CN217025376U

CN217025376U - Water purifying equipment

Info

Publication number: CN217025376U
Application number: CN202220029261.6U
Authority: CN
Inventors: 柯映充; 孙天厚; 郑跃东
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-07-22
Anticipated expiration: 2032-01-06

Abstract

The utility model relates to the technical field of domestic water purification, and provides a water purification device, which comprises: a backflow outlet is formed between the outlet and the inlet of the water outlet pipeline; a backflow inlet is formed between the outlet and the inlet of the water inlet pipeline; a waste water line; the return pipeline is communicated with the return inlet and the return outlet; the first valve is arranged on the water inlet pipeline; the second valve is arranged on the return pipeline; the main filter element assembly is provided with a raw water inlet, a pure water outlet and a waste water outlet, wherein a water inlet pipeline is communicated with the raw water inlet, an inlet of a water outlet pipeline is communicated with the pure water outlet, and the waste water pipeline is communicated with the waste water outlet. After water purification unit standby a period, the return line switches on, can replace the old water of main filter element group spare pure water end, avoids the pure water end to appear the phenomenon that impurity concentration increases under the osmotic action, can also replace the high concentration waste water of waste water end for the water of low concentration, avoids the waste water end phenomenon such as scale deposit jam to appear, has promoted the life of filter core.

Description

Water purifying equipment

Technical Field

The utility model relates to the technical field of domestic water purification, in particular to a water purifying device.

Background

With the pursuit of people for quality of life, the water quality of drinking water is getting more attention. Reverse osmosis water purifiers are becoming more popular because of the fresher, more sanitary, and safer purified water produced by the reverse osmosis water purifiers. Tap water has higher solubility solid, and reverse osmosis filter element group spare can be under the effect of booster pump, and with the bulk ion of former aquatic stop in front of reverse osmosis membrane, and make the solubility solid of the water through reverse osmosis membrane accord with the standard of straight drinking water. In the correlation technique, after water purification unit standby for a period of time, the total dissolved solid concentration of filter core pure water end can rise gradually, and the phenomenon that peculiar smell, bacterial growing and scale deposit are blockked up may exist after standing for a long time.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve at least one of the problems occurring in the related art. Therefore, the utility model provides the water purifying equipment, the return pipeline can clean the pure water end and the waste water end of the main filter element assembly, the phenomena of old water and scaling in the pipeline are avoided, the quality of drinking water is improved, and the service life of the filter element is prolonged.

According to the embodiment of the utility model, the water purifying equipment comprises:

a waste water line;

a backflow inlet is formed between an inlet and an outlet of the water inlet pipeline;

a backflow outlet is formed between the inlet and the outlet of the water outlet pipeline;

the water inlet pipeline is communicated with the raw water inlet, the inlet of the water outlet pipeline is communicated with the pure water outlet, and the waste water pipeline is communicated with the waste water outlet; the main filter element assembly comprises a plurality of sub filter element assemblies connected in parallel;

the return pipeline is communicated with the return inlet and the return outlet;

the first valve is arranged on the water inlet pipeline;

a second valve mounted on the return line.

According to the water purification equipment provided by the embodiment of the utility model, after the water purification equipment is standby for a period of time, the return pipeline is conducted, the water inlet pipeline injects running water into the water purification equipment, so that water at the pure water end of the main filter element assembly can be replaced, the phenomenon that the concentration of total dissolved solids is increased under the action of osmosis of the water at the pure water end is avoided, the growth of microorganisms such as bacteria is avoided, high-concentration wastewater at the waste water end of the main filter element assembly can be replaced by low-concentration water, the phenomena that the waste water end is scaled and blocked under the high-concentration wastewater are avoided, and the service life of the main filter element assembly is prolonged.

According to an embodiment of the present invention, further comprising:

the booster pump is installed on the water inlet pipeline and be located the backward flow import with between the raw water import.

