CN111036081A

CN111036081A - Reverse osmosis water purifier with water bag type double-isolation water storage tank

Info

Publication number: CN111036081A
Application number: CN202010132078.4A
Authority: CN
Inventors: 曹伟达
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-04-21

Abstract

The invention relates to a reverse osmosis water purifier with a water bag type double-isolation water storage tank, wherein the water storage tank is divided into a non-pure water area (26) by a double-isolation body (22), and the two pure water areas are respectively connected with two pure water taps and are respectively communicated with a pure water outlet (11) of a reverse osmosis membrane through a check valve and a high-pressure switch (19); a tap water inlet and outlet (24) of the non-pure water area (26) is connected with a tap water inlet (5), and a concentrated water inlet and outlet (28) of the non-pure water area (26) is communicated with an original tap water faucet group (34) through a conductivity (or TDS) detector (3); the conductivity (or TDS) detector (3) is communicated with the purified water faucet (13) through a waste water electromagnetic valve (33). The invention uses tap water pressure to do work and discharge pure water, purified water and concentrated water at constant high flow; the water purifier has large flow, small volume and no waste water, the concentration of water in the water storage tank is diluted when concentrated water is discharged, and the reverse osmosis membrane (10) is washed when purified water is discharged, so that the service life of the water purifier is prolonged.

Description

Reverse osmosis water purifier with water bag type double-isolation water storage tank

Technical Field

The invention belongs to the technical field of water purifiers, and particularly relates to a reverse osmosis water purifier with a water bag type double-isolation water storage tank, which is essentially different from the existing reverse osmosis water purifier in working and water circulation, so that concentrated water is reasonably used, and discharged water has the function of flushing a reverse osmosis membrane 10.

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. Because the reverse osmosis water purifier has small flow, most of the reverse osmosis water purifiers are matched with water storage tanks.

The RO reverse osmosis water purifier system comprises four parts, namely tap water, a water purifier, a water storage tank and a water tap, wherein except for a water pipe connected with the water storage tank, the water pipe is a bidirectional circulating pipe, and the other parts are all unidirectional circulating pipes. FIG. 6 shows a prior art air bag type water storage tank water purifier system, wherein the prior art water storage tank is an air bag type water storage tank, and pure water enters a pure water area to compress gas in an air bag during water preparation; and in the water discharging process, the volume of the air expands to release potential energy so as to discharge the pure water in the pure water area. There are a number of problems with their use:

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 process of discharging the pure water (as shown in figure 10), and the flow rate of the pure water is reduced. The flow rate of the reverse osmosis water purifier is better than that of the reverse osmosis water purifier without the air bag type water storage tank, the flow rate is not uniform, and the flow rate is reduced quickly (as shown in figure 9).

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 9 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 the high-voltage switch 19 breaks down, the blasting destructiveness is extremely high, and the air bag type water storage tank blasting event is frequently reported. The air bag type water storage tank has frequent start, more faults, high damage rate and short service life (only two years).

In the process of making water by the air bag type water storage tank high-pressure pump 9, not only the resistance of the reverse osmosis membrane 10 is overcome to do work, but also the air pressure of the water storage tank is overcome to do work, and the air potential energy in the water storage tank is stored in the process. As the pressure in the reservoir increases gradually (fig. 10), the actual power of the high-pressure pump 9 also increases gradually, requiring the rated power of the high-pressure pump 9 to be greater than the maximum actual power, so that the rated power of the high-pressure pump 9 is much greater than the average power.

The market trend develops to a large-flow reverse osmosis membrane 10, a double reverse osmosis membrane 10 and a water storage tank-free tank. However, the larger flow of the reverse osmosis membrane 10 cannot be compared with the flow of tap water, and the larger flow can increase the product cost and reduce the purity of pure water; the machine is started to simultaneously produce water, the TDS value of pure water produced by the reverse osmosis membrane 10 within two minutes is very high, the quality of the pure water drunk by the machine with too high starting frequency is problematic, the reasonable use problem of concentrated water cannot be solved by a water storage tank, and the waste of water still exists.

Disclosure of Invention

The invention aims to provide a reverse osmosis water purifier (figures 1-3) with a water bag type double-isolation water storage tank, a water circulation system of the reverse osmosis water purifier is different from the principle of the existing air bag type water storage tank water purifier, water production uses electric power of a high-pressure pump 9 to do work, a conductivity (or TDS) detector 3 is used for detecting the conductivity (or TDS) value of concentrated water, the pure water production rate is improved, a reverse osmosis membrane 10 is protected, and the service life is prolonged; pure water, pure water and concentrated water are put into the device to do work by using the power of tap water, and the water yield is close to 100 percent; the flow of the outlet water is basically the same as that of the tap water; the drain water has a function of washing the reverse osmosis membrane 10.

