CN115611328A - Pipeline layout method for front-end machine seat of water purifier with front-end electric control filtering backflushing system - Google Patents

Abstract

The invention relates to the water treatment industry, in particular to the filtration of drinking water. The invention discloses a pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system. A front-end processor base with a downward filter liner butt joint water gap, an upward water passing electric control valve butt joint water gap and a water passing pipeline, a water inlet electric control valve, a backflushing water inlet electric control valve and a water outlet electric control valve are arranged; the backflushing water inlet electric control valve and the water outlet electric control valve are closed, and the forward water passing of the front filter container and the rear filter container is conducted to form a front filter channel. The water-passing electric control valve is additionally arranged; in the additionally arranged water passing electric control valve, the water inlet electric control valve is connected in series in a water inlet pipeline of the rear filter liner, the water outlet end of the water inlet electric control valve is connected with the water inlet end of the additionally arranged water outlet electric control valve, and the backflushing water inlet electric control valve is connected with the water outlet ends of the front filter liner and the rear filter liner; the water passing in the forward direction of the front filter container is controlled, the additionally arranged backflushing water inlet electric control valve and the additionally arranged water outlet electric control valve are conducted, and the water inlet electric control valve is closed to form a filtering backflushing channel for passing the water in the forward direction of the front filter container but passing the water in the reverse direction of the rear filter container.

Description

Pipeline layout method for front-end machine seat of water purifier with front-end electric control filtering backflushing system

Prior application title: pipeline layout method for front-mounted machine seat of water purifier with front-mounted electric control filtering back-flushing system

Prior application No.: 201911426435.1

Technical Field

The invention relates to the water treatment industry, in particular to the aspects of deep filtration and purification of drinking water.

Background

Chinese patents ZL200910224481.3, ZL200910246024.4, ZL200910224652.2 and ZL200910215159.4 disclose a technical scheme of 'full back flushing mode' relating to all filter liners of a filter channel of a water purifier. In the technical scheme of the full backflushing mode, the key characteristic is that all filter containers in the filter channel are backflushing filter containers, so that impurities flushed out by backflushing cleaning of the backflushing filter containers positioned in the front are avoided, and the impurities cannot be discharged completely due to interception of non-backflushing filter containers in the rear filter channel. As for the backflushing filter cartridge, all backflushing filter cartridges participate when in the filtration mode; however, in the backflushing mode, only one backflushing filter cartridge is involved in each backflushing switching. However, in the above "full backflushing mode", the requirement for the related waterway switch is very high, and each backflushing filter cartridge needs to be provided with a backflushing pipeline which is respectively connected with each switching water port in the manual waterway switch, and especially the backflushing pipeline of the filter cartridge which is far away from the waterway switch is longer. Under the mode that each filter element of machine filtration passageway is in non-recoil state, there is "stagnant water" in each switching mouth of water route switch inside and the recoil pipeline that each switching mouth of a river connected respectively. In view of the fact that the switching of the manual waterway switcher belongs to a manual operation movable disk and fixed disk plane sealing switching mode, the backflushing switching operation process is laborious (high friction force) and time-consuming, and therefore the waterway switching device is difficult to move out of a machine for one-time operation every time, even the backflushing cleaning is not carried out for several months, so that the waterway switching device is similar to a nominal device, and the problem of 'dead water' is also caused. Secondly, the traditional electric control waterway switching device used on the central water purifier has the defects of few (1-2) control backflushing filter liners, invisible backflushing effect, complex loading and unloading, large workload and large volume due to lack of integrated design, and is not suitable for medium and small models. In addition, as the only wading semi-finished product in the household electrical appliance products, the maintenance service volume is dozens of times or more than that of other household electrical appliance products. Because of this, there is a space of 500 × 200 × 470 originally, and five structural design problems of mutual interleaving influence need to be satisfied at the same time: 1. a plurality of filter liners with the diameters of 70-80 mm and the lengths of 300 mm, which are arranged in a middle core area of the machine, are convenient to assemble and disassemble and move in space; 2. the appearance shell is designed to be attractive and complete, and occupies the position of a control display interface of the top surface or the front end vertical surface of the machine; 3. the position space and the damping installation structure of the water passing control part including the booster pump with the diameter of 100 mm and the length of 200 mm; 4. each wading control component is positioned on an outer layer structure position convenient for loading, unloading and maintenance; 5. the water channel switcher is connected with the water inlet end and the water outlet end outside the machine base, two external pipelines are connected between each water switching end of the fixed disc and the water inlet end and the water outlet end of each filter container, and 10-15 pipeline layers are arranged and connected inside connecting pipelines of water passing control parts such as a booster pump and the like. The above design requirements make it difficult to place the waterway switcher in a medium or small sized model, and it is more difficult to place the waterway switching device, which is involved with a plurality of pipelines, in a position where the waterway switching device is easy to operate. The Chinese patent applications 201910392598.6, 201910392597.1, 201910787597.1, 201910976709.8, 201910976707.9, 201910976706.4 and the like disclose relevant contents of the water purifier with the electric control reverse punching device. However, because the water purifiers all adopt raw water containing more and larger-sized impurities, such as colloid, silt, iron rust and the like (accounting for more than 70% of the total amount) for backflushing, new impurities can be brought in when backflushing the non-first-stage filter container at the later position in the front filtering channel, and are positioned at the later position in the front filtering channel, and the original impurities can be intercepted by the screen type filter container at the front and cannot reach the position in the filtering mode, so that the operation of the backflushing back to the filtering mode can cause more serious blockage on the filter material layer of the filter container with the smaller screen aperture at the back. Moreover, for the granular activated carbon filter container serving as a non-primary filter container and the filter container with a smaller filter pore size, the raw water backflushing mode can easily cause impurities such as colloid, silt, rust and the like to block a filter material layer or wrap the surface of the granular activated carbon filter material to cause the adsorption effect of the filter material to be obviously reduced or even lose efficacy. In addition, more water passing electric control valves are adopted along with the electric control backflushing system, so that more pipelines are introduced. The rigid pipeline has the advantages of easiness in forming, high assembly efficiency, difficulty in water leakage and tidiness in wiring, but how to determine the positions of the water passing electric control valves and select the wiring pipelines to avoid mutual crossing of the pipelines is realized, especially on the premise of meeting the overall structural layout and convenience in assembly, how to fully utilize the plane size of a machine base, or how to design an overall pipe layout scheme by using a mode of raw water backflushing (raw water is used, the raw water is simple but not enough) or filtering backflushing (backflushing water is filtered and is complex but has good effect) according to whether the surrounding pipeline layout environment can meet the requirements of the raw water backflushing or the filtering backflushing, and then a relatively proper pipe layout path is selected from a plurality of pipe layout schemes and the mode has universality but is very difficult to work, so that a great deal of mental labor is required. The above defects and shortcomings make it more difficult to reset and install the waterway switcher for filtering and backflushing switching, which is originally an extremely complicated water purifier, and directly affect the popularization of the backflushing technology of the filter cartridge.

Disclosure of Invention

The invention mainly solves the technical problem of providing a simple and practical method for laying pipelines of a front-end seat of a water purifier with a front-end electric control filtering backflushing system, so as to overcome the defects and shortcomings.

A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing through the front filter container and the rear filter container forms a forward filtering channel of two-stage forward filter containers, and the forward water passing through the forward filtering channel is characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water gap for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water outlet end of the water outlet valve is connected with a backflushing pipeline; the water inlet electric control valve is connected in series in a water passing pipeline between the front filter liner and the rear filter liner; the backflushing water inlet electric control valve is connected with the water outlet end of each of the front filter container and the rear filter container; the water inlet end of the water outlet electric control valve is connected in a pipeline between the water inlet electric control valve and the rear filter liner; a filtering backflushing channel which is used for realizing forward water passing of the front filtering container but reversely water passing of the rear filtering container and water outlet through a backflushing pipeline is formed by controlling forward water passing of the front filtering container, conducting the backflushing water inlet electric control valve and the water outlet electric control valve and closing the water inlet electric control valve; two preposed filter containers which are sequentially connected in series and connected with a relevant water passing electric control valve are arranged in a straight line and are arranged below a preposed machine base, two groups of corresponding filter container butt joint water gaps are arranged on the preposed machine base, and the respective water inlets and water outlets of the two preposed filter containers are in butt joint and determine related pipeline layout paths, and at least one group of filter container butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically in butt joint with the related water gaps of the preposed filter containers: two groups of filter liners corresponding to the water inlets and the water outlets of the two preposed filter liners are in butt joint with the water outlets and are arranged in the same direction or are vertically arranged or are reversely arranged.

A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing of the first and second filter containers as the front filter container and the third filter container as the back filter container are conducted to form three forward filter channels of the front filter containers, and the water-passing electric control valve is characterized in that an upward water-passing electric control valve is also arranged to be in butt joint with a water gap for connecting a related water passing pipeline with a water inlet and a water outlet of a water-passing electric control valve which is additionally arranged; the water outlet end of the water outlet valve is connected with a third-stage water outlet electric control valve provided with a backflushing pipeline; the third stage water inlet electric control valve is connected in series in a pipeline between the second stage filter liner and the third stage filter liner, the third stage backflushing water inlet electric control valve is connected with the water outlet ends of the second stage filter liner and the third stage filter liner respectively, the water inlet end of the third stage water outlet electric control valve is positioned in front of the third stage water inlet electric control valve, and the water inlet end of the third stage water outlet electric control valve is connected in a pipeline between the third stage water inlet electric control valve and the third stage filter liner; the first-stage filter container and the second-stage filter container are controlled to pass water in the forward direction, the third-stage backflushing water inlet electric control valve and the third-stage water outlet electric control valve are conducted, and the third-stage water inlet electric control valve is closed to form a filtering backflushing channel through which the first-stage filter container and the second-stage filter container pass water in the forward direction, but the third-stage filter container passes water in the reverse direction, and water is discharged through a backflushing pipeline; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, three groups of corresponding filter liner butt joint water gaps are arranged on the preposed engine base and are in butt joint with the respective water inlet and the respective water outlet of the three filter liners, and related pipeline layout paths are determined, and at least two groups of filter liner butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically butted with the related water gaps of the preposed filter liners: the third filter container is arranged at the rear position or the middle position or the front position, wherein the first and second filter containers are correspondingly arranged at the front and middle positions for the third filter container arranged at the rear position; for the third-stage filter container, the first and second filter containers are correspondingly arranged at the back and front positions; the third filter container is arranged at the front position, and the first filter container and the second filter container are correspondingly arranged at the back position and the middle position.

A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing of the first-stage filter container as the front filter container and the second-stage and third-stage filter containers as the rear filter container forms the forward filtering channels of the three forward filter containers by conduction, and the forward filtering channels are characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water inlet for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water outlet end of the water outlet valve is connected with a second and third stage water outlet electric control valve which are additionally provided with a backflushing pipeline; the second and third stage water inlet electric control valves are respectively connected in series in the pipelines between the first and second stage filter containers and the second and third stage filter containers, the second and third stage backflushing water inlet electric control valves are respectively connected with the respective water outlet ends of the first and second stage filter containers and the respective water inlet ends of the second and third stage filter containers, the respective water inlet ends of the two backflushing water inlet electric control valves are respectively positioned in front of the progressive water inlet electric control valve, and the water inlet ends of the second and third stage water outlet electric control valves are respectively connected in the pipelines between the second and third stage water inlet electric control valves and the progressive filter container; a filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the second-stage filter container and the water outlet of the backflushing pipeline is formed by controlling the forward water passing of the first-stage filter container and switching on the second-stage backflushing water inlet electric control valve and the second-stage water outlet electric control valve and switching off the second-stage water inlet electric control valve, or the second-stage backflushing water inlet electric control valve, the third-stage backflushing water inlet electric control valve and the third-stage water outlet electric control valve and switching off the water inlet pipeline of the third-stage filter container to form the filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the third-stage filter container and the backflushing pipeline water outlet by switching on the second-stage water inlet electric control valve, the third-stage backflushing water inlet electric control valve and switching off the third-stage water outlet electric control valve; the three preposed filter liners which are provided with a front preposed filter liner and a rear preposed filter liner along the width of the preposed machine seat and are combined with another adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed machine seat and respectively correspond to the front, middle and rear positions, three groups of corresponding filter liner butt joint water openings are arranged on the preposed machine seat and are butted with respective water inlets and water outlets of the three filter liners, and related pipeline laying paths are determined, and at least two groups of filter liner butt joint water openings are concentric inner and outer butt joint water openings with different diameters and are vertically butted with related water openings of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions respectively.

