阅读说明：本技术 净水系统及净水设备 (Water purification system and water purification unit ) 是由 曹伟 王也 杨旅 柯岩 蔡雪刚 张进 于 2018-08-21 设计创作，主要内容包括：本发明涉及净水领域,公开了一种净水系统及净水设备,所述净水系统包括主管路,所述主管路上依次连接有串联的第一滤芯和第二滤芯,所述主管路上还连接有切换管路,所述切换管路上设置有切换阀门,所述切换管路设置为通过所述切换阀门的开关使得所述主管路内的水在依次经过所述第一滤芯和所述第二滤芯进行过滤的第一工作模式与仅经过所述第一滤芯和所述第二滤芯中的一者进行过滤的第二工作模式之间切换。本发明提供的净水系统及净水设备,在保证水质的前提下能够最大化出水量,能够更好地满足用户需求。(The invention relates to the field of water purification, and discloses a water purification system and water purification equipment, wherein the water purification system comprises a main pipeline, a first filter element and a second filter element which are connected in series are sequentially connected onto the main pipeline, a switching pipeline is also connected onto the main pipeline, a switching valve is arranged on the switching pipeline, and the switching pipeline is set to switch between a first working mode that water in the main pipeline is sequentially filtered by the first filter element and the second filter element and a second working mode that water is only filtered by one of the first filter element and the second filter element through the switch of the switching valve. The water purification system and the water purification equipment provided by the invention can maximize the water yield on the premise of ensuring the water quality, and can better meet the user requirements.)

1. The utility model provides a water purification system, its characterized in that, water purification system includes the main line, first filter core (1) and second filter core (2) of series connection have connected gradually on the main line, still be connected with the switching pipeline on the main line, be provided with the switching valve on the switching pipeline, the switching pipeline sets up to pass through the switch of switching valve makes water in the main line is in process in proper order first filter core (1) with second filter core (2) carry out filterable first mode and only pass through switch between first filter core (1) and one of second filter core (2) carries out filterable second mode.

2. Water purification system according to claim 1, wherein the switching line comprises a first switching line (31), a first end of the first switching line (31) being connected to the main line connecting the water inlet of the first filter cartridge (1) and a second end of the first switching line (31)) being connected to the main line connecting the purified water outlet of the first filter cartridge (1), the switching valve comprising a first switching valve (41) mounted on the first switching line (31).

3. The water purification system according to claim 1, wherein the switching line comprises a second switching line (32), a first end of the second switching line (32) being connected with the main line connecting the water inlet of the second filter cartridge (2) and a second end of the second switching line (32) being connected with the main line connecting the purified water outlet of the second filter cartridge (2), the switching valve comprising a second switching valve (42) mounted on the second switching line (32).

4. The water purification system according to claim 1, wherein the switching line comprises a first switching line (31), a first end of the first switching line (31) being connected to the main line connecting the water inlet of the first filter cartridge (1) and a second end of the first switching line (31)) being connected to the main line connecting the purified water outlet of the first filter cartridge (1);

the switching pipeline further comprises a second switching pipeline (32), a first end of the second switching pipeline (32) is connected with the main pipeline connected with the water inlet of the second filter element (2), and a second end of the second switching pipeline (32) is connected with the main pipeline connected with the purified water outlet of the second filter element (2);

the switching valves comprise a first switching valve (31) arranged on the first switching pipeline (31) and a second switching valve (42) arranged on the second switching pipeline (32); wherein a first position at which a second end of the first switching conduit (31) is connected to the main conduit is located downstream of a second position at which a first end of the second switching conduit (32) is connected to the main conduit, and a third switching valve (43) is provided on the main conduit between the first and second positions.

5. Water purification system according to any one of claims 1-4, wherein the first filter cartridge (1) and the second filter cartridge (2) are further provided with a waste water outlet, respectively;

a waste water outlet of the first filter element (1) is connected with a first waste water outlet pipeline (L1), and a first flow regulating valve (F1) is installed on the first waste water outlet pipeline (L1);

the waste water outlet of the second filter element (2) is connected with a second waste water outlet pipeline (L2), and a second flow regulating valve (F2) is installed on the second waste water outlet pipeline (L2).

