A detachable structure of a RO filter core

Abstract

The utility model discloses a kind of RO filter element detachable structure, including the water purifier main body with installation cavity, water purifier main body includes waterway base, filter device is equipped in installation cavity, filter device includes filter shell, upper water outlet cover and lower water outlet cover, filter core structure is equipped in filter shell, filter shell is integrally connected on waterway base, upper water outlet cover is detachably connected on the top of filter shell, lower water outlet cover is detachably connected on waterway base, and upper water outlet cover, lower water outlet cover and filter shell form the filter water chamber of constraint filter core structure between it. The utility model has the following advantages and effects: the scheme utilizes new mechanical structure, has the effect that filter core is conveniently replaced and maintained, and filter core is not prone to water leakage after replacement.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, and in particular to a detachable RO filter element structure. Background Technology

[0002] Chinese Patent CN219009954U discloses a water purifier, including a filter base and a filtration device. A first water inlet is detachably installed on the filter base. A plurality of first water outlets are connected to the filter base when the first water inlet is installed on the filter base. A plurality of second water outlets are connected to the filter base via a water-passing component when the first water inlet is installed on the filter base and the second installation end is installed on the first water inlet. The filtration device includes a first filter element and a second filter element; the first filter element has a first filter shell, and the second filter element has a second filter shell. The water purifier also includes a frame with an inwardly recessed mounting cavity. The filter base is disposed at the bottom of the mounting cavity. The filtration device is detachably inserted into the mounting cavity. The water-passing component includes a transition water outlet disposed within the mounting cavity and a water pipe connecting the transition water outlet and the filter base. The plurality of second water outlets are connected to the transition water outlet when the filtration device is inserted into the mounting cavity.

[0003] However, the above-mentioned water purifier has the following drawbacks: the first and second filter elements of the water purifier can be removed as a whole from the corresponding installation cavity, but the first and second filter elements are removed together with the first and second filter housings. During subsequent installation, the first and second filter housings are prone to improper installation and leakage between the installation position of the installation cavity and the installation housing. This needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable RO filter element structure, which has the advantages of easy filter element replacement and maintenance, and less leakage after filter element replacement.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a detachable RO filter element structure, comprising a water purifier body with an installation cavity, the water purifier body including a water circuit base, a filtration device provided in the installation cavity, the filtration device including a filter shell, an upper water outlet cover and a lower water outlet cover, a filter element structure provided in the filter shell, the filter shell being integrally connected to the water circuit base, the upper water outlet cover being detachably connected to the top of the filter shell, the lower water outlet cover being detachably connected to the water circuit base, and a filtration chamber constraining the filter element structure being formed between the upper water outlet cover, the lower water outlet cover and the filter shell.

[0006] By adopting the above technical solution, this utility model integrates the filter housing of the filtration device directly onto the water circuit base. When replacing the filter element structure, it is only necessary to remove the upper water outlet cover relative to the filter housing to disassemble and maintain the filter element structure. At the same time, the lower water outlet cover can be removed from the water circuit base for cleaning to prevent blockage and water outage. This improves the convenience of maintenance for the upper water outlet cover, filter element structure, and lower water outlet cover. After maintenance, the lower water outlet cover is installed back onto the water circuit base, and then the filter element structure and upper water outlet cover are installed back in sequence. The upper and lower water outlet covers can be used to position the filter element structure inside the water filtration chamber. Since the filter housing is integrally connected to the water circuit base, there will be no water leakage between the filter housing and the water circuit base. This provides the advantages of convenient filter element replacement and maintenance, and less likelihood of water leakage after filter element replacement.

[0007] A further feature of this invention is that the lower water outlet cover has a wastewater outlet sleeve, the water circuit base is provided with a wastewater outlet pipe, and the wastewater outlet sleeve is inserted into the inlet of the wastewater outlet pipe.

[0008] By adopting the above technical solution and the plug-in connection method, the ease of disassembly and assembly between the lower water outlet cover and the water circuit base can be improved.

