CN104591341A - Water purification system - Google Patents

Abstract

The invention discloses a water purification system, comprising: a reverse osmosis filter element having a raw water inlet, a pure water outlet and a concentrated water outlet; a raw water inlet pipe; a pure water outlet pipe; a concentrated water outlet pipe; a water inlet control valve; Waste water ratio control valve; on-off switch; built-in water storage container between the on-off switch and the reverse osmosis filter element; water pump; one end is located between the water inlet control valve and the reverse osmosis filter element, and the other end is located between the water pump and the on-off switch The flushing pipeline; one end is connected to the flushing pipeline, and the other end is located between the reverse osmosis filter element and the built-in water storage container; the one-way valve; the flushing control valve between the pure water outlet pipe and the raw water inlet pipe ; A controller communicating with the on-off switch, water inlet control valve, waste water ratio control valve, water pump and flushing control valve respectively. The water purification system according to the embodiment of the present invention has the advantages of small space occupation, good water purification effect, less secondary pollution, and long service life.

Description

water purification system

technical field

The invention relates to the technical field of electric appliance manufacturing, in particular to a water purification system.

Background technique

The water purification system in the related art requires a pressure tank outside the water purification system to store pure water due to its small system flow rate. Long-term storage of pure water in the tank will cause secondary pollution.

The water purification system without a pressure tank needs to use a large-capacity reverse osmosis filter element and a high-power booster pump. Not only is the cost high, but after shutdown, two-way permeation will occur between the wastewater, purified water and raw water in the reverse osmosis membrane. The TDS (total dissolved solids) of the pure water in the reverse osmosis membrane is increased, resulting in a higher TDS in the water at the initial stage of water intake by the user.

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. Therefore, the present invention proposes a water purification system, which has the advantages of small space occupation, good water purification effect, less secondary pollution, and long service life.

In order to achieve the above object, a water purification system is proposed according to an embodiment of the present invention, the water purification system includes: a reverse osmosis filter element, the reverse osmosis filter element has a raw water inlet, a pure water outlet and a concentrated water outlet; Water inlet pipe, the raw water inlet pipe is connected with the raw water inlet and the water source of the reverse osmosis filter element respectively; the pure water outlet pipe, the pure water outlet pipe is connected with the pure water outlet of the reverse osmosis filter element; the concentrated water outlet Water pipe, the concentrated water outlet pipe is connected with the concentrated water outlet of the reverse osmosis filter element; water inlet control valve, the water inlet control valve is arranged on the raw water inlet pipe; waste water ratio control valve, the waste water ratio The control valve is set on the concentrated water outlet pipe; the on-off switch is set on the pure water outlet pipe; the built-in water storage container is set on the pure water outlet pipe on, and the built-in water storage container is located between the on-off switch and the reverse osmosis filter element; the water pump, the water pump is arranged on the pure water outlet pipe, and the water pump is located in the built-in water storage container Between the on-off switch and the flushing pipeline, one end of the flushing pipeline is connected to the raw water inlet pipe, and one end of the flushing pipeline is located between the water inlet control valve and the reverse osmosis filter element Between, the other end of the flushing pipeline is connected to the pure water outlet pipe, and the other end of the flushing pipeline is located between the water pump and the start-stop switch; the pure water outlet branch pipe, the One end of the pure water outlet branch pipe is connected to the flushing pipeline, the other end of the pure water outlet branch pipe is connected to the pure water outlet pipe, and the other end of the pure water outlet branch pipe is located between the reverse osmosis filter element and Between the built-in water storage containers; one-way valve, the one-way valve is arranged on the pure water outlet branch pipe, and the one-way valve only allows the water in the pure water outlet pipe to pass through the pure water outlet The branch pipe flows to the flushing pipeline; the flushing control valve is arranged on the flushing pipeline, and the flushing control valve is located between the pure water outlet branch pipe and the raw water inlet pipe; the controller, The controller communicates with the on-off switch, the water inlet control valve, the wastewater ratio control valve, the water pump and the flushing control valve respectively.

The water purification system according to the embodiment of the present invention has the advantages of small space occupation, good water purification effect, less secondary pollution, and long service life.

In addition, the water purification system according to the above-mentioned embodiments of the present invention can also have the following additional technical features:

According to an embodiment of the present invention, the controller is an electric control board with a clock module or a photoresistor.

