Self-cleaning method of a water purification filter

Abstract

The application relates to the technical field of water purification filter cartridges, and discloses a self-cleaning continuous water purification filter cartridge and a self-cleaning method, which comprise a filter cylinder, a first cleaning brush, a first filter cartridge, a second cleaning brush, a second filter cartridge, a center cylinder, an upper end inner cover, an upper end outer cover, a lower end inner cover and a lower end outer cover, the first cleaning brush and the second cleaning brush are connected to form a first filter cavity, the second cleaning brush and the center cylinder are connected to form a second filter cavity, a water inlet end is connected to the upper end inner cover to be alternately communicated with the first filter cavity and the second filter cavity, a water outlet end is connected to the lower end outer cover, the lower end inner cover and the center cylinder to be alternately communicated with the first filter cavity and the second filter cavity, and a water outlet end is connected to the lower end inner cover to be alternately communicated with the first filter cavity and the second filter cavity; at least one of the first filter cavity and the second filter cavity is in a water purification state. Through the technical scheme, the technical problem that a water purification filter cartridge needs to be disassembled and cleaned and the water purifier cannot continuously purify water due to cleaning in the prior art is solved.

Description

[0001] This application is a divisional application of application number 2022116660843, application date December 23, 2022, and invention name “A self-cleaning continuous water purification filter element and self-cleaning method”. Technical Field

[0002] The present invention relates to the technical field of water purification filter elements, and in particular to a self-cleaning continuous water purification filter element and a self-cleaning method. Background Art

[0003] With the increasing water pollution, water purifiers have entered many ordinary households. While many families have purified their drinking water, a problem has arisen: many families fail to grasp the timing of replacing the filter or forget to replace the filter, causing problems with the water purifier. We all know that the most important part of a water purifier is the filter, as it is related to the quality of water purification.

[0004] In the prior art, water purification filter cartridges are often removed and replaced to maintain efficient water purification effects. However, this method often requires stopping the water purifier for replacement, which is time-consuming and labor-intensive. In addition, replacing the filter cartridge also increases the cost. Although some filter cartridges that can be cleaned and reused have appeared, they are difficult to clean due to thick scale accumulation. Frequent disassembly will give the user a poor experience. Based on the above problems, a new water purification filter cartridge is urgently needed to solve the above problems. Summary of the Invention

[0005] The present invention provides a self-cleaning continuous water purification filter element and a self-cleaning method, which solves the technical problem in the prior art that the water purification filter element needs to be disassembled and cleaned and the cleaning may cause the water purifier to be unable to purify water continuously.

[0006] The technical solutions of the present invention are as follows:

[0007] 14. The filter cartridge of claim 13, wherein the filter cartridge further comprises a first cleaning brush, a first filter element, a second cleaning brush, a second filter element, and a center cylinder. The filter cartridge further comprises an upper inner cover and an upper outer cover arranged at the upper end of the filter cartridge, and a lower inner cover and a lower outer cover arranged at the lower end of the filter cartridge. A first filter chamber is formed between the first cleaning brush and the second cleaning brush, and a second filter chamber is formed between the second cleaning brush and the center cylinder. The upper outer cover comprises a water inlet and a water outlet, the water inlet is alternately connected to the first filter chamber and the second filter chamber by means of the upper inner cover, the water outlet is alternately connected to the first filter chamber and the second filter chamber by means of the lower outer cover, the lower inner cover, and the center cylinder. The lower outer cover comprises a drainage end, the drainage end is alternately connected to the first filter chamber and the second filter chamber by means of the lower inner cover, and at least one of the first filter chamber and the second filter chamber is in a water purification state.

[0008] The upper end outer cover and the lower end outer cover are both rotatably arranged at the two ends of the filter cartridge, the upper end inner cover has an upper flow channel, and the lower end inner cover has a lower flow channel, the upper flow channel is connected with both the first filter chamber and the second filter chamber, the first filter chamber and the second filter chamber are alternately connected with the central cylinder by means of the lower flow channel, the water outlet end is connected with the central cylinder, the upper end outer cover has a cleaning flow channel, one end of the cleaning flow channel is connected with the water outlet end, and the other end of the cleaning flow channel can be selectively connected with the first filter chamber and the second filter chamber.