[0009] A further feature of this invention is that a baffle is provided inside the wastewater outlet sleeve, and a wastewater communication hole is provided through the baffle. The bottom of the filter chamber is connected to the wastewater outlet pipeline through the wastewater communication hole.

[0010] By adopting the above technical solution, the wastewater connection hole allows wastewater to flow from the filter chamber to the wastewater outlet pipe. Since the diameter of the wastewater connection hole is smaller than that of the wastewater outlet sleeve, it is prone to clogging after long-term use. This utility model solves this problem by opening the wastewater connection hole on the lower outlet cover, and the lower outlet cover can be quickly removed from the water circuit base. Even if the wastewater connection hole is blocked, the lower outlet cover can be quickly removed from the main body of the water purifier for cleaning and maintenance.

[0011] A further feature of this invention is that a plurality of first sealing rings are provided between the wastewater outlet sleeve and the inlet of the wastewater outlet pipe.

[0012] By adopting the above technical solution, the first sealing ring can improve the water leakage prevention performance between the wastewater outlet sleeve and the wastewater outlet pipe.

[0013] A further feature of this invention is that the upper water outlet cover extends toward the filter chamber with an annular connecting portion, and the annular connecting portion is threadedly connected to the filter shell.

[0014] By adopting the above technical solution, the threaded connection is firm and easy to operate, which helps to improve the ease of disassembly and assembly between the upper water outlet cover and the filter housing.

[0015] A further feature of this invention is that a second sealing ring is provided between the annular connecting portion and the filter housing.

[0016] By adopting the above technical solution, the second sealing ring can improve the water leakage prevention performance between the upper water outlet cover and the filter shell.

[0017] A further feature of this invention is that the upper water outlet cover has a purified water outlet sleeve, a central tube is provided axially in the water filtration chamber, a plurality of water passage holes are provided through the side wall of the central tube, the end of the central tube near the lower water outlet cover is a closed end, the end of the central tube near the upper water outlet cover is an open end, and the side of the central tube at the open end is inserted and engaged with the purified water outlet sleeve.

[0018] By adopting the above technical solution, it is beneficial to improve the connection between the central pipe and the purified water outlet sleeve, prevent the water circuit from being interrupted due to the shaking and displacement of the central pipe, and the purified water filtered by the filter element structure is discharged from the open end of the central pipe through the water passage hole. The addition of the closed end can effectively prevent the purified water in the central pipe from flowing to the wastewater end.

[0019] A further feature of this invention is that the filter element structure includes a pre-filtration module and a reverse osmosis module, the pre-filtration module and the reverse osmosis module are arranged axially along the central tube in the water filtration chamber, the pre-filtration module is located near the upper water outlet cover, the reverse osmosis module is located near the lower water outlet cover, and the water passage is opened on the outer wall of the central tube in the area where the reverse osmosis module is located.

[0020] By adopting the above technical solution, the pre-filter module can perform coarse filtration on the water source before it enters the reverse osmosis module, reducing the water purification burden on the reverse osmosis module and extending the replacement cycle of the reverse osmosis module. At the same time, the pre-filter module and the reverse osmosis module work together to form a composite filtration, improving the filtration effect of this utility model. The water filtered by the pre-filter module flows to the reverse osmosis module, and the purified water filtered by the reverse osmosis module flows into the central pipe through the water passage and is discharged from the opening end.

[0021] A further feature of this invention is that the pre-filter module includes a pre-filter box assembly, the upper end face of the pre-filter box assembly is provided with a water inlet hole, the lower end face of the pre-filter box assembly is provided with a water outlet hole, a water passage is left between the upper end face of the pre-filter box assembly and the upper water outlet cover, the filter shell is provided with a water inlet channel, and the two ends of the water passage are respectively connected to the water inlet channel and the water inlet hole.

[0022] By adopting the above technical solution, the raw water flowing into the filter housing from the inlet channel flows into the pre-filter assembly through the water inlet hole on the upper end face of the pre-filter assembly through the water gap, and after being filtered by the pre-filter assembly, it flows to the reverse osmosis membrane module for filtration again through the outlet hole on the lower end face.

