CN220413089U - Reflux mutual flushing waterway system and water purifier - Google Patents

Abstract

The utility model discloses a backflow mutual flushing waterway system and a water purifier, comprising a backflow mutual flushing module, a first pure water preparation module and a second pure water preparation module, wherein the backflow mutual flushing module comprises a water inlet runner for inputting raw water, a first pure water runner provided with a first front filter element, a second pure water runner provided with a second front filter element, a waste water outlet runner and a pure water outlet runner; a backflow flushing flow channel is arranged between the purified water outlet ends of the first pre-filter element and the second pre-filter element, and the backflow flushing flow channel is used for flushing the purified water input by the first pre-filter element or the second pre-filter element. The water purification is generated after the water is filtered through the first pre-filter element or the second pre-filter element, part of the water purification flows into the first water purification flow channel or the second water purification flow channel to be further filtered into the pure water meeting the standard of drinking water in the first pure water preparation module or the second pure water preparation module, and part of the water purification flows into the second pre-filter element or the first pre-filter element through the backflow flushing flow channel to be flushed so as to clean the filter element.

Description

Reflux mutual flushing waterway system and water purifier

Technical Field

The utility model relates to the technical field of water purifying equipment, in particular to a reflux mutual flushing waterway system and a water purifier.

Background

The existing water purifier generally adopts a multistage filter element with low density to high density to filter harmful substances, realizes effective purification of water quality, and has large occupied space due to staggered waterways among the multistage filter elements, and the pipelines are connected through a large number of pipe connecting pieces, so that the risk of water leakage exists.

Furthermore, after the water purifier is used for a period of time, various harmful substances are trapped and accumulated in the filter element in the multiple filtering process, the water outlet quality can be influenced if the filter element is not replaced in time, the filter element is required to be replaced frequently by a user, the durability and the durability of the filter element are reduced, and the existing water purifier is lack of a flushing flow passage for the filter element, so that the durable use of the filter element is not facilitated.

The utility model is researched and proposed for overcoming the defects of the prior art.

Disclosure of Invention

Aiming at the problem that the existing water purifier lacks a flushing flow passage for a filter element, which is unfavorable for the durable use of the filter element, the utility model solves the technical problems by adopting the following technical scheme:

a return mutual flush waterway system, comprising:

the back flow mutual flushing module comprises a water inlet channel for inputting raw water, a first water purifying channel provided with a first preposed filter element, a second water purifying channel provided with a second preposed filter element, a waste water outlet channel and a pure water outlet channel; two ends of the water inlet flow channel are respectively communicated with the first water purifying flow channel and the second water purifying flow channel; the wastewater outlet ends of the first pre-filter element and the second pre-filter element are respectively communicated with a wastewater outlet flow channel; a backflow flushing flow channel is arranged between the purified water outlet ends of the first pre-filter element and the second pre-filter element, and is used for flushing the purified water input by the first pre-filter element or the second pre-filter element;

the first pure water preparation module comprises a third pure water flow passage and a first waste water flow passage, a first secondary filter element and a first tertiary filter element are sequentially arranged in the third pure water flow passage, and the water inlet end of the first secondary filter element is communicated with the first pure water flow passage; the third water purifying flow channel is communicated with the pure water outlet flow channel and is used for outputting pure water filtered by the first-stage filter element; the first wastewater flow channel is communicated with the wastewater outlet flow channel and is used for outputting wastewater filtered by the first-stage filter element;

the second pure water preparation module comprises a fourth pure water flow channel and a second waste water flow channel, a second-stage filter element and a second third-stage filter element are sequentially arranged in the fourth pure water flow channel, and the water inlet end of the second-stage filter element is communicated with the second pure water flow channel; the fourth water purifying flow channel is communicated with the pure water outlet flow channel and is used for outputting pure water filtered by the second three-stage filter element; the second wastewater flow passage is communicated with the wastewater outlet flow passage and is used for outputting wastewater filtered by the second-stage filter element.

By the mutual water route system that washes of backward flow, the mutual module that washes of backward flow still includes the first water purification interface that communicates in first water purification runner, communicates in the first waste water interface of waste water outlet runner, first pure water preparation module still includes the second water purification interface that communicates in third water purification runner, communicates in the second waste water interface of first waste water runner, first water purification interface corresponds with the second water purification interface and is connected, just first waste water interface corresponds with the second waste water interface and is connected for the mutual module that washes of backward flow can dismantle with first pure water preparation module and be connected.

