CN216367414U - Water purifier - Google Patents

Abstract

The utility model discloses a water purifier, comprising: a filter membrane group, including a membrane element for filtering and purifying raw water, the filter membrane group has a water-making state for performing a filtering function and a flushing state for washing the surface of the membrane element ;Inlet water pipeline, one end is connected to the inlet of the filter membrane group; booster pump, installed in the water inlet pipeline, used to pressurize the raw water; raw water quality detection element, installed in the water inlet pipeline, used to detect the water in the water inlet pipeline The water quality parameters of the raw water; the controller is electrically connected with the raw water quality detection element, and is used to receive the water quality parameters and adjust the time and duration of the filter membrane group switching from the water production state to the flushing state according to the water quality parameters. The water purifier provided by the utility model can adjust the flushing time according to the water quality, ensure the flushing effect of the membrane element, and reduce the risk of wasting water resources.

Description

a water purifier

technical field

The utility model belongs to the technical field of water purification equipment, in particular to a water purifier.

Background technique

With the improvement of people's requirements for drinking water quality, water purifiers are becoming more and more popular. It has almost become a must-have product for water use occasions such as homes and offices.

The water purifier usually includes a filter element for filtration. The core filter element of the filter element on the market has two types, one is a reverse osmosis filter membrane, and the other is an ultrafiltration membrane. In order to prolong the service life of filtration membrane elements such as reverse osmosis or ultrafiltration, they need to be flushed. At present, the flushing method used by the water purifiers on the market is a fixed flushing time, which is relatively traditional. Due to the large differences in water quality around the world, a fixed flushing time is used in areas with poor water quality. Due to heavy membrane pollution, the expected flushing effect may not be achieved due to insufficient flushing time. Correspondingly, in areas with good water quality, membrane pollution may It is lighter, and the fixed flushing time is longer, which may cause waste of water resources.

Utility model content

Therefore, the technical problem to be solved by the present invention is to provide a water purifier, which can adjust the flushing time according to the water quality, ensure the flushing effect of the membrane element, and reduce the waste of water resources.

In order to solve the above-mentioned technical problems, the utility model provides a water purifier, comprising:

A filtration membrane group, comprising membrane elements for filtering and purifying raw water, the filtration membrane group including a water-producing state for performing a filtering function and a flushing state for flushing the surface of the membrane element;

One end of the water inlet pipeline is communicated with the inlet of the filter membrane group;

a booster pump, arranged in the water inlet pipeline, for boosting the raw water;

The raw water quality detection element is arranged on the water inlet pipeline and is used to detect the water quality parameters of the raw water in the water inlet pipeline;

A controller, electrically connected to the raw water quality detection element, is used for receiving the water quality parameter and adjusting the time and duration of the filter membrane group entering the flushing state according to the water quality parameter.

Optionally, the membrane element is a reverse osmosis membrane.

Optionally, the filter membrane group includes a concentrated water outlet, the water purifier includes a concentrated water pipeline with one end communicating with the concentrated water outlet, and a flushing valve is provided on the concentrated water pipeline.

Optionally, when the filter membrane group is in the flushing state, the flushing valve is in an open state; when the filtering membrane group is in the water producing state, the flushing valve is in a closed state, and the flushing valve is in a closed state. There is also an opening, which allows concentrated water to flow out when the flush valve is in the closed state.

Optionally, the membrane element is an ultrafiltration membrane or a nanofiltration membrane.

Optionally, the raw water quality detection element includes a raw water TDS detection probe.

Optionally, it also includes a pure water pipeline communicated with the pure water outlet of the filter membrane group and a pure water quality detection element arranged on the pure water pipeline, and the pure water quality detection element is used to detect the Quality parameters of the pure water in the pure water pipeline, the water purifier further includes a display element showing the quality parameters of the pure water.

Optionally, the pure water quality detection element includes a pure water TDS detection probe.

Optionally, a pre-filter material is also included, which is arranged in the water inlet pipeline and is located upstream of the booster pump.

Optionally, a water inlet valve is provided on the water inlet pipeline to control the on-off of the water inlet pipeline.

The technical scheme provided by the utility model has the following advantages:

The water purifier provided by the utility model detects the water quality parameter of the raw water in the water inlet pipeline by setting the raw water quality detection element on the water inlet pipeline, and the controller receives the water quality parameter and adjusts the time when the filter membrane group enters the flushing state according to the water quality parameter. The water purifier can flexibly match the flushing time that can achieve the target flushing effect according to the water quality. Under the condition of ensuring the flushing effect, it also reduces the risk of wasting water resources.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings required in the description of the specific embodiments or the prior art. Obviously, the appended drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative work.