[0023] A further feature of this invention is that: the edge of the lower water outlet cover extends into the water filtration chamber with an annular anti-detachment part, the annular anti-detachment part is nested and fitted with the reverse osmosis module, and the annular anti-detachment part and the reverse osmosis module are sealed and bonded together by waterproof tape.

[0024] By adopting the above technical solution, the annular anti-detachment part and the waterproof tape work together to improve the installation firmness of the reverse osmosis membrane module on the lower outlet cover.

[0025] In summary, this utility model has the following beneficial effects:

[0026] This water purifier features a filtration device housed within its mounting cavity. The filtration device includes a filter housing, an upper outlet cover, and a lower outlet cover. A filter element structure is housed within the filter housing. The filter housing is integrally connected to the water circuit base, while the upper and lower outlet covers are detachably connected to the filter housing. By directly and integrally mounting the filter housing onto the water circuit base, replacing the filter element structure only requires removing the upper outlet cover relative to the filter housing. Simultaneously, the lower outlet cover can be removed from the water circuit base for cleaning. To prevent the lower water outlet cover from becoming clogged and preventing water from flowing out, this utility model improves the ease of maintenance of the upper water outlet cover, filter element structure, and lower water outlet cover. After maintenance, the lower water outlet cover is installed back onto the water circuit base, and then the filter element structure and upper water outlet cover are installed back in sequence. The upper and lower water outlet covers can be used to position the filter element structure inside the water filtration chamber. Since the filter shell is integrally connected to the water circuit base, there will be no water leakage between the filter shell and the water circuit base. This has the effect of easy filter element replacement and maintenance, and less leakage after filter element replacement. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of the present invention.

[0028] Figure 2 This is a longitudinal sectional view of the present invention.

[0029] Figure 3 This is a utility model Figure 2 A magnified view of a portion of region A in the middle.

[0030] Figure 4 This is a utility model Figure 2 A magnified view of a portion of region B in the middle.

[0031] Figure 5 This is an exploded view of this utility model.

[0032] Figure 6 This is an exploded view of the pre-filter box assembly of this utility model.

[0033] In the diagram: 1. Water purifier body; 11. Mounting cavity; 12. Water circuit base; 121. Wastewater outlet pipe; 13. Clean water outlet pipe; 131. UV sterilization lamp module; 132. TDS meter; 133. Water outlet; 2. Filtration device; 20. Filter chamber; 21. Filter housing; 22. Upper water outlet cover; 221. Annular connection part; 222. Second sealing ring; 223. Clean water outlet sleeve; 23. Lower water outlet cover; 231. Wastewater outlet sleeve; 232. Baffle; 2321. Wastewater connecting hole; 233. First sealing ring; 234. Annular anti-detachment device. 235. Waterproof tape; 24. Central tube; 240. Water passage hole; 241. Closed end; 242. Open end; 243. Third sealing ring; 244. Flow-through sterilization module; 25. Water inlet channel; 26. Water passage gap; 27. Water passage; 3. Filter element structure; 31. Pre-filter module; 311. Pre-filter box assembly; 311a. Upper shell; 311b. Lower shell; 3111. Water inlet hole; 3112. Water outlet hole; 3113. Mounting hole; 312. Pre-filter media; 32. Reverse osmosis module; 321. Reverse osmosis membrane module. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] A detachable RO filter element structure, such as Figures 1-3 As shown, the water purifier body 1 includes a mounting cavity 11. The water purifier body 1 includes a water circuit base 12. A filter device 2 is provided in the mounting cavity 11. The filter device 2 includes a filter housing 21, an upper water outlet cover 22, and a lower water outlet cover 23. A filter element structure 3 is provided in the filter housing 21. The filter housing 21 is integrally connected to the water circuit base 12. The upper water outlet cover 22 is detachably connected to the top of the filter housing 21. The lower water outlet cover 23 is detachably connected to the water circuit base 12. A water filtration chamber 20 constraining the filter element structure 3 is formed between the upper water outlet cover 22, the lower water outlet cover 23, and the filter housing 21. The water purifier body 1 is provided with a purified water outlet pipe 13. The purified water outlet end of the filter device 2 is connected to the purified water outlet pipe 13. A UV sterilization lamp module 131 and a TDS detector 132 are provided on the purified water outlet pipe 13.

