CN115611327A - Method for laying upper-layer rigid pipeline of water purifier with double-layer rigid pipeline structure - Google Patents

Abstract

The invention relates to the water treatment industry, in particular to the aspects of deep filtration and purification of drinking water. The invention discloses a method for arranging an upper rigid pipeline of a water purifier with a double-layer rigid pipeline structure. A vertical undercut structure is arranged in the middle of the rear side wall of the lower filter liner bin, a reverse osmosis membrane filter liner is arranged in front of the lower filter liner bin, a front filter liner and a rear functional filter liner are respectively arranged on two sides of the lower filter liner bin, and then the bin body part structure for placing each filter liner is divided into a front side corresponding to the front filter liner and a rear side corresponding to the rear functional filter liner along the length direction at the position of the axis of the bin body; the corresponding upper module and the upper layer related pipeline are also correspondingly divided into a front side and a rear side. The back section of the concentrated water discharge pipeline connected with the water outlet end of the concentrated water discharge flow control device is distributed along the front side and connected with an external water discharge outlet; the external water inlet and the external water discharge outlet are respectively arranged in a remote mode at a position far away from and near the external pure water port or in a close mode at a position near and far away from the external pure water port.

Description

Method for laying upper-layer rigid pipeline of water purifier with double-layer rigid pipeline structure

Technical Field

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

Background

The materials of the Chinese patent application 201910392598.6 and the like disclose that the related content of the water purifier with the electric control reverse punching switching device overcomes the defect of the manual control reverse punching switching device. However, because the water purifiers all adopt raw water containing more impurities with larger sizes, 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 liner at the later position in the front filtering channel, and are positioned at the later position in the front filtering channel, and originally, the impurities can be intercepted by the screen type filter liner at the front under the filtering mode and cannot reach the position, so that the backflushing back to the filtering mode can cause more serious blockage to the filter liner filter material layer with smaller screen pore size at the back. And for the granular activated carbon filter container serving as a non-primary filter container and the filter container with a smaller filter pore diameter, impurities such as colloid, silt, rust and the like are easy to block a filter material layer or wrap the surface of the granular activated carbon filter material in a raw water backflushing mode, so that the adsorption effect of the filter material is obviously reduced or even loses efficacy. Secondly, as the only wading semi-finished product in the household appliance products, the maintenance service volume of the product far exceeds that of other household appliance products. The conventional structural arrangement of existing machines prevents non-factory maintenance personnel from inspecting and maintaining the machines. Although the maintenance operation of the machine is relatively simple, mainly damaged parts are replaced, the user lacks knowledge about the water purifier, the technology of self-disassembling the parts and the parts cannot be arranged at the position easy to disassemble, so that the door-to-door service is needed, the workload of maintenance service personnel is increased, the related expense is increased, and the related matters surrounding the door-to-door service are very troublesome. Especially, the remote users who purchase the telephone through the network telephone are difficult to obtain timely and good service. Third, current purifier that sets up reverse osmosis membrane filter courage is at the long-time in-process that stops use, the water in filter courage and the connecting line is in the state of not flowing for a long time, breed very easily moss and floating algae and other plankton lead to appearing serious "secondary pollution", the smelly water phenomenon appears even, seriously influence the follow-up use situation of machine, even if changed whole filter courage afterwards also can be difficult to ensure the purifier to resume the water treatment ability and the effect that originally had because of the water route has been polluted, and make the user produce uneasy or even fear to the machine and feel. Fourthly, although the water purifier only relates to a plurality of water passing control components, and the damage of the components has a relatively slow abnormal process under most conditions, with the development of related monitoring technology and communication technology, a new mode of regular 'physical examination' and advanced prejudgment of the water purifier becomes possible, so that a monitoring device and a corresponding automatic detection technology are urgently needed to be arranged so as to track and monitor the water passing control components, and new components are automatically maintained and replaced by mail purchasing for manufacturers according to corresponding prompts. Fifth, water purifiers have been lacking in filter cartridge status and life monitoring techniques and devices for use environments. In addition, in the process of designing the structure of the water purifier, six structural design problems that the mutual interweaving influence needs to be considered simultaneously in a limited space (500 mm × 200mm × 460 mm) are always faced: 1. the filter liners with the diameters of phi 70-phi 80 mm and the lengths of 300 mm, which are arranged in the middle core area of the machine, are convenient to assemble and disassemble and the moving space positions need to be arranged at the main positions of the machine so as to be convenient for users to replace; 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 of the water passing control part including the booster pump with the diameter of 100 mm and the length of 200mm is connected with the pipe arrangement of the matched pipeline, and the corresponding anti-leakage and anti-aging treatment is carried out; 4. although the rigid pipeline has the advantages of easiness in injection molding, high assembly efficiency, difficulty in water leakage and tidiness in wiring, the positions of the electric control valves of the water passing devices are determined, and the pipeline arrangement circuit is selected to avoid mutual crossing (the integrated injection molding can not be carried out), especially on the premise of meeting the overall structure layout and facilitating assembly, how to fully utilize the plane size of the base and select the more appropriate pipeline arrangement circuit. 5. A normal-closed purified water pipeline mode double-outlet reverse osmosis type purified water outlet detection scheme is adopted. 6. The machine has single function and is inconvenient to select and use. In order to solve the technical problems, more water passing control parts and corresponding pipelines need to be additionally arranged, and an ideal technical means is to arrange a rigid pipeline layer which has the advantages of easiness in injection molding, simplicity and high efficiency in assembly of the pipelines and the water passing control parts, difficulty in water leakage, tidiness in wiring, convenience in arrangement of a plurality of parts, capability of meeting multifunctional configuration and maintenance requirements and the like to form an integrated waterway structure. However, it is very difficult to determine the positions of the water control components on the premise of solving the above technical problems, and select a proper path to lay a large number of rigid pipelines and avoid the crossing of the pipelines, especially to make full use of the limited plane size of the base on the premise of satisfying the above requirements of overall structure layout and convenient assembly, and to design an overall pipe layout scheme according to whether the surrounding pipeline layout environment can satisfy the requirements of multiple aspects of machine filtration, back flushing and the like, and then to select a more suitable pipeline layout structure. The defects and shortcomings cause that the original extremely complex water purifier structure is more difficult to set, and the updating of the water purifier product is directly influenced.

Disclosure of Invention

The invention mainly solves the technical problem of providing a simple and practical method for arranging an upper rigid pipeline of a water purifier with a double-layer rigid pipeline structure, so as to overcome the defects and shortcomings.

A layout method of upper layer rigid pipeline of water purifier with double-layer rigid pipeline structure is provided, which is a double-layer rigid pipeline structure composed of a lower filter liner bin internally provided with a filter liner and a booster pump and provided with a bottom layer pipeline and an upper module matched with the lower filter liner bin and provided with an upper layer related pipeline; the double-layer rigid pipeline structure is sequentially connected with 1-2 preposed filter liners, reverse osmosis membrane filter liners and water inlets and water outlets of postposition functional filter liners in series through additional water ports to form a filter channel, wherein the part connected with the preposed filter liners in series is the preposed filter channel; the preposed filtering channel is connected with a preposed water inlet pipeline, an external water inlet and a preposed water outlet pipeline with a downward water inlet respectively from head to tail, and is connected with a reverse osmosis membrane filter liner through a booster pump; a vertical undercut structure is arranged in the middle of the rear side wall of the lower filter liner bin, a reverse osmosis membrane filter liner is arranged in front of the vertical undercut structure, a front filter liner and a rear functional filter liner are respectively arranged on two sides of the reverse osmosis membrane filter liner, and then a bin body part structure for placing each filter liner is divided into a front side corresponding to the front filter liner and a rear side corresponding to the rear functional filter liner along the length direction at the position of the axis of the reverse osmosis membrane filter liner; the relevant pipeline of corresponding overhead module and upper strata also correspondingly divide into leading side and rearmounted side to lay the relevant pipeline of upper strata in the top that corresponds each filter bag, and the top that corresponds vertical undercut structure sets up three vertical external mouth of a river and corresponding connecting line: the external water inlet and the external water discharge outlet which are arranged at or close to the front side, and the external pure water inlet which is arranged at or close to the rear side, and the front end of the front filtering channel which corresponds to the upper part of the front filtering liner is connected with the external water inlet; the reverse osmosis membrane filter liner is provided with an upward pure water port and a concentrated water discharge port which are vertically butted with a downward butting water port of an upper layer related pipeline positioned on the upper module; the preposed water outlet pipeline is in butt joint with an upward water outlet connected with the water inlet end of the booster pump through a downward water outlet; the water outlet end of the booster pump is connected with a downward water inlet of the reverse osmosis membrane filter liner through a bottom pipeline; in the upper layer related pipeline, a pure water butt joint water gap and a pure water pipeline which are butt joint with the pure water gap are arranged on the rear side, are butt joint with an upward water gap of the rear functional filter liner through a downward water gap, and are connected with an external pure water gap through a water outlet pipeline of the rear functional filter liner; the concentrated water discharge butt joint water gap butted with the concentrated water discharge water gap is arranged at the front side, and a concentrated water discharge pipeline communicated with the concentrated water discharge butt joint water gap is connected with a concentrated water discharge flow control device arranged in front of the butt joint water gap; the external water inlet and the external water discharge outlet are respectively arranged in a remote mode at a position far away from and near the external pure water outlet or in a close mode at a position near to and far from the external pure water outlet, wherein for the remote mode, the rear section of the concentrated water discharge pipeline or the external water discharge outlet is connected across the front water discharge pipeline or the external water discharge outlet is connected around the front filtering channel and the outer side of the external water inlet; for the proximity mode, the rear section of the concentrated water discharge pipeline is connected with an external water discharge outlet around the outer side of the front filtering channel.

The rear section of the concentrated water discharge pipeline and the front water outlet pipeline in the remote connection mode mutually span through an n-type pipeline spanning device which is additionally arranged and fixed on the upper module: the upper module is provided with two vertical crossing butt joint water gaps at the rear section of the concentrated water discharge pipeline and two sides of one of the two pipelines of the front water outlet pipeline, and the two vertical crossing butt joint water gaps are butted with the two vertical water gaps of the n-type pipeline crossing device and are fixedly connected with each other by a fastening standard; the n-shaped pipeline crossing device is connected in series in the preposed water outlet pipeline, and the rear section of the concentrated water discharge pipeline passes through a rigid pipeline arranged between crossing butt joint water gaps which are respectively butted with two vertical water gaps of the corresponding n-shaped pipeline crossing device and is connected with an external water discharge port, or is connected in series in the rear section of the concentrated water discharge pipeline and is connected with the water inlet end of the booster pump by the preposed water outlet pipeline arranged between crossing butt joint water gaps which are respectively butted with two vertical water gaps of the corresponding n-shaped pipeline crossing device.

A backwater reuse system with an inlet cavity electric control valve, a concentrated water discharge cavity, a backwater electric control valve and a discharge electric control valve is also arranged; the lower filter liner bin is a double-cavity structure formed by respectively arranging a booster pump and a dry cavity structure and a wet cavity structure for discharging concentrated water in a separated and connected mode; the water outlet end of the water inlet pipe is communicated with the water inlet electric control valve and the water outlet electric control valve of the wet cavity structure below or is respectively arranged at two sides of the concentrated water discharge flow control device or is arranged between the concentrated water discharge flow control device and the front filter liner, the water inlet ends of the two electric control valves are connected with the rear section of the concentrated water discharge pipeline, the water outlet end of the water outlet electric control valve is connected with an external water discharge outlet, and the water outlet end of the water return electric control valve arranged in the dry cavity structure is connected with the water inlet end of the booster pump; the concentration discharge water cavity is of a single wet cavity structure for storing and discharging concentration water or a wet cavity structure for storing and discharging concentration water and internally provided with a filter liner.

The discharge electric control valve is arranged at a position between the external discharge water outlet and the prepositive water outlet pipeline.

A water changing pipeline connected in series with the water changing electric control valve is also arranged; arrange the water electrovalve or the pure water that trades on the overhead module in and trade water electrovalve or preceding water electrovalve of replacement, wherein trade water electrovalve to the pure water, or be located the rearmounted side or be located the position department that corresponds the trunk cavity structure, corresponding pure water trades water pipeline water inlet end and connects pure water pipeline: or the water inlet end of the post-positioned functional filter liner is connected, or the water outlet end of the post-positioned functional filter liner is connected, and the water outlet end of the pure water exchange pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external drainage outlet or connected with the external drainage outlet through an additional drainage electric control valve; for the front replacement water electric control valve, or the front replacement water electric control valve is positioned on the front side or the rear side or the position corresponding to the dry cavity structure, the water inlet end of the corresponding front replacement water pipeline is connected with a front water outlet pipeline, and the water outlet end of the front replacement water pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external drainage outlet or connected with the external drainage outlet through an additional drainage electric control valve.

An external water purifying port is also arranged; the external pure water port is adjacent to the external pure water port, or is arranged at the position on the outer side of the external pure water port and far away from the front side, or is arranged at the position between the external pure water port and the external water inlet and the external water discharge port; this external water purification mouth of a river or through setting up the pipeline at the downward mouth of a river butt joint that makes progress that the leading outlet pipe way that the pipeline and the booster pump intake end of the mouth of a river set up of the downward mouth of a river set up, or through the pipeline that sets up the downward mouth of a river and the booster pump outlet end butt joint that makes progress that leading outlet pipe way established in addition is connected, increases a water purification pipeline that is used for the washing then and had both satisfied big water yield washing water demand, avoids the higher reverse osmosis membrane filter element excess loss of filter fineness again.

