CN215975218U

CN215975218U - Waterway system and water purifier

Info

Publication number: CN215975218U
Application number: CN202122085749.9U
Authority: CN
Inventors: 谈菲; 宾倩韵; 孙天厚; 廖榆敏
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-08
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a waterway system and a water purifier. Wherein waterway system has water source entry, pure water outlet and waste water outlet, waterway system includes filter core and check valve backward flow subassembly. The filter element is provided with a first water inlet, a first water outlet and a first wastewater water outlet, the water source inlet is communicated with the first water inlet to form a water inlet flow path, the first water outlet is communicated with the pure water outlet to form a water outlet flow path, and the first wastewater water outlet is communicated with the wastewater outlet; the one-way return valve assembly has a return water inlet and a return water outlet, the return water inlet being in communication with the water outlet flow path, the return water outlet being in communication with the water inlet flow path. According to the technical scheme, the one-way backflow valve assembly is arranged on the waterway system containing the desalination filter element, so that the TDS value of the inlet water is reduced, and the mixed water flow enters the desalination filter element again, so that the effect of improving the whole desalination rate is achieved.

Description

Waterway system and water purifier

Technical Field

The utility model relates to the technical field of water purification, in particular to a waterway system and a water purifier.

Background

The water purifier is also called water purifier and water quality purifier, and is water treatment equipment for deeply filtering and purifying water according to the use requirement of water. The core of the technology is a filtering membrane in a filter element device, and the main technology is derived from three types, namely an ultrafiltration membrane, an RO reverse osmosis membrane and a nanofiltration membrane. The water purifier can be divided into a gradually-tightening type water purifier and a self-cleaning type water purifier according to the design grade of the pipeline. The traditional water purifier is a gradually-tightened water purifier, an internal pipeline of the water purifier is provided with a filter element which is loose in front and tight in back, and the water purifier is composed of a PP melt-blown filter element, granular carbon, compressed carbon, an RO reverse osmosis membrane or an ultrafiltration membrane and post-positioned active carbon, wherein the 5 grades are sequentially connected end to end.

The water purifier has the functions of filtering floating matters, heavy metals, bacteria, viruses, residual chlorine, silt, rust, microorganisms and the like in water, and has high-precision filtering technology, the first stage of the five-stage filtering technology of the water purifier used in a family is also called a PP cotton filter element (PPF), the second stage is a granular activated carbon (UDF) filter element, the third stage is a precision compression activated Carbon (CTO) filter element, the fourth stage is a reverse osmosis membrane or an ultrafiltration membrane, and the fifth stage is rear activated carbon (small T33). The water purifier is suitable for regions with serious tap water pollution, can filter residual chlorine in the conventional tap water, and can improve the taste of the water.

The water purifier is used as household equipment for purifying drinking water and is more and more widely used in families, but along with the higher and higher requirements of users on water quality, the requirements on the functions of the water purifier are also higher and higher.

The common water purification system is a reverse osmosis water purifier, the reverse osmosis membrane generally has a desalination rate of more than 95%, while the nanofiltration membrane mostly has a desalination rate of less than 50%, and the membrane element in the market is rolled into a plurality of single reverse osmosis membranes for rolling, or a single nanofiltration membrane is made into a nanofiltration filter core which is made into a membrane with a desalination rate more consistent with that of the membrane.

At present, mineral retention in the market has different requirements for different crowds, however, the existing reverse osmosis and nanofiltration water purifiers contain reverse osmosis and/or nanofiltration filter elements, and the desalination rate is different according to different rolling modes when water quality is purified, but the effluent desalination rate of a water channel is a single value and cannot be regulated and controlled no matter which type of rolled filter element 10 is adopted.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a waterway system, and aims to solve the problem that the desalination rate of the existing water purifier is not adjustable when the water purifier purifies water.

In order to achieve the above object, the present invention provides a waterway system having a water source inlet, a pure water outlet and a wastewater outlet, the waterway system comprising:

the filter element comprises a roll mixing filter element, the roll mixing filter element is provided with a first water inlet, a first water outlet and a first wastewater outlet, the water source inlet is communicated with the first water inlet to form a water inlet flow path, the first water outlet is communicated with the pure water outlet to form a water outlet flow path, and the first wastewater outlet is communicated with the wastewater outlet;

a one-way backflow valve assembly having a backflow water inlet and a backflow water outlet, the backflow water inlet being in communication with the water outlet flow path, the backflow water outlet being in communication with the water inlet flow path.