[0036] like Figures 2-5As shown, the lower water outlet cover 23 has a wastewater outlet sleeve 231, and the water circuit base 12 is integrally provided with a wastewater outlet pipe 121, with the inlet of the wastewater outlet pipe 121 facing upwards. The wastewater outlet sleeve 231 is plugged into the inlet of the wastewater outlet pipe 121. This plug-in connection improves the ease of assembly and disassembly between the lower water outlet cover 23 and the water circuit base 12. A baffle 232 is provided inside the wastewater outlet sleeve 231. A wastewater connection hole 2321 is provided at the top, and the bottom of the filter chamber 20 is connected to the wastewater outlet pipe 121 through the wastewater connection hole 2321. The wastewater connection hole 2321 allows wastewater to flow from the filter chamber 20 to the wastewater outlet pipe 121. Since the diameter of the wastewater connection hole 2321 is smaller than that of the wastewater outlet sleeve 231, it is prone to clogging after long-term use. In this utility model, the wastewater connection hole 2321 is opened on the lower outlet cover 23. Furthermore, the lower water outlet cover 23 can be quickly disassembled relative to the water circuit base 12. Even if the wastewater connecting hole 2321 is blocked, the lower water outlet cover 23 can be quickly removed from the main body 1 of the water purifier for cleaning and maintenance. Several first sealing rings 233 are provided between the wastewater outlet sleeve 231 and the inlet of the wastewater outlet pipe 121. The first sealing rings 233 can improve the water leakage prevention performance between the wastewater outlet sleeve 231 and the wastewater outlet pipe 121. The upper water outlet cover 22 extends into the filter chamber 20 with an annular connecting part 221. The annular connecting part 221 is threadedly connected to the filter shell 21. The threaded connection is firm and easy to operate, which helps to improve the ease of disassembly and assembly between the upper water outlet cover 22 and the filter shell 21. A second sealing ring 222 is provided between the annular connecting part 221 and the filter shell 21. The second sealing ring 222 can improve the water leakage prevention performance between the upper water outlet cover 22 and the filter shell 21.