According to an embodiment of the present invention, the water purification system further includes: a primary filter element, the primary filter element is arranged on the raw water inlet pipe, and the primary filter element is located between the water source and the water inlet control between the valves; the pre-filter, the pre-filter is set on the raw water inlet pipe, and the pre-filter is located between the water inlet control valve and the flushing pipeline; the post-filter, the The post filter element is arranged on the pure water outlet pipe, and the post filter element is located between the start-stop switch and the flushing pipeline.

According to an embodiment of the present invention, the water purification system further includes a booster pump, the booster pump is arranged on the raw water inlet pipe, and the booster pump is located between the water inlet control valve and the pre-filter element In between, the controller communicates with the booster pump.

According to an embodiment of the present invention, the primary filter element is a PP cotton filter element, and both the pre-filter element and the post-filter element are activated carbon filter elements.

According to an embodiment of the present invention, the on-off switch is a high-pressure switch or a flow switch, and the on-off switch is arranged adjacent to the outlet end of the pure water outlet pipe.

According to an embodiment of the present invention, the water inlet control valve, the waste water ratio control valve and the flushing control valve are all solenoid valves.

According to an embodiment of the present invention, the built-in water storage container includes: a tank body, the tank body is provided with an opening; a flexible water bag, the flexible water bag is arranged in the tank body; a top cover, the top cover A cover is detachably installed on the tank body to cover the opening, the flexible water bag is connected to the top cover, and the top cover is provided with a water channel that communicates with the inside of the flexible water bag hole; upper joint, the upper joint is detachably installed on the top cover, and the upper joint is connected with the pure water outlet pipe, and the upper joint is provided with the water hole and the A water passage connected to the pure water outlet pipe; a water level detection device, the water level detection device is installed on the top cover, and at least a part of the water level detection device extends into the flexible water bag.

According to an embodiment of the present invention, the flexible water bag includes an environmentally friendly inner layer, a flexible middle layer and a high and low temperature resistant outer layer bonded together.

According to an embodiment of the present invention, the water level detection device includes: a central pipe, the central pipe is installed on the top cover, and the central pipe extends into the flexible water bag, and one end of the central pipe It communicates with the water hole, and the part of the central pipe located in the flexible water bag is provided with a number of water holes; the reed switch, the reed switch is installed on the top cover, and The dry reed switch is adjacent to the central tube; the floating ball is arranged in the central tube so as to move up and down, and the floating ball is provided with a magnetic piece for touching the dry reed switch.

Description of drawings

Fig. 1 is a schematic structural diagram of a water purification system in a normal water production state according to an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of a water purification system in a flushing state according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a built-in water storage container of a water purification system according to an embodiment of the present invention.

4 is a cross-sectional view of a built-in water storage container of a water purification system according to an embodiment of the present invention.

Reference signs: water purification system 1, reverse osmosis filter element 100, raw water inlet 110, pure water outlet 120, concentrated water outlet 130, raw water inlet pipe 200, pure water outlet pipe 300, concentrated water outlet pipe 400, water inlet Control valve 500, wastewater ratio control valve 600, on-off switch 700, built-in water storage container 800, tank body 810, opening 811, flexible water bag 820, top cover 830, water hole 831, upper joint 840, water passage 841 , central pipe 850, small water hole 851, floating ball 860, magnetic parts 861, water pump 900, flushing pipeline 1000, pure water outlet branch pipe 1100, one-way valve 1200, flushing control valve 1300, primary filter element 1400, front Filter element 1500, rear filter element 1600, booster pump 1700.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

A water purification system 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in Figures 1-4, the water purification system 1 according to the embodiment of the present invention includes a reverse osmosis filter element 100, a raw water inlet pipe 200, a pure water outlet pipe 300, a concentrated water outlet pipe 400, a water inlet control valve 500, a waste water ratio Control valve 600, on/off switch 700, built-in water storage container 800, water pump 900, flushing pipeline 1000, pure water outlet branch pipe 1100, one-way valve 1200, flushing control valve 1300 and controller.