In one embodiment, the filter element comprises a scroll filter element or a nanofiltration filter element.

In one embodiment, the amount of backflow by the one-way backflow valve assembly is adjustable.

In one embodiment, the one-way backflow valve assembly includes a backflow valve and a one-way valve, the backflow valve being in series with the one-way valve.

In one embodiment, a booster pump is disposed on the water inlet flow path.

In one embodiment, the communication between the return water outlet and the water inlet flow path is located upstream of the booster pump.

In an embodiment, the filter element further comprises a pre-filter element integrated with the co-rolling filter element or the nano-filtration filter element, the pre-filter element has a second water inlet and a second water outlet, the water source inlet is communicated with the second water inlet, and the second water outlet is communicated with the first water inlet.

In one embodiment, the booster pump is located on a flow path between the second water outlet and the first water inlet, and the flow path between the second water outlet and the booster pump is communicated with the return water outlet; and a flow path between the pure water outlet and the first water outlet is communicated with the backflow water inlet.

In one embodiment, the mixed roll filter element is provided with a first wastewater outlet, and the wastewater outlet is communicated with the first wastewater outlet.

In an embodiment, the waste water outlet is communicated with the first waste water outlet to form a waste water flow path, and a waste water valve is arranged on the waste water flow path.

In one embodiment, the roll-mixed filter element comprises at least one nanofiltration membrane and at least one reverse osmosis membrane.

In one embodiment, the reverse osmosis membrane has a salt rejection of not less than 90% and not greater than 99%, and the nanofiltration membrane has a salt rejection of not greater than 90%.

The present invention also provides a water purifier comprising a waterway system having a water source inlet, a pure water outlet, and a wastewater outlet, the waterway system comprising:

According to the technical scheme, the one-way backflow valve assembly is arranged on the water path system containing the roll mixing filter element, so that pure water filtered by the roll mixing filter element flows back to be mixed with water flow which is not filtered, the TDS value of inlet water is reduced, the mixed water flow enters the roll mixing filter element again, and the effect of improving the whole desalination rate is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of a combination of a mixed-rolling filter element inner membrane unit of a waterway system of the utility model;

FIG. 2 is a schematic structural diagram of a second embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 4 is a schematic structural diagram of a fourth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 5 is a schematic structural diagram of a fifth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 6 is a schematic structural diagram of a sixth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 7 is a schematic structural diagram of a seventh embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 8 is a schematic structural diagram of an eighth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 9 is a schematic structural diagram of a ninth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 10 is a schematic structural diagram of a tenth embodiment of a combination of mixed-rolling cartridge inner membrane units of a waterway system of the present invention;

FIG. 11 is a schematic structural diagram of an eleventh embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 12 is a schematic structural diagram of a twelfth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

FIG. 13 is a schematic structural diagram of a thirteenth embodiment of a combination of a mixed-rolling cartridge inner membrane unit of a waterway system of the present invention;

fig. 14 is a schematic structural view of a fourteenth embodiment of a combination of mixed-roll cartridge inner membrane units of a waterway system of the present invention;

fig. 15 is a schematic structural view of a fifteenth embodiment of a combination of a mixed-roll filter element inner membrane unit of a waterway system of the present invention;

fig. 16 is a schematic structural view of a sixteenth embodiment of a combination of a mixed-rolling filter element inner membrane unit of the waterway system of the present invention;

fig. 17 is a schematic structural view of a seventeenth embodiment of a combination of a mixed-rolling filter element inner membrane unit of a waterway system of the present invention;

fig. 18 is a schematic structural view of an eighteenth embodiment of a combination of mixed-roll cartridge inner membrane units of a waterway system of the present invention;

FIG. 19 is a schematic structural diagram of a nineteenth embodiment of a combination of a mixed-roll cartridge inner membrane unit of a waterway system of the present invention;