In order to realize the purpose of the invention, the following technical scheme is proposed:

a reverse osmosis water purifier with a water bag type double-isolation water storage tank takes the principle that a high-pressure pump 9 does work electrically to drive water circulation to produce water and tap water pressure does work to drive water to discharge water at constant flow as well as comprises the reverse osmosis water purifier, the water bag type double-isolation water storage tank 4, a pure water tap A16, a pure water tap B31, a water purification tap 13 and an original tap water group 34. The water bag type double-isolation water storage tank 4 has various forms, only one tank (figure 1), two tanks (figure 2) and three tanks (figure 3) are provided, the volume of the one tank is large, the two tanks and the three tanks can be horizontally placed in consideration of symmetry, the two tanks and each tank of the three tanks are small in volume and can be vertically placed, the three tanks are not provided with the water permeable rigid plates 23, the water storage tanks in the three forms have the same functions, and the water bag type double-isolation water storage tank is designed only due to structural diversity. The water bag type double-isolation water storage tank 4 is divided into three areas by two isolation bodies 22 when viewed as a whole, the middle area is a non-pure water area 26, and the other two areas are pure water areas; a pure water inlet and outlet A21 of the pure water area A20 is communicated with a pure water tap A16 through a post-positioned filter element A17 and is communicated with a reverse osmosis membrane pure water outlet 11 of the water purifier through a check valve A18 and a high-pressure switch 19; a pure water inlet and outlet B29 of the pure water area B27 is communicated with a pure water tap B31 through a rear filter element B32 and is communicated with a reverse osmosis membrane pure water outlet 11 of the water purifier through a check valve B30 and a high-pressure switch 19; a tap water inlet and outlet 24 and an exhaust valve 25 are installed at the top of the non-pure water area 26, and the tap water inlet and outlet 24 of the non-pure water area 26 is communicated with the tap water inlet 5; the bottom of the non-pure water area 26 is provided with a concentrated water inlet and outlet 28, and the concentrated water inlet and outlet 28 is communicated with an original tap water faucet group 34 through a conductivity (or TDS) detector 3 and is communicated with a reverse osmosis membrane concentrated water outlet 12 through the conductivity (or TDS) detector 3 and a wastewater electromagnetic valve 33.

Two water permeable rigid plates 23 made of non-toxic and harmless plastics or stainless steel are arranged in the water bag type double-isolation water storage tank 4 in the tank form and the two tank forms, the shapes of the water permeable rigid plates 23 are the same as the curved surface of the water storage tank shell on the symmetrical surface of the isolation body 22, the water permeable rigid plates 23 are provided with water permeable holes, are symmetrically fixed at the maximum displacement position of the isolation body 22 and are connected with the inner wall of the tank body into a whole.

The water bag type double-isolation water storage tank 4 is provided with an exhaust valve 25, and the exhaust valve 25 is installed at the top of a non-pure water area 26 and is communicated with the non-pure water area 26.

The shape of the water bag type double-isolation water storage tank 4 is an ellipsoid shape, a cylinder shape or a cylinder with two hemispherical ends, and the tank body is made of non-toxic and harmless waterproof plastic or stainless steel which can bear 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 isolation body 22 is made of rubber, plastic or other water-tight food safety grade materials; the shape of the water storage tank is capsule type, folding type, movable type or other forms which can change the volume of each part in the water storage tank and ensure that the parts are not communicated with each other.

A switch circuit is arranged between the high-pressure pump 9 and a power supply and is composed of a high-voltage switch 19 and a conductivity (or TDS) switch 2 in series, and the conductivity (or TDS) switch 2 is controlled by a conductivity (or TDS) detector 3.