1 is a schematic structural diagram of a water purifier provided in Embodiment 1 of the present utility model;

Description of reference numbers:

10-filter membrane group; 11-pre-filter material; 6-high pressure switch; 2-raw water quality detection element; 3-pure water quality detection element; 5-booster pump; 7-water inlet pipeline; 8-concentrated water pipeline ;9-pure water pipeline; V3-flushing valve; S1-check valve; V1-water inlet valve; V2-pure water valve.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. .

In the present utility model, unless otherwise stated, the directional words used such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the components themselves in the vertical direction. , vertical or gravitational direction; similarly, for ease of understanding and description, "inside and outside" refers to the inside and outside of the contour of each component itself, but the above-mentioned orientation words are not used to limit the present invention.

Example 1

This embodiment provides a water purifier, as shown in FIG. 1, which includes a filter membrane group 10, a water inlet pipeline 7, a booster pump 5, a raw water quality detection element 2, a pure water pipeline 9 and a controller (not shown). Shows).

The filter membrane group 10 is used to filter raw water to obtain pure water. Specifically, the filter membrane group includes an inlet, the water outlet of the water inlet pipeline 7 is connected to the inlet of the filter membrane group 10 , and the raw water is input into the filter membrane group 10 through the water inlet pipeline 7 and the inlet of the filter membrane group 10 . The filter membrane group 10 also includes a pure water outlet, which is communicated with the pure water pipeline 9, and the prepared pure water is transported outward through the pure water pipeline 9 for use.

Specifically, the filter membrane group 10 includes membrane elements for filtering and purifying raw water. With the accumulation of water production time, the surface of the membrane element accumulates dirt. In order to ensure the filtration effect of the membrane element, the membrane element needs to be washed regularly to wash away the dirt on the surface and ensure the filtration effect of the membrane element. Therefore, the water purifier is configured with a water production mode for performing a filtering function and a flushing mode for flushing the membrane elements. Correspondingly, in the water production mode, the filtration membrane group 10 is in a water production state performing a filtering function, and in the flushing mode, the filtration membrane group 10 is in a flushing state for rinsing the membrane surface.

However, the flushing mode of the existing water purifier adopts a fixed time, such as accumulating a predetermined time for water production, and starting the flushing for a predetermined time. However, due to the different degrees of contamination of membrane elements by different water quality, the fixed flushing mode will inevitably cause the membrane surface to be unclean or water resources to be wasted.

In this embodiment, a raw water quality detection element 2 is provided on the water inlet pipeline 7 for detecting the water quality parameters of the raw water in the water inlet pipeline 7 . The raw water quality detection element 2 is electrically connected to the controller, and can transmit the detected water quality parameters of the raw water to the controller, and the controller receives the water quality parameters, and adjusts the time and time of the influent flushing state of the filter membrane group 10 according to the water quality parameters. duration. Here, the time and duration of entering the flushing state can be understood as how long it takes to enter the flushing state after the water is produced and how long the flushing continues, which can also be referred to as the time of the flushing state, also known as the flushing time.

Among them, the booster pump 5 is arranged on the water inlet pipeline 7 to pressurize the raw water, so that the water entering the filter membrane group 10 has a certain pressure, so as to ensure the effect of filtering water, making water and flushing.

Specifically, the controller further includes a storage unit for pre-storing the flushing state time (flushing time) corresponding to different water quality parameters. The time of the flushing state corresponding to different water quality parameters is preset in the storage unit. The researchers of the present application conducted experiments on different water quality parameters to obtain the flushing time that can achieve the target flushing effect. The controller selects according to the pre-stored water quality parameters corresponding flushing time. In the embodiments provided in the present application, different flushing times are used for different water quality, a longer flushing time can be used for poor water quality to ensure the flushing effect, and a shorter and less frequent flushing time can be used for better water quality to achieve the target flushing effect at the same time. Do not waste water resources. Therefore, no matter what the water quality parameters are, under the premise of ensuring the flushing effect of the membrane element, the risk of water waste can be reduced.

The raw water quality detection element 2 is used to detect the TDS (Total dissolved solids, abbreviated TDS) of the raw water, which is called total dissolved solids in Chinese, also known as total dissolved solids. The unit of measurement is usually milligrams per liter (mg/L), which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved the water contains and the worse the water quality. Specifically, the raw water quality detection element 2 is a raw water TDS detection probe.

