CN220370615U - Water purifying equipment - Google Patents

Abstract

The utility model discloses water purifying equipment, which comprises a water inlet main path, a water pump, a first filter element, a drainage pipeline and a cleaning component, wherein the water inlet main path is provided with a main water inlet and a main water outlet which are communicated with each other, and the main water inlet is communicated with a water source; the water pump is arranged on the water inlet main path; the first filter element is arranged in the water inlet main path and is provided with a first water outlet and a second water outlet, and the first water outlet is communicated with the main water outlet; the drainage pipeline is communicated with the second water outlet; the cleaning assembly comprises a first branch, a first cleaning module and a first control valve, wherein the first cleaning module and the first control valve are arranged on the first branch, the first cleaning module is used for storing cleaning agents, the first control valve is electrically connected with the water pump, and the first branch is communicated with the water inlet of the first filter element. The technical scheme of the utility model can improve the convenience of cleaning the filter element of the water purifier.

Description

Water purifying equipment

Technical Field

The utility model relates to the technical field of water purifying equipment, in particular to water purifying equipment.

Background

In the use, reverse osmosis membrane of reverse osmosis water purifier can produce certain waste water, along with the growth of live time, the pollution that reverse osmosis membrane waste water end received can progressively accumulate for reverse osmosis membrane's performance weakens, leads to filter core flux decline, desalination rate not up to standard scheduling problem, influences purifying effect, and can cause the complete inefficacy of membrane element after the pollution reaches certain degree. At this time, the filtering capability of the reverse osmosis membrane is not weakened, and the reverse osmosis membrane can be recovered by cleaning the membrane element, so that the service life of the reverse osmosis membrane is prolonged, and the core replacement frequency and the use cost are reduced.

In the related art, a water purifier is used for cleaning substances such as dirt and colloid on the surface of a reverse osmosis membrane, a cleaning agent accommodating tank and corresponding external pipelines are generally required to be arranged, and cleaning solution is also required to be arranged and poured into the cleaning agent accommodating tank to form an external cleaning circulation system of the water purifier, so that a reverse osmosis membrane filter element is cleaned. The mode is complex to operate, the proportion of the prepared cleaning solution is easy to make mistakes, more accessories and cleaning space are needed, and the filter element is time-consuming and labor-consuming to assemble and disassemble.

Disclosure of Invention

The utility model mainly aims to provide water purifying equipment, which aims to improve the convenience of cleaning a filter element of a water purifier.

In order to achieve the above object, the present utility model provides a water purifying apparatus comprising:

the water inlet main way is provided with a main water inlet and a main water outlet which are communicated, and the main water inlet is communicated with a water source;

the water pump is arranged on the water inlet main path;

the first filter element is arranged in the water inlet main path and is provided with a first water outlet and a second water outlet, and the first water outlet is communicated with the main water outlet;

a drainage pipeline communicated with the second water outlet; and

the cleaning assembly comprises a first branch, a first cleaning module and a first control valve, wherein the first cleaning module and the first control valve are arranged on the first branch, the first cleaning module is used for storing cleaning agents, the first control valve is electrically connected with the water pump, and the first branch is communicated with the water inlet of the first filter element.

Optionally, the water purification device further comprises a backflow component, the backflow component comprises a backflow branch and a backflow control valve arranged on the backflow branch, a first end of the backflow branch is communicated with the first water outlet, and a second end of the backflow branch is communicated with the water inlet of the first filter element.

Optionally, the first end of the first branch is communicated with the first end of the backflow branch, and the second end is communicated with the second end of the backflow branch.

Optionally, a first end of the first branch is communicated with the main water inlet, and a second end of the first branch is communicated with a second end of the backflow branch.

Optionally, the water purifying device further comprises a second filter element arranged on the water inlet main path, the second filter element is arranged on the upstream of the first filter element, the first end of the first branch path is communicated with the water inlet of the second filter element, and the second end of the first branch path is communicated with the water outlet of the second filter element.

Optionally, the water purifying device further comprises a main solenoid valve arranged on the water inlet main path and electrically connected with the first control valve, and the main solenoid valve is arranged at the downstream of the first end of the first branch path and at the upstream of the second filter element.

Optionally, the cleaning assembly further comprises a second branch, a second cleaning module and a second control valve, wherein the second cleaning module is arranged on the second branch, the second cleaning module is used for storing cleaning agents, the second control valve is electrically connected with the first control valve, and the second branch is communicated with the water inlet of the first filter element.

Optionally, the first end of the second branch is communicated with the first end of the return branch, and the second end is communicated with the second end of the return branch.

Optionally, the first end of the second branch is communicated with the first end of the return branch, and the second end is communicated with the second end of the return branch.

Optionally, the water pump is communicated with the water inlet of the first filter element and is arranged at the downstream of the second end of the backflow branch.