According to an embodiment of the present invention, further comprising:

and the check valve is arranged on the return pipeline.

According to an embodiment of the present invention, further comprising:

leading filter element group spare is installed on the water intake pipe, leading filter element group spare is suitable for right liquid in the water intake pipe carries out prefilter.

According to an embodiment of the present invention, further comprising:

and the rear filter element assembly is arranged on the water outlet pipeline and is positioned at the upstream of the backflow outlet.

According to one embodiment of the utility model, the front filter element assembly and the rear filter element assembly form a composite filter element assembly.

According to one embodiment of the utility model, the main filter element assembly comprises:

the RO filter element is provided with a first raw water inlet, a first pure water outlet and a first wastewater outlet, the first raw water inlet is communicated with the outlet of the booster pump, the first pure water outlet is communicated with the inlet of the water outlet pipeline, and the first wastewater outlet is communicated with the wastewater pipeline;

the NF filter element is provided with a second raw water inlet, a second pure water outlet and a second wastewater outlet, the second raw water inlet is communicated with the outlet of the booster pump, the second pure water outlet is communicated with the inlet of the water outlet pipeline, and the second wastewater outlet is communicated with the wastewater pipeline;

and the regulating valve is arranged between the second pure water outlet and the inlet of the water outlet pipeline and is suitable for regulating the proportion of liquid at the outlet of the booster pump flowing through the RO filter element and the NF filter element.

According to an embodiment of the present invention, further comprising:

the first drinking water branch is communicated with the outlet of the water outlet pipeline;

the second drinking water branch is communicated with the outlet of the water outlet pipeline;

a third valve installed on the first drinking water branch;

and the pressure valve is arranged on the water outlet pipeline and is positioned at the upstream of the backflow outlet.

According to an embodiment of the present invention, further comprising:

the domestic water pipeline is communicated with the pipeline between the preposed filter element component and the backflow inlet;

and the fourth valve is arranged on the domestic water pipeline.

According to an embodiment of the present invention, further comprising:

a first detection member mounted on the water inlet conduit downstream of the pre-filter element assembly;

and the second detection part is arranged on the water outlet pipeline and is positioned at the downstream of the rear filter element component.

According to one embodiment of the utility model, the first valve, the second valve and the regulating valve are all electrically operated valves.

According to an embodiment of the present invention, further comprising:

a controller, the controller with first valve the second valve governing valve and booster pump signal connection, the controller is used for controlling based on predetermineeing the standby time length first valve with the second valve is opened and is controlled the booster pump starts, and based on predetermine the standby time length control the governing valve switches on first time length, and first time length back disconnection second time length, and the second time length back closure the second valve.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the water purifying equipment provided by the embodiment of the utility model comprises a water inlet pipeline, a waste water pipeline, a water outlet pipeline, a return pipeline, a main filter element component, a first valve and a second valve. The main filter element assembly is provided with a raw water inlet, a pure water outlet and a waste water outlet, the raw water inlet receives raw water from a water inlet pipeline, the main filter element assembly filters the raw water to form pure water and waste water, the pure water is discharged along a water outlet pipeline for a user, and the waste water is discharged along a waste water pipeline. A backflow inlet is formed between the inlet and the outlet of the water inlet pipeline, a backflow outlet is formed between the inlet and the outlet of the water outlet pipeline, and a backflow pipeline is arranged between the backflow inlet and the backflow outlet. The water inlet pipeline is provided with a first valve, and the return pipeline is provided with a second valve for controlling the on-off of the corresponding pipeline. After water purification unit standby a period, the return line switches on, the inlet tube is to injecting running water in the water purification unit, can replace the water of main filter element group pure water end, the phenomenon that total dissolved solid concentration increases appears in the water of avoiding the pure water end under the osmosis, avoid breeding microorganisms such as bacterium, can also replace the high concentration waste water replacement of main filter element group waste water end for the water of low concentration, avoid the waste water end to appear phenomenons such as scale deposit jam under the high concentration waste water, the life of main filter element group has been promoted.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a water purifying apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic view of a reflux process of a water purification apparatus provided in an embodiment of the present invention;