By the mutual washing waterway system of backward flow, the mutual washing module of backward flow still includes the third water purification interface that communicates in the second water purification runner, communicates in the third waste water interface of waste water outlet runner, the second pure water preparation module still includes the fourth water purification interface that communicates in the fourth water purification runner, communicates in the fourth waste water interface of second waste water runner, the third water purification interface corresponds with the fourth water purification interface and is connected, just the third waste water interface corresponds with the fourth waste water interface and is connected for the mutual washing module of backward flow can dismantle with the second pure water preparation module and be connected.

According to the backflow mutual flushing waterway system, the two ends of the water inlet runner are respectively provided with the first water inlet valve connected with the first water purifying runner and the second water inlet valve connected with the second water purifying runner, the first water inlet valve is used for preventing raw water in the water inlet runner from flowing into the first pre-filter element, and the second water inlet valve is used for preventing raw water in the water inlet runner from flowing into the second pre-filter element.

The reflux mutual flushing waterway system is characterized in that a third wastewater flow channel is arranged between the wastewater outlet end of the first pre-filter element and the wastewater outlet flow channel, and a third water inlet valve is arranged in the third wastewater flow channel and used for preventing purified water filtered by the first pre-filter element from flowing into the wastewater outlet flow channel; a fourth wastewater flow channel is arranged between the wastewater outlet end of the second pre-filter element and the wastewater outlet flow channel, and a fourth water inlet valve is arranged between the fourth wastewater flow channels and used for preventing purified water filtered by the second pre-filter element from flowing into the wastewater outlet flow channel.

By the mutual washing waterway system of backward flow, the both ends that wash the runner backward flow are equipped with first flowmeter, second flowmeter respectively, first flowmeter communicates with the play water end of first leading filter core, second flowmeter communicates with the play water end of second leading filter core.

By the reflux mutual flushing waterway system, the wastewater outlet flow channel and the water inlet flow channel are distributed up and down.

By the above-mentioned mutual washing waterway system of backward flow, the play water end of first second level filter core is equipped with first TDS detector, the play water end of first tertiary filter core is equipped with the second TDS detector.

By the above-mentioned mutual washing waterway system of backward flow, the play water end of second level filter core is equipped with the third TDS detector, the play water end of second tertiary filter core is equipped with the fourth TDS detector.

The utility model also discloses a water purifier which comprises the reflux mutual flushing waterway system.

The beneficial effects of the utility model are as follows:

1. the reflux mutual flushing module is mainly used for carrying out preliminary filtration on raw water of an external water source, so that larger-volume impurities in the raw water are filtered by the first pre-filter element or the second pre-filter element, purified water is generated after the filtration, part of the purified water flows into the first purified water preparation module or the second purified water preparation module through the first purified water flow channel or the second purified water flow channel to be further filtered to form purified water meeting the standard of drinking water, and part of the purified water flows into the second pre-filter element or the first pre-filter element through the reflux flushing flow channel to be flushed so as to clean the filter element, so that the reflux mutual flushing module realizes the self-cleaning function of the filter element while the preparation of the purified water is met, the water purification efficiency and durability of the first pre-filter element and the second pre-filter element are improved, the loss rate of the filter element is reduced, the times of replacing the filter element by a user is reduced, and the user experience is optimized;

2. the reflux mutual flushing module is provided with the first water purifying flow channel and the second water purifying flow channel so as to output purified water, the efficiency of preparing purified water of the reflux mutual flushing waterway system is improved by arranging the first purified water preparation module and the second purified water preparation module, the multiple flow channels are respectively integrated in the main board, the first splice plate and the second splice plate, and the three modules share the wastewater outlet flow channel and the purified water outlet flow channel, so that the internal structure of the reflux mutual flushing waterway system is simplified, the installation of additional pipelines in the reflux mutual flushing waterway system is reduced, and the water leakage risk of the reflux mutual flushing waterway system is reduced;

3. in order to reduce the transverse width of the main board, the wastewater outlet flow channel and the water inlet flow channel are distributed up and down to form a double-layer waterway, so that the internal flow channel structure of the reflux mutual flushing module is simplified, the whole volume of the main board is reduced, and the assembly in the water purifier is facilitated.

The utility model will be further described with reference to the drawings and detailed description.