Optionally, the water purifying device further comprises a third filter element arranged in the water inlet main path, and the third filter element is arranged at the downstream of the first end of the backflow branch path.

Optionally, the backflow assembly further includes a backflow check valve disposed in the backflow branch, the backflow check valve being capable of restricting water flow from the second end of the backflow branch to the first end of the backflow branch.

Optionally, the first end of the first branch is communicated with the first water outlet, and the second end of the first branch is communicated with the water inlet of the first filter element.

Optionally, the first end of the first branch is communicated with the main water inlet, and the second end is communicated with the water inlet of the first filter element.

Optionally, the cleaning assembly further includes a first one-way valve disposed in the first branch, the first one-way valve being capable of restricting water flow from the second end of the first branch to the first end of the first branch.

Optionally, the first filter element comprises a reverse osmosis membrane and/or a nanofiltration membrane.

Optionally, the water purifying apparatus further comprises a flow meter electrically connected to the first control valve, the flow meter being configured to detect a flow rate of water flowing out of the second water outlet.

Optionally, the water purifying apparatus further comprises a water quality sensor electrically connected to the first control valve, the water quality sensor being used to detect the quality of water flowing into the main water inlet.

According to the technical scheme, the cleaning component is additionally arranged on the water purifying equipment, and whether the cleaning agent is introduced into the water inlet main path and the first filter element is controlled by opening and closing the first control valve, namely, the water purifying equipment can be flexibly controlled to freely switch between a daily water making mode and a filter element cleaning mode, so that the cleaning operation of the first filter element can be conveniently completed on the premise of not affecting the daily water making of the water purifying equipment. Compared with the prior art, the technical scheme of the utility model has the advantages that the first filter element is not required to be disassembled, the cleaning solution is not required to be prepared, the cleaning of the first filter element can be completed without excessive disassembly and assembly pipelines and external pipelines, the operation is convenient and simple, the filter element cleaning effect is good, the use experience of a product is improved, the core replacement frequency and the use cost can be reduced, and the service life of the water purifier is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a first embodiment of a water purification apparatus according to the present utility model;

FIG. 2 is a schematic structural diagram of a second embodiment of the water purifying apparatus of the present utility model;

FIG. 3 is a schematic structural diagram of a third embodiment of the water purifying apparatus of the present utility model;

FIG. 4 is a schematic structural diagram of a fourth embodiment of the water purifying apparatus of the present utility model;

FIG. 5 is a schematic structural diagram of a fifth embodiment of the water purifying apparatus of the present utility model;

FIG. 6 is a schematic structural diagram of a sixth embodiment of the water purifying apparatus of the present utility model;

FIG. 7 is a schematic structural diagram of a seventh embodiment of a water purifying apparatus according to the present utility model;

FIG. 8 is a schematic structural diagram of an eighth embodiment of the water purifying apparatus of the present utility model;

fig. 9 is a schematic structural diagram of a ninth embodiment of the water purifying apparatus of the present utility model;

fig. 10 is a schematic structural diagram of a tenth embodiment of the water purifying apparatus of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Main water inlet path	42	Waste water valve
11	Main water inlet	51	First branch circuit
				12	Main water outlet	52	First cleaning module
21	Water pump	53	First control valve
				22	Second filter element	54	First one-way valve
23	Third filter element	55	A second branch
				24	Main control valve	56	Second cleaning module
25	Filter device	57	Second control valve
				26	Water tap	58	Second one-way valve
30	First filter element	61	Reflux branch
				31	First water outlet	62	Reflux control valve
32	Second water outlet	63	Backflow one-way valve
				41	Drainage pipeline

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the use, reverse osmosis membrane of reverse osmosis water purifier can produce certain waste water, along with the growth of live time, the pollution that reverse osmosis membrane waste water end received can progressively accumulate for reverse osmosis membrane's performance weakens, leads to filter core flux decline, desalination rate not up to standard scheduling problem, influences purifying effect, and can cause the complete inefficacy of membrane element after the pollution reaches certain degree. The pollution on the surface of the reverse osmosis membrane is a reversible process, and at the moment, the self filtering capacity of the reverse osmosis membrane is not weakened, and the reverse osmosis membrane can be recovered in performance by cleaning the membrane element, so that the service life of the reverse osmosis membrane is prolonged, and the core changing frequency and the use cost are reduced.

In the related art, the water purifier is used for cleaning substances such as dirt and colloid on the surface of the reverse osmosis membrane, and usually, a filter element is required to be disassembled, a cleaning agent accommodating tank and a corresponding external pipeline are required to be arranged, and cleaning solution is required to be configured and poured into the cleaning agent accommodating tank so as to form an external cleaning circulation system of the water purifier, so that the reverse osmosis membrane filter element is cleaned. The mode is complex in operation, the proportion of the prepared cleaning solution is easy to make mistakes, the external cleaning circulation system needs more accessories and cleaning space, and in addition, the filter element is time-consuming and labor-consuming to disassemble and assemble.