FIG. 20 is a schematic structural view of a twentieth embodiment of a combination of mixed-roll cartridge inner membrane units of a waterway system of the present invention;

FIG. 21 is a schematic structural diagram of a twenty-first embodiment of a combination of mixed-roll cartridge inner membrane units of a waterway system of the present invention;

FIG. 22 is a schematic structural view of one embodiment of the waterway system of the present invention, prior to installation of the one-way return valve assembly;

FIG. 23 is a schematic structural view of another embodiment of the waterway system of the present invention, prior to installation of the one-way return valve;

FIG. 24 is a schematic illustration of the configuration of one embodiment of the waterway system of FIG. 22 with the one-way return valve assembly installed therein;

FIG. 25 is a schematic illustration of the configuration of one embodiment of the waterway system of the present invention incorporating the one-way return valve assembly of FIG. 23;

FIG. 26 is a schematic view of the construction of the one-way return valve assembly of FIG. 24.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				101	Water source inlet	102	Pure water outlet
103	Waste water outlet	10	Filter element
				10a₁	First water inlet	10b₁	The first water outlet
10c	First wastewater outlet	10a₂	Second water inlet
				10b₂	Second water outlet	11	One-way reflux valve assembly
11a	One-way valve	11b	Return valve
				111	Backflow water inlet	112	Return outlet
12	Booster pump	60	Mix a roll filter core
				63	Reverse osmosis membrane	62	Nanofiltration membrane
61	Central tube	13	Waste water valve

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a waterway system and a purifier comprising the same.

Referring to fig. 1, the waterway system having a water source inlet 101, a pure water outlet 102 and a waste water outlet 103 includes a filter element 10 and a backflow assembly of a check valve 11 a. Wherein the cartridge 10 has a first water inlet 10a1, a first water outlet 10b1 and a first waste water outlet 10c, the water source inlet 101 and the first water inlet 10a₁A water inlet flow path is formed and communicated with the first water outlet 10b₁And a water outlet flow path is formed by communicating with the pure water outlet 102, and the first wastewater outlet 10c communicates with the wastewater outlet 103. The one-way return valve assembly 11 has a return water inlet 111 and a return water outlet 112, the return water inlet 111 communicating with the outlet flow path, and the return water outlet 112 communicating with the inlet flow path. Here, the filter cartridge 10 may be a nanofiltration filter cartridge or a mixed roll filter cartridge 60.

The reverse osmosis water purifier is mostly used in a common water purification system, the reverse osmosis membrane 63 generally has a high desalination rate of 90-99%, and the nanofiltration membrane 62 generally has a low desalination rate of 30-70%. At present, two types of membrane elements are mainly rolled in the market, wherein one type is a multi-page single reverse osmosis membrane 63 which is rolled into a membrane element with the same desalination rate as the membrane; and the other is that a plurality of pages of single nanofiltration membrane sheets 62 are rolled to form the nanofiltration filter core. The former has too high desalination rate, and although it is not easy to scale, it does not meet the requirement of users for mineral ions. The latter has low desalination rate, and although mineral ions are more reserved, the effluent is easy to scale, and the user experience effect is poor.

In one embodiment of the present application, the membrane sheets with different desalination rates are mixed and rolled to form a mixed and rolled filter element 60, so that the final finished mixed membrane reaches the required desalination rate, and the effluent can not only ensure no scaling, but also retain part of minerals. Taking the reverse osmosis membrane 63 with a desalination rate of 95% and the nanofiltration membrane 62 with a desalination rate of 50% as an example, the desalination rate of the mixed membrane after the two are mixed is between 50% and 95%, and may be, for example, 60%, 65%, 70%, 75%, 80%, etc. If the salt rejection rate is required to be increased, the occupancy rate of the reverse osmosis membrane 63 may be increased; the stock entry requires that the salt rejection rate be reduced and the occupancy of the nanofiltration membrane 62 can be increased.

The construction of the mixing roll cartridge 60 will be described in detail below.

Referring to fig. 1 to 21, in one embodiment, the mixed-volume filter element 60 includes a central pipe 61 and a filter membrane element wound around the outer circumference of the central pipe 61, and the filter membrane element includes at least one nanofiltration membrane sheet 62 and at least one reverse osmosis membrane sheet 63.

