CN212309333U - Super-large-flow reverse osmosis water purifier without waste water - Google Patents
Super-large-flow reverse osmosis water purifier without waste water Download PDFInfo
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- CN212309333U CN212309333U CN202020497847.6U CN202020497847U CN212309333U CN 212309333 U CN212309333 U CN 212309333U CN 202020497847 U CN202020497847 U CN 202020497847U CN 212309333 U CN212309333 U CN 212309333U
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Abstract
The utility model relates to a wastewater-free ultra-large-flow reverse osmosis water purifier, which is characterized in that a water storage tank is divided into a non-pure water area (10) and a pure water area (14) by an isolating membrane (17), the pure water area (14) is communicated with a pure water tap (20) through a post-positioned filter element (19) and is communicated with a reverse osmosis pure water outlet (6) through a pressure switch (18); the non-pure water area (10) is communicated with a tap water inlet (1) and is provided with a conductivity/TDS detector which is communicated with a tap water faucet group (23), and a reverse osmosis concentrated water outlet (5) is communicated with a reverse osmosis water purification faucet (21). The utility model discloses use running water pressure work to put the pure water as leading, large-traffic reverse osmosis membrane puts the pure water as assisting, and the flow is far greater than current large-traffic reverse osmosis water purifier, and small-size water pocket formula retaining jar uses, and high-pressure pump starting frequency is far less than overhead tank reverse osmosis water purifier, has no waste water, super large flow, advantages such as small, simple structure, with low costs, reverse osmosis membrane long service life.
Description
Technical Field
The utility model belongs to the technical field of reverse osmosis water purifier, relate to reverse osmosis water purifier have or not waste water, flow size and whether can put the technical problem of pure water in succession, especially relate to reverse osmosis water purifier how use the technical problem that the retaining jar solved no waste water and how the technical problem that how the super large flow of running water power drive realized putting the pure water in succession.
Background
With the continuous improvement of living standard of people, more and more people begin to pay attention to drinking water sanitation, various water purifiers appear on the market, the current reverse osmosis water purifier is abnormally and rapidly developed in China, the proportion of the reverse osmosis water purifier in the whole water purifier is larger and larger, the proportion of the reverse osmosis water purifier in 2019 is more than 90%, and the reverse osmosis water purifier has a tendency of continuously increasing. Before 2020, the reverse osmosis water purifier has small flow, and most of the reverse osmosis water purifiers are matched with water storage tanks.
The RO reverse osmosis water purification device water storage tank before 2020 is an air bag type water storage tank, pure water enters the 14 compression air bags of the pure water area in the water making process, the water discharging process is carried out, the air volume expands to release potential energy to discharge the pure water in the pure water area 14, and a plurality of problems exist in the use process of the RO reverse osmosis water purification device water storage tank:
more than 75% of water in the water making process of the air bag type reverse osmosis water purifier is not used, and when waste water is discharged into a waste water ditch, waste of water is caused. The air of the air bag type water storage tank occupies more than 50% of the volume of the tank, and the volume utilization rate of the tank is low.
The air pressure of the air bag type water storage tank is gradually reduced in the pure water discharging process, and the flow of the pure water is reduced along with the reduction of the pressure. Compared with the reverse osmosis water purifier without the air bag type water storage tank, the flow rate is better or uneven, and the flow rate is reduced more quickly.
The air bag type water storage tank is provided with an air valve, air with certain pressure must be pumped into the air bag type water storage tank before leaving a factory, if the air is not pumped into the water storage tank, the air exists in the water storage chamber, and the air bag type water storage tank cannot be used. The pumping pressure does not meet the requirement, and the flow and the water yield are also influenced.
The air bag type water storage tank begins to discharge water, 30% of water is discharged, in order to keep higher flow, the high-pressure pump 3 of the water purifier is started, more than 70% of water is always stored in the tank, an inlet and an outlet of the water storage tank are positioned at the highest point of the barrel, more dead water exists, and bacteria are easy to breed.
The air bag type pressure tank is large in size, poor in pressure resistance and high in air pressure energy storage amount, once a high-voltage switch breaks down, the blasting destructiveness is very large, and the air bag type water storage tank is often reported as an explosion event. The air bag type water storage tank has frequent start, more faults, high damage rate and short service life of only two years.