In view of this, the present utility model proposes a water purifying apparatus, please refer to fig. 1 to 10, in some embodiments of the present utility model, the water purifying apparatus includes:

the water inlet main channel 10 is provided with a main water inlet 11 and a main water outlet 12 which are communicated, and the main water inlet 11 is communicated with a water source;

a water pump 21 provided in the water inlet main passage 10;

the first filter element 30 is arranged in the water inlet main channel 10, the first filter element 30 is provided with a first water outlet 31 and a second water outlet 32, and the first water outlet 31 is communicated with the main water outlet 12;

a drain line 41 communicating with the second water outlet 32; and

the cleaning assembly comprises a first branch 51, a first cleaning module 52 and a first control valve 53, wherein the first cleaning module 52 and the first control valve 53 are arranged on the first branch 51, the first cleaning module 52 is used for storing cleaning agent, the first control valve 53 is electrically connected with the water pump 21, and the first branch 51 is communicated with the water inlet of the first filter element 30.

Specifically, the water purifying apparatus is operated in a daily water making mode by the water pump 21 to continuously pump a water source from the water source to the first filter cartridge 30 and to generate pure water and wastewater at the water outlet side of the first filter cartridge 30, respectively, wherein the pure water flows to the main water outlet 12 through the first water outlet 31 and is externally output, and the wastewater flows into the drain line 41 through the second water outlet 32 and is discharged. The first control valve 53 is closed at this time to prevent the detergent in the first cleaning module 52 from entering the water intake main 10.

When the water purifying device enters the filter element cleaning mode, the water pump 21 works, the first control valve 53 is opened, and the cleaning agent in the first cleaning module 52 enters the water inlet main path 10 in a cleaning ion state and can enter the first filter element 30 along with water flow, and the cleaning agent can react with dirt on the first filter element 30 when flowing through the first filter element 30, so that dirt is removed. At this time, the first water outlet 31 of the first filter element 30 may or may not generate pure water, and for the former, the backflow branch 61 needs to be provided to redirect the pure water flowing out of the first water outlet 31 to the water inlet of the first filter element 30, as in the embodiments shown in fig. 2 and 4, however, the backflow effect of the first branch 51 may also be directly achieved in the embodiments shown in fig. 5 and 7; in the latter case, the water flowing into the first cartridge 30 flows out through the second water outlet 32 and flows into the drain line 41 to be discharged completely, as in the embodiments shown in fig. 1 and 3.

In the technical scheme of the utility model, the cleaning component is additionally arranged on the water purifying equipment, and whether the cleaning agent is introduced into the water inlet main circuit 10 and the first filter element 30 is controlled by opening and closing the first control valve 53, namely, the water purifying equipment can be flexibly controlled to freely switch between a daily water making mode and a filter element cleaning mode, so that the cleaning operation of the first filter element 30 can be conveniently completed on the premise of not influencing the daily water making of the water purifying equipment. Compared with the prior art, the technical scheme of the utility model has the advantages that the first filter element 30 is not required to be disassembled, the cleaning solution is not required to be prepared, excessive disassembly and assembly pipelines and external pipelines are not required, the cleaning of the first filter element 30 can be completed, the operation is convenient and simple, the filter element cleaning effect is good, the use experience of a product is improved, the core replacement frequency and the use cost can be reduced, and the service life of the water purifier is prolonged.

Specifically, the first filter element 30 includes a reverse osmosis membrane and/or a nanofiltration membrane, for example, the first filter element 30 is configured as a reverse osmosis membrane filter element, so that pure water flowing out from the first water outlet 31 can reach a direct drinking standard, thereby improving the use experience of the water purifying device. Of course, in other embodiments, the first filter element 30 may be configured as a nanofiltration membrane filter element, or a composite filter element having both a reverse osmosis membrane and a nanofiltration membrane.

It can be understood that the opening and closing instructions of the filter element cleaning mode can be generated automatically by the water purifying equipment according to preset conditions or manually by a user, and for the latter, the user can directly operate a control key or a touch screen on the water purifying equipment or remotely operate the water purifying equipment through a mobile intelligent terminal such as a mobile phone, a tablet personal computer and the like.

