Composite filter element and water purifier

Abstract

The invention discloses a composite filter element and a water purifier. The composite filter element comprises a filter bottle, a filter cover, a central pipe, a first filter assembly, a second filter assembly and a filter bottle handle, wherein the filter bottle is covered with the filter cover, filter bottle handle mounting grooves are formed in the two opposite sides of the filter cover, filter bottle handle adapting parts are arranged at the two ends of the filter bottle handle, and the filter bottle handle adapting parts are rotationally arranged in the filter bottle handle mounting grooves; a lug is arranged at the part, extending into the filter bottle handle mounting groove, of the filter bottle handle adapter part, a lug groove for inserting the lug is formed in the filter cover, the filter bottle handle has a storage position and an unfolding position, and when the filter bottle handle is located at the unfolding position, the lug is inserted into the lug groove. The composite filter element provided by the invention can solve the problem that the handle of the composite filter element is easy to fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a composite filter element and a water purifier. Background Art

[0002] As people pursue the quality of life, the quality of drinking water has begun to attract much attention. Water purifiers are becoming more and more popular because the purified water they produce is fresher, more hygienic and safer. A water purifier generally includes a composite filter element and a body. The composite filter element is installed in the body and docked with the waterway plate in the body, so that the composite filter element can perform the filtering function normally. There are high soluble solids in tap water. The reverse osmosis filter element in the composite filter element can block a large number of ions in the raw water in front of the reverse osmosis membrane under the action of the booster pump, so that the soluble solids of the water passing through the reverse osmosis membrane meet the standard of direct drinking water. The filtering capacity of the composite filter element will decrease with the increase of the use time, so it is generally necessary to replace it after a period of use. Based on this, a detachable connection is generally adopted between the composite filter element and the body. In the related art, the composite filter element is provided with a handle component, which can facilitate the handling, installation and disassembly of the composite filter element, but the handle component is easy to fall off during use, which is inconvenient to use, and the fall of the handle component is easy to cause the composite filter element to collide and be damaged, affecting the use. Summary of the invention

[0003] The main purpose of the invention is to provide a composite filter element, aiming to solve the problem that the handle of the composite filter element is easy to fall off.

[0004] To achieve the above-mentioned purpose, the composite filter element proposed in the present invention comprises a filter bottle, a filter cover, a central tube, a first filter component, a second filter component and a filter bottle handle; the filter bottle has a receiving chamber; the filter cover covers the filter bottle, and filter bottle handle mounting grooves are arranged on opposite sides of the filter cover; the central tube is arranged in the receiving chamber, and the central tube divides the receiving chamber into a first chamber and a second chamber, and the second chamber is located at the periphery of the first chamber; the first filter component is arranged in the first chamber; the second filter component is arranged in the second chamber; filter bottle handle adapters are arranged at both ends of the filter bottle handle, and the filter bottle handle adapters are rotatably arranged in the filter bottle handle mounting groove; wherein the portion of the filter bottle handle adapter extending into the filter bottle handle mounting groove is provided with a lug, and the filter cover is provided with a lug groove for inserting the lug, and the filter bottle handle has a storage position and an unfolded position, and when the filter bottle handle is in the unfolded position, the lug is inserted into the lug groove.

[0005] In one embodiment, the lug groove is a through groove that penetrates in the up-down direction, and the lug groove is connected to the filter bottle handle mounting groove.

[0006] In one embodiment, the lug is formed by protruding outward from the outer peripheral wall of the filter bottle handle adapter portion.

[0007] In one embodiment, in the axial direction of the filter bottle handle adapter, the projection of the lug falls into the inner wall surface of the filter bottle handle.

[0008] In one embodiment, the filter cover includes a filter bottle cover and a filter element cover, the filter bottle cover is connected to the filter bottle, the filter bottle cover is provided with an avoidance port, the filter element cover is arranged at the avoidance port and is detachably connected to the filter bottle cover, and the filter bottle handle mounting grooves are arranged on opposite sides of the filter bottle cover.

[0009] In one embodiment, the filter bottle cover is provided with a snap-fitting groove, and the filter element cover has a snap-fitting portion, and the snap-fitting portion is limitedly matched with the snap-fitting groove.

[0010] In one embodiment, the connection between the groove wall of the snap-fit ​​groove and the upper surface of the filter bottle cover is chamfered.

[0011] In one embodiment, the composite filter element further comprises a filter element handle, and the filter element handle is rotatably connected to the filter element cover.

[0012] In one embodiment, filter element handle mounting grooves are provided on opposite sides of the filter element cover, and filter element handle adapters are provided at both ends of the filter element handle, and the filter element handle adapters are rotatably provided in the filter element handle mounting grooves.

[0013] In one embodiment, the filter element handle installation groove extends along the length direction of the filter element cover to form a sliding space, and the filter element handle adapter portion can slide in the sliding space.

[0014] In one embodiment, limiting grooves are provided on opposite sides of the filter bottle cover, and limiting platforms are provided on opposite sides of the filter element handle. The limiting grooves and the limiting platforms cooperate in limiting positions in the upper and lower directions, and the filter element handle has a first position in which the limiting platform slides into the limiting groove, and a second position in which the limiting platform slides out of the limiting groove.

[0015] In one embodiment, the filter bottle cover has a plurality of first water flow channels, and the plurality of first water flow channels are connected to the accommodating cavity; the composite filter element also includes a plurality of adapters, and the plurality of adapters are plugged into the inlet ends of the plurality of first water flow channels.

[0016] In one embodiment, a joint limiting groove is provided on the filter bottle cover, a joint limiting portion is provided on the adapter, and the joint limiting portion is limitedly provided in the joint limiting groove.

[0017] In one embodiment, the composite filter element further comprises a decorative cover, and the decorative cover is snap-connected with the filter bottle cover.

[0018] In one embodiment, bayonet holes are provided on opposite sides of the filter bottle cover, and the decorative cover is provided with hooks that engage with the bayonet holes.

[0019] In one embodiment, a positioning groove is provided on the filter bottle cover, and a positioning column adapted to the positioning groove is provided on the decorative cover, and the positioning column extends into the positioning groove.

[0020] In one embodiment, the first filter component includes a pre-filter element, a post-filter element and a partition, the partition is arranged in the first chamber, and divides the first chamber into a first filter chamber and a second filter chamber, the pre-filter element is arranged in the first filter chamber, and the post-filter element is arranged in the second filter chamber; the second filter component includes a reverse osmosis filter element, the reverse osmosis filter element is sleeved on the outer wall surface of the central tube, and is located in the second chamber.