6. The water purification system of claim 5, wherein the second waste water outlet line (L2) is merged into the same line downstream of the first flow regulating valve (F1) as the first waste water outlet line (L1) is downstream of the second flow regulating valve (F2).

7. Water purification system according to any one of claims 1-4, comprising a pre-filter cartridge (5) upstream of the first filter cartridge (1).

8. Water purification system according to claim 7, wherein a switching valve (6) and a booster pump (7) are arranged in sequence on the main pipe between the pre-filter element (5) and the first filter element (1) in the flow direction of the water.

9. Water purification system according to any one of claims 1-4, further comprising a post-filter cartridge (8) downstream of the second filter cartridge (2).

10. A water purification apparatus, characterized in that it comprises a water purification system according to any one of claims 1-9.

Technical Field

The invention relates to the field of water purification, in particular to a water purification system and water purification equipment.

Background

In order to solve the problem of healthy drinking water, various water purifying devices are produced in the market in recent years. Among them, the RO water purifier (or RO reverse osmosis water purifier) is a water purifier that performs water filtration using the principle of reverse osmosis technology. Ions in water on both sides of the RO membrane are slowly diffused to an equilibrium state depending on the characteristics of the RO membrane, and when the shutdown time exceeds two hours, ions in concentrated water before the RO membrane and ions in purified water after the RO membrane approach an equilibrium state. Because the capacity of pure water in the ordinary 400G RO membrane filter element is about 500mL (generally, the larger the flux is, the more the pure water in the filter element is), and the quantity of water taken by a user when the water purifier is opened every time is about 500mL, the water flowing out of the water purifier when the water is produced every time is the part of the pure water at the rear end of the RO membrane, the problem that the TDS (total dissolved solids) of the first cup of water is higher due to ion diffusion after the water purifier is stopped for a period of time is caused, the water quality cannot reach the required requirements, and the use of the user is influenced. In addition, the desalination rate of the RO membrane of the large-flux water purifier in the existing market is generally 90%, and in an area with very poor water quality (higher TDS of tap water), the purity of purified water prepared by the single-stage RO membrane water purifier is not very high, and the use requirement of a user cannot be met. In addition, if a double-stage series RO membrane system is used in an area with better water quality, the water outlet flow is lower, and users with large water usage requirements cannot be met.

Therefore, there is a need to design a water purification system that maximizes water output while ensuring water quality.

Disclosure of Invention

The invention aims to solve the problem that the water quality cannot be guaranteed or the water yield is low in the prior art, and provides a water purification system which can maximize the water yield on the premise of guaranteeing the water quality.

Another object of the present invention is to provide a water purifying apparatus including the above water purifying system.

In order to achieve the above object, in one aspect, the present invention provides a water purification system, which includes a main pipeline, a first filter element and a second filter element connected in series are sequentially connected to the main pipeline, a switching pipeline is further connected to the main pipeline, a switching valve is disposed on the switching pipeline, and the switching pipeline is configured to switch water in the main pipeline between a first operating mode in which the water is sequentially filtered by the first filter element and the second filter element and a second operating mode in which the water is only filtered by one of the first filter element and the second filter element by opening and closing the switching valve.

In the above technical solution, when the water purification system is in a first operating mode in which the water purification system sequentially filters through the first filter element and the second filter element, since ion diffusion between concentrated water (wastewater) in the first filter element and purified water is limited to the inside of the first filter element and does not substantially diffuse into the second filter element, the problem of a high TDS of the first cup of water flowing out of the outlet of the main pipeline can be solved, and after the water purification system operates in the first operating mode for a set time (for example, 1 minute, which can be adjusted according to data of water quality tests) without requiring an ultra-high purity purification effect or in a region with good water quality (water in the region is generally filtered by one filter element, the water purification system can be switched from the first operating mode to a second operating mode in which water entering from the water inlet of the main pipeline is filtered only through one of the first filter element and the second filter element by switching the switch of the switch valve) In the mode, the water quality can be ensured, the problem of small water yield caused by the serial connection of the first filter element and the second filter element is solved, and the use requirement of large water quantity can be met; in addition, in the area that quality of water is relatively poor, can use first filter core and second filter core series connection always to guarantee that quality of water satisfies the demands. The water purification system disclosed by the invention can maximize the water yield on the premise of ensuring the water quality, and can better meet the user requirements.