Drawings

FIG. 1 is a schematic diagram of the present utility model;

FIG. 2 is a second schematic diagram of the present utility model;

FIG. 3 is a schematic diagram III of the present utility model;

FIG. 4 is a schematic diagram of the present utility model;

FIG. 5 is a side view of the present utility model;

FIG. 6 is a sectional view A-A in FIG. 5 (concealing the first pure water preparing module and the second pure water preparing module);

FIG. 7 is a sectional view II A-A in FIG. 5 (concealing the first pure water preparing module and the second pure water preparing module);

FIG. 8 is a schematic view of a water path of a third purified water flow path in the first purified water preparation module according to the present utility model;

FIG. 9 is a schematic view of the waterway of the first wastewater channel in the first pure water preparing module of the present utility model.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-9, a reflux mutual flushing waterway system provided in this embodiment includes:

the back flow mutual flushing module 100, wherein the back flow mutual flushing module 100 comprises a water inlet flow passage 110 for inputting raw water, a first water purifying flow passage 120 provided with a first pre-filter element 410, a second water purifying flow passage 130 provided with a second pre-filter element 420, a wastewater outlet flow passage 140 and a pure water outlet flow passage 150; two ends of the water inlet flow channel 110 are respectively communicated with the first water purifying flow channel 120 and the second water purifying flow channel 130; the wastewater outlet ends of the first pre-filter element 410 and the second pre-filter element 420 are respectively communicated with the wastewater outlet flow channel 140; a back flow flushing flow channel 160 is arranged between the purified water outlet ends of the first pre-filter element 410 and the second pre-filter element 420, and the back flow flushing flow channel 160 is used for flushing the purified water input into the first pre-filter element 410 or the second pre-filter element 420;

in a preferred embodiment of the present utility model, as shown in fig. 1-6, the back flow mutual flushing module 100 includes a main board, a first installation position 411 and a second installation position 421 are provided at the bottom of the main board, the first installation position 411 is used for installing a first pre-filter 410, the second installation position 421 is used for installing a second pre-filter 420, the water inlet channel 110, the first water purifying channel 120, the second water purifying channel 130, the wastewater outlet channel 140, the pure water outlet channel 150 and the back flow flushing channel 160 are integrated in the main board, the water inlet channel 110 is used for inputting raw water into the first pre-filter 410 and the second pre-filter 420, after preliminary filtration by the first pre-filter 410 and the second pre-filter 420, the first water purifying channel 120 and the second water purifying channel 130 can be used for outputting purified water filtered by the first pre-filter 410 or the second pre-filter 420, and part of purified water flows into the second pre-filter 420 or the first pre-filter 410 through the back flushing channel 160 for flushing, the water is further communicated with the water outlet channel 100 in a preferred way, as shown by an arrow, the water return flow channel is shown in the water channel 100, the water flow channel is implemented in a reverse flow direction of the back flow mutual flushing module is shown in fig. 6, and the water channel is shown in the actual flow channel is shown by the water channel 100: raw water in the water inlet flow passage 110 flows into the first pre-filter element 410 for filtering, purified water filtered by the first pre-filter element 410 flows into the backflow flushing flow passage 160, wherein part of the purified water flows into the first preparation module 200 through the first purified water flow passage 120 for further filtering to prepare purified water, part of the purified water flows into the second pre-filter element 420 for flushing through the backflow flushing flow passage 160, and the flushed wastewater is discharged through the wastewater outlet flow passage 140; as shown by the dashed line in fig. 7, the arrow direction is the water flow direction, and the second waterway embodiment of the back flow mutual flushing module 100 is: raw water in the water inlet flow passage 110 can flow into the second pre-filter element 420 for filtering, purified water filtered by the second pre-filter element 420 flows into the backflow flushing flow passage 160, wherein part of the purified water flows into the second preparation module 300 through the first purified water flow passage 120 for further filtering to produce purified water, part of the purified water flows into the first pre-filter element 410 for flushing through the backflow flushing flow passage 160, and the flushed wastewater is discharged through the wastewater outlet flow passage 140.