The three-stage filter container is arranged at the front position, and the corresponding first and second filter containers are arranged at the middle and rear positions or the rear and middle positions, wherein for the first and second filter containers arranged at the middle and rear positions, the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the first and second filter containers are arranged in the same direction, and the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the third filter container are arranged in the reverse direction; and for the first and second filter containers arranged at the rear and middle positions, the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the first and third filter containers are arranged in the same direction, and the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the second filter container are arranged in the opposite direction.

A pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system is provided with the front-end machine seat with a water passing pipeline of a downward filter liner butt joint water gap; the water inlet and the water outlet of a water passing electric control valve which is arranged upwards are connected with the water inlet and the water outlet of a water passing electric control valve which is additionally arranged; the water-passing electric control valve is divided into a second-stage water inlet electric control valve, a second-stage backflushing water inlet electric control valve and a third-stage backflushing water inlet electric control valve according to the application, and the second-stage water outlet electric control valve and the third-stage water outlet electric control valve are connected with a backflushing pipeline; the second stage water inlet electric control valve is connected in series in a pipeline between the first stage filter liner and the second stage filter liner, the second stage backflushing water inlet electric control valve and the third stage backflushing water inlet electric control valve are respectively connected with the water outlet ends of the first stage filter liner and the second stage filter liner and the water outlet ends of the third stage filter liner and the first stage filter liner, the water inlet ends of the two backflushing water inlet electric control valves are positioned in front of the second stage water inlet electric control valve, and the water inlet ends of the second stage water outlet electric control valve and the third stage water outlet electric control valve are respectively connected in pipelines between the second stage water inlet electric control valve and the second stage filter liner as well as the second stage filter liner and the third stage filter liner; a filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the second-stage filter container and the water outlet of the backflushing pipeline is formed by controlling the forward water passing of the first-stage filter container and switching on the second-stage backflushing water inlet electric control valve and the second-stage water outlet electric control valve and switching off the second-stage water inlet electric control valve, or a filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the third-stage filter container and the water outlet of the backflushing pipeline is formed by switching on the third-stage backflushing water inlet electric control valve and the third-stage water outlet electric control valve and switching off the second-stage water inlet electric control valve and the second-stage backflushing water inlet electric control valve; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, three groups of corresponding filter liner butt joint water gaps are arranged on the preposed engine base and are in butt joint with the respective water inlet and the respective water outlet of the three filter liners, and related pipeline layout paths are determined, and at least two groups of filter liner butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically butted with the related water gaps of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; and for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions or the middle and rear positions.

A pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system is provided with the front-end machine seat with a water passing pipeline of a downward filter liner butt joint water gap; the water inlet and the water outlet of a water passing electric control valve which is arranged upwards are connected with the water inlet and the water outlet of a water passing electric control valve which is additionally arranged; the water-passing electric control valve is divided into a second-stage water inlet electric control valve, a second-stage backflushing water inlet electric control valve and a third-stage backflushing water inlet electric control valve according to the application, and the second-stage water outlet electric control valve and the third-stage water outlet electric control valve are connected with a backflushing pipeline; the second stage water inlet electric control valve is connected in series in a pipeline between the first stage filter container and the second stage filter container, the third stage backflushing water inlet electric control valve is connected with the water outlet ends of the first stage filter container and the third stage filter container, the water inlet end of the third stage backflushing water inlet electric control valve is positioned in front of the second stage water inlet electric control valve, the second stage backflushing water inlet electric control valve is connected with the water outlet ends of the third stage backflushing water inlet electric control valve and the second stage filter container, and the water inlet ends of the second stage water outlet electric control valve and the third stage water outlet electric control valve are respectively connected in pipelines between the second stage water inlet electric control valve and the second stage filter container and between the second stage filter container and the third stage filter container; a filtering backflushing channel for forming the forward water flow of the primary filter container but the reverse water flow of the tertiary filter container and discharging water from a backflushing pipeline is formed by controlling the forward water flow of the primary filter container and switching on the second and third backflushing water inlet electric control valves and the second level water outlet electric control valve and switching off the second level water inlet electric control valve and the third level water outlet electric control valve, and switching off the second level water inlet electric control valve and the second level backflushing water inlet electric control valve, or a filtering backflushing channel for forming the forward water flow of the primary filter container but the reverse water flow of the tertiary filter container and discharging water from the backflushing pipeline is formed by switching on the third level backflushing water inlet electric control valve and the second level water outlet electric control valve and switching off the second level water inlet electric control valve and the second level backflushing water inlet electric control valve; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water openings are arranged on the preposed engine base and are butted with respective water inlets and water outlets of the three filter liners to determine related pipeline layout paths, and at least two groups of filter liner butt joint water openings are concentric inner water inlets and outer water inlets with different diameters and are vertically butted with the related water openings of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions respectively.

The three-stage filter container is arranged at the front position, the corresponding first and second filter containers are arranged at the middle and rear positions or the rear and middle positions, and the filter containers corresponding to the water inlets and the water outlets of the three filter containers are in the same direction with the water outlets.

The front-end processor base is characterized in that the positions of one or more groups of water passing electric control valves corresponding to a certain water passing electric control valve in butt joint with water gaps are changed by rotation on the premise that the corresponding connection relation of the original water passing pipeline is kept and no pipeline crossing exists, so that a derivative pipeline layout of the original water passing pipeline layout is formed; the derivative pipeline layout is formed by rotating one or more groups of water passing electric control valve butt joint water gaps corresponding to one group of filter liner butt joint water gaps to drive corresponding water passing pipelines to change, or by rotating one group of filter liner butt joint water gaps, keeping a relatively fixed structural relationship between the group of filter liner butt joint water gaps and the related water passing electric control valve butt joint water gaps, and driving the corresponding water passing pipelines to change.

The group of filter liner butt joint water gaps are water inlet and outlet butt joint water gaps which are arranged at two positions respectively and are in butt joint with water inlet and water outlet ports of the front filter liner with corresponding structural modes.

The front-end processor base is provided with corresponding internal thread structures corresponding to the upward butt joint water gap of the water passing electric control valve for fixing the water passing electric control valve in butt joint with the butt joint water gap of the water passing electric control valve; the water passing pipeline avoids the internal thread structure and a gap between the internal thread structure and a butt joint water port of the water passing electric control valve.

The raw water backflushing channel is arranged aiming at the front filter liner: a first-stage water inlet electric control valve and a first-stage backflushing water inlet electric control valve which are communicated with each other at water inlet ends and a first-stage water outlet electric control valve of which the water outlet end is connected with a backflushing pipeline are arranged; the first-stage water inlet valve is connected in series in a water inlet pipeline of the front filter liner, the water outlet end of the first-stage backflushing water inlet electric control valve is connected with the water outlet end of the front filter liner and is positioned in front of the rear water inlet electric control valve used for filtering the backflushing channel, and the water inlet end of the first-stage water outlet electric control valve is connected with the first-stage water inlet electric control valve and a pipeline between the front filter liner; a plurality of preposed filtering channels for filtering forward water of the filter container are formed by controlling and communicating the first-stage water inlet valve and the water inlet electric control valve at the back and closing the backflushing water inlet electric control valve and the water outlet electric control valve; the first stage water inlet valve is controlled to be closed, and the first stage backflushing water inlet electric control valve and the first stage water outlet electric control valve are conducted to form a raw water backflushing channel which reversely passes water in the front filter container and is discharged by a backflushing pipeline.

Compared with the existing water purifier adopting the electric control waterway switching device, the invention has the following advantages: the filter liner has good backflushing effect, is not easy to bring colloid, silt and rust with larger size which account for more than 70 percent of the total amount, and has small influence on the subsequent filter liner of the preposed filter channel; simple structure and no cost increase. The water passing pipeline layout of the upper engine base with the filter liner butt joint water gap, the water passing electric control valve butt joint water gap and the internal thread structure is more compact and simpler; provides a new choice for the related pipeline layout in the limited plane size range and the external water gap layout combination scheme including the external drainage outlet, and further meets the requirements of machine miniaturization and multiple functions.

Drawings

FIG. 1 is a schematic diagram of a waterway principle of a dual-channel prepositive electric control system in a mode of 'primary raw water backflushing, secondary raw water backflushing and tertiary filtration backflushing', which is formed by connecting and combining a first-stage water inlet electric control valve, a third-stage water inlet electric control valve, a first-stage water outlet electric control valve, a second-stage water outlet electric control valve and a third-stage water outlet electric control valve with three filter liners.

FIG. 2 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 1. The present invention adopts a water path layout diagram formed by arranging a first stage filter liner, a second stage filter liner and a third stage filter liner at the front, middle and rear positions respectively, arranging two groups of filter liner butt joint water gaps corresponding to the water inlet and the water outlet of the first stage filter liner and the third stage filter liner in the same direction, and arranging filter liner butt joint water gaps corresponding to the water inlet and the water outlet of the second stage filter liner in the opposite direction.

FIG. 3 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 1. A water flow path layout diagram is formed by arranging two, three and one-stage filter liners at the front, middle and rear positions respectively, arranging two groups of filter liner abutting water gaps corresponding to the water inlet and water outlet of the two and three-stage filter liners in the same direction, and arranging filter liner abutting water gaps corresponding to the water inlet and water outlet of the one-stage filter liner in the opposite direction.

FIG. 4 is a schematic diagram of the water path principle of the invention corresponding to FIG. 1, and is a water passing pipeline layout diagram formed by arranging three, two and one-stage filter liners at the front, middle and rear positions respectively and arranging three groups of filter liners corresponding to water inlets and water outlets of the three-stage filter liners in the same direction with respect to water outlets.

FIG. 5 is a schematic diagram of the waterway principle of the dual-channel prepositive electric control filtering backflushing system with the modes of 'primary raw water backflushing and secondary and tertiary filtering backflushing (series connection)' formed by connecting and combining the first, second and tertiary water inlet electric control valves, the first, second and tertiary backflushing water inlet electric control valves, the first, second and tertiary water outlet electric control valves and three filter liners.

FIG. 6 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 5, which is a schematic diagram of a water path layout formed by arranging three, one and two stages of filter liners at the front, middle and rear positions respectively, arranging two groups of filter liners corresponding to the water inlet and water outlet of the one and two stages of filter liners in the same direction to form a water gap, and arranging filter liners corresponding to the water inlet and water outlet of the three stages of filter liners in the opposite direction to form a water gap.

FIG. 7 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 6, which is a schematic diagram of a water path layout formed by arranging three, one and two stages of filter liners at the front, middle and rear positions respectively, arranging two groups of filter liners corresponding to the water inlet and water outlet of the one and two stages of filter liners in the same direction to form a water gap, and arranging filter liners corresponding to the water inlet and water outlet of the three stages of filter liners in the opposite direction to form a water gap.