Exemplarily, when the TDS value detected by the raw water TDS detection probe is less than or equal to 300, the flushing time in the flushing state (the time and duration of entering the flushing state) is, accumulatively producing water for 30 minutes and flushing for 30s; If the TDS value is greater than 300 and less than or equal to 500, the flushing time of the flushing mode is 20 minutes of cumulative water production and 30s of flushing; when the TDS value detected by the TDS detection probe of the raw water is greater than 500 and less than or equal to 700, the flushing time of the flushing mode is, each time the water is produced End flushing for 5s; accumulative water production for 30min, flushing for 45s; when the TDS value detected by the raw water TDS detection probe is greater than 700 and less than or equal to 900, the flushing time in flushing mode is 5s after each water production; cumulative water production is 20min, flushing for 45s ; When the TDS value detected by the raw water TDS detection probe is greater than 900, the flushing time of the flushing mode is 10s at the end of each water preparation; the cumulative water preparation is 20min, and the flushing is 45s.

In this specific embodiment, the membrane element is a reverse osmosis membrane, and the corresponding filter membrane group 10 may also be referred to as a reverse osmosis filter membrane group. Please continue to refer to FIG. 1 , the water purifier further includes a concentrated water pipeline 8 , the filter membrane group 10 includes a concentrated water outlet (not shown), and one end of the concentrated water pipeline 8 is communicated with the concentrated water outlet, which is used for the filter membrane group 10 to generate The concentrated water and rinse water are drained. The concentrated water pipeline is provided with a flush valve V3. The flushing valve V3 is opened when the water purifier is in the flushing state, and is used to discharge the flushed water. In this way, the water inlet pipeline 7 and the concentrated water pipeline 8 are connected, and the water inlet pipeline 7 enters the concentrated water of the filter membrane group 10. It is directly discharged from the concentrated water pipeline 8, and the water flow with a certain pressure washes the concentrated water measuring membrane surface of the filter membrane group 10, and takes away the dirt on the membrane surface, which has a cleaning effect.

Specifically, when the filter membrane group 10 is in the flushing state, the flushing valve V3 is in the open state; when the filtering membrane group 10 is in the water producing state, the flushing valve V3 is in the closed state, and the water on the concentrated water side of the filtering membrane group 10 permeates to pure water. On the water side, it is discharged from the pure water pipeline 9 . In order to facilitate the discharge of concentrated water on the concentrated water side, the flush valve V3 is also provided with an opening. When the flush valve V3 is in a closed state and the filter module 10 is in a water-making state, the opening allows the concentrated water generated by the filter module 10 to flow out.

In order to facilitate users to intuitively understand the quality of pure water obtained after filtration. In one embodiment, the water purifier further includes a pure water quality detection element 3 arranged on the pure water pipeline 9, and the pure water quality detection element 3 is used to detect the quality parameters of the pure water in the pure water pipeline 9, The water machine also includes a display element showing the quality parameters of the pure water. Specifically, the pure water quality detection element 3 includes a pure water TDS detection probe.

The pure water pipeline 9 is also provided with a one-way valve S1 , which is used to control the one-way outflow of pure water and prevent the pure water from flowing back to the filter membrane group 10 . The pure water pipeline 9 is also provided with a high pressure switch 6 . Only when the water pressure in the pure water pipeline 9 exceeds a preset threshold, can the high pressure switch 6 be turned on, so that pure water can flow out of the pure water pipeline 9 . Specifically, the high pressure switch 6 is arranged downstream of the one-way valve S1.

The water purifier also includes a pure water valve V2, which is operated by the user to open the pure water pipeline 9, so as to facilitate the extraction of pure water. Specifically, the pure water valve V2 is arranged at the end of the pure water pipeline 9 to control the pure water. The pure water valve V2 may be a solenoid valve or a mechanical valve, as long as it can be opened and closed by a user operation.

In order to facilitate the water inlet control, it is controlled to start the water production mode or start the flushing mode. In one embodiment, the water inlet pipe 7 is provided with a water inlet valve V1 for controlling the on-off of the water inlet pipe 7 .

In one embodiment, the water inlet pipeline 7 is also provided with a pre-filter material 11 for primary filtration of water. The pre-filter material 11 is installed in the water inlet pipeline 7, upstream of the booster pump 5, and is used to filter sediment, rust, and large particulate matter in the tap water. The setting of the pre-filter material can prevent the large amount of precipitated impurities generated in the urban and residential water supply network from causing harm to the human body, and also to the water purifier, as well as the hidden pipes, faucets, plumbing, water heaters, boilers, washing machines, dishwashers and Other water appliances, etc. play a positive role in pre-protection.

In the above-mentioned embodiment, the water inlet valve V1 and the flushing valve V3 are both electric valves, which are electrically connected to the controller, and the controller controls their on-off. Preferably, both the water inlet valve V1 and the flush valve V3 are solenoid valves.