[0021] The present invention also provides a water purifier, which includes the composite filter element. The composite filter element comprises a filter bottle, a filter cover, a central tube, a first filter component, a second filter component and a filter bottle handle; the filter bottle has a accommodating chamber; the filter cover covers the filter bottle, and filter bottle handle mounting grooves are arranged on opposite sides of the filter cover; the central tube is arranged in the accommodating chamber, and the central tube divides the accommodating chamber into a first chamber and a second chamber, and the second chamber is located at the outer periphery of the first chamber; the first filter component is arranged in the first chamber; the second filter component is arranged in the second chamber; the filter bottle handle is provided with filter bottle handle adapter parts at both ends of the filter bottle handle, and the filter bottle handle adapter part is rotatably arranged in the filter bottle handle mounting groove; wherein, the part of the filter bottle handle adapter part extending into the filter bottle handle mounting groove is provided with a lug, and the filter cover is provided with a lug groove for inserting the lug, and the filter bottle handle has a storage position and an unfolded position, and when the filter bottle handle is in the unfolded position, the lug is inserted into the lug groove.

[0022] The technical solution of the present invention is to provide filter bottle handle mounting grooves on opposite sides of the filter cover, rotate the filter bottle handle adapters at both ends of the filter bottle handle to be arranged in the filter bottle handle mounting grooves, and the portion of the filter bottle handle adapter extending into the filter bottle handle mounting groove is provided with lugs, and the filter cover is provided with lug grooves for inserting the lugs, and the filter bottle handle has a storage position and an unfolded position, and when the filter bottle handle is in the unfolded position, the lugs are inserted into the lug grooves. Accordingly, when the user lifts the composite filter element by hand, the filter bottle handle is not easy to fall off, and it is convenient to use, and it is not easy to cause the composite filter element to be damaged by collision, which affects the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of a composite filter element of the present invention;

[0025] Figure 2 for Figure 1 Exploded view of the composite filter element;

[0026] Figure 3 It is a structural exploded view of the filter cover assembly of the present invention;

[0027] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 for Figure 3 A structural schematic diagram of the middle filter cover assembly from another perspective;

[0029] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0030] Figure 7 for Figure 3 A structural schematic diagram of the middle filter cover assembly from another perspective;

[0031] Figure 8 is a cross-sectional view of the composite filter element of the present invention;

[0032] Fig. 9 for Figure 8 Enlarged view of point C in the middle;

[0033] Fig.10 This is a water flow path diagram of the composite filter element of the present invention;

[0034] Fig.11 for Figure 8 A cross-sectional view of the composite filter element with its internal structure removed;

[0035] Fig.12 It is a schematic structural diagram of the first filter assembly of the present invention;

[0036] Fig.13 for Fig.12 The enlarged view of point D in the middle;

[0037] Fig.14 for Fig.12 An exploded view of the first filter assembly;

[0038] Fig.15 for Fig.14 Schematic diagram of the structure of the middle filter cover and the filter handle;

[0039] Fig.16 for Fig.12 A cross-sectional view of the first filter assembly;

[0040] Fig.17 is a schematic structural diagram of the second filter assembly of the present invention;

[0041] Fig.18 for Fig.17 An exploded view of the second filter assembly;

[0042] Fig.19 for Fig.17 A cross-sectional view of the second filter assembly.

[0043] Description of Figure Numbers:

[0044]

[0045]

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] The present invention provides an embodiment of a composite filter element, which is used to be installed in a water purifier to filter raw water (ie, tap water) passing through the composite filter element so that the water quality meets the needs of the user before being used by the user.

[0051] See also Figure 1 , Figure 2 , Fig.14 and Fig.18 The composite filter element 10 proposed in the present invention comprises a filter bottle 100, a first filter component 200, a second filter component 300, and a filter cover component 400; a receiving chamber 110 is formed inside the filter bottle 100, the first filter component 200 and the second filter component 300 are arranged in the receiving chamber 110, and the first filter component 200 is located inside the second filter component 300, or the second filter component 300 is located inside the first filter component 200, or the first filter component 200 is located on one side of the second filter component 300. It should be noted that the first filter component 200 and the second filter component 300 are respectively arranged in two independent chambers in the filter bottle 100, that is, a first chamber 111 and a second chamber 112 are formed in the receiving chamber 110, the first filter component 200 is arranged in the first chamber 111, and the second filter component 300 is arranged in the second chamber 112. The filter bottle 100 is arranged in a barrel shape, and its upper end is an opening, and the filter cover component 400 at least covers the opening. The filter cover assembly 400 is provided with at least one water inlet end and at least one water outlet end, and both the at least one water inlet end and the at least one water outlet end are communicated with the accommodating cavity 110 .

[0052] See also Figure 8 and Fig.10Specifically, the first filter component 200 and the second filter component 300 are both arranged in the accommodating chamber 110 of the filter bottle 100; the first filter component 200 may include a pre-filter element 221, and may also include a post-filter element 222, and may also include a pre-filter element 221 and a post-filter element 222 at the same time. The first filter component 200 will filter out impurities contained in the water and / or improve the taste of the water. The second filter component 300 may include a reverse osmosis filter element 310. The second filter component 300 will filter out various salt ions and other solutes in the water, thereby reducing the concentration of various salt ions and other solutes in the water and reducing the TDS value of the raw water.

[0053] See also Figures 1 to 8 The filter cover assembly 400 includes a filter bottle cover 410, a filter bottle handle 420 and a decorative cover 430. The filter bottle handle 420 is rotatably connected to the filter bottle cover 410, and the decorative cover 430 covers the filter bottle cover 410. The filter bottle cover 410 is provided with a first water inlet 411, a first water outlet 412, a second water inlet 413, a second water outlet 414 and a wastewater outlet 415. Correspondingly, the first water inlet 411 is the raw water inlet, that is, the water inlet connected to the water inlet side of the pre-filter element 221, for raw water to flow in; the first water outlet 412 is the water outlet connected to the water outlet side of the pre-filter element 221, for water filtered by the pre-filter element 221 to flow out; the second water inlet 413 is the water inlet connected to the water inlet side of the reverse osmosis filter element 310, and its water flow flows into the first chamber 111 from the second water inlet 413 after the pressurization of the pump is increased, and is filtered by the reverse osmosis filter element 310; the wastewater outlet 415 is the outlet of the wastewater filtered by the reverse osmosis filter element 310, and is mainly used to allow the wastewater after passing through the reverse osmosis filter element 310 to flow out.

[0054] It should be noted that the second water outlet 414 can be a water outlet connected to the water outlet side of the reverse osmosis filter element 310, or a water outlet connected to the water outlet side of the post filter element 222. When the first filter component 200 only includes the pre-filter element 221, the second water outlet 414 is used as the water outlet of the pure water after being filtered by the reverse osmosis filter element 310, and can be directly connected to the pure water outlet side of the reverse osmosis filter element 310 for pure water to flow out; when the first filter component 200 only includes the post filter element 222, or includes both the pre-filter element 221 and the post filter element 222, the second water outlet 414 is used as the water outlet of the pure water after being filtered by the post filter element 222, and the pure water after being filtered by the reverse osmosis filter element 310 should also flow into the post filter element 222 for re-filtration, and at this time, the second water outlet 414 is connected to the water outlet side of the post filter element 222.