fig. 3 is a schematic view of a first drinking water branch outlet of the water purifying apparatus provided by the embodiment of the utility model;

fig. 4 is a schematic diagram of a second drinking water branch outlet of the water purifying apparatus provided by the embodiment of the utility model;

fig. 5 is a schematic drawing of domestic water outlet of the water purifying device provided by the embodiment of the utility model.

Description of the reference numerals:

100. a water inlet pipeline; 102. a water outlet pipeline; 104. a waste water line; 106. a first drinking water branch; 108. A second drinking water branch; 110. a booster pump;

120. a primary filter element assembly; 122. an RO filter element; 124. a NF filter element; 126. adjusting a valve;

130. a return line;

140. a first valve; 142. a second valve; 144. a one-way valve; 146. a third valve; 148. a pressure valve;

150. a composite filter element assembly;

160. a domestic water pipeline; 162. a fourth valve;

170. a flow meter; 172. a first detection part; 174. a second detection member.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

In the related technology, when water is produced by the water purifying equipment, pure water flows out along the water outlet pipeline, waste water is discharged along the waste water pipeline, and liquid in the pipeline is in a flowing state and is not influenced by old water. When water purification unit is in standby state, because reverse osmosis filter core's forward osmosis principle, dense water end salt can permeate the pure water end, leads to the conductivity rising of pure water end, can form old water in the pipeline when standby time is longer, and old water can bring adverse effect to user's use and the life of filter core. A return pipeline is arranged in the water purifying equipment, and the pure water with high conductivity flows back to the front end of the reverse osmosis filter element for secondary filtration, so that the influence of old water can be avoided.

The water purifying apparatus provided by the embodiment of the utility model comprises a water inlet pipeline 100, a water outlet pipeline 102, a waste water pipeline 104, a main filter element assembly 120, a return pipeline 130, a first valve 140 and a second valve 142.

Referring to fig. 1 to 5, solid black arrows indicate the flow of raw water such as tap water or domestic water, dashed black arrows indicate the flow of wastewater, and dashed gray arrows indicate the flow of pure water.

The inlet of the water inlet pipeline 100 is connected to an external water source, such as a tap water pipe, a water storage tank, etc., and can provide sufficient raw water for the water purifying apparatus. The first valve 140 is disposed on the water inlet pipe 100 to control the connection and disconnection of the water inlet pipe 100.

The main filter element assembly 120 is constructed with a raw water inlet, a pure water outlet and a waste water outlet, and is internally provided with a reverse osmosis filter element and the like, so that raw water containing impurities can be filtered, and particulate matters, dissolved salts and the like in the raw water can be removed.

The water inlet line 100 is connected to a raw water inlet, and the raw water is filtered by the main filter element assembly 120 to form pure water and wastewater. The inlet of the water outlet pipe 102 is connected to the pure water outlet of the main filter element assembly 120, and pure water flows out along the water outlet pipe 102 for users to use. The waste water line 104 is connected to the waste water outlet and allows the discharge of waste water having a relatively high total dissolved solids concentration formed during filtration.

The pure water at the outlet of the water outlet pipeline 102 may be used directly or after subsequent treatment, and may be treated according to the user's choice.

In the water production process of the conventional water purification apparatus, the water inlet pipeline 100 is connected to external tap water, and the tap water can be introduced into the raw water inlet of the main filter element assembly 120. The pure water outlet of the main filter element assembly 120 forms filtered pure water to be discharged along the water outlet pipe 102, the wastewater outlet forms high-concentration wastewater generated during filtering, and the high-concentration wastewater is discharged along the wastewater pipe 104.