The mode of the high-voltage switch 19 for controlling the high-voltage pump 9 to work is as follows (fig. 7):

the high-pressure pump 9 sets the starting pressure p₁Pressure p less than that of discharging pure water₂Greater than atmospheric pressure p₀(ii) a Closing pressure p₄Greater than the tap water pressure p₃Pressure p less than the blockage pressure p of pure water outlet 11 of reverse osmosis membrane₅(ii) a When the conductivity (or TDS) switch 2 is in the conducting state and water is exhausted from a pure water area, the high-voltage switch 19 measures that the pressure is atmospheric pressure p₀When the high-voltage switch 19 is closed, the high-voltage pump 9 is started; the user finishes the water supply of one pure water faucet and then puts the second faucet for alternative water supply, thereby reducing the starting times and the water supply stopping conditions. When pure water in the pure water area A20 and the pure water area B27 occupy the maximum space during water production, the pressure measured by the high-pressure switch 19 is the blocked pressure p of the pure water outlet 11 of the reverse osmosis membrane₅The high-pressure switch 19 is turned off and the high-pressure pump 9 is stopped.

In fig. 9 and fig. 10, the water production and the water discharge of the air bag type reverse osmosis water purifier are the same curve, and the flow and the pressure change are gradually changed and are independent of the pressure of tap water. The water production and the water discharge of the water bag type reverse osmosis water purifier are two different horizontal straight lines, the flow and the pressure change are sudden changes, the pressure horizontal straight line is related to the tap water pressure and the damping of the post-filter element, and if the pressure difference is smaller, a damper is required to be connected in series with the post-filter element. The particularity of the water bag type reverse osmosis water purifier is solved by a special method, and the double-isolation water storage tank is one of the methods for solving the starting and stopping problems of the high-pressure pump 9.

The mode of the conductivity (or TDS) switch 2 controlling the high-pressure pump 9 to work is (fig. 8):

the conductivity (or TDS) detector 3 controls the conductivity (or TDS) switch 2 to be switched on or off through an electric signal amplifier and a relay, and is provided with an indicator light. The conductivity (or TDS) on value and the conductivity (or TDS off value of the conductivity (or TDS) switch 2 are respectively G₂And G₃When the high voltage switch 19 is in the conducting state, the conductivity (or TDS) detector 3 detects that the conductivity (or TDS) value is higher than G₃When the red light is on, the conductivity (or TDS) switch 2 is controlled to be switched off, and the high-pressure pump 9 is stopped; when the conductivity (or TDS) detector 3 detects that the conductivity (or TDS) is lower than G₂The green light is on, the conductivity (or TDS) switch 2 is controlled to be closed, and the high-pressure pump 9 is started. The conductivity (or TDS) detector 3 is used for improving the pure water preparation rate, preventing overhigh concentrated water from flowing into the reverse osmosis membrane 10, protecting the reverse osmosis membrane 10, prolonging the service life and indicating a user to correctly use the water purifier by a traffic light.

The percentage of the minimum volume of the impure water section 26 to the volume of the reservoir determines which of the two possibilities is greater and higher for controlling the high pressure pump 9, higher for controlling the high pressure switch 19, lower, and higher for controlling the conductivity (or TDS) switch 2. The specific size is determined by the test and the use condition of the product.

The reverse osmosis water purifier comprises a water purifying tap 13, and a tap pipe of the water purifying tap 13 is communicated with a reverse osmosis membrane concentrated water outlet 12 and is communicated with a wastewater electromagnetic valve 33 (figures 1-6). The reverse osmosis water purifier is a wastewater-free reverse osmosis water purifier without a water inlet solenoid valve 14 (fig. 1-4), and the purified water tap 13 is a single-pipe tap (fig. 11, 3 rd tap). The water purification tap 13 is used in a reverse osmosis water purifier (figure 5, figure 6) with waste water, the water purification tap 13 is replaced by a three-pipe water purification tap 35 (figure 11, 4 th tap), the other two pipes of the three-pipe water purification tap 35 are valve pipes of a water purification valve 15 linked with the three-pipe water purification tap, the two valve pipes of the water purification valve 15 are connected in parallel at two ends of a water inlet electromagnetic valve 14, the three-pipe water purification tap 35 discharges purified water, and the water purification valve 15 is conducted at the same time, so that a reverse osmosis membrane is washed.

The water bag type double-isolation reverse osmosis water purifier has the advantages of providing three kinds of water, namely pure water, concentrated water (mixed water of a small amount of concentrated pure water and a large amount of tap water) and pure water, small volume, simple structure, small electric power and electric energy consumption, water discharge flow equal to tap water flow, multiple measures for protecting the reverse osmosis membrane 10, prolonged service life and improved performance of the water purifier, and is an updated product design of the existing reverse osmosis water purifier and industrial pure water equipment.

