Filter element device and water purification equipment

Abstract

The filter element device comprises a first space, a second space, a first water channel, a water inlet and a backflow port, an RO filter element is arranged in the first space, a rear filter element is arranged in the second space, the first space is communicated with the second space through the first water channel, and the water inlet is communicated with the backflow port. Water filtered by the RO filter element flows into the second space through the first water channel, the water inlet is communicated with the first space and supplies water to the first space, the water inlet is connected with the water inlet pipeline, the backflow port is connected with the backflow pipeline and connects the first water channel and the water inlet pipeline, and the backflow pipeline has a closed state and an open state. When the filter element device performs backflow flushing on the RO filter element, water flow does not pass through the rear filter element, so that the rear filter element is prevented from being polluted, and the backflow efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier technical field especially relates to a filter core device and water purification equipment. BACKGROUND

[0002] The ROC composite filter core includes an RO filter core and a post filter core, and the water filtered by the RO filter core is filtered by the post filter core to improve the taste. The RO filter core is prone to concentration polarization under the condition of long-term non-use, resulting in an increase in the TDS of the first cup of water. In order to solve this problem, the ROC composite filter core needs to perform backflow flushing on the RO filter core after water production is completed, and the water for backflow flushing needs to pass through the post filter core, which affects the backflow efficiency and also causes pollution of the post filter core.

[0003] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0004] In view of the problems pointed out in the background technology, the utility model provides a filter core device and water purification equipment. When the RO filter core is backflow flushed, the water flow does not pass through the post filter core, thereby avoiding pollution of the post filter core and improving the backflow efficiency.

[0005] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical solutions:

[0006] In some embodiments of the present application, a filter core device is provided, which includes:

[0007] A first space is internally provided with an RO filter core;

[0008] A second space is internally provided with a post filter core;

[0009] A first water channel communicates the first space with the second space, and the water filtered by the RO filter core flows into the second space through the first water channel;

[0010] A water inlet communicates with the first space and supplies water into the first space, and the water inlet is connected with a water inlet pipeline;

[0011] A backflow port is connected with a backflow pipeline and is used to connect the first water channel and the water inlet pipeline, and the backflow pipeline has a closed state and an open state.

[0012] In some embodiments of the present application, the filter core device includes a second water channel, which communicates with the second space, and the water filtered by the post filter core flows out through the second water channel.

[0013] In some embodiments of the present application, the first water channel and the second water channel are arranged in the first space.

[0014] In some embodiments of the present application, the filter element device comprises a first tube and a second tube, the first tube and the second tube are arranged in the first space, the first water channel is formed between the first tube and the second tube, and the second water channel is formed in the second tube.

[0015] In some embodiments of the present application, the RO filter element is arranged around the first tube, and a water passage is arranged on the wall of the first tube to communicate the first water channel with the first space.

[0016] In some embodiments of the present application, the filter element device further comprises a first shell, the first shell encloses the second space, and the first tube is connected with the first shell.

[0017] In some embodiments of the present application, an end cover is arranged in the second space, the end cover limits the rear filter element in the second space, and the second tube is connected with the end cover.

[0018] In some embodiments of the present application, the filter element device comprises a shell, the first space and the second space are formed in the shell.

[0019] In some embodiments of the present application, the filter element device comprises a first shell and a second shell, the first space is formed in the first shell, the second space is formed in the second shell, and the first shell is connected with the second shell.

[0020] In some embodiments of the present application, a water purification device is further provided, comprising a water inlet pipeline, a backflow pipeline and a water outlet pipeline, the water outlet pipeline has a conducting state and a disconnected state, and the water purification device further comprises the filter element device as described above.

[0021] Compared with the prior art, the filter element device has the following advantages and positive effects:

[0022] The filter element device disclosed in the present application comprises an RO filter element and a rear filter element, is a composite filter element device, the water channel of the RO filter element and the water channel of the rear filter element are separated from each other, and when the RO filter element is backwashed, the water flow can not pass through the rear filter element by increasing the backflow pipeline, so that the rear filter element is prevented from being polluted, and the backflow efficiency is improved.