It should be noted that, the end of the filter element inside the main filter element assembly 120 close to the raw water inlet is a raw water end, the end close to the pure water outlet is a pure water end, and the end close to the waste water outlet is a waste water end.

When stopping system water, water purification unit is in standby state, and partial pure water stops at the pure water end of main filter element subassembly 120, and partial waste water stops at the waste water end of main filter element subassembly 120, because the inside flow that does not have the water of water purification unit, the quality of water that pure water end and waste water end can change.

At the pure water end, due to the existence of osmosis, the total dissolved solid concentration at the pure water end is gradually increased, and the total dissolved solid concentrations at the raw water end and the pure water end tend to be balanced to form old water with higher total dissolved solid concentration. When the water purification apparatus is turned on again, the first cup of water in the water outlet pipeline 102 is cloudy and cannot be drunk. High concentration water is also prone to develop bacteria and other microorganisms, which may produce odors that affect the use of the user.

At the waste water end of main filter element group spare 120, because there is not running water to flow, the solid that dissolves in the high concentration waste water can be at waste water end scaling, and then blocks up main filter element group spare 120's waste water end, has increased the pressure when filtering, causes main filter element group spare 120 life's loss.

According to the water purifying apparatus provided by the embodiment of the present invention, a backflow inlet is formed between the inlet and the outlet of the water inlet pipeline 100, a backflow outlet is formed between the inlet and the outlet of the water outlet pipeline 102, the backflow outlet and the backflow inlet are communicated through the backflow pipeline 130, and the backflow pipeline 130 is provided with the second valve 142.

It can be understood that the return line 130 can make the water inside the water purifying device flow when in standby, and can replace the old water at the pure water end and the waste water end, thereby avoiding the water body from deteriorating and scaling.

After the water purifying apparatus is in standby for a period of time, the first valve 140 and the second valve 142 are opened, the raw water inlet receives external tap water, the tap water forms pure water and wastewater after being filtered by the main filter element assembly 120, and the pure water staying at the original pure water end and the wastewater staying at the original wastewater end can be replaced. The return line 130 is connected, and the pure water staying in the water outlet line 102 can be filtered again through the main filter element assembly 120, so that the phenomenon of concentration increase of the pure water in the water outlet line 102 is avoided, and clean drinking water can be provided for users at any time.

At the waste water end of main filter element group spare 120, because pure water does not contain impurity basically in return line 130, the waste water impurity concentration that produces during the backward flow is lower, and the high concentration waste water of waste water end is replaced by the pure water of low concentration, can avoid waste water end to appear the scale deposit phenomenon, has promoted the life of filter element group spare.

In some embodiments, the water purifying apparatus further includes a booster pump 110, and the booster pump 110 is installed on the water inlet line 100 between the return inlet and the raw water inlet.

It can be understood that the micro-porous structure is formed in the main filter element assembly 120, so that particles in raw water can be filtered, and the raw water has a large filtering resistance when flowing. Under the action of the pressure of tap water, the water in the main filter element assembly 120 flows slowly, the filtering efficiency is low, and the flux is small. After the booster pump 110 is installed on the water inlet pipeline 100, the water pressure entering the main filter element assembly 120 is higher, the filtration flux of the water purification equipment is larger, and the requirement of larger drinking water can be met.

In some embodiments, the water purification apparatus further includes a check valve 144, the check valve 144 being installed on the return line 130.

It can be understood that, when the water purifying apparatus performs the replacement of old water in the pipe, the inlet of the booster pump 110 may receive the tap water from the water inlet pipe 100 or the old water from the return pipe 130, and after the one-way valve 144 is disposed on the return pipe 130, the old water in the return pipe 130 may flow to the raw water inlet, so as to facilitate the replacement of the liquid in the pure water end and the waste water end, and to help to eliminate the old water in the pipe. When the return line 130 is disposed between the water inlet line 100 and the water outlet line 102, the check valve 144 can prevent raw water in the water inlet line 100 from directly flowing into the outlet of the water outlet line 102, so as to ensure that raw water cannot flow back into the first drinking water branch 106 and the second drinking water branch 108.