FIG. 8 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 5, which is a schematic diagram of a water path layout formed by arranging three, two and one-stage filter liners at front, middle and rear positions respectively, arranging two groups of filter liner abutting water gaps corresponding to the water inlet and the water outlet of the one and three-stage filter liners in the same direction, and arranging filter liner abutting water gaps corresponding to the water inlet and the water outlet of the two-stage filter liners in the opposite direction.

FIG. 9 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 6. A water path layout diagram is formed by arranging two, three and one-stage filter liners at the front, middle and rear positions respectively, arranging two groups of filter liners corresponding to the water inlet and outlet of the first and second filter liners in the same direction and arranging filter liners corresponding to the water inlet and outlet of the third filter liner in the opposite direction.

FIG. 10 is a schematic diagram of the waterway principle of a dual-channel prepositive electric control system of 'primary raw water backflushing and secondary and tertiary filtering backflushing (parallel connection)' mode formed by connecting and combining a first and a second-stage water inlet electric control valve, a first, a second and a third-stage backflushing water inlet electric control valve, a first, a second and a third-stage water outlet electric control valve and three filter liners.

FIG. 11 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 10, which is a schematic diagram of a water path layout formed by arranging three, one and two stages of filter liners at the front, middle and rear positions respectively, and arranging three groups of filter liners corresponding to water inlets and water outlets of the three filter liners in the same direction as water outlets.

FIG. 12 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 10, and is a schematic diagram of a water path layout formed by arranging three, two and one-stage filter liners at the front, middle and rear positions respectively, and arranging three groups of filter liners corresponding to water inlets and water outlets of the three filter liners in the same direction as water outlets.

FIG. 13 is a schematic diagram of the water path principle of the invention corresponding to FIG. 10, and is a water passing pipeline layout diagram formed by arranging two, three and one-stage filter liners at the front, middle and rear positions respectively, arranging three groups of filter liners in the same direction with respect to a water inlet, and arranging back flushing pipelines with front and rear back flushing pipelines with respect to a water inlet.

FIG. 14 is a schematic view of the water piping layout of FIG. 13, in which a set of concentric different-diameter docking ports corresponding to the water inlet and outlet of the primary filter cartridge in the piping layout of FIG. 13 is replaced with a set of split-type docking ports of the filter cartridge and connected to related piping.

FIG. 15 is a schematic view of the water piping layout of the present invention, which is formed by replacing a set of concentric different-diameter butted water outlets corresponding to the water inlet and outlet of the secondary filter cartridge in the piping layout shown in FIG. 13 with a set of separately butted water outlets of the filter cartridge and connecting the butted water outlets of the filter cartridge with the corresponding piping, on the basis of the schematic view of the water piping layout shown in FIG. 13.

Fig. 16 is a schematic water passage layout formed by replacing a group of concentric different-diameter butted water gaps corresponding to the water inlet and the water outlet of the three-stage filter container in the pipeline layout shown in fig. 13 with a group of separated filter container butted water gaps and connecting the filter container butted water gaps with related pipelines on the basis of the schematic water passage layout shown in fig. 13.

FIG. 17 is a schematic view of the water passage layout of the present invention, which is based on the schematic view of the water passage layout of FIG. 16, and is formed by replacing a set of outer and inner butt water inlets corresponding to the water inlets and water outlets of the second-stage filter cartridge with inner and outer butt water inlets and connecting the inner and outer butt water inlets with related pipelines, and by providing back-flushing pipelines corresponding to the front and back-flushing pipelines.

FIG. 18 is a schematic diagram of a derivative pipeline layout shown in FIG. 11, which is formed by rotating the second and third water outlet electrically-controlled valves by 90 degrees and adjusting the outer and inner butt water inlets corresponding to the water inlets and water outlets of the second and third filter liners to inner and outer butt water inlets on the basis of the schematic diagram of the water pipeline shown in FIG. 11.

Fig. 19 is a schematic view of the water passage line layout formed by the first-stage water inlet electric control valve rotated 90 degrees, the first-stage water inlet electric control valve and the first-stage backflushing water inlet electric control valve exchanged in position, the original water passage line connection relation is maintained, and the backflushing line of the front backflushing line and the back backflushing line to the water receiving port are arranged on the basis of the schematic view of the water passage line layout of fig. 18.

Fig. 20 is a schematic diagram of the waterway principle of a dual-channel prepositive electric control system of 'primary raw water backflushing and secondary and tertiary filtering backflushing (shunting)' mode formed by connecting and combining a first and a second-stage water inlet electric control valve, a first, a second and a third-stage backflushing water inlet electric control valve, a first, a second and a third-stage water outlet electric control valve and three filter bladders.

FIG. 21 is a schematic diagram of the water path principle of the present invention corresponding to FIG. 20, which is a schematic diagram of a water path layout formed by arranging three, one and two stages of filter liners at the front, middle and rear positions respectively, and arranging three groups of filter liners corresponding to water inlets and water outlets of the three filter liners in the same direction as water outlets.

FIG. 22 is a schematic diagram of the waterway principle of the present invention corresponding to FIG. 20, which is a schematic diagram of the water piping layout formed by arranging three, two and one-stage filter liners at the front, middle and rear positions respectively, and arranging three groups of filter liners corresponding to the water inlets and water outlets of the three filter liners in the same direction as the water outlets.

FIG. 23 is a schematic view of a water passage layout formed by arranging two, three and one-stage filter liners at the front, middle and rear positions respectively, arranging three groups of filter liners corresponding to the three filter liners in the same direction with respect to water inlets, and arranging back flushing pipes of the front and rear back flushing pipes with respect to water inlets, on the basis of the schematic view of the water passage principle shown in FIG. 20.

Detailed Description

Example 1. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the front filtering channel of the two-stage front filtering container is formed by conducting the forward water passing through the front filtering container and the rear filtering container.

The pipeline layout method of the front-end processor base of the water purifier is also provided with an upward water passing electric control valve butt joint water gap and a fixing screw hole, the water passing electric control valve butt joint water inlet and water outlet are additionally arranged, and the water passing electric control valve is fixed on the front-end processor base and connected with a relevant water passing pipeline through the connection of a screw and a fixing screw; the water outlet end of the water outlet valve is connected with a back water outlet electric control valve which is additionally provided with a back flushing pipeline; the rear water inlet electric control valve is connected in series in a pipeline between the front filter liner and the rear filter liner, the rear backflushing water inlet electric control valve is connected with the water outlet ends of the front filter liner and the rear filter liner, and the water inlet end of the rear water outlet electric control valve is connected in a pipeline between the rear water inlet electric control valve and the rear filter liner; the filtering recoil channel for forward water passing of the front filtering container but reverse water passing of the rear filtering container and water outlet through a recoil pipeline is formed by controlling the forward water passing of the front filtering container, conducting the rear recoil water inlet electric control valve and the rear water outlet electric control valve and closing the rear water inlet electric control valve.

Two preposed filter containers which are sequentially connected in series and connected with a relevant water passing electric control valve are arranged in a straight line and are arranged below a preposed machine base, two groups of corresponding filter container butt joint water gaps are arranged on the preposed machine base, and the respective water inlets and water outlets of the two preposed filter containers are in butt joint and determine related pipeline layout paths, and at least one group of filter container butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically in butt joint with the related water gaps of the preposed filter containers: two groups of filter liners corresponding to the water inlets and the water outlets of the two preposed filter liners are in butt joint with the water outlets and are arranged in the same direction or are vertically arranged or are reversely arranged.

As for the two-stage front filter container, once the water passing pipeline of the front processor base is connected with the front filter container and the rear filter container through the filter container butt joint water gap, and is connected with the relevant water passing electric control valve through the upward water passing electric control valve butt joint water gap, a filtering backflushing channel of the rear filter container can be formed. On the basis, the front-end processor base can determine the specific layout of a water passing pipeline (comprising a water passing electric control valve) of the front-end electric control filtering backflushing system through the positions of two groups of four filter container butt joint water gaps corresponding to the water inlets and the water outlets of the front filter container and the rear filter container respectively, three water gap matching modes of parallel 'same-direction arrangement' or mutual 'vertical arrangement' or parallel 'reverse arrangement' are respectively given to the two groups of filter container butt joint water gaps corresponding to the water inlets and the water outlets of the two front filter containers, and the three matching modes of the front filter container and the rear filter container are respectively corresponding to the front filter container and the rear filter container.

In the scheme, the 'equidirectional arrangement' and the 'reverse arrangement' have macroscopic broad concepts. The setting direction of the group of filter liner butting water openings is represented by the indication direction from back to front of the connecting line of the filter liner butting water openings corresponding to the water inlet of the front filter liner (the rear end of the corresponding connecting line) to the filter liner butting water openings corresponding to the water outlet of the front filter liner (the front end of the corresponding connecting line).

When the corresponding included angle between the indication directions (setting direction, the same below) of the connecting lines of the filter liner abutting water gaps of the two groups of filter liner abutting water gaps is smaller than 90 degrees, the two groups of filter liner abutting water gaps are regarded as parallel 'equidirectional setting'; when the included angle between the connecting lines of the two groups of filter liner butting water gaps is larger than 90 degrees, the two groups of filter liner butting water gaps are regarded as parallel reverse arrangement. The 'same direction setting' and 'reverse setting' both refer to the indication direction of the connecting line of the filter liner butt joint water gap which is arranged in a shorter path on the premise of meeting the requirement of pipeline arrangement.

As a specific example, when the included angle between the directions indicated by the respective connecting lines of the two groups of filter element butt joint water gaps is about 90 °, the two groups of filter element butt joint water gaps are regarded as being mutually arranged in a vertical mode, and at this time, the two groups of filter element butt joint water gaps can be regarded as being arranged in the same direction or in a reverse direction. The same applies to the following embodiments (in which "vertical arrangement" is not mentioned unless otherwise specified).

It should be clear that, after the schematic diagram of the water path principle connecting each preposed filter container and the related water passing electric control valve is determined, the key factors determining the layout and the trend of the pipeline are the mutual positions and the pipeline connection relationship of the first, second and third filter containers and the corresponding three groups of filter containers in butt joint with the water gaps, and the arrangement position of each water passing electric control valve. The "same direction arrangement" and "reverse direction arrangement" and "vertical arrangement" are only to describe the approximate arrangement direction of the two or three groups of filter liners to the water ports and the corresponding relationship between the water passing electric control valve and the connecting pipeline position, direction and direction, and then the pipes are arranged one by one according to the water path principle schematic diagram to form the corresponding overall pipeline layout, such as the pipeline layout schematic diagram shown in the following drawings in the present case.

In this embodiment, the front filter container and the rear filter container correspond to the first and second filter containers, respectively.

On the basis, a front filter container serving as a front filter container can be arranged in a water inlet pipeline of the primary filter container, namely two front filter containers are adopted. The essence of the mode is that the filtering backflushing mode originally used in two front filter liners and arranged as a second-stage filter liner of a rear filter liner is changed into the filtering backflushing mode implemented by aiming at a third-stage filter liner of the rear filter liner in three front filter liners by additionally arranging two front filter liners, namely, the embodiment is also suitable for a three-front filter liner serial combination mode of arranging two front filter liners and one rear filter liner (see embodiment 2).

For the multi-filter material composite filter liner adopted by the water purifier, a plurality of filter liners or filter material layers which do not change the water passing path are treated as one filter liner.

In the scheme, the inner water port and the outer water port of the group of inner and outer opposite water receiving ports correspond to the water inlet and the water outlet of the preposed filter liner or correspond to the water outlet and the water inlet of the preposed filter liner (the same below).

