Composite filter element assembly and water purification equipment

Abstract

The embodiment of the utility model provides a composite filter element assembly and water purification equipment, a variable volume water storage piece of the composite filter element assembly is positioned in a shell and surrounds the periphery of a first filter material, and the variable volume water storage piece and the first filter material are arranged at an interval. The second filter material is located in the shell and spaced from the variable-volume water storage part, the first filter material is located on the inner side of the variable-volume water storage part, and the second filter material is located on the outer side of the variable-volume water storage part. Thus, the composite filter element assembly can filter water on the inner side of the variable-volume water storage piece through the first filter material, the composite filter element assembly can filter water on the outer side of the variable-volume water storage piece through the second filter material, and the cleanliness of the water on the inner side and the outer side of the variable-volume water storage piece can be improved. The variable-volume water storage part can store water entering the variable-volume water storage part, so that a certain amount of water can be stored in the composite filter element assembly, the flow of the composite filter element assembly during reuse can be increased conveniently, and use by a user is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically, to a composite filter element assembly and a water purification device. Background Technology

[0002] As people's living standards improve, they are paying more and more attention to water quality and hygiene, and equipping households with water purification equipment is becoming a mainstream trend. Water purification equipment generally filters water by setting up filter cartridges.

[0003] However, the filter cartridges of water purification equipment based on related technologies can only filter water, and their function is limited. Utility Model Content

[0004] This utility model provides a composite filter element assembly and a water purification device to improve the above-mentioned technical problems.

[0005] The present invention achieves the above objectives through the following technical solutions.

[0006] In a first aspect, this utility model provides a composite filter element assembly, which includes a housing, a first filter media, a variable-volume water storage element, and a second filter media. The first filter media is located within the housing, and the variable-volume water storage element is located within the housing and surrounds the outer periphery of the first filter media, with the variable-volume water storage element and the first filter media spaced apart. The second filter media is located within the housing and spaced apart from the variable-volume water storage element, with the first filter media located inside the variable-volume water storage element and the second filter media located outside the variable-volume water storage element.

[0007] In some embodiments, the outer casing is provided with a second filter material inlet, a second filter material outlet, a first filter material inlet, and a first filter material outlet. The variable volume water storage component has a first water storage cavity, in which the first filter material is located. Both the first filter material inlet and the first filter material outlet are connected to the first water storage cavity. The first filter material inlet is located on the outside of the first filter material, and the first filter material outlet is located on the inside of the first filter material. A second water storage cavity is formed between the variable volume water storage component and the outer casing, in which the second filter material is located. Both the second filter material inlet and the second filter material outlet are connected to the second water storage cavity. The second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material. The variable volume water storage component has an inlet state and a outlet state. In the inlet state, the variable volume water storage component expands towards the second water storage cavity under the action of water in the first water storage cavity. In the outlet state, the variable volume water storage component contracts towards the first water storage cavity under the action of water in the second water storage cavity.

[0008] In some embodiments, the second filter media surrounds the outer periphery of the variable volume water storage element, and the variable volume water storage element and the inner wall of the second filter media are spaced apart.

[0009] In some embodiments, the second filter material and the variable volume water storage element are distributed along the height direction of the composite filter element assembly, and the variable volume water storage element is spaced apart from the inner wall of the outer shell.

[0010] In some embodiments, the composite filter element assembly further includes a flow guide surrounding the outer periphery of the variable volume water storage element. The flow guide is connected to the second filter material and the variable volume water storage element, and is adapted to guide the water filtered by the second filter material so that the water filtered by the second filter material is discharged from the composite filter element assembly.

[0011] In some embodiments, the composite filter element assembly further includes a flow guide, which is disposed at the end of the first filter material and the first filter material surrounds the outer periphery of the flow guide. The flow guide is adapted to guide the water filtered by the first filter material so that the water filtered by the first filter material is discharged from the composite filter element assembly.

[0012] In some implementations, the variable-volume water storage element is made of rubber, silicone, or a plastic membrane.

[0013] Secondly, this utility model provides a water purification device, which includes a membrane filter assembly, a pipeline assembly, and a composite filter assembly provided in any of the above embodiments, wherein the pipeline assembly is connected to the membrane filter assembly and the composite filter assembly.

[0014] In some embodiments, the water purification equipment includes a first solenoid valve, a booster device, and a check valve. The outer casing is provided with a first filter media inlet and a first filter media outlet. The membrane filter assembly includes a membrane filter inlet, a membrane filter outlet, and a drain outlet. The pipeline assembly includes a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline. The first pipeline is connected to the membrane filter inlet. The booster device is located in the first pipeline. The second pipeline is connected to the membrane filter outlet and the first filter media inlet. The first solenoid valve is located in the second pipeline. The third pipeline is connected to the first filter media outlet. The fourth pipeline is connected to the third pipeline and the inlet end of the booster device. The check valve is located in the fourth pipeline. The water purification equipment has a reflux stage and a bubble membrane stage. When the water purification equipment is in the reflux stage, the first solenoid valve opens the second pipe, and the water effluent from the membrane filter element returns to the membrane filter element through the second pipe, the composite filter element, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification equipment enters the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve closes, and the water effluent from the composite filter element enters the membrane filter element through the third pipe, the fourth pipe, and the first pipe.