Drawings

FIG. 1 is a flow chart of a water bag type double-isolation single-tank reverse osmosis water purifier of the invention;

FIG. 2 is a flow chart of the water bag type double-isolation double-tank reverse osmosis water purifier of the invention;

FIG. 3 is a flow chart of a water bag type double-isolation three-tank reverse osmosis water purifier of the invention;

FIG. 4 is a flow chart of the reverse osmosis water purifier of the present invention without a waste water bag type water storage tank;

FIG. 5 is a flow chart of a reverse osmosis water purifier of the present invention with a water bag type reservoir;

FIG. 6 is a flow chart of the air bag type reverse osmosis water purifier of the present invention;

FIG. 7 is a graph showing the relationship between the pressures measured by the high-pressure switch;

FIG. 8 is a conductivity (or TDS) detector control value magnitude relationship;

FIG. 9 is a comparison of the flow rate over time;

FIG. 10 is a comparison of pressure with the change of volume of purified water;

FIG. 11 is a sample view of two pure water faucets and two pure water faucets;

FIG. 12 is a schematic diagram of a four cycle of a water bag type dual-isolation reverse osmosis water purifier 1;

fig. 13 is a schematic diagram of a four cycle of a water bag type double-isolation reverse osmosis water purifier 2.

Wherein:

1 power input, 2 conductivity (or TDS) switch, 3 conductivity (or TDS) detector, 4 water bag type double-isolation water storage tank, 5 tap water inlet, 6 1 st filter element, 7 nd 2 filter element, 8 rd 3 filter element, 9 high pressure pump, 10 reverse osmosis membrane, 11 reverse osmosis membrane pure water outlet, 12 reverse osmosis membrane concentrated water outlet, 13 pure water tap, 14 water inlet electromagnetic valve, 15 pure water valve, 16 pure water tap A, 17 post-arranged filter element A, 18 check valve A, 19 high pressure switch, 20 pure water area A, 21 pure water inlet and outlet A, 22 isolating body, 23 water permeable rigid plate, 24 tap water inlet and outlet, 25 exhaust valve, 26 non-pure water area, 27 pure water area B, 28 concentrated water inlet and outlet, 29 pure water inlet and outlet B, 30 check valve B, 31 pure water tap B, 32 post-arranged filter element B, 33 waste water electromagnetic valve, 34 original tap water tap group, 35 three-pipe tap water tap, 36 air region.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments (fig. 1-3).

The name of each pressure measured by the high-pressure switch 19: the pressure when the pure water tap drains off water is atmospheric pressure p₀Controlling the starting pressure of the high-pressure pump 9 to be the starting pressure p₁The pressure when the water is not completely discharged at the pure water faucet is the pure water discharging pressure p₂Tap water pressure of p₃Controlling the closing pressure of the high-pressure pump 9 to be the closing pressure p₄The pressure of the reverse osmosis membrane pure water outlet 11 of the working reverse osmosis membrane pure water outlet 11 of the high-pressure pump 9 is the blocked pressure p of the reverse osmosis membrane pure water outlet 11₅(ii) a The pure water has a conductivity (or TDS) value of G₀Tap water conductivity (or TDS) value of G₁The conductivity (or TDS) detector 3 sets a conductivity (or TDS) on value to G₂The conductivity (or TDS) off value is G₃. The high-voltage switch 19 measures the relationship between the pressure intensities: p₀<P₁<P₂<P₃<P₄<P₅As shown in FIG. 7, p₂And p₃The difference should be as small as possible otherwise the high voltage switch 19 is provided with difficulties. The conductivity (or TDS) detector 3 measures the magnitude relationship of each conductivity (or TDS) value: g₀<G₁<G₂<G₃As shown in fig. 8.

The whole process of the water bag type double-isolation reverse osmosis water purifier system is as follows:

preparation work: the water purifier is shut down, the two pure water taps are opened, the pure water inlet and outlet ball valves are opened, the exhaust valve 25 is closed, the tap water inlet and outlet 24 ball valve is opened, tap water enters the non-pure water area 26 of the water storage tank, water and air in the two pure water areas are completely discharged from the two pure water taps, and the two pure water taps are closed; opening the exhaust valve 25 until the exhaust valve 25 discharges water, and immediately closing the exhaust valve 25; at the moment, tap water is completely filled in the water storage tank, and air and pure water are not filled in the water storage tank.

