CN218485639U - Variable-section operation reverse osmosis device - Google Patents

Abstract

The utility model relates to a variable section operation reverse osmosis device, which comprises a water inlet pipe, a reverse osmosis first section, a reverse osmosis second section, a fresh water main pipe and a concentrated water main pipe which are arranged in sequence, wherein the reverse osmosis first section and the reverse osmosis second section are respectively provided with a first valve for cutting off, a first branch pipe is used for communicating the water inlet pipe with the reverse osmosis second section to conveniently and independently isolate the reverse osmosis first section, and a second branch pipe is used for connecting the reverse osmosis first section with the concentrated water main pipe to conveniently and independently isolate the reverse osmosis second section; when the reverse osmosis first section or the reverse osmosis second section is subjected to membrane cleaning or replacement, the first valve, the second valve and the third valve are reasonably adjusted to be opened and closed and opened, so that the reverse osmosis first section or the reverse osmosis second section can respectively and independently operate without stopping operation at the same time, the free switching of reverse osmosis equipment from two-section operation to one-section operation is realized, and the problem that when membrane cleaning or replacement and other work are carried out in a reverse osmosis system at present, the whole reverse osmosis system needs to be stopped, and the continuous water production capacity of the equipment is restricted is effectively solved.

Description

Variable-section operation reverse osmosis device

Technical Field

The utility model belongs to the reverse osmosis filtration equipment field, in particular to variable section operation reverse osmosis unit.

Background

Reverse osmosis is a widely used water treatment desalination technology, and can be used not only for boiler make-up water, drinking water and preparing electronic ultrapure water, but also in the fields of wastewater treatment, seawater desalination and the like. At present, most of reverse osmosis is roll-type membrane elements, polyamide composite membranes, and various impurities and inorganic salt scales are inevitably accumulated on the surfaces of the membranes under the influence of concentration polarization along with the increase of operation time, so that the normal operation of a system is influenced. In conventional two segmentation reverse osmosis system, the reverse osmosis second grade is intake for one section exhaust dense water of reverse osmosis, therefore the salt content is higher, and two sections membrane scale deposit is fast, reaches the condition that the membrane washd or changed more easily, when carrying out the work such as membrane washing or change to reverse osmosis membrane, needs to shut down whole reverse osmosis system and handles polluting the membrane element, causes the restriction to the continuous system water ability of equipment.

A reverse osmosis membrane water treatment system is proposed in patent publication No. CN114314878A, which includes a water treatment module including a plurality of reverse osmosis membrane elements, and along a direction of concentrated water in the water treatment module, a plurality of the reverse osmosis membrane elements have a smaller inlet flow passage, a larger effective membrane area, a larger number of membrane sheets, a higher water production amount, a higher permeability, and a lower contamination resistance. However, the method only improves the system recovery rate through factors such as water flow and the area of the filter membrane, reduces the system pollution rate, improves the stability and continuity of the membrane system, prolongs the service life of the membrane element, and reduces the operation and maintenance cost of the membrane system, but the method can only stop operation when the membrane is cleaned or replaced, and cannot solve the problem that the continuous water production capacity of equipment is restricted when the reverse osmosis membrane is cleaned or replaced.

The patent with publication No. CN110590031B provides an ultrafiltration reverse osmosis water purification treatment system, which comprises a raw water tank provided with an ultraviolet lamp, a sand filter water inlet high-pressure pump, a sand filter, an active carbon filter water inlet high-pressure pump, an active carbon filter, a first reverse osmosis filter water inlet high-pressure pump, a first reverse osmosis filter and a pure water tank which are sequentially connected together, wherein the sand filter comprises a box body provided with a grid plate and a sand filter layer stacked on the grid plate, the box body is divided into a sand filter part water outlet cavity and a sand filter part water inlet cavity by the sand filter layer, the sand filter part water outlet cavity is provided with a sand filter part water outlet pipe orifice connected with the active carbon filter water inlet high-pressure pump, and the sand filter part water inlet cavity is provided with a sand filter part water inlet pipe orifice connected with the sand filter water inlet high-pressure pump. However, in the patent, the text and the attached drawings show that the reverse osmosis filtering section can only be operated by shutting down the equipment when the reverse osmosis filtering section needs to be cleaned or replaced, and the problem that the continuous water production capacity of the equipment is limited when the reverse osmosis membrane is cleaned or replaced, which is proposed in the application, cannot be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a variable section operation reverse osmosis unit is provided, solve and carry out the membrane in reverse osmosis system at present and wash or the during operation such as change, need shut down whole reverse osmosis system, lead to the fact the problem of restriction to the continuous system water ability of equipment.