[0009] The upper flow channel includes a first cavity inlet channel, a first cavity cleaning channel, a second cavity inlet channel, and a second cavity cleaning channel; the lower flow channel includes a first cavity outlet channel, a first cavity drainage channel, a second cavity outlet channel, and a second cavity drainage channel; the lower end outer cover has a first outlet channel, a second outlet channel, a first drainage channel, and a second drainage channel;

[0010] When the first cavity inlet channel is connected to the water inlet end, the first cavity outlet channel is connected to the first outlet channel, the cleaning channel is connected to the second cavity cleaning channel, and the second cavity drainage channel is connected to the second drainage channel;

[0011] When the two-chamber inlet channel is connected to the water inlet end, the two-chamber outlet channel is connected to the second outlet channel, the cleaning channel is connected to the one-chamber cleaning channel, and the one-chamber drain channel is connected to the first drain channel.

[0012] The first filter chamber is divided into a first filter chamber and a second filter chamber by the first filter element, and the second filter chamber is divided into a third filter chamber and a fourth filter chamber by the second filter element. The one-chamber inlet channel and the one-chamber outlet channel are both connected to the first filter chamber, the one-chamber cleaning channel and the one-chamber outlet channel are connected to the second filter chamber, the two-chamber inlet channel and the two-chamber outlet channel are connected to the third filter chamber, and the two-chamber cleaning channel and the two-chamber outlet channel are connected to the fourth filter chamber.

[0013] It also includes a first cleaning switch and a second cleaning switch arranged on the upper end outer cover, the first cleaning switch and the second cleaning switch are arranged in the cleaning flow channel, the first cleaning switch controls the on and off of the one-chamber cleaning channel, and the second cleaning switch controls the on and off of the two-chamber cleaning channels.

[0014] An annular groove is provided on the upper inner cover and the lower inner cover, and positioning bosses are provided at both ends of the first cleaning brush, the first filter element, the second filter element and the central tube, and the positioning bosses are inserted into the annular grooves.

[0015] Positioning ring grooves are provided on the sides of the upper inner cover and the lower inner cover, and a positioning boss is provided on the inner side of the filter cartridge. The positioning boss is inserted into the positioning ring groove, and the cross sections of the positioning ring groove and the positioning boss are both conical.

[0016] The first cleaning brush and the second cleaning brush are both rotatably arranged in the filter cartridge, and a plurality of brush heads are arranged on the inner sides of the first cleaning brush and the second cleaning brush.

[0017] It also includes a cleaning drive member, which is arranged on the lower end inner cover. There are at least two cleaning drives, and the cleaning drive member is used to drive the first cleaning brush and the second cleaning brush to rotate.

[0018] The two cleaning drive members are located outside the first cleaning brush and the second cleaning brush respectively. A gear ring is provided at the bottom of the first cleaning brush and the second cleaning brush. The output end of the cleaning drive member is a gear, and the output end of the cleaning drive member is engaged with the gear ring.

[0019] A self-cleaning method for a water purification filter element comprises the following steps:

[0020] S100: connecting the water inlet to the first filter chamber and the water outlet to the first filter chamber to purify water, while disconnecting the second filter chamber from the water inlet;

[0021] S200: Rotate the second cleaning brush to clean the fouling side of the second filter element;

[0022] S300: Connecting the second filter chamber to the drainage end to discharge clean impurities, and disconnecting the second filter chamber from the drainage end after cleaning is completed;

[0023] S400: After the first filter chamber is fouled, the second filter chamber is connected to the water inlet, and the water outlet is connected to the second filter chamber to purify water, while the first filter chamber is disconnected from the water inlet;

[0024] S500: rotating the first cleaning brush to clean the fouling side of the first filter element;

[0025] S600: Connect the first filter chamber and the drainage end to discharge the cleaned impurities. After cleaning is completed, disconnect the first filter chamber and the drainage end, and then repeat step S100.

