit is 430ppm and the final stratified drainage threshold is: less than 430ppm, and determining that the layered drainage threshold corresponding to the preset measurement position 111 of each layer from bottom to top is gradually reduced, wherein the method comprises the following steps:

s703b-1, determining that the last layer preset measuring position 111 from bottom to top corresponds to the last layered drainage threshold.

For example, continuing with the above example, the last tier of preset measurement locations 111 corresponding to the first tier drainage threshold is: less than 430 ppm.

step S704b, when the total dissolved solids of the first raw water meets the final stratified water discharge threshold, controlling the concentrated water discharge switch to maintain the height of the concentrated water in the concentrated water tank 1 above the final preset measurement position 111.

For example, continuing the above example, when the total dissolved solids of the first raw water is less than 430ppm, the height of the concentrate is maintained above the last preset measurement position 111.

Detailed description of the preferred embodiment

The concentrated water level sensor 11 is provided with a first layer preset measuring position 111, a second layer preset measuring position 111 and a last layer preset measuring position 111 which are arranged from bottom to top in a layered manner.

The tiered drainage thresholds include an intermediate tiered drainage threshold. The intermediate stratified drainage threshold includes: greater than or equal to the lower limit value and less than or equal to the upper limit value.

For example, continuing with the above example, the upper limit is 570ppm, the lower limit is 430ppm, and the intermediate stratified drainage threshold is: greater than or equal to the 430ppm and less than or equal to the 570 ppm.

s703c-1, determining that the second-layer preset measuring position 111 and the last-layer preset measuring position 111 correspond to the middle layered drainage threshold.

For example, continuing with the above example, the intermediate drainage thresholds corresponding to the second-tier preset measurement location 111 and the last-tier preset measurement location 111 are: greater than or equal to the 430ppm and less than or equal to the 570 ppm.

When the total dissolved solids value of the first raw water meets the stratified water discharge threshold, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank 1 within a preset measurement position 111 range corresponding to the stratified water discharge threshold includes:

step S704c, when the total dissolved solids value of the first raw water meets the intermediate stratified drainage threshold, controlling the concentrated water discharge switch to maintain the level of the concentrated water in the concentrated water tank 1 between the second preset measuring position 111 and the last preset measuring position 111.

When the first raw water total dissolved solids value is greater than or less than 430ppm and the first raw water total dissolved solids value is less than or equal to 570ppm, the height of the concentrated water is maintained between the second-layer preset measuring position 111 and the last-layer preset measuring position 111.

Detailed description of the invention

The concentrated water level sensor 11 includes: the first layer of preset measuring positions 111 and the last layer of preset measuring positions 111 are arranged from bottom to top in layers.

Alternatively, only two positions of the first-layer preset measurement position 111 and the last-layer preset measurement position 111 are provided in the rich water level sensor 11.

The tiered drainage threshold includes a first threshold and a second threshold.

The first threshold includes: is greater than the upper limit value.

For example, continuing the above example, the first threshold comprises: greater than 570 ppm.

The second threshold includes: is less than the lower limit value.

For example, continuing the above example, the second threshold comprises: less than 430 ppm.

Determining a preset measurement position 111 corresponding to a layered drainage threshold, comprising the steps of:

s703d-1, determining that the first layer preset measurement position 111 corresponds to the second threshold, and determining that the last layer preset measurement position 111 corresponds to the first threshold.

For example, continuing with the above example, the first-layer preset measurement position 111 corresponds to the second threshold value as follows: less than 430 ppm; the corresponding first threshold value of the last layer of preset measurement positions 111 is as follows: greater than 570 ppm.

step S704d, when the first raw water total dissolved solids value meets the first threshold, and when the concentrated water level in the concentrated water tank 1 exceeds the last layer of the preset measuring position 111, controlling the concentrated water discharge switch to discharge the concentrated water in the concentrated water tank 1 until the concentrated water level in the concentrated water tank 1 is lower than the first layer of the preset measuring position 111 and the raw water total dissolved solids value meets the second threshold.

For example, continuing the above example, when the first raw water total dissolved solids value is greater than 570ppm, then when the concentrate level in the concentrate tank 1 exceeds the last layer of the preset measuring position 111, the concentrate discharge switch is controlled to discharge the concentrate in the concentrate tank 1 until the concentrate level in the concentrate tank 1 is lower than the first layer of the preset measuring position 111 and the first raw water total dissolved solids value is less than 430 ppm.