There are various ways in which the water purification apparatus automatically generates the opening and closing instructions of the cartridge washing mode according to the preset conditions, for example, in some embodiments, the water purification apparatus further includes a flow meter (not shown in the drawings) electrically connected to the first control valve 53, the flow meter being configured to detect the flow rate of water flowing out of the second water outlet 32. That is, the flow meter is provided on the pure water path, specifically, the flow meter may be provided at the first water outlet 31, the main water outlet 12, or between the two, and may be provided at the tap 26 of the main water outlet 12. Thus, the flowmeter can detect the flow rate of the purified water on the purified water path, and when the accumulated flow rate of the purified water reaches a preset value, the water purifying device is automatically controlled to enter a filter element cleaning mode, for example, the preset value is configured to be 500L to 2000L, so that the cleaning convenience of the first filter element 30 and the intellectualization of the water purifying device are improved.

In other embodiments, the water purifying apparatus further includes a water quality sensor (not shown in the drawings) electrically connected to the first control valve 53, for detecting the quality of water flowing into the main water inlet 11. That is, the water quality sensor can detect the quality of raw water flowing into the main water inlet 11, and the system starts cleaning at regular time according to different quality of the raw water, for example, the cleaning frequency is increased in case of poor quality of raw water, and the cleaning frequency is decreased in case of good quality of raw water. The water quality sensor is particularly optionally configured as a TDS (Total dissolved solids ) sensor, although in other embodiments the water quality sensor may also be configured as a COD (Chemical Oxygen Demand ) sensor or a pH (hydrogen ion concentration, hydrogen ion concentration index) sensor, etc.

Of course, in other embodiments, the water purifying device may be configured with a water quality sensor for detecting the quality of fresh water and a flowmeter for detecting the flow rate of pure water, and the comprehensive judgment may be performed according to the data detected by the water quality sensor and the flowmeter, for example, the preset values of different flow rates of pure water may be set according to different water quality conditions, so that the water purifying device may be controlled to enter or exit the filter core control mode more flexibly and scientifically.

It will be appreciated that there are various ways of connecting the first branch 51 to the water inlet main 10, for example, referring to fig. 1, 3 and 6, in some embodiments, a first end of the first branch 51 is connected to the main water inlet 11, and a second end is connected to the water inlet of the first filter element 30. Referring to fig. 2, 4 and 7, in other embodiments, the first end of the first branch 51 may be connected to the first water outlet 31, and the second end may be connected to the water inlet of the first filter element 30.

Referring to fig. 1 to 10, in some embodiments, the cleaning assembly further includes a first check valve 54 disposed in the first branch 51, the first check valve 54 is capable of restricting water flowing from the second end of the first branch 51 to the first end of the first branch 51, and the first cleaning module 52 is in communication with the first check valve 54 and the first control valve 53. In this way, the water in the water inlet main path 10 flows into the first cleaning module 52 in the daily water making mode of the water purifying device can be avoided, so that the problem that the cleaning agent in the first cleaning module 52 is quickly dissolved due to long-time soaking in the water can be avoided, and the service life of the cleaning agent can be prolonged. Further alternatively, the first check valve 54 is provided downstream of the first cleaning module 52 and the first control valve 53 is provided upstream of the first cleaning module 52 in the flow direction of the first branch 51. Of course, in other embodiments, the first check valve 54 may be disposed upstream of the first cleaning module 52 and the first control valve 53 may be disposed downstream of the first cleaning module 52. In other embodiments, the first check valve 54 may not be provided.

Referring to fig. 1 to 10, in some embodiments, the water purifying apparatus further includes a waste water valve 42 provided in the drain line 41, and the waste water valve 42 is electrically connected to the water pump 21. Specifically, alternatively, the waste water valve 42 in this embodiment can realize the functions of full open and cut-off current limiting, that is, the normally open waste water valve 42, so that the waste water valve 42 can support the water making operation of the water purifying module under the condition of no power supply by default. Of course, in other embodiments, the waste valve 42 may be a normally closed waste valve 42, or the waste valve 42 may be omitted.

Without loss of generality, the reverse osmosis water purifier is started again after a period of shutdown, and the phenomenon of 'first cup water' exists, namely the TDS value of the first cup water received after the shutdown is higher, and the reverse osmosis water purifier is not suitable for direct drinking, so that a user is recommended to drain the first cup water.

Referring to fig. 6 to 10, in some embodiments, the water purifying apparatus further includes a backflow component, the backflow component includes a backflow branch 61 and a backflow control valve 62 disposed on the backflow branch 61, a first end of the backflow branch 61 is connected to the first water outlet 31, and a second end of the backflow branch 61 is connected to the water inlet of the first filter element 30. That is, the pure water flowing out of the first water outlet 31 can flow back to the water inlet of the first cartridge 30 through the return branch 61. Thus, by providing the return flow assembly, the water pump 21 is turned on at regular time according to a preset instruction or turned on according to a manual instruction of a user, and the return flow control valve 62 is opened to allow the water purification apparatus to enter a return flow flushing mode. At this time, the main water outlet 12 does not output water to the outside, and the water flowing into the first filter element 30 can flow and replace the water in the first water outlet 31 under the action of the water pump 21, so that the problem of poor water quality of the first cup of water can be solved. Of course, in other embodiments, no reflow assembly may be provided.

