Reverse osmosis filter element and water purification equipment

Abstract

The present invention relates to the field of household appliance technology, and discloses a reverse osmosis filter element and a water purification device. The reverse osmosis filter element comprises a filter element housing, a separator, an RO membrane and a bubble water forming mechanism, and a water inlet and a wastewater outlet are arranged on the outer wall of the filter element housing; the separator is arranged inside the filter element housing, and the inside of the filter element housing is divided into an upper chamber and a lower chamber, and a through hole connecting the upper chamber and the lower chamber is arranged on the separator, and the water inlet is connected to the lower chamber; the RO membrane is arranged in the upper chamber, and the water outlet side of the RO membrane is connected to the wastewater outlet; the bubble water forming mechanism comprises a power supply component and an electrode plate, and the electrode plate is arranged in the lower chamber, and a plurality of through holes arranged in an array are arranged on the electrode plate, and the power supply component is electrically connected to the electrode plate. The reverse osmosis filter element not only has a strong cleaning effect on the organic and inorganic pollution on the surface of the RO membrane, but also can penetrate into the membrane pores of the RO membrane for deep cleaning, and also has a good inhibitory effect on bacterial growth.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a reverse osmosis filter element and a water purification device. Background Art

[0002] As people's living standards improve, more and more users begin to pay attention to the health of water use, and water purification equipment has become an indispensable household appliance in the home. Existing water purification equipment usually includes a main line and a filter component arranged on the main line. The water inlet end of the main line is connected to the water source. After the tap water enters the main line from the water inlet end of the main line, it can flow out from the water outlet end of the main line after being filtered by the filter component for use by users. Among them, the filter component includes a pre-filter element and a reverse osmosis filter element. The pre-filter element and the reverse osmosis filter element are connected in series in sequence on the main line, and the pre-filter element is located on the side close to the water inlet end of the main line. The pre-filter element can perform coarse filtration on the tap water. The membrane pores of the reverse osmosis filter element are small, and almost only water molecules are allowed to pass through. Therefore, the reverse osmosis filter element can perform fine filtration on the water filtered by the pre-filter element, so that the pure water used by the user is cleaner. However, after long-term use, the reverse osmosis filter element usually has the phenomenon of membrane fouling and clogging, which increases the waiting time for users to take pure water and reduces the user experience.

[0003] In the prior art, there are two main methods for cleaning the reverse osmosis filter element:

[0004] (1) Speed ​​up the flow rate of the raw water side of the reverse osmosis filter element to flush the RO membrane, but this method requires strict control of the flow rate, pressure and frequency of the clean water, and the operation is cumbersome;

[0005] (2) Pure water is introduced into the raw water side of the reverse osmosis filter element. However, in this method, pure water must be prepared first, and some waste water will be generated in the process. After the pure water is used to clean the reverse osmosis filter element, waste water will also be generated. Therefore, this method will cause more waste water on the basis of the original waste water volume.

[0006] In addition, both cleaning methods are physical cleaning, and it is difficult to completely remove the pollutants accumulated in the membrane pores of the RO membrane, and the cleaning effect is poor. Summary of the invention

[0007] Based on the above, the purpose of the present invention is to provide a reverse osmosis filter element and a water purification device, which can deeply clean the membrane pores of the RO membrane, have a good cleaning effect, and are easy to operate.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A reverse osmosis filter element, comprising:

[0010] A filter element housing, wherein a water inlet and a wastewater outlet are arranged on the outer wall of the filter element housing;

[0011] A separator is arranged inside the filter element housing and divides the inside of the filter element housing into an upper chamber and a lower chamber, the separator is provided with a through hole connecting the upper chamber and the lower chamber, and the water inlet is connected to the lower chamber;

[0012] An RO membrane is disposed in the upper chamber, and the water outlet side of the RO membrane is connected to the wastewater outlet;

[0013] The bubble water forming mechanism comprises a power supply component and an electrode plate, wherein the electrode plate is arranged in the lower chamber, a plurality of through holes arranged in an array are arranged on the electrode plate, and the power supply component is electrically connected to the electrode plate.