[0055] See also Figures 5 to 7Further, filter bottle handle mounting grooves 417 are provided on opposite sides of the filter bottle cover 410, and the filter bottle handle 420 is generally U-shaped, with filter bottle handle adapters 420a provided at both ends thereof, and the filter bottle handle adapters 420a are provided in the filter bottle handle mounting grooves 417 and are rotatable relative to the filter bottle handle mounting grooves 417, so that the filter bottle handle 420 is rotatable relative to the filter bottle cover 410, so that the user can directly carry the composite filter element 10 by the filter bottle handle 420. The decorative cover 430 covers the filter bottle cover 410, mainly covering the outer wall surfaces of the multiple water flow channels of the filter bottle cover 410, so as to ensure the consistency of the appearance of the composite filter element 10.

[0056] See also Figures 12 to 16 The first filter assembly 200 includes a filter element cover 210, a filter element 220, a water outlet pipe 230, a welding sheet 240, an upper end cover 250, a lower end cover 260, a filter element handle 270 and a separator 280. It should be noted that the filter element cover 210 can be set to be an integrated structure with the filter bottle cover 410, so that the first filter assembly 200 does not include a separate filter element cover 210 structure. The filter element cover 210 is sealed and connected to the upper end cover 250, and the filter element 220 is arranged between the upper end cover 250 and the lower end cover 260. The filter element 220 can be a pre-filter element 221, or a post-filter element 222, and can also include a pre-filter element 221 and a post-filter element 222 at the same time. When the filter element 220 includes both a pre-filter element 221 and a post-filter element 222, the pre-filter element 221 and the post-filter element 222 can be arranged up and down, left and right, or inside and outside, and their specific positions are not limited. The pre-filter element 221 and the post-filter element 222 are separated by the partition 280, so that when the first filter assembly 200 is installed in the water purifier for use, the partition 280 and other structures in the composite filter element 10 are enclosed to form a mutually independent first filter cavity 710 and a second filter cavity 720, and the pre-filter element 221 and the post-filter element 222 are respectively arranged in the first filter cavity 710 and the second filter cavity 720, so that the water flow path through the pre-filter element 221 and the water flow path through the post-filter element 222 do not affect each other.

[0057] When the filter element 220 includes both the pre-filter element 221 and the post-filter element 222, since the pre-filter element 221 is used to filter out most of the impurities in the raw water, the overall volume of the pre-filter element 221 needs to be set larger, and the water passing through the post-filter element 222 has been filtered twice by the pre-filter element 221 and the reverse osmosis filter element 310, and the solute content in the water is already very small, so the overall volume of the post-filter element 222 can be set relatively small, therefore, the pre-filter element 221 and the post-filter element 222 are arranged in the up and down direction, which can ensure the filtering effect of the pre-filter element 221 and the post-filter element 222. Specifically, the pre-filter element 221 is located above the post-filter element 222, that is, the pre-filter element 221 is arranged close to the filter element cover 210, and the post-filter element 222 is arranged on the side of the pre-filter element 221 away from the filter element cover 210.

[0058] See also Figure 8 , Fig.14 and Fig.18 The pre-filter element 221 and the post-filter element 222 are both hollow cylindrical, wherein one end of the pre-filter element 221 is connected to the upper end cover 250, and the other end is connected to the upper surface of the partition 280. The pre-filter element 221 is connected to the upper end cover 250 and the partition 280 by gluing to prevent the water from flowing out directly through the connection between the pre-filter element 221, the upper end cover 250 and the partition 280 without filtering through the pre-filter element 221. Of course, the pre-filter element 221, the upper end cover 250 and the partition 280 can also be connected in other ways, and there is no specific limitation on this. The partition 280 can be cylindrical, and the post-filter element 222 is arranged in the cylindrical partition 280, and the pre-filter element 221 and the post-filter element 222 are separated by the partition 280. The bottom of the cylindrical partition 280 is an opening, and the opening is used for the post-filter element 222 to be placed in the partition 280, and the opening is sealed by the lower end cover 260. The post-filter element 222 disposed inside the cylindrical partition 280 is respectively glued to the top inside the partition 280 and the lower end cover 260 to prevent the water from flowing out directly through the connection between the post-filter element 222 and the top inside the partition 280 and the lower end cover 260 without being filtered by the post-filter element 222. Of course, the post-filter element 222 and the top inside the partition 280 and the lower end cover 260 can also be connected in other ways, and there is no specific limitation on this.

[0059] See also Figure 8 , the length of the pre-filter element 221 is greater than the length of the post-filter element 222 to ensure the filtering effect of the pre-filter element 221 and the post-filter element 222. Furthermore, the length of the pre-filter element 221 is 2-3 times the length of the post-filter element 222.

[0060] It should be noted that in order to ensure the compactness and miniaturization of the structure of the first filter component 200, since the pre-filter element 221 is arranged in a hollow cylindrical shape and the post-filter element 222 is arranged below the pre-filter element 221, an outlet pipe 230 can be arranged inside the pre-filter element 221. One end of the outlet pipe 230 is connected to the water outlet side of the post-filter element 222, and the other end is connected to the outlet channel on the filter element cover 210, so that the water inlet channel and the outlet channel of the first filter component 200 can be integrated on the filter element cover 210, thereby ensuring the compactness of the structure of the first filter component 200 and realizing the miniaturization of the first filter component 200 and the composite filter element 10 installed with the first filter component 200. In order to ensure the independence of the water outlet flow path of the post-filter element 222 and the water outlet flow path of the pre-filter element 221, the sealing of the two ends of the water outlet pipe 230 can also be ensured by setting a corresponding sealing structure, for example, through two welding plates 240, which are respectively connected to the filter element cover 210 and the partition 280 to form a sealing groove of the seal, and a seal is installed in the sealing groove to limit the position of the seal. At the same time, the two ends of the water outlet pipe 230 are sealed by the sealing effect of the seal.

[0061] See also Figures 5 to 15 Furthermore, the entire first filter component 200 is integrated, the filter element cover 210 is located at the top of the entire first filter component 200, and the filter element cover 210 is connected to the upper end cover 250. The matching method between the filter element cover 210 and the upper end cover 250 can be a sealed connection, a glue connection, or other connection methods. The first filter assembly 200 also includes a filter element handle 270. Filter element handle mounting grooves 214 are provided on opposite sides of the filter element cover 210. The filter element handle 270 is roughly U-shaped, and filter element handle adapter portions 270a are provided at both ends. The filter element handle adapter portions 270a are arranged in the filter element handle mounting groove 214 and are rotatable relative to the filter element handle mounting groove 214, so that the filter element handle 270 is rotatable relative to the filter element cover 210. Considering that the filter element 220, that is, the pre-filter element 221 and / or the post-filter element 222, has a shorter service life than the reverse osmosis filter element 310, when the service life of the filter element 220 expires, the entire first filter assembly 200 can be disassembled from the composite filter element 10 by lifting the filter element handle 270, which is convenient for users to use.