Preferably, the switching pipeline comprises a first switching pipeline, a first end of the first switching pipeline is connected with the main pipeline connected with the water inlet of the first filter element, a second end of the first switching pipeline is connected with the main pipeline connected with the purified water outlet of the first filter element, and the switching valve comprises a first switching valve arranged on the first switching pipeline.

Preferably, the switching pipeline comprises a second switching pipeline, a first end of the second switching pipeline is connected with the main pipeline connected with the water inlet of the second filter element, a second end of the second switching pipeline is connected with the main pipeline connected with the purified water outlet of the second filter element, and the switching valve comprises a second switching valve arranged on the second switching pipeline.

Preferably, the switching pipeline comprises a first switching pipeline, a first end of the first switching pipeline is connected with the main pipeline connected with the water inlet of the first filter element, and a second end of the first switching pipeline is connected with the main pipeline connected with the purified water outlet of the first filter element; the switching pipeline further comprises a second switching pipeline, a first end of the second switching pipeline is connected with the main pipeline connected with the water inlet of the second filter element, and a second end of the second switching pipeline is connected with the main pipeline connected with the purified water outlet of the second filter element; the switching valves comprise a first switching valve arranged on the first switching pipeline and a second switching valve arranged on the second switching pipeline; the first position where the second end of the first switching pipeline is connected with the main pipeline is located at the downstream of the second position where the first end of the second switching pipeline is connected with the main pipeline, and a third switching valve is arranged on the main pipeline between the first position and the second position.

Preferably, the first filter element and the second filter element are respectively provided with a waste water outlet; a wastewater outlet of the first filter element is connected with a first wastewater outlet pipeline, and a first flow regulating valve is installed on the first wastewater outlet pipeline; and a wastewater outlet of the second filter element is connected with a second wastewater outlet pipeline, and a second flow regulating valve is installed on the second wastewater outlet pipeline.

Preferably, the second waste water outlet line is merged into the same line downstream of the first flow regulating valve as the first waste water outlet line downstream of the second flow regulating valve.

Preferably, the water purification system comprises a pre-filter element upstream of the first filter element.

Preferably, a switch valve and a booster pump are sequentially arranged on the main pipeline between the preposed filter element and the first filter element along the flowing direction of water.

Preferably, the water purification system further comprises a post-filter downstream of the second filter.

The invention provides a water purifying device, which comprises the water purifying system.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

Fig. 1 is a partial structural schematic view of a water purification system according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of a water purification system according to a first embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of a water purification system according to a second embodiment of the present invention;

fig. 4 is a schematic structural view of a water purification system according to a third embodiment of the present invention.

Description of the reference numerals

1 first filter element 2 second filter element

31 first switching line 32 second switching line

41 first switching valve 42 second switching valve

43 third switching valve 5 front filter element

6 switch valve 7 booster pump

8 postposition filter element 9 flow switch

L1 first waste water outlet line L2 second waste water outlet line

L4 water outlet pipeline of L3 water inlet pipeline

F1 first flow control valve F2 second flow control valve

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.

The invention provides a water purification system, which comprises a main pipeline, wherein a first filter element 1 and a second filter element 2 which are connected in series are sequentially connected onto the main pipeline, a switching pipeline is also connected onto the main pipeline, a switching valve is arranged on the switching pipeline, and the switching pipeline is set to switch water in the main pipeline between a first working mode in which the water is sequentially filtered by the first filter element 1 and the second filter element 2 and a second working mode in which the water is only filtered by one of the first filter element 1 and the second filter element 2 through the switching of the switching valve. Wherein, preferably, the first filter element 1 and the second filter element 2 are RO membrane filter elements, and optionally, the second filter element 2 can be a nanofiltration membrane. It will be appreciated that the first cartridge 1 and the second cartridge 2 may also be other filter membranes.