The device is also provided with a double-channel single-layer rigid pipeline system which is formed by controlling the relevant electric control valves to open or close the relevant water channels; the double-channel single-layer rigid pipeline system is provided with a water inlet electric control valve connected in series in a water inlet pipeline of the related prepositive filter liner, a backflushing water inlet electric control valve of which the water outlet end is connected with the water outlet end of the related prepositive filter liner, and a water outlet electric control valve of which the water inlet end is connected with the water inlet pipeline of the related prepositive filter liner and is arranged behind the water inlet electric control valve and the water outlet end is connected with an external water outlet through a backflushing pipeline; the waterway control mode of the double-channel single-layer rigid pipeline system is a filtering mode for controlling and communicating a water inlet electric control valve and closing a backflushing water inlet electric control valve and a water outlet electric control valve and then controlling and communicating the preposed filter containers to reversely pass water and controlling and communicating the relevant backflushing water inlet electric control valve and water outlet electric control valve and closing the relevant water inlet electric control valve to control the single preposed filter container to reversely pass water and controlling and communicating the water outlet electric control valve of the connecting belt of the water inlet end of the preposed filter container to be backflushed and the water outlet end of the connecting belt of the backflushing water inlet electric control valve to be connected with the water outlet end of the backflushing water inlet electric control valve and communicating the water inlet end of the backflushing water inlet electric control valve with the water inlet end of the water inlet electric control valve and closing the relevant water inlet electric control valve to form a backflushing mode of the backflushing water reverse passing filter container, or the forward water passing of the preposed water inlet pipeline and the preposed filter container in the front is controlled, the water inlet end and the water outlet end of the second preposed filter container to be backflushed are switched and conducted, the water inlet end and the water outlet end of the second backflush water inlet electric control valve of the second preposed filter container to be backflushed are respectively connected with the water inlet end of the second-stage water outlet electric control valve of the backflush pipeline, the second-stage water inlet electric control valve additionally arranged in the pipeline between the preposed filter container and the postpositive filter container is closed, and the water inlet end of the second-stage backflush water inlet electric control valve is connected with the water inlet end of the second-stage water inlet electric control valve to form a filtering backflush mode of forward water passing of the preposed filter container and reverse water passing of the postpositive prefilt filter container.

The front filtering channel is provided with three front filtering liners; along the lower preposed filter container storehouse width set up two preceding filter containers in front and back and with another adjacent three preposed filter containers of the preposed filter container combination be triangle structure overall arrangement and place in the below of overhead module: the three-stage preposed filter container is arranged at the front position or the middle position, wherein for the mode that the three-stage preposed filter container is arranged at the front position, the corresponding first-stage preposed filter container and the second-stage preposed filter container are respectively arranged at the middle position and the rear position; for the mode that the three-stage prepositive filter liner is arranged at the middle position, the corresponding first-stage prepositive filter liner and the second-stage prepositive filter liner are respectively arranged at the rear position and the front position; the upper layer related pipeline is provided with corresponding filter liner butt joint water gaps which are in butt joint with respective water inlets and water outlets of the three filter liners, and related pipeline layout paths are determined, and two butt joint water gaps of one group of filter liner butt joint water gaps are coaxial butt joint with the water inlets and the water outlets of the front filter liner which are provided with corresponding structural modes, or are split joint water gaps which are arranged at two positions and are provided with the water inlets and the water outlets of the corresponding structural modes; the double-channel single-layer rigid pipeline system corresponding to the three preposed filter liners is a filtering mode corresponding to the three preposed filter liners for sequentially passing water in a forward direction, or a raw water backflushing mode corresponding to the three preposed filter liners for backflushing independently, or a filtering backflushing mode corresponding to forward water passing of a first-stage preposed filter liner in the front and reverse water passing of a second-stage preposed filter liner or a third-stage preposed filter liner in the rear.

The back flushing pipeline and the rear section 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 in the rear section of the concentrated water discharge pipeline, or two pipeline sections which are connected with the water outlet ends of the water outlet electric control valves and are provided with backflushing pipeline butt water ports at two ends respectively, or the two pipeline sections which are connected with the water outlet ends of the water outlet electric control valves and are provided with two backflushing pipeline butt water ports are connected in the rear section of the concentrated water discharge pipeline respectively.

A water outlet detection device is also arranged; the pure water detection device is arranged in a pure water pipeline connecting a pure water butt joint water gap and an external pure water gap to form a pure water detection device, or is arranged in a pipeline between a preposed water outlet pipeline and an additionally arranged external pure water gap to form a pure water detection device, or is arranged in a pipeline connecting the rear section of a concentrated water discharge pipeline and an external water discharge port to form a concentrated water discharge detection device, wherein the pure water detection device is arranged in the pure water pipeline in front of the preposed water outlet pipeline or in the pure water pipeline behind the preposed water outlet pipeline.

Compared with the existing method for laying the rigid pipeline of the water purifier, the method has the following advantages: the rigid pipeline layout is simplified and saved, the structure is compact, the corresponding pipeline open groove can be subjected to integrated injection molding, more water passing control parts and related connecting pipelines are saved, a new choice is provided for the related pipeline layout and the external water gap layout combination scheme including an external water discharging and discharging outlet, the layout requirements of miniaturization and multifunction of a machine on the upper related pipeline are met, then in the limited plane size range on the upper module, the pipeline layout obtained through screening optimization meets the requirements of the added pure water and purified water detection device and a concentrated water discharging detection device and related pipeline layout, the ideal requirements of machine waterway structure setting and the control of each water passing control part, dynamic monitoring of each filter liner, the requirement of double-outlet reverse osmosis type purified water outlet detection in a normally closed pipeline mode are met, and a good foundation is laid for user self maintenance, remote detection of the machine, water changing and cleaning and back flushing monitoring.

Drawings

FIG. 1 is a schematic diagram of an upper-layer pipeline structure of a four-external-connection water gap and five filter liners in a remote connection mode, a preposed water outlet pipeline with a single downward butt-joint water gap and a pure water detection device, a double-channel single-layer rigid pipeline system with a filtering backflushing mode, a double-channel single-layer rigid pipeline system with a concentrated water discharge flow control device, a cavity electric control valve, a preposed discharge electric control valve, a concentrated water discharge detection device, a pure water pipeline with the pure water detection device, a pure water change electric control valve, a pure water change electric control valve, a double-interface backflushing pipeline layout mode, and an upper-layer module with a third-stage preposed filter liner in a preposed position mode, a through hole structure and a swing shaft seat fastening structure.

FIG. 2 is a schematic diagram of the upper pipeline structure of the external water gap and filter liner structure and position shown in FIG. 1, which is provided with a preposed water outlet pipeline with two downward butt water inlets and a water purification detection device, a double-channel single-layer rigid pipeline system with a filtering backflushing mode, a double-channel single-layer rigid pipeline system with a concentrated water discharge flow control device, a cavity inlet electric control valve, a preposed discharge electric control valve, a concentrated water discharge pipeline with a concentrated water discharge detection device, a pure water pipeline with a pure water detection device, a pure water change electric control valve, a water purification water change electric control valve, a double-interface backflushing pipeline layout mode, and an upper module of a through hole structure and a swing shaft seat fastening structure.

Fig. 3 is a water path switching schematic diagram of a raw water backflushing mode which is set for three preposed filter liners and is used for replacing the double-channel single-layer rigid pipeline system with the raw water and filter backflushing modes shown in fig. 1 or fig. 2.

Fig. 4-6 are schematic diagrams of three pipeline layout structures of a double-channel single-layer rigid pipeline system adopting a mode of arranging a third-stage prepositive filter liner at the front position, arranging a first-stage prepositive filter liner and a second-stage prepositive filter liner at the middle position and the rear position respectively, arranging concentric inner and outer butt water ports with different diameters and arranging front and rear double-interface backflushing pipelines on the basis of the waterway structure adopting the raw water backflushing mode shown in fig. 3.

FIG. 7 is a first water path switching schematic diagram for the dual-channel single-layer rigid pipeline system with the primary raw water backflushing mode, the secondary filtering backflushing mode and the tertiary filtering backflushing mode shown in FIG. 1 or FIG. 2.

Fig. 8-10 are schematic diagrams of three pipeline layout structures of a dual-channel single-layer rigid pipeline system based on the waterway structure adopting the filtering backflushing mode shown in fig. 7, wherein a third-stage preposed filter liner is arranged at the front position, a first-stage preposed filter liner and a second-stage preposed filter liner are respectively arranged at the middle position and the rear position, concentric inner and outer opposite water ports with different diameters and a front-interface and rear-interface backflushing pipeline layout mode.

Fig. 11-13 are schematic diagrams of three pipeline layout structures of a dual-channel single-layer rigid pipeline system based on the waterway structure adopting the filtering backflushing mode shown in fig. 7, wherein a third-stage preposed filter liner is arranged at the front position, a first-stage preposed filter liner and a second-stage preposed filter liner are respectively arranged at the middle position and the rear position, water inlet and outlet butt water gaps are respectively arranged, and a front-interface and rear-interface backflushing pipeline layout mode is adopted.

FIG. 14 is a second water path switching schematic diagram for the dual-channel single-layer rigid pipeline system with the primary raw water backflushing mode, the secondary filtering backflushing mode and the tertiary filtering backflushing mode shown in FIG. 1 or FIG. 2.

Fig. 15 is a schematic diagram of a pipeline layout structure of a dual-channel single-layer rigid pipeline system in a front and rear dual-port backflushing pipeline layout mode, wherein a third-stage pre-filter liner is arranged in the front of the second waterway structure shown in fig. 14, a first-stage pre-filter liner and a second-stage pre-filter liner are respectively arranged in the middle and rear of the second waterway structure, concentric inner and outer butt water inlets with different diameters are formed in the first-stage pre-filter liner and the second-stage pre-filter liner, and the front-stage pre-filter liner and the rear-stage pre-filter liner are arranged in the second waterway structure.

Fig. 16 is a schematic view of a pipeline layout structure of a dual-channel single-layer rigid pipeline system in a front and rear dual-interface backflushing pipeline layout mode, wherein a third-stage preposed filter liner is arranged at the front position, a first-stage preposed filter liner and a second-stage preposed filter liner are respectively arranged at the middle and rear positions, and the water inlet and outlet butt joint water gaps are respectively arranged on the basis of the second waterway structure adopting the filtering backflushing mode shown in fig. 14.

FIG. 17 is a schematic diagram of an upper layer pipeline structure of a four-external-connection water gap and five filter liners in a remote connection mode, a preposed water outlet pipeline with a single downward butt-joint water gap and a single water purification detection device, a double-channel single-layer rigid pipeline system with a raw water backflushing mode, a filtration backflushing mode and a front and rear double-interface backflushing pipeline layout mode, a concentrated water discharge pipeline with a concentrated water discharge flow control device, a cavity inlet electric control valve, a rear discharge electric control valve, a concentrated water discharge pipeline with a concentrated water discharge detection device, a pure water pipeline with a pure water detection device, a pure water change electric control valve, a pure water change electric control valve, an n-type pipeline crossing device, a first-stage, a second-stage and a third-stage preposed filter liners which are respectively arranged at rear, front and middle positions, and a through hole structure and a swing shaft seat fastening structure and an upper layer module which is reserved at a position corresponding to a dry cavity structure plane.

Fig. 18-25 are eight kinds of piping layout structures obtained by replacing concentric inner and outer opposite water receiving ports with split inlet and outlet water butt joint water gaps, on the basis of the piping layout structure diagram of the dual-channel single-layer rigid piping system shown in fig. 17, which adopts a third-stage front filter liner arranged at the middle position, the first and second-stage front filter liners arranged at the rear and front positions, and a concentric inner and outer opposite water receiving ports with different diameters, and a front and rear double-port back-flushing piping layout mode.

FIGS. 26-27 are schematic diagrams of switching between four water paths using four external water ports and five filter bladders, a pre-positioned water outlet pipeline with a downward butt-joint water port and a water purification detection device, a dual-channel single-layer rigid pipeline system with a raw water backflushing mode and a filter backflushing mode, a concentrated water discharge pipeline with a concentrated water discharge flow control device, a cavity inlet electric control valve, a discharge electric control valve, a concentrated water discharge detection device, a pure water pipeline with a pure water detection device, a pure water change electric control valve, a pure water change electric control valve, and six solubility total solid detection probes.

Detailed Description

Usually, the water pipes connecting the filter bladders and the water control component are respectively connected with the water inlet and outlet pipes of the base to form a filter channel and related pipes. And selecting relevant water passing detection components to detect and control the water passing state of relevant water passing pipelines in the water purifier. The water-passing detection component is at least one of a water pressure switch (high-pressure switch and low-pressure switch) or a flow sensor or a TDS detector (or a probe) or a water level detection switch (contact type or non-contact type) or a water temperature detector.

