CN216549852U - Water purification system - Google Patents
Water purification system Download PDFInfo
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- CN216549852U CN216549852U CN202122324742.8U CN202122324742U CN216549852U CN 216549852 U CN216549852 U CN 216549852U CN 202122324742 U CN202122324742 U CN 202122324742U CN 216549852 U CN216549852 U CN 216549852U
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Abstract
The utility model relates to a water purification system, wherein a filter module is provided with a pre-filter unit, a fine filter unit and a post-filter unit which are sequentially arranged along the purified water conveying direction, a flushing structure is arranged between the fine filter unit and the post-filter unit and comprises a four-sided valve and a pressure barrel, the four-sided valve is provided with a first passage and a second passage, a return pipe at the water outlet end of the first passage of the four-sided valve is connected between the concentrated water outlet end of the fine filter unit and the water inlet end of the second passage, so that the purified water pre-stored in the pressure barrel reversely flows through the four-sided valve under the appropriate pressure condition and is flushed through the first passage and the second passage of the four-sided valve sequentially, and the reverse flushing is arranged, after flushing, the interior of the throttling device is completely pure water/purified water, and the generation of crystal salt or the accumulation of organic matters in the throttling device can not be caused even if the throttling device is soaked for a long time, the throttling device is prevented from being blocked, so that the normal work of the waste water pipeline is protected.
Description
Technical Field
The utility model relates to the field of water purification, and particularly belongs to a water purification system.
Background
Domestic purifier is in order to reach good filter effect, and the guide raw water passes through a plurality of filter cores in proper order usually, because some essence filters the filter core and has filtration membrane, passes filtration membrane at the hydrone and can cause certain hindrance, therefore the water conservancy diversion requires water self to have certain power and offsets the resistance of membrane. In addition, the concentrated water needs to be discharged in the form of waste water, a non-pressure-existing passage environment is also needed, and a throttling device is also needed to be arranged at the waste water end. The throttling device is generally made of metal capillary tubes, but a large amount of calcium and magnesium ions are contained in the waste water, so that a large amount of crystal salt is formed in the throttling device after the throttling device is used for a long time in a high-salt or high-hardness area, the throttling device is blocked, the quality of outlet water is poor, the service life of a filtering membrane is shortened, and the like.
The patent number is CN201820126903.8 'a water conservation and energy conservation water purification unit', this water purification unit includes four-sided valve, first filter, second filter, third filter, reverse osmosis membrane filter and pressure bucket, the said four-sided valve has the normal open water inlet end, normal open water outlet end, can close water inlet end and can close water outlet end, the said can close water inlet end and water inlet connection, the said can close water outlet end connects first filter, second filter, third filter and reverse osmosis membrane filter sequentially, the pure water output end of the reverse osmosis membrane filter connects with normal open water inlet end, the said normal open water outlet end connects with pressure bucket and delivery port sequentially; when the pressure barrel is full of water, the closable water inlet end and the closable water outlet end are closed.
Although the normally open water outlet end of the four-sided valve is connected with the reverse osmosis membrane filter, the reverse osmosis membrane filter can be backwashed by using purified water stored in the pressure barrel in advance under necessary conditions, so that pollution of the membrane element is reduced, and the service life of the membrane element is prolonged, the backwashing designed in the way can not play a dredging role in blocking the throttling device, and the problem of blocking the throttling device is not solved all the time in an environment of discharging waste water for a long time.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a water purification system for back flushing a throttling device aiming at the current situation of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a water purification system comprising:
the filter module is provided with a front filter unit, a fine filter unit and a rear filter unit which are sequentially arranged along the conveying direction of the purified water;
the flushing structure is arranged between the fine filtering unit and the post-filtering unit and comprises a four-sided valve and a pressure barrel, the four-sided valve is provided with a first passage and a second passage, and the water inlet end of the second passage is connected with the concentrated water outlet end of the fine filtering unit;
the throttling device is used for outputting the finely filtered concentrated water, and the water inlet end of the throttling device is connected with the water outlet end of the second passage;
the water inlet end of the pressure barrel is in fluid communication with the purified water discharge end of the fine filtration unit, the water outlet end of the pressure barrel is in fluid communication with the water inlet end of the first passage, the water outlet end of the first passage is provided with a return pipe, and the return pipe is connected between the concentrated water discharge end of the fine filtration unit and the water inlet end of the second passage.
In order to ensure the discharge of the purified water after the fine filtration, preferably, the purified water discharge end of the fine filtration unit has a first flow passage, and the first flow passage is provided with a first one-way valve through which only the water flows from the purified water discharge end of the fine filtration unit to the post-filter element in a one-way manner.
In order to ensure that the purified water can be split under certain pressure conditions, preferably, the first flow passage is communicated with a second flow passage, the inlet end of the first passage is in fluid communication with the purified water discharge end of the fine filtration unit through the first flow passage and the second flow passage, and the second flow passage is arranged at the downstream of the first one-way valve.