In the above technical solution, as shown in fig. 1, when the water purification system is in a first operation mode in which the water purification system sequentially passes through the first filter element 1 and the second filter element 2 for filtration, since ion diffusion between the concentrated water (wastewater) in the first filter element 1 and the purified water is limited to the inside of the first filter element 1 and does not substantially diffuse into the second filter element 2, the problem of high TDS of the first cup of water flowing out of the outlet of the main pipeline can be solved, and when the ultra-high purity purification effect is not required or in a region with good water quality (water in the region is generally filtered by one filter element to meet the purification requirement), after the water purification system operates in the first operation mode for a set time (for example, 1 minute, which can be adjusted according to data for testing water quality), the switching pipeline can switch the water purification system from the first operation mode to the mode by switching the switch of the switching valve such that the water entering from the water inlet of the main pipeline only passes through the first filter element 1 and the second filter element 2 In the second working mode, water quality can be guaranteed, the problem of small water yield caused by the fact that the first filter element 1 and the second filter element 2 are connected in series for use is solved, and the use requirement of large water quantity can be met; in addition, in the area with poor water quality, the first filter element 1 and the second filter element 2 can be connected in series for use all the time to ensure that the water quality meets the requirements. The water purification system disclosed by the invention can maximize the water yield on the premise of ensuring the water quality, and can better meet the user requirements.

Wherein, can switch over the water purification system by making the water in the main line pass through in proper order first mode that first filter core 1 and second filter core 2 carry out filterable to making the water in the main line only pass through first filter core 1 or only pass through the setting mode of the switching pipeline and the switching valve of second mode that one in the second filter core 2 carries out filterable but following three kinds:

first embodiment

As shown in fig. 2, the switching pipeline includes a first switching pipeline 31, a first end of the first switching pipeline 31 is connected to the main pipeline connected to the water inlet of the first filter element 1, a second end of the first switching pipeline 31 is connected to the main pipeline connected to the purified water outlet of the first filter element 1, and the switching valve includes a first switching valve 41 installed on the first switching pipeline 31. Therefore, when the first switching valve 41 disconnects the first switching pipeline 31, water in the main pipeline can be filtered by sequentially passing through the first filter element 1 and the second filter element 2, and the water purification system is in a first working mode; when the first switching valve 41 connects the first switching pipeline 31, the water in the main pipeline can be filtered only by the second filter element 2, and the water purification system is in the second working mode.

Second embodiment

As shown in fig. 3, the switching pipeline includes a second switching pipeline 32, a first end of the second switching pipeline 32 is connected to the main pipeline connected to the water inlet of the second filter element 2, a second end of the second switching pipeline 32 is connected to the main pipeline connected to the purified water outlet of the second filter element 2, and the switching valve includes a second switching valve 42 installed on the second switching pipeline 32. When the second switching valve 42 disconnects the second switching pipeline 32, the water in the main pipeline can be filtered by passing through the first filter element 1 and the second filter element 2 in sequence, and the water purification system is in a first working mode; when the second switching valve 42 connects the second switching pipeline 32, the water in the main pipeline can be filtered only by the first filter element 1, and the water purification system is in the second working mode.

Third embodiment

As shown in fig. 4, the switching pipeline includes a first switching pipeline 31, a first end of the first switching pipeline 31 is connected to the main pipeline connected to the water inlet of the first filter element 1, and a second end of the first switching pipeline 31 is connected to the main pipeline connected to the purified water outlet of the first filter element 1; the switching pipeline further comprises a second switching pipeline 32, a first end of the second switching pipeline 32 is connected with the main pipeline connected with the water inlet of the second filter element 2, and a second end of the second switching pipeline 32 is connected with the main pipeline connected with the purified water outlet of the second filter element 2; the switching valves include a first switching valve 31 installed on the first switching line 31, a second switching valve 42 installed on the second switching line 32; wherein a first position at which the second end of the first switching pipe 31 is connected to the main pipe is located downstream of a second position at which the first end of the second switching pipe 32 is connected to the main pipe, and a third switching valve 43 is disposed on the main pipe between the first position and the second position. When the first switching valve 41 makes the first switching pipeline 31 not communicated, the second switching valve 42 makes the second switching pipeline 32 not communicated, and the third switching valve 43 makes the main pipeline between the first filter element 1 and the second filter element 2 communicated, the water in the main pipeline can be filtered by the first filter element 1 and the second filter element 2 in sequence, and the water purification system is in a first working mode; when the first switching valve 41 connects the first switching pipeline 31, the second switching valve 42 connects the second switching pipeline 32, and the third switching valve 43 does not connect the main pipeline between the first filter element 1 and the second filter element 2, the first filter element 1 and the second filter element 2 can be used in parallel, so that part of water in the main pipeline is only filtered by the first filter element 1, and the other part of water in the main pipeline is only filtered by the second filter element 2, and the water purification system is in a second working mode.