In order to solve the problem, the utility model adopts the following technical scheme:

the utility model provides a variable section operation reverse osmosis unit, including the inlet tube that sets gradually, reverse osmosis is one section, the reverse osmosis two-stage process, female pipe in fresh water and the female pipe in concentrated water, reverse osmosis is one section and the reverse osmosis two-stage process all with the female pipe intercommunication in fresh water, reverse osmosis two-stage process and the female pipe intercommunication in concentrated water all are equipped with the first valve that is used for cutting off on reverse osmosis one section and the reverse osmosis two-stage process, be provided with the first branch pipe with reverse osmosis two-stage process intercommunication on the inlet tube, be equipped with the second valve on the first branch pipe, reverse osmosis is provided with the second branch pipe with the female pipe intercommunication in concentrated water on one section, be equipped with the third valve on the second branch pipe.

Furthermore, one section of reverse osmosis and the reverse osmosis two-section all include water inlet, fresh water export and dense water export, and inlet tube and the one section water inlet intercommunication of reverse osmosis, the one section dense water export of reverse osmosis and the two-section water inlet intercommunication of reverse osmosis, the one section fresh water export of reverse osmosis and the female pipe intercommunication of fresh water, the one section dense water export of reverse osmosis passes through the second branch pipe and the female pipe intercommunication of dense water, and the one section water inlet of reverse osmosis, fresh water export and dense water export all are equipped with first valve.

Furthermore, the reverse osmosis second-stage fresh water outlet is communicated with the fresh water mother pipe, the reverse osmosis second-stage concentrated water outlet is communicated with the concentrated water mother pipe, first valves are arranged on the reverse osmosis second-stage fresh water outlet and the concentrated water outlet, one end of the first branch pipe is communicated with the water inlet pipe, and the other end of the first branch pipe is communicated with the reverse osmosis second-stage water inlet.

Furthermore, a security filter is arranged on the water inlet pipe.

Furthermore, the water inlet of the cartridge filter, the fresh water main pipe and the concentrated water main pipe are all provided with flow meters.

Furthermore, the water inlet pipe, the reverse osmosis first-stage concentrated water outlet and the reverse osmosis second-stage concentrated water outlet are respectively provided with a pressure transmitter.

Furthermore, the water inlet of the cartridge filter and the fresh water main pipe are both provided with electric conductivity meters.

The utility model discloses what gain is showing beneficial effect:

1. the utility model relates to a variable section operation reverse osmosis device, which comprises a water inlet pipe, a reverse osmosis first section, a reverse osmosis second section, a fresh water main pipe and a concentrated water main pipe which are arranged in sequence, wherein first valves for cutting off are arranged on the reverse osmosis first section and the reverse osmosis second section, a first branch pipe is used for communicating the water inlet pipe with the reverse osmosis second section to facilitate membrane cleaning or replacement of the reverse osmosis first section, and a second branch pipe is used for communicating the reverse osmosis first section with the concentrated water main pipe to facilitate membrane cleaning or replacement of the reverse osmosis second section; when the reverse osmosis first section or the reverse osmosis second section is subjected to membrane cleaning or replacement, the first valve, the second valve and the third valve are reasonably allocated to be opened and closed, so that the reverse osmosis first section or the reverse osmosis second section can be independently operated respectively, and can continuously produce water without stopping operation at the same time, and the problem that the whole reverse osmosis system needs to be stopped when the reverse osmosis system is subjected to membrane cleaning or replacement and the like at present, and the continuous water production capacity of equipment is restricted is effectively solved.

2. The security filter arranged on the water inlet pipe before the first branch pipe is used for removing fine particles with the particle size of more than 5 micrometers so as to meet the requirement of subsequent processes on the quality of inlet water.

3. The flowmeter is arranged for adjusting the inflow rate of the water inlet pipe, the flow rate of the fresh water outlet and the flow rate of the concentrated water outlet, so that the proper recovery rate is obtained.