Further optionally, the backflow assembly further comprises a backflow check valve 63 disposed in the backflow branch 61, the backflow check valve 63 being capable of restricting water flow from the second end of the backflow branch 61 to the first end of the backflow branch 61. Thus, water can only flow from the first water outlet 31 into the return branch 61 and through the return branch 61 to the water inlet of the first cartridge 30. Specifically, the return check valve 63 is provided upstream of the return control valve 62. Of course, in other embodiments, the return check valve 63 may be disposed downstream of the return control valve 62, or the return check valve 63 may not be disposed.

It should be noted that, in the filter element cleaning mode, the backflow component can also participate in the cleaning operation, specifically, the water pump 21 pumps the raw water mixed with the cleaning agent and the pure water flowing out through the backflow branch 61 into the first filter element 30 together, when the cleaning agent cleans the first filter element 30, the first water outlet 31 of the first filter element 30 generates new pure water and the second water outlet 32 generates new waste water, the new pure water generated from the first water outlet 31 can return to the water inlet of the first filter element 30 through the backflow branch 61 and enter the first filter element 30 after being mixed with the raw water introduced subsequently, the first filter element 30 generates new pure water and new waste water, and so on. It can be appreciated that in the filter element cleaning mode, due to the participation of the backflow component, compared with the scheme that only the waste water is generated but the pure water is not generated by the first filter element 30, the water resource can be saved, and the effects of energy conservation and emission reduction can be achieved.

Of course, referring to fig. 2, 4 and 5, in the embodiment in which the first end of the first branch 51 is connected to the first water outlet 31 and the second end is connected to the water inlet of the first filter element 30, the first branch 51 also plays a role in backflow, that is, pure water of the first water outlet 31 can flow to the water inlet of the first filter element 30 through the first branch 51, without providing an additional backflow branch 61, and the effect of saving water resources in the filter element cleaning mode can be achieved.

Specifically, optionally, the duration of the filter element cleaning mode is in a range of 0.1min to 20min, and it can be understood that if the duration is too small, the cleaning effect cannot be ensured, and if the duration is too large, the waste of water resources is obviously caused. Further alternatively, the duration of the filter element cleaning mode may be determined based on data such as the integrated flow rate of the purified water and the quality of the raw water detected by the flow meter, the water quality sensor, and the like.

Referring to fig. 7, 9 and 10, in some embodiments, a first end of the first branch 51 communicates with a first end of the return branch 61, and a second end communicates with a second end of the return branch 61. That is, the first branch 51 and the return branch 61 are arranged in parallel, and the water flowing through the first branch 51 and used for melting the cleaning agent is pure water from the first water outlet 31.

Referring to fig. 6 and 8, in other embodiments, a first end of the first branch 51 is connected to the main water inlet 11, and a second end is connected to a second end of the return branch 61. That is, the first branch 51 and the return branch 61 are disposed in series, and the first branch 51 is upstream of the return branch 61, and the water flowing through the first branch 51 for melting the cleaning agent at this time is raw water from a water source.

Referring to fig. 1 to 10, in some embodiments, the water purifying apparatus further includes a second filter 22 disposed in the water inlet main circuit 10, the second filter 22 is disposed upstream of the first filter 30, a first end of the first branch 51 is connected to a water inlet of the second filter 22, and a second end is connected to a water outlet of the second filter 22. Specifically, the second filter 22 may be configured as any one of a PP filter, an activated carbon filter, and a composite filter. That is, the second filter element 22 serves as a pre-filter element of the water purifier, and can perform coarse filtration on raw water, thereby protecting the first filter element 30 to a certain extent and prolonging the service life of the first filter element 30. Of course, in other embodiments, the second filter element 22 may not be provided, and the water inlet of the first filter element 30 may be directly connected to the main water inlet 11.

Referring to fig. 6 and 8, in some embodiments, the water purifying apparatus further includes a main solenoid valve disposed in the water inlet main circuit 10 and electrically connected to the first control valve 53, and the main solenoid valve is disposed downstream of the first end of the first branch circuit 51 and upstream of the second filter element 22. In this way, in the cartridge washing mode, by closing the main path solenoid valve, the raw water flowing in from the main water inlet 11 can be entirely used for mixing the detergent, thereby improving the washing efficiency and effect. Of course, in other embodiments, the main solenoid valve may be disposed upstream of the second end of the first branch 51 and downstream of the second filter element 22. In other embodiments, a main solenoid valve may not be provided.