In this embodiment, the back flow mutual flushing module 100 is mainly used for performing preliminary filtration on raw water of an external water source, so as to filter out impurities with larger volume in the raw water, generate purified water after being filtered by the first pre-filter element 410 or the second pre-filter element 420, enable part of the purified water to flow into the first purified water preparation module 200 or the second purified water preparation module 300 through the first purified water flow channel 120 or the second purified water flow channel 130 for further filtration to be made into purified water meeting the standard of drinking water, and enable part of the purified water to flow into the second pre-filter element 420 or the first pre-filter element 410 through the back flow flushing flow channel 160 for flushing so as to clean the filter element, so that the back flow mutual flushing module 100 can achieve the self-cleaning function of the filter element while meeting the preparation of the purified water, thereby improving the water purification efficiency and durability of the first pre-filter element 410 and the second pre-filter element 420, reducing the loss rate of the filter element, reducing the times of replacing the filter element by users, and optimizing the user experience.

The first pure water preparation module 200, wherein the first pure water preparation module 200 comprises a third pure water flow channel 210 and a first waste water flow channel 220, a first secondary filter element 430 and a first tertiary filter element 440 are sequentially arranged in the third pure water flow channel 210, and a water inlet end of the first secondary filter element 430 is communicated with the first pure water flow channel 120; the third water purifying flow channel 210 is communicated with the purified water outlet flow channel 150, and is used for outputting purified water filtered by the first stage filter element 440; the first wastewater flow channel 220 is communicated with the wastewater outlet flow channel 140, and is used for outputting wastewater filtered by the first-stage filter element 440;

the second pure water preparation module 300, wherein the second pure water preparation module 300 comprises a fourth pure water flow channel 310 and a second waste water flow channel 320, a second secondary filter element 450 and a second tertiary filter element 460 are sequentially arranged in the fourth pure water flow channel 310, and the water inlet end of the second secondary filter element 450 is communicated with the second pure water flow channel 130; the fourth purified water flow channel 310 is communicated with the purified water outlet flow channel 150, and is used for outputting purified water filtered by the second three-stage filter element 460; the second wastewater flow channel 320 is communicated with the wastewater outlet flow channel 140, and is used for outputting wastewater filtered by the second three-stage filter element 460.

As shown in fig. 1, 3, 8 and 9, the dashed line in fig. 8 and 9 means the water path trend, taking the first pure water preparation module as an example, in this embodiment, the first pure water preparation module 200 includes a first splice plate, a third installation position 431 and a fourth installation position 441 are provided at the bottom of the first splice plate, the third installation position 431 is used for installing the first secondary filter element 430, the fourth installation position 441 is used for installing the first tertiary filter element 440, the third water purifying flow channel 210 and the first waste water flow channel 220 are integrated in the first splice plate, the second pure water preparation module 300 includes a second splice plate, a fifth installation position 451 and a sixth installation position 461 are provided at the bottom of the second splice plate, the fifth installation position 451 is used for installing the second secondary filter element 450, the sixth installation position 461 is used for installing the second tertiary filter element 460, and the fourth water purifying flow channel 310 and the second waste water flow channel 320 are integrated in the second splice plate; the waterway implementation of the first pure water preparation module 200 is as follows: the third water purifying flow channel 210 receives purified water filtered by the first pre-filter element 410 or the second pre-filter element 420 from the first water purifying flow channel 120, inputs the purified water into the first secondary filter element 430 for secondary filtration, flows the purified water filtered by the first secondary filter element 430 into the first tertiary filter element 440 for tertiary filtration, flows the waste water filtered by the first tertiary filter element 440 into the first waste water flow channel 220 and is converged into the waste water outlet flow channel 140 for discharge, and flows the purified water filtered by the first tertiary filter element 440 into the third water purifying flow channel 210 and is converged into the pure water outlet flow channel 150 for discharge; since the second pure water preparing module 300 is similar in structure to the first pure water preparing module 200, the second pure water preparing module 300 is similar in waterway embodiment to the first pure water preparing module 200.

Because the backflow mutual flushing module 100 has the first water purifying flow channel 120 and the second water purifying flow channel 130 to output purified water, the efficiency of preparing purified water of the backflow mutual flushing waterway system is improved by arranging the first purified water preparing module 200 and the second purified water preparing module 300, the above-mentioned various flow channels are respectively integrated in the main board, the first splice plate and the second splice plate, and the three modules share the wastewater outlet flow channel 140 and the purified water outlet flow channel 150, so that the internal structure of the backflow mutual flushing waterway system is simplified, the installation of additional pipelines in the backflow mutual flushing waterway system is reduced, and the water leakage risk of the backflow mutual flushing waterway system is reduced.