[0014] As a preferred solution of a reverse osmosis filter element, there are multiple electrode plates, and the multiple electrode plates are arranged in the lower chamber at intervals along the vertical direction, and the multiple electrode plates are connected in series in sequence.

[0015] As a preferred solution for a reverse osmosis filter element, the through holes on two adjacent electrode plates are arranged in a staggered manner.

[0016] As a preferred solution of a reverse osmosis filter element, the through holes on each of the electrode plates are cylindrical holes, and the apertures of the through holes on the plurality of electrode plates decrease successively along the water flow direction.

[0017] As a preferred solution of a reverse osmosis filter element, there are multiple through holes, and the multiple through holes are radially distributed on the separator.

[0018] As a preferred solution of a reverse osmosis filter element, the RO membrane is embedded in the separator.

[0019] As a preferred solution of the reverse osmosis filter element, the power supply assembly includes a first connecting wire and a second connecting wire, and the first connecting wire and the second connecting wire are alternately connected to the positive electrode and the negative electrode of the external power supply;

[0020] The first communication wire, the electrode plate and the second communication wire are sequentially connected in series.

[0021] As a preferred solution of a reverse osmosis filter element, the first connecting wire and the second connecting wire are both embedded in the filter element housing.

[0022] As a preferred solution of a reverse osmosis filter element, the RO membrane is detachably connected to the filter element housing.

[0023] To achieve the above object, the present invention also provides a water purification device, including a reverse osmosis filter element as described in any of the above schemes.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a reverse osmosis filter element. By arranging a filter element shell, support and accommodation space can be provided for a partition, an RO membrane and a bubble water forming mechanism. By arranging an electrode plate with a plurality of through holes arranged in an array, the electrode plate can electrolyze water after coarse filtration by a pre-filter element. The electrolyzed water passes through the electrode plate and forms electrolyzed water containing bubbles under the action of the through holes on the electrode plate. The RO membrane is cleaned by the electrolyzed water containing bubbles. Compared with pure water, the electrolyzed water containing bubbles not only has a stronger cleaning effect on organic and inorganic pollution on the surface of the RO membrane, but also can penetrate into the membrane pores of the RO membrane for deep cleaning. In addition, the electrolyzed water containing bubbles also has a good inhibitory effect on bacterial growth, has a good cleaning effect, and can ensure that the reverse osmosis filter element has a long-lasting flux retention efficiency and a service life.

[0026] The present invention also provides a water purification device, which can clean the RO membrane by using the reverse osmosis filter element, has a good cleaning effect, and can extend the service life of the reverse osmosis filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 is a schematic diagram of the first structure of a reverse osmosis filter element provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of an electrode plate of a reverse osmosis filter element provided in an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of a second structure of a reverse osmosis filter element provided in an embodiment of the present invention;

[0031] Figure 4 It is a third structural schematic diagram of the reverse osmosis filter element provided in an embodiment of the present invention.

[0032] In the figure:

[0033] 1-filter housing; 11-water inlet; 12-wastewater outlet; 13-upper chamber; 14-lower chamber;

[0034] 2- separator; 21- via;

[0035] 3-RO membrane; 31-pure water outlet;

[0036] 4-bubble water forming mechanism; 41-power supply assembly; 42-electrode plate; 421-through hole. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] The present embodiment provides a water purification device, which includes a main pipeline and a filtering component. The main pipeline is provided with an inlet end and an outlet end. The inlet end is connected to a water source. The filtering component is provided on the main pipeline. Raw water enters from the inlet end and is filtered by the filtering component to form pure water. Users can take the pure water at the outlet end.

