Filter element device and water purification equipment

Abstract

The utility model discloses a filter element device and water purifying equipment, the filter element device comprises a first filter bottle and a second filter bottle, the end part of the first filter bottle is provided with a boss part and a first connecting part, the boss part extends along the axial direction of the first filter bottle, the outer diameter of the boss part is smaller than the outer diameter of the first filter bottle, and the boss part is provided with a water through hole; a second connecting part is arranged at the end part of the second filter bottle, the boss part is in sealed connection with the second filter bottle, and a water channel between the first filter bottle and the second filter bottle is communicated through the water through opening; the first connecting part is detachably connected with the second connecting part, and a connecting sealing surface between the boss part and the second filter bottle and a connecting position between the first connecting part and the second connecting part are arranged along the radial direction of the first filter bottle or the second filter bottle. The connecting position and the waterway sealing position between every two adjacent filter bottles are arranged in the radial direction of the filter bottles, the length sizes of the filter bottles are effectively utilized, the internal space of the filter bottles is increased, and therefore the volume of internal filter materials is increased, and the filtering capacity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field especially relates to a filter element device and water purification equipment. BACKGROUND

[0002] The prior art composite filter element device comprises a plurality of filter bottles, each filter bottle is provided with a filter element, and two adjacent filter bottles are detachably connected and water channels are communicated after the abutment of the two adjacent filter bottles.

[0003] The above information disclosed in the background section is only for the purpose of increasing the understanding of the background of the present application, and therefore, it can include matters known by those skilled in the art but not constitute prior art. SUMMARY

[0004] In view of the problems in the background art, the utility model provides a filter element device and water purification equipment, the connection position and water channel sealing position between two adjacent filter bottles are arranged along the radial direction of the filter bottle, effectively utilizing the length dimension of the filter bottle, increasing the internal space of the filter bottle, thereby increasing the internal filter material volume and improving the filtering capacity.

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

[0006] In some embodiments of the present application, a filter element device is provided, comprising:

[0007] The first filter bottle is provided with a boss portion and a first connecting portion at the end portion, the boss portion extends along the axial direction of the first filter bottle, the outer diameter of the boss portion is smaller than the outer diameter of the first filter bottle, and a water passage is arranged on the boss portion.

[0008] The second filter bottle is provided with a second connecting portion at the end portion, the boss portion is sealingly connected with the second filter bottle, and the water passage communicates the water channel between the first filter bottle and the second filter bottle.

[0009] The first connecting part is detachably connected with the second connecting part, and the connecting sealing surface between the boss part and the second filter bottle and the connecting position of the first connecting part and the second connecting part are arranged along the radial direction of the first filter bottle or the second filter bottle.

[0010] In some embodiments of the present application, the first connecting part is located on the outer circumferential side of the boss part; the second filter bottle is provided with an extension part at a position close to the end of the inner circumferential wall, the extension part extends along the circumferential direction of the second filter bottle, and the outer circumferential side of the extension part is provided with the second connecting part; the outer circumferential wall of the boss part is sealingly connected with the inner circumferential wall of the extension part.

[0011] In some embodiments of the present application, the first connecting part includes a first connecting axial part and a first connecting radial part, the first connecting axial part extends along the axial direction from the end of the first filter bottle, the first connecting radial part extends along the radial direction from the end of the first connecting axial part, and a first clamping groove is formed between the first connecting axial part and the end face of the first filter bottle; the end face of the second filter bottle is provided with a notch part, the second connecting part is located at the notch part, the second connecting part includes a second connecting radial part, the second connecting radial part extends along the radial direction from the outer circumferential wall of the extension part, one end of the second connecting radial part is connected with one end of the notch part, and a second clamping groove is formed between the second connecting radial part and the notch part; the first connecting radial part is clamped in the second clamping groove, and the second connecting radial part is clamped in the first clamping groove.

[0012] In some embodiments of the present application, the second connecting radial part is located at one end of the notch part, and the first connecting part rotates along the notch part to be clamped with the second connecting part.