Preferably, the back flow mutual flushing module 100 further includes a first water purifying interface 121 connected to the first water purifying channel 120 and a first wastewater interface 141 connected to the wastewater outlet channel 140, the first pure water preparing module 200 further includes a second water purifying interface 211 connected to the third water purifying channel 210 and a second wastewater interface 221 connected to the first wastewater channel 220, the first water purifying interface 121 is correspondingly connected to the second water purifying interface 211, and the first wastewater interface 141 is correspondingly connected to the second wastewater interface 221, so that the back flow mutual flushing module 100 is detachably connected to the first pure water preparing module 200. As shown in fig. 1 to 9, in this embodiment, the first water purifying interface 121 is on the same side as the first waste water interface 141, the second water purifying interface 211 is on the same side as the second waste water interface 221, and the second water purifying interface 211 is correspondingly matched and connected with the first water purifying interface 121 through the second water purifying interface 211 and the second waste water interface 221 are correspondingly matched and connected with the first waste water interface 141, so that the first splice plate is detachably connected with the main board, and is easy to assemble, no additional splice component is needed, the user can conveniently and automatically disassemble the first splice plate and the main board, the production cost of the backflow mutual flushing waterway system is reduced, and the number and types of filter cores are increased through quickly installing the first splice plate, so that the filtering effect of the backflow mutual flushing waterway system and the efficiency of preparing pure water are improved, and pure water meeting the drinking water standard is prepared for the user.

Preferably, the back flow mutual flushing module 100 further includes a third water purifying interface 131 connected to the second water purifying channel 130 and a third waste water interface 142 connected to the waste water outlet channel 140, the second pure water preparing module 300 further includes a fourth water purifying interface 311 connected to the fourth water purifying channel 310 and a fourth waste water interface 321 connected to the second waste water channel 320, the third water purifying interface 131 is correspondingly connected to the fourth water purifying interface 311, and the third waste water interface 142 is correspondingly connected to the fourth waste water interface 321, so that the back flow mutual flushing module 100 is detachably connected to the second pure water preparing module 300. As shown in fig. 1-9, in this embodiment, the third water purifying interface 131 is on the same side as the third water purifying interface 142, the fourth water purifying interface 311 is on the same side as the fourth water purifying interface 321, and the fourth water purifying interface 311 is correspondingly matched and connected with the third water purifying interface 131, and the fourth water purifying interface 321 is correspondingly matched and connected with the third water purifying interface 142, so that the second splice plate is detachably connected with the main board, and is easy to assemble, no additional splice component is needed, the user can conveniently and automatically disassemble the second splice plate and the main board, the production cost of the backflow mutual flushing waterway system is reduced, and the number and types of filter cores are increased by quickly installing the second splice plate, so that the filtering effect of the backflow mutual flushing waterway system and the efficiency of preparing pure water are improved, and pure water meeting the drinking water standard is prepared for the user.

Preferably, two ends of the water inlet channel 110 are respectively provided with a first water inlet valve 510 connected with the first water purifying channel 120 and a second water inlet valve 520 connected with the second water purifying channel 130, the first water inlet valve 510 is used for preventing raw water in the water inlet channel 110 from flowing into the first pre-filter element 410, and the second water inlet valve 520 is used for preventing raw water in the water inlet channel 110 from flowing into the second pre-filter element 420. As shown in fig. 1 and 2, in this embodiment, in order to increase the water inflow of the first pre-filter 410 or the second pre-filter 420 and prevent the water channel from being confused, the first water inlet valve 510 and the second water inlet valve 520 are provided, when the valve of the first water inlet valve 510 is opened and the valve of the second water inlet valve 520 is closed, the raw water is blocked from flowing into the second pre-filter 420, so that the raw water flows into the first pre-filter 410 as much as possible for preliminary filtration, and at this time, the second pre-filter 420 inputs the purified water which is preliminarily filtered by the first pre-filter 410 from the backflow flushing flow channel 160 for flushing; for another example, when the valve of the first water inlet valve 510 is closed and the valve of the second water inlet valve 520 is opened, the raw water is blocked from flowing into the first pre-filter element 410, so that the raw water flows into the second pre-filter element 420 as much as possible for preliminary filtration, and at this time, the first pre-filter element 410 inputs the purified water preliminarily filtered by the second pre-filter element 420 from the back-flow flushing flow channel 160 for flushing; through the above arrangement, the water inlet ends of the first pre-filter element 410 and the second pre-filter element 420 are separated, so that raw water in the water inlet flow channel 110 is prevented from flowing into the first pre-filter element 410 and the second pre-filter element 420 at the same time, thereby causing the confusion of waterways, increasing the initial water inflow of the first pre-filter element 410 or the second pre-filter element 420, and further improving the water purification efficiency of the pre-filter element; in addition, preferably, the first inlet valve 510 and the second inlet valve 520 are solenoid valves, which are easy to control by a user, so as to adjust the flushing and cleaning of the first pre-filter 410 and the second pre-filter 420.