[0042] Specifically, the filter components include a pre-filter and a reverse osmosis filter, which are connected in series in sequence, and the pre-filter is located on the main pipeline and on the side close to the inlet end. The pre-filter is usually made of PP cotton and activated carbon materials. The raw water can filter out rust, mud and other particles with larger particle sizes through the pre-filter, and remove the odor in the raw water through the activated carbon material. The pre-filter plays the role of coarse filtration of the raw water. The reverse osmosis filter can finely filter the water filtered by the pre-filter. Since the pore size of the reverse osmosis membrane (RO membrane) of the reverse osmosis filter is one millionth of a hair, it only allows water molecules and some mineral ions with very small particle sizes to pass through. Therefore, the water filtered by the reverse osmosis filter contains only some mineral ions with very small particle sizes, and bacteria and viruses can be filtered out, making the pure water taken by users from the outlet cleaner.

[0043] After long-term use of water purification equipment, the reverse osmosis filter element will be contaminated. The reasons for membrane contamination are: first, the inorganic salt ions and small-particle colloids, polysaccharides, proteins, humic acid and other substances that cannot be filtered by the pre-filter element, but the membrane pores of the RO membrane are small, almost only allowing water molecules to pass through, therefore, the above substances that are not filtered out by the pre-filter element will adhere to the RO membrane, causing membrane contamination; second, the reverse osmosis filter element needs to work under external pressure, which increases the density of the filter cake layer and strengthens the membrane contamination. The existing technology usually uses speeding up the water flow rate on the raw water side of the reverse osmosis filter element or using pure water to clean the RO membrane, but both methods are physical cleaning, and it is difficult to completely remove the pollutants accumulated in the membrane pores of the RO membrane, and the cleaning effect is not good.

[0044] In order to solve the above problems, this embodiment provides a reverse osmosis filter element, such as Figure 1 and Figure 2 As shown, the reverse osmosis filter element includes a filter element housing 1, a separator 2, an RO membrane 3 and a bubble water forming mechanism 4, wherein a water inlet 11 and a wastewater outlet 12 are provided on the outer wall of the filter element housing 1; the separator 2 is arranged inside the filter element housing 1, and divides the inside of the filter element housing 1 into an upper chamber 13 and a lower chamber 14, and a through hole 21 connecting the upper chamber 13 and the lower chamber 14 is provided on the separator 2, and the water inlet 11 is connected to the lower chamber 14; the RO membrane 3 is arranged in the upper chamber 13, and the water outlet side of the RO membrane 3 is connected to the wastewater outlet 12; the bubble water forming mechanism 4 includes a power supply component 41 and an electrode plate 42, the electrode plate 42 is arranged in the lower chamber 14, and a plurality of through holes 421 arranged in an array are provided on the electrode plate 42, and the power supply component 41 is electrically connected to the electrode plate 42.

[0045] The reverse osmosis filter element provided in this embodiment can provide support and accommodation space for the separator 2, the RO membrane 3 and the bubble water forming mechanism 4 by providing a filter element housing 1; by providing an electrode plate 42 having a plurality of through holes 421 arranged in an array, the electrode plate 42 can electrolyze the water after the coarse filtration by the pre-filter element, and the electrolyzed water passes through the electrode plate 42, and forms electrolyzed water containing bubbles under the action of the through holes 421 on the electrode plate 42, and the RO membrane 3 is cleaned by the electrolyzed water containing bubbles. Compared with pure water, the electrolyzed water containing bubbles not only has a strong cleaning effect on the organic and inorganic pollution on the surface of the RO membrane 3, but also can penetrate into the membrane pores of the RO membrane 3 for deep cleaning. In addition, the electrolyzed water containing bubbles also has a good inhibitory effect on bacterial growth, has a good cleaning effect, and can ensure that the reverse osmosis filter element has a long-lasting flux retention efficiency and service life.