[0023] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 An application diagram of the filter element device according to some embodiments;

[0026] Figure 2 A sectional view of the filter element device according to some embodiments;

[0027] Figure 3 A water path diagram of the filter element device according to some embodiments;

[0028] Figure 4 Another water path diagram of the filter element device according to some embodiments.

[0029] Reference signs:

[0030] 10, water inlet pipeline; 11, booster pump; 12, water inlet valve;

[0031] 20, backflow pipeline; 21, backflow valve;

[0032] 30, wastewater pipeline; 31, wastewater valve;

[0033] 40, water outlet pipeline; 41, water outlet valve;

[0034] 50, pre-filter element;

[0035] 60, filter element device;

[0036] 100, RO filter element;

[0037] 200, post-filter element;

[0038] 310, first water channel; 320, second water channel;

[0039] 410, first pipe barrel; 420, second pipe barrel;

[0040] 500, first shell; 510, first extension rib;

[0041] 600, outer shell; 611, water inlet; 612, first water outlet; 613, second water outlet; 614, third water outlet; 621, third extension rib; 622, fourth extension rib; 623, fifth extension rib; 624, first annular groove; 625, second annular groove;

[0042] 710, first end cap; 711, second extension rib; 720, second end cap; 730, outer end cap;

[0043] 810, first space; 820, second space. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0047] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the first feature "on", "above" and "under" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0049] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0050] In some embodiments of the present application, a water purification device such as a water purifier is provided. The water purification device comprises a filter element device 60, Figure 1 An application diagram of the filter element device 60, Figure 2 A sectional view of the filter element device 60.

[0051] The filter element device 60 comprises a first space 810 and a second space 820, the first space 810 is provided with an RO filter element 100, and the second space 820 is provided with a post-filter element 200. The post-filter element 200 can be an activated carbon filter element, and the present embodiment is not specifically limited.

[0052] The filter element device 60 further comprises a first water channel 310. The first water channel 310 communicates the first space 810 with the second space 820, and the water filtered by the RO filter element 100 flows into the second space 820 through the first water channel 310.

[0053] In other words, the water to be filtered first enters the first space 810, is filtered by the RO filter element 100 to obtain first-stage filtered water, and the first-stage filtered water enters the second space 820 through the first water channel 310, and is filtered again by the post-filter element 200 and then flows out.

[0054] The filter core device 60 further comprises a water inlet and a backflow port. The water purification device comprises a water inlet pipeline 10 and a backflow pipeline 20. The water inlet is connected with the water inlet pipeline 10, the water inlet pipeline 10 is communicated with the first space 810, and water is supplied into the first space 810. The backflow port is connected with the backflow pipeline 20, the backflow pipeline 20 is connected with the first water channel 310 and the water inlet pipeline 10, and the backflow pipeline 20 has a closed state and an open state.

[0055] Specifically, during normal water production, referring to Figure 3 , the backflow pipeline 20 is closed, that is, the backflow pipeline is in a disconnected state, and water needing to be filtered flows into the first space 810 through the water inlet pipeline 10, is filtered by the RO filter core 100 to obtain first-stage filtered water, flows into the second space 820 through the first water channel 310, is filtered again by the post-filter core 200, and then flows out for use by a user. Figure 3 The solid arrows in the middle represent the flow path of filtered water, the dashed arrows represent the flow path of water filtered by the post-filter core 200, and the three-line arrows represent the flow path of waste water.