[0015] In some embodiments, the piping assembly further includes a fifth pipe and a sixth pipe. The housing is provided with a second filter media inlet and a second filter media outlet. The fifth pipe is connected to the second filter media outlet and the first pipe, and the sixth pipe is connected to the second filter media inlet. The water purification device also includes a second solenoid valve, which is located on the fifth pipe. When the water purification device is in the reflux stage, the first solenoid valve opens the second pipe, and the second solenoid valve opens the fifth pipe. The composite filter element assembly is adapted to filter the water entering from the sixth pipe. The water filtered by the composite filter element assembly enters the membrane filter element assembly through the fifth pipe and the first pipe. The water effluent from the membrane filter element assembly flows back to the membrane filter element assembly through the second pipe, the composite filter element assembly, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification device is in the bubble membrane stage. When the water purification device is in the bubble membrane stage, the first solenoid valve is closed, the second solenoid valve is closed, and the water effluent from the composite filter element assembly enters the membrane filter element assembly through the third pipe, the fourth pipe, and the first pipe.

[0016] In some embodiments, the membrane filter assembly is further provided with a drain outlet, and the water purification equipment also includes a concentrated water solenoid valve and a concentrated water discharge pipe. The concentrated water discharge pipe is connected to the drain outlet, and the concentrated water solenoid valve is located in the concentrated water discharge pipe. When the water purification equipment is in the reflux stage, the first solenoid valve opens the second pipe, the concentrated water solenoid valve closes, and the water effluent from the membrane filter assembly flows back to the membrane filter assembly through the second pipe, the composite filter assembly, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification equipment is in the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve closes, the concentrated water solenoid valve opens the concentrated water discharge pipe, and the water effluent from the variable volume water storage device enters the membrane filter assembly through the third pipe, the fourth pipe, and the first pipe. The concentrated water in the membrane filter assembly is discharged from the concentrated water discharge pipe.

[0017] In some embodiments, the variable-volume water storage device has a first water storage cavity, in which a first filter material is located. Both the first filter material inlet and outlet are connected to the first water storage cavity. The first filter material inlet is located on the outside of the first filter material, and the first filter material outlet is located on the inside of the first filter material. A second water storage cavity is formed between the variable-volume water storage device and the outer shell, in which a second filter material is located. Both the second filter material inlet and outlet are connected to the second water storage cavity. The second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material. The variable-volume water storage device has a water-inlet state, and in this state, it expands towards the second water storage cavity under the influence of the water in the first water storage cavity.

[0018] In some embodiments, the variable-volume water storage device has a first water storage cavity, in which a first filter material is located. Both the first filter material inlet and outlet are connected to the first water storage cavity. The first filter material inlet is located on the outside of the first filter material, and the first filter material outlet is located on the inside of the first filter material. A second water storage cavity is formed between the variable-volume water storage device and the outer shell, in which a second filter material is located. Both the second filter material inlet and outlet are connected to the second water storage cavity. The second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material. The variable-volume water storage device has a drainage state. In the drainage state, the variable-volume water storage device contracts towards the first water storage cavity under the action of the water in the second water storage cavity.

[0019] This utility model provides a composite filter element assembly and a water purification device. The first filter material of the composite filter element assembly is located within a housing. A variable-volume water storage element is located within the housing and surrounds the outer periphery of the first filter material, with the variable-volume water storage element spaced apart from the first filter material. A second filter material is located within the housing and spaced apart from the variable-volume water storage element. The first filter material is located inside the variable-volume water storage element, and the second filter material is located outside the variable-volume water storage element. Thus, the composite filter element assembly can filter water inside the variable-volume water storage element through the first filter material, and water outside the variable-volume water storage element through the second filter material, helping to improve the cleanliness of the water inside and outside the variable-volume water storage element. The variable-volume water storage element can store water, allowing the composite filter element assembly to store a certain amount of water, facilitating increased flow rate during reuse, improving user convenience, and enabling the composite filter element assembly to have both filtering and water storage functions, thereby enriching its functionality. In addition, the variable volume water storage element can deform to increase its volume, making it easier for the variable volume water storage element to store more water. The composite filter element assembly does not need to set up a large volume water storage structure to store water, which helps to reduce the space occupied by the variable volume water storage element in the composite filter element assembly, and also helps to reduce the overall volume of the composite filter element assembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of the composite filter element assembly provided in an embodiment of the present invention is shown.

[0022] Figure 2A schematic diagram of the structure of a composite filter element assembly provided in another embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the structure of the water purification equipment provided in this embodiment of the present invention is shown. Detailed Implementation

[0024] To enable those skilled in the art to better understand the embodiments of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figure 1 This utility model provides a composite filter element assembly 100, which includes a housing 11, a first filter material 12, a variable volume water storage element 13, and a second filter material 14. The first filter material 12 is located in the housing 11, and the variable volume water storage element 13 is located in the housing 11 and surrounds the outer periphery of the first filter material 12, with the variable volume water storage element 13 and the first filter material 12 spaced apart. The second filter material 14 is located in the housing 11 and spaced apart from the variable volume water storage element 13, with the first filter material 12 located inside the variable volume water storage element 13 and the second filter material 14 located outside the variable volume water storage element 13.