Example 2. As described in connection with figures 1-4. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; through switching on the first and second filter containers as the front filter container and the third filter container as the back filter container, the forward water flows to form the front filter channels of three front filter containers: the front and rear ends 1a, 1b of the water passing pipeline connecting each prepositive filter liner in series are connected with the water inlet and outlet pipelines 3, 4 of the prepositive machine base to form a prepositive filter channel (the same below).

The water purifier front-end machine seat pipeline layout method is also provided with an upward water passing electric control valve butt joint water gap for connecting a relevant water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve 2; in the water passing electric control valve of which the butt joint water gap is butted with the water passing electric control valve, the water passing electric control valve is divided into a third-stage water inlet electric control valve 28 and a third-stage backflushing water inlet electric control valve 23 according to the purpose, and a water outlet end is connected with a third-stage water outlet electric control valve 27 additionally provided with a backflushing pipeline 5; the third stage water inlet electric control valve 28 is connected in series in the pipeline between the second stage filter container 12 and the third stage filter container 13, the third stage backflushing water inlet electric control valve 23 is connected with the respective water outlet ends of the second stage filter container 12 and the third stage filter container 13, and the water inlet end of the third stage backflushing water inlet electric control valve is positioned in front of the third stage water inlet electric control valve 28. The water inlet end of the third-stage water outlet electric control valve 27 is connected in a pipeline between the third-stage water inlet electric control valve 28 and the third-stage filter container 13; the first and second filter containers 11 and 12 positively pass water, the third stage backflushing water inlet electric control valve 23 and the third stage water outlet electric control valve 27 are conducted, and the third stage water inlet electric control valve 28 is closed, so that a filtering backflushing channel, in which the first and second filter containers 11 and 12 positively pass water, but the third filter container 13 reversely passes water and the water is discharged from the backflushing pipeline 5, is formed.

The three preposed filter liners 1 which are provided with a front preposed filter liner 1 and a rear preposed filter liner 1 along the width of the preposed machine seat and are combined with another adjacent preposed filter liner 1 are arranged below the preposed machine seat in a triangular structure layout and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water gaps are arranged on the preposed machine seat and are in butt joint with the water inlet and the water outlet of each preposed filter liner 1, wherein the filter liner butt joint water gaps 11a and 11b are respectively in butt joint with the water inlet and the water outlet of the first-stage filter liner 11, the filter liner butt joint water gaps 12a and 12b are respectively in butt joint with the water inlet and the water outlet of the second-stage filter liner 12, and the filter liner butt joint water gaps 13a and 13b are respectively in butt joint with the water inlet and the water outlet (the same below) of the third-stage filter liner 13.

In order to facilitate the reading of the drawing, in the drawings 2 to 4, 6 to 9, 11 to 19 and 21 to 23 relating to the specific trend of the water flow pipeline, the positions corresponding to the upper and lower prepositioned filter containers 1 in the drawings are respectively defined as the rear position and the front position, and the position between the front position and the rear position or adjacent (corresponding to the acute angle position of a right triangle) is defined as the middle position.

The position of three filter container butt joint mouths of water of three corresponding filter containers determines the related pipeline layout path, and at least two groups of filter container butt joint mouths of water are concentric inner and outer butt joint mouths with different diameters, and are vertically butted with the related mouths of water of the front filter containers:

the three-stage filter container is arranged at the rear position or the middle position or the front position, wherein:

for the third filter container 13 is arranged at the rear position shown in the attached drawing 2, the first and second filter containers 11 and 12 are correspondingly arranged at the front and middle positions, and the filter container docking water ports 11a and 11b corresponding to the water inlet and outlet of the first and third filter containers are arranged in the same direction as the filter container docking water ports 13a and 13b, i.e. the direction formed by the filter container docking water ports 11a and 11b is the same as the direction formed by the filter container docking water ports 13a and 13b (the same below), and the filter container docking water ports 12a and 12b corresponding to the water inlet and outlet of the second filter container are arranged in the opposite direction (the same below), as shown in the attached drawing 2.

According to a water path schematic diagram shown in the attached figure 1, the pipeline layout is carried out according to the specific positions of the three groups of filter container butt joint water gaps, the water passing pipeline direction determined by the water passing electric control valve butt joint water gaps, all water pipelines connected around the three preposed filter containers and related water passing electric control valves, and the water passing electric control valves are arranged at corresponding plane positions to butt joint the water gaps to complete the pipeline layout of the preposed machine base.

In each drawing in the scheme, for the water inlet butt joint water gap of the water passing electric control valve, a circle is used for representing the water inlet butt joint water gap of the water passing electric control valve; two circles with different diameters are used for representing the water outlet butt joint water gap of the water passing electric control valve, and the arrow direction between the water inlet butt joint water gap and the water outlet butt joint water gap of the water passing electric control valve is used for representing the water passing direction (the water passing electric control valve has the requirement on the water passing direction).

For the third stage filter container 13 arranged at the middle position shown in the attached figure 3, the first stage filter container 11 and the second stage filter container 12 are correspondingly arranged at the back position and the front position, and the filter container butt joint water gaps 12a and 12b and 13a and 13b corresponding to the water inlet and the water outlet of the second stage filter container and the third stage filter container are arranged in the same direction, and the filter container butt joint water gaps 11a and 11b corresponding to the water inlet and the water outlet of the first stage filter container are arranged in the reverse direction.

For the three-stage filter container 13 is arranged at the front position shown in the figure 4, the first and second filter containers 11 and 12 are correspondingly arranged at the rear and middle positions, and the water inlets and water outlets of the three filter containers can be arranged in the same direction as 11a and 11b and 12a and 12b and 13a and 13b (figure 4).

The water inlets and the water outlets of the three front filter containers are arranged in a reverse direction, which brings troubles to the injection molding and manufacturing of the filter containers (the directions indicated by the handles after the filter containers are assembled are not consistent). While the associated mold needs to be set apart for the associated part to maintain consistency. Therefore, on the premise of not influencing the layout of the water passing pipeline, the mode that three groups of filter containers corresponding to the water inlets and the water outlets of the three filter containers are arranged in the same direction with the water outlets is optimized as far as possible, so that the appearance structures of the three preposed filter containers are mutually coordinated.

The raw water backwash passage and the corresponding construction mode in each drawing are described in example 11 (the same applies below).

In the present case, at least two concentric inner and outer butt water receiving ports with different diameters are provided, and are vertically butted with a related water gap of a front filter liner.

Example 3. As described in connection with fig. 5-9. A pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system is provided with the front-end machine seat with a water passing pipeline of a downward filter liner butt joint water gap; the forward water passing through the first filtering container as the front filtering container and the second and third filtering containers as the back filtering container constitute the front filtering channels of the three front filtering containers.

The water purifier front-end machine seat pipeline layout method is also provided with an upward water passing electric control valve butt joint water gap for connecting a relevant water passing pipeline with a water inlet and a water outlet of a water passing electric control valve which is additionally arranged; the water passing electric control valve 2 is divided into a second-level water inlet electric control valve 24, a third-level water inlet electric control valve 28, a second-level backflushing water inlet electric control valve 22, a third-level backflushing water inlet electric control valve 23 and a second-level water outlet electric control valve 26, a third-level water outlet electric control valve 27, wherein the water outlet end of the second-level water inlet electric control valve is connected with a backflushing pipeline 5; the second-stage water inlet electric control valve 24 is connected in series in the pipeline between the first-stage filter liner 11 and the second-stage filter liner 12; the third stage water inlet electric control valve 28 is connected in series in the pipeline between the second stage filter container 12 and the third stage filter container 13. The second-stage backflushing water inlet electric control valve 22 is connected with the respective water outlet ends of the first-stage filter container 11 and the second-stage filter container 12, and the water inlet end of the second-stage backflushing water inlet electric control valve is positioned in front of the second-stage water inlet electric control valve 24; the third stage backflushing water inlet electric control valve 23 is connected with the respective water outlet ends of the second and third stage filter containers 12 and 13, and the water inlet end of the third stage backflushing water inlet electric control valve is positioned in front of the third stage water inlet electric control valve 28. The water inlet end of the second-stage water outlet electric control valve 26 is respectively connected in a pipeline between the second-stage water inlet electric control valve 24 and the second-stage filter container 12; the water inlet end of the third-stage water outlet electric control valve 27 is connected in a pipeline between the third-stage water inlet electric control valve 28 and the third-stage filter liner.

The forward water passing of the primary filter container 11 is controlled, the second-stage backflushing water inlet electric control valve 22 and the second-stage water outlet electric control valve 26 can be conducted, and the second-stage water inlet electric control valve 24 is closed, so that a filtering backflushing channel which allows the primary filter container 11 to pass through the forward water but allows the secondary filter container 12 to pass through the reverse water and allows the backflushing pipeline 5 to discharge the water is formed.

The filtering backflushing channel for the forward water passing of the first-stage filter container 11, but the reverse water passing of the third-stage filter container 13 and the water outlet of the backflushing pipeline 5 is formed by controlling the forward water passing of the first-stage filter container 11 and also conducting the second and third-stage backflushing water inlet electric control valves 22 and 23 and the third-stage water outlet electric control valve 27 and closing the third-stage water inlet electric control valve 28 or closing the second and third-stage water inlet electric control valves 24 and 28.

The water is positively passed through the primary filter container 11, and the secondary water inlet electric control valve 24, the tertiary backflushing water inlet electric control valve 23 and the tertiary water outlet electric control valve 27 are conducted, and the secondary backflushing electric control valve 22 and the tertiary water inlet electric control valve 28 are closed, so that a filtering backflushing channel for positively passing water through the primary filter container 11 and the secondary filter container 12, reversely passing water through the tertiary filter container 13 and discharging water through the backflushing pipeline 5 is formed.

The three preposed filter liners which are provided with a front preposed filter liner and a rear preposed filter liner along the width of the preposed machine seat and are combined with another adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed machine seat and respectively correspond to the front, middle and rear positions, three groups of corresponding filter liner butt joint water openings are arranged on the preposed machine seat and are butted with respective water inlets and water outlets of the three filter liners, and related pipelines are determined to be arranged, and at least two groups of filter liner butt joint water openings are concentric inner and outer butt joint water openings with different diameters and are vertically butted with related water openings of the preposed filter liners:

the tertiary filter container 13 is placed in either a middle position or a front position, wherein:

for the third filter container 13 is arranged at the middle position shown in the attached figure 9, the first and second filter containers 11 and 12 are correspondingly arranged at the back and front positions, and the filter container butt joint water gaps 11a and 11b and 12a and 12b corresponding to the water inlet and outlet of the first and second filter containers are arranged in the same direction, and the filter container butt joint water gaps 13a and 13b corresponding to the water inlet and outlet of the third filter container are arranged in the opposite direction.

For the three-stage filter containers shown in fig. 6, 7 and 8, the corresponding primary and secondary filter containers 11 and 12 are placed in the front position, the middle and rear positions (fig. 6 and 7) or the rear and middle positions (fig. 8).

Example 4. On the basis of the embodiment 3, the three-stage filter container is arranged at the front position, and the corresponding primary filter container and the corresponding secondary filter container are arranged at the middle position and the rear position or the rear position and the middle position, wherein:

for the first and second filter containers arranged at the middle and rear positions shown in the attached figures 6 and 7, the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the first and second filter containers are arranged in the same direction, and the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the third filter container are arranged in the opposite direction.

Fig. 6 and fig. 7 have a relationship, and on the basis of the pipeline layout shown in fig. 6, the pipeline layout shown in fig. 7 is formed by adjusting the positions of the water inlets of the water passing electric control valves 23, 27, 25, and 26, so that the pipeline layout shown in fig. 7 can be said to belong to a derivative pipeline layout of the pipeline layout shown in fig. 6.