The reverse osmosis filter element 100 has a raw water inlet 110 , a pure water outlet 120 and a concentrated water outlet 130 . The raw water inlet pipe 200 is respectively connected with the raw water inlet 110 of the reverse osmosis filter element 100 and the water source, and the pure water outlet pipe 300 is connected with the pure water outlet 120 of the reverse osmosis filter element 100 . The concentrated water outlet pipe 400 is connected to the concentrated water outlet 130 of the reverse osmosis filter element 100 . The water inlet control valve 500 is arranged on the raw water inlet pipe 200 and the wastewater ratio control valve 600 is arranged on the concentrated water outlet pipe 400 . The on/off switch 700 is located on the pure water outlet pipe 300 . The built-in water storage container 800 is arranged on the pure water outlet pipe 300 , and the built-in water storage container 800 is located between the start-stop switch 700 and the reverse osmosis filter element 100 . The water pump 900 is arranged on the pure water outlet pipe 300 , and the water pump 900 is located between the built-in water storage container 800 and the on/off switch 700 . One end of the flushing pipeline 1000 is connected to the raw water inlet pipe 200, and the one end of the flushing pipeline 1000 is located between the water inlet control valve 500 and the reverse osmosis filter element 100, and the other end of the flushing pipeline 1000 is connected to the pure water outlet pipe 300 , and the other end of the flushing pipeline 1000 is located between the water pump 900 and the on/off switch 700 . One end of the pure water outlet branch pipe 1100 is connected to the flushing pipeline 1000, the other end of the pure water outlet branch pipe 1100 is connected to the pure water outlet pipe 300, and the other end of the pure water outlet branch pipe 1100 is located between the reverse osmosis filter element 100 and the built-in Between the water storage container 800. The one-way valve 1200 is arranged on the pure water outlet pipe 1100 , and the one-way valve 1200 only allows the water in the pure water outlet pipe 300 to flow to the flushing pipeline 1000 through the pure water outlet pipe 1100 . The flushing control valve 1300 is arranged on the flushing pipeline 1000 , and the flushing control valve 1300 is located between the pure water outlet branch pipe 1100 and the raw water inlet pipe 200 . The controller communicates with the on-off switch 700 , the water inlet control valve 500 , the wastewater ratio control valve 600 , the water pump 900 and the flushing control valve 1300 respectively.

The following describes the working process of the water purification system 1 according to the embodiment of the present invention with reference to FIG. 1 and FIG. 2 .

When the water purification system 1 is in the normal water production state, as shown in Figure 1, when the user is not taking water, the on-off switch 700 is in the off state, the water pump 900 is turned off, the water inlet control valve 500 is turned on, and the raw water passes through the raw water inlet pipe 200 into the reverse osmosis filter element 100, after being purified by the reverse osmosis filter element 100, replenish water to the built-in water storage container 800 until the water is full. When the user takes water, the on-off switch 700 is closed, and the controller controls the water inlet control valve 500 to open after receiving the signal, so that the raw water is purified by the reverse osmosis filter element 100 and then flows into the pure water outlet pipe 300; at the same time, the water pump 900 is turned on, The pure water purified before is extracted from the built-in water storage container 800, and the pure water flows out from the pure water outlet pipe 300 after the two paths of pure water are mixed. After the pure water in the built-in water storage container 800 is drained, the raw water passes through the reverse osmosis filter element 100 After purification, the water is supplied to the user alone. When the user stops taking water, the on-off switch 700 is turned off, and the controller controls the water purification system 1 to enter the water production state again after receiving the signal, and stores the built-in water storage container 800 with pure water.

When the water purification system 1 is in the flushing state, as shown in Figure 2, the controller controls the water pump 900, the flushing control valve 1300 and the waste water ratio control valve 600 to open, and the pure water in the built-in water storage container 800 is pumped out by the water pump 900, It enters the reverse osmosis filter element 100 through the flushing pipeline 1000 , and is discharged from the concentrated water outlet pipe 400 through the wastewater ratio control valve 600 after flushing the reverse osmosis filter element 100 .

According to the water purification system 1 of the embodiment of the present invention, by setting the built-in water storage container 800, compared with the way of storing water in an external pressure tank in the related art, the space occupied by the water purification system 1 can be reduced and the utilization rate of the space can be improved. , save the user's kitchen space.

Moreover, by setting the built-in water storage container 800, water can be supplied together through the built-in water storage container 800 and the reverse osmosis filter element 100 at the initial stage of water intake by the user, so that the pure water in the built-in water storage container 800 can be used to dilute the water passing through the reverse osmosis filter element 100 , thereby reducing the TDS value in the water at the initial stage of water intake, and as the user draws water, the TDS in the reverse osmosis filter element 100 decreases accordingly, even after the water in the built-in water storage container 800 is drained, the TDS in the water taken by the user will not significantly increased.