The air bag type water storage tank high-pressure pump 3 not only needs to overcome the resistance of the reverse osmosis membrane 4 to do work in the water making process, but also needs to overcome the air pressure of the water storage tank to do work, and the air potential energy in the water storage tank is stored in the process. As the pressure in the water storage tank is gradually increased, the actual power of the high-pressure pump 3 is also gradually increased, and the rated power of the high-pressure pump 3 is required to be larger than the maximum actual power, so that the rated power of the high-pressure pump 3 is far larger than the average power.
The market trend develops to a large-flow reverse osmosis membrane 4, a double reverse osmosis membrane 4 and a water-free tank in the year 2020. The use of the high-flow reverse osmosis membrane 4 reduces the volume, can continuously discharge pure water, and the air bag type pressure tank is gradually eliminated. But reverse osmosis membrane 4 flow that is bigger again also can't compare with running water flow, the pure water just can't be put in the power failure to reverse osmosis membrane 4 flow has been big and has brought new problems, product cost has improved, the pure water is put simultaneously in system water, the TDS value of the pure water is very high within two minutes in the initial system water of reverse osmosis membrane 4, the pure water quality has reduced, the pure water is put simultaneously in system water, the start frequency is too high and has higher requirement to the booster pump quality, the rational use problem of dense water can not be solved to no retaining jar again, the waste of water still exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wastewater-free ultra-large flow reverse osmosis water purifier, the water circulation system of which is different from the prior water purifier in principle, a water inlet electromagnetic valve is not needed in a water path, high-pressure pump 3 is used for electric power work production for water production, and tap water is used for pure water, purified water and concentrated water work production; the tap water pressure is mainly used for applying work to discharge pure water, the high-flow reverse osmosis membrane is used for discharging pure water as an auxiliary, and the flow is far larger than that of the existing high-flow reverse osmosis water purifier; the starting frequency of the water bag type water storage tank using the high-pressure pump is lower than that of the original pressure tank water purifier, and no wastewater is discharged; the conductivity/TDS detector 26 is used for detecting the conductivity/TDS value of the concentrated water, so that the quality of the purified water is improved, and the purified water preparation rate is improved; the water discharge has the function of washing the reverse osmosis membrane 4, so that the reverse osmosis membrane 4 is protected, and the service life is prolonged.
In order to realize the utility model discloses an aim at, propose following technical scheme:
a wastewater-free ultra-large-flow reverse osmosis water purifier comprises a tap water inlet 1, a front filter element group 2, a high-pressure pump 3, a reverse osmosis membrane 4, a water bag type water storage tank 24, a pressure switch 18, a rear filter element 19, a pure water faucet 20, a conductivity/TDS detector, a wastewater electromagnetic valve/wastewater ratio valve 22 and a tap water faucet group 23; the water bag type water storage tank 24 is divided into two parts by using an isolation film 17, wherein one part is a non-pure water area 10 provided with an exhaust valve 9, and the other part is a pure water area 14; a pure water inlet and outlet 15 of the pure water area 14 is communicated with a pure water tap 20 through a post-positioned filter element 19 and is communicated with a reverse osmosis pure water outlet 6 of a reverse osmosis membrane 4 through a pressure switch 18; the non-pure water inlet and outlet pipe 7 of the non-pure water area 10 is communicated with the tap water inlet 1; and a concentrated water inlet and outlet 11 of the non-pure water area 10 is communicated with a tap water faucet group 23 and is communicated with a reverse osmosis concentrated water outlet 5 of a reverse osmosis membrane 4 through a wastewater electromagnetic valve/wastewater ratio valve 22.
The non-pure water inlet and outlet pipe 7 of the non-pure water area 10 is arranged at the top of the water storage tank and extends into the water storage tank for a certain length, the pipe orifice of the non-pure water inlet and outlet pipe 7 is required to be smooth, when pure water is full in the water making process, the pipe orifice can be sealed on the isolation film 17, water making is stopped, pure water is increased to a certain amount, a small amount of residual non-pure water is not discharged from the non-pure water area, and the starting frequency of the high-pressure pump is reduced.