[0037] like Figures 1-6As shown, the upper water outlet cover 22 has a purified water outlet sleeve 223. A central tube 24 is axially arranged inside the water filtration chamber 20. Several water passage holes 240 are formed through the side wall of the central tube 24. The end of the central tube 24 near the lower water outlet cover 23 is a closed end 241, and the end near the upper water outlet cover 22 is an open end 242. The central tube 24, located on one side of the open end 242, is inserted into the purified water outlet sleeve 223, which helps to improve the connection between the central tube 24 and the purified water outlet sleeve 223. The connection between the three components is secure to prevent the central tube 24 from shifting and causing water flow interruption. The purified water filtered by the filter element structure 3 is discharged from the open end 242 of the central tube 24 through the water passage 240. The addition of the closed end 241 effectively prevents purified water in the central tube 24 from flowing to the wastewater end. A third sealing ring 243 is provided between the purified water outlet sleeve 223 and the central tube 24. A flow-through sterilization module 244 is installed inside the central tube 24. The lower end of 4 is the water inlet and the upper end is the water outlet. The filter element structure 3 includes a pre-filter module 31 and a reverse osmosis module 32. The pre-filter module 31 and the reverse osmosis module 32 are arranged axially along the central tube 24 in the water filtration chamber 20. The pre-filter module 31 is located near the upper water outlet cover 22, and the reverse osmosis module 32 is located near the lower water outlet cover 23. The water passage hole 240 is opened on the outer wall of the central tube 24 in the area where the reverse osmosis module 32 is located. The pre-filter module 31 can perform coarse filtration on the water source before entering the reverse osmosis module 32, reduce the water purification burden of the reverse osmosis module 32, and extend the replacement cycle of the reverse osmosis module 32. At the same time, the pre-filter module 31 and the reverse osmosis module 32 work together to form a composite filtration, which improves the filtration effect of this utility model. The water filtered by the pre-filter module 31 flows to the reverse osmosis module 32. The purified water filtered by the reverse osmosis module 32 flows into the central tube 24 through the water passage hole 240 and is discharged from the opening end 242.The reverse osmosis module 32 includes a reverse osmosis membrane assembly 321 wrapped around the central tube 24. The pre-filtration module 31 includes a pre-filter box assembly 311 and a pre-filter media 312 filled inside the pre-filter box assembly 311. The upper end face of the pre-filter box assembly 311 has an inlet hole 3111, and the lower end face of the pre-filter box assembly 311 has an outlet hole 3112. A water passage gap 26 is left between the upper end face of the pre-filter box assembly 311 and the upper outlet cover 22. The outer sides of the reverse osmosis membrane assembly 321 and the pre-filter box assembly 311 are flush with the filter housing. A water passage 27 is formed between the filter housing 21 and the filter housing 21. The filter housing 21 is integrally provided with a water inlet channel 25. The raw water in the water inlet channel 25 is connected to the water inlet hole 3111 through the water passage 27 and the water gap 26 in sequence. This allows the raw water flowing into the filter housing 21 from the water inlet channel 25 and the water gap 26 to flow into the interior of the pre-filter box assembly 311 through the water inlet hole 3111 on the upper end face of the pre-filter box assembly 311. After being filtered by the pre-filter media 312 inside the pre-filter box assembly 311, the water flows out of the pre-filter box assembly 311. The water outlet 3112 on the lower end face flows to the reverse osmosis membrane module 321 for further filtration. In this embodiment, the pre-filter box assembly 311 includes an upper shell 311a and a lower shell 311b. The upper shell 311a and the lower shell 311b are fastened together to form the pre-filter box assembly 311, and a chamber for accommodating the pre-filter media 312 is formed between the upper shell 311a and the lower shell 311b. The edge of the lower water outlet cover 23 extends into the filtration chamber 20 with an annular anti-detachment part 234, which is embedded in the reverse osmosis membrane module 321. The annular anti-detachment part 234 and the reverse osmosis membrane module 321 are sealed and bonded together by waterproof tape 235. The cooperation between the annular anti-detachment part 234 and the waterproof tape 235 can improve the installation firmness of the reverse osmosis membrane module 321 on the lower outlet cover 23. In addition, the pre-filter material 312 in this embodiment is made of activated carbon particles. The activated carbon particles are placed at the high point of the filter device 2. When the device is working, the water will fill the activated carbon. After the device is stopped, the water level will drop to the bottom of the activated carbon device, ensuring that the activated carbon will not be soaked in water.

[0038] The basic working principle of this utility model is as follows: A filter device 2 is provided in the mounting cavity 11 of the water purifier body 1. The filter device 2 includes a filter shell 21, an upper water outlet cover 22, and a lower water outlet cover 23. A filter element structure 3 is provided inside the filter shell 21. The filter shell 21 is integrally connected to the water circuit base 12. The upper water outlet cover 22 and the lower water outlet cover 23 are detachably connected to the filter shell 21. This utility model directly and integrally sets the filter shell 21 of the filter device 2 onto the water circuit base 12. When replacing the filter element structure 3, it is only necessary to remove the upper water outlet cover 22 relative to the filter shell 21 to remove and maintain the filter element structure 3. At the same time, the lower water outlet cover 23 can be removed from the bottom of the water circuit. The lower water outlet cover 23 is disassembled and cleaned to prevent blockage and water outage. This improves the ease of maintenance of the upper water outlet cover 22, filter element structure 3, and lower water outlet cover 23. After maintenance, the lower water outlet cover 23 is reinstalled on the water circuit base 12. Then, the filter element structure 3 and the upper water outlet cover 22 are reinstalled in sequence. The upper water outlet cover 22 and the lower water outlet cover 23 can be used to position the filter element structure 3 inside the water filtration chamber 20. Since the filter shell 21 is integrally connected to the water circuit base 12, there will be no water leakage between the filter shell 21 and the water circuit base 12. This has the effect of easy filter element replacement and maintenance, and less leakage after filter element replacement.

