CN215049158U - Reverse osmosis filtration system - Google Patents

Reverse osmosis filtration system Download PDF

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Publication number
CN215049158U
CN215049158U CN202120720872.0U CN202120720872U CN215049158U CN 215049158 U CN215049158 U CN 215049158U CN 202120720872 U CN202120720872 U CN 202120720872U CN 215049158 U CN215049158 U CN 215049158U
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pure water
reverse osmosis
water
wastewater
filtration system
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CN202120720872.0U
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Chinese (zh)
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曾治钧
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Guangdong Lingshang Water Purification Technology Co Ltd
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Guangdong Lingshang Water Purification Technology Co Ltd
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Abstract

The utility model provides a reverse osmosis filtration system, it includes raw water input, waste water output and pure water output, still includes first control valve, booster pump, reverse osmosis filter element group spare, first check valve, second check valve and waste water control valve, reverse osmosis filter element group spare is last to be provided with water purification import, waste water export and pure water export; a wastewater anti-reverse structure and a pure water anti-reverse structure are arranged in the reverse osmosis filter element assembly; the water flow is composed of a purified water inlet flow passage, a purified water outlet flow passage, a wastewater outlet flow passage and a purified water return flow passage; through the setting of this reverse osmosis filtration system, the first cup of water TDS value that restarts after can reducing the system standby effectively to the rivers flow direction stability in wherein water route is ensured.