In addition, by controlling the water purification system 1 to flush through the controller, not only can the raw water at the front end of the reverse osmosis filter element 100 be continuously replaced by pure water in the built-in water storage container 800, so that the salt content at the front end of the reverse osmosis filter element 100 is gradually reduce until it is consistent with pure water, thereby preventing fouling of the reverse osmosis filter element 100, prolonging the service life of the reverse osmosis filter element 100, and discharging the water in the built-in water storage container 800 to prevent the water in the built-in water storage container 800 from growing Secondary pollution will occur if left for a long time, eliminating the user's concern that bacteria will easily grow in the water in the built-in water storage container 800 if left for a long time.

Therefore, the water purification system 1 according to the embodiment of the present invention has the advantages of small space occupation, good water purification effect, less secondary pollution, and long service life.

A water purification system 1 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

In some specific embodiments of the present invention, as shown in FIGS. 1-4 , the water purification system 1 according to the embodiment of the present invention includes a reverse osmosis filter element 100, a raw water inlet pipe 200, a pure water outlet pipe 300, and a concentrated water outlet pipe. 400, water inlet control valve 500, waste water ratio control valve 600, on-off switch 700, built-in water storage container 800, water pump 900, flushing pipeline 1000, pure water outlet branch pipe 1100, one-way valve 1200, flushing control valve 1300 and control device.

The controller can be an electric control board with a clock module or a photoresistor. In this way, the clock module or the photoresistor can be used to determine whether it is nighttime, so that the controller can only flush at nighttime, thereby avoiding the period when users often need water.

Fig. 1 and Fig. 2 show a water purification system 1 according to a specific example of the present invention. As shown in FIGS. 1 and 2 , the water purification system 1 may further include a primary filter element 1400 , a pre-filter element 1500 and a post-filter element 1600 . The primary filter element 1400 can be arranged on the raw water inlet pipe 200 , and the primary filter element 1400 can be located between the water source and the water inlet control valve 500 . The pre-filter element 1500 can be arranged on the raw water inlet pipe 200 , and the pre-filter element 1500 can be located between the water inlet control valve 500 and the flushing pipeline 1000 . The rear filter element 1600 can be arranged on the pure water outlet pipe 300 , and the rear filter element 1600 can be located between the start-stop switch 700 and the flushing pipeline 1000 . Therefore, not only can the primary filter element 1400 and the pre-filter element 1500 be used to filter the raw water, and then filter through the reverse osmosis filter element 100, but also the water can be filtered through the post-filter element 1600 before it is discharged from the water purification system 1, thereby The water purification effect of the water purification system 1 is further improved.

Advantageously, as shown in FIG. 1 and FIG. 2 , the water purification system 1 can also include a booster pump 1700, the booster pump 1700 can be arranged on the raw water inlet pipe 200, and the booster pump 1700 can be located between the water inlet control valve 500 and Between the pre-filter element 1500, the controller can communicate with the booster pump 1700. Thus, the pressure of the water in the raw water inlet pipe 200 can be guaranteed, thereby ensuring that the water in the water purification system 1 can flow normally along a predetermined direction.

Optionally, the primary filter element 1400 may be a PP cotton filter element, and the pre-filter element 1500 and the post-filter element 1600 may both be activated carbon filter elements. In this way, not only the water purification effect of the water purification system 1 can be improved. Moreover, the service life of the water purification system 1 can be extended.

Specifically, the on/off switch 700 may be a high pressure switch or a flow switch, and the on/off switch 700 may be disposed adjacent to the water outlet end of the pure water outlet pipe 300 . Specifically, when the on/off switch 700 is a high-pressure switch, it can be directly triggered by opening and closing the faucet; closure.

Wherein, the water inlet control valve 500, the waste water ratio control valve 600 and the flushing control valve 1300 may all be electromagnetic valves. Therefore, it is convenient to control the opening or closing of the raw water inlet pipe 200 , the flushing pipeline 1000 and the concentrated water outlet pipe 400 , so as to control the working state of the water purification system 1 .

Fig. 3 and Fig. 4 show a water purification system 1 according to a specific embodiment of the present invention. As shown in Figures 3 and 4, the built-in water storage container 800 may include a tank body 810, a flexible water bag 820, a top cover 830, an upper connector 840 and a water level detection device (as shown by arrow A in Figures 3 and 4 in the up and down direction). Show). An opening 811 may be provided on the tank body 810 . A flexible water bag 820 may be provided in the tank body 810 . The top cover 830 can be detachably installed on the tank body 810 to cover the opening 811, the flexible water bag 820 can be connected to the top cover 830, and the top cover 830 can be provided with a water hole communicating with the inside of the flexible water bag 820 831. The upper joint 840 can be detachably installed on the top cover 830, and the upper joint 840 can be connected with the pure water outlet pipe 300, and the upper joint 840 can be provided with a water outlet connected to the water hole 831 and the pure water outlet pipe 300 respectively. Channel 841. The water level detection device can be installed on the top cover 830 , and at least a part of the water level detection device can extend into the flexible water bag 820 .