[0027] Thus, the composite filter assembly 100 can filter water inside the variable volume water storage element 13 through the first filter media 12, and filter water outside the variable volume water storage element 13 through the second filter media 14, which helps to improve the cleanliness of the water inside and outside the variable volume water storage element 13. The variable volume water storage element 13 can store water entering it, allowing the composite filter assembly 100 to store a certain amount of water, which facilitates increasing the flow rate when the composite filter assembly 100 is reused. This also allows the composite filter assembly 100 to have both filtering and water storage functions, thereby enriching the functionality of the composite filter assembly 100. In addition, the variable volume water storage component 13 can be deformed to increase its volume, making it easier for the variable volume water storage component 13 to store more water. The composite filter element assembly 100 does not need to set up a large volume water storage structure to store water, which helps to reduce the space occupied by the variable volume water storage component 13 in the composite filter element assembly 100, and also helps to reduce the overall volume of the composite filter element assembly 100.

[0028] For example, when water enters the variable volume water storage component 13, the variable volume water storage component 13 can deform under the action of gravity of the water to increase the volume of the variable volume water storage component 13, thereby storing more water. When the composite filter element assembly 100 is used again, since water is stored in the variable volume water storage component 13, it is convenient to increase the flow rate of the composite filter element assembly 100 during use, which is convenient for users. Moreover, the water in the variable volume water storage component 13 after being filtered by the first filter material 12 can be directly discharged. Users do not need to wait for a long time for the composite filter element assembly 100 to enter water and filter water, which helps to save users' time in taking and using water.

[0029] The variable volume water storage component 13 is made of flexible materials such as rubber, silicone, and plastic film, or it can be made of other elastic polymer materials; the first filter material 12 may include filter materials such as activated carbon, ultrafiltration membrane, and non-woven fabric; the second filter material 14 may include filter materials such as PP cotton, activated carbon, origami PP, and non-woven fabric, and the specific materials can be set according to the actual situation.

[0030] In some embodiments, the outer casing 11 is provided with a second filter material inlet 111, a second filter material outlet 112, a first filter material inlet 113, and a first filter material outlet 114. The variable volume water storage component 13 has a first water storage cavity 131, in which the first filter material 12 is located. The first filter material inlet 113 and the first filter material outlet 114 are both connected to the first water storage cavity 131. The first filter material inlet 113 is located in the first filter material 12. On the outside, the first filter material outlet 114 is located inside the first filter material 12. A second water storage cavity 115 is formed between the variable volume water storage component 13 and the outer shell 11. The second filter material 14 is located in the second water storage cavity 115. The second filter material inlet 111 and the second filter material outlet 112 are both connected to the second water storage cavity 115. The second filter material inlet 111 is located outside the second filter material 14, and the second filter material outlet 112 is located inside the second filter material 14. The variable volume water storage component 13 has a water inlet state and a water outlet state. When in the water inlet state, the variable volume water storage component 13 expands towards the second water storage cavity 115 under the action of water in the first water storage cavity 131. When in the water outlet state, the variable volume water storage component 13 contracts towards the first water storage cavity 131 under the action of water in the second water storage cavity 115.

[0031] In this way, the deformation performance of the variable volume water storage component 13 and the force of the water in the first water storage chamber 131 and the second water storage chamber 115 can be used to ensure the drainage of water in the first water storage chamber 131 and the second water storage chamber 115. The drainage method of the first water storage chamber 131 and the second water storage chamber 115 is simple. The composite filter element assembly 100 does not need to be equipped with a separate pump to draw and discharge water in the first water storage chamber 131 and / or the second water storage chamber 115, which helps to simplify the structure of the composite filter element assembly 100, facilitates manufacturing, and also helps to save manufacturing costs. Furthermore, the first filter material inlet 113 is located on the outside of the first filter material 12, and the first filter material outlet 114 is located on the inside of the first filter material 12. This helps to ensure that the water entering from the first filter material inlet 113 can be filtered by the first filter material 12 and discharged through the first filter material outlet 114, thus helping to ensure the cleanliness of the water discharged from the first filter material outlet 114. The second filter material inlet 111 is located on the outside of the second filter material 14, and the second filter material outlet 112 is located on the inside of the second filter material 14. This helps to ensure that the water entering from the second filter material inlet 111 can be filtered by the second filter material 14 and discharged through the second filter material outlet 112, thus helping to ensure the cleanliness of the water discharged from the second filter material outlet 112.

[0032] For example, when the variable volume water storage device 13 is in the water-inlet state, it can expand towards the second water storage chamber 115 under the gravity of the water in the first water storage chamber 131, thereby increasing its volume. At this time, the variable volume water storage device 13 will squeeze the water in the second water storage chamber 115, causing the water in the second water storage chamber 115 to be discharged. When the variable volume water storage device 13 is in the water-drainage state, water enters the second water storage chamber 115 to increase its volume. At this time, the water in the second water storage chamber 115 will squeeze the variable volume water storage device 13, causing it to contract towards the first water storage chamber 131 under the action of the water in the second water storage chamber 115, thereby causing the water in the first water storage chamber 131 to be discharged.

[0033] In some embodiments, the second filter material 14 surrounds the outer periphery of the variable volume water storage component 13, and the variable volume water storage component 13 and the inner wall 141 of the second filter material 14 are spaced apart.

