CN218951093U

CN218951093U - Reverse osmosis water purification system

Info

Publication number: CN218951093U
Application number: CN202223038998.3U
Authority: CN
Inventors: 张仪; 刘远庆
Original assignee: Hangzhou Deyi Zhijia Co ltd
Current assignee: Hangzhou Deyi Zhijia Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-05-02
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to a reverse osmosis water purification system, and belongs to the field of water purifiers. According to the utility model, a three-way ball valve is connected with a raw water TDS sensor, the raw water TDS sensor is connected with a water inlet pipe of a front filter element, a water outlet pipe of the front filter element is connected with a water inlet electromagnetic valve, the water inlet electromagnetic valve is connected with a booster pump, the booster pump is connected with a water inlet pipe of an RO reverse osmosis filter element, a water outlet pipe of the RO reverse osmosis filter element is connected with a pure water TDS sensor, the pure water TDS sensor is connected with a check valve b, the check valve b is connected with a water inlet pipe of a rear filter element, a water outlet pipe of the rear filter element is connected with a three-way switching valve, the three-way switching valve is connected with a high-pressure switch, the high-pressure switch is connected with a pure water faucet, the three-way switching valve is connected with a current limiting valve, the check valve a is connected with a pipeline between the water inlet electromagnetic valve and the booster pump, and a water outlet pipe of the RO reverse osmosis filter element is connected with a concentrated water throttling electromagnetic valve.

Description

Reverse osmosis water purification system

Technical Field

The utility model relates to a reverse osmosis water purification system, and belongs to the field of water purifiers.

Background

With the development of society, the improvement of the living standard of people is achieved, and consumers attach increasingly importance to the health and the safety of living drinking water, and the water purifier is used as water retreating equipment after entering a household, so that a healthy and safe water source can be provided for users. With the increasing maturity of water purification treatment technology, the large flux reverse osmosis water purifier becomes the first choice of people more and more. However, with the popularization of large-flux reverse osmosis water purifiers in the market, the problem of 'head cup water' also emerges gradually.

The reverse osmosis water purifier is a technology for realizing ultra-high precision filtration by utilizing an artificial semipermeable reverse osmosis membrane, the aperture of the semipermeable reverse osmosis membrane is extremely small and is only between 0.5 and 10nm, water cannot pass through under normal conditions, osmotic filtration treatment can be realized only by pressurizing water on one side of the membrane, no compound is added, high-purity water is obtained, and a purified water machine which can be directly drunk by human beings is produced. The method has the advantages of high water purification efficiency and thorough removal of harmful substances, so that the method becomes a more common mode for preparing purified water.

However, due to the characteristics of the reverse osmosis membrane, namely after the machine stops running, ions on the raw water side slowly permeate to the pure water side due to the forward osmosis principle, so that the TDS value (namely total dissolved solids) of the pure water is increased, and various indexes such as bacteria and heavy metals are still possible to exceed standards. When the system is started at intervals, as the water quality reserved in the machine is poor, the ion concentration is higher, the TDS value is higher, and as a result, the water discharged after the water purifier is placed for a certain time and restarted is incompletely filtered, and at the moment, the water is the aged water, and the influence on a user is as follows: the product is insufficiently filtered, is harmful to human bodies, and affects health after long-term drinking; heating with old water for a long time, the heating body can generate scaling; this phenomenon is known as the head cup water problem.

When the conventional reverse osmosis water purifier in the current market is used, a part of water TDS is usually discharged to recover when the pure water faucet is used for taking water, so that waiting is needed, water waste is caused, and user experience is affected.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the reverse osmosis water purification system with reasonable structural design. The water purification system capable of reducing the TDS value of the first cup of water solves the problem that the TDS of the pure water is too high when the reverse osmosis water purifier is reused after the reverse osmosis water purifier is not used for a long time, and prevents the waste of the pure water caused by repeatedly preparing the pure water.