[0026] The working principle and beneficial effects of the present invention are:

[0027] In the present invention, two filter cavities are arranged in the filter element, and the working states of the two filter cavities are controlled so that when one of the filter cavities is purifying water, the cleaning brush in the other filter cavity cleans the filter element, so that the filter element does not need to be removed from the water purifier for cleaning. The online self-cleaning filter element can clean the filter element without affecting the water purification, so continuous water purification can be achieved, and the user experience is relatively high. On the other hand, the filter element is cleaned regularly and cleaned when the scale accumulation on the surface of the filter element is not thick. On the one hand, it can maintain a strong filtering effect of the filter element, and on the other hand, it can also extend the service life of the filter element and reduce the user's usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 Schematic diagram of the overall structure of the filter element in the present invention;

[0030] Figure 2 A top view of the internal structure of the filter element of the present invention;

[0031] Figure 3 Schematic diagram of the working state of the filter element in the present invention Figure 1 , which shows a schematic diagram of the structure of the first filter chamber water purification state and the second filter cleaning state;

[0032] Figure 4 Schematic diagram of the working state of the filter element in the present invention Figure 2 , which shows a schematic diagram of the structure of the second filter chamber water purification state and the first filter cleaning state;

[0033] Figure 5 forFigure 4 A partial enlarged view of point A in the middle shows the connection structure between the positioning boss and the positioning shoulder;

[0034] Figure 6 A diagram showing the steps of the self-cleaning method of the present invention;

[0035] In the figure: 1. Filter cartridge, 2. First cleaning brush, 3. First filter element, 4. Second cleaning brush, 5. Second filter element, 6. Center tube, 7. Upper inner cover, 8. Upper outer cover, 9. Lower inner cover, 10. Lower outer cover, 11. Water inlet, 12. Water outlet, 13. Drain, 14. Cleaning channel, 15. One-chamber inlet channel, 16. One-chamber cleaning channel, 17. Two-chamber inlet channel, 18. Two-chamber cleaning channel, 19. One-chamber outlet channel, 20. One-chamber drainage channel, 21. Two-cavity outlet channel, 22. Two-cavity drainage channel, 23. First outlet channel, 24. Second outlet channel, 25. First drainage channel, 26. Second drainage channel, 27. First filter chamber, 28. Second filter chamber, 29. Third filter chamber, 30. Fourth filter chamber, 31. First cleaning switch, 32. Second cleaning switch, 33. Annular groove, 34. Positioning boss, 35. Positioning ring groove, 36. Positioning boss, 37. Brush head, 38. Cleaning drive member, 39. Ring gear. DETAILED DESCRIPTION

[0036] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] like Figures 1-6As shown, the self-cleaning continuous water filter cartridge comprises a filter cylinder 1, a first cleaning brush 2, a first filter core 3, a second cleaning brush 4, a second filter core 5, a center cylinder 6 arranged from outside to inside in sequence, an upper end inner cover 7 and an upper end outer cover 8 arranged on the upper end of the filter cylinder 1, a lower end inner cover 9 and a lower end outer cover 10 arranged on the lower end of the filter cylinder 1, a first filter cavity between the first cleaning brush 2 and the second cleaning brush 4, a second filter cavity between the second cleaning brush 4 and the center cylinder 6, a water inlet end 11 and a water outlet end 12 on the upper end outer cover 8, the water inlet end 11 being communicated with the first filter cavity and the second filter cavity alternately through the upper end inner cover 7, the water outlet end 12 being communicated with the first filter cavity and the second filter cavity alternately through the lower end outer cover 10, the lower end inner cover 9 and the center cylinder 6, the lower end outer cover 10 having a drainage end 13, the drainage end 13 being communicated with the first filter cavity and the second filter cavity alternately through the lower end inner cover 9, and at least one of the first filter cavity and the second filter cavity being in a water purification state.