[0034] This helps to increase the space for deformation of the variable volume water storage component 13, and helps to reduce the obstruction of the variable volume water storage component 13 by the inner wall 141 of the second filter material 14. This helps the variable volume water storage component 13 to deform better to discharge the water in the second water storage chamber 115. It also helps the water in the second water storage chamber 115 to fill the gap between the variable volume water storage component 13 and the inner wall 141 of the second filter material 14. This helps the water in the second water storage chamber 115 to better squeeze the variable volume water storage component 13 to discharge the water in the first water storage chamber 131.

[0035] Please see Figure 2 In some embodiments, the second filter material 14 and the variable volume water storage element 13 are distributed along the height direction Y of the composite filter element assembly 100, and the variable volume water storage element 13 is spaced apart from the inner wall 116 of the outer shell 11.

[0036] This helps to increase the space for deformation of the variable volume water storage component 13, and helps to reduce the obstruction of the variable volume water storage component 13 by the inner wall 116 of the outer shell 11. This helps the variable volume water storage component 13 to deform better to discharge the water in the second water storage chamber 115. It also helps the water in the second water storage chamber 115 to fill the gap between the variable volume water storage component 13 and the inner wall 116 of the outer shell 11. This helps the water in the second water storage chamber 115 to better squeeze the variable volume water storage component 13 to discharge the water in the first water storage chamber 131.

[0037] In some embodiments, the composite filter assembly 100 further includes a flow guide 15, which surrounds the outer periphery of the variable volume water storage component 13. The flow guide 15 is connected to the second filter material 14 and the variable volume water storage component 13. The flow guide 15 is adapted to guide the water filtered by the second filter material 14 so that the water filtered by the second filter material 14 is discharged from the composite filter assembly 100.

[0038] This helps the water filtered by the second filter material 14 to be discharged from the composite filter element assembly 100 in a predetermined direction, helps reduce the accumulation of water filtered by the second filter material 14 in the composite filter element assembly 100, and also helps to disperse the impact of water flow on the second filter material 14, helping to reduce the pressure on the second filter material 14, thereby helping to extend the service life of the second filter material 14.

[0039] When the second filter material 14 surrounds the outer periphery of the variable volume water storage component 13, the flow guide 15 can be placed at the end of the second filter material 14, and the flow guide 15 is located between the second filter material 14 and the variable volume water storage component 13; when the second filter material 14 and the variable volume water storage component 13 are distributed along the height direction Y of the composite filter element assembly 100, the flow guide 15 can be placed on the top of the second filter material 14, and the flow guide 15 is located between the outer shell 11 and the variable volume water storage component 13, and the flow guide 15 and the second filter material 14 are distributed along the height direction Y of the composite filter element assembly 100. The specific arrangement can be made according to the actual situation.

[0040] The guide member 15 can be connected to the end of the variable volume water storage component 13. For example, the guide member 15 may include a limiting part located at the end of the guide member 15 facing the variable volume water storage component 13. The variable volume water storage component 13 is provided with a mating part located at the end of the variable volume water storage component 13 facing the guide member 15. The limiting part and the mating part are mutually limiting and mating. In this way, the guide member 15 can also provide a certain supporting force to the end of the variable volume water storage component 13, which helps to improve the stability of the connection between the variable volume water storage component 13 and the guide member 15, and helps to reduce the possibility of the variable volume water storage component 13 becoming loose from the guide member 15.

[0041] In some embodiments, the composite filter assembly 100 further includes a flow guide 16, which is disposed at the end of the first filter material 12 and the first filter material 12 surrounds the outer periphery of the flow guide 16. The flow guide 16 is adapted to guide the water filtered by the first filter material 12 so that the water filtered by the first filter material 12 is discharged from the composite filter assembly 100.

[0042] In this way, the water filtered by the first filter material 12 is discharged from the composite filter element assembly 100 in a predetermined direction, which helps to reduce the accumulation of water filtered by the first filter material 12 in the variable volume water storage device 13, and also helps to disperse the impact of water flow on the first filter material 12, which helps to reduce the pressure on the first filter material 12, thereby helping to extend the service life of the first filter material 12.

[0043] Please refer to the following: Figure 1 and Figure 3 This utility model provides a water purification device 1000, which includes a membrane filter element assembly 200, a pipeline assembly 300, and a composite filter element assembly 100 provided in any of the above embodiments. The pipeline assembly 300 is connected to the membrane filter element assembly 200 and the composite filter element assembly 100.

[0044] In this way, the water purification equipment 1000 can perform dual filtration of water through the membrane filter element 200 and the composite filter element 100, which helps to improve the cleanliness of the water inside the water purification equipment 1000.

[0045] In some embodiments, the water purification device 1000 includes a first solenoid valve 400, a booster device 600, and a check valve 700. The housing 11 is provided with a first filter media inlet 113 and a first filter media outlet 114. The membrane filter assembly 200 includes a membrane filter inlet 21 and a membrane filter outlet 22. The pipeline assembly 300 includes a first pipeline 31, a second pipeline 32, a third pipeline 33, and a fourth pipeline 34. The first pipeline 31 is connected to the membrane filter inlet 21. The booster device 600 is disposed in the first pipeline 31. The second pipeline 32 is connected to the membrane filter outlet 22 and the first filter media inlet 113. The first solenoid valve 400 is disposed in the second pipeline 32. The third pipeline 33 is connected to the first filter media outlet 114. The fourth pipeline 34 is connected to the third pipeline 33 and the inlet end of the booster device 600. The check valve 700 is disposed in the fourth pipeline 34. The booster device 600 can be a booster pump.