In some embodiments, the water purifying apparatus further includes a pre-filter assembly installed on the water inlet pipe 100 to primarily filter the liquid in the water inlet pipe 100.

It can be understood that the tap water has a rough treatment process, contains more impurities and more particles, and cannot reach the standard of direct drinking. Directly inputing the raw water import with the running water and filtering, can lead to main filter element group spare 120's filtration pressure great, main filter element group spare 120's life shortens, has promoted user's use cost.

Running water is handled in advance through leading filter element group spare before getting into main filter element group spare 120, gets rid of the large granule impurity that the aquatic contains, can reduce main filter element group spare 120's filtration pressure, is favorable to promoting main filter element group spare 120's life.

In some embodiments, the water purification apparatus further comprises a rear filter cartridge assembly mounted on the water outlet conduit 102.

It can be understood that the post-filter element assembly can be a carbon rod or other filter structure, and the post-filter element assembly receives the pure water from the main filter element assembly 120, and the taste can be obviously improved through the pure water filtered by the post-filter element assembly.

It should be noted that the rear filter element assembly is located at the upstream of the backflow outlet, and when the water purifying equipment performs backflow cleaning in the pipeline, old water at the water outlet of the rear filter element assembly can be cleaned and replaced together, so that the old water in the pipeline is avoided.

The closer the position of the backflow outlet is to the outlet of the water outlet pipe 102, the lower the possibility of the remaining stale water in the water purifying apparatus, and the lower the possibility of the user contacting the stale water when the user uses the apparatus again, so the backflow outlet is disposed at the outlet of the water outlet pipe 102.

Under the condition that water purification unit includes leading filter element group spare, main filter element group spare 120 and rearmounted filter element group spare, water purification unit forms tertiary filtration system, has effectively promoted the quality of water of drinking water.

In some embodiments, the pre-filter element assembly and the post-filter element assembly are integrated together to form the composite filter element assembly 150.

It can be understood that the composite filter element assembly 150 integrates the front filter element assembly and the rear filter element assembly together, which can make the structure of the water purifying apparatus simpler. The composite filter element assembly 150 is arranged in parallel with the main filter element assembly 120, so that the volume of the water purifying equipment is reduced, an ultrathin structure is formed, and convenience is brought to users for installation and use.

In some embodiments, the main cartridge assembly 120 includes an RO cartridge 122, an NF cartridge 124, and a regulator valve 126.

The RO filter element 122 is configured with a first raw water inlet, a first pure water outlet and a first wastewater outlet, the first raw water inlet is communicated with the inlet of the booster pump 110, the first pure water outlet is communicated with the inlet of the water outlet pipeline 102, and the first wastewater outlet is communicated with the wastewater pipeline 104. The NF filter element 124 is configured with a second raw water inlet, a second pure water outlet and a second wastewater outlet, the second raw water inlet is communicated with the outlet of the booster pump 110, the second pure water outlet is communicated with the inlet of the water outlet pipeline 102, and the second wastewater outlet is communicated with the wastewater pipeline 104. A regulating valve 126 is installed between the second pure water outlet and the inlet of the water outlet line 102, and is adapted to regulate the ratio of the liquid flowing through the RO filter cartridge 122 and the NF filter cartridge 124 at the outlet of the booster pump 110.

It can be understood that the RO filter cartridge 122 is more elaborate and has a higher salt rejection, the NF filter cartridge 124 has a lower salt rejection, and the RO filter cartridge 122 and the NF filter cartridge 124 are connected in parallel, and both can work independently or simultaneously, and can meet different filtering requirements.