Because the concentrated water can be continuously controlled to be discharged between the last layer of preset measuring position 111 and the first layer of preset measuring position 111, the concentrated water can be randomly regulated and controlled between the two positions, and the concentrated water discharge can be accurately controlled.

The above embodiments are merely exemplary embodiments of the present disclosure, which is not intended to limit the present disclosure, and the scope of the present disclosure is defined by the claims. Various modifications and equivalents of the disclosure may occur to those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents are considered to be within the scope of the disclosure.

Claims

1. A device for adjusting the quality of purified water, comprising:

the concentrated water tank is provided with a concentrated water level sensor;

2. The device for adjusting the quality of purified water according to claim 1, wherein the low point of the connection between the flow-limiting channel assembly and the inner side wall of the concentrated water tank is higher than or equal to the low point of the connection between the flow-limiting channel assembly and the inner side wall of the raw water tank.

3. The device for adjusting the quality of purified water according to claim 2, wherein the flow-limiting channel assembly comprises a first flow-guiding channel, and the vertical section of the joint of the first flow-guiding channel and the side wall of the concentrated water tank is in the shape of a vertical bar or a vertical Y.

4. The apparatus of claim 2, wherein the flow-restricting passage assembly comprises a plurality of second flow-directing passages; the vertical sections of the joints of the second flow guide channels and the side walls of the concentrated water tank are arranged in a bead string-shaped layered manner from bottom to top; and the low point position of the joint of each second flow guide channel and the inner side wall of the concentrated water tank is higher than or equal to the low point position of the joint of the second flow guide channel and the inner side wall of the raw water tank.

5. The device for adjusting the quality of purified water according to claim 4, wherein the vertical section of the joint of the second diversion channel and the side wall of the concentrated water tank is circular or elliptical.

6. The device for conditioning purified water of claim 1, wherein the junction of the restricted flow channel assembly and the side wall of the concentrate tank is disposed at the upper portion of the concentrate tank.

7. The device for conditioning purified water of claim 1, wherein the low point of the junction of the flow-restricting channel assembly and the inner side wall of the concentrate tank is higher than the high point of the junction of the concentrate input pipe and the inner side wall of the concentrate tank.

8. The device for conditioning purified water of claim 7, wherein the high point of the connection between the concentrated water inlet pipe and the inner side wall of the concentrated water tank is higher than the high point of the connection between the concentrated water outlet pipe and the inner side wall of the concentrated water tank.

9. An apparatus for conditioning purified water as claimed in claim 8, wherein the inlet of the concentrate inlet pipe is located above the base of the concentrate tank.

10. The apparatus of claim 8, wherein the discharge port of the concentrate discharge pipe is disposed at the bottom of the inner tank of the concentrate tank.

11. An apparatus for conditioning purified water as claimed in claim 8, wherein the inlet of the concentrate inlet pipe is located within the concentrate tank at a location remote from the outlet of the concentrate discharge pipe.

12. The device for adjusting the quality of purified water according to claim 1, further comprising a height-limiting diversion channel for communicating the concentrated water tank and the raw water tank, wherein the inlet end of the height-limiting diversion channel penetrates through the side wall of the concentrated water tank, the outlet end of the height-limiting diversion channel penetrates through the side wall or the top wall of the raw water tank, and the height-limiting diversion channel is used for limiting the height of the concentrated water in the concentrated water tank.

13. The device for conditioning purified water of claim 12, wherein the height-limiting diversion channel and the flow-limiting channel assembly cause the flow of concentrate into the raw water tank to be greater than or equal to the flow of concentrate into the concentrated water tank.

14. The device for conditioning purified water quality of claim 12, wherein the low point of the connection between the height-limiting diversion channel and the inner side wall of the concentrate tank is higher than the high point of the connection between the flow-limiting channel assembly and the inner side wall of the concentrate tank.

15. The apparatus of claim 1, wherein the concentrated water level sensor is layered at a plurality of predetermined measuring positions at equal intervals from bottom to top according to the height of the junction between the flow-limiting channel assembly and the inner side wall of the concentrated water tank.