[0056] When backflow flushing of the RO filter core 100 is needed, referring to Figure 4 , the backflow pipeline 20 is opened, that is, the backflow pipeline 20 is in a water path conducting state, water flows into the first space 810 through the water inlet pipeline 10 to perform backflow flushing of the RO filter core 100, and the flushed water can not flow through the post-filter core 200 but flows to the water inlet pipeline 10 through the backflow pipeline 20 to perform multiple backflow flushing of the RO filter core 100. Figure 4 The solid arrows in the middle represent the flow path of backflow water, and the three-line arrows represent the flow path of waste water.

[0057] The filter core device 60 in the embodiment comprises the RO filter core 100 and the post-filter core 200, is a composite filter core device 60, the water path of the RO filter core 100 and the water path of the post-filter core 200 are separated from each other, the backflow pipeline 20 is added, so that when backflow flushing of the RO filter core 100 is performed, water flow can not pass through the post-filter core 200, pollution of the post-filter core 200 is avoided, and backflow efficiency is improved.

[0058] In some embodiments of the present application, the water purification device further comprises a water outlet pipeline 40, and water filtered by the post-filter core 200 flows out through the water outlet pipeline 40 for use by a user.

[0059] The water outlet pipeline 40 is provided with a water outlet valve 41, and the water outlet pipeline 40 is controlled to be conducted or disconnected through the water outlet valve 41.

[0060] In some embodiments of the present application, the water purification device further comprises a waste water pipeline 30, and the waste water pipeline 30 is communicated with the first space 810. Waste water generated when water is filtered by the RO filter core 100 is discharged through the waste water pipeline 30.

[0061] The first water outlet 612 is arranged on the shell surrounding the first space 810, and the first water outlet 612 is connected with the wastewater pipeline 30. The wastewater generated by the RO filter element 100 is directly discharged through the first water outlet 612 and the wastewater pipeline 30, and a separate water channel for the wastewater does not need to be provided in the interior of the filter element device 60, so that the internal water channel structure of the filter element device 60 is simplified.

[0062] The wastewater pipeline 30 is provided with a wastewater valve 31, and the conduction and disconnection of the wastewater pipeline 30 are controlled through the wastewater valve 31.

[0063] In some embodiments of the present application, the backflow pipeline 20 is provided with a backflow valve 21, and the conduction and disconnection of the backflow pipeline 20 are controlled through the backflow valve 21.

[0064] In some embodiments of the present application, the water inlet pipeline 10 is provided with a booster pump 11, and the connection position of the backflow pipeline 20 and the water inlet pipeline 10 is located at the front end of the booster pump 11. The flow rate and speed of the water flow are adjusted through the booster pump 11.

[0065] The water inlet pipeline 10 is provided with a water inlet valve 12, and the conduction and disconnection of the water inlet pipeline 10 are controlled through the water inlet valve 12.

[0066] In some embodiments of the present application, the filter element device 60 further comprises a second water channel 320, the second water channel 320 is in communication with the second space 820, and the water filtered through the rear filter element 200 flows out through the second water channel 320. The first water channel 310 is isolated from the second water channel 320, so as to avoid mutual pollution between the water channels.

[0067] In some embodiments of the present application, the first water channel 310 and the second water channel 320 are arranged in the first space 810. The water channels are all arranged in the first space 810, and the plurality of water channels are integrally arranged in the first space 810, so that the structure is compact, and the structural design in the second space 820 is simplified.

[0068] Furthermore, the first water channel 310 and the second water channel 320 are arranged in the first space 810, so that corresponding water outlets are arranged on the shell surrounding the first space 810, and the first water channel 310 and the second water channel 320 are in communication with external water channels. The connection positions of the external pipelines are concentrated, and the connection installation is facilitated.

[0069] In some embodiments of the present application, the filter element device 60 comprises a first pipe cylinder 410 and a second pipe cylinder 420, the first pipe cylinder 410 and the second pipe cylinder 420 are arranged in the first space 810, the first water channel 310 is formed between the first pipe cylinder 410 and the second pipe cylinder 420, and the second water channel 320 is formed in the second pipe cylinder 420.