Pure water enters a water storage tank: the water purifier is electrified to work, and the pressure intensity measured by the high-voltage switch 19 is less than the starting pressure intensity p₁The conductivity (or TDS) detected by the conductivity (or TDS) detector 3 is lower than the conductivity (or TDS) turn-on value G₂The high-pressure pump 9 is started, and the pressure measured by the high-pressure switch 19 after the start is the tap water pressure p₃The water flows inside the water purifier under the power of the high-pressure pump 9. Pure water seeps from the back of the reverse osmosis membrane 10, passes through the high-voltage switch 19 and the check valve, enters two pure water areas from a pure water inlet and outlet, concentrated water flows out from a waste water outlet in front of the reverse osmosis membrane 10, passes through the waste water electromagnetic valve 33 and the conductivity (or TDS) detector 3, enters the non-pure water area 26 from the concentrated water inlet and outlet 28, the water flowing out of the tap water inlet and outlet 24 is equal to the sum of the water flowing in from the concentrated water inlet and outlet 28 and the water flowing in from the pure water inlet and outlet, and the volumes of the water flowing in the pure. In the process of continuously increasing pure water in the water storage tank, two possibilities are available for closing the high-pressure pump 9: one is that when pure water occupies the maximum space of two pure water areas, the pressure measured by the high-voltage switch 19 is the blocked pressure p of the pure water outlet 11 of the reverse osmosis membrane₅Greater than the closing pressure p₄The high-pressure switch 19 is turned off, and the high-pressure pump 9 is turned off; the other is that at least one pure water area is not full of the maximum space, and the pressure measured by the high-pressure switch 19 is the tap water pressure p₃The high voltage switch 19 is turned on and the conductivity (or TDS) detector 3 detects a conductivity (or TDS) value higher than the conductivity (or TDS) off value G₃The red light is on, the conductivity (or TDS) switch 2 is off, and the high pressure pump 9 is turned off.

Pure water discharge water storage tank: the high-pressure pump 9 is in a closed state, a pure water tap is opened, and tap water flows from the tap water under the action of tap water pressureThe inlet and outlet 24 flows into the non-pure water area 26, pure water flows out from the pure water inlet and outlet at a constant flow, and the high-pressure switch 19 detects that the pressure is the pure water discharge pressure p₂There are two possibilities for starting the high-pressure pump 9:

if the conductivity (or TDS) switch 2 is in conduction state, the green light is on, and one pure water tap is turned on, and when the pure water tap is drained, the high-voltage switch 19 detects that the pressure is atmospheric pressure p₀Is less than p₁The high-voltage switch 19 is turned on and the high-voltage pump 9 is started. At the moment, the pure water tap is drained, and the other pure water tap can continue to drain pure water.

If the conductivity (or TDS) switch 2 is in the off state and the red light is on, discharging pure water can reduce the concentration of water in the non-pure water region 26, but the water in the conductivity (or TDS) detector 3 does not flow and cannot be detected, when pure water is drained, the high voltage switch 19 is turned on and the high voltage pump 9 still cannot be started. The red light is on to indicate that the concentrate is reducing the concentration of the water in the impure water region 26, the concentrate tap is opened to discharge the concentrate, and when the water in the impure water region 26 is substantially replaced with tap water, the conductivity (or TDS) detector 3 detects that the conductivity (or TDS) is less than G₂The green light is on and the high pressure pump 9 is started. Since the original tap group 34 discharges more water in life, the chance of the situation is less.

Concentrated water discharging and storing tank: when the high-pressure pump 9 is turned off, the original tap water faucet group 34 is opened, under the pressure of tap water, the tap water flows into the non-pure water area 26 from the tap water inlet/outlet 24, the concentrated water flows out from the concentrated water inlet/outlet 28 at a constant flow rate, the conductivity (or TDS) detected by the conductivity (or TDS) detector 3 is gradually reduced, and if the power-off is caused by the fact that the conductivity (or TDS) is higher than G₃As a result, the specific amount of water flowing out has a conductivity (or TDS) lower than G₂The green light is on and the high pressure pump 9 is turned on. The former 34 drainage of tap water tap group of this patent is little different with general tap water tap, lets as much as possible's running water discharge through this water purifier, and the water of putting is more close the running water to improve the system water quality of water purifier, prolonged reverse osmosis membrane 10's life.