The utility model solves the problems by adopting the following technical scheme: the reverse osmosis water purification system comprises a three-way ball valve, a raw water TDS sensor, a water inlet electromagnetic valve, a front filter element, a booster pump, a check valve a, a pure water TDS sensor, a check valve b, a flow limiting valve, a three-way switching valve, a high-pressure switch, an RO reverse osmosis filter element, a rear filter element, a concentrated water throttle electromagnetic valve, a pure water tap and a controller, and is characterized in that: the three-way ball valve is connected with a water inlet of the front filter element through a pipeline, the raw water TDS sensor is arranged on the pipeline between the three-way ball valve and the front filter element, a water outlet of the front filter element is connected with the water inlet electromagnetic valve through a pipeline, the water inlet electromagnetic valve is connected with the booster pump through a pipeline, the booster pump is connected with a water inlet of the RO reverse osmosis filter element through a pipeline, a water outlet of the RO reverse osmosis filter element is connected with the check valve b through a pipeline, the pure water TDS sensor is arranged on the pipeline between the water outlet of the RO reverse osmosis filter element and the check valve b, the check valve b is connected with a water inlet of the rear filter element through a pipeline, a water outlet of the rear filter element is connected with the three-way conversion valve through a pipeline, a pure water port of the three-way conversion valve is connected with the pure water tap through a pipeline, a high-pressure switch is arranged on the pipeline between the pure water port and the pure water tap, a return port of the three-way conversion valve is connected with the flow limiting valve through a pipeline, the flow limiting valve is connected with the check valve a through a pipeline, the check valve a is connected with the throttle valve through a pipeline, and the reverse osmosis valve is connected with the pipeline between the throttle valve and the throttle valve b through the pipeline.

Further, the raw water TDS sensor, the pure water TDS sensor, the booster pump, the three-way switching valve and the high-voltage switch are all connected with the controller.

Further, the front filter element comprises PP cotton and an activated carbon filter element, and the rear filter element is an activated carbon filter element.

Further, the raw water TDS sensor is used for detecting the quality of raw water, and the pure water TDS sensor is used for detecting the quality of pure water.

Compared with the prior art, the utility model has the following advantages: the reverse osmosis water purification system is used for a water purifier, after the reverse osmosis water purification system is closed, pure water on the pure water side is flushed on the raw water side through the water return pipeline, the flushed water is discharged, the mixed water TDS value of the raw water side can be reduced, the flushing time is 1min, the ion concentration difference between the raw water side and the pure water side is reduced, and the TDS value lifting rate of the pure water side is reduced.

After the reverse osmosis water purification system stops running for a long time, a waterway leading to a water return pipeline becomes a passage, the water return pipeline works, pure water on the pure water side washes the RO membrane through the water return pipeline, after washing, the old water and concentrated water formed by raw water originally filtered in the pipeline are discharged from a water discharge pipeline of the RO reverse osmosis filter element, when the TDS value of the pure water on the pure water side of the RO reverse osmosis filter element reaches normal, the water return pipeline is closed, the waterway leading to a pure water tap is opened for normal water production, zero old water outlet is achieved, the user can drink fresh pure water at any time, the physical health of the user is ensured, and the problem of head cup water is thoroughly solved.

Drawings

Fig. 1 is a schematic diagram of the connection relationship of a reverse osmosis water purification system according to an embodiment of the present utility model.

In the figure: the three-way ball valve 1, the raw water TDS sensor 2, the water inlet electromagnetic valve 3, the pre-filter element 4, the booster pump 5, the check valve a6, the pure water TDS sensor 7, the check valve b8, the flow limiting valve 9, the three-way switching valve 10, the high-pressure switch 11, the RO reverse osmosis filter element 12, the post-filter element 13, the concentrated water throttling electromagnetic valve 14, the pure water faucet 15, the controller 16, the pure water port 101 and the water return port 102.

Detailed Description

The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.

Examples

Referring to fig. 1, it should be understood that the structures, proportions, sizes, etc. shown in the drawings attached hereto are merely used in conjunction with the disclosure of the present specification and should not be construed as limiting the scope of the present utility model, which is defined by the appended claims, and any structural modifications, proportional changes, or adjustments of size, which may fall within the scope of the present disclosure without affecting the efficacy or achievement of the present utility model. In the meantime, if the terms such as "upper", "lower", "left", "right", "middle" and "a" are used in the present specification, they are merely for convenience of description, but are not intended to limit the scope of the present utility model, and the relative relation changes or modifications are considered to be within the scope of the present utility model without substantial modification of the technical content.