[0046] In this way, the pressurization device 600 can draw water from the fourth pipe 34 to meet the water intake demand in the first pipe 31, thereby helping to improve the water replenishment efficiency in the membrane filter assembly 200, ensuring that there is enough water and pure water replenishment in the membrane filter assembly 200, ensuring that the pure water side of the membrane filter assembly 200 is in a suitable pressure environment, and helping to better reduce the leakage of water from the concentrate side of the membrane filter assembly 200 to the pure water side. The check valve 700 helps to reduce the backflow of water from the first pipe 31 to the fourth pipe 34, and helps to ensure the normal operation of the water purification equipment 1000.

[0047] The water purification equipment 1000 has a reflux stage and a bubble membrane stage. When the water purification equipment 1000 is in the reflux stage, the first solenoid valve 400 opens the second pipe 32, and the water effluent from the membrane filter element 200 flows back to the membrane filter element 200 through the second pipe 32, the composite filter element 100, the third pipe 33, the fourth pipe 34, and the first pipe 31. After the reflux stage, the water purification equipment 1000 is in the bubble membrane stage. When the water purification equipment 1000 is in the bubble membrane stage, the first solenoid valve 400 closes, and the water effluent from the composite filter element 100 enters the membrane filter element 200 through the third pipe 33, the fourth pipe 34, and the first pipe 31.

[0048] Because the ion concentration of the concentrated water side of the water purifier 1000 using membrane filter module 200 is much higher than that of the pure water side after a period of settling, due to the influence of natural osmosis (forward osmosis), ions from the concentrated water side will seep into the pure water side. This results in an excessively high total dissolved solids content when the water purifier 1000 draws water again, affecting the user's water intake experience. Therefore, through the reflux and bubble membrane stages of the water purifier 1000, the reflux stage can initially reduce the total dissolved solids content in the water within the membrane filter module 200, and the bubble membrane stage can further reduce the total dissolved solids content, thus helping to better reduce the total dissolved solids content in the water within the membrane filter module 200 and improve water cleanliness.

[0049] For example, the pure water produced by the membrane filter assembly 200 can enter the variable volume water storage device 13 through the second pipe 32. The pure water fills the variable volume water storage device 13. Under the action of continuous pure water pressure, the variable volume water storage device 13 reaches its maximum volume. Then, the pure water in the variable volume water storage device 13 flows back to the membrane filter assembly 200 through the third pipe 33, the fourth pipe 34 and the first pipe 31. The returned water mixes with the original water in the membrane filter assembly 200, thereby reducing the total amount of dissolved solids in the water in the membrane filter assembly 200. Then, the pure water in the variable volume water storage device 13 directly enters the membrane filter assembly 200 through the third pipe 33, the fourth pipe 34 and the first pipe 31 to further reduce the total amount of dissolved solids in the water in the membrane filter assembly 200. Finally, the membrane filter assembly 200 filters and separates pure water and concentrated water, and the pure water is available for the user.

[0050] Because the water purification equipment 1000 uses a combination of reflux and bubble membrane processing, it can pre-treat the water in the membrane filter assembly 200 through the reflux stage and further process it through the bubble membrane stage. This helps improve the efficiency of the water purification equipment 1000 in removing the total dissolved solids in the water in the membrane filter assembly 200 after a period of settling. It also helps to better reduce the total dissolved solids in the water in the membrane filter assembly 200, thereby improving the water cleanliness. This helps to reduce the low processing efficiency caused by the water purification equipment 1000 using only the reflux method, and also helps to reduce the need for the variable volume water storage device 13 to store a large amount of water to meet the water treatment requirements of the membrane filter assembly 200 when using only the bubble membrane method. This helps to reduce the amount of water required by the variable volume water storage device 13, thereby reducing the volume of the variable volume water storage device 13 and the overall volume of the water purification equipment 1000.

[0051] In some embodiments, the pipe assembly 300 further includes a fifth pipe 36 and a sixth pipe 37. The housing 11 is provided with a second filter material inlet 111 and a second filter material outlet 112. The fifth pipe 36 is connected to the second filter material outlet 112 and the first pipe 31. The sixth pipe 37 is connected to the second filter material inlet 111. The water purification device 1000 also includes a second solenoid valve 800, which is located in the fifth pipe 36. When the water purification equipment 1000 is in the reflux stage, the first solenoid valve 400 opens the second pipe 32, and the second solenoid valve 800 opens the fifth pipe 36. The composite filter element assembly 100 is suitable for filtering water entering from the sixth pipe 37. The water filtered by the composite filter element assembly 100 enters the membrane filter element assembly 200 through the fifth pipe 36 and the first pipe 31. The water effluent from the membrane filter element assembly 200 flows back to the membrane filter element assembly 200 through the second pipe 32, the composite filter element assembly 100, the third pipe 33, the fourth pipe 34, and the first pipe 31. After the reflux stage, the water purification equipment 1000 enters the bubble membrane stage. When the water purification equipment 1000 is in the bubble membrane stage, the first solenoid valve 400 and the second solenoid valve 800 are closed. The water effluent from the composite filter element assembly 100 enters the membrane filter element assembly 200 through the third pipe 33, the fourth pipe 34, and the first pipe 31.