Each of the above water detection components is conventional in the art. As for the water purifier provided with the micro-filtration membrane, the ultrafiltration membrane, the reverse osmosis membrane filter liner or the nanofiltration membrane filter liner, which water passing detection components need to be configured, and the number of each water passing detection component needs to be used, especially for a single-tap water purifier provided with a pressure-bearing type pure water tap (water outlet valve) or a non-pressure-bearing type tap (gooseneck tap), or a double-outlet water purifier provided with a front water outlet valve and a pure water tap at the same time, or an electric control water outlet tap, or whether a concentrated water discharge tank is arranged or whether cold water and hot water are arranged, the water passing detection components which need to be configured for detecting and controlling the water passing state need to be configured according to the specific needs of various types. On the basis that the water passing state of one detection control point is detected and controlled by a single water passing detection control part, the detection control can also be carried out by the combined detection of a plurality of water passing detection parts so as to distinguish different water passing states of the detection control point. On the basis, detection control can be carried out through combined detection of a plurality of water passing detection parts at different positions so as to determine or distinguish different water passing states of detection control points at specific positions, such as the water outlet state of a front water outlet valve or a pure water faucet (water outlet valve) under the condition that water enters a filtering channel. The above-mentioned water-passing detection component and its correspondent detection control means are all belonging to the common knowledge in the field.

Example 1. A layout method of upper layer rigid pipeline of water purifier with double-layer rigid pipeline structure is provided, which is a double-layer rigid pipeline structure composed of a lower filter liner bin internally provided with a filter liner and a booster pump and provided with a bottom layer pipeline and an upper module matched with the lower filter liner bin and provided with an upper layer related pipeline; the double-layer rigid pipeline structure is sequentially connected with 1-2 preposed filter liners, reverse osmosis membrane filter liners and water inlets and water outlets of the postposition functional filter liners in series through additional water ports to form a filter channel, wherein the part connected with the preposed filter liners in series is the preposed filter channel; the preposed filtering channel is connected with a preposed water inlet pipeline and an external water inlet end and a preposed water outlet pipeline of a lower water opening respectively, and is connected with a reverse osmosis membrane filter liner through a booster pump. In the scheme, all connecting pipelines between the preposed filtering channel and the reverse osmosis membrane filter liner are regarded as preposed water outlet pipelines.

The middle part of the rear side wall of a lower filter liner bin of the water purifier is provided with a vertical undercut structure, a reverse osmosis membrane filter liner is arranged in front of the vertical undercut structure, a front filter liner and a rear functional filter liner are respectively arranged on two sides of the reverse osmosis membrane filter liner, and then a bin body part structure for placing each filter liner is divided into a front side corresponding to the front filter liner and a rear side corresponding to the rear functional filter liner along the length direction at the position of the axis of the reverse osmosis membrane filter liner; the relevant pipeline of corresponding overhead module and upper strata also correspondingly divide into leading side and rearmounted side to lay the relevant pipeline of upper strata in the top that corresponds each filter bag, and the top that corresponds vertical undercut structure sets up three vertical external mouth of a river and corresponding connecting line: the external water inlet and the external water discharge outlet which are arranged at or close to the front side, and the external pure water inlet which is arranged at or close to the rear side, and the front end of the front filtering channel which corresponds to the upper part of the front filtering liner is connected with the external water inlet.

The reverse osmosis membrane filter liner is provided with an upward pure water port and a concentrated water discharge port which are vertically butted with a downward butting water port of an upper layer related pipeline positioned on the upper module; the preposed water outlet pipeline is in butt joint with an upward water outlet connected with the water inlet end of the booster pump through a downward water outlet; the water outlet end of the booster pump is connected with a downward water inlet of the reverse osmosis membrane filter liner through a bottom pipeline; in the upper layer related pipeline, a pure water butt joint water gap and a pure water pipeline which are butt joint with the pure water gap are arranged at the rear side, are butt joint with an upward water gap of the rear functional filter liner through a downward water gap, and are connected with an external pure water gap through a water outlet pipeline of the rear functional filter liner; the concentrated water discharge butt joint water gap butted with the concentrated water discharge water gap is arranged on the front side, and a concentrated water discharge pipeline communicated with the concentrated water discharge butt joint water gap is connected with a concentrated water discharge flow control device arranged in front of the butt joint water gap.

The layout method of the upper layer rigid pipeline of the water purifier also comprises the following steps: the back section of the concentrated water discharge pipeline connected with the water outlet end of the concentrated water discharge flow control device is arranged along the front side and connected with an external water discharge outlet; the external water inlet and the external water discharge outlet are respectively arranged in a remote mode at a position far away from and near the external pure water outlet or in a close mode at a position near to and far from the external pure water outlet, wherein for the remote mode, the rear section of the concentrated water discharge pipeline or the external water discharge outlet is connected across the front water discharge pipeline or the external water discharge outlet is connected around the front filtering channel and the outer side of the external water inlet; for the proximity mode, the rear section of the concentrated water discharge pipeline is connected with an external water discharge outlet around the outer side of the prepositive filtering channel.

As the water passing control parts of the water purifier are mostly arranged in the water passing pipeline behind the booster pump, more water passing control parts are involved, especially for a pure and clean dual water outlet type. In addition, for the machine types with the functions of filter liner dynamic state detection, regular water changing of pure water and water passing electric control component automatic detection, most of the arranged water passing control (detection) components are connected to the rear side, so that a pipe distribution line mode that the rear section of the concentrated water discharge pipeline is distributed along the front side and is communicated with an external water discharge outlet through a backflushing pipeline is selected, and the problems are favorably solved.

The external water inlet and the external water discharge outlet are respectively arranged in a remote mode at a position far away from and near the external pure water port or in a close mode at a position near and far away from the external pure water port, wherein in the remote mode, the rear section of the concentrated water discharge pipeline or the external water discharge pipeline is connected with the external water discharge outlet by crossing the front water discharge pipeline, or the external water discharge outlet is connected around the front filtering channel and the outer side of the external water inlet; for the proximity mode, the rear section of the concentrated water discharge pipeline is connected with an external water discharge outlet around the outer side of the prepositive filtering channel.

As an improvement, all filter container butt joint water gaps of the upper module are in direct rigid butt joint with related water gaps of the front filter container, so that a double-channel single-layer rigid pipeline system and a machine are further simplified, have a more reasonably distributed rigid pipeline structure, and meet the requirements of machine miniaturization, filter container replacement and convenient maintenance.

In the scheme, all connecting pipelines between the pre-filtering channel and the reverse osmosis membrane filter liner are regarded as a pre-water outlet pipeline, namely the pre-water outlet pipeline comprises pipelines connected with the water inlet end and the water outlet end of the booster pump.

The upper end of an external hose of the water purifier is butted with an external water gap which is arranged downwards in an upper-layer related pipeline of the upper module. In addition, relative front and rear directions are set by the front and rear side walls of the lower filter chamber, and the front and rear relations between related structures are determined.

The related art of the pre-filtering channel and the pre-backflushing channel belongs to the prior art in the field. The single preposed filter container can be a single filter material layer filter container, can also be a multi-filter material layer filter container, and can also be a filter container formed by combining a plurality of filter containers with single water.

As a special example, a common filter bladder without reverse water passing can be arranged in the preposed water outlet pipeline. The arrangement of the filter liner only affects the water treatment degree of the filter channel, and does not affect the switching between the filter channel and the back flushing channel and the corresponding original water passing direction.

In the scheme, when the water purifier is used as a under-cabinet type water purifier, three external water outlets are arranged downwards and are respectively butted with three external hoses. When the water purifier is a desktop type, the external water inlet and the external water discharge port are arranged downwards and are respectively butted with the two external hoses. The external pure water port is upwards arranged and vertically butted with an upper device which is additionally provided with an upper pure water tank and a heating device (cold water and hot water), and the upper device and a lower filter liner bin of the built-in upper module are connected into a whole by matching up and down through a loose joint device. At the moment, the external pure water port is an internal pure water port which is in butt joint with the water inlet of the upper pure water tank. The trip device is removed from the upper assembly and allows for maintenance of the water control components disposed on the upper module, and the filter cartridge can be replaced by removing the upper module. The main difference between the under-cabinet type and the desk top type is the lack of a pure water tank and a heating device. In view of the fact that the under-cabinet type is the mainstream type, the inner and outer pure water ports are collectively referred to as the outer pure water port in the present case for convenience of description. The present embodiment and the following embodiments are applicable to both of the under-counter type and the desk type.

Example 2. On the basis of the embodiment 1, in the remote connection mode, the rear section of the concentrate discharge pipeline and the front water outlet pipeline are mutually crossed through an n-type pipeline crossing device which is additionally arranged and fixed on the upper module: the upper module is provided with two vertical crossing butt joint water gaps which are arranged on two sides of one of the two pipelines of the front water outlet pipeline and the rear section of the concentrated water discharge pipeline and are in butt joint with the two vertical water gaps of the n-type pipeline crossing device and are fixedly connected with each other in a fastening standard; the n-shaped pipeline crossing device is connected in series in the preposed water outlet pipeline, the rear section of the concentrated water discharging pipeline passes through a rigid pipeline arranged between crossing butt joint water gaps which are respectively butted with two vertical water gaps of the corresponding n-shaped pipeline crossing device and is connected with an external water discharging port, or is connected in series in the rear section of the concentrated water discharging pipeline and is connected with the water inlet end of the booster pump through a rigid pipeline arranged between crossing butt joint water gaps which are respectively butted with two vertical water gaps of the corresponding n-shaped pipeline crossing device.

Example 3. On the basis of the embodiments 1 and 2, a backwater reuse system with an inlet cavity electric control valve, a concentrated water discharge cavity, a backwater electric control valve and a discharge electric control valve is also arranged; the lower filter liner bin is a double-cavity structure which is formed by respectively arranging a booster pump and a dry cavity structure and a wet cavity structure for discharging concentrated water in a separated and connected mode; the inlet electric control valve and the discharge electric control valve are respectively arranged at two sides of the concentrated water discharge flow control device, or arranged between the concentrated water discharge flow control device and the front filter liner, and the water inlet ends of the two electric control valves are connected with the rear section of the concentrated water discharge pipeline. The water outlet end of a water return electric control valve arranged in the dry cavity structure is connected with the water inlet end of the booster pump, and the water outlet end of the discharge electric control valve is connected with an external discharge water outlet. The concentration discharge water cavity is of a single wet cavity structure for storing concentration discharge water or a wet cavity structure (a preferred mode) for storing concentration discharge water and internally arranging a filter liner.

The lower filter container cabin can adopt a double-cavity structure formed by combining a dry cavity structure of a built-in booster pump and a filter container with a wet cavity structure for storing and discharging concentrated water, and also can adopt a double-cavity structure formed by combining a dry cavity structure of a built-in booster pump with a built-in filter container and storing and discharging concentrated water by utilizing a gap space between a cabin wall and each filter container. The double-cavity structure can be an independent dry cavity structure and an independent wet cavity structure which are connected through a fastener to form an integral double-cavity structure, and can also be a connected double-cavity structure formed by injection molding of the dry cavity structure and the wet cavity structure together.

The dry cavity structure and the wet cavity structure of the lower filter liner bin can be arranged and combined side by side along the length direction of the lower filter liner bin to form a two-cavity length combination mode, and can also be arranged and combined side by side along the width direction of the lower filter liner bin to form a two-cavity width combination mode. No matter be two chamber length compound mode or two chamber width compound modes, as the wet chamber structure or the single cavity structures of storage row dense water of row dense water chamber, or the cavity structures of storage row dense water and built-in filter courage wherein:

for the two-cavity length combination mode, the wet cavity structure preferably has a cavity structure which stores and discharges concentrated water and is internally provided with the filter liner.

For the two-cavity width combined mode, the wet cavity structure preferably adopts a single cavity structure for storing and discharging concentrated water.

Example 4. On the basis of the embodiment 3, the discharge electric control valve is arranged at a position between the external discharge water outlet and the prepositive water outlet pipeline. The other end of the external hose connected with the external water discharge port is communicated with the sewer pipeline. In order to prevent bacteria in the external sewer pipeline from entering the related pipeline of the water purifier through the external drainage port, the drainage electric control valve is arranged near the external drainage port. The concentrated water in the rear section of the concentrated water discharge pipeline is discharged out of the external discharge port through the opened discharge electric control valve. The drain electronic control valve closes the isolation sewer line when the machine is in an off-stream condition.

Example 5. On the basis of the embodiments 1, 2, 3 and 4, a water changing pipeline connected with a water changing electric control valve in series is also arranged; arrange the water change electric control valve or pure water change water electric control valve or preceding replacement water electric control valve on the overhead module in, wherein:

to the water electric control valve is traded to pure water, the water electric control valve is traded to pure water or is located the rearmounted side or is located the position department that corresponds the trunk cavity structure of placing the booster pump, and corresponding pure water trades water pipeline and advances water end connection pure water pipeline: or the water inlet end of the post-positioned functional filter liner is connected, or the water outlet end of the post-positioned functional filter liner is connected, and the water outlet end of the pure water exchange pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external drainage outlet or connected with the external drainage outlet through an additional drainage electric control valve.

The pure water changing electric control valve arranged on the upper module is used for communicating the water outlet end of the reverse osmosis membrane filter liner with the rear section of the concentrated water discharging pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve is in a closed state without water passing; when the filtering channel is in an off-stream state in a longer time period, an additionally arranged electric control device can be controlled on the premise that a pure water outlet valve is closed at regular time intervals according to a preset time interval, the prepositive filtering channel and the booster pump operate to convey water to enter the reverse osmosis membrane filter liner, and pure water is changed and water is discharged through the water changing electric control valve, the rear section of the concentrated water discharging pipeline and the externally connected water discharging port until the off-stream state of the filtering channel is relieved. In addition, the electric control device can also control the pure water to change the water channel to discharge water in time through the button that the machine set up.

When the reverse osmosis membrane filter liner and the rear functional filter liner need to be washed with water, the water inlet end of the pure water changing electric control valve can be connected with the water outlet end of the rear functional filter liner (in a preferred mode).