[0013] In some embodiments of the present application, the first connecting radial part is provided with a first stop part on one side facing the boss part, the outer side of the second connecting radial part is provided with a second stop part, and the first stop part abuts against the second stop part to limit the relative rotation between the first filter bottle and the second filter bottle.

[0014] In some embodiments of the present application, the end of the first filter bottle is provided with at least two first connecting parts, and the second filter bottle is correspondingly provided with at least two second connecting parts.

[0015] In some embodiments of the present application, the widths of the first connecting radial parts of the at least two first connecting parts are different.

[0016] In some embodiments of the present application, the second filter bottle is provided with a second filter material.

[0017] The boss part comprises a first boss and a second boss, the first boss extends along the circumference of the first filter bottle, the first boss is located at the outer periphery of the second boss, the first boss is provided with a second water inlet, and the second boss is provided with a third water inlet; the first filter bottle is sequentially provided with a first pipe barrel, a second pipe barrel and a third pipe barrel in the radial direction close to the axis, the second water inlet is formed between the first pipe barrel and the second pipe barrel, and the third water outlet is formed between the second pipe barrel and the third pipe barrel; water flows into the space where the second filter material is located through the second water inlet and the second water outlet, and the waste water generated in the filtering process is discharged through the third water inlet and the third water outlet.

[0018] In some embodiments of the application, the second filter bottle is further provided with a third filter core, the second filter material is arranged around the outer periphery of the third filter core, the second boss is provided with an opening for the third pipe barrel to protrude, the end of the third filter core is detachably connected with the third pipe barrel, and the filtered water obtained by filtering the second filter material flows out through the third pipe barrel.

[0019] In some embodiments of the application, a water purification device is provided, comprising the filter core device as described above.

[0020] Compared with the prior art, the application has the following advantages and positive effects:

[0021] In the filter core device disclosed in the application, the first filter bottle and the second filter bottle are detachably connected through the first connecting part and the second connecting part, the connecting position of the first connecting part and the second connecting part is located at the outer periphery side of the water flow channel after the first filter bottle and the second filter bottle are connected, and the first connecting part and the second connecting part are arranged in the radial direction of the filter bottle, so that the length size of the filter bottle device can be effectively utilized under the condition of the same filter bottle device length, the volume occupied by the assembly and sealing structure is reduced, the internal space of the filter bottle device is increased, the volume of the filter material is increased, and the filtering capacity is improved.

[0022] Other characteristics and advantages of the application will become more apparent after reading the specific implementation manner of the application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0024] Figure 1A perspective view of a filter cartridge assembly according to some embodiments;

[0025] Figure 2 A perspective view of a filter cartridge assembly according to some embodiments;

[0026] Figure 3 An exploded view of a filter cartridge assembly according to some embodiments;

[0027] Figure 4 A cross-sectional view of a filter cartridge assembly according to some embodiments;

[0028] Figure 5 A water flow path diagram of a filter cartridge assembly according to some embodiments;

[0029] Figure 6 A water flow path diagram of a filter cartridge assembly according to some embodiments;

[0030] Figure 7 A perspective view of a first filter cartridge according to some embodiments;

[0031] Figure 8 A cross-sectional view of a first filter cartridge according to some embodiments;

[0032] Figure 9 A perspective view of a first bottle body according to some embodiments;

[0033] Figure 10 A perspective view of a first bottle body according to some embodiments; Figure 9 A close-up view of section A in the above figure;

[0034] Figure 11 A perspective view of a first bottle body according to some embodiments;

[0035] Figure 12 A cross-sectional view of a first bottle body according to some embodiments;

[0036] Figure 13 A perspective view of a first end cap according to some embodiments;

[0037] Figure 14 A perspective view of a second end cap according to some embodiments;

[0038] Figure 15 A perspective view of a second filter bottle according to some embodiments;

[0039] Figure 16 A cross-sectional view of a second filter bottle according to some embodiments;