Preferably, a third waste water channel 170 is disposed between the waste water outlet end of the first pre-filter element 410 and the waste water outlet channel 140, and a third water inlet valve 530 is disposed in the third waste water channel 170, for preventing the purified water filtered by the first pre-filter element 410 from flowing into the waste water outlet channel 140; a fourth wastewater flow channel 180 is arranged between the wastewater outlet end of the second pre-filter element 420 and the wastewater outlet flow channel 140, and a fourth water inlet valve 540 is arranged between the fourth wastewater flow channels 180 and used for preventing purified water filtered by the second pre-filter element 420 from flowing into the wastewater outlet flow channel 140. As shown in fig. 1 and 2, in this embodiment, in order to prevent the water channel from being confused, the third water inlet valve 530 and the fourth water inlet valve 540 are provided, when the valve of the third water inlet valve 530 is closed and the valve of the fourth water inlet valve 540 is opened, the purified water preliminarily filtered by the first pre-filter 410 cannot flow into the waste water outlet channel 140 and is lost, but flows into the reflux flushing channel 160 as much as possible; when the valve of the third water inlet valve 530 is opened and the valve of the fourth water inlet valve 540 is closed, the purified water preliminarily filtered by the second pre-filter 420 cannot flow into the waste water outlet flow passage 140 and flow into the backflow flushing flow passage 160 as much as possible; through the above arrangement, the loss of the purified water after the filtration of the first pre-filter 410 or the second pre-filter 420 is reduced, so that the purified water after the preliminary filtration enters the reflux flushing channel 160 for diversion as much as possible, thereby improving the water utilization rate and reducing the water consumption.

Preferably, a first flowmeter 550 and a second flowmeter 560 are respectively disposed at two ends of the back flushing flow channel 160, the first flowmeter 550 is communicated with the water outlet end of the first pre-filter element 410, and the second flowmeter 560 is communicated with the water outlet end of the second pre-filter element 420. As shown in fig. 1 and 2, in this embodiment, the first flowmeter 550 is configured to detect the flow of purified water flowing out from the first pre-filter 410, the second flowmeter 560 is configured to detect the flow of purified water flowing out from the second pre-filter 420, and the first flowmeter 550 and the second flowmeter 560 are configured to detect the condition of filtered water of the first pre-filter 410 and the second pre-filter 420, so as to determine whether the first pre-filter 410 and the second pre-filter 420 are blocked, so that the filtered water is not smooth, so that a user can replace the filter element that cannot be used in time, and the user experience is optimized.

Preferably, the wastewater outlet channel 140 and the water inlet channel 110 are disposed up and down. As shown in fig. 1, 3 and 5, in this embodiment, the wastewater outlet flow channel 140 and the water inlet flow channel 110 are integrated with each other in the main board, so as to reduce the lateral width of the main board, the wastewater outlet flow channel 140 and the water inlet flow channel 110 are arranged to be distributed up and down, so as to form a double-layer waterway, so as to simplify the internal flow channel structure of the back-flow mutual flushing module 100, and reduce the overall volume of the main board, thereby facilitating the assembly in the water purifier.