[0062] See also Figure 5Furthermore, the filter bottle cover 410 may be provided with an escape port 416, and the filter element cover 210 is provided at the escape port 416 for installation of the first filter assembly 200. The filter element cover 210 is provided corresponding to the first chamber 111, and the filter element cover 210 may be provided at the escape port 416 as an independent component, and be detachably connected with the filter bottle cover 410. When replacing the first filter assembly 200, it is only necessary to remove the filter element cover 210, and then replace the first filter assembly 200; or, the filter element cover 210 is a part of the first filter assembly 200, and the filter element cover 210 is connected with the filter element 220. By removing the filter element cover 210, the entire filter element 220 can be directly taken out to achieve replacement of the first filter assembly 200. It should be emphasized that the connection method between the filter element cover 210 and the filter element 220 can be a direct connection method or an indirect connection method, for example, the filter element cover 210 and the filter element 220 are connected through the upper end cover 250, and there is no specific limitation on this.

[0063] See also Figures 8 to 10 , Figures 17 to 19 The second filter assembly 300 includes a reverse osmosis filter element 310, a central tube 340, a reverse osmosis top cover 320 and a reverse osmosis bottom cover 330. The reverse osmosis filter element 310 is sleeved on the outer wall of the central tube 340, and the reverse osmosis filter element 310 is arranged between the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330. The upper end and the lower end of the reverse osmosis filter element 310 are fixed by the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330. Furthermore, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are also provided with a reverse osmosis filter element 310 groove for embedding the end of the reverse osmosis filter element 310; thus, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 jointly fix the reverse osmosis filter element 310 in the filter bottle 100.

[0064] See also Figures 8 to 10 The second filter assembly 300 is arranged in the accommodating chamber 110, and the accommodating chamber 110 is divided into a first chamber 111 and a second chamber 112 by the central tube 340. The second chamber 112 is located at the periphery of the first chamber 111. Specifically, the central tube 340 is arranged in a hollow cylindrical shape, and the interior of the central tube 340 forms the first chamber 111, and the exterior of the hollow tube forms the second chamber 112. The first filter assembly 200 is arranged in the first chamber 111, and a first water gap 610 is formed between the pre-filter element 221 and the inner wall surface of the central tube 340, and the first water gap 610 is communicated with the first water inlet 411. The second filter assembly 300 is arranged in the second chamber 112, and a second water gap 620 is formed between the reverse osmosis filter element 310 and the inner wall surface of the filter bottle 100, and the second water gap 620 is communicated with the second water inlet 413.

[0065] When the filter element 220 of the first filter component 200 includes a pre-filter element 221 and a post-filter element 222, the partition 280 separates the first chamber 111 into a first filter chamber 710 and a second filter chamber 720 that are independent of each other. The pre-filter element 221 is placed in the first filter chamber 710, and the post-filter element 222 is placed in the second filter chamber 720 to ensure that the water flow path through the pre-filter element 221 and the water flow path through the post-filter element 222 do not interfere with each other. Furthermore, a first water passage hole 340a can be opened at a position of the central tube 340 corresponding to the second filter chamber 720, so that the pure water filtered by the reverse osmosis filter element 310 can directly flow into the second filter chamber 720 through the second water passage hole 280a, and be filtered again through the post filter element 222, without having to set a separate pipeline between the pure water outlet side of the reverse osmosis filter element 310 and the water inlet side of the post filter element 222, thereby realizing the compactness of the structure of the composite filter element 10, connecting the first chamber 111 and the second filter chamber 720 through the first water passage hole 340a, and further shortening the flow path between the pure water outlet side of the reverse osmosis filter element 310 and the water inlet side of the post filter element 222, thereby improving the water outlet efficiency of the composite filter element 10.

[0066] See also Fig.14 Further, the partition 280 is barrel-shaped, the post-filter element 222 is disposed in the partition 280, and the peripheral wall of the partition 280 and the inner wall of the first central tube 340 form the third water-passing gap 630; the peripheral wall of the partition 280 is provided with a second water-passing hole 280a, and the first chamber 111 is connected to the second filter cavity 720 through the first water-passing hole 340a and the second water-passing hole 280a. By setting the partition 280 in a barrel shape, it can be ensured that the post-filter element 222 disposed in the barrel-shaped partition 280 is not easily torn when floating up and down under the action of water pressure, thereby affecting the service life of the post-filter element 222.

[0067] The composite filter element 10 proposed by the present invention has a flow path as follows:

[0068] See also Fig.10The raw water flows into the first water gap 610 through the first water inlet 411, and after being filtered by the pre-filter element 221, flows out from the water outlet channel 221a between the inner wall of the pre-filter element 221 and the outer wall of the outlet pipe 230, and flows out from the first water outlet 412. After being pressurized by the booster pump, the water flowing out from the first water outlet 412 flows into the second water gap 620 through the second water inlet 413, and enters from the side of the reverse osmosis filter element 310 (here, it means that the reverse osmosis filter element 310 adopts a 3D water-saving membrane. If the reverse osmosis filter element 310 adopts a common filter membrane, the water enters from the bottom of the reverse osmosis filter element 310). After being filtered by the reverse osmosis filter element 310, the water flow is divided into two paths: a pure water path and a waste water path. The pure water flows to the post-filter element 222 for re-filtration, and the waste water flows out of the composite filter element 10 through the waste water outlet 415. Among them, the pure water first flows through the first water hole 340a on the central tube 340 to the third water gap 630, and then flows through the second water hole 280a on the partition 280 to the rear filter element 222 for filtration. The pure water filtered by the rear filter element 222 flows from the inside of the rear filter element 222 to the water outlet pipe 230, and finally flows out from the second water outlet 414 for user use.

[0069] It should be emphasized that if the filter element 220 does not include the post-filter element 222, the pure water filtered by the reverse osmosis filter element 310 directly flows out from the second water outlet 414 for use by the user.

[0070] See also Figures 1 to 7 In one embodiment of the present invention, the composite filter element 10 comprises a filter bottle 100, a filter cover 400a, a central tube 340, a first filter assembly 200, a second filter assembly 300 and a filter bottle handle 420; the filter bottle 100 has a receiving chamber 110; the filter cover 400a covers the filter bottle 100, and filter bottle handle mounting grooves 417 are arranged on opposite sides of the filter cover 400a; the central tube 340 is arranged in the receiving chamber 110, and the central tube 340 divides the receiving chamber 110 into a first chamber 111 and a second chamber 112, and the second chamber 112 is located on the periphery of the first chamber 111; the first filter assembly 200 is arranged on the ... the filter bottle handle mounting grooves 417 are arranged on opposite sides of the filter cover 400a; the central tube 340 is arranged in the receiving chamber 110, and the central tube 340 divides the receiving chamber 110 into a first chamber 111 and a second chamber 112, and the second chamber 112 is located on the periphery of the first chamber 111; the first filter assembly 200 is arranged on the receiving chamber 110; the filter cover 400a covers the filter bottle The first chamber 111; the second filter assembly 300 is arranged in the second chamber 112; filter bottle handle adapter parts 420a are arranged at both ends of the filter bottle handle 420, and the filter bottle handle adapter parts 420a are rotatably arranged in the filter bottle handle mounting groove 417; wherein, the part of the filter bottle handle adapter part 420a extending into the filter bottle handle mounting groove 417 is provided with a lug 420b, and the filter cover 400a is provided with a lug groove 410b for the lug 420b to be inserted, and the filter bottle handle 420 has a storage position and an unfolded position, and when the filter bottle handle 420 is in the unfolded position, the lug 420b is inserted into the lug groove 410b.

