CN217614028U - A reverse osmosis water purification system that reduces the TDS of the first cup of water - Google Patents

Abstract

The utility model discloses a reverse osmosis water purification system for reducing the TDS of head cup water. The clean water end of (3) is connected to the clean water outlet tap (4) through the pure water pipe (91), the waste water end of the reverse osmosis filter element (3) is connected to the waste water pipe (92) to discharge the waste water, and the system also includes a water tank (5), the water tank (5) is connected to the clean water end of the reverse osmosis filter element (3) through the second pure water pipe (93), and the water tank (5) is also connected to the booster pump ( 2) Connect so that the water in the water tank (5) can enter the concentrated water end of the reverse osmosis filter element (3) through the booster pump. The reverse osmosis water purification system for reducing the TDS of the first cup water disclosed by the utility model not only solves the problem of high TDS of the first cup water, but also has many advantages such as high safety and long service life of the filter element.

Description

A reverse osmosis water purification system that reduces the TDS of the first cup of water

technical field

The utility model relates to a reverse osmosis water purification system for reducing the TDS of first cup water, belonging to the technical field of water purification.

Background technique

At present, large-flux reverse osmosis water purifiers above 400G generally have the problem that the TDS of the first cup of water is too high after a certain period of standby time.

This is because after waiting for a certain period of time, the reverse osmosis membrane will have a slow natural osmosis phenomenon, resulting in a high TDS on the water purification side of the reverse osmosis membrane, and the corresponding salinity and hardness will be high, so that the first cup of water cannot reach the nominal value. The desalination rate is high, and the final purified water still has scale when the water is boiled.

In addition, since the surface of the reverse osmosis membrane is not washed for a long time, it is easy to scale, and the service life is not ideal.

Therefore, it is necessary to study a water purification system to effectively reduce the TDS of the first cup of water and improve the service life of the reverse osmosis membrane.

Utility model content

In order to overcome the above problems, the inventors have conducted in-depth research and proposed a reverse osmosis water purification system for reducing the TDS of the first cup water, including a water inlet valve 1, a booster pump 2 and a reverse osmosis filter element 3 connected in sequence through pipelines , the clean water end of the reverse osmosis filter element 3 is connected to the clean water outlet faucet 4 through the pure water pipe 91, and the waste water end of the reverse osmosis filter element 3 is connected to the waste water pipe 92 to discharge the waste water,

Further, the system also includes a water tank 5, the water tank 5 is connected to the water purification end of the reverse osmosis filter element 3 through the second pure water pipe 93 to store the pure water purified by the reverse osmosis filter element 3, and the water tank 5 also passes through the reverse osmosis filter element 3. The flushing pipe 94 is connected to the booster pump 2 , so that the water in the water tank 5 can enter the concentrated water end of the reverse osmosis filter element 3 through the booster pump.

In a preferred embodiment, a water tank replenishing valve 931 is provided on the second pure water pipe 93 to control the conduction state of the second pure water pipe 93 .

In a preferred embodiment, a flushing check valve 941 is provided on the flushing pipe 94 so that the water flow can only flow from the water tank 5 to the booster pump 2 .

In a preferred embodiment, a waste water valve 921 is provided on the waste water pipe 92 for controlling the flow of water in the waste water pipe 92 .

In a preferred embodiment, a pre-filter element 101 is provided at the front end of the water inlet valve 1 for filtering impurities in the water.

In a preferred embodiment, a water level sensor is provided on the water tank 5 for detecting the water level in the water tank 5 .

In a preferred embodiment, a vent is provided on the water tank 5 .

In a preferred embodiment, the ventilation port includes an air inlet and an exhaust port, and an air inlet check valve 51 is provided on the air inlet, so that the water in the water tank 5 cannot flow out from the air inlet, and the exhaust port is provided with an air inlet one-way valve 51. An exhaust one-way valve 52 is provided on the air port for discharging the water in the water tank 5 .

In a preferred embodiment, the vent is arranged on the top of the water tank 5 .

In a preferred embodiment, the reverse osmosis filter element 3 may have multiple, and the multiple reverse osmosis filter elements 3 are connected in parallel with each other.

The reverse osmosis water purification system for reducing the TDS of the first cup water provided by the utility model has the following beneficial effects:

(1) Solved the problem of high TDS of the first cup of water;

(2) No pressure tank is used, and the system is safer;

(3) The protection effect of the reverse osmosis filter element is good, and the filter element has a long service life.

Description of drawings

FIG. 1 shows a schematic structural diagram of a reverse osmosis water purification system for reducing the TDS of head cup water according to a preferred embodiment of the present invention.

Description of reference numbers:

1-water inlet valve;

101-Pre-filter;

2- booster pump;

3- reverse osmosis filter element;

4- Water purification faucet;

5 - water tank;

51- Intake check valve;

52-exhaust check valve;

91 - pure water pipe;

92 - Waste water pipe;

93 - the second pure water pipe;

94 - flushing tube;

921 - Wastewater valve;

931 - water tank fill valve;

941 - Flush check valve.

Detailed ways

The present utility model will be described in further detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer.