[0046] Specifically, the reverse osmosis filter element is arranged on the main pipeline, such as Figure 2 As shown, the water inlet 11 of the filter housing 1 is connected to the outlet of the pre-filter, and the water after the coarse filtration of the pre-filter can enter the lower chamber 14 through the water inlet 11, and the electrode plate 42 can electrolyze the water in the lower chamber 14 to form electrolyzed water. After the electrolyzed water passes through the through hole 421 on the electrode plate 42, it can form electrolyzed water containing bubbles. The electrolyzed water containing bubbles then enters the upper chamber 13 through the through hole 21 and flows along the Figure 1 The RO membrane 3 is cleaned in the water flow direction shown in the figure, and the wastewater generated after cleaning flows into the wastewater outlet 12 from the water outlet side of the RO membrane 3 and is then discharged, thereby completing the cleaning of the RO membrane 3. Figure 1 The upper surface of the RO membrane 3 is shown.

[0047] It is understandable that a booster pump is also provided on the main pipeline, and the booster pump is located between the pre-filter element and the reverse osmosis filter element. The booster pump can pump the water filtered by the pre-filter element into the reverse osmosis filter element, and the pure water formed after filtering by the reverse osmosis filter element can flow out through the pure water outlet 31. Therefore, when the water purification device is working normally, the electrolyzed water entering from the through hole 21 will pass through the membrane pores of the RO membrane 3 to form pure water, which will not play a role in cleaning. In order to ensure that the electrolyzed water does not pass through the membrane pores of the RO membrane 3, the water purification device needs to be shut down when the RO membrane 3 is cleaned.

[0048] Furthermore, there are multiple electrode plates 42, which are arranged in the lower chamber 14 at intervals along the vertical direction, and the multiple electrode plates 42 are connected in series. The multiple electrode plates 42 electrolyze the water in the lower chamber 14 at the same time, which can improve the electrolysis efficiency, improve the cleaning efficiency of the RO membrane 3, and shorten the downtime of the water purification equipment.

[0049] If the through holes 421 on the plurality of electrode plates 42 are all arranged opposite to each other, when the electrolyzed water passes through the plurality of electrode plates 42 in sequence, the bubbles in the electrolyzed water will directly pass through each through hole 421 in the vertical direction, making the distribution of bubbles in the electrolyzed water uneven. Therefore, in this embodiment, the through holes 421 on two adjacent electrode plates 42 are arranged in an alternating manner. With this arrangement, the yield of bubbles in the electrolyzed water can be further increased, and the uniformity of bubbles in the electrolyzed water can be improved.

[0050] Optionally, each through hole 421 on the electrode plate 42 is a cylindrical hole, and the apertures of the through holes 421 on the plurality of electrode plates 42 decrease in sequence along the water flow direction. After the bubbles in the electrolyzed water pass through the plurality of electrode plates 42 in sequence, they can be cut into bubbles with smaller apertures in the gradually decreasing apertures, thereby improving the cleaning effect and ensuring the cleanliness of the RO membrane 3.

[0051] Furthermore, there are multiple through holes 21 on the separator 2, and the multiple through holes 21 are radially distributed on the separator 2. With this arrangement, the electrolyzed water containing bubbles can simultaneously pass through the multiple through holes 21 into the membrane layers of the RO membrane 3, thereby achieving a more thorough cleaning of each membrane layer.

[0052] like Figure 1 As shown, the wastewater outlet 12 is located at the lower part of the filter housing 1, and a wastewater channel is arranged between the RO membrane 3 and the filter housing 1. The two ends of the wastewater channel are connected to the wastewater outlet 12 and the water outlet side of the RO membrane 3 respectively. Since the water outlet side of the RO membrane 3 is located on the upper surface of the RO membrane 3, and the wastewater outlet 12 is located at the lower part of the filter housing 1, the wastewater channel almost runs through the entire filter housing 1. In order to prevent the wastewater in the wastewater channel from passing through the through hole 21 on the separator 2 to the lower chamber 14, in this embodiment, the RO membrane 3 is embedded in the separator 2. With this arrangement, the separator 2 can not only separate the filter housing 1 into the upper chamber 13 and the lower chamber 14, but also isolate the wastewater channel and the lower chamber 14, so as to prevent the wastewater in the wastewater channel from entering the lower chamber 14, resulting in the blockage of the through hole 421 on the electrode plate 42, thereby extending the service life of the electrode plate 42.