Specifically, the pressure barrel is connected to the second flow passage through a flow guide pipe.
In order to avoid secondary pollution caused by the backflow of the cleaned water for washing, the backflow pipe is preferably provided with a second one-way valve which only supplies water to flow from the first passage of the four-side valve to the second passage in a one-way mode.
Preferably, the fine filtration unit is a reverse osmosis membrane or/and a nanofiltration membrane.
Preferably, the first flow passage is provided with a pressure switch at a position adjacent to the downstream.
Preferably, the throttling device is a waste water ratio or a waste water electromagnetic valve.
Compared with the prior art, the utility model has the advantages that: in the water purification system, the return pipe of the water outlet end of the first passage of the four-surface valve is connected between the concentrated water outlet end of the fine filtration unit and the water inlet end of the second passage, so that the purified water pre-stored in the pressure barrel reversely flows through the four-surface valve under the appropriate pressure condition, and the washing of the throttling device is realized through the first passage and the second passage of the four-surface valve in sequence.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a water purification system according to an embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of the four-sided valve in the embodiment of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 2, a preferred embodiment of the present invention. In this embodiment, the water purification system includes a filtration module, a flushing structure and a throttling device 3, the filtration module in this embodiment has a pre-filtration unit 11, a fine filtration unit 12 and a post-filtration unit 13 which are sequentially arranged along a purified water conveying direction, and the fine filtration unit 12 is a reverse osmosis membrane or/and a nanofiltration membrane. The throttling device 3 is used for outputting the concentrated water after fine filtration, and the water inlet end of the throttling device is connected with the water outlet end of the second passage 2b, and the throttling device 3 in the embodiment is a wastewater ratio or a wastewater electromagnetic valve.
The flushing structure is arranged between the fine filtering unit 12 and the post-filtering unit 13, and comprises a four-sided valve 21 and a pressure barrel 22, wherein the four-sided valve 21 is provided with a first passage 2a and a second passage 2b, the water inlet end of the second passage 2b is connected with the concentrated water discharge end of the fine filtering unit 12, the water inlet end of the pressure barrel 22 is in fluid communication with the purified water discharge end of the fine filtering unit 12, the water outlet end of the pressure barrel 22 is in fluid communication with the water inlet end of the first passage 2a, the water outlet end of the first passage 2a is provided with a return pipe 20, the return pipe 20 is connected between the concentrated water discharge end of the fine filtering unit 12 and the water inlet end of the second passage 2b, and the return pipe 20 is provided with a second one-way valve 26 for allowing only water to flow from the first passage 2a to the second passage 2b of the four-sided valve 21 in a one-way.
The clean water discharge end of the fine filtration unit 12 has a first flow passage 23, and the first flow passage 23 is provided with a first check valve 25 for allowing only water to flow from the clean water discharge end of the fine filtration unit 12 to the post-filter element in a single direction. The first flow passage 23 is communicated with the second flow passage 24, and the first flow passage 23 is provided with a pressure switch 27 at a position adjacent to the downstream. The inlet end of the first passage 2a is in fluid communication with the clean water discharge end of the fine filter unit 12 via a first flow passage 23, a second flow passage 24, and the second flow passage 24 is arranged downstream of the first check valve 25. The pressure barrel 22 is connected to the second flow passage 24 through a flow guide pipe.
To implement the above process, it is noted that: the faucet in the embodiment is provided with a signal detection module, and can send signals to the control unit to control the working states of other units. The operating pressure of the pressure switch 27 is FgGenerally 0.25MPa or 0.35MPa when the water pressure reaches FgWhen the pressure switch 27 is turned off, the control unit controls the operating states of the other units when detecting the signal that the pressure switch 27 is turned off. The working pressure of the booster pump is FzFor a household water purifier, the pressure is generally 0.5-0.7 MPa.