In the case that the main filter element assembly 120 includes the RO filter element 122 and the NF filter element 124, the pure water ends of the RO filter element 122 and the NF filter element 124 are respectively cleaned and replaced with old water, and the respective cleaning can be achieved by controlling the opening and closing of the regulating valve 126.

In some embodiments, the main filter element assembly 120 includes a plurality of sub-filter element assemblies, and the plurality of sub-filter element assemblies are arranged in parallel, which can effectively improve the filtering flux of the main filter element assembly 120. Meanwhile, the size of the sub-filter element component is small, and an ultrathin structure can be formed.

In some embodiments, the water purification apparatus may supply water to a faucet or to an in-line machine, and includes a first drinking water branch 106 and a second drinking water branch 108.

The first drinking water branch 106 and the second drinking water branch 108 are both connected to the outlet of the water outlet pipeline 102, a third valve 146 is installed on the first drinking water branch 106, and the third valve 146 can control the on-off of the first drinking water branch 106. The outlet pipe 102 is provided with a pressure valve 148, and the pressure valve 148 is automatically opened when the downstream water pressure is reduced, i.e. when the water demand exists, the pressure valve 148 automatically conducts the outlet pipe 102.

In the case that a return outlet is formed on the water outlet pipe 102, the pressure valve 148 is installed upstream of the return outlet, and the pressure valve 148 can control the on/off of the water outlet pipe 102 when the water purification device performs in-pipe cleaning.

It will be appreciated that when the third valve 146 is opened, the tap is discharging water, the pressure of the water in the first drinking water branch 106 decreases, and the pressure valve 148 is opened when the pressure decreases.

When the second drinking water branch 108 is connected to the pipeline machine, the pipeline machine is opened, the water pressure in the second drinking water branch 108 is reduced, and the pressure valve 148 is turned on when sensing the pressure reduction.

It should be noted that the first valve 140, the second valve 142, the third valve 146, the pressure valve 148 and the regulating valve 126 may be electric valves, the electric valves are connected to the control device by signals, and the electric valves are linked to realize the functions of preparing drinking water and cleaning pipelines.

In some embodiments, the water purifying apparatus further includes a domestic water pipeline 160 and a fourth valve 162, and the fourth valve 162 is installed on the domestic water pipeline 160 and can control the on/off of the domestic water pipeline 160.

It can be understood that as the living standard increases, the requirements of users for water for washing mouth and rice and vegetables increase. The pipeline between the front filter element component and the backflow inlet is communicated with a domestic water pipeline 160, and the domestic water after primary filtration can be provided for users. The domestic water contains less impurities, which is beneficial to the health of users.

In some embodiments, the water purifying apparatus further includes a first detecting part 172 and a second detecting part 174. A first sensing member 172 is mounted on the inlet line 100 downstream of the pre-filter assembly. A second sensing member 174 is mounted on the outlet conduit 102 downstream of the post-filter cartridge assembly.

It is understood that the first detecting component 172 and the second detecting component 174 can be TDS probes, the first detecting component 172 is used for detecting the TDS value of the raw water, and the second detecting component 174 is used for detecting the TDS value in the water outlet pipeline 102. The water purifying apparatus can determine whether to perform the pipeline backflow cleaning based on the TDS values detected by the first detecting component 172 and the second detecting component 174, and intelligently adjust the duration and the amount of water of the pipe backflow cleaning, so that the pipe can be prevented from being aged, and the phenomenon of scaling and blockage at the waste water end can be avoided.

The water purification device provided by the embodiment of the utility model further comprises a controller, wherein the first valve 140, the second valve 142, the third valve 146, the fourth valve 162, the regulating valve 126, the pressure valve 148 and the like are all electrically operated valves, and the electrically operated valves are all in signal connection with the controller. The first valve 140, the second valve 142, the third valve 146, the fourth valve 162, the regulating valve 126 and the pressure valve 148 can be linked under the action of the controller, and the water production and in-pipe cleaning of the water purifying equipment can be intelligently controlled.