Therein, although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

The utility model provides a reverse osmosis water purification system for reducing the TDS of head cup water, comprising a water inlet valve 1, a booster pump 2 and a reverse osmosis filter element 3 which are connected in sequence through pipelines,

The reverse osmosis filter element 3, also known as the RO membrane filter element, is one of the commonly used components of water purifiers. It has a concentrated water end, a purified water end and a waste water end, wherein the concentrated water side is the water to be purified, and the purified water side is the purified water. Pure water, the waste water side is the waste water produced in the purification process.

In the present invention, the specific structure or model of the reverse osmosis filter element 3 is not particularly limited, and it can be any known reverse osmosis filter element.

Further, the clean water end of the reverse osmosis filter element 3 is connected to the clean water outlet faucet 4 through the pure water pipe 91, and the waste water end of the reverse osmosis filter element 3 is connected to the waste water pipe 92 to discharge the waste water, as shown in FIG. 1 .

Further, the system also includes a water tank 5, which is connected to the water purification end of the reverse osmosis filter element 3 through the second pure water pipe 93 to store the pure water purified by the reverse osmosis filter element 3, so that the purified water can flow into the water tank 5. The water tank 5 is also connected to the booster pump 2 through the flushing pipe 94, so that the water in the water tank 5 can enter the concentrated water end of the reverse osmosis filter element 3 through the booster pump.

In the present invention, the water tank 5 is arranged to collect clean water, and after the reverse osmosis filter element 3 is filtered, the reverse osmosis filter element 3 is cleaned by the clean water in the water tank 5, thereby reducing the TDS value of the concentrated water end of the reverse osmosis filter element 3, In order to solve the problem of high TDS value of the first cup of water.

In a preferred embodiment, a water tank replenishment valve 931 is provided on the second pure water pipe 93 to control the conduction state of the second pure water pipe 93, so that the amount and time of pure water flowing into the water tank 5 are controllable , when the user opens the clean water outlet faucet 4, the water tank replenishment valve 931 is closed, and the clean water generated by the reverse osmosis filter element 3 is supplied to the user to improve the water outlet speed; when the user closes the clean water outlet faucet 4, the water tank The water replenishment valve 931 is opened, and the clean water generated by the reverse osmosis filter element 3 flows into the water tank 5 for cleaning the reverse osmosis filter element 3 .

In a preferred embodiment, a flushing check valve 941 is provided on the flushing pipe 94 so that the water flow can only flow from the water tank 5 to the booster pump 2, so as to prevent unpurified water from flowing back into the water tank.

In a preferred embodiment, a waste water valve 921 is provided on the waste water pipe 92 to control the flow rate of water in the waste water pipe 92, and the waste water discharge volume is adjusted through the waste water valve 921, so as to achieve the control of the desalination ratio of the reverse osmosis filter element 3. Effect.

Preferably, the other end of the waste water pipe 92 is connected to the sewer, and the waste water is directly discharged into the sewer.

In a preferred embodiment, a pre-filter element 101 is provided at the front end of the water inlet valve 1 , and the large-particle impurities in the tap water are preliminarily filtered through the pre-filter element 101 to protect the reverse osmosis filter element 3 .

According to the present invention, the pre-filter element 101 can be any filter element for preliminary filtration of tap water, such as one or more of activated carbon filter element, PP cotton filter element, polypropylene melt-blown filter element, and coconut shell particle filter element.

In a preferred embodiment, a water level sensor is provided on the water tank 5, and the water level sensor is used to detect the amount of purified water in the water tank 5, so as to avoid too much or too little water in the water tank 5.

In a preferred embodiment, the water tank 5 is not a pressure tank. The traditional water storage type water purifier is often provided with a pressure tank for storing purified water. Different from the traditional storage water purifier, the utility model The water purification system provided in this paper belongs to the way of straight out purified water, that is, the user needs to filter the purified water instead of filtering and storing it in advance. For pressure tanks, the cost of ordinary water tanks is lower and the safety performance is higher.

Further preferably, a vent is provided on the water tank 5 to maintain the pressure balance inside and outside the water tank 5 when clean water flows in or out, so as to avoid a pressure difference between the inside and outside of the water tank 5, so that the long-term pressure of the water tank 5 causes water leakage or potential safety hazards.

In a more preferred embodiment, the ventilation port includes an air inlet and an exhaust port, and an air inlet one-way valve 51 is provided on the air inlet, so that the water in the water tank 5 cannot flow out from the air inlet, and the An exhaust one-way valve 52 is provided on the exhaust port for discharging the water in the water tank 5. Preferably, one end of the exhaust one-way valve 52 is connected to the sewer, and the exhaust one-way valve 52 prevents the water in the sewer from flowing back to the water tank. 5, the pure water in the water tank 5 is polluted.

The above settings further ensure the safety of the system. When the water level sensor is abnormal and causes too much purified water in the water tank 5, the purified water can only flow out from the exhaust one-way valve 52 to the sewer to avoid water leakage in the system.

In a preferred embodiment, the vent is arranged on the top of the water tank 5 .