In the three embodiments, when the water purification system is in the first working mode in which water in the main pipeline is sequentially filtered by the first filter element 1 and the second filter element 2, namely the first filter element 1 and the second filter element 2 are connected in series for use, the purification effect is good, the purification degree of water can be effectively improved, and the problem that the TDS of the primary cup of water is higher is solved; when the water system is in a second working mode that water in the main pipeline is filtered only by one of the first filter element 1 and the second filter element 2, namely only the first filter element 1 or only the second filter element 2 is used or the first filter element and the second filter element 2 are connected in parallel, the flow rate of the outlet water of the purified water can be increased, and the requirement of a user with a large water volume is met.

As shown in fig. 1 to 4, in order to discharge the concentrated water in the first filter element 1 and the second filter element 2 in time, the first filter element 1 and the second filter element 2 are preferably provided with a waste water outlet respectively; a waste water outlet of the first filter element 1 is connected with a first waste water outlet pipeline L1, and a first flow regulating valve F1 is installed on the first waste water outlet pipeline L1; and a waste water outlet of the second filter element 2 is connected with a second waste water outlet pipeline L2, and a second flow regulating valve F2 is installed on the second waste water outlet pipeline L2. In addition, when the first filter element 1 and the second filter element 2 are used in series, since the recovery rate (i.e. the ratio of pure water to water inflow) of the second filter element 2 is greater than that of the first filter element 1, that is, the amount of concentrated water generated in the second filter element 2 is small, in order to prevent the pure water outflow of the main pipeline from being too small, the opening degree of the second flow regulating valve F2 can be properly adjusted to be small; when the first filter element 1 and the second filter element 2 are used in parallel, the first flow control valve F1 and the second flow control valve F2 may be adjusted to the same opening degree in order to keep the first filter element 1 and the second filter element balanced during the filtration process.

In order to ensure that the first flow control valve F1 can independently control the connection and disconnection of the first wastewater outlet line L1, and the second flow control valve F2 can independently control the connection and disconnection of the second wastewater outlet line L2, while minimizing the amount of lines used, thereby simplifying the structure and reducing the cost, it is preferable that the second wastewater outlet line L2 is merged into the same line downstream of the first flow control valve F1 as the first wastewater outlet line L1 is downstream of the second flow control valve F2.

As shown in fig. 2, 3 and 4, in order to remove large particle impurities from the water and prevent the large particle impurities from entering downstream components (such as a switching valve and a switching valve described below) and affecting the normal operation of the components, it is preferable that the water purification system includes a pre-filter 5 located upstream of the first filter element 1, a water inlet of the pre-filter 5 is connected to a water inlet line L3, and a water outlet of the pre-filter 5 is connected to the water inlet of the first filter element 2 through the main line 1. Wherein, the preposed filter element 5 can be PP cotton, activated carbon and the like.

Further preferably, a switch valve 6 and a booster pump 7 are sequentially arranged on the main pipeline between the front filter element 5 and the first filter element 1 along the flowing direction of water. Wherein the booster pump 7 can be used to increase the flow rate of the water in the main line, and the on-off valve 6 can be closed to ensure that the components located downstream thereof (e.g. the booster pump) are no longer subjected to the water pressure.

In addition, the first, second, and third switching valves 41, 42, and 43 and the switching valves may be normally closed solenoid valves.

In order to further improve the water quality, the water purification system preferably further comprises a post-filter cartridge 8 located downstream of the second filter cartridge 2. The water inlet of the rear filter element 8 can be connected with the purified water outlet of the second filter element 2 through the main pipeline, and the water outlet of the rear filter element 8 is connected with a water outlet pipeline L4. Wherein, the post-filter element 8 can be activated carbon. In order to control the water output, a flow switch 9 is provided on the water outlet pipe L4, and a faucet can be connected to the water outlet pipe L4 downstream of the flow switch 9. Wherein, the flow switch can be a high-voltage switch.

The invention provides a water purifying device, which comprises the water purifying system. Since the water purification apparatus comprises the water purification system as described above, all or at least part of the technical effects of the water purification system as described above are achieved, and reference is made to the above for details and effects of the more specific technical solution.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.