Membrane element rolling scheme as shown in fig. 1 to 21, the membrane element has a membrane sheet number including membrane sheets of two or more different salt rejection rates. When the membrane element is rolled, different membranes are placed page by page to be rolled, the placing sequence of different membranes is not limited, the membranes with low desalination rate can be placed at first, the membranes with high desalination rate can also be placed at first, and the desalination rate ranges of two membranes are as follows: the desalination rate of the high desalination rate membrane (reverse osmosis membrane is also called RO membrane) ranges from 90% to 99%, the desalination rate of the low desalination rate membrane (nanofiltration membrane) ranges from 0% to 90%, and if the membrane with the third desalination rate is used, the desalination rate ranges from 40% to 90%; finally, the whole desalination rate of the membrane element can be adjusted to 0-99%.

Generally, the membrane element with more than two pages is suitable for a mixed rolling scheme, so that the aim of adjusting the desalination rate of effluent is fulfilled:

the two pages of membrane filter cores can be subjected to one-page nanofiltration and one-page reverse osmosis for mixed rolling, and the desalination rate is adjusted; the order of placement of the two membranes is not particularly critical.

The three-page membrane filter core can be subjected to one-page nanofiltration and two-page reverse osmosis mixed rolling, or the two-page nanofiltration and the one-page reverse osmosis mixed rolling, and the desalination rate is adjusted; the order of placement of the two membranes is not particularly critical.

The four-page membrane filter core can be subjected to one-page nanofiltration and three-page reverse osmosis for mixed rolling, two-page nanofiltration and two-page reverse osmosis are performed for rolling, three-page nanofiltration and one-page reverse osmosis are performed for mixed rolling, and the desalination rate is adjusted; the order of placement of the two membranes is not particularly critical.

Five pages of membrane filter cores can be subjected to one-page nanofiltration and four-page reverse osmosis for mixed rolling; carrying out mixed rolling on the two-page nanofiltration and the three-page reverse osmosis; carrying out mixed rolling on three pages of nanofiltration and two pages of reverse osmosis; carrying out mixed rolling on four pages of nano-filtration and one page of reverse osmosis, and adjusting the desalination rate; the order of placement of the two membranes is not particularly critical.

The six-page membrane filter core can be subjected to one-page nanofiltration and five-page reverse osmosis for mixed rolling; carrying out mixed rolling on two pages of nano-filtration and four pages of reverse osmosis; carrying out mixed rolling on three-page nanofiltration and three-page reverse osmosis; carrying out mixed rolling on four-page nanofiltration and two-page reverse osmosis, carrying out mixed rolling on five-page nanofiltration and one-page reverse osmosis, and adjusting the desalination rate; the order of placement of the two membranes is not particularly critical.

The seven-page membrane filter core can be subjected to one-page nanofiltration and six-page reverse osmosis for mixed rolling; carrying out mixed rolling on two pages of nano-filtration and five pages of reverse osmosis; carrying out mixed rolling on three-page nanofiltration and four-page reverse osmosis; carrying out mixed rolling on four-page nanofiltration and three-page reverse osmosis, carrying out mixed rolling on five-page nanofiltration and two-page reverse osmosis, carrying out mixed rolling on six-page nanofiltration and one-page reverse osmosis, and adjusting the desalination rate; the order of placement of the two membranes is not particularly critical. Such an analogy is repeated.

Therefore, the effluent desalination rate of the mixed roll filter element 60 is different according to different membrane pages and proportions, and the desalination rate range is approximately 10-99%. Of course, the salt rejection rate of the roll-mixed filter element 60 is constant when the user uses the roll-mixed filter element. For example, children or juveniles, which are in growing development stage, have a high demand for mineral ions (especially calcium ions and other trace elements), and such people have a high demand for mineral ions in water quality, so the demand for salt rejection rate is low.

Adults have a low demand for mineral ions, and such people tend to be more soft (with very low mineral ion content); in addition, soft water is generally preferably used for washing water for clothes, towels, and the like in order to prevent the clothes and towels from hardening.

The elderly have severe loss of body minerals (especially calcium) and are prone to osteoporosis, and this group has a high demand for mineral ions in drinking water and therefore has a low demand for salt rejection.