For the first and second filter containers arranged at the rear and middle positions shown in figure 8, the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the first and third filter containers are arranged in the same direction, and the filter container butt joint water gaps corresponding to the water inlet and the water outlet of the second filter container are arranged in the opposite direction.

In the attached figure 8, the filter container butt joint water gaps 11a, 11b and 13a, 13b corresponding to the water inlet and the water outlet of the first and the third filter containers are arranged in the same direction, and the filter container butt joint water gaps 12a, 12b corresponding to the water inlet and the water outlet of the second filter container are arranged vertically with the other two groups of filter container butt joint water gaps. This embodiment regards this "vertical arrangement" as the reverse arrangement.

In view of the many drawings in the present application, if the vertical arrangement is taken as a separate technical feature to independently show the combined technical scheme of the vertical arrangement and the two groups of filter liners abutting water gaps, the vertical arrangement is still too complicated.

The vertical arrangement in the present application is sufficient to explain the positional relationship between one set of water gaps butted by filter liners and another two sets of water gaps butted by filter liners with a definite positional relationship, and the present application is further limited to clarify the technical problems to be solved, clarify the technical schemes of various types of filtering back flushing (water path structure principle), clarify the mutual connection relationship between the components in the technical schemes, and allow the filter liners to rotate (see embodiment 8 in the specific technical scheme) on the premise that the three filter liners connected in series are in a triangular structure layout and the water passage layout shown in the related drawings, and simplify the vertical arrangement characteristics, or treat the front-end processor as the same direction arrangement or the reverse arrangement, and the related pipe layouts expressed in the two arrangement modes have consistency and do not have contradiction or cross crossing of the pipes, so as to simplify the related expressions on the premise that the specific schemes are clear and complete. In this case, the case of "vertical arrangement" will be described only by way of example in fig. 8.

The electric control device can control the second and third stage water inlet electric control valves 24 and 28 to close and conduct the second and third stage backflushing electric control valves 22 and 23 and the third stage water outlet electric control valve 27 to form a filtering backflushing channel in which the first stage filter container 11 passes water in the forward direction but the third stage filter container 13 passes water in the reverse direction and water is discharged from the backflushing pipeline 5.

The electric control device can also control the third-stage water inlet electric control valve 28 to close and conduct the second-stage water inlet electric control valve 24, the third-stage backflushing electric control valve 23 and the third-stage water outlet electric control valve 27 to form a filtering backflushing channel for the first and second- stage filter containers 11 and 12 to pass water in the forward direction but the third-stage filter container 13 to pass water in the reverse direction and to discharge water through the backflushing pipeline 5.

Example 5. As described in connection with fig. 10-19. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing through the first filtering container as the front filtering container and the second and third filtering containers as the back filtering container constitute the front filtering channels of the three front filtering containers.

The water purifier front-end machine seat pipeline layout method is also provided with an upward water passing electric control valve butt joint water gap for connecting a relevant water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; in the water-passing electric control valve of which the water-passing electric control valve is butted with the water port, the water-passing electric control valve is divided into a second-stage water-inlet electric control valve 24, second-stage and third-stage backflushing water-inlet electric control valves 22 and 23 according to the purpose, and second-stage and third-stage water-outlet electric control valves 26 and 27 of which the water outlet ends are connected with backflushing pipelines; the second-stage water inlet electric control valve 24 is connected in series in a pipeline between the first-stage filter container 11 and the second-stage filter container 12, the second-stage backflushing water inlet electric control valve 22 is connected with the respective water outlet ends of the first-stage filter container 11 and the second-stage filter container 12, and the water inlet end of the second-stage backflushing water inlet electric control valve is positioned in front of the second-stage water inlet electric control valve 24; the third-stage backflushing water inlet electric control valve 23 is connected with the respective water outlet ends of the first-stage filter container 11 and the third-stage filter container 13, and the water inlet end of the third-stage backflushing water inlet electric control valve is positioned in front of the second-stage water inlet electric control valve 24; the water inlet end of the second-stage water outlet electric control valve 26 is respectively connected in a pipeline between the second-stage water inlet electric control valve 24 and the second-stage filter container 12; the water inlet end of the third-stage water outlet electric control valve 27 is connected in a pipeline between the second-stage filter container 12 and the third-stage filter container 13.

By controlling the forward water passing of the primary filter container 11, the second-stage backflushing water inlet electric control valve 22 and the second-stage water outlet electric control valve 26 can be conducted, and the second-stage water inlet electric control valve 24 is closed, a filtering backflushing channel which enables the primary filter container 11 to pass the forward water but enables the secondary filter container 12 to pass the reverse water and enables the water to be discharged from the backflushing pipeline 5 is formed. As an improvement, the third-stage backflushing water inlet electric control valve 23 is closed to avoid the influence of shunting on the filtering backflushing effect caused by opening the water outlet valve of the water outlet pipeline through misoperation.

The filtering backflushing channel for the water passing through the primary filter container 11 in the forward direction but passing through the tertiary filter container 13 in the reverse direction and discharging water from the backflushing pipeline 5 is formed by controlling the forward water passing of the primary filter container 11, switching on the third-stage backflushing water inlet electric control valve 23 and the third-stage water outlet electric control valve 27 and switching off the second-stage water inlet electric control valve 24 and the second-stage backflushing water inlet electric control valve 22.

The three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water openings are arranged on the preposed engine base and are butted with respective water inlets and water outlets of the three filter liners to determine related pipeline layout paths, and at least two groups of filter liner butt joint water openings are concentric inner water inlets and outer water inlets with different diameters and are vertically butted with the related water openings of the preposed filter liners: the tertiary filter container 13 is placed in either a middle position or a front position, wherein:

for the three-stage filter container arranged at the middle position shown in the figure 13, the first and second filter containers 11 and 12 are correspondingly arranged at the rear and front positions, and three groups of filter containers corresponding to the water inlets and the water outlets of the three filter containers are arranged in the same direction with the water outlets 11a and 11b and 12a, 12b and 13a and 13 b.

For the three-stage filter container to be arranged at the front position shown in the attached figures 11 and 12, the corresponding primary and secondary filter containers 11 and 12 are arranged at the middle and rear positions (figure 11) or the rear and middle positions (figure 12). See example 7 for details.

Example 6. As described in connection with fig. 20-23. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing through the first filtering container as the front filtering container and the second and third filtering containers as the back filtering container constitute the front filtering channels of the three front filtering containers.

The water purifier front-end machine seat pipeline layout method is also provided with an upward water passing electric control valve butt joint water gap for connecting a relevant water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water passing electric control valve 2 which is butted with the water inlet in the butt joint of the water passing electric control valve is divided into a second-stage water inlet electric control valve 24, second-stage and third-stage backflushing water inlet electric control valves 22 and 23 according to the application, and the second-stage and third-stage water outlet electric control valves 22 and 23 of which the water outlet ends are connected with a backflushing pipeline 5; the second-stage water inlet electric control valve 24 is connected in series in a pipeline between the first-stage filter container 11 and the second-stage filter container 12, the third-stage backflushing water inlet electric control valve 23 is connected with the water outlet ends of the first-stage filter container 11 and the third-stage filter container 13 respectively, the water inlet end of the third-stage backflushing water inlet electric control valve is positioned in front of the second-stage water inlet electric control valve 24, the second-stage backflushing water inlet electric control valve 22 is connected with the water outlet ends of the third-stage backflushing water inlet electric control valve 23 and the second-stage filter container 12 respectively, and the water inlet end of the second-stage water outlet electric control valve 26 is connected in a pipeline between the second-stage water inlet electric control valve 24 and the second-stage filter container 12; the water inlet end of the third-stage water outlet electric control valve 27 is connected in a pipeline between the second-stage filter container 12 and the third-stage filter container 13.

The filtering backflushing channel for the forward water passing of the primary filter container 11, the reverse water passing of the secondary filter container 12 and the water outlet of the backflushing pipeline 5 is formed by controlling the forward water passing of the primary filter container 11, conducting the second and third backflushing water inlet electric control valves 22 and 23 and the second stage water outlet electric control valve 26 and closing the second stage water inlet electric control valve 24.

The filtering backflushing channel for the water passing through the primary filter container 11 in the forward direction but passing through the tertiary filter container 13 in the reverse direction and discharging water from the backflushing pipeline 5 is formed by controlling the forward water passing of the primary filter container 11, switching on the third-stage backflushing water inlet electric control valve 23 and the third-stage water outlet electric control valve 27 and switching off the second-stage water inlet electric control valve 24 and the second-stage backflushing water inlet electric control valve 22.

By controlling the forward water passing of the first-stage filter container 11, the third-stage backflushing water inlet electric control valve 23 and the second-stage water outlet electric control valve 26 can be conducted, and the second-stage water inlet electric control valve 24 and the second-stage backflushing water inlet electric control valve 22 are closed, a filtering backflushing channel which enables the first-stage filter container 11 to pass the forward water but enables the second-stage filter container 12 and the third-stage filter container 13 to pass the reverse water and enables the water to be discharged through the backflushing pipeline 5 is formed.

The three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water openings are arranged on the preposed engine base and are butted with respective water inlets and water outlets of the three filter liners to determine related pipeline layout paths, and at least two groups of filter liner butt joint water openings are concentric inner water inlets and outer water inlets with different diameters and are vertically butted with the related water openings of the preposed filter liners: the three-stage filter container is arranged at the middle position or the front position, wherein:

for the three-stage filter container 13 arranged at the middle position shown in the attached figure 23, the first and second filter containers 11 and 12 are correspondingly arranged at the back and front positions, two groups of filter container butt joint water gaps 11a and 11b and 12a and 12b corresponding to the water inlet and the water outlet of the first and second filter containers are arranged in the same direction, and the filter container butt joint water gaps 13a and 13b corresponding to the water inlet and the water outlet of the three-stage filter container are arranged in the opposite direction.

For the three-stage filter container 13 to be placed at the front position shown in the attached figures 21 and 22, the corresponding one-stage and two- stage filter containers 11 and 12 are placed at the middle and rear positions (figure 21) or the rear and middle positions (figure 22). See example 7 for details.

Example 7. On the basis of the embodiments 5 and 6, the three-stage filter container is arranged at the front position shown in the attached drawings 11, 12, 21 and 22, the corresponding first and second filter containers are arranged at the middle and rear positions shown in the attached drawings 11 and 21 or at the rear and middle positions shown in the attached drawings 12 and 22, and the filter container butt joint water gaps 11a and 11b, 12a and 12b, and 13a and 13b corresponding to the water inlets and the water outlets of the three filter containers are arranged in the same direction.

Comparing example 5 with example 6, and comparing fig. 10 with fig. 20, the two types of water passing back flush modes are formed because the connection relationship of the pipelines of the second back flush water inlet electric control valve 22 is different. The scheme of the figure 10 is simpler and has less restriction, and the third-stage recoil water inlet electric control valve 23 has long service life.

On the basis, two water passing pipeline connection layouts are formed between the attached drawings 10 and 20 around the second backflushing water inlet electric control valve 22. Similarly, the corresponding different water passing pipeline connection layouts are formed around the second backflushing water inlet electric control valve 22 between the attached drawings 11 and 21 and between the attached drawings 12 and 22.

Example 8. On the basis of embodiments 1, 2, 3, 4, 5, 6 and 7, the front-end processor base changes the positions of one or more groups of water inlets of the water passing electric control valves corresponding to one filter bladder by rotation on the premise of keeping the corresponding connection relationship of the original water passing pipelines of the water passing electric control valves and no pipeline crossing, so as to form a derivative pipeline layout of the original water passing pipeline layout.

The layout of the derived pipeline can be formed by rotating one or more groups of water passing electric control valve butt joint water gaps corresponding to one group of filter liner butt joint water gaps to drive corresponding water passing pipelines to change.