Concentrated water inlet and outlet 11 is established at the lower position in non-pure water area 10, and conductivity/TDS detector probe 13 is equipped with to the inner wall lower position in non-pure water area 10, and the conductivity/TDS value from the top down of water gradually rises in non-pure water area 10, and the conductivity/TDS detector is adorned outside the jar, according to the conductivity/TDS data control conductance switch break-make that the probe provided. The conductivity/TDS detector probe 13 is mounted at a lower level of the concentrate inlet/outlet 11. No matter water is produced, pure water is discharged, tap water is discharged, the highest value of the conductivity/TDS of water in the tank can be timely and accurately detected, and the on-off of the conductivity switch is controlled.
The water bag type water storage tank 24 is an ellipsoid, a cylinder with two hemispherical ends or other shapes capable of bearing internal pressure, and the tank body is made of non-toxic and harmless waterproof plastic or stainless steel capable of bearing certain pressure; the tank body is integrally formed in one step or formed by the permanent connection of welding, gluing and riveting or the detachable combination of screw connection.
The shape of the isolating membrane 17 is capsule type, folding type or other forms which can change the volumes of the two parts in the water storage tank and ensure that the two parts are not communicated with each other, the maximum position of the isolating membrane 17 moving towards the pure water area 14 can reach the lowest end in the water storage tank, and the maximum position of the isolating membrane moving towards the non-pure water area 10 can seal the pipe orifice of the non-pure water inlet and outlet pipe 7. The moving process of the isolating membrane 17 requires no tension in the whole process, the two sides are isolated by water, and the pressure is equal.
The series circuit of the high-pressure pump switch controlled by the pressure switch 18 and the conductance switch controlled by the conductivity/TDS detector is a power switch of the high-pressure pump 3, and the high-pressure pump is not started as long as one of the high-pressure pump switch and the conductance switch is not conducted.
The pressure switch 18 is a high pressure switch or other pressure sensor that meets the requirements of the hydraulic control high pressure pump switch of the present patent as shown in fig. 2. The pressure names of the reverse osmosis pure water outlet 6 of the reverse osmosis membrane 4 measured by the pressure switch 18 are explained as follows:
the pressure when the pure water tap 20 is opened to normally discharge pure water is the water discharge pressure P2(ii) a The pure water tap 20 is opened, and the pressure is atmospheric pressure P when the pure water is discharged0(ii) a Setting the starting pressure P1Less than the water discharge pressure P2Above atmospheric pressure P0When the high-pressure pump switch is in an off state, the water purifier discharges pure water, and when the pressure drops to the starting pressure P1At this time, the pressure switch 18 controls the high-pressure pump switch to be turned on.
The normal pressure of the water making process is equal to the tap water pressure to the water making pressure P3Or pressure P of tap water3(ii) a Full of water and non-pure waterThe pressure when the non-pure water inlet and outlet pipe 7 is sealed is the pipe opening sealed pressure P5(ii) a Setting the closing pressure P4Greater than the water production pressure P3Pressure P less than the pressure of the sealed pipe mouth5When the pressure rises to the closing pressure P in the water production process of the water purifier4At this time, the pressure switch 18 controls the high-pressure pump switch to be turned off.
The relationship between the pressure intensities is as follows: p0<P1<P2<P3<P4<P5。
The name of each conductivity/TDS value measured by the conductivity/TDS detector indicates that:
the conductivity/TDS detector controls the on-off of the conductivity switch according to the data provided by the conductivity/TDS detector probe 13; conductivity/TDS detector set on value G2When the conductivity/TDS detector probe 13 detects a decrease in conductivity/TDS to G2The conductivity/TDS detector controls the conduction of the conductivity switch; the conductivity/TDS detector is set to a turn-off value of G3When the conductivity/TDS detector probe 13 detects an increase in conductivity/TDS value to G3The conductivity/TDS detector controls the conductivity switch to turn off.
Magnitude relationship of each conductivity/TDS value: g2<G3。
G2And G3The smaller the difference, the higher the starting frequency of the high-pressure pump, and the larger the difference, the lower the starting frequency of the high-pressure pump, but G3Too high is detrimental to reverse osmosis membranes.
The reverse osmosis water purifier of this patent does not need to put into water solenoid valve, no matter whether high-pressure pump 3 starts or not, opens reverse osmosis water purification tap 21 and can both put the water to reverse osmosis membrane 4's dense water export 5 and reverse osmosis water purification tap 21 intercommunication has the function of washing reverse osmosis membrane 4, has prolonged reverse osmosis membrane 4's life-span.