[0053] In this embodiment, the RO membrane 3 is detachably connected to the filter housing 1. When the RO membrane 3 is damaged and needs to be replaced, it is only necessary to remove the RO membrane 3 from the filter housing 1 and replace it with a new RO membrane 3. There is no need to replace the entire reverse osmosis filter element, which simplifies the maintenance process and reduces the maintenance cost. Specifically, an annular groove is provided on the side wall of the separator 2, and a plurality of snap-in protrusions are provided on the outer wall of the RO membrane 3 at intervals along its circumference. The snap-in protrusions can be snapped into the annular groove, thereby realizing the detachable connection between the RO membrane 3 and the separator 2. Optionally, the snap-in protrusion is made of elastic material, and under the elastic force of the snap-in protrusion, the RO membrane 3 can be tightly snapped with the separator 2, and when disassembling the RO membrane 3, the operator can forcefully pull out the RO membrane 3 toward the end away from the separator 2, so that the snap-in protrusion is deformed, so that the snap-in protrusion is disengaged from the annular groove, thereby realizing the separation of the RO membrane 3 and the separator 2, which is simple and quick.

[0054] Furthermore, if Figure 1 As shown, the power supply assembly 41 includes a first connecting wire and a second connecting wire, and the first connecting wire and the second connecting wire are alternately connected to the positive electrode and the negative electrode of the external power supply; the first connecting wire, the electrode plate 42 and the second connecting wire are connected in series in sequence. When there are multiple electrode plates 42, the multiple electrode plates 42 are connected in series with each other through the series wire.

[0055] Specifically, the water purification equipment also includes a controller, which is electrically connected to the power supply component 41. Before leaving the factory, the production personnel write the control program into the controller. The controller can control the first connecting wire and the second connecting wire to alternately connect the positive and negative poles of the external power supply. This setting can prevent scale from forming on the electrode plate 42 and extend the service life of the electrode plate 42.

[0056] Optionally, the first connecting wire and the second connecting wire are both embedded in the filter element housing 1, which can reduce the overall volume of the reverse osmosis filter element and improve the space utilization of the reverse osmosis filter element.

[0057] Due to the variety of models and structures of water purification equipment, in order to coordinate the installation of various water purification equipment, such as Figure 1 , Figure 3 and Figure 4 As shown, the location of the power supply assembly 41 can be adaptively adjusted, such as Figure 1 As shown, the first connecting wire and the second connecting wire of the power supply assembly 41 are arranged on the side of the filter housing 1 away from the wastewater channel, and the connection position of the first connecting wire and the second connecting wire with the external power supply is located at the upper part of the filter housing 1; Figure 2As shown, the connection position of the first connecting wire and the second connecting wire of the power supply assembly 41 and the external power supply is located at the lower part of the filter element housing 1 and is arranged opposite to the electrode plate 42, which can reduce the length of the first connecting wire and the second connecting wire and reduce the manufacturing cost; Figure 3 As shown, the first connecting wire and the second connecting wire of the power supply component 41 are arranged on one side of the filter housing 1 close to the wastewater channel, and the connection position of the first connecting wire and the second connecting wire with the external power supply is located at the upper part of the filter housing 1. For the reverse osmosis filter element of this arrangement, since the first connecting wire and the second connecting wire need to pass through the wastewater channel and then connect to the electrode plate 42, it is necessary to make a waterproof arrangement for the first connecting wire and the second connecting wire to avoid the wastewater in the wastewater channel from contacting the first connecting wire or the second connecting wire, causing a short circuit. Of course, in other embodiments, the power supply component 41 can also adjust its setting position according to actual production needs, and this embodiment does not limit this.