[0070] In other words, the first tube 410 is sleeved on the outer periphery of the second tube 420, the first water channel 310 and the second water channel 320 are formed by the sleeving structure of the two tubes, the mutual isolation of the first water channel 310 and the second water channel 320 is realized, and the water channel structure is compact.

[0071] In some embodiments of the present application, the RO filter core 100 is arranged around the first tube 410, and a water passing hole (not marked) is arranged on the wall of the first tube 410 to communicate the first water channel 310 with the first space 810. The first water channel 310 and the second water channel 320 are arranged in the middle of the RO filter core 100, and extend along the axial direction of the RO filter core 100, and the structure is compact.

[0072] In some embodiments of the present application, the filter core device 60 further comprises a first shell 500, the first shell 500 surrounds the second space 820, and the first tube 410 is connected with the first shell 500. Specifically, the first shell 500 is provided with a first extension rib 510 protruding annularly, one end of the first tube 410 is inserted and fixed with the first extension rib 510, and a sealing ring is arranged at the insertion position of the two. The area surrounded by the first extension rib 510 is an opening, which is marked as a first opening, and the first water channel 310 communicates with the first opening, so that the water in the first water channel 310 flows into the second space 820 through the first opening.

[0073] In some embodiments of the present application, an end cover is arranged in the second space 820, which is marked as a first end cover 710, the first end cover 710 limits the rear filter core 200 in the second space 820, and the second tube 420 is connected with the first end cover 710. Specifically, the first end cover 710 is provided with a second extension rib 711 protruding annularly, one end of the second tube 420 is inserted and fixed with the second extension rib 711, and a sealing ring is arranged at the insertion position of the two.

[0074] The second extension rib 711 is exposed through the above-mentioned first opening, so as to be inserted with the second tube 420. The outer diameter of the second extension rib 711 is smaller than the inner diameter of the first extension rib 510, and a water flowing gap is formed between the two, and the water in the first water channel 310 flows into the second space 820 through the gap.

[0075] One end of the first tube 410 is inserted and sealingly fixed with the first shell 500 in a plug-in manner, and one end of the second tube 420 is inserted and sealingly fixed with the first end cover 710 in a plug-in manner, and the mounting structure is simple and reliable.

[0076] In some embodiments of the present application, the filter core device 60 further comprises a second end cover 720, and the second end cover 720 limits the RO filter core 100 in the first space 810.

[0077] In some embodiments of the present application, the inner end side of the shell enclosing the first space 810 is provided with annular third, fourth and fifth extension ribs 621, 622 and 623. The second end cover 720 is sealingly fixed to the third extension rib 621. The other end of the first cartridge 410 is sealingly fixed to the fourth extension rib 622. The other end of the second cartridge 420 is sealingly fixed to the fifth extension rib 623.

[0078] The first annular groove 624 is formed between the third and fourth extension ribs 621 and 622, and is in communication with the space in which the RO filter element 100 is located. The first water outlet 612 is in communication with the first annular groove 624, and the wastewater generated during the filtration of the RO filter element 100 flows out through the first annular groove 624 and the first water outlet 612.

[0079] The second annular groove 625 is formed between the fourth and fifth extension ribs 622 and 623, and is in communication with the first water channel 310. The second water outlet 613 is provided on the outer end side of the shell enclosing the first space 810, and is in communication with the second annular groove 625. The second water outlet 613 is also connected to the backwashing pipeline 20. When the RO filter element 100 is backwashed, the water in the first water channel 310 flows to the backwashing pipeline 20 through the second annular groove 625 and the second water outlet 613.

[0080] The outer end side of the shell enclosing the first space 810 is also provided with a water inlet 611 and a third water outlet 614. The water inlet 611 is connected to the water inlet pipeline 10, and is in communication with the space in which the RO filter element 100 is located. The third water outlet 614 is opposite to the second cartridge 420, and is in communication with the inner cavity of the second cartridge 420, i.e., the third water outlet 614 is in communication with the second water channel 320.