Since the flexible water bag 820 can flexibly deform with the change of the internal water volume during use, it will not bear excessive pressure due to the increase or decrease of the water volume, thereby avoiding bursting due to pressure changes. By setting the tank body 810, the tank body 810 can be used to protect the flexible water bag 820, thereby prolonging the service life of the flexible water bag 820, and because the flexible water bag 820 is flexible, it can be easily taken out from the tank body 810 and put into the tank body 810, so as to facilitate the replacement of the flexible water bag 820. By setting the water level detection device, the water level in the flexible water bag 820 can be detected by the water level detection device, so as to control the opening and closing of the water purification system 1 according to the water volume in the flexible water bag 820 . For example, when there is less pure water in the flexible water bag 820, start the water purification system 1 to start water production, store the purified water in the flexible water bag 820, and stop the water purification system when there is enough water in the flexible water bag 820 1 water production, so as to avoid the waste of resources caused by the long-term work of the water purification system 1. When the user needs to take water, the water is drawn out from the flexible water bag 820 through the water hole 831 of the top cover 830 and the water passage 841 of the upper joint 840 , for the user to use.

Specifically, the flexible water bag 820 may include an environmentally friendly inner layer, a flexible middle layer and a high and low temperature resistant outer layer bonded together. Therefore, the high and low temperature resistant outer layer can be used to ensure that the flexible water bag 820 has good high temperature resistance and low temperature resistance, so as to ensure that the flexible water bag 820 will not be damaged due to excessively high or low temperature. The flexible middle layer is used to ensure that the flexible water bag 820 has good flexibility, so that the flexible water bag 820 will not leak due to repeated contraction and expansion. The environment-friendly inner layer is used to ensure that the part of the flexible water bag 820 in contact with water is healthy and environment-friendly, and it is not easy to cause secondary pollution to pure water, so as to ensure the health of drinking.

Specifically, the high and low temperature resistant outer layer may be a polyethylene terephthalate (PET) outer layer, a polyamide (PA) outer layer or an o-phenylphenol (OPP) outer layer, and the flexible middle layer It may be a polyamide middle layer, and the environmental protection inner layer may be a polyethylene (PE) inner layer. Thus, the high and low temperature resistant outer layer can have good high and low temperature resistance and folding resistance, and is non-toxic and tasteless, the flexible middle layer has good flexibility and folding resistance, and the environmental protection inner layer has Good chemical stability and tightness.

Of course, under the condition that the flexible water bag 820 is hygienic and environmentally friendly, has antibacterial effect, meets periodic inflation and contraction (more than 10,000 times), can withstand cold and hot environments, and can be used normally under different temperature environments in different regions, The materials of the high and low temperature resistant outer layer, the flexible middle layer and the environmental protection inner layer can also be selected from a combination of other materials, and the flexible water bag 820 can also be formed by bonding two or more layers of materials.

Advantageously, as shown in FIG. 4 , the water level detection device may include a central tube 850 , a reed switch (not shown in the figure) and a float 860 . The central pipe 850 can be installed on the top cover 830, and the central pipe 850 can extend into the flexible water bag 820, and one end of the central pipe 850 can communicate with the water hole 831, and the part of the central pipe 850 located in the flexible water bag 820 Several small holes 851 for passing water may be provided on the top. The reed switch may be installed on the top cover 830 and the reed switch may be adjacent to the central tube 850 . The floating ball 860 can be movable up and down in the central tube 850 , and the floating ball 860 can be provided with a magnetic piece 861 for touching the reed switch. Therefore, when the water level rises to a high enough level, the magnetic member 861 can be used to touch the reed switch to send a signal to the controller to stop storing water in the flexible water bag 820 , thereby realizing the detection of the water level. Setting the central tube 850 can ensure that the floating ball 860 can move up and down along the central tube 850 . Setting the small water hole 851 can facilitate the flow of water.

Specifically, the float 860 may be a high polymer polypropylene piece. This can facilitate the setting of the magnetic piece 861, so that the floating ball 860 can float in the water after the built-in magnetic piece 861, and can prevent the floating ball 860 from being damaged due to being placed in water for a long time.

Of course, the water level monitoring device can also measure the water level in the flexible water bag 820 by means of water pressure sensing, infrared sensing, micro switch, gravity sensing and other methods.