4. The pressure transmitter is arranged for monitoring the pressure of the water inlet pipe, the reverse osmosis first-stage concentrated water outlet and the reverse osmosis second-stage concentrated water outlet and the pressure difference between the reverse osmosis first-stage concentrated water outlet and the reverse osmosis second-stage concentrated water outlet, so that the working personnel can judge the water inlet pressure of the system and the pressure difference between the sections conveniently, and the problem of the equipment can be found in time.

5. The conductivity meter is used for calculating the desalination rate of water entering the cartridge filter and water filtered by the reverse osmosis first stage and the reverse osmosis second stage, so that the water quality is convenient to grasp.

Drawings

FIG. 1 is a schematic structural view of a variable-section operation reverse osmosis device in embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a reverse osmosis two-stage independent operation structure in a variable-stage operation reverse osmosis device according to embodiment 1 of the present invention;

FIG. 3 is a schematic structural view of a variable-section operation reverse osmosis device in embodiment 2 of the present invention;

fig. 4 is a schematic structural view of a variable section operation reverse osmosis device in embodiment 3 of the present invention.

In the attached drawing, 1-water inlet pipe, 2-reverse osmosis first section, 3-reverse osmosis second section, 4-fresh water main pipe, 5-concentrated water main pipe, 6-first valve, 7-first branch pipe, 8-second valve, 9-second branch pipe, 10-third valve, 11-cartridge filter, 12-flowmeter, 13-pressure transmitter and 14-conductivity meter.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Example 1

As shown in fig. 1 and fig. 2, a variable-section operation reverse osmosis device comprises a water inlet pipe 1, a reverse osmosis first section 2, a reverse osmosis second section 3, a fresh water mother pipe 4 and a concentrated water mother pipe 5 which are sequentially arranged, wherein the reverse osmosis first section 2 and the reverse osmosis second section 3 both comprise a water inlet, a fresh water outlet and a concentrated water outlet, the water inlet pipe 1 is communicated with the water inlet of the reverse osmosis first section 2, the fresh water outlet of the reverse osmosis first section 2 and the fresh water outlet of the reverse osmosis second section 3 are converged through the pipeline of the fresh water mother pipe 4 to facilitate fresh water collection, the concentrated water outlet of the reverse osmosis first section 2 is communicated with the water inlet of the reverse osmosis second section 3 through a pipeline, and the concentrated water outlet of the reverse osmosis second section 3 is communicated with the concentrated water mother pipe 5, wherein the water inlet of the reverse osmosis second section 3 and the concentrated water outlet of the reverse osmosis first section 2 are communicated to re-filter the filtered water to improve the recovery rate; in order to carry out independent membrane cleaning or change to reverse osmosis one section 2 and reverse osmosis two-stage process 3, the water inlet of reverse osmosis one section 2, all install first valve 6 on fresh water export and the dense water export, all install first valve 6 on the fresh water export of reverse osmosis two-stage process 3 and the dense water export, the intercommunication has first branch pipe 7 and reverse osmosis two-stage process 3 water inlet intercommunication on the inlet tube 1, be provided with the second valve 8 of breaking on first branch pipe 7, the dense water export intercommunication of reverse osmosis one section 2 has the second branch pipe 9 with the female pipe 5 intercommunication of dense water, install the third valve 10 of breaking on second branch pipe 9.

Wherein one section 2 of reverse osmosis includes N reverse osmosis membrane component, and reverse osmosis two-stage process 3 includes N/2 reverse osmosis membrane component, and for convenient understanding in this embodiment, one section 2 of reverse osmosis includes four reverse osmosis membrane component, and reverse osmosis two-stage process 3 includes two reverse osmosis membrane component, and the reverse osmosis membrane component is roll formula membrane element, and the material is polyamide complex film, sets up through reverse osmosis membrane component quantity in one section 2 of reverse osmosis and reverse osmosis two-stage process 3 and can make the system recovery rate be 75%, and the membrane module adopts 2:1, arrangement and combination mode, the recovery rate of each section is 50 percent, each membrane module is 6m long and is internally provided with 6 membrane elements with the length of 1 m; the system recovery rate that the aforesaid proposed is that this application is designed according to the quality of water condition of intaking of application place. The number through increasing reverse osmosis membrane element can increase the throughput of one section 2 of reverse osmosis and reverse osmosis second grade 3 to rivers, improves system water efficiency.