The working process is as follows:
and (3) a normal water making mode: when the faucet is opened, the signal detection module sends a signal to the control unit, the control unit controls the water inlet electromagnetic valve and the booster pump to be opened, and the waterway system starts normal water production. Because the water outlet pipeline at the rear end of the first one-way valve 25 is open, the pressure of the filtered water meter is nearly zero, pure water/purified water cannot flow into or out of the pressure barrel 22, and the water pressure in the pressure barrel 22 is also zero, namely Fp0. At this time, the water pressure F at the water inlet end of the second passage 2b of the four-sided valve 21wIs the membrane back pressure, approaching the membrane front pressure (i.e. the operating pressure of the booster pump). Due to Fw>FpThe first passage 2a is closed, and pure water/clean water cannot pass through the first passage 2a of the four-sided valve 21. The waste water of the fine filtering unit 12 flows into the throttling device 3 through the second passage 2b of the four-sided valve 21 and is discharged to a sewer or other water containing devices;
a flushing mode:
when the water tap is turned off,the signal detection module sends a signal to the control unit, the water inlet electromagnetic valve and the booster pump are still kept open at the moment, the fine filtration unit 12 normally produces water, but pure water/pure water cannot flow out of the faucet. The pure water/clean water starts to flow into the pressure barrel 22 from the second flow passage 24, and the water pressure inside the pressure barrel 22 starts to rise. At this time, the water pressure F at the water inlet 2 of the second passage 2b of the four-sided valve 21w>FpThe first passage 2a is still closed and pure water/clean water cannot pass through the first passage 2a of the four-sided valve 21. When F is presentpContinuously rises to meet Fp＝FgWhen the pressure switch 27 is turned off, the control unit controls the water inlet electromagnetic valve and the booster pump to be closed after detecting a signal that the pressure switch 27 is turned off. Due to the stop of the booster pump, FwRapid passing of FzDrops to near zero, at which time Fw<FpWhen the water pressure in the first passage 2a moves the tympanic membrane in the four-sided valve 21 to the second passage 2b, the first passage 2a is opened, the pure water/clean water in the pressure tank 22 flows out of the pressure tank 22 under the water pressure, and enters the second passage 2b of the four-sided valve 21 and the throttling device (waste water ratio or waste water electromagnetic valve) through the first passage 2a of the four-sided valve 21 and the one-way valve 2, the whole waste water pipeline is flushed, and the high-concentration waste water in the second passage 2b of the four-sided valve 21 and the throttling device 3 is flushed and discharged to a sewer or other water holding device. When the pressure in the pressure tank 22 drops to approximately zero, the pure water/purified water in the pressure tank 22 stops flowing out, and the whole waterway system stops working. At this time, the second passage 2b of the four-sided valve 21 and the interior of the expansion device 3 (waste water ratio or waste water solenoid valve) are all pure water/pure water, and even if the device is soaked for a long time, the device does not cause the formation of crystal salts or the accumulation of organic substances in the expansion device 3, thereby preventing the expansion device 3 and protecting the waste water pipeline from normal operation.
The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.
Also, directional terms, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like, may be used in the description and claims to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are determined based on the example orientations shown in the figures. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.
Claims (8)
1. A water purification system comprising:
the filter module is provided with a pre-filter unit (11), a fine filter unit (12) and a post-filter unit (13) which are sequentially arranged along the conveying direction of the purified water;
the flushing structure is arranged between the fine filtering unit (12) and the post-filtering unit (13), and comprises a four-sided valve (21) and a pressure barrel (22), wherein the four-sided valve (21) is provided with a first passage (2a) and a second passage (2b), and the water inlet end of the second passage (2b) is connected with the concentrated water outlet end of the fine filtering unit (12);
the throttling device (3) is used for outputting the concentrated water after fine filtration, and the water inlet end of the throttling device is connected with the water outlet end of the second passage (2 b);
the method is characterized in that: the water inlet end of the pressure barrel (22) is in fluid communication with the water purifying discharge end of the fine filtration unit (12), the water outlet end of the pressure barrel (22) is in fluid communication with the water inlet end of the first passage (2a), the water outlet end of the first passage (2a) is provided with a return pipe (20), and the return pipe (20) is connected between the concentrated water discharge end of the fine filtration unit (12) and the water inlet end of the second passage (2 b).
2. The water purification system of claim 1, wherein: the water purifying device is characterized in that a first flow channel (23) is arranged at the water purifying discharge end of the fine filtering unit (12), and a first one-way valve (25) which only supplies water to flow from the water purifying discharge end of the fine filtering unit (12) to the post-filter element in a one-way mode is arranged on the first flow channel (23).
3. The water purification system of claim 2, wherein: the first flow passage (23) is communicated with a second flow passage (24), the inlet end of the first passage (2a) is in fluid communication with the clean water discharge end of the fine filtration unit (12) through the first flow passage (23) and the second flow passage (24), and the second flow passage (24) is arranged at the downstream of the first one-way valve (25).
4. The water purification system of claim 3, wherein: the pressure barrel (22) is connected to the second flow passage (24) through a flow guide pipe.
5. The water purification system of claim 4, wherein: the return pipe (20) is provided with a second one-way valve (26) which only supplies water flow to flow from the first passage (2a) to the second passage (2b) in one way from the four-sided valve (21).
6. The water purification system of claim 5, wherein: the fine filtering unit (12) is a reverse osmosis membrane or/and a nanofiltration membrane.
7. The water purification system of claim 6, wherein: the first flow passage (23) is provided with a pressure switch (27) at a position adjacent to the downstream.
8. The water purification system of claim 7, wherein: the throttling device (3) is a waste water ratio or waste water electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122324742.8U CN216549852U (en) | 2021-09-23 | 2021-09-23 | Water purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122324742.8U CN216549852U (en) | 2021-09-23 | 2021-09-23 | Water purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216549852U true CN216549852U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122324742.8U Active CN216549852U (en) | 2021-09-23 | 2021-09-23 | Water purification system |
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| Country | Link |
|---|---|
| CN (1) | CN216549852U (en) |
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2021
- 2021-09-23 CN CN202122324742.8U patent/CN216549852U/en active Active
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