In some embodiments, the tap may be discharged by opening the third valve 146, and the first valve 140 and the third valve 146 are opened simultaneously, so as to provide sufficient tap water for the water purifying device.

In some embodiments, the pipeline machine is opened, the second drinking water branch 108 is conducted, and the first valve 140 and the pressure valve 148 are opened synchronously, so as to provide sufficient tap water for the water purifying apparatus.

The water purification device is in a standby state after stopping water production, and when the standby time is longer, the impurity concentration of the pure water in the water outlet pipeline 102 is increased. Therefore, the water purifying equipment can preset the standby time, and after the preset standby time, the water purifying equipment starts the in-pipe backflow cleaning work.

After a preset standby time period, the controller controls the first and

second valves

140 and 142 to be opened, and controls the booster pump 110 to supply water into the main filter element assembly 120. After the return line 130 is conducted, the return cleaning operation of the line can be realized.

In the case where the main filter cartridge assembly 120 includes an RO filter cartridge 122 and an NF filter cartridge 124, the pure water ends of the RO filter cartridge 122 and the NF filter cartridge 124 need to be back-washed, respectively.

The controller turns the damper valve 126 on for a first period of time to allow the stale water from the clean water side of the NF cartridge 124 to drain, and then turns the damper valve 126 off for a second period of time. When the regulating valve 126 is turned off, the stale water at the pure water side of the RO cartridge 122 can be drained, and the second period of time is longer than the first period of time because the RO cartridge 122 is finer. Through switching over the state of governing valve 126, can wash RO filter core 122 and NF filter core 124 one by one, can wash the pure water end of RO filter core 122 and NF filter core 124 clean respectively, and then effectively promoted the life of main filter core subassembly 120.

After the pipeline backflow cleaning is finished, the second valve 142 is disconnected, the backflow pipeline 130 is in a blocking state, the water purifying device can return to a water making state and also return to a standby state, and whether the first valve 140 and the booster pump 110 are closed or not is determined according to the state of the water purifying device.

In some cases, after the line purge is completed, the outlet of the outlet line 102 has no water demand, and the pressure valve 148 is in a closed state, where the first valve 140 and the booster pump 110 are directly closed.

In some cases, after the cleaning of the water outlet pipe 102 is finished, there is a water demand at the outlet of the water outlet pipe 102, and the pressure valve 148 is in a conducting state, so as to keep the first valve 140 and the booster pump 110 working continuously to provide drinking water for the outlet of the water outlet pipe 102.

The following description will be made with reference to the following embodiments:

when the water purifying device enters the standby state for 20 minutes, the water purifying device automatically starts a backflow program and starts to time. When the first valve 140, the booster pump 110, the second valve 142 and other components are opened, the regulating valve 126 is completely opened in the first 15 seconds and closed in the last 45 seconds, and when the backflow time reaches 60 seconds, the second valve 142 is immediately closed. At this time, if the pressure valve 148 is in a closed state, the booster pump 110 and the first valve 140 are sequentially closed, and the water purifying apparatus enters a standby state. If the pressure valve 148 is in the conducting state, indicating that the user is taking water during backflow or the line machine is replenishing water, the first valve 140 is kept in the open state, and the booster pump 110 continues to operate. When the user finishes taking water or the pipeline machine is full of water, the pressure valve 148 is disconnected, the booster pump 110 and the first valve 140 of the water purification device are closed in sequence, and the water purification device enters a standby state.

When the water purifying device enters the standby state for 24 hours, the water purifying device automatically starts a backflow program and starts to time. When the first valve 140, the booster pump 110, the second valve 142 and other components are opened, the regulating valve 126 is completely opened in the first 15 seconds and closed in the last 45 seconds, and when the backflow time reaches 60 seconds, the second valve 142 is immediately closed. At this time, if the pressure valve 148 is in a closed state, the booster pump 110 and the first valve 140 are sequentially closed, and the water purifying apparatus enters a standby state. If pressure valve 148 is in the on state, indicating that the user is taking water during a back flow or that the line machine is replenishing water, first valve 140 is kept in the open state and booster pump 110 continues to operate. When the user finishes taking water or the pipeline machine is full of water, the pressure valve 148 is disconnected, the booster pump 110 and the first valve 140 of the water purification device are closed in sequence, and the water purification device enters a standby state.

