CN205382021U - Festival water circulating system and domestic purifier of domestic purifier - Google Patents

Abstract

The water-saving circulation system of the household water purifier provided by the utility model is provided with an RO concentrated water return channel, and the RO concentrated water return channel is provided with a return waste water ratio valve and a first one-way valve; the concentrated water output port of the RO filter element and An RO flushing solenoid valve is installed on the water channel between the waste water interface, and an RO water inlet solenoid valve, RO inlet water quality detector and Booster pump, according to the monitoring output results of the RO inlet water quality detector, the controller controls the on-off of the return wastewater ratio valve, RO inlet solenoid valve and RO flushing solenoid valve, so as to control the return cycle of concentrated water to achieve water saving effect , or control the direct discharge of concentrated water, and then realize water saving while maintaining the flow of concentrated water, which greatly prolongs the service life of the RO filter element.

Description

Water-saving circulation system of household water purifier and household water purifier

technical field

The utility model relates to household water purification equipment, in particular to a water-saving circulation system of the household water purification machine.

Background technique

Household water purifiers are a solution for people to drink healthy water. At present, UF (UltraFiltration, ultrafiltration) filter elements and RO (Reverse Osmosis, reverse osmosis) filter elements are generally used in household water purifiers, and they are set on the waterway for filtration. While the water outlet produces purified water, a certain proportion of concentrated water will also be produced from the concentrated water outlet. The purified water produced by the product water outlet of the RO filter element is water that meets the water quality standard for direct drinking. The concentrated water produced by the concentrated water outlet can be used for domestic water such as washing vegetables, dishes and laundry, or directly discharged as waste water. The recovery rate of traditional water purifiers is about 30%, that is, to produce 3L of drinking water, about 7L of concentrated water is discharged, and a large amount of concentrated water is discharged as waste water, resulting in waste of water. Therefore, it is necessary to increase the output of water purifiers. The proportion of water to save water resources. Some existing water purification equipment increases the proportion of produced water by reducing the concentrated water ratio of the reverse osmosis membrane, which causes insufficient flow on the concentrated water side of the RO membrane in the RO filter element, and the garbage on the RO membrane cannot be flushed. Walking, it is easy to clog the membrane and gradually lose the filtering function. There are also some water purifiers that are connected to the waste water discharge electromagnetic valve at the waste water end, and the circuit controls the solenoid valve to open and discharge waste water intermittently. However, due to the differences in tap water quality in different regions and at different times, the existing water purification equipment is not suitable for water quality differences in various places. Therefore, there is an urgent need in the market for a water-saving circulation system that can control the discharge of concentrated water according to the results of water quality monitoring, and has a large flow rate of concentrated water so that the RO membrane is not prone to clogging.

Utility model content

Aiming at the above problems in the prior art, the utility model provides a water-saving circulation system for household water purifiers. The water-saving circulation system can control the discharge of concentrated water according to the results of water quality monitoring, and the flow of concentrated water is relatively large so that RO membranes are not prone to clogging.

In order to achieve the above object, the utility model adopts the following technical solutions:

The water-saving circulation system of a household water purifier includes a controller, a UF filter element, an RO filter element, a waterway channel, a tap water interface arranged at one end of the waterway channel, and a drinking water interface and a waste water interface at the other end of the waterway channel. The UF filter element and Each RO filter element includes a water inlet connected to a water channel, a concentrated water output port, and a product water output port. The communication between the product water output port of the UF filter element and the water inlet of the RO filter element also includes:

An RO water inlet solenoid valve, an RO inlet water quality detector and a booster pump arranged on the water channel between the water output port of the UF filter element and the water inlet of the RO filter element;

An RO flushing solenoid valve arranged on the water channel between the concentrated water outlet of the RO filter element and the waste water interface;

As well as the RO concentrated water return channel and the return wastewater ratio valve and the first one-way valve arranged on the RO concentrated water return channel, the first end of the RO concentrated water return channel is connected to the RO inlet water quality detector and the RO inlet The water channel between the water solenoid valves is connected, and the second end of the RO concentrated water return channel is connected with the water channel between the concentrated water output port of the RO filter element and the RO flushing solenoid valve.