Referring to fig. 1 to 10, in some embodiments, the water purifying apparatus further includes a filter 25 disposed in the water inlet main path 10, and the filter 25 is disposed in the main water inlet 11. In this way, the raw water flowing from the main water inlet 11 can be filtered by the filter 25, so that the large-particle pollutants in the raw water can be filtered, and various components positioned at the downstream of the raw water can be protected to a certain extent, for example, the main solenoid valve can be prevented from being blocked by the large-particle pollutants in the raw water. Specifically alternatively, the filter 25 is configured as a ball valve with a stainless steel mesh. Of course, in other embodiments, the filter 25 may also be configured as filter cotton. In other embodiments, the filter 25 may not be provided.

Further alternatively, in the embodiment of the water purifying apparatus provided with the water quality sensor, the water quality sensor is communicated between the filter 25 and the second filter element 22, so that the filter 25 can perform rough filtration on the raw water flowing in from the main water inlet 11 to play a certain role in protecting the water quality sensor, and the data detection precision of the water quality sensor is not affected.

Referring to fig. 3 to 5 and 8 to 10, in some embodiments, the cleaning assembly further includes a second branch 55, a second cleaning module 56 disposed in the second branch 55, and a second control valve 57, wherein the second cleaning module 56 is used for storing cleaning agent, the second control valve 57 is electrically connected with the first control valve 53, and the second branch 55 is communicated with the water inlet of the first filter element 30. Thus, when the first cleaning module 52 and the second cleaning module 56 store the same type of cleaning agent, for example, acidic cleaning agents are stored, the efficiency of the cleaning agent being melted into water can be improved, thereby being beneficial to improving the cleaning rate and effect. When the first cleaning module 52 and the second cleaning module 56 store different types of cleaning agents, for example, one stores an acidic cleaning agent and the other stores an alkaline cleaning agent, the first filter element 30 can be subjected to acid cleaning first and then to alkaline cleaning, or to alkaline cleaning first and then to acid cleaning by controlling the first control valve 53 and the second control valve 57 to be opened sequentially.

Alternatively, the first cleaning module 52 stores alkaline cleaning agent, the second cleaning module 56 stores acidic cleaning agent, and alkaline cleaning is performed before acid cleaning, wherein, during the alkaline cleaning in the first step, the first control valve 53 is opened and the second control valve 57 is closed, so that water flows into the first cleaning module 52 to carry out alkaline ions, but does not flow into the second cleaning module 56, and after the alkaline ions enter the first filter element 30 under the action of the water pump 21, organic pollutants adhered to the membrane surface of the first filter element 30 can be washed away. In the embodiment provided with the return branch 61, the pure water output from the first water outlet 31 can also return to the pump through the return branch 61, and the waste water output from the second water outlet 32 is discharged through the drain line 41.

After the first step is continued for a period of time, the first control valve 53 is closed and the second control valve 57 is opened, so that water flows into the second cleaning module 56 to carry out acidic ions, but does not flow into the first cleaning module 52, and the acidic ions enter the first filter element 30 under the action of the water pump 21, so that not only can the scale adhered to the membrane surface of the first filter element 30 be washed, but also the residual alkaline ions of the alkaline cleaning in the previous step can be neutralized. In the embodiment provided with the return branch 61, the pure water output from the first water outlet 31 can also return to the pump through the return branch 61, and the waste water output from the second water outlet 32 is discharged through the drain line 41.

Specifically, alternatively, the duration of the first step ranges from 0.1min to 20min, and the duration of the second step ranges from 0.1min to 20min, which can be understood that if the duration is too small, the cleaning effect cannot be ensured, and if the duration is too large, the waste of water resources is obviously caused. Further alternatively, the duration of the first step and the second step may be determined based on data such as the flow meter, the integrated flow rate of the purified water detected by the water quality sensor, and the quality of the raw water.

Further optionally, after the second step, the filter element cleaning mode further has a third step, specifically, when the third step is performed, the first control valve 53 and the second control valve 57 are both closed, and the main control valve 24 is opened, so that the water flowing into the first filter element 30 does not carry any cleaning ions, and the residual cleaning ions in the first filter element 30 can be cleaned, thereby reducing the content of the cleaning ions that are output to the outside during the subsequent water production. It will be appreciated that in embodiments where the return branch 61 is provided, the return control valve 62 may alternatively be opened to allow the first cartridge 30 to produce both pure water and waste water; alternatively, the return flow control valve 62 may be closed and the waste water valve 42 may be energized fully open (i.e., fully open) to allow the first cartridge 30 to produce only waste water, at which time the water used for the third step flush becomes waste water and is drained by the drain line 41; of course, the return flow control valve 62 may be opened and then closed.

Specifically, optionally, the duration of the third step ranges from 0.1min to 20min, which can be understood that if the duration is too small, the flushing effect cannot be ensured, and if the duration is too large, the waste of water resources is obviously caused.