[0038] In the embodiment, the structure of the filter core is in a cylindrical shape, different radii are designed according to different levels, and the filter cylinder 1, the first cleaning brush 2, the first filter core 3, the second cleaning brush 4, the second filter core 5 and the center cylinder 6 are arranged from outside to inside in sequence, and cover bodies are arranged at both ends to fix the positions, wherein the upper end inner cover 7 and the lower end inner cover 9 position each layer in the filter cylinder 1, the first cleaning brush 2, the second cleaning brush 4 and the center cylinder 6 separate different filter cavities to form the first filter cavity and the second filter cavity, the working states of the first filter cavity and the second filter cavity are controlled through the upper end outer cover 8 and the lower end outer cover 10 at the outermost end, so that at least one of them is in a water purification state, the communication state between the water inlet end 11 and the first filter cavity and the second filter cavity is adjusted by rotating the upper end outer cover 8, the communication state between the water outlet end 12 and the first filter cavity and the second filter cavity is adjusted by rotating the lower end outer cover 10, and the alternating communication is realized, while the drainage end 13 is adjusted at the same time as the communication state of the water outlet end 12 is adjusted through the lower end outer cover 10, so that the cavity in the water purification state is communicated with the water inlet end 11 and the water outlet end 12, and the cavity in the cleaning state is communicated with the drainage end 13, and the cavity in the cleaning state is cleaned through the first cleaning brush 2 or the second cleaning brush 4.

[0039] The upper end outer cover 8 and the lower end outer cover 10 are both rotatably arranged at the two ends of the filter cartridge 1, the upper end inner cover 7 has an upper flow channel, and the lower end inner cover 9 has a lower flow channel. The upper flow channel is connected to the first filter chamber and the second filter chamber, and the first filter chamber and the second filter chamber are alternately connected to the central tube 6 by means of the lower flow channel. The water outlet end 12 is connected to the central tube 6, and the upper end outer cover 8 has a cleaning flow channel 14. One end of the cleaning flow channel 14 is connected to the water outlet end 12, and the other end of the cleaning flow channel 14 can be selectively connected to the first filter chamber and the second filter chamber.

[0040] In this embodiment, the upper inner cover 7 is designed with an upper flow channel, and the lower inner cover 9 is designed with a lower flow channel. The upper inner cover 7 and the lower inner cover 9 are both connected to the first filter chamber and the second filter chamber through the flow channel. Then, by rotating the upper outer cover 8 and the lower outer cover 10, the water outlet end 12, the water inlet end 11 and the drainage end 13 are selectively connected and combined with the first filter chamber and the second filter chamber, so that the first filter chamber and the second filter chamber can work separately and operate independently, that is, they can purify water and clean themselves at the same time. Regarding cleaning, in this embodiment, a cleaning channel is provided on the upper outer cover 8, and the cleaning channel can introduce a part of the water from the water outlet end 12 into the cleaning cavity to achieve reverse cleaning, further improve the cleaning effect, and discharge the impurities cleaned by the cleaning brush from the cavity through the drainage end 13 without residue.

[0041] The upper flow channel includes a first cavity inlet channel 15, a first cavity cleaning channel 16, a second cavity inlet channel 17, and a second cavity cleaning channel 18. The lower flow channel includes a first cavity outlet channel 19, a first cavity drainage channel 20, a second cavity outlet channel 21, and a second cavity drainage channel 22. The lower end outer cover 10 has a first outlet channel 23, a second outlet channel 24, a first drainage channel 25, and a second drainage channel 26.

[0042] When the first chamber inlet channel 15 is connected to the water inlet end 11, the first chamber outlet channel 19 is connected to the first outlet channel 23, the cleaning channel 14 is connected to the second chamber cleaning channel 18, and the second chamber drain channel 22 is connected to the second drain channel 26;

[0043] When the two-chamber inlet channel 17 is connected to the water inlet end 11 , the two-chamber outlet channel 21 is connected to the second outlet channel 24 , the cleaning channel 14 is connected to the one-chamber cleaning channel 16 , and the one-chamber drain channel 20 is connected to the first drain channel 25 .

[0044] In this embodiment, the upper flow channel and the lower flow channel are specifically divided into multiple flow channels to form a connection with the first cavity and the second cavity, and the water inlet end 11 and the cleaning flow channel 14 of the upper outer cover 8 can be alternately connected with the first filter cavity and the second filter cavity by rotation. Specifically, the water inlet end 11 and the cleaning flow channel 14 are a group, the one-cavity inlet channel 15, the two-cavity cleaning channel 18 and the two-cavity inlet channel 17, the one-cavity cleaning channel 16 are each a group and form a corresponding relationship when the upper outer cover 8 rotates, thereby forming connection and switching; similarly, the first outlet channel 23, the second drainage channel 26 on the lower outer cover 10 correspond to the one-cavity outlet channel 19 and the two-cavity drainage channel 22, and the second outlet channel 24, the first drainage channel 25 correspond to the two-cavity outlet channel 21 and the one-cavity drainage channel 20, thereby forming connection and switching.