In an embodiment of the present utility model, the water-saving circulation system further includes a pre-activated carbon filter element arranged on the water channel between the water output port of the UF filter element and the water inlet of the RO filter element.

In an embodiment of the present utility model, the water-saving circulation system further includes a second one-way valve, a RO produced water Water quality detector, high pressure switch and post filter device.

In an embodiment of the present invention, the post filter device includes one or more of a post activated carbon filter element, a post medical stone, and an ultraviolet lamp.

In an embodiment of the present utility model, the UF filter element includes multiple sets of UF membrane components and a filter housing for packaging the UF membrane components, the space on one side of the UF membrane components forms a clean water chamber, and the UF The space on the other side of the membrane module forms a wastewater chamber; multiple sets of UF membrane modules are connected in parallel through water channels.

In an embodiment of the present utility model, the water-saving circulation system further includes a low-pressure switch arranged on the water channel between the water inlet of the UF filter element and the tap water interface.

In an embodiment of the present utility model, the water-saving circulation system further includes a concentrated water return solenoid valve arranged on the RO concentrated water return channel.

In an embodiment of the present utility model, a diversion channel is provided on the water channel between the concentrated water outlet of the RO filter element and the wastewater interface, and a waste water ratio valve is provided on the diversion channel.

In an embodiment of the present utility model, the water-saving circulation system further includes a concentrated water discharge solenoid valve arranged in the diversion channel.

The utility model also provides a household water purifier with the above-mentioned water-saving circulation system, and the above-mentioned water-saving circulation system is arranged in the cabinet of the household water purifier.

Beneficial effects: the water-saving circulation system of the household water purifier provided by the utility model is based on the monitoring results of the water quality detector, and the controller selects and controls the corresponding electromagnetic valve to work, so that the concentrated water circulates back when the water quality is good, and when the water quality is poor Concentrated water is discharged directly, so as to realize the switch between water-saving cycle or flushing state, so as to achieve the effect of water saving, and make the RO filter element have a longer service life.

Description of drawings

Fig. 1 is the schematic diagram of the first embodiment of the water-saving circulation system of the household water purifier provided by the utility model;

Fig. 2 is the second embodiment schematic diagram of the water-saving circulation system of the household water purifier provided by the utility model;

Fig. 3 is the schematic diagram of the third embodiment of the water-saving circulation system of the household water purifier provided by the utility model;

Fig. 4 is a schematic diagram of the fourth embodiment of the water-saving circulation system of the household water purifier provided by the utility model.

detailed description

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is the schematic diagram of the first embodiment of the water-saving circulation system of the household water purifier provided by the utility model, the water-saving circulation system in the present embodiment includes a controller (not shown), UF filter element 1101, RO filter element 1104 , the water channel, and the tap water interface a arranged at one end of the water channel and the drinking water interface b and the waste water interface c at the other end of the water channel. Produced water outlet.

The water production outlet F1 of the UF filter element is connected to the water inlet E2 of the RO filter element, and the RO water inlet solenoid valve 1502, RO influent water quality detector 1601 and booster pump 1103.

An RO flushing solenoid valve 1503 is provided on the water channel between the concentrated water outlet G2 of the RO filter element 1104 and the waste water interface c.

The water channel is also provided with a RO concentrated water return channel. The first end of the RO concentrated water return channel is connected to the water channel between the RO inlet water quality detector 1601 and the RO inlet solenoid valve 1502. The second end of the RO concentrated water return channel The end is connected with the water channel between the concentrated water output port G2 of the RO filter element 1104 and the RO flushing solenoid valve 1503, and the RO concentrated water return channel is provided with a backflow waste water ratio valve 1701 and a first one-way valve 1301. Among them, the RO influent water quality detector 1601 can use TDS detector, conductivity detector, turbidity detector and other water quality detectors.

The water-saving circulation system of the household water purifier provided by the utility model is based on the monitoring results of the water quality detector, and the controller selects and controls the corresponding electromagnetic valve to work, so that the concentrated water circulates back when the water quality is good, and the concentrated water flows directly when the water quality is poor. Discharge, so as to realize the switching between water-saving cycle or flushing state, so as to achieve the effect of water saving, and make the RO filter element have a longer service life.