The function of this patent water purification tap 13: a water purifying faucet 13 of a reverse osmosis dual-purpose machine for pure water and pure water on the market is arranged in front of a water inlet electromagnetic valve 14 and has no relation with reverse osmosis filtration. The purified water tap 13 of the reverse osmosis water purifier is communicated with the reverse osmosis membrane concentrated water outlet 12 and is communicated with a wastewater electromagnetic valve 33 (figures 1-6), and purified water is discharged through a reverse osmosis membrane 10 and is related to the reverse osmosis membrane 10.

The reverse osmosis water purifiers and the water bag type water storage tank reverse osmosis water purifiers sold in the market have waste water discharge, tap water can be discharged continuously when the high-pressure pump 9 stops the reverse osmosis membrane concentrated water outlet 12, therefore, a water inlet electromagnetic valve 14 is required, the water purification faucet 13 of the patent is used for the water purifier with waste water discharge and uses a three-pipe water purification faucet 35 (figure 11, 4 th faucet), the other two pipes of the three-pipe water purification faucet 35 are valve pipes of a water purification valve 15 linked with the three-pipe water purification faucet 35, the two valve pipes of the water purification valve 15 are connected at two ends of the water inlet electromagnetic valve 14 in parallel, the three-pipe water purification faucet 35 discharges purified water and the water purification valve 15 is conducted (figures 5 and 6), and the design is that the reverse osmosis membrane 10 is washed no matter whether the high-pressure pump 9. If the high-pressure pump 9 works when releasing the purified water, the power of tap water is increased by the power of the high-pressure pump 9, the flow is larger, and the service life of the reverse osmosis membrane 10 is prolonged by the function. The reverse osmosis water purifier of this patent is the water purifier (fig. 1-4) that does not have waste water discharge, and no tap water flows out when high-pressure pump 9 shuts down, does not need into water solenoid valve 14, and clean water tap 13 only needs the single tube tap (fig. 11 3 tap) to reach the same function.

The data analysis of the simultaneous discharge of pure water in four continuous circulating water production processes of the water bag type double-isolation water storage tank water purifier is as follows:

the filtering process of water in the water bag type double-isolation water storage tank water purifier is a continuous circulating process, and the specific effect can be explained by using theoretical data. Is provided withaIs a pure water unit, b is a macroscopic large-particle pollutant unit, and C is a microscopic macromolecular pollutant unit. The third stage of filtration is to filter macroscopic large-particle pollutants, the reverse osmosis membrane 10 is to filter microscopic macromolecular pollutants, if the microscopic macromolecular pollutants are not diffused when water moves in the water storage tank, the wastewater ratio is adjusted to make the ratio of pure water output by the reverse osmosis membrane 10 to concentration water be one to three, and the data of four circulation processes are shown in figure 12The right box in the figure is shown as a reservoir, above which is a non-pure water region 26, below which is a pure water region, and the arrow indicates the direction of water flow.

The initial state of the input tap water is 4a+4b +4c, storing in water storage tank, circulating one week for each water circulation in non-pure water region 26, decomposing into one fourth pure water and storing in pure water region, returning three fourths of concentrated water to non-pure water region 26, and discharging pure wateraWhile simultaneously feeding tap water 26 in the non-pure water area into the water tanka+ b + c. The input system of the four circulation processes is tap water 8a+8b +8c, output pure water of 4aThe concentration of the non-pure water in the region 26 is 4a+8c, the water in the region 26 of impure water is increasingly concentrated from top to bottom. The water can be circulated continuously, and the nth highest concentration water in the non-pure water area 26 is

The conductivity (or TDS) detector 3 detects the conductivity (or TDS) value of the highest concentration water, when the conductivity (or TDS) of the highest concentration water is higher than the turn-off value G of the conductivity (or TDS) detector 3₃The conductivity (or TDS) detector 3 controls the high-pressure pump 9 to be turned off to stop circulation, and an indicator light red light of the conductivity (or TDS) detector 3 is turned on to prompt that the water in the non-pure water area 26 is discharged to reduce the concentration of the water so as to start the high-pressure pump 9 to continue circulation.

The four cycles are one fourth of the cycle of discharging pure water, and if no pure water is discharged during the water circulation, the pure water is circulated until the conductivity (or TDS) detector 3 detects that the conductivity (or TDS) value is higher than the turn-off value G₃The high-pressure pump 9 was turned off, and fig. 13 is a water concentration condition analysis of four cycles without discharging pure water. Pure water is not discharged, tap water is not supplemented at the same time, and the concentration of the circulating water is increased more quickly.