The reverse osmosis water purification system in the embodiment comprises a three-way ball valve 1, a raw water TDS sensor 2, a water inlet electromagnetic valve 3, a front filter element 4, a booster pump 5, a check valve a6, a pure water TDS sensor 7, a check valve b8, a flow limiting valve 9, a three-way conversion valve 10, a high-pressure switch 11, an RO reverse osmosis filter element 12, a rear filter element 13, a concentrated water throttle electromagnetic valve 14, a pure water faucet 15 and a controller 16, wherein the front filter element 4 comprises a PP cotton and an activated carbon filter element, the rear filter element 13 is an activated carbon filter element, the raw water TDS sensor 2 is used for detecting raw water quality, and the pure water TDS sensor 7 is used for detecting pure water quality.

The three-way ball valve 1 is connected with a water inlet of a pre-filter element 4 through a pipeline, the raw water TDS sensor 2 is arranged on the pipeline between the three-way ball valve 1 and the pre-filter element 4, a water outlet of the pre-filter element 4 is connected with the water inlet electromagnetic valve 3 through a pipeline, the water inlet electromagnetic valve 3 is connected with the booster pump 5 through a pipeline, the booster pump 5 is connected with a water inlet of an RO reverse osmosis filter element 12 through a pipeline, a water outlet of the RO reverse osmosis filter element 12 is connected with the check valve b8 through a pipeline, the pure water TDS sensor 7 is arranged on the pipeline between the water outlet of the RO reverse osmosis filter element 12 and the check valve b8, the check valve b8 is connected with a water inlet of a post-filter element 13 through a pipeline, a water outlet of the post-filter element 13 is connected with the three-way switch valve 10 through a pipeline, the pure water 101 of the three-way switch valve 10 is connected with the pure water tap 15 through a pipeline, the high-pressure switch 11 is arranged on the pipeline between the pure water outlet 101 and the pure water tap 15, purified pure water flows out through the pure water tap 15, and the raw water TDS sensor 2, the booster pump 5, the three-way switch 10 and the high-pressure switch 11 are all connected with the controller 16.

The water return port 102 of the three-way switching valve 10 is connected with the flow limiting valve 9 through a pipeline, the flow limiting valve 9 is connected with the check valve a6 through a pipeline, the check valve a6 is connected with a pipeline between the water inlet electromagnetic valve 3 and the booster pump 5 through a pipeline, the concentrated water port of the RO reverse osmosis filter element 12 is connected with the concentrated water throttling electromagnetic valve 14 through a pipeline, the concentrated water is discharged through the water discharge pipeline of the RO reverse osmosis filter element 12 through the concentrated water throttling electromagnetic valve 14, the rear filter element 13 is connected with the booster pump 5 through the three-way switching valve 10, the flow limiting valve 9 and the check valve a6, and the booster pump 5 is connected with the RO reverse osmosis filter element 12 to form a water return pipeline.

The working principle of the device is that tap water enters from a system water inlet pipeline through a three-way ball valve 1, a raw water TDS sensor 2 on the water inlet pipeline detects the water quality water inlet TDS value of the tap water, the tap water reaches a front filter element 4 through a water purifying pipeline to be primarily filtered, then the tap water enters an RO reverse osmosis filter element 12 to be secondarily filtered through pressurization of a water inlet electromagnetic valve 3 and a booster pump 5, and concentrated water formed after the secondary filtration of the tap water is discharged from a water discharge pipeline of the RO reverse osmosis filter element 12 through a concentrated water throttle electromagnetic valve 14; pure water formed after secondary filtration passes through a rear filter element 13 to improve the taste, and then passes through a three-way switching valve 10 and a high-voltage switch 11 to flow out through a pure water tap 15 through a pipeline; the pure water TDS sensor 7 is arranged on a pipeline between the RO reverse osmosis filter element 12 and the rear filter element 13 and used for detecting the quality of pure water, the water return port 102 of the three-way switching valve 10 is normally closed during water production, the pure water port 101 of the three-way switching valve 10 is normally open and connected with the high-voltage switch 11 and the pure water tap 15, the produced pure water flows out through the pure water tap 15, and the water return port 102 of the three-way switching valve 10 is in a normally closed state.

After the pure water faucet 15 of the reverse osmosis water purification system is closed for 1 hour, at the moment, the controller 16 controls the water return port 102 of the three-way conversion valve 10 to be opened, meanwhile, the booster pump 5 is operated, the concentrated water throttle electromagnetic valve 14 is opened, pure water on the pure water side of the RO reverse osmosis filter element 12 is pressurized by the booster pump 5 through the water return pipeline and then washes the raw water side of the RO reverse osmosis filter element 12, and the washed water is discharged through the water discharge pipeline of the RO reverse osmosis filter element 12, so that the TDS value of mixed water on the raw water side can be reduced (lower than the RDS value of the raw water), the washing time is 1min, the ion concentration difference between the raw water side and the pure water side is reduced, and the TDS value lifting rate of the pure water side is reduced.