It should be noted that the RO filter element of the present utility model can also be replaced by a nanofiltration filter element. The UF filter element can be replaced by a ceramic filter element or a stainless steel filter element.

The water-saving circulation system of this embodiment also includes a pre-activated carbon filter element 1102 arranged on the water channel between the water output port F1 of the UF filter element 1101 and the water inlet E2 of the RO filter element 1104, and the inlet filter element 1102 arranged on the UF filter element 1101. A low-pressure switch 1201 on the water channel between the water outlet E1 and the tap water interface a.

The water-saving circulation system of this embodiment also includes a second one-way valve 1302, a RO produced water quality detector 1602, High pressure switch 1205 and post filter device 1105. Wherein the post-filter device 1105 includes one or more of a post-activated carbon filter element, a post-post medical stone, and an ultraviolet lamp.

In the water-saving circulation system of this embodiment, the UF filter core 1101 includes multiple sets of UF membrane modules packaged in the filter core, and the space on one side of each set of UF membrane components forms a water purification chamber, and the space on the other side forms a waste water chamber; multiple sets of UF membrane components The membrane modules are connected in parallel through water channels. Of course, in other embodiments, the UF filter element may also include multiple UF filter elements connected in parallel, and each UF filter element is provided with a set of UF membrane modules. The UF filter element 1101 in this embodiment can backwash another UF membrane module with clean water generated by one or more UF membrane modules. Of course, it is also possible to positively flush the UF membrane itself while producing water.

The concentrated water output port G1 of the UF filter element is connected to the waste water interface c, and the concentrated water output port G1 can be connected to the concentrated water output port G2 of the RO and then connected to the waste water interface c.

Fig. 2 is the schematic diagram of the second embodiment of the water-saving circulation system of the household water purifier provided by the utility model, the water-saving circulation system in the present embodiment increases the return flow of concentrated water in RO on the basis of the first embodiment The concentrated water return solenoid valve on the channel is used to conveniently control the on-off of the concentrated water return channel.

Fig. 3 is the schematic diagram of the third embodiment of the water-saving circulation system of the household water purifier provided by the utility model, the water-saving circulation system in the present embodiment has increased the diversion channel on the basis of the second embodiment, and the diversion channel is set On the water channel between the concentrated water output port G2 of the RO filter element and the waste water interface c, a discharge waste water ratio valve 1702 is set on the diversion channel for controlling the proportion of the concentrated water discharged.

Fig. 4 is a schematic diagram of the fourth embodiment of the water-saving circulation system of the household water purifier provided by the utility model. The water discharge solenoid valve 1504 is used to conveniently control the on-off of the shunt channel. In the above first to fourth embodiments, a water storage bucket may also be provided on the water channel between the high pressure switch and the post filter device.

To sum up, the water-saving circulation system of the present utility model is provided with an RO concentrated water return channel, and the RO concentrated water return channel is provided with a return wastewater ratio valve 1701 and a first one-way valve 1301; the concentrated water output port G2 of the RO filter element 1104 An RO flushing solenoid valve 1503 is provided on the water channel between the waste water interface c, and an RO water inlet solenoid valve 1502 is sequentially provided on the water channel between the water production outlet F1 of the UF filter element 1101 and the water inlet E2 of the RO filter element 1104 , RO influent water quality detector 1601 and booster pump 1103, according to the monitoring output result of RO influent water quality detector 1601, control concentrated water backflow cycle to achieve water saving effect, or control concentrated water to discharge directly. Realized water saving and flushing of the RO filter element, and greatly extended the service life of the RO filter element.

There is a low-pressure switch on the water inlet pipe, through which the booster pump can be protected. When the low-pressure switch detects that the water inlet pressure at the water inlet is too low, the booster pump will not start, which avoids the booster pump from emptying. Damage to the booster pump and the risk of overheating during evacuation.

When the high pressure switch 1205 detects that the pressure of the water storage tank is too high, the booster pump 1103 and the RO water inlet solenoid valve 1502 are closed, so that the RO filter element or nanofiltration filter element stops water production; when the high pressure switch 1205 detects that the pressure of the water storage tank is too low When the water level in the bucket is too low, the booster pump 1103 and the RO water inlet solenoid valve 1502 are turned on, so that the RO filter element or the nanofiltration filter element of the water purifier starts to produce water, which can effectively prevent the water purifier from 24 hours. It can also ensure the normal water consumption of users. Also can not adopt water storage barrel, directly be equipped with high pressure switch 1205 on pipeline, open water valve like this, can drink water, close valve, then water pressure increases, and high pressure switch action starts shutting down and flushing, then standby, waits to open next time. Of course, according to the water quality, when the water quality is good, there is no need to stop the machine for flushing.