In fact, water circulation in the water purifier is continuous, water discharging and water producing are dynamically changed, the ratio of pure water to concentrated water is reduced as the water concentration is increased, the quality of the pure water is also reduced, and the data in fig. 12 and 13 are the results of idealized analysis, which helps to understand the working process of the air bag type double-isolation reverse osmosis water purifier.

The water production process of the air bag type pressure tank water purifier is equivalent to the result of the 1 st circulation of the water bag type two-membrane water purifier, and the pure water is producedaThe discharged wastewater is 3a+4c, no matter how the quality of running water, all once filter, the waste water concentration of putting is not necessarily very high, is very big waste, shows the superiority of water bag formula double isolation water purifier obviously through data analysis.

The present invention is not a single water purifier, but a water supply device capable of decomposing tap water into three kinds of water with different concentrations. The water purifier can not only be used by pure water, so that the red light is indicated by conductivity (or TDS) very fast, the high-pressure pump 9 stops working, and a user is prompted to put tap water to dilute the concentration of water in the water storage tank. In fact, our lives use far more tap water than pure water, and there is little chance of the conductivity (or TDS) red light being on.

The water purifier of the invention can perform several circulations in the water purifier according to three aspects: the quality of tap water, the arrangement of the waste water electromagnetic valve 33 and the arrangement of the conductivity (or TDS) closing value of the conductivity (or TDS) detector 3 do not achieve the main purpose of the invention, the concentrated water is effectively utilized, the reasonable waste water ratio and the conductivity (or TDS) closing value are arranged, the cycle number is properly reduced, the overhigh concentrated water is prevented from flowing into the reverse osmosis membrane 10, the electric energy loss is reduced, the reverse osmosis membrane 10 is protected, and the service life is prolonged more importantly.

The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are 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

1. The utility model provides a reverse osmosis water purifier with two retaining water tanks of keeping apart of water pocket formula, characterized by, reverse osmosis water purifier includes leading filter, high-pressure pump (9), reverse osmosis membrane (10) filter, two retaining water tanks (4), pure water tap A (16), pure water tap B (31), former tap group (34) of keeping apart of water pocket formula, two retaining water tanks (4) of water pocket formula use two insulators (22) to divide into three regions with two retaining water tanks (4) of water pocket formula, and the centre is regional (26) of non-pure water, and both ends are regional A (20) of pure water and regional B (27) of pure water respectively, wherein:

a pure water inlet and outlet A (21) of the pure water area A (20) is communicated with a pure water tap A (16) through a post-positioned filter element A (17) and is communicated with a reverse osmosis membrane pure water outlet (11) of the water purifier through a check valve A (18) and a high-pressure switch (19);

a pure water inlet and outlet B (29) of the pure water area B (27) is communicated with a pure water tap B (31) through a post-positioned filter element B (32) and is communicated with a reverse osmosis membrane pure water outlet (11) of the water purifier through a check valve B (30) and a high-pressure switch (19);

an exhaust valve (25) is arranged at the top of the non-pure water area (26); a tap water inlet and outlet (24) of the non-pure water area (26) is communicated with a tap water inlet (5); and a concentrated water inlet and outlet (28) of the non-pure water area (26) is communicated with an original tap water faucet group (34) through a conductivity (or TDS) detector (3) and is communicated with a reverse osmosis membrane concentrated water outlet (12) through the conductivity (or TDS) detector (3) and a wastewater electromagnetic valve (33).

2. A reverse osmosis water purifier as claimed in claim 1, wherein the water bag type double-isolation water storage tank (4) is an ellipsoid, a cylinder or a cylinder with two hemispherical ends, and the tank body is made of non-toxic and harmless water-impermeable plastic or stainless steel capable of bearing a 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.

3. A reverse osmosis water purifier as claimed in claim 2, wherein the isolating body (22) in the water bag type double-isolation water storage tank (4) is made of rubber, plastic or other water-tight food safety grade material; the shape of the water storage tank is capsule type, folding type, movable type or other forms which can change the volume of each part in the water storage tank and ensure that the parts are not communicated with each other; the non-pure water area (26) is provided with two permeable rigid plates (23), the permeable rigid plates (23) are made of non-toxic and harmless plastic or stainless steel materials, and the permeable rigid plates (23) are provided with permeable holes and are respectively fixed at the maximum displacement positions of the two isolating bodies (22) and are connected with the inner wall of the tank body into a whole.