16. The device for adjusting the quality of purified water according to claim 1, wherein the concentrated water tank is further provided with a concentrated water low level sensor at the bottom of the concentrated water tank, and the concentrated water low level sensor is in signal connection with the processor, so that the processor closes the concentrated water discharge switch according to a liquid level signal transmitted by the concentrated water low level sensor.

17. An apparatus for conditioning purified water as claimed in claim 1, wherein a concentrate sterilizer is provided in the concentrate tank near the input port of the concentrate input pipe.

18. The device for conditioning purified water of claim 1, wherein a spray-proof channel is provided outside the outlet end of the restricted flow channel assembly.

19. The device for conditioning purified water of claim 1, wherein the connection of the restricted flow channel assembly to the side wall of the raw water tank is provided at the upper part of the raw water tank.

20. An apparatus for conditioning purified water as claimed in claim 19, wherein the inlet of the initial liquid inlet pipe is disposed in the raw water tank at a position remote from the outlet of the raw water outlet pipe.

21. The apparatus of claim 20, wherein the outlet of the raw water outlet pipe is disposed at the bottom of the raw water tank.

22. An apparatus for conditioning purified water as claimed in claim 20, wherein the inlet of the initial liquid inlet pipe is disposed in the raw water tank near the middle of the raw water tank in the height direction.

23. The apparatus of claim 1, wherein the raw water tank further comprises a raw water low level sensor at the bottom of the raw water tank, and the raw water low level sensor is in signal connection with the processor.

24. The apparatus as claimed in claim 1, wherein a raw water sterilizer is provided in the raw water tank near the outlet of the raw water outlet pipe.

25. The device for adjusting the quality of purified water according to claim 1, wherein a safety liquid level sensor is arranged at the upper part of the outlet end of the flow limiting channel assembly in the raw water tank, and the safety liquid level sensor is in signal connection with the processor.

26. The device for adjusting the quality of purified water according to claim 13, wherein when the height-limiting diversion channel outputs concentrated water to the raw water tank, the flow of concentrated water flowing into the raw water tank from the flow-limiting channel component accounts for 70-90% of the flow of concentrated water flowing into the raw water tank from the height-limiting diversion channel and the flow-limiting channel component.

27. A water purification system comprising a device for conditioning the quality of purified water according to any one of claims 1 to 26.

28. A method of adjusting the quality of purified water, the method comprising the apparatus of any one of claims 1 to 26, comprising:

acquiring at least one or more stratified drainage thresholds;

and when the total dissolved solid value of the first raw water meets the layered drainage threshold value, controlling a concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank within a preset measurement position range corresponding to the layered drainage threshold value.

29. The method of adjusting a quality of purified water of claim 28, wherein the obtaining at least one or more stratified drainage thresholds comprises:

acquiring a purified water total dissolved solid value acquired by a purified water measurer;

and when the purified water total dissolved solid value reaches or exceeds a preset purified water total dissolved solid value, acquiring a second raw water total dissolved solid value acquired by the raw water measurer, and acquiring at least one or more layered drainage threshold values according to the preset measuring position number of the concentrated water level sensor, the second raw water total dissolved solid value and a preset floating value.

30. The method of claim 29, wherein the obtaining of the stratified water discharge threshold according to the number of the preset measurement positions of the concentrated water level sensor, the total dissolved solids of the second raw water, and a preset float value comprises:

acquiring a first intermediate value according to a preset floating value;

acquiring an upper limit value according to the sum of the total dissolved solids of the second raw water and the first intermediate value;

acquiring a lower limit value according to the absolute value of the difference between the total dissolved solids of the second raw water and the first intermediate value;

acquiring a middle difference value according to the absolute value of the difference between the upper limit value and the lower limit value;

acquiring a threshold intermediate value according to the intermediate difference value and the number of preset measuring positions;

and acquiring the layered drainage threshold value according to the upper limit value, the lower limit value and the threshold intermediate value.

31. The method of claim 30, wherein the determining the predetermined measurement location for each stratified drainage threshold comprises:

and determining that the layered drainage threshold corresponding to each preset measurement position from bottom to top is gradually reduced.

32. The method of claim 31, wherein the step of adjusting the quality of the purified water,

the tiered drainage threshold comprises a first tiered drainage threshold; the first tiered drainage threshold comprises being greater than the upper limit;

the step of determining that the layered drainage threshold corresponding to each preset measuring position from bottom to top is gradually reduced comprises the following steps:

and determining that a first preset measuring position of the bottom-up layer corresponds to the first layered drainage threshold value.