[0039] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A detachable RO filter element structure, comprising a water purifier body (1) having an installation cavity (11), characterized in that: The main body (1) of the water purifier includes a water circuit base (12), and a filter device (2) is provided in the mounting cavity (11). The filter device (2) includes a filter shell (21), an upper water outlet cover (22) and a lower water outlet cover (23). A filter element structure (3) is provided in the filter shell (21). The filter shell (21) is integrally connected to the water circuit base (12). The upper water outlet cover (22) is detachably connected to the top of the filter shell (21). The lower water outlet cover (23) is detachably connected to the water circuit base (12). A water filtration chamber (20) constraining the filter element structure (3) is formed between the upper water outlet cover (22), the lower water outlet cover (23) and the filter shell (21).

2. The detachable RO filter element structure according to claim 1, characterized in that: The lower water outlet cover (23) has a wastewater outlet sleeve (231), and the water circuit base (12) is provided with a wastewater outlet pipe (121). The wastewater outlet sleeve (231) is inserted into the inlet of the wastewater outlet pipe (121).

3. The detachable RO filter element structure according to claim 2, characterized in that: The wastewater outlet sleeve (231) is provided with a baffle (232), and a wastewater communication hole (2321) is provided through the baffle (232). The bottom of the water filtration chamber (20) is connected to the wastewater outlet pipe (121) through the wastewater communication hole (2321).

4. The detachable RO filter element structure according to claim 2, characterized in that: Several first sealing rings (233) are provided between the wastewater outlet sleeve (231) and the inlet of the wastewater outlet pipe (121).

5. The detachable structure of an RO filter element according to claim 1, characterized in that: The upper water outlet cover (22) extends into the water filtration chamber (20) with an annular connecting part (221), and the annular connecting part (221) is threadedly connected to the filter shell (21).

6. The detachable RO filter element structure according to claim 5, characterized in that: A second sealing ring (222) is provided between the annular connecting part (221) and the filter shell (21).

7. The detachable RO filter element structure according to claim 1, characterized in that: The upper water outlet cover (22) has a purified water outlet sleeve (223). A central tube (24) is provided axially inside the water filtration chamber (20). A plurality of water passage holes (240) are provided through the side wall of the central tube (24). The end of the central tube (24) near the lower water outlet cover (23) is set as a closed end (241), and the end of the central tube (24) near the upper water outlet cover (22) is set as an open end (242). The central tube (24) is inserted and matched with the purified water outlet sleeve (223) on the side of the open end (242).

8. The detachable RO filter element structure according to claim 7, characterized in that: The filter element structure (3) includes a pre-filter module (31) and a reverse osmosis module (32). The pre-filter module (31) and the reverse osmosis module (32) are arranged axially along the central tube (24) in the water filtration chamber (20). The pre-filter module (31) is located near the upper water outlet cover (22), and the reverse osmosis module (32) is located near the lower water outlet cover (23). The water passage hole (240) is opened on the outer wall of the central tube (24) in the area where the reverse osmosis module (32) is located.

9. The detachable RO filter element structure according to claim 8, characterized in that: The pre-filter module (31) includes a pre-filter box assembly (311). The upper end face of the pre-filter box assembly (311) is provided with a water inlet hole (3111), and the lower end face of the pre-filter box assembly (311) is provided with a water outlet hole (3112). A water passage gap (26) is left between the upper end face of the pre-filter box assembly (311) and the upper water outlet cover (22). The filter shell (21) is provided with a water inlet channel (25). The two ends of the water passage gap (26) are respectively connected to the water inlet channel (25) and the water inlet hole (3111).

10. A detachable RO filter element structure according to claim 9, characterized in that: The lower water outlet cover (23) has an annular anti-detachment part (234) extending into the water filtration chamber (20) from its edge. The annular anti-detachment part (234) is nested with the reverse osmosis module (32), and the annular anti-detachment part (234) and the reverse osmosis module (32) are sealed and bonded together by waterproof tape (235).

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