Description

Reverse osmosis filtration system
Technical Field
The utility model relates to a water filtration technology field specifically is a reverse osmosis filtration system.
Background
At present, because reverse osmosis and the used core component of the water purification of receiving nanofiltration are the pellicle, when the water purifier standby, the TDS value of the water that stops in the former water side is higher than the TDS value that stops in the water of pure water side, makes in the water of the water salinity easy infiltration to the pure water side of former water side, and the final water salinity that can make the former water side of semi-permeable membrane and pure water side both sides divides the concentration unanimous basically. Therefore, when the water purifier is in standby for a period of time, the TDS value of the first cup of water taken by a user is high, and the water quality cannot meet the filtering requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reverse osmosis filtration system for overcoming the not enough of prior art.
A reverse osmosis filtration system comprises a raw water input end, a wastewater output end and a pure water output end, and is characterized by also comprising a first control valve, a booster pump, a reverse osmosis filter element assembly, a first one-way valve, a second one-way valve and a wastewater control valve, wherein the reverse osmosis filter element assembly is provided with a pure water inlet, a wastewater outlet and a pure water outlet; a wastewater reverse-flow prevention structure for preventing wastewater reverse flow and/or a pure water reverse-flow prevention structure for preventing pure water reverse flow are/is arranged in the reverse osmosis filter element assembly;
the water flow flows from the raw water input end, the first control valve and the booster pump to the purified water inlet to form a purified water inlet flow passage;
the water flows from the pure water outlet to the pure water output end along the first check valve to form a pure water outlet flow channel;
the water flows along the wastewater outlet, the wastewater control valve and the wastewater output end to form a wastewater outlet flow channel;
and water flows from the pure water outlet, the second one-way valve, the booster pump to the pure water inlet to form a pure water return flow channel.
Further, a front filter element assembly is arranged between the raw water input end and the first control valve.
Further, a three-way ball valve is arranged between the raw water input end and the front filter element assembly.
Further, the first check valve is set to be a non-pressure check valve.
Further, a high-voltage switch is arranged between the first one-way valve and the pure water output end.
Further, the reverse osmosis filter element component comprises a central pipe and an RO membrane component arranged around the central pipe; the pure water inlet end of the RO membrane component is communicated with the pure water inlet, and the pure water outlet end of the central tube is communicated with the pure water outlet; the wastewater anti-reverse structure comprises a purified water one-way valve arranged between the purified water inlet and the purified water inlet end, and/or the purified water anti-reverse structure comprises a purified water one-way valve arranged between the purified water outlet end and the purified water outlet.
Further, the cracking pressure of the second one-way valve is larger than 0 MP.
Further, a second control valve is arranged between the pure water outlet and a second one-way valve, and the second one-way valve is set to be a non-pressure one-way valve.
The beneficial effects of the utility model reside in that:
through the setting of this reverse osmosis filtration system, the first cup of water TDS value that restarts after can reducing the system standby effectively to the rivers flow direction stability in wherein water route is ensured.
Drawings
Fig. 1 is a schematic diagram of an application of example 1 of a reverse osmosis filtration system of the present invention;
fig. 2 is a schematic view of an embodiment 2 of a reverse osmosis filtration system according to the present invention;
FIG. 3 is a schematic view of a partial structure A of a reverse osmosis filter element assembly according to the present invention;
FIG. 4 is a schematic view of a partial structure B of the reverse osmosis filter element assembly of the present invention;
description of reference numerals:
a raw water input end 1, a three-way ball valve 11,
A front filter element component 2,
A first control valve 31, a booster pump 32,
A reverse osmosis filter element assembly 4, a purified water inlet 401, a waste water outlet 402, a purified water outlet 403, a central pipe 41, a purified water outlet 411, an RO membrane assembly 42, a purified water inlet 421,
A first check valve 51, a second check valve 52, a high-pressure switch 53,
A second control valve 6,
A waste water output end 7, a waste water control valve 71, a water outlet component 72,
A pure water output end 8, a water using component 81,
A clean water check valve 91 and a clean water check valve 92.
Detailed Description
In order to make the technical solution, objects and advantages of the present invention more clearly understood, the present invention is further explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 4, the reverse osmosis filtration system of the present invention comprises a raw water input end 1, a wastewater output end 7, a pure water output end 8, a three-way ball valve 11, a pre-filter element assembly 2, a first control valve 31, a booster pump 32, a reverse osmosis filter element assembly 4, a first check valve 51, a second check valve 52, and a wastewater control valve 71, wherein the reverse osmosis filter element assembly 4 is provided with a purified water inlet 401, a wastewater outlet 402, and a pure water outlet 403;
water flows along the raw water input end 1, the three-way ball valve 11, the preposed filter element assembly 2, the first control valve 31 and the booster pump 32 to the purified water inlet 401 to form a purified water inlet flow passage;
the water flows along the pure water outlet 403, the first check valve 51 to the pure water output end 8 to form a pure water outlet flow passage; the first check valve 51 unidirectionally guides the water flow from the pure water outlet 403 to the pure water output 8;
the water flows along the waste water outlet 402, the waste water control valve 71 to the waste water output end 7 to form a waste water outlet flow channel;
the water flows along the pure water outlet 403, the second check valve 52, the booster pump 32 and the pure water inlet 401 to form a pure water return flow channel; the second check valve 52 unidirectionally directs the water flow from the pure water outlet 403 to the booster pump 32.