The desalination rate of the mixed-rolling filter element 60 is different according to different rolling modes, but the effluent desalination rate of the water channel system is a single value, and the desalination rate cannot be adjusted, and is only the specific desalination rate of the mixed-rolling filter element 60. The desalination rates of the mixed-rolling filter elements 60 with different proportions are different according to the proportions, and the desalination rate is a certain specific value within a certain range, for example, the desalination rate of a page of reverse osmosis plus a page of nanofiltration membrane is a certain numerical value between 55% and 65% due to membrane fluctuation; the salt rejection, which is desired to be different, can be selected from the following table, for example:

TABLE 1 relationship between the number of RO pages and NF pages and the salt rejection

Number of RO pages	NF number of pages	Salt rejection
			1	1	55％-65％
2	1	65％-80％
			1	2	50％-60％
3	1	75％-85％
			2	2	55％-65％
1	3	45％-55％
			4	1	80％-90％
3	2	60％-70％

That is, if a user thinks that pure water with different salt rejection rates is obtained, the user needs to select different types of filter elements 10 according to the needs of the user.

Referring to fig. 1, in the water channel, water flows firstly enter the mixing and rolling filter element 60 through the water pump, after being filtered by the mixing and rolling filter element 60, wastewater is discharged through the wastewater valve 13, pure water is discharged to be water with a specific desalination rate, and the water flows obtained through the mixing and rolling filter elements with different combinations have different desalination rates.

Referring to fig. 2, in the water channel, raw water enters the water channel system from the water source inlet 101, after being filtered by the front filter element, rough filtered water enters the water pump from the front water outlet, after being pressurized by the water pump, enters the mixed roll filter element 60 again, after being filtered by the mixed roll filter element 60, the waste water is discharged from the waste water outlet after passing through the waste water valve 13 or the waste water plug, and pure water is provided for users.

However, as the same mixed-rolling filter element 60, the two waterway systems are obviously difficult to meet the requirements of different people at the same time. This is obviously too complicated if the requirements of different groups of people are to be met, by replacing different types of filter cartridges 10 or by equipping them with various water systems.

Although above-mentioned two kinds of waterways can not satisfy the user demand, above-mentioned mix a roll filter core 60 can regard as the filter assembly who adjusts the desalination, and its adjustable principle is through the pure water backward flow to with do not have filterable rivers to mix to reduce into the TDS value of intaking, the rivers of mixing get into once more and mix a roll filter core 60 in, thereby reach the effect that promotes whole desalination.

In order to achieve the effect of backflow, in the present embodiment, the one-way backflow valve assembly 11 plays a key role in the process of returning the filtered pure water to be mixed with the unfiltered water flow. The one-way return valve assembly 11 may be a single one-way valve 11a or a single one-way valve 11a may be connected in series with a return valve 11 b. The following description will be made by taking the salt rejection of the mixed roll filter 60 as an example of 75%.

For a single check valve 11a, the check valve 11a may have both opening and closing functions. When the one-way valve 11a is closed, the desalination rate of the water flow purified by the water path system is 75%; when the check valve 11a is opened, the water flow purified by the water circuit system may have a desalination rate higher than 75% (e.g., 78%, 80%, 82%, etc.).

Referring to fig. 26, for the case of the check valve 11a and the return valve 11b, the one-way return valve assembly 11 is capable of adjusting the amount of water output, and the amount of water return can be adjusted according to the user's requirement. For example, the size of the valve hole of the return valve 11b can be adjusted, so that the desalination rate of the effluent can be adjusted. Here, the check valve 11a may be normally open, and the amount of backflow of the entire check backflow valve assembly 11 may be controlled by the backflow valve 11 b; the check valve 11a may have two positions of opening and closing, and the amount of backflow of the check valve assembly 11 as a whole may be controlled by both the check valve 11a and the backflow valve 11 b.

In addition, the one-way return valve assembly 11 may be integrated into a whole or may be two separate components, which is not limited herein.