Preferably, the water outlet end of the first secondary filter element 430 is provided with a first TDS detector 570, and the water outlet end of the first tertiary filter element 440 is provided with a second TDS detector 580. Preferably, the water outlet end of the second stage filter 450 is provided with a third TDS detector 590, and the water outlet end of the second stage filter 460 is provided with a fourth TDS detector 600. As shown in fig. 1, in this embodiment, the first pre-filter 410 or the second pre-filter 420 preferably adopts a UF filter, the first secondary filter 430 and the second secondary filter 450 preferably adopt PPC filters, the first tertiary filter 440 and the second tertiary filter 460 preferably adopt RO ultrafiltration filters, and a multistage water filtration system is formed by the filters with different precision, so as to improve the water quality of pure water, wherein the first TDS detector 570 and the second TDS detector 580 are respectively disposed at the front end of the water inlet end of the first tertiary filter 440 and the rear end of the pure water outlet end thereof, and the third TDS detector 590 and the fourth TDS detector 600 are respectively disposed at the front end of the water inlet end of the second tertiary filter 460 and the rear end of the pure water outlet end thereof, so as to improve the water quality by comparing whether the water desalination rates of the RO filter with the water desalination rates of the front and rear ends of the first tertiary filter 440 and the second tertiary filter 460 meet the drinking water requirements.

The utility model also discloses a water purifier which comprises the reflux mutual flushing waterway system. As shown in fig. 1 to 9, in this embodiment, the back flow mutual flushing module 100 is mainly used for performing preliminary filtration on raw water of an external water source, so as to filter out impurities with larger volume in the raw water, generate purified water after being filtered by the first pre-filter element 410 or the second pre-filter element 420, enable part of the purified water to flow into the first purified water preparation module 200 or the second purified water preparation module 300 through the first purified water flow channel 120 or the second purified water flow channel 130 for further filtration to be made into purified water meeting the standard of drinking water, and enable part of the purified water to flow into the second pre-filter element 420 or the first pre-filter element 410 through the back flow flushing flow channel 160 for flushing so as to clean the filter element, so that the back flow mutual flushing module 100 can achieve the self-cleaning function of the filter element while meeting the preparation of the purified water, thereby improving the water purification efficiency and durability of the first pre-filter element 410 and the second pre-filter element 420, reducing the loss rate of the filter element, reducing the times of filter element replacement by users, and optimizing the user experience. In addition, since the backflow mutual flushing module 100 has the first water purifying flow channel 120 and the second water purifying flow channel 130 to output purified water, the efficiency of preparing purified water of the backflow mutual flushing waterway system is improved by setting the first purified water preparing module 200 and the second purified water preparing module 300, and the above-mentioned various flow channels are respectively integrated in the main board, the first splice plate and the second splice plate, and the three modules share the waste water outlet flow channel 140 and the purified water outlet flow channel 150, the internal structure of the backflow mutual flushing waterway system is simplified, the installation of additional pipes in the backflow mutual flushing waterway system is reduced, and the water leakage risk of the backflow mutual flushing waterway system is reduced.

The foregoing examples are provided to further illustrate the technical contents of the present utility model for the convenience of the reader, but are not intended to limit the embodiments of the present utility model thereto, and any technical extension or re-creation according to the present utility model is protected by the present utility model. The protection scope of the utility model is subject to the claims.

Claims (10)

1. A return mutual flush waterway system, comprising:

the back flow mutual flushing module (100), wherein the back flow mutual flushing module (100) comprises a water inlet flow channel (110) for inputting raw water, a first water purifying flow channel (120) provided with a first pre-filter element (410), a second water purifying flow channel (130) provided with a second pre-filter element (420), a wastewater outlet flow channel (140) and a pure water outlet flow channel (150); two ends of the water inlet flow channel (110) are respectively communicated with the first water purifying flow channel (120) and the second water purifying flow channel (130); the wastewater outlet ends of the first pre-filter element (410) and the second pre-filter element (420) are respectively communicated with the wastewater outlet flow channel (140); a backflow flushing flow channel (160) is arranged between the purified water outlet ends of the first pre-filter element (410) and the second pre-filter element (420), and the backflow flushing flow channel (160) is used for flushing purified water input into the first pre-filter element (410) or the second pre-filter element (420);

the device comprises a first pure water preparation module (200), wherein the first pure water preparation module (200) comprises a third pure water flow channel (210) and a first waste water flow channel (220), a first secondary filter element (430) and a first tertiary filter element (440) are sequentially arranged in the third pure water flow channel (210), and the water inlet end of the first secondary filter element (430) is communicated with the first pure water flow channel (120); the third water purifying flow channel (210) is communicated with the pure water outlet flow channel (150) and is used for outputting pure water filtered by the first-stage filter element (440); the first wastewater flow channel (220) is communicated with the wastewater outlet flow channel (140) and is used for outputting wastewater filtered by the first-stage filter element (440);