[0081] The plurality of water outlets are provided on the same end side of the filter element device 60, and the structure is compact and convenient for pipe installation.

[0082] In some embodiments of the present application, with reference to Figure 2 , the filter element device 60 comprises a housing 600, and the housing 600 forms a first space 810 and a second space 820.

[0083] Specifically, the filter element device 60 is of an integrated structure, and the housing 600 is provided with a first shell 500. The first shell 500 divides the internal space of the housing 600 into the first space 810 and the second space 820. The first shell 500 is provided with the post-filter element 200, and the RO filter element 100, the first cartridge 410 and the second cartridge 420 are all arranged in the external space of the first shell 500.

[0084] One end of the shell 600 is provided with an opening, facilitating the inward installation of the internal components. An outer end cover 730 is arranged at the opening, and the outer end cover 730 is provided with water ports. The inner side of the outer end cover 730 is provided with a plurality of extension ribs, so as to insert and fix the second end cover 720, the first tube 410 and the second tube 420.

[0085] In some other embodiments of the present application, the filter element device 60 is of a split structure, and the filter element device 60 comprises a first shell and a second shell. The first shell is internally formed with a first space 810, and the second shell is internally formed with a second space 820. The first shell is connected with the second shell.

[0086] The first shell and the second shell can be connected through spin fusion, buckling or the like. Two independent spaces are respectively formed by the first shell and the second shell, and the water path is conducted after the abutment of the two shells, so as to realize the independent replacement of the RO filter element 100 and the post-filter element 200, and reduce the replacement cost.

[0087] In some embodiments of the present application, the water purification equipment further comprises a pre-filter element 50, such as a PPC filter element, which is connected with the water inlet pipeline 10. The raw water flows into the filter element device 60 after being filtered by the pre-filter element 50.

[0088] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0089] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A filter cartridge arrangement, characterized by The filter core device comprises: a first space in which an RO filter core is arranged; a second space in which a post-filter core is arranged; a first water channel that connects the first space and the second space, and through which water filtered by the RO filter core flows into the second space; a water inlet that is connected to the first space and supplies water into the first space, and is connected to a water inlet pipeline; a backflow port that is connected to a backflow pipeline and is used to connect the first water channel and the water inlet pipeline, and the backflow pipeline has a closed state and an open state.

2. The filter core device according to claim 1, wherein the filter core device comprises a second water channel that is connected to the second space and through which water filtered by the post-filter core flows out.

3. The filter core device according to claim 2, wherein the first water channel and the second water channel are arranged in the first space.

4. The filter core device according to claim 2, wherein the filter core device comprises a first tube and a second tube, the first tube and the second tube are arranged in the first space, the first water channel is formed between the first tube and the second tube, and the second water channel is formed in the second tube.

5. The filter core device according to claim 4, wherein the RO filter core is arranged around the first tube, and a water passage is arranged on a wall of the first tube to connect the first water channel and the first space.

6. The filter core device according to claim 4, wherein the filter core device further comprises a first shell that encloses the second space, and the first tube is connected to the first shell.

7. The filter core device according to claim 4, wherein an end cap is arranged in the second space, the end cap limits the post-filter core in the second space, and the second tube is connected to the end cap.

8. The filter core device according to any one of claims 1 to 7, wherein the filter core device comprises a housing in which the first space and the second space are formed.

9. The filter core device according to any one of claims 1 to 7, wherein the filter core device comprises a first housing in which the first space is formed, and a second housing in which the second space is formed, and the first housing is connected to the second housing. The water purification device comprises a water inlet pipeline, a backflow pipeline, and a water outlet pipeline that has a conducting state and a disconnected state, and further comprises the filter core device according to any one of claims 1 to 9. ​ ​ ​ ​ ​ ​ ​ 10. A water purification apparatus characterized by comprising: ​

Images