[0040] Figure 17 A perspective view of a third filter cartridge according to some embodiments;

[0041] Figure 18 A structural view of a second bottle body according to some embodiments;

[0042] Figure 19 A Figure 18 An enlarged view of the B portion in the middle;

[0043] Figure 20 A structural view of a second bottle body according to some embodiments;

[0044] Figure 21 A sectional view of a second bottle body according to some embodiments;

[0045] Figure 22 A structural view of a third end cap according to some embodiments. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0047] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0049] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "over" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0051] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0052] In some embodiments of the present application, a water purification device, such as a water purifier, is provided. The water purification device includes a filter core device, which filters raw water to provide purified water for users.

[0053] Figure 1 Figure 2 is a schematic view of an axial structure of the filter core device, Figure 2 Figure 3 is a schematic view of the filter core device from an end, Figure 3 Figure 4 is a schematic view of the filter core device disassembled, Figure 4 Figure 5 is a sectional view of the filter core device.

[0054] The filter core device includes a first filter bottle 01. Referring to Figure 9 and Figure 10 The end of the first filter bottle 01 is provided with a boss portion 500 and a first connecting portion 110. The boss portion 500 extends along the axial direction of the first filter bottle 01, and the outer diameter of the boss portion 500 is smaller than the outer diameter of the first filter bottle 01. The first connecting portion 110 is located on the outer peripheral side of the boss portion 500, and a water passage is provided on the boss portion 500.

[0055] The filter core device further includes a second filter bottle 02. Referring to Figures 18 to 20The end of the second filter bottle 02 is provided with a second connecting part 210. The boss part 500 is sealingly connected with the second filter bottle 02, and the water passage between the first filter bottle 01 and the second filter bottle 02 is communicated through the water passage. In other words, the boss part 500 is inserted into one end of the second filter bottle 02, the outer peripheral wall of the boss part 500 is matched with the inner wall of the second filter bottle 02, a sealing device such as a sealing ring is arranged on the insertion and matching surface of the two, so as to realize the sealing of the insertion position, the insertion and matching surface of the boss part 500 and the second filter bottle 02 is the connecting sealing surface between the boss part 500 and the second filter bottle 02, so as to realize the sealing of the water passage in the filter bottle and avoid water leakage.

[0056] The first connecting part 110 is detachably connected with the second connecting part 210, so as to realize the detachable connection between the first filter bottle 01 and the second filter bottle 02.

[0057] The first connecting part 110 is located on the outer peripheral side of the boss part 500, and there is a certain distance between the first connecting part 110 and the boss part 500. The connecting sealing surface between the boss part 500 and the second filter bottle 02 and the connecting position of the first connecting part 110 and the second connecting part 210 are arranged along the first filter bottle 01 or the second filter bottle 02. In this way, the connecting position (referring to the connecting position of the first connecting part 110 and the second connecting part 210) between the two filter bottles and the water passage sealing position (referring to the insertion and sealing surface between the boss part 500 and the second filter bottle 02) are arranged along the radial direction of the filter bottle. In this way, the boss part 500 does not need to be arranged with a high height, and in the case that the length of the filter bottle is certain, the axial space in the filter bottle can be increased, so as to increase the volume of the filter material that can be installed inside, and improve the filtering capacity.

[0058] The connecting sealing surface between the boss part 500 and the second filter bottle 02 and the connecting position of the first connecting part 110 and the second connecting part 210 are arranged along the radial direction of the first filter bottle 01 or the second filter bottle 02, and there are two specific embodiments.

[0059] Firstly, one end of the second filter bottle 02 is open, the boss part 500 is inserted into the opening, and the outer peripheral wall of the boss part 500 is sealingly connected with the inner peripheral wall surrounding the opening.

[0060] Secondly, the second filter bottle 02 is inserted into the boss part 500. Specifically, the second filter bottle 02 is provided with an extension rib extending towards the boss part 500, and the boss part 500 is provided with a slot corresponding to the extension rib. The extension rib is inserted into the slot, and the insertion position is sealed.