the second pure water preparation module (300), the second pure water preparation module (300) comprises a fourth pure water flow channel (310) and a second waste water flow channel (320), a second-stage filter element (450) and a second-stage filter element (460) are sequentially arranged in the fourth pure water flow channel (310), and the water inlet end of the second-stage filter element (450) is communicated with the second pure water flow channel (130); the fourth purified water flow passage (310) is communicated with the purified water outlet flow passage (150) and is used for outputting purified water filtered by the second three-stage filter element (460); the second wastewater flow channel (320) is communicated with the wastewater outlet flow channel (140) and is used for outputting wastewater filtered by the second three-stage filter element (460).

2. A return mutual flush waterway system according to claim 1, wherein: the backflow mutual flushing module (100) further comprises a first water purification interface (121) communicated with the first water purification flow channel (120) and a first wastewater interface (141) communicated with the wastewater outlet flow channel (140), the first pure water preparation module (200) further comprises a second water purification interface (211) communicated with the third water purification flow channel (210) and a second wastewater interface (221) communicated with the first wastewater flow channel (220), the first water purification interface (121) is correspondingly connected with the second water purification interface (211), and the first wastewater interface (141) is correspondingly connected with the second wastewater interface (221) so that the backflow mutual flushing module (100) is detachably connected with the first pure water preparation module (200).

3. A return mutual flush waterway system according to claim 1, wherein: the backflow mutual flushing module (100) further comprises a third water purification interface (131) communicated with the second water purification runner (130) and a third water purification interface (142) communicated with the wastewater outlet runner (140), the second pure water preparation module (300) further comprises a fourth water purification interface (311) communicated with the fourth water purification runner (310) and a fourth wastewater interface (321) communicated with the second wastewater runner (320), the third water purification interface (131) is correspondingly connected with the fourth water purification interface (311), and the third water purification interface (142) is correspondingly connected with the fourth wastewater interface (321) so that the backflow mutual flushing module (100) is detachably connected with the second pure water preparation module (300).

4. A return mutual flush waterway system according to claim 1, wherein: the two ends of the water inlet flow channel (110) are respectively provided with a first water inlet valve (510) connected with the first water purifying flow channel (120) and a second water inlet valve (520) connected with the second water purifying flow channel (130), the first water inlet valve (510) is used for preventing raw water in the water inlet flow channel (110) from flowing into the first pre-filter element (410), and the second water inlet valve (520) is used for preventing raw water in the water inlet flow channel (110) from flowing into the second pre-filter element (420).

5. A return mutual flush waterway system according to claim 1, wherein: a third wastewater flow channel (170) is arranged between the wastewater outlet end of the first pre-filter element (410) and the wastewater outlet flow channel (140), and a third water inlet valve (530) is arranged in the third wastewater flow channel (170) and is used for preventing purified water filtered by the first pre-filter element (410) from flowing into the wastewater outlet flow channel (140); a fourth wastewater flow channel (180) is arranged between the wastewater outlet end of the second pre-filter element (420) and the wastewater outlet flow channel (140), and a fourth water inlet valve (540) is arranged between the fourth wastewater flow channels (180) and used for preventing purified water filtered by the second pre-filter element (420) from flowing into the wastewater outlet flow channel (140).

6. A return mutual flush waterway system according to claim 1, wherein: the two ends of the backflow flushing flow channel (160) are respectively provided with a first flowmeter (550) and a second flowmeter (560), the first flowmeter (550) is communicated with the water outlet end of the first pre-filter element (410), and the second flowmeter (560) is communicated with the water outlet end of the second pre-filter element (420).

7. A return mutual flush waterway system according to claim 1, wherein: the wastewater outlet flow channel (140) and the water inlet flow channel (110) are distributed up and down.

8. A return mutual flush waterway system according to claim 1, wherein: the water outlet end of the first secondary filter element (430) is provided with a first TDS detector (570), and the water outlet end of the first tertiary filter element (440) is provided with a second TDS detector (580).

9. A return mutual flush waterway system according to claim 1, wherein: the water outlet end of the second-stage filter element (450) is provided with a third TDS detector (590), and the water outlet end of the second-stage filter element (460) is provided with a fourth TDS detector (600).

10. A water purifier, characterized in that: comprising a return mutual flush waterway system as claimed in any one of claims 1 to 9.