33. The method of claim 32, wherein when the total dissolved solids of the first raw water meets the stratified drainage threshold, controlling the concentrated water discharge switch to maintain the level of concentrated water in the concentrated water tank within a preset measurement position range corresponding to the stratified drainage threshold comprises:

and when the total dissolved solid value of the first raw water meets the first layered drainage threshold value, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank above a first layer preset measurement position.

34. The method of claim 31, wherein the step of adjusting the quality of the purified water,

the tiered drainage threshold comprises a last tiered drainage threshold; the final stratified drainage threshold comprises being less than the lower limit;

and determining the last layer of preset measuring positions from bottom to top corresponding to the last layered drainage threshold value.

35. The method of claim 34, wherein when the total dissolved solids of the first raw water meets the stratified drainage threshold, controlling the concentrated water discharge switch to maintain the level of concentrated water in the concentrated water tank within a preset measurement position range corresponding to the stratified drainage threshold comprises:

and when the total dissolved solid value of the first raw water meets the final layered drainage threshold value, controlling the concentrated water discharge switch to keep the height of the concentrated water in the concentrated water tank above the last layer of preset measurement position.

36. The method of claim 31, wherein the step of adjusting the quality of the purified water,

the concentrated water liquid level sensor is arranged at a first layer preset measuring position, a second layer preset measuring position and a last layer preset measuring position from bottom to top in a layered mode;

the tiered drainage thresholds include a middle tiered drainage threshold; the intermediate stratified drainage threshold includes: greater than or equal to the lower limit value and less than or equal to the upper limit value;

and determining that the second-layer preset measuring position and the last-layer preset measuring position correspond to the middle layered drainage threshold.

37. The method of claim 36, wherein when the total dissolved solids of the first raw water meets the stratified drainage threshold, controlling the concentrated water discharge switch to maintain the level of concentrated water in the concentrated water tank within a preset measurement position range corresponding to the stratified drainage threshold comprises:

and when the total dissolved solid value of the first raw water meets the intermediate layered drainage threshold value, controlling the concentrated water discharge switch to enable the height of the concentrated water in the concentrated water tank to be kept between the second-layer preset measurement position and the last-layer preset measurement position.

38. The method of claim 30, wherein the step of adjusting the quality of the purified water,

the concentrated water level sensor comprises: the first layer of preset measuring positions and the last layer of preset measuring positions are arranged from bottom to top in a layered mode;

the stratified drainage threshold comprises a first threshold and a second threshold;

the first threshold includes: greater than the upper limit;

the second threshold includes: less than the lower limit value;

the determining the preset measurement position corresponding to the layered drainage threshold value comprises:

and determining that the first layer of preset measuring position corresponds to the second threshold value, and determining that the last layer of preset measuring position corresponds to the first threshold value.

39. The method of claim 38, wherein when the total dissolved solids of the first raw water meets the stratified drainage threshold, controlling the concentrated water discharge switch to maintain the level of concentrated water in the concentrated water tank within a preset measurement position range corresponding to the stratified drainage threshold comprises:

when the total dissolved solid value of the first raw water meets the first threshold value, when the liquid level of the concentrated water in the concentrated water tank exceeds the last layer of preset measuring position, the concentrated water discharge switch is controlled to discharge the concentrated water in the concentrated water tank until the liquid level of the concentrated water in the concentrated water tank is lower than the first layer of preset measuring position and the total dissolved solid value of the raw water meets the second threshold value.

40. The method of claim 29, wherein obtaining a second raw water total dissolved solids value collected by the raw water meter when the purified water total dissolved solids value reaches or exceeds a predetermined purified water total dissolved solids value comprises:

and acquiring a second raw water total dissolved solid value of the raw water measurer acquired for the first time after the purified water total dissolved solid value reaches or exceeds a preset purified water total dissolved solid value.

41. The method of any one of claims 28 to 40, wherein the predetermined total dissolved solids value of the treated water is less than or equal to 80 ppm.

42. A method of conditioning purified water as claimed in claim 29 or claim 30 wherein the predetermined float value comprises: and presetting the sum of the total dissolved solid value of the purified water and the preset floating error, or less than or equal to 20% of the total dissolved solid value of the second raw water.