It will be appreciated that in embodiments in which only one cleaning branch (i.e., first branch 51) is provided, such as the embodiments shown in fig. 1, 2, 6 and 7, a flushing step may be provided after the step of introducing cleaning ions to clean the first filter element 30, i.e., water without cleaning ions is introduced to flush the first filter element 30 to remove the cleaning ions remaining in the previous step.

Of course, the water purifying device can further be provided with more cleaning branches and cleaning modules, for example, a third branch, a third cleaning module, a third control valve and the like, so that more combination and more flexible filter element cleaning modes are realized, and the water purifying device is not particularly limited.

Specifically, the specific forms of the cleaning agents stored on the first cleaning module 52 and the second cleaning module 56 are various, for example, the types of the cleaning agents can be acidic cleaning agents or alkaline cleaning agents, wherein the acidic cleaning agents can be citric acid, fruit acid, lactic acid and the like, and the alkaline cleaning agents can be sodium carbonate, calcium carbonate, ammonia water and the like; the form of the cleaning agent can be solid or liquid, wherein the solid cleaning agent can be granular solid or massive solid and the like. And secondly, the cleaning agent can be also configured into a slow-release cleaning agent for the water purifying equipment to automatically clean for a plurality of times.

In addition, the first cleaning module 52 and/or the second cleaning module 56 are configured as an external structure movably disposed on the housing of the water purifying apparatus, so that a user can manually add the cleaning agent, and the specific structure can refer to related structural schemes such as a washing machine, a dishwasher, etc. for adding the cleaning agent, which are not described herein in detail.

It will be appreciated that the second branch 55 may be arranged in various manners, for example, referring to fig. 4 and 9, in some embodiments, a first end of the second branch 55 is connected to a first end of the return branch 61, and a second end is connected to a second end of the return branch 61. Referring to fig. 3, 5, 8 and 10, in other embodiments, a first end of the first branch 51 is connected to the main water inlet 11, and a second end is connected to a second end of the return branch 61.

Referring to fig. 3 to 5 and 8 to 10, in some embodiments, the cleaning assembly further includes a second check valve 58 disposed in the second branch 55, the second check valve 58 being capable of restricting water flowing from the second end of the second branch 55 to the first end of the second branch 55, and the second cleaning module 56 being in communication with the second check valve 58 and the second control valve 57. In this way, the water in the water inlet main path 10 flows into the second cleaning module 56 in the daily water making mode of the water purifying device can be avoided, so that the problem that the cleaning agent in the second cleaning module 56 is quickly dissolved due to long-time soaking in the water can be avoided, and the service life of the cleaning agent can be prolonged. Further alternatively, in the flow direction of the second branch 55, a second one-way valve 58 is provided downstream of the second washing module 56, and a second control valve 57 is provided upstream of the second washing module 56. Of course, in other embodiments, the second check valve 58 may be disposed upstream of the second purge module 56 and the second control valve 57 may be disposed downstream of the second purge module 56. In other embodiments, the second check valve 58 may not be provided.

Referring to fig. 1-10, in some embodiments, the water pump 21 is in communication with the water inlet of the first filter element 30 and is disposed downstream of the second end of the return branch 61. Thus, the water pump 21 can perform a good pumping action in the daily water making mode, the return flushing mode and the cartridge cleaning mode. Of course, in other embodiments, the water pump 21 may be disposed upstream of the second end of the return branch 61, downstream of the first end of the return branch 61, or the like.

Referring to fig. 1 to 10, in some embodiments, the water purifying apparatus further includes a third filter element 23 disposed in the water inlet main circuit 10, and the third filter element 23 is disposed downstream of the first end of the return branch circuit 61. Specifically, alternatively, the third filter element 23 may be configured as any one of a PP filter element, an activated carbon filter element, a composite filter element, and the like. That is, the third filter element 23 serves as a rear filter element of the water purifier and cooperates with the first filter element 30, so that the quality of purified water supplied to the outside can be further improved. Of course, in other embodiments, the third filter element 23 may not be provided, and the first water outlet 31 of the first filter element 30 may be directly connected to the main water outlet 12.

It can be understood that there are various relative positions of the first branch 51 and the second branch 55, for example, referring to fig. 3, 4 and 9, the first branch 51 and the second branch 55 are disposed across the upstream and downstream ends of the first filter element 30, and in this case, the two ends of the first branch 51 and the two ends of the second branch 55 may be directly connected or connected to the water inlet main path 10. For another example, referring to fig. 5 and 10, the first branch 51 spans the upstream and downstream ends of the first filter element 30, and the second branch 55 spans the upstream and downstream ends of the third filter element 23.