When the water cleaning is not needed to be carried out on the rear-mounted functional filter liner, the water inlet end of the pure water changing electric control valve can be connected with the water inlet end of the rear-mounted functional filter liner, and only the reverse osmosis membrane filter liner is subjected to water changing cleaning.

As an improvement, the water outlet end of the pure water changing electric control valve is connected with the water inlet end of the discharge electric control valve, and then dual bacteria isolation control is carried out through two water passing electric control valves arranged between the pure water pipeline and the external discharge water port.

For the front replacement water electric control valve, the front replacement water electric control valve is positioned at the front side or the rear side or the position corresponding to the dry cavity structure, the water inlet end of the corresponding front replacement water pipeline is connected with a front water outlet pipeline, and the water outlet end of the front replacement water pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external water discharge outlet or connected with the external water discharge outlet through an additional discharge electric control valve.

The water discharged from the preposed water outlet pipeline is discharged through a purified water changing channel formed by the preposed water replacing electric control valve, the rear section of the concentrated water discharging pipeline and the external water discharging port until the filter channel is released from the shutdown state.

The electric control device can control the front water replacement electric control valve to conduct water outlet in real time through an additional key or control the front water replacement electric control valve to conduct water outlet at fixed time intervals through a preset time interval.

More importantly, the water purifying and changing channel can be used for discharging or changing the concentrated discharge water in the concentrated discharge water cavity through a water conveying pump (figures 1, 17 and 26) or a booster pump (figures 2 and 27).

Example 6. On the basis of the embodiments 1, 2, 3, 4 and 5, an external water purifying port is also arranged; the external pure water port is adjacent to the external pure water port, or is arranged at the position outside the external pure water port and far away from the front side, or is arranged at the position between the external pure water port and the external water inlet and the external water discharge port; the external water purifying port is butted with an upward water port arranged on a preposed water outlet pipeline at the water inlet end of the booster pump through a pipeline provided with a downward water port, or is butted with an upward water port additionally arranged on a preposed water outlet pipeline connected with the water outlet end of the booster pump through a pipeline provided with a downward water port. When the external pure water port is arranged on the inner side of the external pure water port, the external pure water port can be directly connected with a preposed water outlet pipeline arranged in front of the pure water pipeline downwards, and can also be connected with the preposed water outlet pipeline by additionally arranging a pipeline bypassing the outer side of the external pure water port.

When the washing water needs coarse filtration and large flow rate, the purified water in the prepositive filtration channel can be discharged through a purified water valve externally connected with a purified water port. At the moment, the reverse osmosis membrane filter liner and the post-positioned functional filter liner are not flushed with water.

Example 7. On the basis of the embodiments 1, 2, 3, 4, 5 and 6, related electric control valves are further arranged to control related water paths to be switched on or switched off so as to form a dual-channel single-layer rigid pipeline system; the double-channel single-layer rigid pipeline system is provided with a water inlet electric control valve connected in series with a water inlet pipeline of the relative preposed filter liner, a backflushing water inlet electric control valve of which the water outlet end is connected with the water outlet end of the relative preposed filter liner, and a water outlet electric control valve of which the water inlet end is connected with the water inlet pipeline of the relative preposed filter liner and is arranged behind the water inlet electric control valve and the water outlet end is connected with an external water outlet through a backflushing pipeline.

The waterway control mode of the double-channel single-layer rigid pipeline system is a filtering mode for controlling to switch on the water inlet electric control valve and close the backflushing water inlet electric control valve and the water outlet electric control valve and then controlling to serially connect the preposed filter containers to pass forward water, or a backflushing mode for controlling to switch on the related backflushing water inlet electric control valve and the water outlet electric control valve and close the related water inlet electric control valve and then controlling the single preposed filter container to pass backward water and controlling the single preposed filter container to pass the water through the external water discharge port connected by the backflushing pipeline and the backflushing pipeline to discharge the water, wherein for the backflushing mode:

the waterway control mode or the control switching conducts the water outlet electric control valve of which the water inlet end of the prepositive filter container to be backflushed is connected with the backflush pipeline and the water outlet end of the water outlet electric control valve is connected with the water outlet end of the backflush water inlet electric control valve, the water inlet end of the backflush water inlet electric control valve is communicated with the water inlet end of the water inlet electric control valve, and the related water inlet electric control valve is closed to form the raw water backflush mode of the reverse water passing of the filter container.

The waterway control mode or the filtration backflushing mode is formed by controlling the forward water passing of the preposed water inlet pipeline and the preposed filter container in front, switching and conducting the water inlet end and the water outlet end of the second-stage preposed filter container to be backflushed and connecting the water inlet end and the water outlet end of the second-stage backflushing water inlet electric control valve of the backflushing pipeline respectively, closing and connecting the second-stage water inlet electric control valve additionally arranged in the pipeline between the preposed filter container and the rear preposed filter container and connecting the water inlet end of the second-stage backflushing water inlet electric control valve with the water inlet end of the second-stage water inlet electric control valve to form forward water passing of the preposed filter container and reverse water passing of the rear preposed filter container.

In a preferred mode, the two-stage preposed filter liners in the preposed filter channel are subjected to individual back flush cleaning one by one: the front first-stage front filter container adopts a raw water backflushing mode, and the rear second-stage front filter container adopts a filtering backflushing mode.

When only the back second-stage prepositive filter container needs to be filtered and backflushed and the front first-stage prepositive filter container does not need to be subjected to raw water backflushing, three water passing electric control valves related to the first-stage prepositive filter container can be omitted: a water inlet electric control valve and a water outlet electric control valve which are arranged in the first-stage prepositive filter liner water inlet pipe (36738), and a backflushing water inlet electric control valve which is connected with the water outlet end of the first-stage prepositive filter liner water inlet pipe.

For the conventional reverse osmosis membrane water purifier, the reverse osmosis membrane filter liner has a filtration pore diameter of 0.1 nanometer and needs to be positively flushed with water under the action of high pressure far higher than the pressure of a municipal tap water pipe, so that the reverse osmosis membrane water purifier cannot be reversely flushed (the reverse osmosis membrane water purifier lacks high pressure and cannot be used due to the fact that the size of impurities in water is far larger than 0.1 nanometer even under the action of high pressure).

For reverse water flow alone, a stopped booster pump would not be able to flow water as would a closed "electronically controlled valve". Therefore, the back flushing mode is mainly considered to be implemented for the front filter container.

The external drainage outlet is connected with both the back flushing pipeline and the rear section of the concentrated water drainage pipeline.

Example 8. On the basis of the embodiment 7, the front filtering channel is provided with three front filtering containers; along the lower three prepositioned filter liners of straining courage storehouse width (direction) setting up preceding, back two prepositioned filter courage and straining courage combination with another adjacent prepositioned and be the triangle structure overall arrangement and place in the below of overhead module: the third stage is arranged in front of the filter container or in the front position or in the middle position, wherein:

for the mode that the third-stage prepositive filter container is arranged at the front position, the corresponding first-stage prepositive filter container and the second-stage prepositive filter container are respectively arranged at the middle position and the rear position.

For the mode that the third-stage prepositive filter container is arranged at the middle position, the corresponding first-stage prepositive filter container and the second-stage prepositive filter container are respectively arranged at the rear position and the front position.

The upper layer related pipeline is provided with corresponding filter liner butt joint water gaps which are butt jointed with the water inlets and the water outlets of the three filter liners respectively, and related pipeline laying paths are determined, and two butt joint water gaps of one group of filter liner butt joint water gaps are coaxial butt joint with the water inlets and the water outlets of the front filter liner provided with corresponding structural modes, or are split joint water gaps arranged at two positions and butt joint with the water inlets and the water outlets of the front filter liner provided with corresponding structural modes.

The two-channel single-layer rigid pipeline system corresponding to the three preposed filter liners or the filtering mode of sequentially positively passing water corresponding to the three preposed filter liners.

The system is a double-channel single-layer rigid pipeline system corresponding to the three preposed filter liners or a raw water backflushing mode corresponding to the independent backflushing of the three preposed filter liners.

The two-channel single-layer rigid pipeline system corresponding to the three preposed filter liners is a filtering back-flushing mode corresponding to forward water passing of a front first-stage preposed filter liner and backward water passing of a rear second-stage preposed filter liner or a third-stage preposed filter liner.

The filter container butt joint water gap of the upper layer related pipeline is in butt joint with the water inlet and the water outlet of each of the three filter containers to determine the layout path of the related pipeline, and two butt joint water gaps of one group of filter container butt joint water gaps are coaxial butt joint with the water inlet and the water outlet of a front filter container with corresponding structural modes, or are split joint water gaps arranged at two positions and butt joint with the water inlet and the water outlet of a front filter container with corresponding structural modes.

Different from the mode that an integrated electronic control recoil switching device with a built-in connecting pipeline is independently arranged and is connected with a front filter container plug-in pipeline which is additionally arranged in a butt joint mode, the double-channel single-layer rigid pipeline system determines the position relation of the front filter container which is directly connected with the double-channel single-layer rigid pipeline system through a downward water gap structure, so that the double-channel single-layer rigid pipeline system cannot move randomly.

After the fixed position of each preposed filter container in the filter channel is determined, three groups of filter container butt joint water gaps corresponding to the proper positions of the preposed filter containers are selected and used as core structures to sequentially arrange corresponding filter channels and recoil channels aiming at all the preposed filter containers in the surrounding direction (according to the connection sequence and the position trend of each preposed filter container and the sequence of connecting pipelines of the filter container butt joint water gaps), and the cross crossing of the pipelines is avoided.

Example 9. On the basis of embodiments 7 and 8, the backflushing pipeline 5 and the rear section 7a of the concentrated water discharge pipeline share one pipeline, and the tail end of the backflushing pipeline is connected with an external water discharge outlet 51; as the arrangement of the front and rear double-interface backflushing pipelines, the backflushing pipeline 5 is connected in series in the rear section 7a of the concentrated water discharge pipeline by a pipeline section which is connected with the water outlet end of each water outlet electric control valve and is provided with backflushing pipeline butt joints 5a and 5b at two ends respectively, or is connected in the rear section 7a of the concentrated water discharge pipeline by 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 joints 5a and 5b respectively.

In the scheme, a backflushing pipeline with front and rear backflushing pipeline butt water ports is specially arranged for realizing certain specific functions or specific structures (see the above embodiment), and the electric control filtering backflushing system is arranged in front of the backflushing pipeline with the front and rear backflushing pipeline butt water ports, and is shown in a water passing pipeline layout schematic diagram in attached figures 1-2, 4-6, 8-13 and 15-25. In related drawings, the front and back backflushing pipelines are in butt joint with the water gaps 5a and 5b or are communicated through the backflushing pipelines, or are communicated through a pipeline (such as the back section of the concentrated water discharging pipeline) with a specific function.

For the reverse osmosis water purifier, the back segment of the back flushing pipeline and the back segment of the concentrate discharge pipeline, which are provided with the front and the back two back flushing pipelines to be butted with the water ports 5a and 5b, can be connected with the same external water discharge port for water discharge.

To the reverse osmosis water purification machine, set up two recoil pipelines and to the recoil pipeline of water receiving mouth through the mode of concentrated water pipe way drainage, both can save a pipeline by recoil pipeline to external drainage water mouth, and the shared plane position of this pipeline, the new route that the concentrated water pipe way of machine drainage laid the pipeline along leading automatically controlled filtration recoil system has been given again, and corresponding specific external drainage water mouth position, lay and lay the external water mouth including external drainage water mouth for the relevant pipeline in limited plane size scope and lay the composite scheme and provide the new choice then.

Example 10. On the basis of embodiments 1, 2, 3, 4, 5, 6, 7, 8 and 9, a water outlet detection device is also arranged; the water outlet detection device is arranged in a pure water pipeline connecting a pure water butt joint water port and an external pure water port to form a pure water detection device, or is arranged in a pipeline between a preposed water outlet pipeline and an external pure water port to form a pure water detection device, or is arranged in a pipeline connecting the rear section of a concentrated water discharge pipeline and an external water discharge port to form a concentrated water discharge detection device, wherein for the pure water detection device, the pure water detection device is arranged in the preposed water outlet pipeline and is arranged at a high-pressure switch at the water outlet end of the booster pump, or is arranged in the preposed water outlet pipeline and is arranged at the water inlet end of the booster pump, and is connected with the water outlet end of the other concentrated water discharge cavity through a special water transmission pump in series connection, or is arranged in the preposed water outlet pipeline and is arranged at the water inlet end of the booster pump, and is connected with the water outlet end of the other concentrated water discharge cavity through the special water transmission pump in series connection; for the pure water detection device, the pure water pipeline connected with the pure water detection device is arranged in front of the preposed water outlet pipeline or behind the preposed water outlet pipeline.

In order to improve the water quality, on the basis of the mode of conventionally arranging a rear activated carbon filter liner, a mineralization filter liner or an ultraviolet sterilizer (filter liner) or a mineralization and sterilization combined filter liner can be additionally arranged. The detection of the pure water detection device is not influenced by the arrangement of the post-positioned active carbon filter liner.

In general, a conventional single-outlet reverse osmosis pure (pure) water machine employs either an outlet control mode in which a high-pressure switch 8b is provided in a pure water outlet line to detect pure water valve actuation and a booster pump inlet line is normally open (the pre-filter channel is subjected to mains pressure), or an inlet control mode in which a low-pressure switch or a flow sensor (flow switch) is used to detect inlet valve actuation (the pre-filter channel is not subjected to mains pressure).

For a double-outlet reverse osmosis pure and water purifier, a conventional machine type adopts an outlet water control mode. After the water purifying valve is opened, municipal tap water flows out of the water purifying valve under the action of pipe pressure, and simultaneously triggers a preposed detection part in the preposed water inlet pipeline, the preposed filtering channel or the preposed water outlet pipeline to give a corresponding water purifying and water outlet signal. The machine has the defect and the deficiency that the preposed filtering channel bears the pressure of a tap water pipe.

As an improvement, the double-outlet reverse osmosis pure water purifier which is not used is enabled to be in a non-pressure-bearing state (water leakage of the water purifier is avoided) as much as possible. Therefore, the Chinese patent application material discloses a technical scheme of a mechanical valve for simultaneously controlling water inlet and water outlet, and a monitoring scheme aiming at a double-water-outlet reverse osmosis pure water and a pure water outlet signal of a water purifier adopting a water inlet control mode: the water purifying valve and the pure water valve adopt double-control mechanical valves with double switching surfaces, or the water inlet valve and the water purifying valve are opened, or the water inlet valve and the pure water valve are opened, a water pressure switch bears municipal tap water and gives out a corresponding water inlet valve opening signal, and a flow sensor or a flow switch acts to confirm the flowing of the tap water; and detecting whether the high-voltage switch in the pure water pipeline has voltage drop or not, wherein Y: confirming water outlet of the pure water pipeline; n: and (5) confirming the water outlet of the water purifying valve. However, the technical scheme has the defects and disadvantages of complex structure, more connected external pipelines, high cost, more water passing detection parts, small application range and the like of the double-control mechanical valve.

The technical scheme of the water purification detection device is provided for a water purification and outlet detection scheme of a double-outlet reverse osmosis type in a mode of controlling a normally closed water purification pipeline by adopting an electric control valve, wherein the scheme comprises the following steps:

for the model without the concentrated water discharging tank, the external water purifying opening and the pipeline are connected in a preposed water discharging pipeline at the water discharging end of the booster pump and are connected in series with a high-pressure switch 8b serving as a water purifying detection device, and after the pure water valve is closed, the booster pump continues to operate to enable the water pressure in the pipeline to rise until the high-pressure switch 8b acts. After the pure water valve is opened, the pressure is released to trigger the high-voltage switch 8b to correspondingly act and output a corresponding signal.

For the model of setting the concentrate discharging water tank, the external water purifying port and the pipeline can be connected in the prepositive water outlet pipeline at the water outlet end of the booster pump and connected in series to be used as the high-voltage switch 8b (see above) of the water purifying detection device, or the external water purifying port and the pipeline can be connected in the prepositive water outlet pipeline at the water inlet end of the booster pump and connected in series in the pipeline between the external water purifying port and the water outlet end of the concentrate discharging water cavity to be used as the high-voltage switch 8b or the low-voltage switch of the water purifying detection device and the matched mode of the water conveying pump 72.

For the mode that the external water purifying port is arranged at the water inlet end of the booster pump, after the water purifying valve is closed, the water delivery pump continues to operate to extract the concentrated water in the concentrated water discharging cavity, so that the water pressure in the pipeline is increased until the high-pressure switch 8b or the low-pressure switch acts, and a corresponding signal is output. And the water purifying valve is opened to lead the high-voltage switch 8b or the low-voltage switch to release pressure to trigger the high-voltage switch 8b or the low-voltage switch to correspondingly act and output a corresponding signal. In addition, the non-pressure concentrated water (purified water) in the concentrated water discharging cavity can be output to the purified water valve only by arranging the water conveying pump 72, and an ideal concentrated water discharging and returning utilization mode is realized. On the other hand, the booster pump extracts the concentrated water in the concentrated water discharging cavity through the conducted return water electric control valve 29a and uses the concentrated water to be input into the reverse osmosis membrane filter container to prepare pure water. Since repeated water production causes the TDS concentration of the concentrated discharge water to gradually increase, which has an influence on the reverse osmosis membrane filter element, the concentrated discharge water with higher concentration is preferably discharged through the conducting purified water valve.

The technical scheme of the embodiment solves the problem of purified water outlet detection of a double-outlet reverse osmosis type in a mode of controlling a normally closed purified water pipeline by an electric control valve.

The following description will be given by taking a two-channel single-layer rigid pipeline system configured by three front filter containers connected in series as an example.

In the attached drawing 1, the lower filter chamber is a dual-chamber structure (preferred mode) which adopts a two-chamber length combination mode and is formed by combining a dry chamber structure 93 of the built-in booster pump 42 and a wet chamber structure 92 which is used as a concentrated water discharge chamber and is used for placing the filter chambers 1 and storing the concentrated water discharge by utilizing the gap space between the chamber wall and each filter chamber 1. The double-cavity structure can be an independent dry cavity structure and an independent wet cavity structure which are connected through a fastener to form an integral double-cavity structure, and can also be an integrated double-cavity structure formed by injection molding of the dry cavity structure and the wet cavity structure together.

A vertical undercut structure 9 is arranged in the middle of the rear side wall of the lower filter chamber. A reverse osmosis membrane liner 14 is provided in front of (with respect to the rear side wall) the vertical undercut structure 9. The three front filter liners 11, 12, 13 and the rear functional filter liners 15, 16 are respectively arranged at two sides of the reverse osmosis membrane filter liner 14, and the dry cavity structure 93 is arranged at the outer sides of the rear functional filter liners 15, 16.

In the scheme, at the position of the axis of the reverse osmosis membrane filter liner, a central line is arranged along the width (direction) of the lower filter liner bin to divide the bin body part structure for placing each filter liner into a front side corresponding to the front filter liner and a rear side corresponding to the rear functional filter liner along the length direction. The corresponding upper module and the upper layer related pipeline are also divided into a front side and a rear side correspondingly.

The part of the bin body for placing each filter liner is a whole lower filter liner bin structure or a part of the lower filter liner bin structure. The lower filter liner bin adopts a double-cavity structure which is formed by respectively arranging a booster pump and a dry cavity structure and a wet cavity structure for discharging concentrated water in a separated and connected mode, and the bin body is partially structured into a dry cavity structure or a wet cavity structure.

The upper module is provided with specific upper-layer related pipelines above the corresponding wet cavity structure 92, and three downward external water receiving ports and corresponding connecting pipelines are arranged above the corresponding vertical undercut structure 9: an external water inlet 31 and an external water discharge port 51 close to the front filter container, and an external pure water port 61 close to the rear functional filter container, and the front end 1a of the front filter channel above the front filter container is connected with the external water inlet 31; the reverse osmosis membrane filter liner 14 is provided with an upward pure water port and a concentrated water discharge port which are vertically butted with downward butted water ports 14a and 14b of upper-layer related pipelines of the upper-layer module respectively; the preposed water outlet pipeline 4 is in butt joint with an upward water inlet connected with the water inlet end of the booster pump 42 through a downward water inlet 43; the water outlet end of the booster pump 42 is connected with a downward water inlet of the reverse osmosis membrane filter liner 14 through a bottom pipeline; in the upper layer related pipeline, a pure water butt joint water gap 14a and a pure water pipeline 6 which are butt joint with the pure water gap are positioned at one side close to the rear functional filter liner, are butt joint with an upward water gap of the rear functional filter liner through a downward water gap, and are connected with an external pure water gap 61 through a water outlet pipeline of the rear functional filter liner; the concentrate discharge butt joint water gap 14b butt jointed with the concentrate discharge water gap is positioned at the front side, and the communicated concentrate discharge pipeline 7 is connected with a concentrate discharge flow control device 71 arranged in front of the butt joint water gap.

The water outlet end of the concentrated water discharge flow control device 71 is connected and the rear section 7a of the concentrated water discharge pipeline arranged along the front side is connected with an external water discharge outlet 51; the external water inlet 31 and the external water discharge outlet 51 are either respectively arranged in a remote mode at a far position and a near position from the external pure water port 61 or respectively arranged in a close mode at a near position and a far position from the external pure water port 61, wherein:

for the remote connection mode, the rear section 7a of the concentrate discharge pipeline is connected to the external water discharge outlet 51 arranged inside the external water inlet across the pre-water outlet pipeline 4, or connected to the external water discharge outlet 51 around the pre-filtering channel and the external water inlet 31, as shown in fig. 1.

For the hugging mode, the concentrate discharge line rear section 7a connects to an external discharge spout 51 (not shown) around the outside of the pre-filter channel.

As an improvement, an external pure water port 41 is arranged on the outer side of the external pure water port 61 and connected with the preposed water outlet pipeline 4, and then the machine is made into a double water outlet machine type with pure water and pure water output.

Furthermore, the wet chamber structure 92 connected in series in the return water line is connected to the rear section 7a of the concentrate discharge line through the chamber inlet electric control valve 29a of the outlet water line 7b provided on the upper module, and the discharge electric control valve 29 is connected in series in the rear section 7a of the concentrate discharge line connected to the external discharge outlet 51. The water outlet arranged at the lower part of the wet cavity structure is connected with the water inlet end of the booster pump 42 through a water return electric control valve 29b arranged in the dry cavity structure 93, so that a water return reuse system is formed.

On the basis, a pure water detection device is formed in a pure water pipeline connecting the pure water butt joint water gap and the external pure water gap. The pure water detection device can be a single water passing control component, and can also be a plurality of water passing control components so as to meet a plurality of control requirements. For example, the high-voltage switch 8b as the pure water detection means detects the mode: when the subsequent pipeline where the external pure water port is located is closed, the booster pump continues to operate to pressurize and convey water until the water pressure in the pure water pipeline rises to an upper control point to trigger the high-voltage switch to be switched off. When the subsequent pipeline where the external pure water port is located is conducted, the water pressure in the pure water pipeline is reduced to a lower control point to trigger the high-voltage switch to be switched on. In order to avoid the influence on the stable control of the high-voltage switch 8b due to the pressure relief of the reverse osmosis membrane filter liner after the water purifier is closed, a check valve 8c is additionally arranged in front of the high-voltage switch 8b. In addition, a flow sensor 8a or a flow switch is provided in the deionized water line to control the flow rate of the inlet and outlet water of the apparatus or to detect the flow of deionized water. The pure water detection device is provided with one or more water passing control components according to the detection requirement of water outlet or the automatic detection requirement of a machine.

On the rear side, for the configuration mode of the first-stage and second-stage rear-stage functional filter liners 15 and 16, a pure water detection device is arranged in the pure water pipeline 6 between the pure water butt joint water gap 14a and the water inlet butt joint water gap 15a of the first-stage rear-stage functional filter liner and is arranged in front of the front water outlet pipeline 4.

Similarly, for a double-outlet type with an external water purifying port 41, the water purifying detection device 8e is arranged on the preposed water outlet pipeline 4, and the water delivery pump 72 connected with the water return electric control valve 29b in parallel is arranged in the dry cavity structure. The function of the water transfer pump 72 on the external water purification port 41 is equivalent to the function of the booster pump 42 on the external water purification port 61. The clean water detection device 8e is either a high-voltage switch 8b or a low-voltage switch (preferred mode). After the booster pump 42 is turned off, the water feed pump 72 continues to operate until the line pressure-increasing purified water detection device 8e operates. After the subsequent pipeline of the external water purifying port is communicated, the pipeline is depressurized to the water purifying detection device 8e to prompt the water purifying pipeline to be communicated. On the basis, a check valve 8c is connected in series in the water outlet pipeline of the water delivery pump 72 to avoid pressure relief.

In addition, a pure water changing electric control valve 28a is arranged between the water outlet butt joint water gap 16b and the external water discharge port 51 of the two rear functional filter liners and is arranged behind the front water outlet pipeline 4.

The preposed water outlet pipeline 4 is provided with a downward water outlet 43 corresponding to the upward water outlet of the water inlet end of the booster pump 42 in the dry cavity structure.

An inlet electric control valve 29b is arranged in front of the pure water butt joint water gap 14a, and the outlet pipeline 7b thereof is communicated with the wet cavity structure 92 below. As a modification, the water outlet pipeline 7b of the chamber inlet electric control valve 29b on the upper module is downwards provided with a water inlet corresponding to the wet chamber structure 92.

The inlet electric control valve 29b and the discharge electric control valve 29 are respectively arranged at two sides of the concentrate discharge flow control device 71, and the water inlet ends of the two electric control valves 2 are connected with the rear section 7a of the concentrate discharge pipeline. For the remote mode shown in fig. 1, the electronically controlled discharge valve 29 is connected to the external discharge outlet 51 around the pre-filter channel and outside the external inlet 31.

On the front side, the third-stage front filter container 13 is arranged at the front position, and the corresponding first-stage front filter container 11 and the second-stage front filter container 12 are respectively arranged at the middle position and the rear position. A flow sensor 8a is arranged in a pipeline connected with the preposed water outlet pipeline 4 at the tail end 1b of the preposed filtering channel. A front replacement water electric control valve 28 is arranged between the front water outlet pipeline 4 and the rear section 7a of the concentrated water discharge pipeline. A concentrate discharge detection device 8d is provided near the external discharge outlet 51 and connected in series in the concentrate discharge pipe rear section 7a. The discharged concentrated water detection device 8d is either a flow sensor 8a or a flow switch or a low-pressure switch. A high voltage switch 8b may also be employed if certain high voltage conditions are met.

The piping structure layout of the two-channel single-layer rigid piping system 10 related to the pre-filter bladder shown in fig. 1 will be described later with reference to fig. 7.

In FIG. 2, on the basis of FIG. 1, the pipeline connected to the external water purification port is provided with a downward water port 44, and the front water outlet pipeline 4 connected to the water outlet of the booster pump 42 is further provided with an upward water port, and is connected to the water inlet of the front water replacement electronic control valve 28 disposed in front of the pure water pipeline through a pipeline, and the water outlet of the front water replacement electronic control valve 28 is connected to the water inlet of the discharge electronic control valve 29. On the basis, a high-pressure switch 8b as a purified water detection device is connected in series in a preposed water outlet pipeline of the external purified water port 41 and the downward water port 44, and a water delivery pump 72 and related pipelines are omitted.

The piping structure layout of the two-channel single-layer rigid piping system 10 relating to the front filter casing shown in fig. 1 and 2 will be described later with reference to fig. 7.

In fig. 3, a schematic water path switching diagram of a dual-channel single-layer rigid pipeline system 10 with a raw water backflushing mode is arranged corresponding to three preposed filter liners. The water inlet electric control valve 20 is connected with the front water inlet pipeline 3; three backflushing water inlet electric control valves 21, 22 and 23 corresponding to the three front filter liners 11, 12 and 13, and three water outlet electric control valves 25, 26 and 27. The waterway switching control mode shown in fig. 3 is a common knowledge.

In fig. 4-6, in combination with the schematic diagram of switching the raw water backflushing water path shown in fig. 2, a third-stage pre-filter liner is arranged at the front position, the corresponding first and second pre-filter liners are respectively arranged at the middle and rear positions, and a group of concentric inner and outer butt water inlets and outlets with different diameters and a pre-filter liner are coaxially butted to form a structural mode of coaxial butt joint with the water inlet and outlet with corresponding structural mode, and a backflushing pipeline layout with front and rear double backflushing pipeline interfaces is adopted, the backflushing pipeline of the corresponding double-channel single-layer rigid pipeline system is merged into (shared) the rear section of the condensed water discharging pipeline, then the rear section of the condensed water discharging pipeline is arranged along the front side and around the outer side of the front filter channel, and is connected with the external water discharging outlet 51 through the backflushing pipeline 5, thereby avoiding that the rear section 7a of the condensed water discharging pipeline is arranged along the rear functional filter liner side and needs to bypass the front water discharging pipeline 4, which leads to be difficult to arrange a pure water detection device and a pure water detection device in a limited space, and arrange corresponding connecting pipelines.

It should be noted that, compared with the layout mode of the single-interface backflushing pipeline, the layout mode of the double-interface backflushing pipeline with the front and rear double-backflushing pipeline interfaces is not only to add one backflushing pipeline interface, but has essential differences. Although the double-channel single-layer rigid pipeline system with the single-interface backflushing pipeline layout mode can solve the backflushing problem of the front filter liner, the double-channel single-layer rigid pipeline system does not help the pipe distribution and wiring of the rear section of the concentrated water discharge pipeline, namely, two pipelines need to be distributed by a machine. Even, when the machine is provided with an automatic flushing function that water in a front filter container (positive direction and reverse direction) is discharged through the rear section of the concentrated water discharge pipeline, the layout of the single-interface backflushing pipeline also has a connection control on the rear section of the concentrated water discharge pipeline. The back flushing pipeline and the back section of the concentrated water discharging pipeline in the double-connector back flushing pipeline layout mode share one pipeline, so that the pipe distribution space is saved, and the problem of cross crossing of the pipeline possibly involved by leading the back section of the concentrated water discharging pipeline to pass along the front side is avoided.

Because the external water inlet 31, the external water discharge port 51 and the positions of the six filter container butt joint water gaps 11a, 11b, 12a, 12b, 13a and 13b corresponding to the three preposed filter containers are relatively fixed, the specific positions of the preposed filter channels connecting the head end 1a and the tail end 1b are determined, the positions of the seven water passing electric control valves 20, 21, 22, 23, 24, 25, 26 and 27 are relatively determined, and related pipelines are connected according to a water path structure diagram shown in figure 3 to form a corresponding double-channel single-layer rigid pipeline system pipeline structure layout 10.

The two-channel single-layer rigid pipeline system pipeline layout shown in fig. 4, 5 or 6 is replaced with the two-channel single-layer rigid pipeline system pipeline structure layout 10 for the pre-filter channel in fig. 1 or 2, so that a corresponding new upper-layer pipeline structure schematic diagram can be obtained.

Shown in FIG. 7: the waterway switching schematic diagram of the double-channel single-layer rigid pipeline system with the filtering backflushing mode is arranged corresponding to the three preposed filtering liners. Three external pipelines: a preposed water inlet pipeline 3, a preposed water outlet pipeline 4 and a backflushing pipeline 5. A (first stage) water inlet electric control valve 20, a first stage (raw water) backflushing water inlet electric control valve 21 and a first stage water outlet electric control valve 25 which are used for the first stage preposed filter container 11; a second-stage water inlet electric control valve 24, a second-stage filtering backflushing water inlet electric control valve 22 and a second-stage water outlet electric control valve 26 which are used for the second-stage preposed filter container 12; a second-stage water inlet electric control valve 24, a third-stage filtering backflushing water inlet electric control valve 23 and a third-stage water outlet electric control valve 27 which are used for the third-stage preposed filter container 13.

And (3) a filtering mode: the first and second-stage water inlet electric control valves 20 and 24 and the three preposed filter containers 11, 12 and 13 are conducted, and other water passing electric control valves are closed.

Raw water backflushing mode: the first-stage backflushing water inlet electric control valve 21, the first-stage prepositive filter container 11 and the first-stage water outlet electric control valve 25 are conducted, and the water inlet electric control valve 20 is closed to form a raw water backflushing mode of the first-stage prepositive filter container 11.

A filtering backflushing mode: the first-stage water inlet electric control valve 20, the first-stage prepositive filter container 11, the second-stage backflushing water inlet electric control valve 22, the second-stage prepositive filter container 12, the second-stage water outlet electric control valve 26 are sequentially communicated, and the second-stage water inlet electric control valve 24 is closed to form a filtering backflushing mode that the first-stage prepositive filter container 11 passes water in the forward direction but the second-stage prepositive filter container 12 passes water in the reverse direction.

And the first-stage water inlet electric control valve 20, the first-stage prepositive filter container 11, the third-stage backflushing water inlet electric control valve 23, the third-stage prepositive filter container 13 and the third-stage water outlet electric control valve 27 are sequentially communicated, and the second-stage water inlet electric control valve 24 is closed to form a filtering backflushing mode that the first-stage prepositive filter container 11 passes water in the forward direction but the third-stage prepositive filter container 13 passes water in the reverse direction.

The raw water backflushing water path switching diagrams shown in attached figures 1, 2, 8-10 and 7 are combined, a third-stage preposed filter liner is arranged at the front position, the corresponding first-stage preposed filter liner and the second-stage preposed filter liner are respectively arranged at the middle position and the rear position, a structural mode that a group of concentric inner and outer butt water receiving pipes with different diameters are in coaxial butt joint with a water inlet and a water outlet of a preposed filter liner with corresponding structural modes, and a backflushing pipeline layout with front and rear double backflushing pipeline connectors are adopted.

Because the external water inlet 31, the external water discharge port 51 and the positions of the six filter container butt joint water gaps 11a, 11b, 12a, 12b, 13a and 13b corresponding to the three preposed filter containers are relatively fixed, the specific positions of the preposed filter channels connecting the head end 1a and the tail end 1b are determined, the positions of the seven water passing electric control valves 20, 21, 22, 23, 24, 25, 26 and 27 are relatively determined, and related pipelines are connected and arranged according to a water path structure diagram shown in the attached figure 7 to form a corresponding double-channel single-layer rigid pipeline system pipeline structure layout 10.

By replacing the two-channel single-layer rigid piping system piping structure 10 for the pre-filter channel in fig. 7 with the two-channel single-layer rigid piping system piping structure 10 shown in fig. 8, 9 or 10, a corresponding new upper-layer piping structure diagram can be obtained.

Unlike the accompanying fig. 4-6, which are obtained from the connecting lines of the associated water passing electric control valves in fig. 3, the associated water passing electric control valves surrounding the second and third pre-filter containers 12, 13 in fig. 8-10 are connected as shown in fig. 7.

On the basis of the attached figures 8-10, a group of concentric inner and outer butt water inlets with different diameters, which butt joint two water inlets of a front filter liner, in an upper layer related pipeline is changed into two butt water inlets at two positions, namely, a pipeline layout structure schematic diagram of a double-channel single-layer rigid pipeline system shown in the attached figures 11-13 is formed.

The water inlet end of the second stage backflushing water inlet electric control valve 22 in the attached drawing 7 is changed to the water outlet end of the third stage backflushing water inlet electric control valve 23, and the water path switching schematic diagram of the double-channel single-layer rigid pipeline system with the filtering backflushing mode in the attached drawing 14 is obtained.

In fig. 15 and 16, the pipeline structure layout of the dual-channel single-layer rigid pipeline system shown in fig. 15 is obtained by arranging the pipelines according to the waterway switching schematic diagram shown in fig. 14 on the basis of fig. 8. On the basis of fig. 13, the pipeline is arranged according to the waterway switching schematic diagram shown in fig. 14 to obtain the pipeline arrangement structure schematic diagram of the dual-channel single-layer rigid pipeline system shown in fig. 16.

In fig. 1 to 16, a structural mode is adopted in which the third-stage front filter container 13 is arranged at the front position, and the corresponding first-stage and second-stage front filter containers 11 and 12 are respectively arranged at the middle position and the rear position.

In fig. 17-25, the external water inlet and external water discharge are arranged in a remote mode. Adopt the leading inner bag 13 of straining of third level to arrange in the intermediate position, corresponding first, the leading inner bag 11 of straining of second level, 12 are located the back respectively, the structural mode of front position, the recoil pipeline 5 of corresponding binary channels individual layer rigid pipe-line system sets up two preceding, back recoil pipeline interfaces, connect first order water automatically controlled valve 25 water outlet end and second respectively, tertiary water automatically controlled valve 26, 27 water outlet end, and the pipeline overall arrangement of relevant water automatically controlled valve of connecting in series constitutes the recoil mode to the leading inner bag 11 of straining of first level, and the filtration recoil mode to the leading inner bag 12 of straining of second level or the leading inner bag 13 of straining of third level, wherein:

in fig. 17, on the basis of fig. 1, two vertical crossing butt-joint water gaps are arranged on the front water outlet pipeline 4 along two sides of the rear section 7a of the concentrate discharge pipeline, are in butt joint with two vertical water gaps of the n-type pipeline crossing device, and are fixedly connected with each other by fastening standards; the n-shaped pipeline crossing device is connected in series in the preposed water outlet pipeline 4, and the rear section 7a of the concentrated water discharge pipeline passes through a rigid pipeline arranged between crossing butt joint water gaps which are respectively butted with two vertical water gaps of the corresponding n-shaped pipeline crossing device and is connected with an external water discharge and discharge water gap 51.

The n-type pipeline crossing device for pipeline crossing can be a normally-on type water passing control component including a water passing electric control component and provided with a mounting structure, such as a preferred flow sensor 8a, a flow switch (not shown) or a high-pressure switch 8b or a water passing electric control valve 2 or a check valve 8c, or can be an n-type pipeline crossing structure provided with a mounting structure.

Further, the n-type pipe cross device connected in series to the rear stage 7a of the concentrate discharge pipe may be a concentrate discharge flow rate control device and a wastewater ratio as the concentrate discharge flow rate control device.

In order to prevent bacteria and viruses entering from the external discharge water port from spreading inwards along the rear section 7a of the discharge concentrated water pipeline, the discharge electric control valve 29 is arranged near the external discharge water port 51, and a discharge concentrated water detection device 8d connected to the rear section 7a of the discharge concentrated water pipeline and used for detecting the water discharged from the external discharge water port 51 is arranged at the water inlet end of the discharge electric control valve 29. The discharge concentrate detection device 8d may be a low-voltage switch, a high-voltage switch 8b, a flow sensor 8a (flow switch), or a combination device of the above-mentioned water passing electric control components. The device for detecting the discharged concentrated water is mainly used for the dynamic automatic detection of a water passing control part including a water passing electric control part in a machine.

The water outlet end of the pure water changing electric control valve 28a is connected with the water inlet end of the discharge electric control valve 29, and then the double bacteria isolation control is carried out by arranging two water passing electric control valves between the pure water pipeline 6 and the external discharge water port 51.

Considering that the second-stage prepositive filter liner is mostly provided with granular activated carbon filter materials, and the water passing mode filter effect is better when the granular activated carbon filter materials pass through the second-stage prepositive filter liner from bottom to top, an inner butt joint water port which is butted with a vertical pipeline communicated with the lower end of the second-stage prepositive filter liner 12 at the central position is set as a water inlet 12a, and an outer butt joint water port correspondingly communicated with the upper end of the second-stage prepositive filter liner is set as a water outlet 12b. In this case, the connection relationship of water paths is not changed by exchanging concentric inner and outer opposite water receiving ports with different diameters. The piping layout shown in fig. 17 shows a preferred embodiment of the present case.

In addition, in the attached figure 17, six reserved structures 96 which are used for movably connecting the upper cover or the upper device of the machine with the lower filter container cabin through a loose joint device are arranged along the periphery. The upper layer of the overhead module associated piping structure and the water control components involved avoid this reserved structure 96.

In fig. 18-25, on the basis of the dual-channel single-layer rigid pipeline system related to the pre-filter cartridge in fig. 17, eight derived pipeline layout diagrams are formed by combining and configuring a group of concentric inner and outer water gaps or a group of split water gaps with different diameters adopted by each of the three pre-filter cartridges 1.

Fig. 26 shows a schematic diagram of the waterway structure used in fig. 17, wherein:

the external water purifying port and the connecting pipeline are connected in a preposed water outlet pipeline 4 at the water inlet end of the booster pump.

The concentrated water discharge detection device 8d may adopt either water pressure detection control (high and low pressure switches) or flow rate detection control (flow sensor 8a, flow rate switch), or combination control of water pressure detection control and flow rate detection control.

The water purification detection device 8e adopts water pressure detection control, can adopt a high-voltage switch 8b or a low-voltage switch, and is matched with a booster pump or a water delivery pump. In addition, when the first and second water inlet electronic control valves 20 and 24 are normally open type water passing electronic control valves, the purified water detection device 8e may further use the flow sensor 8a or the flow switch to collect corresponding control signals.

The water outlet ends of the pure and pure water changing electric control valves 28a and 28 in the figures 17 and 26 are connected with the water inlet end of the discharge electric control valve 29; the water outlet ends of the pure and clean water changing electric control valves 28a and 28 in the attached figure 1 are connected with the water outlet end of the discharge electric control valve 29. The water outlet end of the pure water changing electric control valve 28a in fig. 2 is connected to the water outlet end of the discharge electric control valve 29, and the water outlet end of the pure water changing electric control valve 28 is connected to the water inlet end of the discharge electric control valve 29.

Fig. 27 is a schematic view showing a waterway structure in which the external water purifying port and the water purifying detection device are connected to the pre-positioned water outlet pipeline 4 at the water outlet end of the booster pump, and the water outlet end of the water purifying and water changing electric control valve 28 is connected to the water inlet end of the discharging electric control valve 29.

On the basis of fig. 17, the positions of the downward butt- joint water outlets 43 and 44, which are butt-jointed with the water inlet and the water outlet of the booster pump, and the front water-replacement electric control valve 28, which are arranged on the front water outlet pipeline 4 in fig. 2 and 27, and the purified water detection device, which is connected with the water outlet of the booster pump and is connected with the water outlet 44, can be adjusted to obtain a corresponding pipeline layout schematic diagram. At this time, the water purification detection device may employ either a high-voltage switch or a flow sensor (flow switch).

In the operation process of the water purifier, the water inlet electric control valve 20 or the second-stage electric control valve 24 for controlling the pre-filtering channel in the double-channel single-layer rigid pipeline system is selected to be switched and communicated with the water return electric control valve 29b for controlling the water outlet of the concentrated water discharging cavity 92.

As an improvement, 1-6 Total Dissolved Solids (TDS) probes can be arranged for water quality detection at six positions of a preposed water inlet pipeline, a secondary preposed filter liner water outlet pipeline, a booster pump water inlet end, a reverse osmosis membrane filter liner pure water butt joint water gap and an external pure water gap, and 6 TDS probes T1-T6 are arranged as shown in the attached figures 1, 2, 17, 26 and 27.

In each figure relating to the pipeline structure layout of a double-channel single-layer rigid pipeline system, a circle is used for representing a water inlet butt joint water gap of a water passing electric control valve for a water passing electric control valve butt joint water gap; 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 water passing requirement).

Example 11. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the upper module is arranged between the front water outlet pipeline 4 and the concentrate discharge pipeline 7 and is provided with a through hole structure 94 and a pendulum shaft seat fastening structure 95 which are matched with a vertical displacement device (not shown) corresponding to the central part of the lower filter chamber. The through hole structure 94 and the swing shaft seat fastening structure 95 correspond to a support structure (not shown) provided on the upper end surface of the reverse osmosis membrane filter cartridge 14 in the wet chamber structure 92.

The through hole structure and the swing shaft seat fastening structure correspond to a vertical shifting device provided with a rotating body with a control handle and a cam, a swing shaft and a shaft seat, and a supporting structure, or correspond to a rotating body with a control handle, a swing shaft, a shaft seat of a variable-track swing hook rotating around the swing shaft, a supporting structure and a vertical shifting device of a swing column; the lower filter container bin or a supporting structure arranged on the upper end face of a reverse osmosis membrane filter container in the lower filter container bin or is in movable fit with a rotating body with a control handle and a cam and a swing shaft and a shaft seat which are fixed on the through hole structure of the upper module and the fastening structure of the swing shaft seat, or is in movable fit with a rotating body with a control handle and a swing shaft which are fixed on the through hole structure of the upper module and the fastening structure of the swing shaft seat and a rotating body with a track-changing swing hook which rotates around the swing shaft and a shaft seat, so that the vertical fit distance between the upper module and the lower filter container bin is changed.

The water purifier provided with the vertical shifting device comprises a filtering channel, a lower filtering liner bin and an upper module, wherein the filtering channel is formed by connecting a plurality of filtering liners and relevant water passing control components through water passing pipelines to form normal operation of each filtering liner, the lower filtering liner bin is internally provided with a fastening device for fixing the filtering liners, is connected with a lower water passing pipeline and is provided with an upward opposite water receiving port, and the upper module is connected with an upper water passing pipeline and is provided with a downward opposite water receiving port; the upper module moves from top to bottom to be matched with the local corresponding part of the lower filter container bin, and the upper module and the lower filter container bin are matched at a far position which corresponds to the position that the pipe walls of the water gaps of the upper butted water gaps and the lower butted water gaps are in local butt joint and contact with the water gap sealing element, but the water gap sealing element is not in a normal sealing matching state to form a to-be-butted state of a separable loose joint sealing pipeline; the close position of the upper module matched with the lower filter liner bin corresponds to the butt joint state of the upper butt joint water gap and the lower butt joint water gap, and the butt joint state of the loose joint sealing pipeline is formed by the sealing matching state of the pipe wall butt joint gap of the sealing water gap of the water gap sealing element entering the butt joint state; the water gap sealing element is arranged on the downward butt water gap structure or the upward butt water gap pipe wall.

The water purifier not only can comprise a rotating body with a swing shaft and a cam, a control handle, a shaft seat and a vertical displacement device of a supporting structure; the cam is provided with corresponding far and near positions according to the distance between the edge profile and the axis of the pendulum shaft (the distance between the edge profile on the same vertical surface and the axis of the pendulum shaft); the close positions of the cams arranged on the upper shaft seat and the pendulum shaft of the upper module are in contact fit with the supporting structure arranged on the lower filter container cabin, and the close position corresponding to the fit of the upper module and the lower filter container cabin is the butt joint state of the loose joint sealed pipeline; the handle drives the cam to swing to a far position from a near position around a swing shaft on the shaft seat: the remote position of the cam is in contact fit with the supporting structure of the lower filter container cabin, and the remote position corresponding to the matching of the upper module and the lower filter container cabin corresponds to the butt joint state of the loose joint sealing pipeline and is returned to the butt joint state.

As an improvement, the swing hook also comprises a track-changing swing hook linked with the cam; the lower filter liner bin is provided with a swing column; the rail-changing swing hook corresponding to the swing shaft is in a non-equidistant circular arc profile, and the front end of the rail-changing swing hook corresponds to the swing column of the lower filter tank cabin; when the handle drives the cam and the orbit-changing pendulum hook to swing around the pendulum shaft on the shaft seat, the orbit-changing pendulum hook is inserted into the far side of the pendulum post of the lower filter liner bin and is in splicing fit with the pendulum post, then the upper module is forced to move downwards from the far position correspondingly matched with the lower filter liner bin through the contact of the outline of the orbit-changing pendulum hook and the pendulum post and is positioned at the close position correspondingly matched with the lower filter liner bin, the corresponding movable connection sealing pipeline enters a butt joint state from a butt joint state to be achieved, and the close position of the cam is in contact fit with the supporting structure of the lower filter liner bin; the handle drives the cam to reversely swing around a swing shaft on the shaft seat to a far position to replace the near position to be in contact fit with the supporting structure of the lower filter container cabin, the orbit-changing swing hook is withdrawn from the insertion fit with the swing column, and the far position corresponding to the matching of the upper module and the lower filter container cabin corresponds to the loose joint sealing pipeline to be withdrawn to a state to be butted.

As a further improvement, the transverse swing post is arranged on the supporting structure; the near side of the pendulum post close to the pendulum shaft is provided with a matching surface in contact fit with the cam, and the far side of the pendulum post far away from the pendulum shaft is provided with an inserted insertion space for the rail-changing pendulum hook.

The water purifier also comprises a rotating body provided with a swing shaft and a track-changing swing hook rotating around the swing shaft, a control handle, a shaft seat, a supporting structure and a vertical displacement device of a swing column; the orbit-changing swing hook corresponding to the swing shaft is in a non-equidistant circular arc profile, and corresponds to the swing column on the supporting structure of the lower filter container cabin through the front ends of the orbit-changing swing hooks arranged on the upper module shaft base and the swing shaft to be the far position of the orbit-changing swing hook; the handle drives the orbit-changing swing hook to swing around a swing shaft arranged on the shaft seat of the upper module, the orbit-changing swing hook is inserted into the far side of a swing column of the lower filter container cabin and is in plug-in fit with the swing column to form the near position of the orbit-changing swing hook, then the upper module is forced to continuously move downwards and is matched with the lower filter container cabin in place through the contact of the outline of the orbit-changing swing hook and the swing column, and the loose joint sealing pipeline enters the butt joint state formed by the sealing fit state of the butt joint gap of the sealing water port pipe wall of the water port sealing element from the butt joint state and corresponds to the near position of the upper module matched with the lower filter container cabin.

For the water purifier provided with the vertical displacement device, the lower filter container cabin comprises a filter container; the supporting structure or the supporting structure and the swing post which are arranged on the lower filter container cabin can be arranged on the filter container and correspond to the rotating body arranged on the upper module.

Embodiment 12, on the basis of embodiments 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11, the bottom of the upper module is provided with an external power jack structure 91 vertically penetrating above the vertical undercut structure 9 of the corresponding lower bladder chamber. An external power adapter plug is mutually inserted into a power socket fixed on the external power supply jack structure 91, and an external power supply is introduced into the upper module (or can enter the upper control cabin module). The vertical power supply jack structure arranged on the upper module avoids the defects that the mould is complex and high in cost and the appearance shell shape of the machine is influenced and the defects that the shell of the power supply jack structure arranged on the side wall of the shell of the water purifier base is required to be subjected to transverse 'ribbing' process mode in the injection molding process.

In the above embodiments, the external water gap disposed on the upper module may adopt the following four modes:

in the first mode: the external water inlet 31 is disposed at a position on the front side and away from the rear side, the corresponding external discharge water port 51 is disposed at a position on the front side and inside the external water inlet 31 (between the external water inlet 31 and the external pure water port 61), and the corresponding external pure water port 61 is disposed at a position on the rear side or on the front side and close to the rear side.

In the second mode: the external water inlet 31 is disposed at a position on the front side and away from the rear side, the corresponding external water discharge port 51 is disposed at the rear side and located at a position between the external water inlet 31 and the external pure water port 61, and the corresponding external pure water port 61 is disposed at the rear side.

The third mode: the external drainage outlet 51 is arranged on the front side and is far away from the rear side, the corresponding external water inlet 31 is arranged on the front side and is positioned on the inner side of the external drainage outlet 51 (between the external drainage outlet 51 and the external pure water inlet 61), and the corresponding external pure water inlet 61 is arranged on the rear side or on the front side and is close to the rear side.

The fourth mode: the external drainage outlet 51 is arranged at the position of the front side and far away from the rear side, the corresponding external water inlet 31 is arranged at the rear side and is positioned between the external drainage outlet 51 and the external pure water port 61, and the corresponding external pure water port 61 is arranged at the position of the rear side.

As an improvement to the above four modes of external connection, an external connection water purifying port 41 is arranged. The external pure water port 41 is disposed at a position outside the external pure water port 61 and away from the front side, or at a position inside the external pure water port 61 (between the external pure water port 61 and the external water inlet 31 and the external water discharge port 51).

In the scheme, water passing pipelines (including the filter liners) arranged in the lower filter liner bin are all regarded as bottom-layer pipelines.

The lower filter container cabin or the upper module is directly connected into a whole through the loose joint device, or the upper module is arranged in the upper module and then is connected into a whole with another upper cover (the upper module is a combined structure mode that the base is provided with the upper cover, the lower module is the same as the upper module) or the upper device through the loose joint device and limits the vertical movement of the built-in upper module, or the upper module is partially arranged in the upper module and then is connected into a whole with another upper cover or the upper device through the loose joint device and limits the vertical movement of the upper module with part exposed. The upper module can be separated from the lower filter tank by disengaging the loose joint device.

The movable joint device is at least one of a swing locking device, a locking hook device, an elastic buckling device, a rotating and clamping structure or a thread structure, and is the prior art.

Preferred modes: the upper module adopts a combined structure mode that the base is provided with the upper cover, the upper cover and the lower filter container bin are connected into a whole through the loose joint device, and the vertical movement of the upper module arranged in the lower filter container bin is limited. The upper module can be arranged in the lower filter container cabin, and the lower part of the upper module can be arranged in the lower filter container cabin, and the upper part of the upper module is shielded by the upper cover.

In this case, in order to meet the requirements of the connection with the relevant pipeline at a specific position, the rotation or mirror image processing may be performed on fig. 2, 4-6, 8-13, and 15-25 to obtain the corresponding derivative pipeline layout structure.

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 preposed filter containers placed in the middle of the other preposed filter container to form a triangular structural layout, and the three preposed 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 upper module.

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 the normally-open type water passing electric control valve. In the above embodiments, a normally open type water passing electric control valve may be used, and the opening or closing is controlled by an additional electric control device.

In the present case, set up water inlet, pure mouth of a river and arrange the reverse osmosis membrane filter courage at dense mouth of a river. The electric control device for controlling the related water passing electric control components including the electric control valve and the booster pump and the loose joint device for connecting the upper module and the lower filter tank cabin into a whole are the prior art, and the description is not repeated in the scheme.

Claims (10)

1. A layout method of upper layer rigid pipeline of water purifier with double-layer rigid pipeline structure is provided, which is a double-layer rigid pipeline structure composed of a lower filter liner bin internally provided with a filter liner and a booster pump and provided with a bottom layer pipeline and an upper module matched with the lower filter liner bin and provided with an upper layer related pipeline; the double-layer rigid pipeline structure is sequentially connected with 1-2 preposed filter liners, reverse osmosis membrane filter liners and water inlets and water outlets of postposition functional filter liners in series through additional water ports to form a filter channel, wherein the part connected with the preposed filter liners in series is the preposed filter channel; the prepositive filtering channel is connected with a prepositive water inlet pipeline, an external water inlet and a prepositive water outlet pipeline with a downward water outlet respectively from the head to the tail, and is connected with a reverse osmosis membrane filter liner through a booster pump; a vertical undercut structure is arranged in the middle of the rear side wall of the lower filter liner bin, a reverse osmosis membrane filter liner is arranged in front of the vertical undercut structure, a front filter liner and a rear functional filter liner are respectively arranged on two sides of the reverse osmosis membrane filter liner, and then a bin body part structure for placing each filter liner is divided into a front side corresponding to the front filter liner and a rear side corresponding to the rear functional filter liner along the length direction at the position of the axis of the reverse osmosis membrane filter liner; the relevant pipeline of corresponding overhead module and upper strata also correspondingly divide into leading side and rearmounted side to lay the relevant pipeline of upper strata in the top that corresponds each filter bag, and the top that corresponds vertical undercut structure sets up three vertical external mouth of a river and corresponding connecting line: an external water inlet and an external water discharge outlet which are arranged at or close to the front side, and an external pure water inlet which is arranged at or close to the rear side, and the front end of the front filtering channel above the corresponding front filtering liner is connected with the external water inlet; the reverse osmosis membrane filter liner is provided with an upward pure water port and a concentrated water discharge port which are vertically butted with a downward butted water port of an upper-layer related pipeline of the upper-layer module; the prepositive water outlet pipeline is butted with an upward water inlet connected with the water inlet end of the booster pump through a downward water inlet; the water outlet end of the booster pump is connected with a downward water inlet of the reverse osmosis membrane filter liner through a bottom pipeline; in the upper layer related pipeline, a pure water butt joint water gap and a pure water pipeline which are butt joint with the pure water gap are arranged at the rear side, are butt joint with an upward water gap of the rear functional filter liner through a downward water gap, and are connected with an external pure water gap through a water outlet pipeline of the rear functional filter liner; the back section of the discharge concentrate pipeline connected with the water outlet end of the discharge concentrate flow control device is distributed along the front side and connected with an external discharge outlet; the external water inlet and the external water discharge outlet are respectively arranged in a remote mode at a position far away from and near the external pure water outlet or in a close mode at a position near to and far from the external pure water outlet, wherein for the remote mode, the rear section of the concentrated water discharge pipeline or the external water discharge outlet is connected across the front water discharge pipeline or the external water discharge outlet is connected around the front filtering channel and the outer side of the external water inlet; for the proximity mode, the rear section of the concentrated water discharge pipeline is connected with an external water discharge outlet around the outer side of the front filtering channel.

2. The method for laying the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 1, wherein the rear section of the concentrate discharge pipeline and the front water outlet pipeline in the remote connection mode are mutually crossed through n-shaped pipeline crossing devices which are additionally arranged and fixed on the upper module: the upper module is provided with two vertical crossing butt joint water gaps which are arranged on two sides of one of the two pipelines of the front water outlet pipeline and the rear section of the concentrated water discharge pipeline and are in butt joint with the two vertical water gaps of the n-type pipeline crossing device and are fixedly connected with each other in a fastening standard; the n-type pipeline crossing device is connected in series with the front water outlet pipeline, the rear section of the concentrated water discharge pipeline passes through a rigid pipeline arranged between crossing butt joint water ports of two vertical water ports of the corresponding n-type pipeline crossing device in respective butt joint and is connected with an external water discharge port, or is connected in series with the rear section of the concentrated water discharge pipeline, and the front water outlet pipeline is connected with the water inlet end of the booster pump through a rigid pipeline arranged between crossing butt joint water ports of two vertical water ports of the corresponding n-type pipeline crossing device in respective butt joint.

3. The method for laying the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 1 or 2, characterized in that a backwater reuse system with an inlet cavity electric control valve, a concentrated water discharge cavity, a backwater electric control valve and a discharge electric control valve is further arranged; the lower filter liner bin is a double-cavity structure which is formed by respectively arranging a booster pump and a dry cavity structure and a wet cavity structure for discharging concentrated water in a separated and connected mode; the water outlet end of the water inlet pipe is connected with the water inlet end of the wet cavity structure, the water inlet end of the water inlet pipe is connected with the water outlet end of the wet cavity structure, the water outlet end of the water inlet pipe is connected with the water inlet end of the water outlet pipe, the water outlet end of the water outlet pipe is connected with the water outlet port of the water outlet pipe, and the water outlet end of the water return pipe is connected with the water inlet end of the booster pump; the concentration discharge water cavity is a single wet cavity structure for storing and discharging concentration water or a wet cavity structure for storing and discharging concentration water and internally provided with a filter liner.

4. The method for laying the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 3, wherein the electric discharge valve is arranged between the external discharge outlet and the front water outlet pipeline.

5. The layout method of the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 1, 2 or 4, characterized in that a water changing pipeline connected with a water changing electric control valve in series is further arranged; arrange the water electrovalve or the pure water that trades on the overhead module in and trade water electrovalve or preceding water electrovalve of replacement, wherein trade water electrovalve to the pure water, or be located the rearmounted side or be located the position department that corresponds the trunk cavity structure, corresponding pure water trades water pipeline water inlet end and connects pure water pipeline: or the water inlet end of the post-positioned functional filter liner is connected, or the water outlet end of the post-positioned functional filter liner is connected, and the water outlet end of the pure water exchange pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external drainage outlet or connected with the external drainage outlet through an additional drainage electric control valve; for the front replacement water electric control valve, or the front replacement water electric control valve is positioned at the front side or the rear side or the position corresponding to the dry cavity structure, the water inlet end of the corresponding front replacement water pipeline is connected with a front water outlet pipeline, and the water outlet end of the front replacement water pipeline is connected with the rear section of the concentrated water discharge pipeline: or directly connected with an external water discharge outlet or connected with the external water discharge outlet through an additional discharge electric control valve.

6. The method for laying the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 1, 2 or 4, characterized in that an external water purifying port is further arranged; the external pure water port is adjacent to the external pure water port, or is arranged at the position outside the external pure water port and far away from the front side, or is arranged at the position between the external pure water port and the external water inlet and the external water discharge port; the external water purifying port is butted with an upward water port arranged on a preposed water outlet pipeline at the water inlet end of the booster pump through a pipeline provided with a downward water port, or is butted with an upward water port additionally arranged on a preposed water outlet pipeline connected with the water outlet end of the booster pump through a pipeline provided with a downward water port.

7. The method for arranging the upper-layer rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 1, 2 or 4, wherein the method is further provided with a control related electric control valve for switching on or off a related water channel so as to form a double-channel single-layer rigid pipeline system; the double-channel single-layer rigid pipeline system is provided with a water inlet electric control valve which is connected in series with a water inlet pipeline of the relative preposed filter liner, a backflushing water inlet electric control valve of which the water outlet end is connected with the water outlet end of the relative preposed filter liner, and a water outlet electric control valve of which the water inlet end is connected with the water inlet pipeline of the relative preposed filter liner and is arranged behind the water inlet electric control valve and the water outlet end is connected with an external water outlet through a backflushing pipeline; the waterway control mode of the double-channel single-layer rigid pipeline system is a backflushing mode which controls to conduct a water inlet electric control valve and close a backflushing water inlet electric control valve and a water outlet electric control valve so as to control the forward water passing of the front filter container connected in series, or the backflushing mode which controls to conduct a related backflushing water inlet electric control valve and a related water outlet electric control valve and closes a related water inlet electric control valve so as to control the single front filter container to reversely pass water and to control the single front filter container to be backflushed and to control the water outlet electric control valve connected with a pipeline at the water inlet end of the front filter container to be backflushed and the water outlet end of the water outlet electric control valve connected with the pipeline at the water inlet end of the backflushing water inlet electric control valve to be backflushed and to connect the water inlet end of the backflushing water inlet electric control valve with the water inlet end of the water inlet electric control valve and close the related water inlet electric control valve so as to form the backflushing mode of the backflushing water reverse passing of the filter container, or the forward water passing of the preposed water inlet pipeline and the preposed filter container in the front is controlled and switched to be conducted to the water inlet end and the water outlet end of a second-stage preposed filter container to be backflushed, the water inlet end and the water outlet end of a second-stage backflush water inlet electric control valve of the backflush pipeline are respectively connected with the water inlet end of a second-stage water outlet electric control valve of the backflush pipeline, the second-stage water inlet electric control valve is closed and connected in a pipeline between the preposed filter container and the postpositive filter container, and the water inlet end of the second-stage backflush water inlet electric control valve is connected with the water inlet end of the second-stage water inlet electric control valve to form a filtering backflush mode of forward water passing of the preposed filter container and reverse water passing of the postpositive filter container.

8. The method for arranging the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to claim 7, wherein the pre-filter channel is provided with three pre-filter liners; along the lower preposed filter container storehouse width set up two preceding filter containers in front and back and with another adjacent three preposed filter containers of the preposed filter container combination be triangle structure overall arrangement and place in the below of overhead module: the third-stage prepositive filter container is arranged at the front position or the middle position, wherein for the mode that the third-stage prepositive filter container is arranged at the front position, the corresponding first-stage prepositive filter container and the second-stage prepositive filter container are respectively arranged at the middle position and the rear position; for the mode that the third-stage preposed filter container is arranged at the middle position, the corresponding first-stage preposed filter container and the second-stage preposed filter container are respectively arranged at the rear position and the front position; the upper layer related pipeline is provided with corresponding filter liner butting water ports which are butted with respective water inlets and water outlets of the three filter liners and determine related pipeline layout paths, and two butting water ports of one group of filter liner butting water ports are coaxial butting water inlets and water outlets which are concentric and have different diameters and are provided with corresponding structural modes with the front filter liner, or the two butting water ports are separately arranged and are butted with the water inlets and the water outlets which are provided with the corresponding structural modes with the front filter liner; the double-channel single-layer rigid pipeline system corresponding to the three preposed filter liners is a filtering mode corresponding to the three preposed filter liners for sequentially passing water in a forward direction, or a raw water backflushing mode corresponding to the three preposed filter liners for backflushing independently, or a filtering backflushing mode corresponding to the forward water passing of the preposed filter liner at the front stage and the backward water passing of the preposed filter liner at the rear stage of the second-stage or the third-stage.

9. The method for arranging pipelines of the front-end seat of the water purifier with the front-end electric control filtering backflushing system according to claim 8, wherein the backflushing pipeline and the rear section of the concentrated water discharging pipeline share one pipeline, and the tail end of the backflushing pipeline is connected with an external water discharging outlet; the backflushing pipeline is connected in series in the back section of the concentrated water discharge pipeline, or two pipelines which are respectively connected with the water outlet ends of the water outlet electric control valves and are provided with two backflushing pipeline butt water inlets at two ends are respectively connected in the back section of the concentrated water discharge pipeline.

10. The method for arranging the upper rigid pipeline of the water purifier with the double-layer rigid pipeline structure according to the claim 1, 2, 4, 8 or 9, characterized in that a water outlet detection device is further arranged; the water outlet detection device is arranged in a pure water pipeline connecting a pure water butt joint water port and an external pure water port to form a pure water detection device, or is arranged in a pipeline between a preposed water outlet pipeline and an external pure water port to form a pure water detection device, or is arranged in a pipeline connecting the rear section of a concentrated water discharge pipeline and an external water discharge port to form a concentrated water discharge detection device, wherein for the pure water detection device, the pure water detection device is arranged in the preposed water outlet pipeline and is arranged at a high-pressure switch at the water outlet end of the booster pump, or is arranged in the preposed water outlet pipeline and is arranged at the water inlet end of the booster pump, and is connected with the water outlet end of the other concentrated water discharge cavity through a special water transmission pump in series connection, or is arranged in the preposed water outlet pipeline and is arranged at the water inlet end of the booster pump, and is connected with the water outlet end of the other concentrated water discharge cavity through the special water transmission pump in series connection; for the pure water detection device, the pure water pipeline connected with the pure water detection device is arranged in front of the preposed water outlet pipeline or behind the preposed water outlet pipeline.

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