The utility model discloses use running water pressure work to put the pure water as leading, large-traffic reverse osmosis membrane puts the pure water as assisting, can put the pure water in succession, the flow is far greater than current large-traffic reverse osmosis water purifier, and small-size water pocket formula retaining jar uses, and high-pressure pump starting frequency is far less than overhead tank reverse osmosis water purifier, has no waste water, super large flow, advantages such as small, simple structure, with low costs, reverse osmosis membrane long service life.
Drawings
FIG. 1 is a schematic view of the super-large-flow reverse osmosis water purifier without waste water;
FIG. 2 shows the pressure variation law of the whole process of the wastewater-free ultra-large flow reverse osmosis water purifier;
fig. 3 is a three circulation flow chart of the wastewater-free ultra-large-flow reverse osmosis water purifier.
Wherein:
the system comprises a tap water inlet 1, a pre-filter element group 2, a high-pressure pump 3, a reverse osmosis membrane 4, a reverse osmosis concentrated water outlet 5, a reverse osmosis pure water outlet 6, a non-pure water inlet and outlet pipe 7, a non-pure water ball valve 8, an exhaust valve 9, a non-pure water area 10, a concentrated water inlet and outlet 11, a concentrated water ball valve 12, a conductivity/TDS detector probe 13, a pure water area 14, a pure water inlet and outlet 15, a pure water ball valve 16, an isolation membrane 17, a pressure switch 18, a post-filter element 19, a pure water faucet 20, a reverse osmosis pure water faucet 21, a wastewater electromagnetic valve/wastewater ratio valve 22, a tap water faucet group 23 and a water.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, the whole process of the wastewater-free ultra-large flow reverse osmosis water purifier of the utility model is as follows:
preparation work: the super-large-flow reverse osmosis water purifier without waste water is connected, the water purifier is shut down, a pure water faucet 20 is opened, a pure water ball valve 16 is opened, an exhaust valve 9 is closed, an impure water ball valve 8 is opened, tap water enters an impure water area 10 of a water storage tank, the space of a pure water area 14 is compressed to zero, water and air are completely discharged from the pure water faucet 20, and the pure water faucet 20 is closed; opening the exhaust valve 9, and immediately closing the exhaust valve 9 until the exhaust valve 9 discharges water; at this time, the non-pure water area 10 occupies the whole space of the water storage tank and is filled with tap water. When the water purifier is electrified, the pressure measured by the pressure switch 18 is the tap water pressure P3The high-pressure pump 3 is not started and is openedThe pressure measured by the tap 20 is atmospheric pressure P0Less than P1The high-pressure pump 3 is started and the pure water tap 20 is closed.
Water is not discharged during water production: the conductance switch and the high-pressure pump switch are both switched on, the high-pressure pump 3 works, and the first shutdown is possible: the pure water in the pure water area 14 is continuously increased, the isolating membrane 17 is continuously increased along with the water making process, when the isolating membrane 17 seals the mouth of the non-pure water inlet and outlet pipe 7, the pressure measured by the pressure switch 18 is the sealed pressure P of the pipe mouth5Closing pressure P4Less than P5The high-pressure pump switch is turned off, and the high-pressure pump 3 stops working. The second shutdown may be: the conductivity/TDS of the water in the non-pure water area 10 is continuously increased in the water production process, and when the conductivity/TDS value detected by the conductivity/TDS detector probe 13 is higher than G3The conductance switch is turned off and the high pressure pump 3 stops working.
And (3) adding pure water while making water: the conductance switch and the high-pressure pump switch are all switched on, the high-pressure pump 3 works, the water making is less than the pure water discharge flow, 14 pure water in the pure water area is continuously reduced, tap water continuously enters the non-pure water area 10, the conductivity/TDS detected by the conductivity/TDS detector probe 13 is continuously reduced, when the pure water in the pure water area 14 is discharged, the water flowing out of the pure water faucet 20 is converted into the pure water flowing out of the reverse osmosis pure water outlet 6 at the moment, if the reverse osmosis membrane 4 is a large-flow reverse osmosis membrane 4 larger than 400G, the flow is only less than one third of the tap water flow, but the requirement of a user can be met just, and if the pure water faucet 20 is turned off at the.