Taking the structure shown in fig. 21 as an example, the third-stage backflushing water inlet electric control valve 23 is rotated 90 degrees counterclockwise, and the original connection relationship of the water inlet and outlet end water passing pipelines is maintained and the corresponding water passing pipelines are driven to change to form a corresponding derivative pipeline layout.

The layout of the derived pipeline can also be formed by rotating a group of filter liner butting water gaps, keeping a relatively fixed structural relationship between the group of filter liner butting water gaps and the related water passing electric control valve butting water gaps and driving the corresponding water passing pipeline to change.

Taking the structure shown in fig. 21 as an example, the water inlet butt joint water gap 13a in a group of filter liner butt joint water gaps rotates 90 degrees counterclockwise around the water outlet butt joint water gap 13b, and the relatively fixed structural relationship between the group of filter liner butt joint water gaps and the butt joint water gaps of the second-stage backflushing water inlet electric control valve 22 and the third-stage water outlet electric control valve 27 is maintained, and corresponding water passing pipelines are driven to change to form corresponding derivative pipeline layouts.

Furthermore, the outer butt water inlet 13a of the water inlet of the three-stage filter container 13 can be changed into an inner butt water inlet and directly connected with the water inlet end of the lower third-stage water outlet electric control valve 27, and the inner butt water inlet 13b of the water outlet of the three-stage filter container 13 and the water outlet end of the third-stage backflushing water inlet electric control valve can be changed into an outer butt water inlet. On the basis, the third-stage water outlet electric control valve 27 rotates 90 degrees anticlockwise around the inner butt joint water gap, the original connection relation of water passing pipelines at the water inlet end and the water outlet end is kept, and the corresponding water passing pipelines are driven to change to form corresponding derivative pipeline layout. On the basis, the water inlet and the water outlet of the primary filter container or the secondary filter container can be exchanged and keep the original corresponding pipeline connection relation.

On the basis of the technical scheme shown in fig. 11, the second and third water outlet electric control valves 26 and 27 are rotated by 90 °, and the outer and inner butt water inlets corresponding to the water inlets and the water outlets of the second and third filter liners 12 and 13 are adjusted to inner and outer butt water inlets, so that another derivative pipeline layout is formed, and the structure shown in fig. 18 is adopted.

In fig. 18 and 19, the water inlet pipeline connected to the water inlet 13a in the third-stage filter container or passes through the right side of the rear (upper) internal thread structure corresponding to the third water outlet electric control valve 27. Besides, the water inlet pipeline connected with the butt joint water gap 13a in the third-stage filter container can also pass through the left side of the rear internal thread structure corresponding to the third water outlet electric control valve 27.

Two screws for fixing the third water outlet electric control valve 27 are respectively connected and matched with two corresponding front and rear internal thread structures of the third water outlet electric control valve 27.

It is difficult to enumerate the derived piping layouts for the four types of water piping layouts of fig. 1, 5, 10, 20 depending on the space. Specifically, for a three-filter-bladder water-passing pipeline layout for a triangular structure layout, the three-filter-bladder water-passing pipeline layout can be determined to belong to a derivative pipeline layout of the water-passing pipeline layout shown in the attached drawing of the scheme only by converting the three-filter-bladder water-passing pipeline layout into the attached drawing of the scheme through rotation or rotation and movement.

The present embodiment does not change the connection relationship between the front and rear water passing pipes of the rotated water passing electric control valve (different from the change between the embodiments 5 and 7), and maintains the original overall pipe layout and the approximate pipe direction, thus belonging to the derivative pipe layout of the original water passing pipe layout type. Generally, under the premise of having enough pipeline layout positions, in the three filter containers which are in a triangular structural layout, each filter container can rotate 90 degrees clockwise or anticlockwise, and the water passing electric control valve corresponding to the filter container still keeps the original water passing pipeline connection relation.

In this case, the present disclosure is not limited to the layout of the pipes shown in the drawings. The new drawings obtained by performing the overall rotation (three filter containers rotate together) or the mirror image processing (three filter containers mirror images together) on the attached drawings 2-4, 6-9, 11-19 and 21-23 also belong to the derivative pipeline layout of the original water pipeline layout shown in the related drawings of the present application because the mutual position relationship among the components and the original pipeline connection relationship are not substantially changed.

It is common to use a mirror image process that is rotated 90 ° overall or mirrored horizontally overall or mirrored vertically overall.

For example, mirroring the FIG. 2 in the horizontal direction results in the derivative of FIG. 2: the three-stage filter container is arranged at the front position, the corresponding first and second- stage filter containers 11 and 12 are correspondingly arranged at the back and middle positions, the filter container butt joint water gaps 12a and 12b and 13a and 13b corresponding to the water inlet and outlet of the second and third-stage filter containers are arranged in the same direction, and the filter container butt joint water gaps 11a and 11b corresponding to the water inlet and outlet of the first-stage filter container are arranged in the reverse direction.

On the basis, in order to reduce the attached drawings, the scheme only uses the attached drawing 2 to explain the pipeline layout of the rear position of the three-stage filter container, focuses on the related drawings of the pipeline layout of the front position of the three-stage filter container 13, and performs mirror image processing on the related drawings along the horizontal direction to obtain the pipeline layout drawing of the rear position of the corresponding three-stage filter container. By analogy, the figure in the scheme can be subjected to mirror image processing along the vertical direction, and then the corresponding derived pipeline layout figure can be obtained.

The derivative pipeline layout of the original water passing pipeline layout is in the protection range of the application as the original water passing pipeline layout.

Example 9. As described in connection with fig. 14-17. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 7 and 8, the butt joint water gap of one group of filter containers is changed into a butt joint water gap of an inlet and an outlet which are separately arranged at two positions and are butt jointed with the water inlet and the water outlet which are provided with corresponding structural modes on the front filter container.

Compared with the filter liner provided with the concentric inner and outer opposite water receiving ports with different diameters, the structure and the manufacture of the filter liner adopting the split water port are relatively simple.

When the embodiment is used in the two preposed filter liners in embodiment 1, the indication direction determined by the connection line of the group of filter liners corresponding to the water inlet and the water outlet of the preposed filter liner and the corresponding included angle between the connection line of the group of concentric inner and outer butt water inlets corresponding to the water inlet and the water outlet of the preposed filter liner and the connection line of the water inlet and the water outlet of the other group of concentric inner and outer butt water inlets are determined as the water inlet setting relation between the two filter liners: the included angle between the connecting lines of the two groups of filter liner abutting water gaps is smaller than 90 degrees and is regarded as parallel 'same-direction arrangement'; when the included angle between the connecting lines of the two groups of filter liner abutting water gaps is larger than 90 degrees, the filter liners are regarded as being in parallel reverse arrangement. On this basis, the special case of "vertical setting" in embodiment 1 is also applied to this embodiment.

When the embodiment is applied to the three preposed filter liners described in embodiments 2 to 8, on the basis of defining the technical problems to be solved, defining the filtering backflushing technical schemes of various types (water path structure principle), defining the mutual connection relationship among the components in the technical schemes, and on the basis of the water passing pipeline layout shown by the triangular structural layout of the three filter liners connected in series and the relevant basic drawings, the embodiment allows that "on the premise that the preposed engine base maintains the corresponding connection relationship of the original water passing pipeline and does not have pipeline crossing", and on the premise that the positions of the first, second and third preposed filter liners are determined and two groups of filter liner butt joint water gaps are adopted to be arranged as inner and outer butt joint water gaps with different diameters concentric with the preposed filter liners, when the other set of filter liner abutting joint water gap is set to be the separately abutting joint water gap structure corresponding to the water inlet and the water outlet separately arranged on the front filter liner, as long as the waterway connection structure of the water passing pipeline connecting the three filter liners in series and the water passing electric control valve is determined, and the arrangement (the position in the filter liners in series, and the connection line and the direction of the water gaps of the two sets of filter liner abutting joint water gaps) between the two sets of concentric inner and outer abutting joint water gaps with different diameters accords with the corresponding relation of the previous embodiment cited in the present embodiment, and the original integral pipeline layout and the approximate pipeline trend are maintained, the third set of filter liner abutting joint water gap is adopted as the third set of filter liner abutting joint water gap, and the water inlet and the water outlet corresponding to the front filter liner or the water inlet and the water outlet corresponding to the front filter liner are considered to accord with the corresponding relation in the pipeline layout of the previous embodiment cited in the present embodiment.

Based on the attached figure 13: 1. a water passing pipeline layout schematic diagram formed by changing a group of filter liner butt joint water gaps 11a and 11b corresponding to a water inlet and a water outlet of a first-stage filter liner 11 in the pipeline layout shown in fig. 13 into a group of separately arranged filter liner butt joint water gaps and connecting the filter liner butt joint water gaps with related pipelines is shown in fig. 14.

2. A water passing pipeline layout schematic diagram formed by changing a group of filter liner butt joint water gaps 12a and 12b corresponding to the water inlet and the water outlet of the secondary filter liner 12 in the pipeline layout shown in fig. 13 into a group of separately arranged filter liner butt joint water gaps and connecting the filter liner butt joint water gaps with related pipelines is shown in fig. 15.

3. A water passing pipeline layout schematic diagram formed by changing a group of filter liner butt joint water gaps 13a and 13b corresponding to a water inlet and a water outlet of a three-stage filter liner 13 in the pipeline layout shown in fig. 13 into a group of separately arranged filter liner butt joint water gaps and connecting the filter liner butt joint water gaps with related pipelines is shown in fig. 16.

4. On the basis of the pipeline layout shown in the attached figure 16, a group of outer and inner butt joint water gaps corresponding to the water inlet and the water outlet of the secondary filter liner are changed into inner and outer butt joint water gaps and connected with related pipelines, and a water passing pipeline layout schematic diagram formed by back flushing pipelines of the front butt joint water gap and the back butt joint water gap is arranged, and the structure shown in the attached figure 17 is adopted.

On this basis, the pipe layout shown in other figures represented by figures 11, 18 and 19 can also refer to the mode shown in figures 14 to 17, and the concentric inner and outer opposite water receiving ports with different diameters corresponding to the two water ports of the preposed filter container are changed into a group of separately arranged filter container opposite water receiving ports and connected with related pipes.

In addition, the second water outlet electric control valve 26 in the pipeline layout shown in fig. 18 and 19 can also be rotated 90 degrees clockwise and arranged in the same row with the first-stage water outlet electric control valve 25.

In addition, for the reverse osmosis water purifier, fig. 11 can also refer to fig. 19 to set a front pipeline and a rear pipeline butt joint water gap mode, and a back flushing pipeline 5 with two pipeline butt joint water gaps 5a and 5b is arranged, so that the back flushing pipeline 5 is used as a concentrate discharging pipeline of a reverse osmosis membrane filter liner to discharge concentrate, and then one pipeline and the plane position occupied by the pipeline are saved.

Example 10. On the basis of embodiments 1, 2, 3, 4, 5, 6, 7, 8 and 9, the front-end processor base is provided with corresponding internal thread structures corresponding to upward butt joint water gaps of the electric control valve for water passing for fixing the electric control valve for water passing in butt joint with the butt joint water gaps of the electric control valve for water passing; the water passing pipeline avoids the internal thread structure and a gap between the internal thread structure and a water passing electric control valve butt joint water gap, namely the water passing pipeline cannot penetrate through the internal thread structure and the gap between the internal thread structure and the water passing electric control valve butt joint water gap.

The embodiment can lead the water pipeline layout of the front-end processor base to be more compact and simpler, and the assembly is simpler and more convenient.

The water passing electric control valve is fixed on the front-end processor base and corresponding water gap butt joint is realized through the connection of the screw and the internal thread structure on the front-end processor base.

Example 11. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, a raw water backflushing channel is arranged on the front filter container: a first-stage water inlet electric control valve 20 and a first-stage backflushing water inlet electric control valve 21 which are communicated with each other at water inlet ends and a first-stage water outlet electric control valve 25 of which the water outlet end is connected with a backflushing pipeline are arranged; the first stage inlet valve 20 is connected in series in the inlet pipeline of the front filter container, the outlet end of the first stage backflushing inlet electric control valve 21 is connected with the outlet end of the front filter container and is positioned in front of the inlet electric control valve used for filtering the backflushing channel and behind the inlet electric control valve, such as the second stage inlet electric control valve 24 or the third stage inlet electric control valve 28 or the second and third stage inlet electric control valves 24 and 28. The water inlet end of the first-stage water outlet electric control valve 25 is connected with the first-stage water inlet electric control valve 20 and a pipeline between the front filter liners; a plurality of preposed filtering channels for filtering forward water of the filter container are formed by controlling and communicating the first-stage water inlet valve 20 and the water inlet electric control valve at the back and closing the backflushing water inlet electric control valve and the water outlet electric control valve; a raw water backflushing channel which reversely flows water in the front filter container and discharges water through the backflushing pipeline 5 is formed by controlling and closing the first-stage water inlet valve 20 and communicating the first-stage backflushing water inlet electric control valve 21 and the first-stage water outlet electric control valve 25. The tap water used for the back flushing at this time was raw water without filtration.

Usually, the first filter container 11 is arranged as a front filter container, and the rear filter container can be a second filter container 12, a third filter container 13, or a second and third filter containers 12 and 13.

In this embodiment, the front filter container is a primary filter container 11 when combined with embodiment 1. A raw water backflushing channel is arranged aiming at the primary filter container.

In this embodiment, in combination with embodiment 2, the front filter containers are primary and secondary filter containers 11 and 12. At this time, the independent backflushing channels arranged for the two front filter liners are both raw water backflushing channels. As shown in fig. 1, on the premise that the first-stage water inlet electronic control valve 20 is closed, the first-stage backflushing water inlet electronic control valve 21 and the first-stage water outlet electronic control valve 25 are conducted to form a raw water backflushing channel of the first-stage filter container 11; the second stage backflushing water inlet electronic control valve 22 and the second stage water outlet electronic control valve 26 are conducted to form a raw water backflushing channel of the second stage filter container 12. At this time, the water inlet end of the second stage backflushing water inlet electronic control valve 22 is communicated with the water inlet end of the first stage water inlet electronic control valve, so that a corresponding raw water backflushing channel is formed.

In this embodiment, when combined with embodiments 3, 4, 5, 6, 7, 8, 9 and 10, the front filter container is a primary filter container 11. At this time, the single backflush channel arranged for one front filter container is the raw water backflush channel. As shown in fig. 5, 10 and 20, on the premise that the first-stage water inlet electronic control valve 20 is closed, the first-stage backflushing water inlet electronic control valve 21 and the first-stage water outlet electronic control valve 25 are conducted to form a raw water backflushing channel of the first-stage filter cartridge 11.

Example 12. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, a post-filtration channel comprising a reverse osmosis membrane filter liner is also arranged; the water inlet end of the reverse osmosis membrane filter liner is connected with the tail end of the preposed filtering channel through an additional booster pump, the pure water port of the reverse osmosis membrane filter liner is connected with the water outlet pipeline, and the concentrated water discharge port of the reverse osmosis membrane filter liner is connected with the concentrated water discharge pipeline provided with a concentrated water discharge flow control device and an additional external water discharge port; the back flushing pipeline and a rear section pipeline of the concentrated water discharge pipeline (a pipeline connected with the water outlet end of the concentrated water discharge flow control device, the same below) share one pipeline, and the tail end of the back flushing pipeline is connected with an external water discharge outlet; the backflushing pipeline is characterized in that pipeline sections which are connected with the water outlet ends of the water outlet electric control valves and are respectively provided with backflushing pipeline butt joint water gaps 5a and 5b at two ends are connected in series in a rear section pipeline of the concentrated water discharging pipeline, or two pipeline sections which are respectively connected with the water outlet ends of the water outlet electric control valves and are respectively provided with two backflushing pipeline butt joint water gaps 5a and 5b are respectively connected in a rear section pipeline of the concentrated water discharging pipeline.

In this case, a front electrically controlled filtering backflushing system having a front and a rear backflushing pipes opposite to the water receiving port is provided for realizing certain specific functions or specific structures (not expanded by space), as shown in the schematic layout of the water flow pipe shown in fig. 13-17, 19 and 23. In related drawings, the front recoil pipeline and the rear recoil pipeline are in butt joint with the water ports 5a and 5b or are communicated through recoil pipelines or are communicated through pipelines with specific functions (such as concentrated water discharge pipelines connected with reverse osmosis membrane filter liners).

For the reverse osmosis water purifier, a concentrated water discharge pipeline which is provided with a front reverse flushing pipeline and a rear reverse flushing pipeline and is in butt joint with the water gaps 5a and 5b and is connected with the concentrated water discharge port of the R0 membrane filter liner can be connected with the same external water discharge port for discharging water.

For the reverse osmosis water purifier, a mode that two backflushing pipelines are arranged for backflushing pipelines of the water receiving port to drain water through the concentrated water discharging pipeline is adopted, so that a pipeline from the backflushing pipeline to the external water discharging port and a plane position occupied by the pipeline can be saved, a new path for arranging the pipelines of the concentrated water discharging pipeline of the reverse osmosis water purifier along the front-arranged electric control filtering backflushing system and a corresponding specific external water discharging port position are provided, and a new choice is provided for a combination scheme of arranging related pipelines in a limited plane size range and arranging external water outlets including the external water discharging port.

In this case, a combination of fig. 13 of embodiment 5 and embodiments 10 to 12 constitutes an exemplary embodiment of this case.

In each embodiment of the present disclosure, when the secondary filter container 12 uses granular activated carbon filter materials, the gaps between the filter materials are large and not fixed, and have no "pore size sieve" function, but have an adsorption function, and macroscopically, the secondary filter container is also regarded as having an "pore size sieve" function of filtering and retaining impurities. However, the surface of the granular active carbon filter material is easily wrapped by impurities such as colloid, silt, rust and the like with larger size in tap water to lose the original adsorption effect.

When the second-stage screen mesh type filter container is backflushed, the second-stage filter container is independently backflushed and cleaned from back to front by directly adopting tap water filtered by the first-stage filter container.

When backflushing the third-stage screen mesh type filter container, tap water filtered by the first-stage filter container is directly adopted to carry out independent backflushing cleaning to the third-stage filter container from back to front, and then the backflushing tap water is prevented from causing unnecessary loss through the granular activated carbon filter material. Meanwhile, the water passing electric control valve is saved (the water inlet electric control valve does not need to be arranged step by step) in a mode that the filter liners in the whole preposed filter channel are all provided with corresponding independent backflushing channels to form a 'full backflushing' double-channel preposed electric control filter backflushing system.

At the moment, as the 'screen mesh aperture' of the filter liner in the front-end filtering channel is gradually reduced (the filtering precision is gradually improved), water (reverse) is passed through a path (forward) which relatively selects the 'screen mesh aperture' of the filter material layer for backflushing water containing certain (larger-size) impurities, and a path (forward) which selects the 'screen mesh aperture' of the filter material layer to be smaller can meet larger 'water passing resistance', therefore, even if the third-stage water inlet electric control valve is switched on, as long as the third-stage water outlet electric control valve is switched off, the influence on the filtering backflushing effect of the second-stage filter liner is limited. Only when the water pressure at the water outlet end of the secondary filter container is higher and the subsequent water passing pipeline is unblocked to discharge water, the shunting phenomenon can occur to cause certain influence on the filtering backflushing effect of the secondary filter container.

The preferred mode is to set a single backflushing water path (without shunt) as much as possible, such as an electric control device closing a water inlet electric control valve behind a filtering backflushing channel of a front filter container or a water outlet valve of a water outlet pipeline or a booster pump (with water control function).

In this case, the front-end housing represents a housing portion corresponding to the front-end filter passage. The front and rear positions are combined with the three front filter containers placed in the middle of the other front filter container to form a triangular structural layout, and the three front filter containers can be equilateral triangles, isosceles triangles, right-angle triangles and other structures of non-special triangles. The pipeline layout shown in each figure is a rigid pipeline layout arranged on the front engine base.

In this case, a normally closed water passing electrically controlled valve is taken as an example for description, and the water passing electrically controlled valve not shown in the drawings is in a closed state. The scheme is also suitable for a normally-open water passing electric control valve. The above embodiments can also use a normally open type water passing electric control valve, and the electric control device controls the on or off.

Claims (10)

1. A pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system is provided with the front-end machine seat with a water passing pipeline of a downward filter liner butt joint water gap; the forward water passing in the front filter container and the backward filter container forms a forward filter channel of two-stage forward filter containers, and the forward water passing in the back filter container is characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water gap for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water outlet end of the water outlet valve is connected with a backflushing pipeline; the water inlet electric control valve is connected in series in a water passing pipeline between the front filter liner and the rear filter liner; the backflushing water inlet electric control valve is connected with the water outlet ends of the front filter container and the rear filter container level filter container respectively; the water inlet end of the water outlet electric control valve is connected in a pipeline between the water inlet electric control valve and the rear filter liner; a filtering backflushing channel which is used for realizing forward water passing of the front filtering container but reversely water passing of the rear filtering container and water outlet through a backflushing pipeline is formed by controlling forward water passing of the front filtering container, conducting the backflushing water inlet electric control valve and the water outlet electric control valve and closing the water inlet electric control valve; two preposed filter containers which are sequentially connected in series and connected with a relevant water passing electric control valve are arranged in a linear layout and are arranged below a preposed machine base, two groups of corresponding filter container butt joint water gaps are arranged on the preposed machine base and are butted with respective water inlets and water outlets of the two preposed filter containers, and relevant pipeline layout paths are determined, and at least one group of filter container butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically butted with relevant water gaps of the preposed filter containers; two groups of filter liners corresponding to the water inlets and the water outlets of the two preposed filter liners are in butt joint with the water outlets and are arranged in the same direction or are vertically arranged or are reversely arranged.

2. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing of the first and second filter containers as the front filter container and the third filter container as the back filter container form the forward filtering channels of the three forward filter containers, and the forward filtering channels are characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water inlet for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water outlet end of the water outlet valve is connected with a third-stage water outlet electric control valve provided with a backflushing pipeline; the third-stage water inlet electric control valve is connected in series in a pipeline between the second-stage filter liner and the third-stage filter liner, the third-stage backflushing water inlet electric control valve is connected with the water outlet ends of the second-stage filter liner and the third-stage filter liner, the water inlet end of the third-stage water outlet electric control valve is positioned in front of the third-stage water inlet electric control valve, and the water inlet end of the third-stage water outlet electric control valve is connected in a pipeline between the third-stage water inlet electric control valve and the third-stage filter liner; the first and second filter containers positively pass water, the third stage backflushing water inlet electric control valve and the third stage water outlet electric control valve are conducted, and the third stage water inlet electric control valve is closed to form a filtering backflushing channel for the first and second filter containers positively passing water, but the third filter container reversely passing water and discharging water through a backflushing pipeline; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, three groups of corresponding filter liner butt joint water gaps are arranged on the preposed engine base and are in butt joint with the respective water inlet and the respective water outlet of the three filter liners, and related pipeline layout paths are determined, and at least two groups of filter liner butt joint water gaps are concentric inner and outer butt joint water gaps with different diameters and are vertically butted with the related water gaps of the preposed filter liners: the third filter container is arranged at the rear position or the middle position or the front position, wherein the first and second filter containers are correspondingly arranged at the front and middle positions for the third filter container arranged at the rear position; for the third-stage filter container, the first and second filter containers are correspondingly arranged at the back and front positions; the third filter container is arranged at the front position, and the first filter container and the second filter container are correspondingly arranged at the back position and the middle position.

3. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing of the first-stage filter container as the front filter container and the second-stage and third-stage filter containers as the rear filter container forms the forward filtering channels of the three forward filter containers by conduction, and the forward filtering channels are characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water inlet for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water-passing electric control valve is divided into a second and a third-stage water-inlet electric control valve and a second and a third-stage backflushing water-inlet electric control valve according to the application, and the water outlet end of the second and the third-stage water-outlet electric control valve is connected with a backflushing pipeline; the second and third stage water inlet electric control valves are respectively connected in series in the pipelines between the first and second stage filter liners and the second and third stage filter liners, the second and third stage backflushing water inlet electric control valves are respectively connected with the respective water outlet ends of the first and second stage filter liners and the respective water inlet ends of the second and third stage backflushing water inlet electric control valves are respectively positioned in front of the progressive water inlet electric control valve, and the water inlet ends of the second and third stage water outlet electric control valves are respectively connected in the pipelines between the second and third stage water inlet electric control valves and the progressive filter liner; a first-stage filter liner forward water passing channel is formed by controlling a first-stage filter liner forward water passing valve, or a second-stage backflushing water inlet electric control valve and a second-stage water outlet electric control valve are communicated, and the second-stage water inlet electric control valve is closed to form a first-stage filter liner forward water passing channel, but a second-stage filter liner backward water passing channel, and a backflushing pipeline water outlet channel is formed by communicating a second-stage backflushing water inlet electric control valve, a third-stage water outlet electric control valve and closing a third-stage water inlet electric control valve, or a first-stage filter liner forward water passing channel, but a third-stage filter liner backward water passing channel, and a backflushing pipeline water outlet channel are formed by communicating a second-stage water inlet electric control valve, a third-stage backflushing water inlet electric control valve, closing a second-stage backflushing water inlet electric control valve and a third-stage water outlet electric control valve; the three preposed filter liners which are provided with a front preposed filter liner and a rear preposed filter liner along the width of the preposed machine seat and are combined with another adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed machine seat and respectively correspond to the front, middle and rear positions, three groups of corresponding filter liner butt joint water openings are arranged on the preposed machine seat and are butted with respective water inlets and water outlets of the three filter liners, and related pipeline laying paths are determined, and at least two groups of filter liner butt joint water openings are concentric inner and outer butt joint water openings with different diameters and are vertically butted with related water openings of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions respectively.

4. The method for laying pipelines of the front-mounted machine seat of the water purifier with the front-mounted electric control filtering backflushing system according to claim 3, wherein the three-stage filter container is arranged at the front position, and the corresponding first-stage filter container and second-stage filter container are arranged at the middle position and the rear position or are arranged at the rear position and the middle position, wherein for the arrangement of the first-stage filter container and the second-stage filter container at the middle position and the rear position, the filter container butt joint water openings corresponding to the water inlet and the water outlet of the first-stage filter container and the second-stage filter container are arranged in the same direction, and the filter container butt joint water openings corresponding to the water inlet and the water outlet of the third-stage filter container are arranged in the opposite direction; and for the first and second filter containers, the filter containers corresponding to the water inlets and the water outlets of the first and third filter containers are arranged in the same direction, and the filter containers corresponding to the water inlets and the water outlets of the second filter containers are arranged in the opposite direction.

5. A water purifier preposed machine seat pipeline layout method with a preposed electric control filtering back-flushing system is provided with a preposed machine seat with a downward filter liner butt joint water gap water passing pipeline; the forward water passing of the first-stage filter container as the front filter container and the second-stage and third-stage filter containers as the rear filter container forms the forward filtering channels of the three forward filter containers by conduction, and the forward filtering channels are characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water inlet for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water-passing electric control valve is divided into a second-stage water inlet electric control valve, a second-stage backflushing water inlet electric control valve and a third-stage backflushing water inlet electric control valve according to the application, and the second-stage water outlet electric control valve and the third-stage water outlet electric control valve are connected with a backflushing pipeline; the second stage water inlet electric control valve is connected in series in a pipeline between the first stage filter liner and the second stage filter liner, the second stage backflushing water inlet electric control valve and the third stage backflushing water inlet electric control valve are respectively connected with the water outlet ends of the first stage filter liner and the second stage filter liner and the water outlet ends of the third stage filter liner and the first stage filter liner, the water inlet ends of the two backflushing water inlet electric control valves are positioned in front of the second stage water inlet electric control valve, and the water inlet ends of the second stage water outlet electric control valve and the third stage water outlet electric control valve are respectively connected in pipelines between the second stage water inlet electric control valve and the second stage filter liner as well as the second stage filter liner and the third stage filter liner; a filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the second-stage filter container and the water outlet of the backflushing pipeline is formed by controlling the forward water passing of the first-stage filter container and switching on the second-stage backflushing water inlet electric control valve and the second-stage water outlet electric control valve and switching off the second-stage water inlet electric control valve, or a filtering backflushing channel for the forward water passing of the first-stage filter container but the reverse water passing of the third-stage filter container and the water outlet of the backflushing pipeline is formed by switching on the third-stage backflushing water inlet electric control valve and the third-stage water outlet electric control valve and switching off the second-stage water inlet electric control valve and the second-stage backflushing water inlet electric control valve; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water openings are arranged on the preposed engine base and are butted with respective water inlets and water outlets of the three filter liners to determine related pipeline layout paths, and at least two groups of filter liner butt joint water openings are concentric inner water inlets and outer water inlets with different diameters and are vertically butted with the related water openings of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions respectively.

6. A pipeline layout method for a front-end machine seat of a water purifier with a front-end electric control filtering back-flushing system is provided with the front-end machine seat with a water passing pipeline of a downward filter liner butt joint water gap; the forward water passing of the first-stage filter container as the front filter container and the second-stage and third-stage filter containers as the rear filter container forms the forward filtering channels of the three forward filter containers by conduction, and the forward filtering channels are characterized in that an upward water passing electric control valve is also arranged to be in butt joint with a water inlet for connecting a related water passing pipeline with a water inlet and a water outlet of an additionally arranged water passing electric control valve; the water-passing electric control valve is divided into a second-stage water inlet electric control valve, a second-stage backflushing water inlet electric control valve and a third-stage backflushing water inlet electric control valve according to the application, and the second-stage water outlet electric control valve and the third-stage water outlet electric control valve are connected with a backflushing pipeline; the second stage water inlet electric control valve is connected in series in a pipeline between the first stage filter liner and the second stage filter liner, the third stage backflushing water inlet electric control valve is connected with the water outlet ends of the first stage filter liner and the third stage filter liner respectively, the water inlet end of the second stage backflushing water inlet electric control valve is positioned in front of the second stage water inlet electric control valve, the second stage backflushing water inlet electric control valve is connected with the water outlet ends of the third stage backflushing water inlet electric control valve and the second stage filter liner respectively, and the water inlet ends of the second stage water outlet electric control valve and the third stage water outlet electric control valve are connected in pipelines between the second stage water inlet electric control valve and the second stage filter liner and between the second stage filter liner and the third stage filter liner respectively; a filtering backflushing channel for forming the forward water flow of the primary filter container but the reverse water flow of the tertiary filter container and discharging water from a backflushing pipeline is formed by controlling the forward water flow of the primary filter container and switching on the second and third backflushing water inlet electric control valves and the second level water outlet electric control valve and switching off the second level water inlet electric control valve and the third level water outlet electric control valve, and switching off the second level water inlet electric control valve and the second level backflushing water inlet electric control valve, or a filtering backflushing channel for forming the forward water flow of the primary filter container but the reverse water flow of the tertiary filter container and discharging water from the backflushing pipeline is formed by switching on the third level backflushing water inlet electric control valve and the second level water outlet electric control valve and switching off the second level water inlet electric control valve and the second level backflushing water inlet electric control valve; the three preposed filter liners which are arranged along the width of the preposed engine base and are combined with the other adjacent preposed filter liner are arranged in a triangular structure and are arranged below the preposed engine base and respectively correspond to the front position, the middle position and the rear position, and three groups of corresponding filter liner butt joint water openings are arranged on the preposed engine base and are butted with respective water inlets and water outlets of the three filter liners to determine related pipeline layout paths, and at least two groups of filter liner butt joint water openings are concentric inner water inlets and outer water inlets with different diameters and are vertically butted with the related water openings of the preposed filter liners: the third filter container is arranged at the middle position or the front position, wherein the first filter container and the second filter container are correspondingly arranged at the back position and the front position for the third filter container; for the three-stage filter container, the corresponding first and second filter containers are arranged at the front position and the middle and rear positions respectively.

7. The method for laying pipelines of the front-mounted machine seat of the water purifier with the front-mounted electric control filtering backflushing system according to claim 5 or 6, wherein the three stages of filter liners are arranged at the front position, the corresponding first and second filter liners are arranged at the middle and rear positions or the rear and middle positions, and the filter liners corresponding to the water inlets and the water outlets of the three filter liners are arranged in the same direction with respect to the water outlets.

8. The method for arranging the pipelines of the front-end processor base of the water purifier with the front-end electric control filtering backflushing system according to claim 1, 2, 3, 4, 5 or 6, characterized in that the front-end processor base changes the positions of one or more groups of water passing electric control valves corresponding to a certain water passing electric control valve for the water passing ports by rotation on the premise of keeping the corresponding connection relationship of the original water passing pipelines and no pipeline crossing, so as to form a derivative pipeline layout of the original water passing pipeline layout; the derived pipeline layout is formed by rotating one or more groups of water passing electric control valve butt joint water gaps corresponding to one group of filter liner butt joint water gaps to drive corresponding water passing pipelines to change, or by rotating one group of filter liner butt joint water gaps, keeping a relatively fixed structural relationship between the group of filter liner butt joint water gaps and the related water passing electric control valve butt joint water gaps, and driving the corresponding water passing pipelines to change.

9. The method for laying pipelines of the front-end machine base of the water purifier with the front-end electric control filtering backflushing system according to claim 1, 2, 3, 5 or 6, wherein the group of filter container butt joint water outlets are inlet and outlet butt joint water outlets which are separately arranged at two positions and are in butt joint with the inlet and outlet of the front-end filter container with corresponding structural modes.

10. The method for laying pipelines of the front-end seat of the water purifier with the front-end electric control filtering backflushing system according to claim 1, 2, 3, 4, 5 or 6, which is characterized in that a rear-end filtering channel comprising a reverse osmosis membrane filter liner is further arranged; the water inlet end of the reverse osmosis membrane filter liner is connected with the tail end of the preposed filtering channel through an additional booster pump, the pure water port of the reverse osmosis membrane filter liner is connected with the water outlet pipeline, and the concentrated water discharge port of the reverse osmosis membrane filter liner is connected with the concentrated water discharge pipeline provided with a concentrated water discharge flow control device and an additional external water discharge port; the back flushing pipeline and the back section pipeline of the concentrated water discharging pipeline share one pipeline, and the tail end of the back flushing pipeline is connected with an external water discharging outlet; the backflushing pipeline is connected in series with the pipeline section which is connected with the water outlet end of each water outlet electric control valve and is provided with backflushing pipeline butt water inlets at two ends, or is connected in the rear pipeline of the concentrated water discharging pipeline respectively with two pipeline sections which are connected with the water outlet end of each water outlet electric control valve and are provided with two backflushing pipeline butt water inlets.

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