Use the rate of recovery to be 60% to 70% water purification unit as an example, the TDS concentration of RO filter core 122 waste water end generally is 3 times of raw water TDS, can reduce the concentration of RO filter core 122 waste water end to near with raw water TDS through above return line, can greatly reduced RO filter core 122 surface scale's risk, effectively prolonged the life of filter core.

The attached table 1 shows test data of the water purification apparatus provided in the embodiment of the present invention and a conventional water purification apparatus:

attached Table 1

According to an embodiment of the present invention, a water purifying apparatus is provided, which includes a water inlet pipe 100, a waste water pipe 104, a water outlet pipe 102, a return pipe 130, a main filter element assembly 120, a first valve 140, and a second valve 142. The main filter element assembly 120 is configured with a raw water inlet that receives raw water from the water inlet line 100, a pure water outlet that discharges pure water along the water outlet line 102 for human use and a waste water outlet that discharges along the waste water line 104 after the raw water is filtered by the main filter element assembly 120. A return inlet is formed between the inlet and the outlet of the inlet pipe 100, a return outlet is formed between the inlet and the outlet of the outlet pipe 102, and a return pipe 130 is disposed between the return inlet and the return outlet. The water inlet pipeline 100 is provided with a first valve 140, and the return pipeline 130 is provided with a second valve 142 for controlling the on-off of the corresponding pipeline. After water purification unit standby a period, return line 130 switches on, water inlet pipe 100 injects the running water into water purification unit, can replace the water of main filter element group 120 pure water end, the phenomenon that the water of avoiding the pure water end appears totally dissolving the solid content and increasing under the osmotic action, avoid breeding microorganisms such as bacterium, can also replace the high concentration waste water of main filter element group 120 waste water end for the water of low concentration, avoid the waste water end to appear phenomenons such as scale deposit jam under the high concentration waste water, the life of main filter element group 120 has been promoted.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A water purification unit, characterized in that includes:

a waste water line;

the first valve is arranged on the water inlet pipeline;

a second valve mounted on the return line;

the water inlet pipeline is communicated with the raw water inlet, the inlet of the water outlet pipeline is communicated with the pure water outlet, and the waste water pipeline is communicated with the waste water outlet; the main filter element assembly includes a plurality of sub-filter element assemblies connected in parallel.

2. The water purification apparatus of claim 1, further comprising:

3. The water purification apparatus of claim 2, further comprising:

and the check valve is arranged on the return pipeline.

4. The water purification apparatus of claim 2, further comprising:

5. The water purification apparatus of claim 4, further comprising:

the rear filter element component is arranged on the water outlet pipeline and is positioned at the upstream of the backflow outlet;

the front filter element component and the rear filter element component form a composite filter element component.

6. The water purification apparatus of any one of claims 2 to 5, wherein the main filter element assembly comprises:

7. The water purification apparatus of claim 6, further comprising:

a third valve installed on the first drinking water branch;

8. The water purification apparatus of claim 4, further comprising:

the domestic water pipeline is communicated with a pipeline between the preposed filter element component and the backflow inlet;

and the fourth valve is arranged on the domestic water pipeline.

9. The water purification apparatus of claim 5, further comprising:

a first detection member mounted on the water inlet line and located downstream of the pre-filter element assembly;

10. The water purification apparatus of claim 6, wherein the first valve, the second valve, and the regulating valve are all electrically operated valves.

11. The water purification apparatus of claim 10, further comprising: