CN112441670A - Water purifier water storage periodical water changing method during off-stream period - Google Patents
Water purifier water storage periodical water changing method during off-stream period Download PDFInfo
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- CN112441670A CN112441670A CN201910976709.8A CN201910976709A CN112441670A CN 112441670 A CN112441670 A CN 112441670A CN 201910976709 A CN201910976709 A CN 201910976709A CN 112441670 A CN112441670 A CN 112441670A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 1214
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001914 filtration Methods 0.000 claims abstract description 119
- 239000012528 membrane Substances 0.000 claims abstract description 86
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 81
- 238000007599 discharging Methods 0.000 claims abstract description 63
- 238000000746 purification Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 23
- 239000008213 purified water Substances 0.000 claims description 20
- 239000012141 concentrate Substances 0.000 claims description 16
- 238000011045 prefiltration Methods 0.000 claims description 14
- 230000007774 longterm Effects 0.000 claims description 3
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 4
- 241000700605 Viruses Species 0.000 description 4
- 241000607479 Yersinia pestis Species 0.000 description 4
- 239000003657 drainage water Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000001728 nano-filtration Methods 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the water treatment industry, in particular to the filtration of drinking water. The invention discloses a method for periodically changing water during the shutdown period of a water purifier. The water passing pipeline is connected with the water inlet electric control valve and is connected with a plurality of filter liners in series to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, the concentrated water discharge port of the reverse osmosis membrane filter liner is connected with a concentrated water discharge pipeline provided with a concentrated water discharge flow control device, the rear section of the concentrated water discharge pipeline is connected with an external water discharge port and an external discharge hose, the electric control device controls the operation of a water passing electric control component comprising a related electric control valve related to a filter channel, and a water changing electric control valve is arranged between the pure water pipeline and the rear section of the concentrated water discharge pipeline; when the filtering channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the water inlet electric control valve and the booster pump to operate and convey water into the reverse osmosis membrane filter liner according to the preset time interval and the timing length, and the water changing channel is formed by a concentrated water discharging pipeline, an external water discharging outlet and an external water discharging hose.
Description
Prior application title: water storage and regular water changing method during outage of water purifier
Prior application No.: 201910856834.5
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 water purifier that current set 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 moss and superficial algae and other plankton very easily and lead to appearing serious "secondary pollution", the foul water phenomenon appears even, seriously influence the follow-up use situation of machine, because the pollutant in water passing pipeline and storage water tank and mouth of a river corner structure department is difficult to discover and clear away the processing, and do not have simply again, convenient user self-detection means, consequently even if changed whole filter courages afterwards also be difficult to ensure water treatment capacity and the effect that the water purifier originally should have, and make the user produce uneasy fear even after that. The above-mentioned drawbacks and disadvantages make it difficult to widely popularize the water purifier.
Disclosure of Invention
The invention mainly solves the technical problem of providing a simple and practical method for periodically changing water stored in a water purifier during the shutdown period so as to overcome the defects and shortcomings.
A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, the electric control device controls a filtering channel to relate to a water passing electric control component comprising a related electric control valve and a booster pump to operate, and the reverse osmosis membrane filter liner is characterized in that a water changing electric control valve is arranged between the pure water pipeline and the rear section of the concentrated water discharge pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in a shutdown period and the pure water outlet valve is closed, the electric control device controls the preposed filter liner and the booster pump to operate and convey water according to a preset time interval and a timing length, and the water flows through the external discharge water outlet and the external discharge hose after being converged along two paths of outlet water of the pure water port and the concentrated water outlet of the reverse osmosis membrane filter liner respectively to form a water changing channel: the pure water pipeline is converged with the rear section of the concentrated water discharge pipeline behind the concentrated water discharge flow control device through the water changing electric control valve and then is communicated with an external water discharge outlet and an external discharge hose, so that the filtering channel comprising the pure water pipeline and the concentrated water discharge pipeline are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, and an electric control device controls a filtering channel to relate to a water passing electric control component comprising a related electric control valve and a booster pump to operate; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in a shutdown period and the pure water outlet valve is closed, the electric control device controls the preposed filter liner and the booster pump to operate and convey water according to a preset time interval and a timing length, and the water flows through the concentrated water discharge flow control device, the external water discharge port and the external discharge hose after being converged along two paths of outlet water of the pure water port and the concentrated water discharge port of the reverse osmosis membrane filter liner respectively to form a water changing channel: the pure water pipeline is converged with the front section of the concentrated water discharge pipeline connected with the concentrated water discharge port through the water changing electric control valve and then communicated with an external water discharge port and an external discharge hose behind the concentrated water discharge flow control device, so that the filtering channel including the pure water pipeline and the concentrated water discharge pipeline are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the reverse osmosis membrane filter liner is characterized in that a pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, an electric control device controls a filtering channel to relate to a water passing electric control component comprising a relevant electric control valve and a booster pump to operate, and the reverse osmosis membrane filter liner is characterized in that the concentrated water discharge pipeline is connected in series with the concentrated water discharge flow control device with a bypass electric control valve which is a water changing electric; the control device of the discharge concentrated water flow controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water according to a preset fixed flow proportion, or controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water in a timing and long-term full-control manner; when the filtering channel is in a normal running state, a bypass electric control valve serving as a water changing electric control valve is in a non-water-passing closed state, and the outlet water of the reverse osmosis membrane concentrated water discharging port flows into the rear section of the concentrated water discharging control device through the concentrated water discharging flow control device according to a preset fixed flow proportion; when the filtering channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the prepositive filter liner and the booster pump to operate and convey water according to the preset time interval and the timing length, the concentrate discharge water port of the reverse osmosis membrane filter liner flows through the communicated bypass electric control valve, the external water discharge port and the external water discharge hose to form a water change channel to discharge water, and then the filtering channel including the pure water pipeline and the concentrate discharge pipeline are kept to have water fluidity and have better water quality condition until the filtering channel is relieved from the shutdown period.
A water inlet electric control valve is arranged in a water passing pipeline which is connected with the preposed filter liner in series; the water inlet electric control valve is positioned at the front end of the tandem connection preposed filter container, or positioned in a pipeline between the two preposed filter containers, or positioned at the rear end of the tandem connection preposed filter container.
The rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is provided with a double branch pipeline of a front concentrated water discharge storage tank: the bottom of the concentrated water discharging water storage tank connected with the rear section of the concentrated water discharging pipeline is provided with a discharge branch pipeline and a return water branch pipeline which are arranged in a rear position: the rear-mounted discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge pump, the rear-mounted water return branch pipeline is connected with a booster pump water inlet pipeline through a water return electric control valve which is connected in series, and the electric control device controls the water return electric control valve to be alternatively communicated with the water inlet electric control valve; when the filtering channel is in the shutdown period and the preposed filtering container is not in the water passing state, the electric control device controls the drainage pump to operate according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank out of the external drainage outlet through the conducted drainage branch pipeline, or until the concentrated water drainage level in the concentrated water drainage storage tank is lowered to the lower limit position, or until the filtering channel is released from the shutdown period state.
When the concentrated water level in the concentrated water discharging water storage tank drops to the limit position and the water discharging pump is closed, the concentrated water level is still in the control range of the fixed time length of the electric control device, the electric control device controls the filter channel, the water changing electric control valve and the concentrated water discharging pipeline to be conducted and run for water passing until the fixed time length control program of the electric control device is finished.