[0052] In this way, the water purification equipment 1000 can replenish water to the composite filter element assembly 100 through the sixth pipe 37 and the second filter material inlet 111. The filtered water can flow from the fifth pipe 36 to the first pipe 31 to replenish water to the membrane filter element assembly 200, so as to ensure that the membrane filter element assembly 200 can be replenished with filtered pure water. This helps to ensure that the pure water side of the membrane filter element assembly 200 is in a suitable pressure environment, helps to reduce the situation of water seeping from the concentrate side of the membrane filter element assembly 200 to the pure water side, and also helps to ensure that the membrane filter element assembly 200 can normally carry out the reflux stage, thereby helping to ensure the normal operation of the water purification equipment 1000 in the reflux stage.

[0053] In some embodiments, the membrane filter assembly 200 is also provided with a drain outlet 23, and the water purification equipment 1000 also includes a concentrate solenoid valve 500 and a concentrate discharge pipe 35, the concentrate discharge pipe 35 being connected to the drain outlet 23, and the concentrate solenoid valve 500 being disposed on the concentrate discharge pipe 35. When the water purification equipment 1000 is in the reflux stage, the first solenoid valve 400 opens the second pipe 32, the concentrated water solenoid valve 500 closes, and the water from the membrane filter element 200 flows back to the membrane filter element 200 through the second pipe 32, the composite filter element 100, the third pipe 33, the fourth pipe 34, and the first pipe 31. After the reflux stage, the water purification equipment 1000 is in the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve 400 closes, the concentrated water solenoid valve 500 opens the concentrated water discharge pipe 35, and the water from the variable volume water storage device 13 enters the membrane filter element 200 through the third pipe 33, the fourth pipe 34, and the first pipe 31. The concentrated water in the membrane filter element 200 is discharged from the concentrated water discharge pipe 35.

[0054] In this way, the concentrated water solenoid valve 500 can hold back pressure during the reflux phase, which helps maintain the membrane filter assembly 200 in a suitable pressure environment, helps maintain the normal operation of the membrane filter assembly 200, and thus helps ensure the normal operation of the water purification equipment 1000 during the reflux phase. The concentrated water solenoid valve 500 can release pressure during the membrane soaking phase, allowing the concentrated water discharge pipe 35 to connect with the outside. The concentrated water in the membrane filter assembly 200 can be discharged from the concentrated water discharge pipe 35, and also makes the pressure at the membrane filter inlet 21 greater than the pressure at the drain outlet 23, causing the water at the membrane filter inlet 21 to move to the drain outlet 23 more quickly, thereby helping to improve the filtration efficiency of the membrane filter assembly 200.

[0055] In some embodiments, the variable-volume water storage component 13 has a first water storage cavity 131, in which a first filter material 12 is located. A first filter material inlet 113 and a first filter material outlet 114 are both connected to the first water storage cavity 131. The first filter material inlet 113 is located outside the first filter material 12, and the first filter material outlet 114 is located inside the first filter material 12. A second water storage cavity 115 is formed between the variable-volume water storage component 13 and the outer shell 11. A second filter material 14 is located in the second water storage cavity 115. Both the second filter material inlet 111 and the second filter material outlet 112 are connected to the second water storage cavity 115. The second filter material inlet 111 is located outside the second filter material 14, and the second filter material outlet 112 is located inside the second filter material 14. The variable-volume water storage component 13 has a water-inlet state, and in this state, it expands towards the second water storage cavity 115.

[0056] In this way, the deformation properties of the variable volume water storage component 13 and the force of the water in the first water storage chamber 131 can be used to ensure the entry of water in the first water storage chamber 131 and the discharge of water in the second water storage chamber 115, thereby ensuring the normal operation of the reflux stage and the bubble membrane stage of the water purification equipment 1000. The water purification equipment 1000 does not need to be equipped with a separate pump to draw and discharge water in the composite filter element assembly 100, which helps to simplify the structure of the water purification equipment 1000, facilitates manufacturing, and also helps to save manufacturing costs.

[0057] The variable-volume water storage component 13 also has a drainage state, in which it contracts towards the first water storage chamber 131. Thus, the deformation properties of the variable-volume water storage component 13 and the force of the water in the second water storage chamber 115 can be used to ensure the discharge of water from the first water storage chamber 131, thereby ensuring the normal operation of the reflux and bubble membrane stages of the water purification equipment 1000. The water purification equipment 1000 does not require a separate pump to draw and discharge water from the composite filter element assembly 100, which helps simplify the structure of the water purification equipment 1000, facilitates manufacturing, and also helps save manufacturing costs.

[0058] When the water purification equipment 1000 is in the reflux stage, the variable volume water storage component 13 is in the water inlet state and then in the water outlet state. After the reflux stage, the water purification equipment 1000 is in the bubble membrane stage. When the water purification equipment 1000 is in the bubble membrane stage, the variable volume water storage component 13 is in the water outlet state.