And (3) adding tap water while producing water: the conductance switch and the high-pressure pump switch are both switched on, the high-pressure pump 3 works, 14 pure water in a pure water area is continuously increased, the reverse osmosis concentrated water outlet 5 is smaller than the discharge flow of tap water, the conductivity/TDS detected by the conductivity/TDS detector probe 13 is gradually reduced, the isolation membrane 17 is continuously increased along with the water production process, when the isolation membrane 17 seals the mouth of the non-pure water inlet and outlet pipe 7, the pressure detected by the pressure switch 18 is the sealed pressure P of the mouth of the pipe5Closing pressure P4Less than P5The high-pressure pump switch is turned off, and the high-pressure pump 3 stops working.
Discharging pure water without making water: the high-pressure pump 3 is not operated, and the conductance switch and the high-pressure pump switch are at least provided withOne is off. There are three possibilities to start water production, the first one is that the conductance switch is turned off: the pure water area 14 continuously reduces the pure water, the tap water continuously enters the non-pure water area 10, the conductivity/TDS detected by the conductivity/TDS detector probe 13 continuously reduces, and when the conductivity/TDS value is lower than G2And the conductance switch is switched on to start water production. The second high-pressure pump switch is off: the pure water in the pure water area 14 is continuously reduced, and when the pure water in the pure water area 14 is completely discharged, the pressure measured by the pressure switch 18 is the atmospheric pressure P0，P0Less than P1When the high-pressure pump 3 is started, the water flowing out of the pure water faucet 20 is converted into the pure water flowing out of the reverse osmosis pure water outlet 6, if the reverse osmosis membrane 4 is a large-flow reverse osmosis membrane 4 larger than 400G, the flow is only less than one third of the tap water flow, but the requirement of a user can be met marginally, and if the pure water faucet 20 is closed for a few minutes, the pure water faucet 20 is opened, and the ultrahigh-flow pure water is recovered. The third conductance switch and the high-pressure pump switch are both off: the conductivity/TDS of the non-pure water area 10 is continuously reduced, the conductivity switch is firstly conducted, pure water in the pure water area 14 is discharged, the high-pressure pump is conducted after the high-pressure pump is switched on, and the high-pressure pump 3 is started to convert the pure water into the large-flow reverse osmosis membrane 4 to discharge the pure water.
No water is produced and tap water is discharged: the high-pressure pump 3 is out of work, and conductance switch and high-pressure pump switch have at least one to turn off, and 14 pure water in the pure water region is unchangeable, and the running water constantly gets into non-pure water region 10, and conductivity/TDS detector probe 13 surveys conductivity/TDS and constantly reduces, has two kinds of probably, and first only conductance switch turns off: when the conductivity/TDS pure water is lower than G2And the conductance switch is switched on to start water production. The second high-pressure pump 3 switch is off only or both: the pressure intensity can not be changed when tap water is discharged, and the state of no water production is maintained.
Data analysis of three continuous cycles of the wastewater-free super-large-flow water purifier:
the filtering of water in the waste water-free super-large flow reverse osmosis water purifier is a continuous circulation process, and the specific effect can be explained by theoretical data. Is provided withaIs a pure water unit and is used as a pure water unit,bis a macroscopic large-particle pollutant unit, and C is a microscopic large-particle pollutant unit. The preposed filter element filters macroscopic large-particle pollutants, and the reverse osmosis membrane 4 filters microscopic large-particle pollutantsThe ratio of pure water output by the reverse osmosis membrane 4 to concentrated water is two, and the data of three circulation processes are shown in fig. 3.