The utility model also provides a household water purifier with the above-mentioned water-saving circulation system, and the above-mentioned water-saving circulation system is arranged in the cabinet of the household water purifier. This household water purifier can realize the self-flushing of the filter element. According to the monitoring results of the water quality detector, the controller selects and controls the corresponding solenoid valve to work, so that the concentrated water is circulated back when the water quality is good, and the concentrated water is discharged directly when the water quality is poor. In this way, water-saving circulation or switching between flushing states can be achieved to achieve water-saving effects, and the filter element has a longer service life, reducing the maintenance times of the household water purifier.

According to the disclosure and teaching of the above specification, those skilled in the art to which the utility model belongs can also make changes and modifications to the above embodiment. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims (10)

1. the water-saving circulating system of household water-purifying machine, including controller, UF filter element, RO filter element, waterway channel and the tap water interface and the drinking water interface of the waterway channel other end, the waste water interface that are arranged at waterway channel one end, described UF filter element all includes with RO filter element connecting the water inlet of waterway channel, dense water output and producing water output, the water output that produces of described UF filter element connects with the water inlet of RO filter element, it is characterized in that, also include:

It is arranged at the RO entering water electromagnetic valve on the waterway channel produced between water output and the water inlet of RO filter element of described UF filter element, RO influent quality detector and booster pump；

It is arranged at the RO scouring electromagnetic valve on the waterway channel between dense water output and the waste water interface of described RO filter element；

And RO concentrate recirculation passage and the backflow waste water ratio valve that is arranged on RO concentrate recirculation passage and the first check valve, waterway channel between first end of described RO concentrate recirculation passage with described RO influent quality detector and RO entering water electromagnetic valve connects, and the waterway channel between the second end and dense water output and the RO scouring electromagnetic valve of described RO filter element of described RO concentrate recirculation passage connects.

2. the water-saving circulating system of household water-purifying machine according to claim 1, it is characterised in that: also include the preposition activated charcoal filter element being arranged on the waterway channel produced between water output and the water inlet of RO filter element of described UF filter element.

3. the water-saving circulating system of household water-purifying machine according to claim 2, it is characterised in that: also include the second check valve, RO product water water quality testing meter, high-voltage switch gear and the rearmounted defecator that are set in turn on the waterway channel produced between water output and drinking water interface of described RO filter element.

4. the water-saving circulating system of household water-purifying machine according to claim 3, it is characterised in that: described rearmounted defecator includes one or more in post active carbon filter element, rearmounted Maifanitum, Burdick lamp.

5. the water-saving circulating system of household water-purifying machine according to claim 1, it is characterized in that: described UF filter element includes many group UF membrane modules and for encapsulating the filter housing of described UF membrane module, the space, side of described UF membrane module forms water purifying chamber, and the opposite side space of described UF membrane module forms waste water room；Many group UF membrane modules are in parallel by waterway channel.

6. the water-saving circulating system of household water-purifying machine according to claim 1, it is characterised in that: the low tension switch on waterway channel also including being arranged between water inlet and the tap water interface of described UF filter element.

7. the water-saving circulating system of household water-purifying machine according to claim 1, it is characterised in that: also include the concentrate recirculation electromagnetic valve being arranged on described RO concentrate recirculation passage.

8. the water-saving circulating system of household water-purifying machine according to claim 1, it is characterised in that: the waterway channel between dense water output and the waste water interface of described RO filter element is provided with split channel, described split channel is provided with waste discharge and compares valve.

9. the water-saving circulating system of household water-purifying machine according to claim 8, it is characterised in that: also include the concentrated water discharge electromagnetic valve being arranged at described split channel.

10. household water-purifying machine, including cabinet, it is characterised in that: it is provided with the water-saving circulating system as described in any one of claim 1～9 in described cabinet.