The filter elements 10 with different initial desalination rates are subjected to effluent desalination rate adjustment by putting the different mixed-roll filter elements 60 into a waterway system, wherein the adjustment range is +/-10%; for example, the initial desalination rate of the two-page nanofiltration five-page reverse osmosis combined filter element 10 is about 70%, and the desalination rate of 60% -80% can be adjusted in the system through the adjustment of the one-way backflow valve assembly 11.

According to the technical scheme, the one-way backflow valve assembly 11 is arranged on the waterway system containing the roll mixing filter element 60, so that pure water filtered by the roll mixing filter element 60 flows back to be mixed with water flow which is not filtered, the TDS value of the inlet water is reduced, the mixed water flow enters the roll mixing filter element 60 again, and the effect of improving the whole desalination rate is achieved.

In the above embodiment, since the tap water itself has a certain water pressure, if the water source is tap water, after the tap water enters the water channel system from the water source inlet 101, under the water pressure of the tap water, the water can completely pass through the mixing and rolling filter element 60, and part of the water filtered by the mixing and rolling filter element 60 can flow back to the upstream of the mixing and rolling filter element 60 through the one-way return valve assembly 11, and join with the water that does not pass through the mixing and rolling filter element 60, and the joined water flows are mixed and then continue to enter the mixing and rolling filter element 60 for filtering.

Considering that the mixing roll filter element 60 has a large flow resistance, even if the water pressure exists, the mixing roll filter element may cause a small resistance to the tap water, and thus the water outlet rate may be affected.

In addition, the waterway system does not necessarily have a service environment of tap water, and once the water pressure of the tap water is not available, the waterway system cannot desalinate the water flow (for example, the water source is a water tank filled with water, or a low-pressure water source).

In view of this, referring to fig. 22 to 25, in addition to the above embodiment, the water inlet flow path is provided with the booster pump 12. Here, the booster pump 12 may be disposed in various positions, for example, the booster pump 12 may be disposed upstream of the mix-roll filter 60, in which case the booster pump 12 mainly supplies positive pressure to the mix-roll filter 60 to cause water to flow through the mix-roll filter 60 by the positive pressure. The booster pump 12 may also be disposed downstream of the mixing and rolling filter element 60, and in this case, the booster pump 12 mainly provides negative pressure to the mixing and rolling filter element 60, but the negative pressure may damage the mixing and rolling filter element 60, and the service life of the mixing and rolling filter element 60 is reduced, so that in this embodiment, the booster pump 12 is preferably disposed upstream of the mixing and rolling filter element 60.

Although the booster pump 12 is disposed upstream of the mix roll filter 60, the specific location of the booster pump 12 also needs to be discussed:

(1) the booster pump 12 is disposed downstream of the communication between the return water outlet 112 and the water inlet flow path.

(2) The booster pump 12 is disposed upstream of the place where the return water outlet 112 communicates with the water inlet flow path.

For both cases, this is possible, but the effect of the two is partially different.

For (1), although the water flow filtered by the primary mixing and rolling filter element 60 and the water flow pumped by the booster pump 12 can be smoothly mixed and then enter the mixing and rolling filter element 60, since the pump pressure of the booster pump 12 is high, the water flow of the return water outlet 112 may be limited by the pressure of the booster pump 12, so that the water flow flowing out of the return water outlet 112 is insufficient (even is directly blocked by the water pressure of the booster pump 12), thereby affecting the mixing of the two water flows and further affecting the filtering effect.

For (2), because the positive pressure and the negative pressure of the pump are both relatively large, the water flow from the water source inlet 101 can enter the booster pump 12 on the one hand and the water flow from the return water outlet 112 can smoothly enter the booster pump 12 on the other hand on the upstream of the pump under the action of the negative pressure of the pump, thereby being beneficial to the mixing of the two water flows. In addition, the positive pressure of the water flow released by the booster pump 12 will cause a part of the water flow to flow back from the backflow inlet 111 to the upstream of the booster pump 12, so as to form a water flow circulation, the backflow water flow is continuous, and the mixing effect is better.

In addition, because there is a certain flow path from the upstream of the booster pump 12 to the mixing and rolling filter element 60, in the flow path, the two water flows can be fully mixed, so that the two water flows can be mixed more uniformly, and the filtering effect is better. It follows that the preferred choice is (2).