A method for changing water periodically during the stop of water purifier, wherein the water pipeline is connected in series with a plurality of filter containers including a preposed filter container and a reverse osmosis membrane filter container and a filter channel formed by a booster pump and is provided with a water inlet electric control valve, the water inlet end of a water purification pipeline with a water purification outlet valve is arranged in a pipeline between the water outlet end of the preposed filter container and the water inlet end of the booster pump to form a preposed water purification pipeline, or the water inlet end of the water purification pipeline is arranged in a pipeline between the booster pump and the reverse osmosis membrane filter container to form a post-positioned water purification pipeline; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, and a discharge branch pipeline and a return water branch pipeline are respectively arranged at the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device: the discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge electric control valve; the backwater branch pipeline is connected with a water inlet pipeline of the booster pump through a tank inlet electric control valve, a concentrated water discharging water storage tank and a backwater electric control valve which are connected in series in sequence, and the electric control device controls the backwater electric control valve for discharging water from the concentrated water discharging water storage tank to be alternatively communicated with the water inlet electric control valve; when the filtering channel is in a normal operation state, the front water replacement electric control valve is in a non-water closing state; when the filtering channel is in the shutdown period of closing the water inlet electric control valve, the electric control device controls the drainage device to run according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank from the communicated front replacement water electric control valve and the drainage branch pipeline to an external drainage outlet, or until the concentrated water level in the concentrated water drainage storage tank is lowered to a lower limit position, or until the filtering channel is released from the shutdown period state; the drainage device is additionally arranged on a drainage pump between the concentrated water drainage storage tank and the front purified water pipeline, or is connected with a booster pump at the water outlet end of the backwater electric control valve and the water inlet end of the rear purified water pipeline respectively.
When the concentrated water level in the concentrated water discharging water storage tank drops to the limit position and the water discharging device is still in the fixed time length control range of the electric control device when being closed, the electric control device controls the filtering channel and the water changing electric control valve to be conducted to run for water passing until the fixed time length control program of the electric control device is finished.
The water passing through the front filter containers in series is conducted or controlled by controlling the related electric control valves to form a front filter channel or a front backflushing channel aiming at the reverse water passing through a single front filter container, and then a double-channel pipeline system which is switched and conducted by selecting the front filter channel or the front backflushing channel through the related electric control valves is formed; the double-channel pipeline system comprises: the preposed water inlet pipeline is sequentially connected in series with the water inlet and the water outlet of each preposed filter container to form a preposed filter channel, and the water outlet end of the corresponding last preposed filter container is communicated with the preposed water outlet pipeline; the water inlet end and the water outlet end of the electric control valves corresponding to the number of the preposed filter liners are butted, wherein: the preposed water inlet pipeline is correspondingly connected with a group of water inlet ends serving as water inlet electric control valves, the water outlet end of one water inlet electric control valve is connected with the head end of the preposed filtering channel, and the water outlet ends of the other water inlet electric control valves are respectively communicated with the water outlet ends of the corresponding preposed filtering containers; the preposed backflushing pipeline is correspondingly connected with another group of water outlet electric control valves as respective water outlet ends of the water outlet electric control valves, and the respective water inlet ends of the water outlet electric control valves of the group are respectively communicated with the water inlet ends of the corresponding preposed filter liners; the electric control device controls the conduction of a water inlet electric control valve communicated with the head end of the preposed filtering channel and closes a group of water inlet electric control valves and a group of water outlet electric control valves to form the preposed filtering channel for positive water passing of each preposed filtering container connected in series; the electric control device controls a water inlet electric control valve and a water outlet electric control valve positioned in front of the water inlet electric control valve to be simultaneously conducted and closed, so that water is fed into the water inlet electric control valve connected with the water outlet end of the related preposed filter container, and then is discharged from a preposed backflushing channel through the water outlet end of the water outlet electric control valve connected with the water inlet end of the preposed filter container and a preposed backflushing pipeline; the double-channel pipeline system is either a three-pipeline external connection mode formed by arranging a front water inlet pipeline, a front water outlet pipeline and a front backflushing pipeline, or a two-pipeline external connection mode formed by arranging a front water inlet pipeline and connecting the front backflushing pipeline with the water outlet end of a front electric control valve arranged at the tail end of a front filtering channel, wherein for the three-pipeline external connection mode, the front backflushing pipeline is connected with the rear section of a concentrated water discharge pipeline; for the two-pipeline external connection mode, the water inlet end of a water purification pipeline with a water purification outlet valve is connected in a pipeline between a preposed water outlet pipeline and a preposed backflushing pipeline as well as the water inlet end of a booster pump to form a preposed water purification pipeline, and a water changing electric control valve is arranged between the water purification pipeline and the rear section of a concentrated water discharging pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in the period of shutdown, the electric control device controls the relevant electric control valve to conduct water according to the preset time interval and the timing length and to discharge the water by the external drainage outlet and the external drainage hose to form a water changing channel, wherein the part flowing through the two-channel pipeline system is as follows: the water flowing through the water inlet electric control valve is discharged by a water outlet electric control valve which is connected with the water outlet end of the water inlet electric control valve and a preposed backflushing pipeline, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter container is positively passed through water, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter container is reversely passed through water, or is discharged by the water changing electric control valve in the preposed water purifying pipeline after each preposed filter container is positively passed through water.
Setting a 'periodical water change' mode to enter or exit a change-over switch; when the change-over switch is switched to enter a 'regular water change' mode, the water purifier enters a regular water change mode for storing water during the shutdown period: the electric control device controls the starting of the water changing channel to conduct and run according to the preset time interval and the timing length.
The preset time interval is set according to the long and short grading of the time period during which the filtering channel is about to stop.
Compared with the waterway switching device of the existing water purifier, the waterway switching device of the invention has the following advantages: the water in the machine filter liner and the pipeline is periodically changed during the off period of the water purifier, so that the water in the filter channel and the related pipeline is ensured to have good fluidity and better water quality, and the phenomenon that dead water grows moss, floating algae and other plankton to cause secondary pollution is avoided. Not only can ensure the normal water treatment capacity and effect of the water purifier, but also can avoid the user from generating uneasiness and even distrust to the machine after the outage period.
Drawings
FIG. 1 is a water path schematic diagram of a water purifier provided with a water inlet electric control valve, a preposed filter liner, a reverse osmosis membrane filter liner, a pure water outlet valve, a concentrated water discharge flow control device and a water change electric control valve.
FIG. 2 is a water path schematic diagram of a water purifier provided with a water inlet electric control valve, a preposed filter liner, a dual-channel pipeline control system, a reverse osmosis membrane filter liner, a pure water outlet valve, a concentrated water discharge flow control device and a water change electric control valve.
FIG. 3 is a schematic diagram of a water path of a water purifier provided with a preposed electric control valve, a purified water outlet valve and a water changing electric control valve on the basis of the water path structure shown in FIG. 2.
FIG. 4 is a schematic diagram of a water path of a water purifier provided with a preposed discharge branch line with a water discharge electric control device, a water return branch line with a box inlet electric control valve, a concentrated water discharge storage tank and a water return electric control valve, a water discharge pump, a water change electric control valve and a front water replacement electric control valve on the basis of the water path structure shown in FIG. 3.
FIG. 5 is a schematic diagram of a water path of a water purifier in which the water inlet end of a water purification pipeline provided with a purified water outlet valve and the water inlet end of a front water replacement electric control valve in FIG. 4 are moved to the water outlet end of a booster pump and the water outlet end of the front water replacement electric control valve is connected with the water outlet end of a discharge electric control valve on the basis of the water path structure shown in FIG. 4.
Detailed Description
Example 1. The description is made with reference to fig. 1. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners 1 including a preposed filter liner 1a and a reverse osmosis membrane filter liner 1b and a booster pump 41 to form a filter channel and is provided with a water inlet electric control valve 20; the pure water port of the reverse osmosis membrane filter container 1b is connected with a pure water pipeline 6 and a pure water outlet valve 61, a concentrated water discharge flow control device 71 is arranged in a concentrated water discharge pipeline 7 connected with a concentrated water discharge port, the rear section 7b of the concentrated water discharge pipeline behind the concentrated water discharge flow control device 71 is connected with an external water discharge port 72 and an external discharge hose, and an electric control device (not shown) controls the operation of a water passing electric control component related to a filtering channel and comprising a related electric control valve 2 and a booster pump 41.