When the pure water faucet 15 is opened and restarted after the reverse osmosis water purification system stops running for a long time (more than 1.5 hours), at the moment, the high-pressure switch 11 transmits a starting signal to the controller 16, meanwhile, the pure water TDS sensor 7 transmits the water quality condition of the pure water side of the RO reverse osmosis filter element 12, namely a TDS value, to the controller 16, the controller 16 comprehensively judges parameters such as the stop running time and the TDS value of the pure water end, and the like, then the three-way switching valve 10 works to disconnect the pure water port 101 of the three-way switching valve 10, the water return port 102 of the three-way switching valve 10 is opened, a waterway leading to a return water pipeline is formed, the return water pipeline works, pure water (old water with higher TDS value) on the pure water side of the RO reverse osmosis filter element 12 is pressurized through the booster pump 5, the TDS value of the RO reverse osmosis filter element 12 is reduced, after the flushing, concentrated water formed by raw water in the RO reverse osmosis filter element 12 and the pipeline is discharged from the water pipeline of the RO reverse osmosis filter element 12 after being throttled through the concentrated water throttle solenoid valve 14, when the pure water on the pure water side of the RO reverse osmosis filter element 12 reaches the three-way switching valve 10, the pure water faucet 15 can be normally opened, and the drinking water can reach the health condition, and the problem of the drinking water can be completely solved by normal user.

The reverse osmosis water purification system can reduce the TDS value of the head cup water, can solve the problem that a consumer drinks the first cup of aged water when the water purifier is not used, is greatly convenient for the user, does not waste and pours the first cup of water, can drink fresh and healthy good water at any time, and improves the experience of the consumer in using the product.

In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a reverse osmosis water purification system, including tee bend ball valve (1), raw water TDS sensor (2), inlet solenoid valve (3), leading filter core (4), booster pump (5), check valve a (6), pure water TDS sensor (7), check valve b (8), current limiting valve (9), tee bend change over valve (10), high-pressure switch (11), RO reverse osmosis filter core (12), post filter core (13), dense water throttle solenoid valve (14), pure water tap (15) and controller (16), its characterized in that: the three-way ball valve (1) is connected with a water inlet of the pre-filter element (4) through a pipeline, the raw water TDS sensor (2) is arranged on the pipeline between the three-way ball valve (1) and the pre-filter element (4), a water outlet of the pre-filter element (4) is connected with the water inlet electromagnetic valve (3) through a pipeline, the water inlet electromagnetic valve (3) is connected with the booster pump (5) through a pipeline, the booster pump (5) is connected with a water inlet of the RO reverse osmosis filter element (12) through a pipeline, a water outlet of the RO reverse osmosis filter element (12) is connected with the check valve b (8) through a pipeline, the pure water TDS sensor (7) is arranged on the pipeline between a water outlet of the RO reverse osmosis filter element (12) and the check valve b (8), the check valve b (8) is connected with a water inlet of the post-filter element (13) through a pipeline, a water outlet of the post-filter element (13) is connected with the three-way switching valve (10) through a pipeline, a pure water port (101) of the booster pump (5) is connected with a pure water inlet of the RO reverse osmosis filter element (12) through a pipeline, a pure water outlet of the RO reverse osmosis filter element (12) is connected with the water tap (9) through a high-pressure switching valve (9) through a pipeline (9), the check valve a (6) is connected with a pipeline between the water inlet electromagnetic valve (3) and the booster pump (5) through a pipeline, and the concentrated water port of the RO reverse osmosis filter element (12) is connected with the concentrated water throttling electromagnetic valve (14) through a pipeline.

2. The reverse osmosis water purification system of claim 1, wherein: the raw water TDS sensor (2), the pure water TDS sensor (7), the booster pump (5), the three-way switching valve (10) and the high-voltage switch (11) are all connected with the controller (16).

3. The reverse osmosis water purification system of claim 1, wherein: the front filter element (4) comprises PP cotton and an activated carbon filter element, and the rear filter element (13) is an activated carbon filter element.

4. The reverse osmosis water purification system of claim 1, wherein: the raw water TDS sensor (2) is used for detecting raw water quality, and the pure water TDS sensor (7) is used for detecting pure water quality.