[0071] Specifically, the central tube 340 is disposed in the filter bottle 100, and divides the accommodating chamber 110 into a first chamber 111 and a second chamber 112, wherein the first chamber 111 and the second chamber 112 are used to install the first filter assembly 200 and the second filter assembly 300, respectively. The filter bottle 100 is disposed in a barrel shape, and the filter cover 400a covers one end of the filter bottle 100. In order to facilitate the user to take out the filter bottle 100 from the water purifier, a filter bottle handle 420 is disposed on the filter cover 400a, and the filter bottle handle 420 is rotatably connected to the filter cover 400a. Both ends of the filter bottle handle 420 are provided with filter bottle handle adapter parts 420a, and the filter cover 400a is provided with a filter bottle handle mounting groove 417 for the filter bottle handle adapter part 420a to extend into, and the filter bottle handle adapter part 420a is rotatably connected in the filter bottle handle mounting groove 417; the setting of the filter bottle handle 420 will make it convenient for the user to lift the filter bottle 100 from the water purifier, thereby making it convenient for the user to replace the composite filter element 10.

[0072] See also Figure 5 and Figure 6 , it is taken into consideration that, due to the heavy weight of the composite filter element 10, when the user carries the composite filter element 10, there is a risk that the filter bottle handle adapter 420a will be separated from the filter bottle handle mounting groove 417, which will cause the user to be unstable. After the filter bottle handle 420 and the filter cover 400a are separated, the filter bottle 100 will fall and hit the ground, causing damage. Therefore, in order to improve the stability of the connection between the filter bottle handle 420 and the filter cover 400a when the user carries the composite filter element 10 and improve the user experience, the filter bottle handle adapter 420a is extended into the The portion of the filter bottle handle mounting groove 417 is provided with a lug 420b, and the filter cover 400a is provided with a lug groove 410b for the lug 420b to be inserted into. When the filter bottle handle 420 is rotated to lift the filter bottle 100, the lug 420b will be inserted into the lug groove 410b. Therefore, the cooperation between the lug 420b and the lug groove 410b reduces the possibility of the filter bottle 100 shaking when being lifted, making the lifting process of the filter bottle 100 more stable, facilitating the user to exert force, and thus improving the user experience.

[0073] It should be noted that the filter bottle handle 420 has a storage position and an extended position. The storage position is a position where the filter bottle handle 420 is stored in the filter cover 400a and does not need to be rotated, and is substantially parallel to the upper surface of the filter cover 400a. The extended position is a position where the filter bottle handle 420 rotates relative to the filter cover 400a and is provided for the user to lift the filter bottle 100 by hand, and the filter bottle handle 420 is substantially perpendicular to the upper surface of the filter cover 400a.

[0074] See also Figure 5 and Figure 6In one embodiment, the lug groove 410b is a through groove that penetrates in the vertical direction, and the lug groove 410b is connected to the filter bottle handle installation groove 417. Further, the lug 420b is formed by protruding outward from the outer peripheral wall of the filter bottle handle adapter 420a.

[0075] Specifically, the lug groove 410b is connected to the filter bottle handle mounting groove 417, and when the filter bottle handle 420 is not subject to the gravity of the filter bottle 100, the lug 420b can rotate unhindered in the filter bottle handle mounting groove 417 and the lug groove 410b within the rotatable range of the filter bottle handle 420; when the filter bottle handle 420 is subject to the gravity of the filter bottle 100, the lug 420b rotates until its length direction is parallel to the axial direction of the composite filter element 10 and then is inserted into the lug groove 410b, thereby limiting the shaking of the filter bottle 100. The lug 420b is formed by protruding outward from the outer peripheral wall of the filter bottle handle adapter 420a, and is integrally formed with the filter bottle handle 420, which is convenient for processing and manufacturing. It should be emphasized that the lug 420b is formed by protruding outward from part of the outer peripheral wall of the filter bottle handle adapter 420a, rather than the entire outer peripheral wall.

[0076] It is worth mentioning that in the axial direction of the filter bottle handle adapter 420a, the projection of the lug 420b falls into the inner wall surface of the filter bottle handle 420. In this design, since the lug groove 410b is a through groove that penetrates in the vertical direction and its opening is arranged upward, the direction of the lug 420b can be aligned with the extension direction of the filter bottle handle 420. When the user carries the filter bottle handle 420, the lug 420b just extends into the lug groove 410b.

[0077] See also Figures 5 to 8 In one embodiment, the filter cover 400a includes a filter bottle cover 410 and a filter element cover 210, the filter bottle cover 410 is connected to the filter bottle 100, the filter bottle cover 410 is provided with an avoidance port 416, the filter element cover 210 is disposed at the avoidance port 416 and is detachably connected to the filter bottle cover 410, and the filter bottle handle mounting grooves 417 are disposed on opposite sides of the filter bottle cover 410.

[0078] Specifically, the filter cover 400a includes a filter bottle cover 410 and a filter element cover 210. The filter element cover 210 is detachably connected to the filter bottle cover 410. The filter bottle cover 410 covers the filter bottle 100. The filter element cover 210 is arranged corresponding to the first filter assembly 200, and the filter bottle cover 410 is arranged corresponding to the second filter assembly 300. The filter bottle cover 410 is provided with an escape port 416, and the filter element cover 210 is detachably arranged at the escape port 416 for installation of the first filter assembly 200. The filter element cover 210 is arranged corresponding to the first chamber 111. The filter element cover 210 can be used as an independent component, arranged at the avoidance port 416, and detachably connected to the filter bottle cover 410. When replacing the first filter component 200, it is only necessary to remove the filter element cover 210 and then replace the first filter component 200; or, the filter element cover 210 is used as a part of the first filter component 200, and the filter element cover 210 is connected with the filter element 220. By removing the filter element cover 210, the entire filter element 220 can be directly taken out to achieve the replacement of the first filter component 200. It should be emphasized that the connection between the filter element cover 210 and the filter element 220 can be a direct connection or an indirect connection, such as connecting the filter element cover 210 and the filter element 220 through the upper end cover 250, and there is no specific limitation on this. The filter bottle handle mounting grooves 417 are arranged on opposite sides of the filter bottle cover 410 , and the entire filter bottle 100 can be lifted by the filter bottle handles 420 .