The method for changing the water periodically during the shutdown period of the water purifier also comprises the following steps: a water changing electric control valve 9 is arranged between the pure water pipeline 6 and the back section 7b of the concentrated water discharging pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve 9 is in a non-water closing state; when the filtering channel is in the shutdown period and the pure water outlet valve 61 is closed, the electric control device controls the preposed filter liner filtered water and the booster pump 41 to operate and deliver water according to the preset time interval and the timing length, and the two paths of outlet water are converged along the pure water port and the concentrated water outlet port of the reverse osmosis membrane filter liner 1b respectively and then flow through the external discharge water outlet 72 and the external discharge hose to form a water changing channel: the pure water pipeline 6 is converged with the rear section 7b of the concentrated water discharge pipeline behind the concentrated water discharge flow control device 71 through the water changing electric control valve 9 and then is communicated with the external water discharge outlet 72 and the external discharge hose, so that the filtering channel comprising the pure water pipeline 6 and the concentrated water discharge pipeline 7 are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
The preposed filter container 1a is arranged for filtering larger-particle silt and colloid in the filter channel so as to reduce the filtering load of the reverse osmosis membrane filter container 1 b.
As a modification, an electrically controlled valve 20 for water inlet can be provided to control the water inlet of the filtering passage. The water inlet electric control valve 20 can be arranged in a water passing pipeline of the tandem connection preposed filter container 1a, can be positioned at the front end and the rear end of the tandem connection preposed filter container 1a, and can also be positioned in a pipeline between the two preposed filter containers 1 a.
In all embodiments of the present disclosure, unless otherwise specified, the term "pure water line" may refer to all water passing lines behind the pure water port of the reverse osmosis membrane filter cartridge, rather than to only a section of the water passing line connected behind the pure water port of the reverse osmosis membrane filter cartridge. The reverse osmosis membrane filter liner is the filter liner with the highest filtering precision, so that even if a subsequent functional filter liner is arranged in a pure water pipeline, the screen mesh aperture of a filter material layer of the reverse osmosis membrane filter liner is far larger than that of the reverse osmosis membrane filter liner, and the interception of the outlet water can not be caused.
Similarly, the above expression also applies to the "drain line". The concentrate discharge pipe includes front and rear sections thereof, and the rear section 7b of the concentrate discharge pipe is all concentrate discharge pipes (including branch pipes) behind the concentrate discharge flow rate control device 71.
Unless otherwise stated, the term "water inlet line" may refer to all water passing lines in front of a water inlet of a filter cartridge or a water passing electric control unit, and not to only a section of line to which the water inlet of the filter cartridge or the water passing electric control unit is connected. The front filter container can adopt one or more. In addition, a composite preposed filter liner with a plurality of filter material layers can be adopted.
The preset time interval refers to that water changing operation is carried out at certain time intervals. The time period setting of the interval can be adjusted according to the actual situation. The fixed time length refers to the time corresponding to each water changing operation. The time setting corresponding to the water changing process can be adjusted according to the actual situation. In the process of regularly changing the water during the water storage period of the water purifier during the outage, the electric control device controls the water changing electric control valve 9 and related pipelines (including the arranged water passing electric control device) to conduct and run water passing.
The 'water passing electric control component' refers to all components which pass water and are controlled by an electric control component circuit, and can be a water passing control component or a water passing detection component, and the electric control device controls the water passing electric control component, and the electric control component is common knowledge technology in the field, and the details are not repeated in the scheme.
In this embodiment, the pure water pipeline 6 is finally discharged from the external discharge outlet 72 and the external discharge hose through the water change channel communicated by the water change electric control valve 9.
Example 2. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, and the electric control device controls the operation of a water passing electric control component comprising a related electric control valve and a booster pump of a filtering channel.
The method for changing the water periodically during the shutdown period of the water purifier also comprises the following steps: a water changing electric control valve is arranged between the pure water pipeline and the front 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 non-water-passing closed state; when the filtering channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the water delivery of the preposed filter liner and the booster pump according to the preset time interval and the timing length, and the water flows through the concentrated water discharge flow control device, the external water discharge port and the external discharge hose after being converged along two paths of water outlets of the pure water port and the concentrated water discharge port of the reverse osmosis membrane filter liner respectively to form a water changing channel: the pure water pipeline is converged with the front section of the concentrated water discharge pipeline connected with the concentrated water discharge port through the water changing electric control valve and then communicated with an external water discharge port and an external discharge hose behind the concentrated water discharge flow control device, so that the filtering channel including the pure water pipeline and the concentrated water discharge pipeline are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
The waterway of the embodiment 2 is mainly different from that of the attached figure 1 in that: the water change electric control valve 9 is arranged between the pure water pipeline 6 and the front section 7a of the concentrated water discharge pipeline (the water discharged by the water change electric control valve 9 and the concentrated water discharged from the concentrated water discharge port flow through the concentrated water discharge flow control device 71).
Example 3. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, and the electric control device controls the operation of a water passing electric control component comprising a related electric control valve and a booster pump of a filtering channel.
The method for changing the water periodically during the shutdown period of the water purifier also comprises the following steps: a concentrated water discharge flow control device (a combined conjoined device or a discrete device) with a bypass electric control valve is connected in series in a concentrated water discharge pipeline, wherein the bypass electric control valve is a water changing electric control valve; the control device of the discharge concentrated water flow controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water according to a preset fixed flow proportion, or controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water in a timing and long-term full-control manner; when the filtering channel is in a normal running state, a bypass electric control valve serving as a water changing electric control valve is in a non-water closing state (the mode that the bypass electric control valve controlled along with the pure water outlet valve is switched on and washes the water inlet side of the reverse osmosis membrane for a short time and then is closed is not counted), and the outlet water of the concentrated water outlet of the reverse osmosis membrane liner flows into the rear section of the controlled concentrated water outlet through the concentrated water outlet flow control device according to a preset fixed flow proportion; when the filtering channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the prepositive filter liner and the booster pump to operate and convey water according to the preset time interval and the timing length, the concentrate discharge water port of the reverse osmosis membrane filter liner flows through the communicated bypass electric control valve, the external water discharge port and the external water discharge hose to form a water change channel to discharge water, and then the filtering channel including the pure water pipeline and the concentrate discharge pipeline are kept to have water fluidity and have better water quality condition until the filtering channel is relieved from the shutdown period.
At the moment, the pure water pipeline connected with the pure water port of the reverse osmosis membrane filter container is closed, and the bypass electric control valve in the concentrated water discharge pipeline is conducted (without resistance), so that the water entering from the water inlet of the reverse osmosis membrane filter container flows out from the concentrated water discharge port.
This embodiment is a specific example of the present application. In the process of periodically changing water during the off-stream period of the water purifier, water entering the reverse osmosis membrane filter liner flows out from the concentrated water discharge port, flows out of the external water discharge port along the concentrated water discharge pipeline and is externally connected with a discharge hose. When the pure water outlet valve starts to conduct water in the normal operation process of a machine type provided with the pressure tank (the pure water pressure tank acts), the bypass electric control valve controlled along with the pure water outlet valve conducts water in a short time (about 18 seconds) to flush the water inlet side of the reverse osmosis membrane, so that impurities are prevented from being accumulated, and then the mode of water production is closed is different. At the moment, the bypass electric control valve is the water changing electric control valve.
The modes of embodiments 2, 3 are similar in nature.