[0059] For example, when the water purification device 1000 is in the reflux stage, the variable volume water storage component 13 is in the water inlet state and then in the water outlet state. The variable volume water storage component 13 can expand towards the second water storage chamber 115 under the gravity of the water in the first water storage chamber 131, thereby increasing the volume of the variable volume water storage component 13. At this time, the variable volume water storage component 13 will squeeze the water in the second water storage chamber 115, so that the water in the second water storage chamber 115 is discharged and flows to the membrane filter assembly 200, so that the membrane filter assembly 200 is replenished with water. Then, water enters the second water storage chamber 115 through the sixth pipe 37 to increase the volume of water in the second water storage chamber 115. At this time, the water in the second water storage chamber 115 will squeeze the variable volume water storage component 13, so that the variable volume water storage component 13 will contract towards the first water storage chamber 131 under the action of the water in the second water storage chamber 115, thereby causing the water in the first water storage chamber 131 to be discharged and flow back into the membrane filter assembly 200. After the reflux stage, the water purification equipment 1000 enters the bubble membrane stage. When the water purification equipment 1000 is in the bubble membrane stage, the variable volume water storage component 13 is in the drainage state. At this time, water enters the second water storage chamber 115 through the sixth pipe 37 to increase the volume of water in the second water storage chamber 115. At this time, the water in the second water storage chamber 115 will squeeze the variable volume water storage component 13, causing the variable volume water storage component 13 to contract towards the first water storage chamber 131 under the action of the water in the second water storage chamber 115. This causes the water in the first water storage chamber 131 to be discharged and flow into the membrane filter element assembly 200. Finally, the membrane filter element assembly 200 filters and separates pure water and concentrated water. The concentrated water is discharged through the concentrated water pipe, and the pure water is available for users.

[0060] In summary, the composite filter assembly 100 and water purification device 1000 provided by this embodiment of the invention have the following characteristics: the first filter material 12 of the composite filter assembly 100 is located in the outer shell 11, and the variable volume water storage component 13 is located in the outer shell 11 and surrounds the outer periphery of the first filter material 12, with the variable volume water storage component 13 and the first filter material 12 spaced apart. The second filter material 14 is located in the outer shell 11 and spaced apart from the variable volume water storage component 13, with the first filter material 12 located inside the variable volume water storage component 13 and the second filter material 14 located outside the variable volume water storage component 13. Thus, the composite filter assembly 100 can filter the water inside the variable volume water storage component 13 through the first filter material 12, and the composite filter assembly 100 can filter the water outside the variable volume water storage component 13 through the second filter material 14, which helps to improve the cleanliness of the water inside and outside the variable volume water storage component 13. The variable-volume water storage element 13 can store water, allowing the composite filter assembly 100 to hold a certain amount of water. This increases the flow rate when the composite filter assembly 100 is reused, making it more convenient for users. It also allows the composite filter assembly 100 to have both filtration and water storage functions, thus enriching its functionality. Furthermore, the variable-volume water storage element 13 can deform to increase its volume, allowing it to store more water. This eliminates the need for a large water storage structure in the composite filter assembly 100, reducing the space occupied by the variable-volume water storage element 13 and contributing to a smaller overall volume.

[0061] In this embodiment of the invention, unless otherwise explicitly specified or limited, the term "assembly" and other such terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection via an intermediate medium; it can be a connection within two components; it can be merely surface contact; or it can be a surface contact connection via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0062] Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as referring to specific or particular structures. The description of "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In the embodiments of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in the embodiments of this utility model, as well as the features of different embodiments or examples.

[0063] The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the embodiments of the present utility model have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be included within the protection scope of the present utility model.

Claims

1. A composite filter element assembly, characterized in that, include: shell; A first filter material, which is located within the housing; A variable volume water storage device is located in the outer shell and surrounds the outer periphery of the first filter material, and the variable volume water storage device is spaced apart from the first filter material; as well as The second filter material is located in the housing and spaced apart from the variable volume water storage component. The first filter material is located inside the variable volume water storage component, and the second filter material is located outside the variable volume water storage component.

2. The composite filter assembly according to claim 1, characterized in that, The outer shell is provided with a second filter material inlet, a second filter material outlet, a first filter material inlet, and a first filter material outlet. The variable volume water storage component has a first water storage cavity, in which the first filter material is located. The first filter material inlet and the first filter material outlet are both connected to the first water storage cavity. The first filter material inlet is located on the outside of the first filter material, and the first filter material outlet is located on the inside of the first filter material. A second water storage cavity is formed between the variable volume water storage component and the outer shell, in which the second filter material is located. The second filter material inlet and the second filter material outlet are both connected to the second water storage cavity. The second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material. The variable volume water storage device has an inlet state and a drain state. When in the inlet state, the variable volume water storage device expands toward the second water storage chamber under the action of water in the first water storage chamber. When in the drain state, the variable volume water storage device contracts toward the first water storage chamber under the action of water in the second water storage chamber.

3. The composite filter element assembly according to claim 1, characterized in that, The second filter material is disposed around the outer periphery of the variable volume water storage component, and the variable volume water storage component is spaced apart from the inner wall of the second filter material.

4. The composite filter element assembly according to claim 1, characterized in that, The second filter material and the variable volume water storage element are distributed along the height direction of the composite filter element assembly, and the variable volume water storage element is spaced apart from the inner wall of the outer shell.

5. The composite filter assembly according to claim 3 or 4, characterized in that, The composite filter element assembly further includes a flow guide, which surrounds the outer periphery of the variable volume water storage element. The flow guide is connected to the second filter material and the variable volume water storage element. The flow guide is adapted to guide the water filtered by the second filter material so that the water filtered by the second filter material is discharged from the composite filter element assembly.