The first valve 6, the second valve 8 and the third valve 10 are all valves capable of cutting off water flow in the pipeline, and in this embodiment, the first valve 6, the second valve 8 and the third valve 10 are all cut-off valves.

The working principle is as follows: the initial state is that the reverse osmosis first section 2 and the reverse osmosis second section 3 normally run, the second valve 8 on the first branch pipe 7 and the third valve 10 on the second branch pipe 9 are in a closed state, and the first valve 6 is in a normally open state; when membrane cleaning or replacement is needed, taking the replacement of the reverse osmosis first section 2 as an example, when membrane cleaning or replacement needs to be carried out on the reverse osmosis first section 2 in an initial state, closing the first valves 6 at the water inlet, the fresh water outlet and the concentrated water outlet of the reverse osmosis first section 2, and opening the second valve 8 on the first branch pipe 7 to enable water flow in the water inlet pipe 1 to directly pass through the reverse osmosis second section 3 for filtration, wherein the water flow respectively enters the fresh water main pipe 4 and the concentrated water main pipe 5 after passing through the reverse osmosis second section 3, and at the moment, because the first valve is closed, no water flow passes through the reverse osmosis first section 2, membrane cleaning or replacement can be carried out without simultaneously stopping the reverse osmosis first section 2 and the reverse osmosis second section 3; when the membrane cleaning or replacement needs to be carried out on the second osmosis section in the initial state, the first valve 6 at the fresh water outlet and the concentrated water outlet on the reverse osmosis second section 3 is closed, the first valve 6 at the concentrated water outlet on the reverse osmosis first section 2 is closed, and the third valve 10 on the second branch pipe 9 is opened to enable the concentrated water in the reverse osmosis first section 2 to directly enter the concentrated water main pipe 5 through the concentrated water outlet, at the moment, no water flows pass through the reverse osmosis second section 3, the membrane cleaning or replacement can be carried out, and the reverse osmosis first section 2 and the reverse osmosis second section 3 do not need to be stopped at the same time.

In conclusion, this application is through the inlet tube 1 that sets gradually, reverse osmosis is one section 2, reverse osmosis two-stage process 3, install in female pipe 4 of fresh water and the female pipe 5 of dense water and can be redirected the rivers first valve 6 that flows, first branch pipe 7 and second branch pipe 9, make rivers in the inlet tube 1 can get into respectively that reverse osmosis filters in one section 2 and the reverse osmosis two-stage process 3 respectively, also can filter simultaneously through reverse osmosis one section 2 and reverse osmosis two-stage process 3, can carry out the operation that the membrane was washd or was changed respectively in reverse osmosis one section 2 or reverse osmosis two-stage process 3 under the condition of not stopping system water, effectively solved present when carrying out membrane washing or change in reverse osmosis system, need stop transporting whole reverse osmosis system, the problem that the continuous system water ability of equipment caused the restriction.

The arrows in the figure represent the direction of water flow.

Example 2

As shown in fig. 3, the structure of the present embodiment is substantially the same as that of embodiment 1, the present embodiment is further optimized based on embodiment 1, in order to prevent suspended particles which are not completely removed or are newly generated in the water inlet pipe 1 from entering the reverse osmosis system, and protect the reverse osmosis membranes in the reverse osmosis primary section 2 and the reverse osmosis secondary section 3, a security filter 11 is installed on the water inlet pipe 1 in front of the reverse osmosis primary section 2, and the security filter 11 is used for pre-filtering water entering the reverse osmosis primary section 2 or the reverse osmosis secondary section 3, so as to meet the requirement of the subsequent process on the quality of the inlet water.