[0045] The first filter chamber is divided into a first filter chamber 27 and a second filter chamber 28 by the first filter element 3, and the second filter chamber is divided into a third filter chamber 29 and a fourth filter chamber 30 by the second filter element 5. The one-chamber inlet channel 15 and the one-chamber outlet channel 20 are both connected to the first filter chamber 27, the one-chamber cleaning channel 16 and the one-chamber outlet channel 19 are connected to the second filter chamber 28, the two-chamber inlet channel 17 and the two-chamber outlet channel 22 are connected to the third filter chamber 29, and the two-chamber cleaning channel 18 and the two-chamber outlet channel 21 are connected to the fourth filter chamber 30.

[0046] In this embodiment, it is further refined that the first filter chamber and the second filter chamber are divided by the filter element, wherein the first filter chamber is divided into a first filter chamber 27 and a second filter chamber 28; the second filter chamber is divided into a third filter chamber 29 and a fourth filter chamber 30, and the flow channel on the upper end inner cover 7 and the flow channel on the lower end inner cover 9 are connected to them accordingly. With this connection method, when cleaning, the clean water returned from the water outlet end 12 can be flushed from the non-scaling side of the filter element to the scaling side, thereby further improving the cleaning effect.

[0047] It also includes a first cleaning switch 31 and a second cleaning switch 32 arranged on the upper end outer cover 8. The first cleaning switch 31 and the second cleaning switch 32 are arranged in the cleaning flow channel 14. The first cleaning switch 31 controls the on-off of the one-chamber cleaning channel 16, and the second cleaning switch 32 controls the on-off of the two-chamber cleaning channels.

[0048] In this embodiment, a first cleaning switch 31 and a second cleaning switch 32 are provided in the cleaning flow channel 14 to control which cavity the clean water is poured into when cleaning the two cavities. The first cleaning switch 31 and the second cleaning switch 32 can be implemented by manual valves or electric valves. For example, the first cleaning switch and the second cleaning switch can be driven by a telescopic device to seal the plug in the channel.

[0049] An annular groove 33 is provided on the upper inner cover 7 and the lower inner cover 9 , and positioning bosses 34 are provided at both ends of the first cleaning brush 2 , the first filter element 3 , the second filter element 5 and the central tube 6 , and the positioning bosses 34 are inserted into the annular groove 33 .

[0050] In this embodiment, the upper inner cover 7 and the lower inner cover 9 are used to fix the components of each layer in the filter cartridge 1. In order to enable each component to maintain a stable distance and to ensure the stability of the filter cavity space, the upper inner cover 7 and the lower inner cover 9 are both provided with annular grooves 33 to position the components, and positioning bosses 34 are provided at the ends of each component for cooperation.

[0051] The upper inner cover 7 and the lower inner cover 9 are provided with positioning ring grooves 35 on their sides, and the inner side of the filter cartridge 1 is provided with positioning bosses 36 , which are inserted into the positioning ring grooves 35 . The cross sections of the positioning ring grooves 35 and the positioning bosses 36 are both conical.

[0052] In this embodiment, the upper inner cover 7 and the lower inner cover 9 are also snap-fitted to the filter cartridge 1 to achieve axial stability of the filter element. To facilitate assembly, the positioning ring groove 35 and the positioning boss 36 are both conical to facilitate disassembly and installation.

[0053] The first cleaning brush 2 and the second cleaning brush 4 are both rotatably disposed in the filter cartridge 1 , and a plurality of brush heads 37 are disposed on the inner sides of the first cleaning brush 2 and the second cleaning brush 4 .