The following briefly describes the process of the water making mode and flushing mode of the water purifier. In the water making mode, the water inlet valve V1 is opened, the booster pump 5 is working, the flushing valve V3 is closed, the pure water valve V2 is opened, and pure water is produced. On the water side, it is discharged from the pure water pipeline 9, and the concentrated water produced during the water making process flows out from the concentrated water pipeline 8 through the opening of the flush valve 3. In the flushing mode, the water inlet valve V1 is opened, the flushing valve V3 is opened, the booster pump 5 works, the pure water valve V2 is closed, and the raw water flows out through the water inlet pipeline 7, the concentrated water side of the membrane element, and the concentrated water pipeline 8 in sequence.

The solution provided in this embodiment matches different flushing times by detecting the quality of the raw water, that is, using different levels of flushing according to different water quality parameters of the raw water. Under the premise of achieving the target cleaning effect, water resources can be saved.

Example 2

As an alternative to Embodiment 1, in Embodiment 2, the membrane element may also be an ultrafiltration membrane. Embodiment 2 is similar to Embodiment 1, and the same structures use the same reference numerals, which will not be repeated, and only the differences will be described below. Referring to Figure 1, when the membrane element is an ultrafiltration membrane, the water purifier does not have a concentrated water pipeline 8, a flush valve V3, a check valve S1 and a high pressure switch 6.

Among them, the ultrafiltration membrane is a polymer semi-permeable membrane used in the ultrafiltration process to separate a certain size of polymer colloid or suspended particles from the solution. With pressure as the driving force, the pore size of the membrane is 1-100nm, which is an asymmetric membrane type. It is suitable for removing colloidal particles and macromolecules, and can separate solutions with a concentration of less than 10%.

In another embodiment, the membrane element can also use a nanofiltration membrane. Nanofiltration membrane is a new type of separation membrane that came out in the late 1980s. Its molecular weight cut-off is between reverse osmosis membrane and ultrafiltration membrane. It is speculated that nanofiltration membrane may have a microporous structure of about 1 nanometer, so it is called "Nanofiltration". Most of the nanofiltration membranes are composite membranes, and the separation layer on the surface is composed of polyelectrolyte, so it has a certain rejection rate of inorganic salts.

Obviously, the above-described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other changes or changes in different forms without creative work, which should all belong to the protection scope of the present invention.

Claims (10)

1. A water purifier, comprising:

the filter membrane group (10) comprises membrane elements for filtering and purifying raw water, and comprises a water making state for performing a filtering function and a flushing state for flushing the surfaces of the membrane elements;

one end of the water inlet pipeline (7) is communicated with an inlet of the filter membrane group (10);

the booster pump (5) is arranged on the water inlet pipeline (7) and is used for boosting the raw water;

the raw water quality detection element (2) is arranged on the water inlet pipeline (7) and is used for detecting the water quality parameters of the raw water in the water inlet pipeline (7);

and the controller is electrically connected with the raw water quality detection element (2) and is used for receiving the water quality parameters and adjusting the time and duration of the filter membrane group (10) entering the flushing state according to the water quality parameters.

2. The water purifier of claim 1, wherein the membrane element is a reverse osmosis membrane.

3. The water purification machine according to claim 2, wherein said group of filtration membranes comprises a concentrate outlet, said machine comprising a concentrate line (8) having one end communicating with said concentrate outlet, said concentrate line being provided with a flush valve (V3).

4. The water purification machine according to claim 3, wherein when said group of filtration membranes (10) is in said flushing condition, said flushing valve (V3) is in an open condition; when the filter membrane group (10) is in the water preparation state, the flushing valve (V3) is in a closed state, an opening is further formed in the flushing valve (V3), and when the flushing valve (V3) is in the closed state, concentrated water flows out through the opening.

5. The water purifier of claim 1, wherein the membrane element is an ultrafiltration membrane or a nanofiltration membrane.

6. The water purification machine according to claim 1, wherein the raw water quality detection element (2) comprises a raw water TDS detection probe.

7. The water purifier according to claim 1, further comprising a pure water line (9) communicating with a pure water outlet of the filter membrane group (10) and a pure water quality detection element (3) provided on the pure water line (9), the pure water quality detection element (3) being configured to detect a quality parameter of pure water in the pure water line (9), the water purifier further comprising a display element displaying the quality parameter of pure water.

8. Water purifier according to claim 7, wherein the pure water quality detection element (3) comprises a pure water TDS detection probe.

9. The water purification machine according to claim 1, further comprising a pre-filter (11) arranged in said water inlet line (7) upstream of said booster pump (5).

10. The water purification machine according to claim 1, wherein a water inlet valve (V1) is arranged on the water inlet pipeline (7) and used for controlling the on-off of the water inlet pipeline (7).

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