In embodiments 1, 2, and 3, the above-mentioned pipe connections related to the water change electric control valve all belong to the water change channel of "when the filtration channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the operation of the pre-filter liner and the booster pump to feed water into the reverse osmosis membrane filter liner and discharge water from the concentrate discharge pipe and the external drain outlet at preset time intervals and timing lengths".
As an improvement of embodiments 1, 2, and 3, a reverse stop valve is further disposed in the pipeline where the water-changing electric control valve is located, so as to ensure that water in the pure water pipeline flows to an external discharge water outlet and an external discharge hose through the water-changing electric control valve.
Example 4. On the basis of the embodiments 1, 2 and 3, a water inlet electric control valve is arranged in a water passing pipeline which is connected with the front filter liner in series; the water inlet electric control valve is positioned at the front end of the tandem connection preposed filter container, or positioned in a pipeline between the two preposed filter containers, or positioned at the rear end of the tandem connection preposed filter container.
Example 5. On the basis of the embodiments 1, 2, 3 and 4, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is provided with a front concentrated water discharge storage tank double-branch pipeline: the bottom of the concentrated water discharging water storage tank connected with the rear section of the concentrated water discharging pipeline is provided with a discharge branch pipeline and a return water branch pipeline which are arranged in a rear position: the rear-mounted discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge pump, the rear-mounted water return branch pipeline is connected with a booster pump water inlet pipeline through a water return electric control valve which is connected in series, and the electric control device controls the water return electric control valve to be alternatively communicated with the water inlet electric control valve; when the filtering channel is in the shutdown period and the preposed filtering container is not in the water passing state, the electric control device controls the drainage pump to operate according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank out of the external drainage outlet through the conducted drainage branch pipeline, or until the concentrated water drainage level in the concentrated water drainage storage tank is lowered to the lower limit position, or until the filtering channel is released from the shutdown period state;
in the scheme, the drainage pump which is connected with the electric control valve in series and is controlled by the electric control valve to be switched on and off with water is also regarded as the drainage pump which is closed and is not used for water and is switched on to run with water, namely the drainage pump can also be the drainage pump which is connected with the electric control valve in series and is controlled by the electric control valve to be used for water.
Example 6. On the basis of the embodiments 1, 2, 3, 4 and 5, when the drainage level in the drainage water storage tank drops to the limit position and the drainage pump is closed, the drainage pump is still in the fixed-time control range of the electric control device, the electric control device controls the filtering channel, the water-changing electric control valve and the drainage pipeline to be conducted and run for water passing until the fixed-time control program of the electric control device is finished.
Example 7. A method for changing water periodically during the stop of water purifier, wherein the water pipeline is connected in series with a plurality of filter containers including a preposed filter container and a reverse osmosis membrane filter container and a filter channel formed by a booster pump and is provided with a water inlet electric control valve, the water inlet end of a water purification pipeline with a water purification outlet valve is arranged in a pipeline between the water outlet end of the preposed filter container and the water inlet end of the booster pump to form a preposed water purification pipeline, or the water inlet end of the water purification pipeline is arranged in a pipeline between the booster pump and the reverse osmosis membrane filter container to form a post-positioned water purification pipeline; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, and a discharge branch pipeline and a return water branch pipeline are respectively arranged at the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device: the discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge electric control valve; the backwater branch pipeline is connected with a water inlet pipeline of the booster pump through the inlet tank electric control valve, the concentrated water discharging water storage tank and the backwater electric control valve which are connected in series in sequence, and the electric control device controls the backwater electric control valve to be selectively communicated with the water inlet electric control valve.
The method for changing the water periodically during the shutdown period of the water purifier also comprises the following steps: a front water replacement electric control valve is arranged between the water purification pipeline and the discharge branch pipeline; when the filtering channel is in a normal operation state, the front water replacement electric control valve is in a non-water closing state; when the filtering channel is in the shutdown period of closing the water inlet electric control valve, the electric control device controls the drainage device to run according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank from the communicated water change electric control valve and the drainage branch pipeline to an external drainage outlet, or until the concentrated water level in the concentrated water drainage storage tank is lowered to a lower limit position, or until the filtering channel is released from the shutdown period state; the drainage device is additionally arranged on a drainage pump between the concentrated water drainage storage tank and the front purified water pipeline, or is connected with a booster pump at the water outlet end of the backwater electric control valve and the water inlet end of the rear purified water pipeline respectively.
For the mode of adopting the prepositive clear water pipeline, the front replacement water electric control valve can also be arranged between the water outlet pipeline of the last prepositive filter container and the discharge branch pipeline, and is equal to be arranged between the prepositive clear water pipeline and the discharge branch pipeline.
For the pure and clean dual water outlet type, water in the concentrated water discharging water storage tank can be pumped by the additional drainage pump or the booster pump and is sent out of the opened pure water outlet valve, and then the pure and clean dual water outlet type is fully utilized.
As an improvement, the water inlet ends of the drainage pump and the backwater electric control valve are communicated with a concentrated water drainage storage tank. And the water in the concentrated water draining storage tank is conveyed to an external water draining port and an external hose through a draining pump or a booster pump.
In the preferred mode, an upper control module and a combined machine base which is formed by matching the upper part and the lower part of a lower filter container cabin provided with a filter container cavity and fixing a filter container through an additionally arranged filter container fastening device are arranged, and a concentrated water discharge flow control device, a box inlet electric control valve, a front water replacement electric control valve, a discharge electric control valve and an external water discharge outlet are all arranged on the upper control module; the booster pump, the backwater electric control valve and the concentrated water discharging storage tank are all arranged in the lower filter liner bin. The lower filter liner bin is provided with a facility cavity for placing a water passing electric control component including a booster pump and a filter liner cavity for placing and fixing the filter liner, and a built-in space between the filter liner cavity and the built-in filter liner is used as a concentrated water discharging storage tank connected with a concentrated water discharging pipeline of the reverse osmosis membrane filter liner and connected with related pipelines.
Example 8. On the basis of the embodiment 7, when the drainage device is still in the control range of the electric control device for the fixed time length when the drainage water level in the drainage water storage tank drops to the limit position and the drainage device is closed, the electric control device controls the filtering channel and the water changing electric control valve to be conducted to run for water passing until the control program of the fixed time length of the electric control device is finished.
Example 9. The description is made with reference to fig. 2 and 3. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 7 and 8, the related electric control valve 2 is controlled to conduct or control the forward water passing of each tandem preposed filtering container 1a to form a preposed filtering channel, or the preposed backflushing channel for the reverse water passing of a single preposed filtering container 1a is controlled, and then a double-channel pipeline system which is controlled to select one of the preposed filtering channel or the preposed backflushing channel to switch conduction through the related electric control valve 2 is formed: the preposed water inlet pipeline 3 is sequentially connected with the water inlet and the water outlet of each preposed filtering container 1a in series to form a preposed filtering channel, and the water outlet end of the last preposed filtering container 1a is communicated with a preposed water outlet pipeline; simultaneously with the water inlet and outlet end interconnect of a plurality of electric control valves that leading filter bag number corresponds, wherein: the preposed water inlet pipeline is correspondingly connected with a group of water inlet ends serving as water inlet electric control valves, the water outlet end of one water inlet electric control valve 20 is connected with the head end of the preposed filtering channel, and the water outlet ends of the other water inlet electric control valves are respectively communicated with the water outlet ends of the corresponding preposed filtering containers 1 a; the preposed backflushing pipeline 5 is correspondingly connected with another group of water outlet electric control valves as the respective water outlet ends of the water outlet electric control valves, and the respective water inlet ends of the water outlet electric control valves of the group are respectively communicated with the water inlet ends of the corresponding preposed filter containers 1 a; the electric control device controls the conduction of a water inlet electric control valve 20 communicated with the head end of the preposed filtering channel and closes a group of water inlet electric control valves and a group of water outlet electric control valves to form the preposed filtering channel for positive water passing of each preposed filtering container 1a connected in series; the electric control device controls a water inlet electric control valve 21 and a water outlet electric control valve 25 positioned in front of the water inlet electric control valve 21 to be simultaneously communicated and closed with a water inlet end of the first preposed filter container 1a1, so as to form a preposed backflushing channel (the proposal is the prior art) for water inlet of the water inlet electric control valve 21 connected with a water outlet end of the related preposed filter container 1a1, water outlet end of the water outlet electric control valve 25 connected with a water inlet end of the preposed filter container 1a1, a preposed backflushing pipeline 5 and water outlet of an external water discharge port 72.