The initial state of the tap water input into the water storage tank is 3a+3b+3c, filtering with a preposed filter element to obtain 3 purified watera+3c, through reverse osmosis membrane 4 filtration deposit two areas of retaining jar, the water circulation of each circulation non-pure water area 10 is a week, decomposes into one-third pure water, two-thirds concentration water. The three cycles are completed and the pure water in the pure water area 14 is 2.11a70% of the water storage tank volume, and the concentration water in the non-pure water area 10 is 0.89%a+3c, the water concentration is already 3.3 times that of tap water, indicating that without pure and tap water the number of water cycles in the purifier cannot be too high and that it is necessary to monitor the water concentration in the impure water zone 10 with a conductivity/TDS detector when the conductivity/TDS value exceeds G3The high pressure pump is shut down. Pure water or tap water is added in the water making process, the concentration of water in the non-pure water area 10 is reduced, water can be made continuously, and the pure water accounts for more than 70% of the volume of the water storage tank.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A super-large-flow reverse osmosis water purifier without waste water is characterized by comprising a tap water inlet (1), a preposed filter element group (2), a high-pressure pump (3), a reverse osmosis membrane (4), a water bag type water storage tank (24), a pressure switch (18), a postposition filter element (19), a pure water faucet (20), a waste water electromagnetic valve/waste water ratio valve (22) and a tap water faucet group (23); the water bag type water storage tank (24) uses an isolation film (17) to divide the interior of the water bag type water storage tank (24) into two parts, one part is a non-pure water area (10), and the other part is a pure water area (14); a pure water inlet and outlet (15) of the pure water area (14) is communicated with a pure water tap (20) through a post-positioned filter element (19) and is communicated with a reverse osmosis pure water outlet (6) of a reverse osmosis membrane (4) through a pressure switch (18); the non-pure water inlet and outlet pipe (7) of the non-pure water area (10) is communicated with the tap water inlet (1); a concentrated water inlet and outlet (11) of the non-pure water area (10) is communicated with a tap water faucet group (23) and is communicated with a reverse osmosis concentrated water outlet (5) of a reverse osmosis membrane (4) through a wastewater electromagnetic valve/wastewater ratio valve (22); the non-pure water inlet and outlet pipe (7) of the non-pure water area (10) of the water bag type water storage tank (24) is arranged at the top of the non-pure water area (10) and extends into the tank for a certain length, the maximum position of the isolation film (17) moving towards the pure water area (14) can reach the lowest end inside the water storage tank, and the maximum position of the isolation film moving towards the non-pure water area (10) can seal the pipe orifice of the non-pure water inlet and outlet pipe (7).
2. A reverse osmosis water purifier according to claim 1, wherein the pressure switch (18) monitors the pressure at the reverse osmosis pure water outlet (6) of the reverse osmosis membrane (4) when the pressure drops to a starting pressure P1When the pressure switch (18) is used for controlling the high-pressure pump switch to be conducted, the pressure switch (18) is provided with starting pressure P1Less than the water discharge pressure P2Above atmospheric pressure P0(ii) a When the pressure rises to the closing pressure P4When the pressure switch (18) is used, the high-pressure pump switch is controlled to be turned off, and the pressure switch (18) is set to turn off the pressure P4Greater than the water production pressure P3Pressure P less than the pressure of the sealed pipe mouth5。
3. A reverse osmosis water purifier as claimed in claim 2, wherein the bladder type reservoir (24) is provided with a conductivity/TDS detector probe (13) at a lower position of an inner wall of the non-pure water region (10) or in a port of the concentrate inlet/outlet (11), and the conductivity/TDS detector controls the on/off of the conductivity switch according to data provided by the conductivity/TDS detector probe (13).
4. The method of claim 3The reverse osmosis water purifier is characterized in that the conductivity/TDS detector is set to have a conduction value of G2When the conductivity/TDS detector probe (13) detects a conductivity/TDS decrease of G2When the switch is in use, the conductivity/TDS detector controls the conduction of the conductivity switch; the conductivity/TDS detector is set to a turn-off value of G3When the conductivity/TDS detector probe (13) detects an increase in conductivity/TDS value to G3The conductivity/TDS detector controls the conductivity switch to turn off.
5. A reverse osmosis water purifier according to claim 4, wherein the series circuit of the high pressure pump switch controlled by the pressure switch (18) and the conductance switch controlled by the conductivity/TDS detector is a power switch of the high pressure pump (3).
6. A reverse osmosis water purifier according to claim 1, wherein the reverse osmosis concentrated water outlet (5) of the reverse osmosis membrane (4) is communicated with a reverse osmosis purified water tap (21).
7. A reverse osmosis water purifier according to claim 1, wherein the water bag type water storage tank (24) is provided with an exhaust valve (9), and the exhaust valve (9) is installed at the top of the non-pure water area (10).
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