In the above embodiment, after the water enters the waterway system through the water inlet 101, the water directly enters the mixing and rolling filter element 60, and impurities, especially tap water, are generally present in the water, and are generally silt, floating materials, grease, etc., if the impurities are presentThe mass entering the hybrid filter element 60 will cause the hybrid filter element 60 to clog, thereby reducing the useful life of the hybrid filter element 60. In view of this, unlike the single mixed roll filter element 60, in the embodiment, in order to improve the filtering effect of the waterway system on the water flow, the filter element 10 further includes a front filter element integrated with the mixed roll filter element 60, and the front filter element has a second water inlet 10a₂And a second water outlet 10b₂The water source inlet 101 and the second water inlet 10a₂Communication, the second water outlet 10b₂And the first water inlet 10a₁And (4) communicating. Here, the pre-filter element may be a PP cotton filter element or an activated carbon filter element.

After the pre-filter element is added, referring to fig. 24, in the waterway system, after being filtered by the pre-filter element, coarse filtered water enters the water pump from the pre-water outlet, after being pressurized by the water pump, enters the roll-mixing filter element 60 in the filter element 10 again, and is filtered by the roll-mixing filter element 60 to obtain pure water, after the pure water is discharged, the water flow of one branch flows out from the pure water outlet 102, and the water flow of the other branch flows back to the upstream of the booster pump 12 to be used as mixed inlet water to reduce the raw water TDS, so as to adjust the desalination rate of the outlet water. The one-way return valve assembly 11 can be selectively opened or closed, and when the return valve 11b is closed, the water circuit is a common filtering water circuit system (non-adjustable); when the reflux valve 11b is opened, the pure water partly flows back to before the pump, has reduced the TDS value of raw water to reduced the TDS value of play water, improved entire system's desalination, and this valve opening switch size can be adjusted out water desalination size, if the former desalination that thoughtlessly rolls up filter core 60 of selection is 70%, then open reflux valve 11b hole variation in size, the change of its desalination is as follows:

TABLE 2 table of correspondence between backflow amount of one-way backflow valve assembly 11 and salt rejection rate

Amount of reflux	Salt rejection
		0L	71.75％
0.5L/min	77.08％
		1.0L/min	80.8％
1.5L/min	83.9％

On the basis of the above embodiment, there are various options for the location of the booster pump 12 due to the addition of the pre-filter cartridge, as discussed below:

(1) the booster pump 12 is positioned at the water source inlet 101 and the second water inlet 10a₂On the flow path therebetween.

(2) The booster pump 12 is positioned at the second water outlet 10b₂And the first water inlet 10a₁On the flow path therebetween.

For (1), since the tap water itself has a certain water pressure (in this case, tap water is taken as an example), the flow rate of the water is fast, and the booster pump 12 is placed at the water source inlet 101 and the second water inlet 10a₂The flow path therebetween does not contribute much to increase of the water pressure. Then rivers receive leading filterable resistance of filter core after leading filter core, and water pressure descends seriously, and the rivers after the water pressure descends get into again and mix a roll filter core, and hydraulic loss is more serious to probably seriously influence pure water play water rate.

In the case of (2), after the tap water enters the pre-filter element, although the water pressure is reduced, under the relay action of the booster pump 12, the water pressure can be increased, so that the water pressure before the tap water enters the pre-filter element is reached, or even exceeds the water pressure (even if the water pressure is not higher than the previous water pressure, the water pressure cannot be too low), so that when the water flow enters the mixed rolling filter element 60, the water flow still has higher water pressure, the water flow enters the mixed rolling filter element 60 more smoothly, and the flow rate of the water flow flowing out of the pure water outlet can be ensured.

That is, the booster pump 12 is located at the second water outlet 10b₂And the first water inlet 10a₁On the flow path therebetween, the second water outlet 10b₂A flow path between the booster pump 12 and the return water outlet 112 is communicated; the pure water outlet 102 and the first water outlet 10b₁The flow path therebetween communicates with the return water inlet 111.