In this way, water is fed by the water inlet electric control valve 22 and flows through the water outlet electric control valve 26 connected with the water inlet end of the front filter container 1a2, the front backflushing pipeline 5 and the second front backflushing channel externally connected with the water outlet 72 to discharge water.
The water is fed by the water inlet electric control valve 23, and the water is discharged through the water outlet electric control valve 27 connected with the water inlet end of the preposed filter container 1a3, the preposed backflushing pipeline 5 and the third preposed backflushing channel externally connected with the water outlet 72.
The double-channel pipeline system is either a three-pipeline external connection mode formed by arranging a front water inlet pipeline, a front water outlet pipeline and a front backflushing pipeline, or a two-pipeline external connection mode formed by arranging a front water inlet pipeline and connecting the front backflushing pipeline with the water outlet end of a front electric control valve arranged at the tail end of a front filtering channel, wherein for the three-pipeline external connection mode, the front backflushing pipeline is connected with the rear section of a concentrated water discharge pipeline; for the two-pipeline external connection mode, the water inlet end of the water purification pipeline with the water purification outlet valve is connected in the pipeline between the preposed water outlet pipeline and the preposed backflushing pipeline as well as the water inlet end of the booster pump to form a preposed water purification pipeline, and a front replacement water electric control valve 91 is arranged between the preposed water purification pipeline and the rear section of the concentrated water discharging pipeline. For the water path with the discharge electric control valve 73, the water outlet end of the front water replacement electric control valve 91 can be connected with the water outlet end of the discharge electric control valve 73, and can also be connected with the water inlet end of the discharge electric control valve 73.
When the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in the period of shutdown, the electric control device controls the relevant electric control valve to conduct water according to the preset time interval and the timing length and to discharge the water by the external drainage outlet and the external drainage hose to form a water changing channel, wherein the part flowing through the two-channel pipeline system is as follows:
the water flowing through the water inlet electric control valve is discharged by the water outlet electric control valve which is connected with the water outlet end of the water inlet electric control valve and the preposed backflushing pipeline, namely, a first water passing mode, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter liner is positively passed through water, namely, a second water passing mode, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter liner is reversely passed through water, namely, a third water passing mode, or is discharged by the water changing electric control valve in the preposed water purifying pipeline after each preposed filter liner is positively passed through water, namely, a fourth water passing mode. Wherein:
the double-channel pipeline system adopts a three-pipeline external connection mode, namely a first water passing mode, a second water passing mode and a third water passing mode, and water is discharged through an external connection water discharge port 72 and an external connection discharge hose which are connected with the rear section 7b of the concentrated water discharge pipeline.
The dual-channel pipeline system adopts a two-pipeline external connection mode, namely a first water passing mode, a second water passing mode, a third water passing mode and a fourth water passing mode, and water is discharged through an external discharge water port 72 and an external discharge hose which are connected with a front replacement water electric control valve 91 in the front water purifying pipeline.
When the filtering channel is in the shutdown period and the booster pump is in the closed state, the related water inlet electric control valve and the corresponding water outlet electric control valve are sequentially conducted and communicated with the external discharge water outlet 72 and the external discharge hose to form a water changing channel:
in fig. 2, the water flowing through the water inlet electronic control valve 20 may flow out from the water inlet and outlet 25a and 25b of the water outlet electronic control valve 25 respectively connected with the water outlet end 20b of the water inlet electronic control valve and the pre-flush pipe 5 and flow out of the external water outlet. And so on.
Moreover, the water flowing through the water inlet and outlet ends 20a, 20b of the water inlet electric control valve 20 connected with the water inlet end of the first-stage pre-filter cartridge 1a1 can also be discharged from the water outlet end of the water inlet electric control valve 20 through the water inlet end 26a, 26b of the water outlet electric control valve 26 connected with the pre-backflushing pipeline 5 after the water flowing through the first-stage pre-filter cartridge 1a1 is positively discharged.
Similarly, the water flowing through the water inlet and outlet ends 21a and 21b of the water inlet electronic control valve 21 or the water inlet and outlet ends 22a and 22b of the water inlet electronic control valve 22 may correspondingly flow out through the water inlet and outlet ends 26a and 26b of the water outlet electronic control valve 26 or the water inlet and outlet ends 27a and 27b of the water outlet electronic control valve 27 and flow out of the external water outlet 72. The water flowing through the water inlet electric control valve 21 can also pass through the second-stage prepositive filter container 1a2 in the positive direction, then flows out of the water inlet end 27a and the water outlet end 27b of the water outlet electric control valve 27 and flows out of the external drainage outlet 72.
In addition, the water flowing through the water inlet and outlet ends 21a, 21b of the water inlet electric control valve 21 at the water outlet end of the first-stage pre-filter cartridge 1a1 can also be discharged from the water inlet electric control valve 21 through the water outlet end of the first-stage pre-filter cartridge 1a1 and then through the water outlet end connected to the water inlet and outlet ends 25a, 25b of the water outlet electric control valve 25 of the pre-backflushing pipeline 5 (from the water outlet end to the water inlet end, the same applies below). By analogy, the water flowing through the water inlet and outlet ends 22a and 22b of the water inlet electronic control valve 22 or the water inlet and outlet ends 23a and 23b of the water inlet electronic control valve 23 can flow through the second-stage pre-filter cartridge 1a2 or the third-stage pre-filter cartridge 1a3 in reverse direction, then flow out through the water inlet and outlet ends 26a and 26b of the water outlet electronic control valve 26 or the water inlet and outlet ends 27a and 27b of the water outlet electronic control valve 27 and flow out of the external water discharge outlet 72.
The dual-channel pipeline system adopts a three-pipeline external connection mode, and the preposed backflushing pipeline 5 can be independently connected with the rear section 7b of the concentrated water discharge pipeline and the external water discharge port 72.
On the basis of the three-pipeline external connection mode, a two-pipeline external connection mode is adopted in the dual-channel pipeline system, which is described by combining the attached drawing 3.
The rear end of the pre-filter channel is connected with the water inlet end of the booster pump 41 and the pre-backflushing pipeline 5 through another pre-electric control valve 28 (which can also be regarded as another water inlet electric control valve), so that a water passing mode is selected from the pre-water inlet pipeline 3 and the pre-backflushing pipeline 5.
In fig. 3, on the basis of fig. 2, the water inlet end 28a of the new preposed electronic control valve 28 is connected with the water outlet end of the third-stage preposed filter cartridge 1a3 and the water outlet end 23b of the water inlet electronic control valve. The water outlet end 28b of the preposed electric control valve 28 is taken as the rear end of the preposed filtering channel and is combined with the preposed backflushing pipeline 5 into a whole, and is connected with the booster pump 41 through the preposed water outlet pipeline 4 and is also connected with a preposed purified water pipeline 42 which is additionally provided with a purified water outlet valve 43. The electric control device controls the relevant electric control valve to select one to conduct the preposed filtering channel or the preposed backflushing pipeline, and then the water outlet valve 43 of the opened purified water is used for discharging the roughly filtered purified water to meet the requirements of washing or drinking purified water, or the backflushing washing sewage containing impurities is discharged to facilitate the condition of intercepting the impurities visually.