4. A reverse osmosis water purifier as claimed in claim 1, wherein a switching circuit is provided between the high pressure pump (9) and the power supply, and is formed by connecting a high pressure switch (19) in series with the conductivity (or TDS) switch (2); the conductivity (or TDS) switch (2) is controlled by a conductivity (or TDS) detector (3).

5. A reverse osmosis water purifier according to claim 4, wherein the conductivity (or TDS) detector (3) controls the conductivity (or TDS) switch (2) to be turned on and off through an electric signal amplifier and a relay, and the conductivity (or TDS) on value and the conductivity (or TDS off value of the conductivity (or TDS) switch (2) are G and T, respectively₂And G₃When the high-voltage switch (19) is in a conducting state, the conductivity (or TDS) detector (3) detects that the conductivity (or TDS) value is higher than G₃When the red light is on, the conductivity (or TDS) switch (2) is controlled to be disconnected, and the high-pressure pump (9) is stopped; when the conductivity (or TDS) value is lower than G₂And when the green light is on, the conductivity (or TDS) switch (2) is controlled to be closed, and the high-pressure pump (9) is started.

6. A reverse osmosis water purifier according to claim 4, wherein the high pressure switch (19) controls the high pressure pump (9) to operate in the following manner:

the high-voltage switch (19) sets a starting pressure p in the conductive state of the conductivity (or TDS) switch (2)₁Pressure p less than that of discharging pure water₂Greater than atmospheric pressure p_0，When water in a pure water area is drained, the high-pressure switch (19) is closed, so that the high-pressure pump (9) is started; high-voltage switch (1)9) Setting the closing pressure p₄Greater than the tap water pressure p₃Pressure p less than the blockage pressure p of pure water outlet 11 of reverse osmosis membrane₅When the two pure water areas are filled with the pure water in the maximum space, the high-pressure switch (19) is switched off, and the high-pressure pump (9) is stopped.

7. A reverse osmosis water purifier according to claim 1, wherein the reverse osmosis water purifier comprises a clean water tap (13), and a tap pipe of the clean water tap (13) is communicated with the reverse osmosis membrane concentrate outlet (12) and with the waste water solenoid valve (33).

8. A reverse osmosis water purifier according to claim 7, wherein the wastewater-free reverse osmosis water purifier is free of a water inlet solenoid valve (14), and the clean water tap (13) is a single-pipe tap; the water purification faucet (13) is used in a reverse osmosis water purifier with waste water, and is provided with a water inlet electromagnetic valve (14), the water purification faucet (13) is a three-pipe faucet, the other two water pipes of the three-pipe faucet are valve pipes of a water purification valve (15) linked with the three-pipe faucet, the two valve pipes of the three-pipe faucet are connected with the two ends of the water inlet electromagnetic valve (14) in parallel, and the three-pipe faucet discharges purified water and simultaneously conducts the water purification valve (15).

9. A reverse osmosis water purifier according to any one of claims 1 to 8, wherein the reverse osmosis water purifier comprises two water storage tanks having the same function, each water storage tank having an isolation body (22), a permeable rigid body plate (23), a non-pure water region (26), a pure water region, a concentrate inlet/outlet (28) provided in the non-pure water region (26), a tap water inlet/outlet (24) and an exhaust valve (25) provided in the non-pure water region (26), a pure water inlet/outlet provided in the pure water region, and a concentrate inlet/outlet (28) connecting the two concentrate inlets/outlets (28) as a whole, the two tap water inlet/outlets (24) being connected as a whole.

10. A reverse osmosis water purifier according to any one of claims 1 to 8, wherein the reverse osmosis water purifier comprises two water storage tanks with the same function and a third tank, the two water storage tanks with the same function are respectively provided with an isolating body (22), a non-pure water area (26), a pure water area, a concentrated water inlet and outlet (28) arranged at the bottom of the non-pure water area (26), an upper inlet and outlet arranged at the top of the non-pure water area (26) and a pure water inlet and outlet arranged at the pure water area, and the non-pure water area (26) and the pure water area have the same symmetrical volume relative to the isolating body (22); the third tank is a non-pure water area (26), a tap water inlet and outlet (24) and an exhaust valve (25) are arranged at the top of the third tank, a lower inlet and outlet is arranged at the bottom of the third tank, two upper inlet and outlet openings are connected with one lower inlet and outlet opening, and two concentrated water inlet and outlet openings (28) are connected to form an integral concentrated water inlet and outlet opening (28).