Example 3

As shown in fig. 4, the structure of the present embodiment is substantially the same as that of embodiment 2, the present embodiment is further optimized based on embodiment 2, and since the reverse osmosis primary section 2 and the reverse osmosis secondary section 3 can be operated independently, the water flow pressure, the water flow speed and the water filtering effect in the pipeline can be changed, so that flow meters 12 are installed at the water inlet of the cartridge filter 11, the fresh water outlet and the concentrated water outlet of the reverse osmosis primary section 2, and the fresh water outlet and the concentrated water outlet of the reverse osmosis secondary section 3, and the flow meters 12 are installed to facilitate adjustment of the water inlet and the concentrated water flow, so as to obtain a proper recovery rate; pressure transmitters 13 are respectively arranged at the water inlet pipe 1, the reverse osmosis first-stage 2 concentrated water outlet and the reverse osmosis second-stage 3 concentrated water outlet, and the pressure in the water inlet pipe 1 and the pressure difference between the reverse osmosis first-stage 2 concentrated water and the reverse osmosis second-stage 3 concentrated water are monitored through the installation of the pressure transmitters 13; the water inlet of the security filter 11, the fresh water outlet of the reverse osmosis section 2 and the fresh water outlet of the reverse osmosis section 3 are provided with electric conductivity meters 14, the desalination rates of the water in the water inlet pipe 1 and the filtered water are collected through the installation of the electric conductivity meters 14, and the water quality comparison before and after the filtration and the judgment of the water quality are conveniently carried out.

At present, the technical scheme of the application has been subjected to a pilot plant test, namely a small-scale experiment before large-scale mass production of products; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; the preparation of products for formal production for industrialization (including intellectual property risk early warning research) has been started.

Claims (7)

1. A variable-section operation reverse osmosis device is characterized in that: including the female pipe (5) of inlet tube (1), one section (2) of reverse osmosis, reverse osmosis two-stage (3), fresh water that set gradually, one section (2) of reverse osmosis with reverse osmosis two-stage (3) all with the female pipe (4) intercommunication of fresh water, reverse osmosis two-stage (3) with the female pipe (5) intercommunication of concentrated water, one section (2) of reverse osmosis with all be equipped with first valve (6) that are used for cutting off on reverse osmosis two-stage (3), be provided with on inlet tube (1) with first branch pipe (7) of reverse osmosis two-stage (3) intercommunication, be equipped with second valve (8) on first branch pipe (7), be provided with on one section (2) of reverse osmosis with second branch pipe (9) of the female pipe (5) intercommunication of concentrated water, be equipped with third valve (10) on second branch pipe (9).

2. The variable-operation reverse osmosis apparatus of claim 1, wherein: the reverse osmosis first section (2) and the reverse osmosis second section (3) both comprise a water inlet, a fresh water outlet and a concentrated water outlet, the water inlet pipe (1) is communicated with the water inlet of the reverse osmosis first section (2), the reverse osmosis first section (2) of the concentrated water outlet is communicated with the water inlet of the reverse osmosis second section (3), the reverse osmosis first section of the fresh water outlet is communicated with the fresh water main pipe (4), the reverse osmosis first section (2) of the concentrated water outlet is communicated with the concentrated water main pipe (5) through the second branch pipe (9), and the reverse osmosis first section (2) of the water inlet, the fresh water outlet and the concentrated water outlet are all provided with the first valve (6).

3. The variable-section operation reverse osmosis device of claim 2, wherein: the utility model discloses a reverse osmosis two-stage process, including reverse osmosis two-stage process (3), fresh water outlet with female pipe in fresh water (4) intercommunication, reverse osmosis two-stage process (3) dense water export with female pipe in dense water (5) intercommunication, all be equipped with on reverse osmosis two-stage process (3) fresh water outlet and the dense water export first valve (6), first pillar (7) one end with inlet tube (1) intercommunication, first pillar (7) other end with reverse osmosis two-stage process (3) water inlet intercommunication.

4. A variable operation reverse osmosis apparatus according to claim 3, wherein: the water inlet pipe (1) is provided with a security filter (11).

5. The variable operation reverse osmosis apparatus of claim 4, wherein: the water inlet of the cartridge filter (11), the fresh water main pipe (4) and the concentrated water main pipe (5) are all provided with flow meters (12).

6. The variable operation reverse osmosis apparatus of claim 5, wherein: the water inlet pipe (1), the reverse osmosis one-section (2) concentrated water outlet and the reverse osmosis two-section (3) concentrated water outlet are provided with pressure transmitters (13).

7. The variable-operation reverse osmosis device of claim 6, wherein: the water inlet of the cartridge filter (11) and the fresh water main pipe (4) are provided with electric conductivity meters (14).

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