[0061] In some embodiments of the present application, the second filter bottle 02 is provided with an extension 240 at a position close to the end of the inner circumferential wall of the second filter bottle 02. The extension 240 extends along the circumference of the second filter bottle 02. The extension 240 is a ring structure, and the outer circumferential side of the extension 240 is provided with a second connecting part 210. In other words, the ring-shaped extension 240 is located on the inner side of the inner circumferential wall of the second filter bottle 02, and there is a gap between the extension 240 and the inner circumferential wall of the second filter bottle 02.

[0062] In combination Figure 4 , after the first filter bottle 01 and the second filter bottle 02 are connected, the outer circumferential wall of the boss part 500 is sealingly connected with the inner circumferential wall of the extension 240, and a sealing ring is arranged at the connection position. The first connecting part 110 and the second connecting part 210 achieve fixed connection between the first filter bottle 01 and the second filter bottle 02. The first connecting part 110 and the second connecting part 210 are detachably connected. When it is necessary to replace the internal filter element, the connection between the first connecting part 110 and the second connecting part 210 is first released.

[0063] The water passage between the first filter bottle 01 and the second filter bottle 02 is communicated through the water passage on the boss part 500. The connection position of the first connecting part 110 and the second connecting part 210 is located on the outer circumferential side of the boss part 500, and the boss part 500 is provided with a water passage. In other words, the connection position of the first connecting part 110 and the second connecting part 210 is located on the outer circumferential side of the water passage after the first filter bottle 01 and the second filter bottle 02 are connected, and the two are arranged along the radial direction of the filter bottle. In this way, in the case of the same length of the filter bottle device, the length dimension of the filter bottle device can be effectively utilized, the volume occupied by the assembly and sealing structure is reduced, the internal space of the filter bottle device is increased, the volume of the filter material is increased, and the filtering capacity is improved.

[0064] In addition, by sealingly connecting the outer circumferential wall of the boss part 500 with the inner circumferential wall of the extension 240 on the second filter bottle 02, the diameter of the boss part 500 can be made as large as possible within the limited radial dimension. In this way, the size of the water passage and the water passage on the boss part 500 can be made as large as possible, which helps to improve the water flow and the smoothness of the water flow.

[0065] In some embodiments of the present application, referring to Figure 10 , the first connecting part 110 includes a first connecting axial part 111 and a first connecting radial part 112. The first connecting axial part 111 extends along the axial direction from the end of the first filter bottle 01, and the first connecting axial part 111 also extends along the circumference of the first bottle body 100 for a distance. The first connecting radial part 112 extends along the radial direction from the end of the first connecting axial part 111, and the first connecting axial part 111 and the end surface of the first filter bottle 01 form a first clamping groove 124.

[0066] Referring to Figures 18 to 20, the end face of the second filter bottle 02 is provided with a notch part 212, and the second connecting part 210 is located at the notch part 212. The second connecting part 210 comprises a second connecting radial part 211 extending radially from the outer peripheral wall of the extension part 240, and extending along the circumference of the second bottle body 200 for a distance. One end of the second connecting radial part 211 is connected to one end of the notch part 212, and a second clamping groove 214 is formed between the second connecting radial part 211 and the notch part 212.

[0067] With reference to Figure 1 , when assembling the first filter bottle 01 and the second filter bottle 02, the first connecting part 110 is placed at the notch part 212, and then the first filter bottle 01 or the second filter bottle 02 is screwed to rotate the first filter bottle 01 relative to the second filter bottle 02, so that the first connecting radial part 112 is clamped in the second clamping groove 214, and the second connecting radial part 211 is clamped in the first clamping groove 124, thereby realizing the connection of the first filter bottle 01 and the second filter bottle 02.

[0068] When disassembling the first filter bottle 01 and the second filter bottle 02, the first filter bottle 01 or the second filter bottle 02 is unscrewed in reverse, so that the first filter bottle 01 and the second filter bottle 02 are disconnected. The first connecting part 110 and the second connecting part 210 are connected by screwing and clamping, which is convenient to operate.