Other configurations and operations of the water purification system 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A water purification system, characterized in that, comprising: A reverse osmosis filter element, the reverse osmosis filter element has a raw water inlet, a pure water outlet and a concentrated water outlet; Raw water inlet pipe, the raw water inlet pipe is respectively connected with the raw water inlet and the water source of the reverse osmosis filter element; A pure water outlet pipe, the pure water outlet pipe is connected to the pure water outlet of the reverse osmosis filter element; a concentrated water outlet pipe, the concentrated water outlet pipe is connected to the concentrated water outlet of the reverse osmosis filter element; A water inlet control valve, the water inlet control valve is arranged on the raw water inlet pipe; A waste water ratio control valve, the waste water ratio control valve is arranged on the concentrated water outlet pipe; On-off switch, the on-off switch is set on the pure water outlet pipe; A built-in water storage container, the built-in water storage container is arranged on the pure water outlet pipe and is located between the on-off switch and the reverse osmosis filter element; A water pump, the water pump is arranged on the pure water outlet pipe and is located between the built-in water storage container and the on-off switch; A flushing pipeline, one end of the flushing pipeline is connected to the raw water inlet pipe and is located between the water inlet control valve and the reverse osmosis filter element, and the other end of the flushing pipeline is connected to the pure water on the water outlet pipe and between the water pump and the on/off switch; A pure water outlet pipe, one end of the pure water outlet pipe is connected to the flushing pipeline, the other end of the pure water outlet pipe is connected to the pure water outlet pipe and is located between the reverse osmosis filter element and the built-in between water storage containers; A one-way valve, the one-way valve is arranged on the pure water outlet branch pipe and only allows the water in the pure water outlet pipe to flow to the flushing pipeline through the pure water outlet branch pipe; A flushing control valve, the flushing control valve is arranged on the flushing pipeline and is located between the pure water outlet branch pipe and the raw water inlet pipe; A controller, the controller communicates with the on-off switch, the water inlet control valve, the waste water ratio control valve, the water pump and the flushing control valve respectively. 2. The water purification system according to claim 1, wherein the controller is an electric control board with a clock module or a photoresistor. 3. The water purification system according to claim 1, further comprising: A primary filter element, the primary filter element is arranged on the raw water inlet pipe and is located between the water source and the water inlet control valve; A pre-filter element, the pre-filter element is arranged on the raw water inlet pipe and is located between the water inlet control valve and the flushing pipeline; A rear filter element is arranged on the pure water outlet pipe and located between the on-off switch and the flushing pipeline. 4. The water purification system according to claim 3, further comprising a booster pump, the booster pump is arranged on the raw water inlet pipe and is located between the water inlet control valve and the pre-filter element , the controller communicates with the booster pump. 5. The water purification system according to claim 3, wherein the primary filter element is a PP cotton filter element, and both the pre-filter element and the post-filter element are activated carbon filter elements. 6 . The water purification system according to claim 1 , wherein the on-off switch is a high-pressure switch or a flow switch and is arranged adjacent to the outlet end of the pure water outlet pipe. 7. The water purification system according to claim 1, wherein the water inlet control valve, the waste water ratio control valve and the flushing control valve are all electromagnetic valves. 8. The water purification system according to any one of claims 1-7, wherein the built-in water storage container comprises: a tank body, the tank body is provided with an opening; a flexible water bag, the flexible water bag is arranged in the tank; a top cover, the top cover is detachably mounted on the tank body to cover the opening, the flexible water bag is connected to the top cover and the top cover is provided with a Internally connected water holes; An upper joint, the upper joint is detachably installed on the top cover and connected to the pure water outlet pipe, and the upper joint is provided with a water channel; A water level detection device, the water level detection device is installed on the top cover and at least a part extends into the flexible water bag. 9. The water purification system according to claim 8, wherein the flexible water bag comprises an environmentally friendly inner layer, a flexible middle layer and a high and low temperature resistant outer layer bonded together. 10. The water purification system according to claim 8, wherein the water level detection device comprises: A central pipe, the central pipe is installed on the top cover and extends into the flexible water bag, one end of the central pipe communicates with the water hole and the central pipe is located in the flexible water bag There are a number of small water holes on the part; a dry reed switch, the dry reed switch is installed on the top cover and adjacent to the central tube; A floating ball, the floating ball is arranged in the central tube so as to move up and down, and the magnetic piece for touching the reed switch is arranged on the floating ball.