[0079] See also Figure 5 In one embodiment, the filter bottle cover 410 is provided with a snap-in groove 418, and the filter element cover 210 has a snap-in portion 215, and the snap-in portion 215 is limitedly matched with the snap-in groove 418. Specifically, a snap-in groove 418 is provided on the filter bottle cover 410, and a snap-in portion 215 is provided on the filter element cover 210, and the snap-in portion 215 and the snap-in groove 418 are limitedly matched. Connecting the filter bottle cover 410 and the filter element cover 210 by snapping is convenient and simple, and easy to operate. At the same time, through the limited matching of the snap-in portion 215 and the snap-in groove 418, the position of the filter element cover 210 can also be fixed, so that the flow channel opening of the filter bottle cover 410 and the flow channel opening of the filter element cover 210 can be accurately docked, and a sealed conduction is achieved, which does not affect the water outlet effect of the composite filter element 10.

[0080] See also Figure 8 and Fig. 9Furthermore, a sealing ring 500 can be provided at the joint between the flow opening of the filter bottle cover 410 and the flow opening of the filter element cover 210 to ensure the sealing of the flow path. When the filter element cover 210 is installed at the avoidance opening 416 of the filter bottle cover 410, the sealing ring 500 can be elastically deformed to seal the joint between the flow opening of the filter bottle cover 410 and the flow opening of the filter element cover 210, and at the same time, it can also ensure that the filter element cover 210 will not easily shake in the up and down directions relative to the filter bottle cover 410. The material of the sealing ring 500 can be set to rubber or silicone material, of course, it can also be set to other materials, and there is no specific limitation on this.

[0081] See also Fig. 9 Furthermore, the connection between the groove wall of the clamping groove 418 and the upper surface of the filter bottle cover 410 is chamfered. This arrangement can play a guiding role when the clamping portion 215 of the filter element cover 210 is clamped into the clamping groove 418 of the filter bottle cover 410. At the same time, the chamfered setting can also play a guiding role when the sealing ring 500 is clamped between the filter bottle cover 410 and the filter element cover 210.

[0082] Please continue reading Fig. 9 In one embodiment, the filter cover 210 is provided with a first water inlet 211 and a first water outlet 212, the pre-filter 221 is provided in a hollow cylindrical shape, the first water inlet 211 is communicated with the water inlet side of the pre-filter 221, and the first water outlet 212 is communicated with the water outlet side of the pre-filter 221. Specifically, raw water can flow into the second chamber 112 from the first water inlet 211, and flow out from the first water outlet 212 after being filtered by the pre-filter 221.

[0083] See also Figures 1 to 4 In one embodiment, the filter bottle cover 410 is further provided with a first water inlet 411, a first water outlet 412, a second water inlet 413, a second water outlet 414 and a wastewater outlet 415, and the filter element cover 210 is also provided with a second water outlet 213, the first water inlet 211 and the first water inlet 411 are sealed and connected, the first water outlet 212 and the first water outlet 412 are sealed and connected, the second water outlet 213 and the second water outlet 414 are sealed and connected, the second water inlet 413 is connected to the water inlet side of the reverse osmosis filter element 310, the second water outlet 414 is connected to the water outlet side of the reverse osmosis filter element 310, and the wastewater outlet 415 is connected to the water outlet side of the reverse osmosis filter element 310.

[0084] Specifically, to facilitate the installation of the filter element assembly and the pipeline, the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the wastewater outlet 415 for connecting with the pipeline are integrated on the filter bottle cover 410. To facilitate the connection of the pipeline, the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the wastewater outlet 415 can be provided with a corresponding adapter 440 for pipeline connection. Since the pre-filter element 221 assembly is detachable relative to the filter bottle 100, a corresponding interface needs to be provided on the filter element cover 210 to form a complete flow path. Specifically, the first water inlet 211 and the first water inlet 411 are sealed and connected, the first water outlet 212 and the first water outlet 412 are sealed and connected, the second water outlet 213 and the second water outlet 414 are sealed and connected, and the second water inlet 413 is connected to the water inlet side of the reverse osmosis filter element 310, the second water outlet 414 is connected to the water outlet side of the reverse osmosis filter element 310, and the wastewater outlet 415 is connected to the water outlet side of the reverse osmosis filter element 310.

[0085] The flow path of the water flow in the filter element assembly is: it flows in from the first water inlet 411, flows through the first water inlet port 211 to the pre-filter element 221 for filtration, then flows to the first water outlet port 212, and then flows out from the first water outlet 412. The water flowing out from the first water outlet 412 flows in from the second water inlet 413 under the pressure of the booster pump, and is filtered by the reverse osmosis filter element 310 and is divided into two paths, one of which flows out from the wastewater outlet 415, and the other flows from the second water outlet port 213 to the second water outlet 414. The waterway scheme of the present invention is reasonably designed, and the space utilization rate of the internal waterway layout of the filter bottle 100 is high, and it will not take up much space, so that when the overall size of the filter element assembly remains unchanged, the size of the internal pre-filter element 221 and the reverse osmosis filter element 310 can be made larger, thereby improving the flux of the waterway of the filter element assembly.

[0086] See also Figure 5 and Fig.15 In one embodiment, the composite filter element 10 further includes a filter element handle 270, and the filter element handle 270 is rotatably connected to the filter element cover 210. Further, filter element handle mounting grooves 214 are provided on opposite sides of the filter element cover 210, and filter element handle adapters 270a are provided at both ends of the filter element handle 270, and the filter element handle adapters 270a are rotatably provided in the filter element handle mounting grooves 214.

[0087] Specifically, the filter element handle 270 is roughly U-shaped, and filter element handle adapter portions 270a are provided at both ends thereof. The filter element handle adapter portion 270a is provided in the filter element handle mounting groove 214 and is rotatable relative to the filter element handle mounting groove 214, so that the filter element handle 270 is rotatable relative to the filter element cover 210. Considering that the filter element 220, that is, the pre-filter element 221 and / or the post-filter element 222 has a shorter service life than the reverse osmosis filter element 310, when the service life of the filter element 220 expires, the entire first filter assembly 200 can be disassembled from the composite filter element 10 by lifting the filter element handle 270, which is convenient for users to use.

[0088] See also Fig.15 In one embodiment, the filter element handle installation groove 214 extends along the length direction of the filter element cover 210 to form a sliding space, and the filter element handle adapter 270a can slide in the sliding space. Further, the filter bottle cover 410 is provided with limiting grooves 419 on opposite sides, and the filter element handle 270 is provided with limiting platforms 270b on opposite sides. The limiting grooves 419 and the limiting platforms 270b are matched in the upper and lower directions. The filter element handle 270 has a first position in which the limiting platform 270b slides into the limiting groove 419, and a second position in which the limiting platform 270b slides out of the limiting groove 419.