[0058] In addition, in order to realize the automatic cleaning of the RO membrane 3 by the reverse osmosis filter element, the reverse osmosis filter element also includes a flow meter, which is arranged at the pure water outlet 31, and the flow meter is used to detect the flux of the pure water flowing out of the pure water outlet 31. In this embodiment, the flux of the pure water flowing out of the pure water outlet 31 specifically refers to the pure water flow rate flowing out of the pure water outlet 31 per unit time. Specifically, the flow meter is electrically connected to the controller, and the flow meter can transmit the measured current flux of the pure water flowing out of the pure water outlet 31 to the controller, and the controller can compare the current flux with the preset minimum flux. When the current flux is less than the preset minimum flux, the controller can control the booster pump upstream of the reverse osmosis filter element to stop working and turn on the power supply component 41 to clean the RO membrane 3; after the cleaning is completed, the power supply component 41 is disconnected, and the booster pump is restarted, and the user can then take pure water from the water outlet of the main line.

[0059] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A reverse osmosis filter element, characterized in that: include: A filter element housing (1), wherein a water inlet (11) and a wastewater outlet (12) are provided on an outer wall of the filter element housing (1); A separator (2) is arranged inside the filter element housing (1) and divides the inside of the filter element housing (1) into an upper chamber (13) and a lower chamber (14); a through hole (21) is provided on the separator (2) for connecting the upper chamber (13) and the lower chamber (14); and the water inlet (11) is connected to the lower chamber (14); An RO membrane (3) is arranged in the upper chamber (13), and the water outlet side of the RO membrane (3) is connected to the wastewater outlet (12); A bubble water forming mechanism (4), comprising a power supply component (41) and an electrode plate (42), wherein the electrode plate (42) is arranged in the lower chamber (14), a plurality of through holes (421) arranged in an array are arranged on the electrode plate (42), and the power supply component (41) is electrically connected to the electrode plate (42); The wastewater outlet (12) is located at the lower part of the filter element housing (1), and a wastewater channel is provided between the RO membrane (3) and the filter element housing (1). The two ends of the wastewater channel are respectively connected to the wastewater outlet (12) and the water outlet side of the RO membrane (3). The RO membrane (3) is embedded in the partition (2), and the partition (2) can play a role in isolating the wastewater channel and the lower chamber (14).

2. The reverse osmosis filter element according to claim 1, characterized in that: There are a plurality of electrode plates (42), and the plurality of electrode plates (42) are arranged in the lower chamber (14) at intervals along the vertical direction. The plurality of electrode plates (42) are connected in series in sequence.

3. The reverse osmosis filter element according to claim 2, characterized in that: The through holes (421) on two adjacent electrode plates (42) are arranged in a staggered manner.

4. The reverse osmosis filter element according to claim 2, characterized in that: The through holes (421) on each of the electrode plates (42) are cylindrical holes, and the apertures of the through holes (421) on the plurality of electrode plates (42) decrease sequentially along the water flow direction.

5. The reverse osmosis filter element according to claim 1, characterized in that: There are a plurality of via holes (21), and the plurality of via holes (21) are radially distributed on the separator (2).

6. The reverse osmosis filter element according to claim 1, characterized in that: The power supply assembly (41) comprises a first connecting wire and a second connecting wire, wherein the first connecting wire and the second connecting wire are alternately connected to the positive electrode and the negative electrode of the external power supply; The first connecting wire, the electrode plate (42) and the second connecting wire are sequentially connected in series.

7. The reverse osmosis filter element according to claim 6, characterized in that: The first connecting wire and the second connecting wire are both embedded in the filter element housing (1).

8. The reverse osmosis filter element according to claim 1, characterized in that: The RO membrane (3) is detachably connected to the filter element housing (1).

9. A water purification device, characterized in that: It comprises the reverse osmosis filter element as described in any one of claims 1 to 8.

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