[0054] In this embodiment, the cleaning brush is provided with a plurality of brush heads 37 on one side close to the first filter element 3 and the second filter element 5 to clean the surface of the filter element, thereby improving the cleaning effect.

[0055] It also includes a cleaning drive member 38, which is arranged on the lower end inner cover 9. There are at least two cleaning drive members 38, and the cleaning drive members 38 are used to drive the first cleaning brush 2 and the second cleaning brush 4 to rotate.

[0056] The two cleaning drive members 38 are located on the outside of the first cleaning brush 2 and the second cleaning brush 4 respectively. A gear ring 39 is provided at the bottom of the first cleaning brush 2 and the second cleaning brush 4. The output end of the cleaning drive member 38 is a gear, and the output end of the cleaning drive member 38 is engaged with the gear ring 39.

[0057] In this embodiment, the first cleaning brush 2 and the second cleaning brush 4 clean the surface of the filter element by means of a rotational action. In this embodiment, a cleaning drive 38 drives the cleaning brushes for cleaning. The specific structure adopts a gear meshing ring gear 39. The output end of the cleaning drive 38 rotates to drive the cleaning brushes to clean the filter element.

[0058] A self-cleaning method of a water purification filter element, comprising the following steps:

[0059] S100: the water inlet end 11 is communicated with the first filter cavity, the water outlet end 12 is communicated with the first filter cavity, water purification is carried out, and the second filter cavity is disconnected from the water inlet end 11;

[0060] S200: the second cleaning brush 4 is rotated to clean the fouling side of the second filter element 5;

[0061] S300: the second filter cavity is connected with the water outlet end 13, and cleaning impurities are discharged; after cleaning is completed, the second filter cavity is disconnected from the water outlet end 13;

[0062] S400: after the first filter cavity is fouled, the second filter cavity is communicated with the water inlet end 11, the water outlet end 12 is communicated with the second filter cavity, water purification is carried out, and the first filter cavity is disconnected from the water inlet end 11;

[0063] S500: the first cleaning brush 2 is rotated to clean the fouling side of the first filter element 3;

[0064] S600: the first filter cavity is connected with the water outlet end 13, and cleaning impurities are discharged; after cleaning is completed, the first filter cavity is disconnected from the water outlet end 13, and then the step S100 is repeated.

[0065] In the embodiment, a self-cleaning method of a water purification filter element is provided. The steps of the self-cleaning method do not affect the protection scope of the application when the order of the related steps is changed without deviating from the technical concept of the application. The core concept is that one filter cavity is used for water purification while the other filter cavity is used for cleaning. Manual switching or electric switching can be adopted, and the interval of simultaneous switching can be regular switching or manual switching. The above technical solution can realize online self-cleaning, improve the service life of the filter element, and realize the technical effect that the water purifier does not stop water purification during the cleaning process.

[0066] The above is only a preferred embodiment of the application and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A self-cleaning method for a water purification filter element, characterized in that: The cleaning brush is placed in the filter housing, and the cleaning brush is placed in the filter housing, so that the cleaning brush is placed in the filter housing, and the cleaning brush is placed in the filter housing, so that the cleaning brush is placed in the filter housing, and the cleaning brush is placed in the filter housing, so that the cleaning brush is placed in the filter housing, and the cleaning brush is placed in the filter housing, so that the cleaning brush is placed in the S100: connecting the water inlet (11) to the first filter chamber, and connecting the water outlet (12) to the first filter chamber to purify water, while disconnecting the second filter chamber from the water inlet (11); S200: rotating the second cleaning brush (4) to clean the fouling side of the second filter element (5); S300: connecting the second filter chamber and the drainage end (13) to discharge the cleaning impurities, and disconnecting the second filter chamber and the drainage end (13) after the cleaning is completed; S400: After the first filter chamber is fouled, the second filter chamber is connected to the water inlet (11), and the water outlet (12) is connected to the second filter chamber to purify water, while the first filter chamber is disconnected from the water inlet (11); S500: rotating the first cleaning brush (2) to clean the fouling side of the first filter element (3); S600: Connect the first filter chamber and the drainage end (13) to discharge the cleaned impurities. After the cleaning is completed, disconnect the first filter chamber and the drainage end (13), and then repeat step S100.

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