[0089] Specifically, the filter element handle adapter 270a can slide in the filter element handle installation groove 214. When the user needs to remove and replace the pre-filter element 221, the filter element handle 270 needs to be slid from the first position to the second position, and then the filter element handle 270 can be rotated before it can be lifted out. When it slides to the first position, the limit groove 419 and the limit platform 270b are limited in the up and down directions, so that the filter element handle 270 cannot be directly rotated in the up and down directions.

[0090] See also Figure 5 and Fig.15 In one embodiment, the filter element handle 270 is arranged in a U shape, and the inner wall surface of the filter element handle 270 abuts against at least a portion of the outer wall surface of the filter element cover 210. The inner wall surface of the filter element handle 270 abuts against a portion of the outer wall surface of the filter element cover 210, with a compact layout, a reasonable structure, and reasonable use of space, so that the composite filter element 10 can be miniaturized.

[0091] See also Fig.16, further, the upper surface of the filter element handle 270 is flush with the upper surface of the filter element cover 210. Specifically, the upper surface of the filter element handle 270 is flush with the upper surface of the filter element cover 210, ensuring the consistency of the upper surface of the first filter assembly 200. It should be noted that the upper surface of the filter element handle 270 is flush with the upper surface of the filter element cover 210, which refers to the state when the filter element handle 270 is in the first position.

[0092] In one embodiment, a notch is provided at one end of the filter element cover 210 away from the clamping portion 215. The notch design facilitates the user to slide the filter element handle 270 from the first position to the second position and rotate it to lift the entire first filter assembly 200.

[0093] See also Figures 3 to 9 In one embodiment, the filter bottle cover 410 has a plurality of first water passages 410a, and the plurality of first water passages 410a are connected to the accommodating chamber 110; the composite filter element 10 also includes a plurality of adapters 440, and the plurality of adapters 440 are plugged into the inlet ends of the plurality of first water passages 410a.

[0094] See also Figure 4 and Fig. 9 , the filter bottle cover 410 is specifically provided with a first water flow channel 410a, which corresponds to the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the wastewater outlet 415 on the filter bottle cover 410, respectively. Of course, in other embodiments, the number of the first water flow channels 410a can also be increased or decreased according to the specific situation, and there is no specific limitation on this. Since the filter element cover 210 is provided corresponding to the first chamber 111, at least two second water flow channels 210a are provided on the filter element cover 210, which correspond to the first water inlet 411 and the first water outlet 412, respectively. In this embodiment, the filter element cover 210 is provided with a second water flow channel 210a, which corresponds to the first water inlet 411, the first water outlet 412 and the second water outlet 414, respectively.

[0095] The outlet ends of three of the five first water passages 410a correspond to and are sealed with the inlet ends of the corresponding three second water passages 210a, so as to avoid the phenomenon of water flowing at the joint between the first water passage 410a and the second water passage 210a. Considering that the second water passage 210a is formed on the filter element cover 210, when the filter bottle cover 410 and the filter element cover 210 are assembled, the pre-filter element 221 and / or the post-filter element 222 will shake up and down due to the force of water pressure in the first chamber 111, thus driving the filter element cover 210 to shake up and down, so that the joint between the outlet end of the first water passage 410a on the filter bottle cover 410 and the water inlet end of the second water passage 210a will be misaligned in the vertical direction, and the two joints cannot be completely connected, thereby affecting the water outlet effect of the composite filter element 10. Therefore, optionally, the area of ​​the outlet end of the first water flow channel 410a is set to be smaller than the area of ​​the inlet end of the second water flow channel 210a. With this setting, although the filter element cover 210 may swing up and down relative to the filter bottle cover 410, since the area of ​​the inlet end of the second water flow channel 210a is larger than the area of ​​the outlet end of the first flow channel, when the filter element cover 210 swings in the up and down directions, it will not affect the water flow rate of the first water flow channel 410a and the second water flow channel 210a, thereby ensuring the water outlet effect of the composite filter element 10.

[0096] See also Figures 2 to 5 , Fig. 9 It should be noted that the filter bottle cover 410 is also provided with an adapter 440, one end of which is inserted into the first water flow channel 410a, and the other end is used to connect the pipeline. The outlet end of the first water flow channel 410a refers to the end of the first water flow channel 410a away from the adapter 440, and does not specifically refer to the outlet end to which the water flows in the first water flow channel 410a. Similarly, the inlet end of the second water flow channel 210a refers to the end close to the outlet end of the first water flow channel 410a, and does not specifically refer to the inlet end of the water flow in the second water flow channel 210a. The provision of the adapter 440 can facilitate the connection of the water pipe in the water purifier.

[0097] See also Figures 3 to 5 Further, the filter bottle cover 410 is provided with a joint limiting groove 410c, and the adapter 440 is provided with a joint limiting portion 440a, and the joint limiting portion 440a is limitedly arranged in the joint limiting groove 410c. Specifically, through the limiting cooperation between the joint limiting groove 410c and the joint limiting portion 440a, the adapter 440 inserted into the inlet end of the first water flow channel 410a can be prevented from rotating, thereby avoiding an unstable connection between the two.

[0098] See also Figures 3 to 7In one embodiment, the composite filter element 10 further includes a decorative cover 430, and the decorative cover 430 is snap-connected with the filter bottle cover 410. Specifically, the decorative cover 430 is snap-connected with the filter bottle cover 410, which is simple and easy to operate. Of course, in other embodiments, the decorative cover 430 and the filter bottle cover 410 may also be connected in other ways, which is not specifically limited.

[0099] See also Figures 5 to 7 Further, the filter bottle cover 410 is provided with bayonet holes 410d on opposite sides, and the decorative cover 430 is provided with a hook 430a that engages with the bayonet holes 410d. Specifically, bayonet holes 410d can be provided on opposite sides of the filter bottle cover 410, and a hook 430a can be provided on the decorative cover 430 to achieve a snap connection between the two.

[0100] Please continue reading Figures 5 to 7 Furthermore, the filter bottle cover 410 is provided with a positioning groove 410e, and the decorative cover 430 is provided with a positioning column 430b adapted to the positioning groove 410e, and the positioning column 430b extends into the positioning groove 410e. Specifically, only the two sides of the decorative cover 430 are clamped with the two sides of the filter bottle cover 410. Since the surface area of ​​the decorative cover 430 is large, the middle part of the decorative cover 430 may easily shake or become loose, etc. Therefore, the decorative cover 430 is also provided with a positioning column 430b, and the filter bottle cover 410 is provided with a positioning groove 410e, and the two cooperate with each other to fix the position of the decorative cover 430. At the same time, the design of the positioning groove 410e and the positioning column 430b can also play a positioning role in the installation of the decorative cover 430.

[0101] See also Figure 8 In one embodiment, the first filter component 200 includes a pre-filter element 221, a post-filter element 222 and a partition 280, the partition 280 is arranged in the first chamber 111, and divides the first chamber 111 into a first filter cavity 710 and a second filter cavity 720, the pre-filter element 221 is arranged in the first filter cavity 710, and the post-filter element 222 is arranged in the second filter cavity 720; the second filter component 300 includes a reverse osmosis filter element 310, and the reverse osmosis filter element 310 is sleeved on the outer wall of the central tube 340 and is located in the second chamber 112.