According to a preferred embodiment of the present invention, the reverse osmosis filter element 3 may have multiple, and the multiple reverse osmosis filter elements 3 are connected in parallel with each other to increase the water purification capacity per unit time of the system and provide users with a larger flow of purified water .

The parallel connection means that the concentrated water ends of the multiple reverse osmosis filter elements 3 are connected to each other, the pure water sections of the multiple reverse osmosis filter elements 3 are connected to each other, and the waste water ends of the multiple reverse osmosis filter elements 3 are connected to each other.

According to a preferred embodiment of the present invention, the system works as follows:

Normal working mode:

The user opens the clean water outlet faucet 4, the water inlet valve 1 is opened, the booster pump 2 is started, the water tank replenishment valve 931 is closed, the tap water flows into the booster pump 2 through the water inlet valve 1, and then enters the reverse osmosis filter element after being pressurized by the booster pump 2. 3. The water is purified by the reverse osmosis filter element 3, the purified pure water flows out from the water purification tap 4, and the waste water is discharged into the sewer through the waste water pipe 92.

Pure water washing process:

The user closes the clean water outlet faucet 4, opens the water inlet valve 1 and the water tank replenishment valve 931, continues to start the booster pump 2 to produce water, and replenishes the water tank 5 until the water level sensor in the water tank 5 detects the water full signal, and closes the water inlet valve. 1. The water tank replenishment valve 931, open the flushing check valve 941, press the pure water in the water tank 5 into the concentrated water end of the reverse osmosis filter element 3 through the booster pump 2, and pass the high-concentration waste water in the reverse osmosis filter element 3 through the waste water The pipe 92 is discharged, so that the TDS of the concentrated water end of the reverse osmosis filter element 3 is reduced, and the operation is stopped after an appropriate time; at this time, there is no more high TDS water in the reverse osmosis filter element 3, and after a long time of standby, pure water will not be caused by forward osmosis. Therefore, the next time the user turns on the faucet to use water, the TDS of the first cup of water will be reduced to a reasonable level, so as to avoid the hardness and salinity of the first cup of water exceeding the standard.

Preferably, before replenishing the water tank 5, in order to prevent residual water in the water tank 5, first close the water inlet valve 1 and the water tank replenishment valve 931, and start the booster pump 2 to press the residual water in the water tank 5 into the reverse osmosis filter element 3 first.

The present invention has been described above with reference to the preferred embodiments, but these embodiments are only exemplary and only serve an illustrative role. On this basis, various replacements and improvements can be made to the present invention, which all fall within the protection scope of the present invention.

Claims (7)

1. A reverse osmosis water purification system for reducing the TDS of head cup water, comprising a water inlet valve (1), a booster pump (2), a reverse osmosis filter element (3) and a reverse osmosis filter element (3) connected in sequence through pipelines The clean water end of the filter is connected with the clean water outlet tap (4) through the pure water pipe (91), and the waste water end of the reverse osmosis filter element (3) is connected with the waste water pipe (92) to discharge the waste water, and it is characterized in that, The system further comprises a water tank (5), the water tank (5) is connected to the water purification end of the reverse osmosis filter element (3) through the second pure water pipe (93) to store the pure water purified by the reverse osmosis filter element (3) , the water tank (5) is also connected with the booster pump (2) through the flushing pipe (94), so that the water in the water tank (5) can enter the concentrated water end of the reverse osmosis filter element (3) through the booster pump; The water tank (5) is not a pressure tank; A vent is provided on the water tank (5); The air vent includes an air inlet and an air outlet, an air intake check valve (51) is arranged on the air inlet, so that the water in the water tank (5) cannot flow out from the air inlet, and the air outlet is provided with an air inlet one-way valve (51). an exhaust one-way valve (52) for discharging the water in the water tank (5), and one end of the exhaust one-way valve (52) is connected to the sewer; The vent is arranged on the top of the water tank (5). 2. the reverse osmosis water purification system that reduces head cup water TDS according to claim 1, is characterized in that, A water tank replenishing valve (931) is provided on the second pure water pipe (93) to control the conduction state of the second pure water pipe (93). 3. the reverse osmosis water purification system of reducing head cup water TDS according to claim 1, is characterized in that, A flushing check valve (941) is arranged on the flushing pipe (94) so that the water flow can only flow from the water tank (5) to the booster pump (2). 4. the reverse osmosis water purification system that reduces the head cup water TDS according to claim 1, is characterized in that, A waste water valve (921) is provided on the waste water pipe (92) for controlling the flow of water in the waste water pipe (92). 5. the reverse osmosis water purification system that reduces the head cup water TDS according to claim 1, is characterized in that, A pre-filter (101) is arranged at the front end of the water inlet valve (1) for filtering impurities in the water. 6. the reverse osmosis water purification system that reduces the head cup water TDS according to claim 1, is characterized in that, A water level sensor is provided on the water tank (5) for detecting the water level in the water tank (5). 7. the reverse osmosis water purification system that reduces the head cup water TDS according to claim 1, is characterized in that, The reverse osmosis filter element (3) may have a plurality of reverse osmosis filter elements (3) in parallel with each other to increase the water purification capacity per unit time.

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