6. The composite filter assembly according to claim 1, characterized in that, The composite filter element assembly also includes a flow guide, which is attached to the end of the first filter material and the first filter material surrounds the outer periphery of the flow guide. The flow guide is adapted to guide the water filtered by the first filter material so that the water filtered by the first filter material is discharged from the composite filter element assembly.

7. The composite filter element assembly according to claim 1, characterized in that, The variable volume water storage component is made of rubber, silicone, or plastic film.

8. A water purification device, characterized in that, include: Membrane filter assemblies and piping assemblies; as well as According to any one of claims 1 to 7, the conduit assembly is connected to the membrane filter assembly and the composite filter assembly.

9. The water purification equipment according to claim 8, characterized in that, The water purification equipment includes a first solenoid valve, a booster device, and a check valve. The outer casing is provided with a first filter media inlet and a first filter media outlet. The membrane filter assembly includes a membrane filter inlet, a membrane filter outlet, and a drain outlet. The pipeline assembly includes a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline. The first pipeline is connected to the membrane filter inlet. The booster device is located in the first pipeline. The second pipeline is connected to the membrane filter outlet and the first filter media inlet. The first solenoid valve is located in the second pipeline. The third pipeline is connected to the first filter media outlet. The fourth pipeline is connected to the third pipeline and the inlet of the booster device. The check valve is located in the fourth pipeline. The water purification equipment has a reflux stage and a bubble membrane stage. When the water purification equipment is in the reflux stage, the first solenoid valve opens the second pipe, and the water effluent from the membrane filter element returns to the membrane filter element through the second pipe, the composite filter element, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification equipment enters the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve closes, and the water effluent from the composite filter element enters the membrane filter element through the third pipe, the fourth pipe, and the first pipe.

10. The water purification equipment according to claim 9, characterized in that, The pipe assembly further includes a fifth pipe and a sixth pipe. The outer casing is provided with a second filter material inlet and a second filter material outlet. The fifth pipe is connected to the second filter material outlet and the first pipe. The sixth pipe is connected to the second filter material inlet. The water purification device further includes a second solenoid valve, which is located on the fifth pipe. When the water purification equipment is in the reflux stage, the first solenoid valve opens the second pipe, the second solenoid valve opens the fifth pipe, and the composite filter element is adapted to filter water entering from the sixth pipe. The water filtered by the composite filter element enters the membrane filter element through the fifth pipe and the first pipe. The water effluent from the membrane filter element returns to the membrane filter element through the second pipe, the composite filter element, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification equipment is in the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve is closed, the second solenoid valve is closed, and the water effluent from the composite filter element enters the membrane filter element through the third pipe, the fourth pipe, and the first pipe.

11. The water purification equipment according to claim 9, characterized in that, The membrane filter assembly is also provided with a drain outlet, and the water purification equipment also includes a concentrated water solenoid valve and a concentrated water discharge pipe. The concentrated water discharge pipe is connected to the drain outlet, and the concentrated water solenoid valve is installed in the concentrated water discharge pipe. When the water purification equipment is in the reflux stage, the first solenoid valve opens the second pipe, the concentrated water solenoid valve closes, and the effluent from the membrane filter assembly flows back to the membrane filter assembly via the second pipe, the composite filter assembly, the third pipe, the fourth pipe, and the first pipe. After the reflux stage, the water purification equipment is in the bubble membrane stage. When the water purification equipment is in the bubble membrane stage, the first solenoid valve closes, the concentrated water solenoid valve opens the concentrated water discharge pipe, and the effluent from the variable volume water storage device enters the membrane filter assembly via the third pipe, the fourth pipe, and the first pipe. The concentrated water in the membrane filter assembly is discharged from the concentrated water discharge pipe.

12. The water purification device according to any one of claims 9 to 11, characterized in that, The variable volume water storage device has a first water storage cavity, the first filter material is located in the first water storage cavity, the first filter material inlet and the first filter material outlet are both connected to the first water storage cavity, the first filter material inlet is located on the outside of the first filter material, the first filter material outlet is located on the inside of the first filter material, a second water storage cavity is formed between the variable volume water storage device and the outer shell, the second filter material is located in the second water storage cavity, the second filter material inlet and the second filter material outlet are both connected to the second water storage cavity, the second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material; The variable volume water storage device has a water inlet state, and the variable volume water storage device in the water inlet state expands toward the second water storage chamber under the action of the water in the first water storage chamber.

13. The water purification device according to any one of claims 9 to 11, characterized in that, The variable volume water storage device has a first water storage cavity, the first filter material is located in the first water storage cavity, the first filter material inlet and the first filter material outlet are both connected to the first water storage cavity, the first filter material inlet is located on the outside of the first filter material, the first filter material outlet is located on the inside of the first filter material, a second water storage cavity is formed between the variable volume water storage device and the outer shell, the second filter material is located in the second water storage cavity, the second filter material inlet and the second filter material outlet are both connected to the second water storage cavity, the second filter material inlet is located on the outside of the second filter material, and the second filter material outlet is located on the inside of the second filter material; The variable volume water storage device has a drainage state, and when in the drainage state, the variable volume water storage device contracts toward the first water storage chamber under the action of the water in the second water storage chamber.

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