[0102] Specifically, the partition 280 divides the first chamber 111 into a first filter chamber 710 and a second filter chamber 720, and the pre-filter element 221 is arranged in the first filter chamber 710, and the post-filter element 222 is arranged in the second filter chamber 720. The two filter chambers are separated by the partition 280 to ensure that the water path flowing through the pre-filter element 221 and the water path flowing through the post-filter element 222 do not interfere with each other. The first filter chamber 710 and the second filter chamber 720 can be arranged left and right, or up and down, as long as they meet the setting of the flow path. Specifically in this embodiment, considering the flux of the water flow in the composite filter element 10, the water inlet path of the pre-filter element 221, and the filtering effect of the pre-filter element 221, it is selected to set the pre-filter element 221 above the post-filter element 222, and the volume of the pre-filter element 221 is larger than the volume of the post-filter element 222, so as to ensure the filtering effect of the first filter assembly 200. The flow path of the composite filter element 10 is as described above and will not be repeated here.

[0103] The technical solution of the present invention is that filter bottle handle mounting grooves 417 are provided on opposite sides of the filter cover 400a, the filter bottle handle adapters 420a at both ends of the filter bottle handle 420 are rotated and arranged in the filter bottle handle mounting grooves 417, and the portion of the filter bottle handle adapter 420a extending into the filter bottle handle mounting grooves 417 is provided with lugs 420b, and the filter cover 400a is provided with lug grooves 410b for inserting the lugs 420b, and the filter bottle handle 420 has a storage position and an unfolded position, and when the filter bottle handle 420 is in the unfolded position, the lugs 420b are inserted into the lug grooves 410b. Accordingly, when the user lifts the composite filter element 10 by hand, the filter bottle handle 420 is not easy to fall off, and it is convenient to use, and it is not easy to cause the composite filter element 10 to be damaged by collision, which affects the use.

[0104] The present invention also provides a water purifier, which includes the composite filter element. The specific structure of the composite filter element refers to the above embodiment. Since the water purifier adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0105] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A composite filter element, characterized in that: The composite filter element comprises: A filter bottle having a receiving cavity; A filter cover, covering the filter bottle, and filter bottle handle mounting grooves are arranged on opposite sides of the filter cover; a central tube, disposed in the accommodating chamber, wherein the central tube divides the accommodating chamber into a first chamber and a second chamber, wherein the second chamber is located at the periphery of the first chamber; A first filter assembly, disposed in the first chamber; A second filter assembly is disposed in the second chamber; and A filter bottle handle, wherein both ends of the filter bottle handle are provided with filter bottle handle adapter parts, and the filter bottle handle adapter parts are rotatably arranged in the filter bottle handle mounting groove; wherein, the portion of the filter bottle handle adapter part extending into the filter bottle handle mounting groove is provided with a lug, and the filter cover is provided with a lug groove for inserting the lug, and the filter bottle handle has a storage position and an unfolded position, and when the filter bottle handle is in the unfolded position, the lug is inserted into the lug groove.

2. The composite filter element according to claim 1, characterized in that: The lug groove is a through groove that penetrates in the up-down direction, and the lug groove is connected to the filter bottle handle mounting groove.

3. The composite filter element according to claim 2, characterized in that: The lug is formed by protruding outward from the outer peripheral wall of the filter bottle handle adapter.

4. The composite filter element according to claim 3, characterized in that: In the axial direction of the filter bottle handle adapter, the projection of the lug falls on the inner wall surface of the filter bottle handle.

5. The composite filter element according to claim 2, characterized in that: The filter cover includes a filter bottle cover and a filter element cover, the filter bottle cover is connected to the filter bottle, the filter bottle cover is provided with an avoidance port, the filter element cover is arranged at the avoidance port and is detachably connected to the filter bottle cover, and the filter bottle handle mounting grooves are arranged on opposite sides of the filter bottle cover.

6. The composite filter element according to claim 5, characterized in that: The filter bottle cover is provided with a clamping groove, and the filter element cover has a clamping portion, and the clamping portion is limitedly matched with the clamping groove.

7. The composite filter element according to claim 6, characterized in that: The connection between the groove wall of the clamping groove and the upper surface of the filter bottle cover is chamfered.

8. The composite filter element according to claim 7, characterized in that: The composite filter element further comprises a filter element handle, and the filter element handle is rotatably connected to the filter element cover.

9. The composite filter element according to claim 8, characterized in that: Filter element handle installation grooves are arranged on opposite sides of the filter element cover, and filter element handle adapters are arranged at both ends of the filter element handle. The filter element handle adapters are rotatably arranged in the filter element handle installation grooves.

10. The composite filter element according to claim 9, characterized in that: The filter element handle installation groove extends along the length direction of the filter element cover to form a sliding space, and the filter element handle adapter can slide in the sliding space.

11. The composite filter element according to claim 10, characterized in that: Limiting grooves are arranged on opposite sides of the filter bottle cover, and limiting platforms are arranged on opposite sides of the filter element handle. The limiting grooves and the limiting platforms cooperate in limiting positions in the up and down directions. The filter element handle has a first position in which the limiting platform slides into the limiting groove, and a second position in which the limiting platform slides out of the limiting groove.

12. The composite filter element according to claim 5, characterized in that: The filter bottle cover has a plurality of first water flow channels, which are connected to the accommodating cavity; the composite filter element also includes a plurality of adapters, which are plugged into the inlet ends of the plurality of first water flow channels.

13. The composite filter element according to claim 12, characterized in that: The filter bottle cover is provided with a joint limiting groove, the adapter is provided with a joint limiting portion, and the joint limiting portion is limitedly arranged in the joint limiting groove.

14. The composite filter element according to claim 5, characterized in that: The composite filter element also includes a decorative cover, which is snap-connected with the filter bottle cover.

15. The composite filter element according to claim 14, characterized in that: The filter bottle cover is provided with bayonet holes on two opposite sides, and the decorative cover is provided with a hook that is engaged with the bayonet holes.

16. The composite filter element according to claim 15, characterized in that: The filter bottle cover is provided with a positioning groove, and the decorative cover is provided with a positioning column adapted to the positioning groove, and the positioning column extends into the positioning groove.

17. The composite filter element according to any one of claims 1 to 16, characterized in that: The first filter component includes a pre-filter element, a post-filter element and a separator, the separator is arranged in the first chamber and divides the first chamber into a first filter chamber and a second filter chamber, the pre-filter element is arranged in the first filter chamber, and the post-filter element is arranged in the second filter chamber; the second filter component includes a reverse osmosis filter element, the reverse osmosis filter element is sleeved on the outer wall surface of the central tube, and is located in the second chamber.

18. A water purifier, characterized in that: Comprising the composite filter element as described in any one of claims 1 to 17.

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