It should be noted that, in the embodiment of the present utility model, the first end refers to the upstream end of the first branch 51, the second branch 55, or the return branch 61, and the second end refers to the downstream end, that is, the water flows from the first end to the second end.

Referring to fig. 1 and 2, in some embodiments, the water purifying device further includes a faucet 26 disposed at the main water outlet 12, and a third control valve (not shown in the drawings) communicating the faucet 26 with the first water outlet 31, wherein a control switch of the faucet 26 is electrically connected to the third control valve. For example, the faucet 26 may be configured as a hall faucet 26 or an electronic faucet 26 to facilitate user operation of taking water. Of course, in other embodiments, a mechanical faucet 26 is also possible, and a check valve and a high-pressure switch are sequentially connected between the second filter element 22 and the faucet 26.

Specifically, alternatively, in the embodiment of the present utility model, the first control valve 53, the second control valve 57, the third control valve, the main control valve 24, the return control valve 62, and the waste water valve 42 are configured as solenoid valves, and may be other types of on-off valves, which are not specifically limited in this application.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (13)

1. A water purification apparatus, comprising:

the water inlet main way is provided with a main water inlet and a main water outlet which are communicated, and the main water inlet is communicated with a water source;

the water pump is arranged on the water inlet main path;

the first filter element is arranged in the water inlet main path and is provided with a first water outlet and a second water outlet, and the first water outlet is communicated with the main water outlet;

a drainage pipeline communicated with the second water outlet; and

the cleaning assembly comprises a first branch, a first cleaning module and a first control valve, wherein the first cleaning module and the first control valve are arranged on the first branch, the first cleaning module is used for storing cleaning agents, the first control valve is electrically connected with the water pump, and the first branch is communicated with the water inlet of the first filter element.

2. The water purification apparatus of claim 1, further comprising a backflow assembly comprising a backflow branch, a backflow control valve disposed in the backflow branch, a first end of the backflow branch being in communication with the first water outlet and a second end being in communication with the water inlet of the first filter element.

3. The water purification apparatus of claim 2, wherein a first end of the first branch communicates with a first end of the return branch and a second end communicates with a second end of the return branch.

4. The water purification apparatus of claim 2, wherein a first end of the first branch communicates with the main water inlet and a second end communicates with a second end of the return branch.

5. The water purification apparatus of claim 4, further comprising a second filter element disposed in the main inlet passage, the second filter element disposed upstream of the first filter element, a first end of the first branch passage communicating with a water inlet of the second filter element, and a second end communicating with a water outlet of the second filter element.

6. The water purification apparatus of claim 5, further comprising a main solenoid valve disposed in the main inlet passage and electrically connected to the first control valve, the main solenoid valve being disposed downstream of the first end of the first branch passage and upstream of the second filter element.

7. The water purification apparatus of claim 3 or 4, wherein the cleaning assembly further comprises a second branch, a second cleaning module disposed in the second branch, and a second control valve, the second cleaning module configured to store a cleaning agent, the second control valve electrically connected to the first control valve, and the second branch being in communication with the water inlet of the first filter element.

8. The water purification apparatus of claim 7, wherein a first end of the second leg communicates with a first end of the return leg and a second end communicates with a second end of the return leg;

or, the first end of the second branch is communicated with the first end of the backflow branch, and the second end of the second branch is communicated with the second end of the backflow branch.

9. The water purification apparatus of claim 3 or 4, wherein the water pump is in communication with the water inlet of the first filter element and is disposed downstream of the second end of the return branch;

and/or, the water purifying equipment further comprises a third filter element arranged in the water inlet main path, and the third filter element is arranged at the downstream of the first end of the backflow branch path.

10. The water purification apparatus of claim 2, wherein the return assembly further comprises a return check valve disposed in the return leg, the return check valve being capable of restricting water flow from the second end of the return leg to the first end of the return leg.

11. The water purification apparatus of claim 1, wherein a first end of the first leg communicates with the first water outlet and a second end communicates with the water inlet of the first filter element;

or, the first end of the first branch is communicated with the main water inlet, and the second end of the first branch is communicated with the water inlet of the first filter element.

12. The water purification apparatus of any one of claims 3, 4 and 11, wherein the cleaning assembly further comprises a first one-way valve disposed in the first leg, the first one-way valve being capable of restricting water flow from the second end of the first leg to the first end of the first leg.

13. The water purification apparatus of claim 1, wherein the first filter element comprises a reverse osmosis membrane and/or a nanofiltration membrane;

and/or the water purifying device further comprises a flowmeter electrically connected with the first control valve, wherein the flowmeter is used for detecting the flow rate of water flowing out of the second water outlet;

and/or the water purifying device further comprises a water quality sensor electrically connected with the first control valve, wherein the water quality sensor is used for detecting the water quality of the water flowing into the main water inlet.