In the above waterway system, whether to provide the waste water outlet 103 may be determined more as required. For example, in regions with good water quality, the impurities in tap water are relatively small and the mineral ions are not abundant. In this case, the waste water outlet 103 is not required, and the impurities filtered by the mixed roll filter element 60 can be retained therein, and the mixed roll filter element 60 can be replaced after the mixed roll filter element 60 is used for a certain period of time.

However, in our country, in both south and north, the impurities in the tap water, such as silt, rust, floating materials, and organic matters, are relatively high, and if the wastewater outlet 103 is not provided in the waterway system, the frequency of replacing the mixed-roll filter element 60 is high. In view of this, in the present embodiment, the waterway system further has a waste water outlet 103, the mixing-rolling filter element 60 has a first waste water outlet 10c, and the waste water outlet 103 is communicated with the first waste water outlet 10 c.

In a preferred embodiment, the waste water outlet 103 is communicated with the first waste water outlet 10c to form a waste water flow path, and a waste water valve 13 is disposed on the waste water flow path.

Here, the waste water valve 13 can be used to adjust the flow rate of the discharged waste water, so that on one hand, the internal water pressure of the mixed-rolling filter element 60 can be adjusted, and on the other hand, the flow rate of the discharged water of the mixed-rolling filter element 60 can be adjusted, that is, when the waste water valve 13 is opened, the internal water pressure of the mixed-rolling filter element 60 is reduced, the pure water discharging rate is also reduced, and when the waste water valve 13 is closed, the internal pressure of the mixed-rolling filter element 60 is increased, and the pure water discharging rate is synchronously increased. The waste valve 13 can be a solenoid valve or a waste plug.

Referring to fig. 25, in the water path system, water flows through the booster pump 12, then enters the roll-mixing filter element 60, is filtered by the roll-mixing filter element 60, one path of water is directly connected to the pure water outlet 102, and the other path of water flows back to the front of the pump to be used as mixed inlet water to reduce the TDS of raw water and adjust the desalination rate of outlet water. The one-way return valve assembly 11 can be selected to open or close, and when the return valve 11b was closed, this water route was ordinary filtration water piping system, and when the return valve 11b was opened, the partly upper reaches to the booster pump 12 that flows back of pure water to reduced the TDS value of raw water, and then reduced the TDS value of play water, improved entire system's desalination, and the valve opening switch size of this return valve 11b can adjust out water desalination size. If the selected raw mixed roll filter element 60 has a desalination rate of 70%, the sizes of the open return valves 11b are different, and the desalination rate changes as shown in table 2.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A waterway system having a source inlet and a pure water outlet, the waterway system comprising:

the filter element is provided with a first water inlet and a first water outlet, the water source inlet is communicated with the first water inlet to form a water inlet flow path, and the first water outlet is communicated with the pure water outlet to form a water outlet flow path;

2. The waterway system of claim 1, wherein the filter element comprises a scroll filter element or a nanofiltration filter element.

3. The waterway system of claim 2, wherein a return amount of the one-way return valve assembly is adjustable.

4. The waterway system of claim 3, wherein the one-way return valve assembly includes a return valve and a one-way valve, the return valve being in series with the one-way valve.

5. The waterway system of claim 4, wherein a booster pump is disposed on the inlet flow path.

6. The waterway system of claim 5, wherein the communication of the return water outlet with the inlet water flowpath is upstream of the booster pump.

7. The waterway system of claim 5, wherein the filter element further comprises a pre-filter element integrated with the shuffling filter element or nanofiltration filter element, the pre-filter element having a second inlet and a second outlet, the water source inlet in communication with the second inlet and the second outlet in communication with the first inlet.

8. The waterway system of claim 7, wherein the booster pump is positioned in a flow path between the second water outlet and the first water inlet, the flow path between the second water outlet and the booster pump being in communication with the return water outlet; and a flow path between the pure water outlet and the first water outlet is communicated with the backflow water inlet.

9. The waterway system of any of claims 2-8, wherein the filter element comprises at least one nanofiltration membrane and at least one reverse osmosis membrane.

10. The waterway system of claim 9, wherein the reverse osmosis membrane has a rejection rate of not less than 90% and not more than 99% and the nanofiltration membrane has a rejection rate of not more than 90%.

11. A water purifier comprising a waterway system according to any one of claims 1 to 10.