A wastewater reverse-flow prevention structure for preventing wastewater reverse flow and a pure water reverse-flow prevention structure for preventing pure water reverse flow are arranged in the reverse osmosis filter element assembly 4; specifically, the reverse osmosis filter element assembly 4 comprises a central pipe 41 and an RO membrane assembly 42 arranged around the central pipe 41; the pure water inlet end 421 of the RO membrane assembly 42 is communicated with the pure water inlet 401, and the pure water outlet end 411 of the central tube 41 is communicated with the pure water outlet 403; the wastewater anti-reverse structure comprises a purified water one-way valve 91 arranged between the purified water inlet 401 and the purified water inlet end 421, and the purified water anti-reverse structure comprises a purified water one-way valve 92 arranged between the purified water outlet end 411 and the purified water outlet 403; the purified water check valve 91 unidirectionally guides water flow from the purified water inlet 401 to the purified water inlet end 421, and the purified water check valve 92 unidirectionally guides water flow from the purified water outlet end 411 to the purified water outlet 403.
Example 1:
as shown in fig. 1, the reverse osmosis filtration system is applied as a reverse osmosis filtration system without pressure switch control.
Wherein, the first check valve 51 is set as a non-pressure check valve, and the opening pressure of the second check valve 52 is set to be greater than 0 MPa.
The application principle is as follows:
under the normal water production state, an external tap water source is input from the raw water input end 1, the first control valve 31 is in an open state, and under the driving of the booster pump 32, primary filtration is carried out from the three-way ball valve 11 to the front filter element assembly 2 to obtain purified water; the obtained purified water passes through the first control valve 31 and the booster pump 32 to reach the position of the purified water inlet 401, and is input to the reverse osmosis filter element assembly 4 through the purified water inlet flow passage.
The input purified water is filtered by the reverse osmosis filter element component 4 to generate pure water and wastewater; based on the setting that the opening pressure of the second check valve 52 is larger than that of the first check valve 51, the outputted pure water is outputted to the pure water output end 8 along the pure water outlet flow passage through the first check valve 51 which is arranged without pressure, and the pure water output end 8 is connected with a water using component 81 such as a tap for leading out the pure water.
The waste water control valve 71 is in an open state, and a flow of waste water is output along the waste water outlet flow path to the waste water output 7, and the waste water output 7 is similarly connected with a corresponding water outlet assembly 72 for collection application of waste water extraction.
And after the water using module 81 is turned off, the reverse osmosis filtration system is put into a standby state where it is stopped. At this time, the first control valve 31 is closed, the booster pump 32 is continuously operated, the residual water in the reverse osmosis filter element assembly 4 is continuously treated into pure water and wastewater by the booster pump 32, the wastewater is continuously discharged through the wastewater outlet flow passage, and the pure water is continuously discharged through the pure water outlet 403. The second check valve 52 is pressurized by the introduced pure water to be opened, and the pure water is guided back to the opening position of the pure water by the second check valve 52 through the pure water return flow passage and the booster pump 32, and is re-introduced into the reverse osmosis filter element assembly 4. The residual water is effectively used for flushing the RO membrane module 42 in the reverse osmosis filtration module under the condition of continuous application, and the TDS concentration of the RO membrane module 42 is reduced.
After the residual water is flushed for a period of time, the booster pump 32 is shut down, the first control valve 31 is opened and started, the operation is carried out for 15 seconds, so that the pressure in the system is adjusted and balanced, and then the whole reverse osmosis filtration system stops working.
Based on the setting of the preparation state before the reverse osmosis filtration system stops working, the TDS concentration of a water source in the RO membrane assembly 42 in the working process is effectively reduced, and the problem that the TDS value of the first cup of water of a user is too high is effectively solved.
Example 2:
this embodiment differs from embodiment 1 described above in that in this embodiment, the second control valve 6 is provided between the pure water outlet 403 and the second check valve 52, and the second check valve 52 applied is provided as a non-pressure check valve. Meanwhile, a high-voltage switch 53 is arranged between the first check valve 51 and the pure water output end 8. The reverse osmosis filtration system will be used as a pressure switch controlled reverse osmosis filtration system.
Based on the same application principle, in a normal water making state, the second control valve 6 is in a closed state, and in the reverse osmosis filtration system, the obtained pure water is normally output to the pure water output end 8 along the pure water output flow channel; when the reverse osmosis filtration system enters a preparation state of stopping operation, the first control valve 31 is closed, the booster pump 32 continues to operate, the second control valve 6 is opened, and the residual water is re-input into the reverse osmosis filter element assembly 4 through a pure water return flow passage formed by the pure water outlet 403, the second control valve 6, the second check valve 52, the booster pump 32 and the pure water inlet 401, so as to flush the RO membrane assembly 42.
After the residual water is flushed for a period of time, the booster pump 32 and the second control valve 6 are stopped, the first control valve 31 is opened, the system works for 15 seconds, so that the pressure in the system is adjusted and balanced, and then the reverse osmosis filtration system stops working as a whole.
Correspondingly, after the system stops working, part of the pure water source still remains in the pure water return flow channel and the pure water outlet flow channel, and the remained pure water or the remained pure water flows back to the RO membrane module 42 along with the central tube 41 through the pure water outlet 403, so that the waste of the pure water is caused; the pure water check valve 92 is arranged, so that the stable flow direction of the pure water flow is ensured, the counter flow of the pure water is effectively prevented, and the pure water is saved.
On the other hand, after the system is stopped, the residual water having a higher TDS value in the RO membrane module 42 or the purified water is discharged in a counter-flow manner from the purified water inlet 421 of the RO membrane module 42. Accordingly, the water backflow can be effectively prevented by the arrangement of the purified water check valve 91, and the pollution of the purified water in the space between the purified water inlet 401 and the purified water inlet end 421 can be avoided.
The above is only the preferred embodiment of the present invention, and to the technical personnel in the technical field, without departing from the present invention, the embodiment can still be modified, and the corresponding modification should also be regarded as the protection scope of the present invention.