When the filtering channel is in the shutdown period and the purified water outlet valve 43 and the booster pump 41 are closed, the water inlet electric control valves and the corresponding water outlet electric control valves are sequentially conducted and communicated with the external water discharge outlet 72 and the external discharge hose through the front water replacement electric control valve 91 to form a water changing channel.
Fig. 4 is a schematic view of a waterway control structure, which is a schematic view of a combined waterway structure according to embodiments 1, 4, 5, 6, 7, 8 and 9. As a double water outlet type, a water outlet pipeline of a double-channel pipeline control system having a pre-filtration channel and a pre-backwashing channel is communicated with a pre-clean water pipeline 42 provided with a clean water outlet valve 43, and a reverse osmosis membrane liner and a subsequent control pipeline connected with a booster pump 41.
For the two-branch pipeline mode of the post-positioned concentrated water discharging storage tank, the rear section 7b of the concentrated water discharging pipeline is connected with the pre-positioned discharging branch pipeline 7c and is connected with an external discharging water outlet 72 and an external discharging hose through an additional discharging electric control valve 73, and is connected with the rear end of the water changing electric control valve 9 of the pure water pipeline 6, so that the front end (joint control of the two) of the discharging electric control valve 73 can be connected, and the rear end of the discharging electric control valve 73 can also be connected.
In consideration of preventing bacteria, viruses and insect pests entering the external hose from polluting the pure water pipeline as much as possible, the mode that the rear end of the water changing electric control valve 9 is connected with the front end of the discharge electric control valve 73 is preferred, namely, the pure water and the concentrated discharge water are converged and then pass through the discharge electric control valve 73, the external discharge water port 72 and the external hose together. At this time, the discharge electric control valve 73 and the water change electric control valve 9 are subjected to double isolation control for bacteria, viruses and insect pests which may enter from the external hose, and when the discharge electric control valve 73 is conducted, the effect of flushing the bacteria, viruses and insect pests in the pipeline is sufficiently achieved by virtue of the large discharge concentrate flow of the discharge branch pipeline 7 c.
On the basis, a reverse stop valve can be arranged on an external hose or a pipeline at the rear end of the discharge electric control valve 73 or a pipeline at the rear end of the water change electric control valve 9 to prevent bacteria, viruses and insect pests from entering.
A water return branch pipeline 7d connected with the rear section 7b of the concentrated water discharge pipeline is connected with a water inlet pipeline of the booster pump 41 sequentially through a tank inlet electric control valve 74, a concentrated water discharge storage tank 81 and a water return electric control valve 82 which are connected in series, wherein the tank inlet electric control valve 74 controls water inlet of the concentrated water discharge storage tank 81; the front end of a return water outlet pipeline 8 of the concentrated water discharge water storage tank 81 is connected with a return water electric control valve 82 and a drainage pump 83 in parallel, wherein the communicated return water electric control valve 82 is used for pumping water in the concentrated water discharge water storage tank by a booster pump to prepare water; the drain pump 83 that is operated in the conducting state is used to feed the water in the drain concentrate storage tank to a high place. The back end of the backwater outlet pipe 8 is connected with the water inlet end of the booster pump 41 and the clear water pipe 42, and a front replacement water electric control valve 91 is arranged between the front clear water pipe 42 and the front outlet pipe 4 and the external water discharge port 72.
When the filtration channel is in the shutdown period and the purified water outlet valve is closed, the electric control device controls the drainage pump communicated with the concentrated water discharging tank to discharge water at the closed state of the water inlet electric control valve, the purified water outlet valve 43 and the booster pump 41 according to the preset time interval and timing length, and discharges water through the communicated front replacement water electric control valve 91, the external drainage water outlet 72 and the external hose, as in the technical scheme of the embodiment 7 that the concentrated water discharging tank is connected with the front purified water pipeline (the front replacement water electric control valve 91 is connected with the rear end of the drainage electric control valve 73). In addition, the drainage pump connected with the concentrated water drainage storage tank can discharge water through the communicated front replacement water electric control valve 91 and the discharge electric control valve, and the external drainage outlet 72 and the external hose (the front replacement water electric control valve 91 is connected with the front end of the discharge electric control valve 73).
The water inlet end of the purified water pipeline 42 provided with the purified water outlet valve 43 in fig. 4 and the water inlet end of the front water replacement electronic control valve 91 are moved from the water inlet end of the booster pump 41 to the water outlet end of the booster pump 41, so as to obtain the corresponding technical scheme and related waterway structure of the concentrated water discharge storage tank in embodiment 7 connected with the post-positioned purified water pipeline, such as the waterway structure shown in fig. 5. In addition, the water outlet end of the front water-replacement electronic control valve 91 can be connected to the front end of the discharge electronic control valve 73 (two valves are communicated with the water-replacement channel) or connected to the rear end of the discharge electronic control valve 73 (the front water-replacement electronic control valve 91 is communicated with the water-replacement channel independently).
On the basis of the schematic view of the water path structure, the schemes of the embodiments 2 and 3 are respectively used to replace the scheme of the embodiment 1 (namely, the connection relation of the water-changing electric control valve is changed), namely, the water path structures corresponding to the embodiments 2 and 3 are obtained.
Example 10. On the basis of the embodiments 8 and 9, the water sequentially flowing through each water inlet electric control valve is firstly reversely passed through the corresponding preposed filter container and then is discharged through the water outlet end connected with the water outlet electric control valve of the preposed backflushing pipeline 5, namely, the water is sequentially reversely passed through each preposed filter container 1a and is discharged through the external discharge water outlet 72 and the external discharge hose, and then the water is converted into a water changing channel mode that all the preposed filter containers 1a in the preposed filter channels are positively passed through, the water is pressurized and conveyed to the reverse osmosis membrane filter containers 1b by the running booster pump 41, enters the reverse osmosis membrane filter containers 1b, and is discharged through the concentrated discharge pipeline 7 and the external discharge water outlet 72'.
Example 11. On the basis of examples 1, 2, 3, 4, 5, 6, 71, 7, 9, 10, the predetermined time intervals are set in steps of long and short periods of time during which the filtration channel is to be shut down.
In the above-described embodiments 1 to 12, the "regular water change" mode entering or exiting changeover switch is provided. When the change-over switch is switched to enter a 'regular water change' mode, the water purifier enters a water storage regular water change mode during the outage period: the electric control device controls to start the water changing channel to conduct and operate according to the preset time interval and the timing length, and stops conducting and operating the water changing channel when the conducting and operating time of the water changing channel reaches the set time, or stops conducting and operating the water changing channel after the operation of the water changing channel operation program is finished. On the basis, the electric control device controls the starting of the water changing channel to conduct operation at regular time again after a preset time interval. And so on until the final filtration channel is released from the off-period state.
Example 12. On the basis of the embodiments 1, 2, 3, 4, 5, 6, 71, 7, 9 and 10, the pure water pipeline is provided with a pure water storage device, and the water-changing electric control valve is arranged between the pure water storage device and the corresponding position of the concentrated water discharge pipeline.
Preferred modes: the water inlet of the water inlet pipeline of the water changing electric control valve is arranged at the bottom of the pure water storage device.
In the present case, except for the conventional concentrated water discharging water storage tank, when the concentrated water discharging water storage tank is adopted in the mode of arranging a water storage space structure for storing and discharging concentrated water between a wall of a filter liner and a built-in filter liner, the concentrated water discharging water storage tank can adopt a structural mode of arranging a water storage space structure for storing and discharging concentrated water between the wall of the filter liner and the built-in filter liner, and the outer side of a filter liner shell is contacted with the concentrated water to discharge the concentrated water, and can also adopt a structural mode of arranging a cylinder body serving as an inner wall around the filter liner, arranging a water storage space structure for storing and discharging concentrated water between the cylinder body and the wall of the filter liner, and the outer circumferential surface of the filter liner shell positioned on the inner side of the cylinder body is not contacted with the concentrated water to. In addition, each cylinder body arranged around each filter container can be changed into a combined cylinder body which is arranged around the periphery of each filter container and is used as an inner wall. A structural mode of a water storage space structure for storing and discharging concentrated water is arranged between the combined cylinder and the wall of the filter liner, and the outer circumferential surface of the filter liner shell positioned on the inner side of the combined cylinder is not contacted with the concentrated water.
The concentrated water discharging storage tank comprises the three water storage space structure modes, namely the concentrated water discharging storage tank adopting the three water storage space structure modes belongs to the concentrated water discharging storage tank with the filter chamber arranged: and a water storage space structure for storing and discharging concentrated water is arranged between the wall of the filter liner and the built-in filter liner.
On the basis of the above embodiments, if a pre-positioned filter container to be backflushed is added, a water inlet electric control valve and a water outlet electric control valve for backflushing are correspondingly added. On the contrary, if a backflushing prepositive filter container is reduced, a water inlet electric control valve and a water outlet electric control valve for backflushing are correspondingly reduced. In addition, if a certain pre-positioned filter container in the three pre-positioned filter containers capable of backflushing is changed into a pre-positioned filter container without backflushing function, only the water outlet electric control valve corresponding to the water inlet end and the water outlet end of the pre-positioned filter container and the water inlet electric control valve used for backflushing need to be removed.
The nanofiltration membrane filter liner belongs to a branch of the reverse osmosis membrane filter liner. In the scheme, the reverse osmosis membrane filter liner can be a reverse osmosis membrane filter liner or a nanofiltration membrane filter liner. In the above embodiments, the reverse osmosis membrane filter cartridge may be a single reverse osmosis membrane filter cartridge, or may be a combination of two reverse osmosis membrane filter cartridges. As the combination of two reverse osmosis membrane filter liners, the combination can be a parallel combination of two reverse osmosis membrane filter liners, and can also be a one-stage two-section type connection combination: the concentrated water discharging end of the previous reverse osmosis membrane filter liner is connected with the water inlet end of the next reverse osmosis membrane filter liner; the water outlet end of the previous reverse osmosis membrane filter container is connected with the water outlet end of the next reverse osmosis membrane filter container; the concentrated water discharging end of the back reverse osmosis membrane filter liner is connected with a concentrated water discharging pipeline provided with a concentrated water discharging flow control device.
Generally, the filtering channels connecting the filtering bladders and the water passing electric control component are respectively connected with the water inlet pipeline and the water outlet pipeline of the machine base to form the filtering channels. And selecting a related water passing electric control part to control related water passing pipelines in the filtering channel of the base. The water passing electric control part is at least one of a water passing electric control valve, a water pump, a concentrated discharge water flow control device, an ultraviolet sterilization device, a water pressure control switch, a flow sensor, a flow switch, a TDS probe and a water level monitoring device.
The water flow control components are conventional in the prior art, and it is not described that all of the water flow control components are necessarily adopted in the present application. As to which water passing control components need to be configured in a water purifier provided with a microfiltration membrane, an ultrafiltration membrane, a reverse osmosis membrane filter liner or a nanofiltration membrane filter liner, the water passing control components need to be configured according to specific needs of various machine types and connected with corresponding water passing pipelines, and the water passing control components belong to common knowledge in the field except for special description. The function and principle of the common water passing control part and the connected water passing pipeline are not repeated in the scheme.
Claims (10)
1. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, the electric control device controls a filtering channel to relate to a water passing electric control component comprising a related electric control valve and a booster pump to operate, and the reverse osmosis membrane filter liner is characterized in that a water changing electric control valve is arranged between the pure water pipeline and the rear section of the concentrated water discharge pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in a shutdown period and the pure water outlet valve is closed, the electric control device controls the preposed filter liner and the booster pump to operate and convey water according to a preset time interval and a timing length, and the water flows through the external discharge water outlet and the external discharge hose after being converged along two paths of outlet water of the pure water port and the concentrated water outlet of the reverse osmosis membrane filter liner respectively to form a water changing channel: the pure water pipeline is converged with the rear section of the concentrated water discharge pipeline behind the concentrated water discharge flow control device through the water changing electric control valve and then is communicated with an external water discharge outlet and an external discharge hose, so that the filtering channel comprising the pure water pipeline and the concentrated water discharge pipeline are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
2. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, and an electric control device controls a filtering channel to relate to a water passing electric control component comprising a related electric control valve and a booster pump to operate; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in a shutdown period and the pure water outlet valve is closed, the electric control device controls the preposed filter liner and the booster pump to operate and convey water according to a preset time interval and a timing length, and the water flows through the concentrated water discharge flow control device, the external water discharge port and the external discharge hose after being converged along two paths of outlet water of the pure water port and the concentrated water discharge port of the reverse osmosis membrane filter liner respectively to form a water changing channel: the pure water pipeline is converged with the front section of the concentrated water discharge pipeline connected with the concentrated water discharge port through the water changing electric control valve and then communicated with an external water discharge port and an external discharge hose behind the concentrated water discharge flow control device, so that the filtering channel including the pure water pipeline and the concentrated water discharge pipeline are kept to have water fluidity and good water quality condition until the filtering channel is released from the state during the shutdown period.
3. A method for changing water periodically during the off-stream period of a water purifier, wherein a water passing pipeline is connected in series with a plurality of filter liners including a preposed filter liner and a reverse osmosis membrane filter liner and a booster pump to form a filter channel; the reverse osmosis membrane filter liner is characterized in that a pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, the rear section of the concentrated water discharge pipeline behind the concentrated water discharge flow control device is connected with an external water discharge port and an external discharge hose, an electric control device controls a filtering channel to relate to a water passing electric control component comprising a relevant electric control valve and a booster pump to operate, and the reverse osmosis membrane filter liner is characterized in that the concentrated water discharge pipeline is connected in series with the concentrated water discharge flow control device with a bypass electric control valve which is a water changing electric; the control device of the discharge concentrated water flow controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water according to a preset fixed flow proportion, or controls the water in the front section of the discharge concentrated water to flow into the rear section of the discharge concentrated water in a timing and long-term full-control manner; when the filtering channel is in a normal running state, a bypass electric control valve serving as a water changing electric control valve is in a non-water-passing closed state, and the outlet water of the reverse osmosis membrane concentrated water discharging port flows into the rear section of the concentrated water discharging control device through the concentrated water discharging flow control device according to a preset fixed flow proportion; when the filtering channel is in the shutdown period and the pure water outlet valve is closed, the electric control device controls the prepositive filter liner and the booster pump to operate and convey water according to the preset time interval and the timing length, the concentrate discharge water port of the reverse osmosis membrane filter liner flows through the communicated bypass electric control valve, the external water discharge port and the external water discharge hose to form a water change channel to discharge water, and then the filtering channel including the pure water pipeline and the concentrate discharge pipeline are kept to have water fluidity and have better water quality condition until the filtering channel is relieved from the shutdown period.
4. A method for periodically changing the stored water during the shut-down period of a water purifier as claimed in claim 1, 2 or 3, characterized in that an electrically controlled valve for water inlet is arranged in a water passing pipeline connected in series with a pre-filter container; the water inlet electric control valve is positioned at the front end of the tandem connection preposed filter container, or positioned in a pipeline between the two preposed filter containers, or positioned at the rear end of the tandem connection preposed filter container.