Claims (8)

1. A reverse osmosis filtration system comprises a raw water input end, a wastewater output end and a pure water output end, and is characterized by further comprising a first control valve, a booster pump, a reverse osmosis filter element assembly, a first one-way valve, a second one-way valve and a wastewater control valve, wherein the reverse osmosis filter element assembly is provided with a pure water inlet, a wastewater outlet and a pure water outlet; a wastewater reverse-flow prevention structure for preventing wastewater reverse flow and/or a pure water reverse-flow prevention structure for preventing pure water reverse flow are/is arranged in the reverse osmosis filter element assembly;
the water flow flows from the raw water input end, the first control valve and the booster pump to the purified water inlet to form a purified water inlet flow passage;
the water flows from the pure water outlet to the pure water output end along the first check valve to form a pure water outlet flow channel;
the water flows along the wastewater outlet, the wastewater control valve and the wastewater output end to form a wastewater outlet flow channel;
and water flows from the pure water outlet, the second one-way valve, the booster pump to the pure water inlet to form a pure water return flow channel.
2. The reverse osmosis filtration system of claim 1, wherein the pre-filter element assembly is positioned between the raw water input and the first control valve.
3. The reverse osmosis filtration system of claim 2, wherein a three-way ball valve is positioned between the raw water input and the pre-filter element assembly.
4. A reverse osmosis filtration system according to claim 1 wherein the first one-way valve is configured as a non-pressure one-way valve.
5. A reverse osmosis filtration system according to claim 1 wherein a high pressure switch is provided between the first one-way valve and the pure water output.
6. The reverse osmosis filtration system of claim 1, wherein the reverse osmosis cartridge assembly comprises a central tube and an RO membrane module disposed about the central tube; the pure water inlet end of the RO membrane component is communicated with the pure water inlet, and the pure water outlet end of the central tube is communicated with the pure water outlet; the wastewater anti-reverse structure comprises a purified water one-way valve arranged between the purified water inlet and the purified water inlet end, and/or the purified water anti-reverse structure comprises a purified water one-way valve arranged between the purified water outlet end and the purified water outlet.
7. A reverse osmosis filtration system according to any one of claims 1 to 6 wherein the second one-way valve has a cracking pressure greater than 0 MP.
8. A reverse osmosis filtration system according to any one of claims 1 to 6 wherein a second control valve is provided between the purified water outlet and the second one-way valve, the second one-way valve being provided as a non-pressure one-way valve.
CN202120720872.0U 2021-04-09 2021-04-09 Reverse osmosis filtration system Active CN215049158U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120720872.0U CN215049158U (en) 2021-04-09 2021-04-09 Reverse osmosis filtration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120720872.0U CN215049158U (en) 2021-04-09 2021-04-09 Reverse osmosis filtration system

Publications (1)

Publication Number Publication Date
CN215049158U true CN215049158U (en) 2021-12-07

Family

ID=79148362

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120720872.0U Active CN215049158U (en) 2021-04-09 2021-04-09 Reverse osmosis filtration system

Country Status (1)

Country Link
CN (1) CN215049158U (en)

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