5. A method for periodically changing water stored during stoppage of a water purifier as claimed in claim 1, 2 or 3, wherein a post-stage of the concentrate discharge line disposed after the concentrate discharge flow rate control means is provided with a pre-concentrate discharge tank two-branch line: the bottom of the concentrated water discharging water storage tank connected with the rear section of the concentrated water discharging pipeline is provided with a discharge branch pipeline and a return water branch pipeline which are arranged in a rear position: the rear-mounted discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge pump, the rear-mounted water return branch pipeline is connected with a booster pump water inlet pipeline through a water return electric control valve which is connected in series, and the electric control device controls the water return electric control valve to be alternatively communicated with the water inlet electric control valve; when the filtering channel is in the shutdown period and the preposed filtering container is not in the water passing state, the electric control device controls the drainage pump to operate according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank out of the external drainage outlet through the conducted drainage branch pipeline, or until the concentrated water drainage level in the concentrated water drainage storage tank is lowered to the lower limit position, or until the filtering channel is released from the shutdown period state.
6. The method for changing the stored water periodically during the shutdown period of the water purifier as claimed in claim 5, wherein when the level of the concentrated water in the concentrated water storage tank drops to the limit position and the drain pump is closed, the concentrated water is still in the control range of the timing length of the electric control device, the electric control device controls the filtering channel, the water changing electric control valve and the concentrated water discharging pipeline to be conducted to run for water passing until the timing length control program of the electric control device is finished.
7. A method for changing water periodically during the stop of water purifier, wherein the water pipeline is connected in series with a plurality of filter containers including a preposed filter container and a reverse osmosis membrane filter container and a filter channel formed by a booster pump and is provided with a water inlet electric control valve, the water inlet end of a water purification pipeline with a water purification outlet valve is arranged in a pipeline between the water outlet end of the preposed filter container and the water inlet end of the booster pump to form a preposed water purification pipeline, or the water inlet end of the water purification pipeline is arranged in a pipeline between the booster pump and the reverse osmosis membrane filter container to form a post-positioned water purification pipeline; the pure water port of the reverse osmosis membrane filter liner is connected with a pure water pipeline and a pure water outlet valve, a concentrated water discharge flow control device is arranged in a concentrated water discharge pipeline connected with a concentrated water discharge port, and a discharge branch pipeline and a return water branch pipeline are respectively arranged at the rear section of the concentrated water discharge pipeline arranged behind the concentrated water discharge flow control device: the discharge branch pipeline is connected with an external discharge water outlet and an external discharge hose through an additional discharge electric control valve; the backwater branch pipeline is connected with a water inlet pipeline of the booster pump through a tank inlet electric control valve, a concentrated water discharging water storage tank and a backwater electric control valve which are connected in series in sequence, and the electric control device controls the backwater electric control valve for discharging water from the concentrated water discharging water storage tank to be alternatively communicated with the water inlet electric control valve; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in the shutdown period of closing the water inlet electric control valve, the electric control device controls the drainage device to run according to the preset time interval and the timing length to drain the water in the concentrated water drainage storage tank from the communicated front replacement water electric control valve and the drainage branch pipeline to an external drainage outlet, or until the concentrated water level in the concentrated water drainage storage tank is lowered to a lower limit position, or until the filtering channel is released from the shutdown period state; the drainage device is additionally arranged on a drainage pump between the concentrated water drainage storage tank and the front purified water pipeline, or is connected with a booster pump at the water outlet end of the backwater electric control valve and the water inlet end of the rear purified water pipeline respectively.
8. The method for changing the stored water periodically during the shutdown period of the water purifier as claimed in claim 7, wherein when the level of the concentrated water in the concentrated water storage tank drops to the limit position and the drainage device is closed and still in the control range of the timing length of the electric control device, the electric control device controls the filtering channel and the water changing electric control valve to conduct and run the water until the timing length control program of the electric control device is finished.
9. A method for periodically changing the stored water during the shut-down period of a water purifier as claimed in claim 1, 2, 3, 6, 7 or 8, characterized in that the forward water passing through each of the serially connected pre-filter liners is conducted or controlled by controlling the related electric control valve to form a pre-filter channel or a pre-backflushing channel aiming at the reverse water passing through a single pre-filter liner, and then a two-channel pipeline system which is selected to be switched and conducted by controlling the pre-filter channel or the pre-backflushing channel through the related electric control valve is formed; the double-channel pipeline system comprises: the preposed water inlet pipeline is sequentially connected in series with the water inlet and the water outlet of each preposed filter container to form a preposed filter channel, and the water outlet end of the corresponding last preposed filter container is communicated with the preposed water outlet pipeline; the water inlet end and the water outlet end of the electric control valves corresponding to the number of the preposed filter liners are butted, wherein: the preposed water inlet pipeline is correspondingly connected with a group of water inlet ends serving as water inlet electric control valves, the water outlet end of one water inlet electric control valve is connected with the head end of the preposed filtering channel, and the water outlet ends of the other water inlet electric control valves are respectively communicated with the water outlet ends of the corresponding preposed filtering containers; the preposed backflushing pipeline is correspondingly connected with another group of water outlet electric control valves as respective water outlet ends of the water outlet electric control valves, and the respective water inlet ends of the water outlet electric control valves of the group are respectively communicated with the water inlet ends of the corresponding preposed filter liners; the electric control device controls the conduction of a water inlet electric control valve communicated with the head end of the preposed filtering channel and closes a group of water inlet electric control valves and a group of water outlet electric control valves to form the preposed filtering channel for positive water passing of each preposed filtering container connected in series; the electric control device controls a water inlet electric control valve and a water outlet electric control valve positioned in front of the water inlet electric control valve to be simultaneously conducted and closed, so that water is fed into the water inlet electric control valve connected with the water outlet end of the related preposed filter container, and then is discharged from a preposed backflushing channel through the water outlet end of the water outlet electric control valve connected with the water inlet end of the preposed filter container and a preposed backflushing pipeline; the double-channel pipeline system is either a three-pipeline external connection mode formed by arranging a front water inlet pipeline, a front water outlet pipeline and a front backflushing pipeline, or a two-pipeline external connection mode formed by arranging a front water inlet pipeline and connecting the front backflushing pipeline with the water outlet end of a front electric control valve arranged at the tail end of a front filtering channel, wherein for the three-pipeline external connection mode, the front backflushing pipeline is connected with the rear section of a concentrated water discharge pipeline; for the two-pipeline external connection mode, the water inlet end of a water purification pipeline with a water purification outlet valve is connected in a pipeline between a preposed water outlet pipeline and a preposed backflushing pipeline as well as the water inlet end of a booster pump to form a preposed water purification pipeline, and a water changing electric control valve is arranged between the water purification pipeline and the rear section of a concentrated water discharging pipeline; when the filtering channel is in a normal running state, the water-changing electric control valve is in a non-water-passing closed state; when the filtering channel is in the period of shutdown, the electric control device controls the relevant electric control valve to conduct water according to the preset time interval and the timing length and to discharge the water by the external drainage outlet and the external drainage hose to form a water changing channel, wherein the part flowing through the two-channel pipeline system is as follows: the water flowing through the water inlet electric control valve is discharged by a water outlet electric control valve which is connected with the water outlet end of the water inlet electric control valve and a preposed backflushing pipeline, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter container is positively passed through water, or is discharged by the electric control valve which is connected with the preposed backflushing pipeline through the water outlet end after the preposed filter container is reversely passed through water, or is discharged by the water changing electric control valve in the preposed water purifying pipeline after each preposed filter container is positively passed through water.
10. A method for periodically changing water stored during the shut down period of a water purifier as claimed in claim 1, 2, 3, 6, 7 or 8, wherein a 'periodically changing water' mode is set to enter or exit the change-over switch; when the change-over switch is switched to enter a 'regular water change' mode, the water purifier enters a regular water change mode for storing water during the shutdown period: the electric control device controls the starting of the water changing channel to conduct and run according to the preset time interval and the timing length.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2019108568345 | 2019-08-28 | ||
| CN201910856834 | 2019-08-28 |
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