[0069] In some embodiments of the present application, with reference to Figure 19 and Figure 20 , the second connecting radial part 211 is located at one end of the notch part 212, so that the other end of the notch part 212 provides space for the first connecting part 110. When installing, the first connecting part 110 is placed at the other end of the notch part 212, and then the first filter bottle 01 or the second filter bottle 02 is screwed, so that the first connecting part 110 is rotated along the notch part 212 to the second connecting part 210 until it is clamped with the second connecting part 210.

[0070] The second connecting radial part 211 is located at one end of the notch part 212, and the connection position between the second connecting radial part 211 and one end of the notch part 212 serves as a rotation limiting part for the first connecting part 110. When the first connecting part 110 is rotated along the notch part 212 to one end of the notch part 212, it is rotated to the position, and the first connecting part 110 is clamped with the second connecting part 210.

[0071] In some embodiments of the present application, with reference to Figure 10 , the first connecting radial part 112 is provided with a first limiting part 123 on the side facing the boss part 500. With reference to Figure 19 , the outer side of the second connecting radial part 211 is provided with a second limiting part 213. The first limiting part 123 and the second limiting part 213 abut to limit the relative rotation between the first filter bottle 01 and the second filter bottle 02.

[0072] For example, the first stop portion 123 is a protruding structure, and the second stop portion 213 is a groove structure. The protruding structure is embedded in the groove structure to achieve the stop.

[0073] In some embodiments of the present application, referring to Figure 20 The second connecting radial portion 211 is provided with a plurality of reinforcing ribs 215 on the side away from the notch portion 212, thereby improving the structural strength of the second connecting portion 210.

[0074] In some embodiments of the present application, referring to Figure 9 The end of the first filter bottle 01 is provided with at least two first connecting portions 110, and the at least two first connecting portions 110 are arranged at intervals along the circumference of the first filter bottle 01. Referring to Figure 20 The second filter bottle 02 is correspondingly provided with at least two second connecting portions 210, and the at least two second connecting portions 210 are arranged at intervals along the circumference of the second filter bottle 02. The at least two first connecting portions 110 and the at least two second connecting portions 210 are connected one by one, which helps to improve the connection reliability between the first filter bottle 01 and the second filter bottle 02.

[0075] For example, the first filter bottle 01 is provided with two first connecting portions 110, and the second filter bottle 02 is provided with two second connecting portions 210.

[0076] In some embodiments of the present application, referring to Figure 9 The widths W of the first connecting radial portions 112 of the at least two first connecting portions 110 are not the same, which plays a foolproof role and enables the internal waterway to be smoothly connected after the first filter bottle 01 and the second filter bottle 02 are docked.

[0077] In some embodiments of the present application, the filter core device comprises a first filter core 10. In some embodiments, the first filter core 10 is also referred to as a first filter bottle 01. Figure 7 A structural view of the first filter core 10 is shown in Figure 8 A sectional view of the first filter core 10 is shown in

[0078] The first filter core 10 comprises a first bottle body 100, and the first bottle body 100 is provided with a first filter material 11. The first bottle body 100 is further provided with a first water flow channel 610, a second water inlet flow channel 620, a second water outlet flow channel 650, and a third water outlet flow channel 660. The first water flow channel 610 is provided with the first filter material 11 on the water flow path.

[0079] The filter core device further comprises a second filter core 20 and a third filter core 30. The third filter core 30 is arranged in the second filter core 20. Figure 15 A structural view of the second filter core 20 and the third filter core 30 after assembly is shown in Figure 16Figure 7 is a sectional view of the assembled second filter element 20 and third filter element 30, Figure 17 Figure 8 is a structural view of the third filter element 30. In some embodiments, the structure of the assembled second filter element 20 and third filter element 30 is referred to as the second filter bottle 02.

[0080] The second filter bottle 02 includes a second bottle body 200. The second filter element 20 includes a second filter material 21. The third filter element 30 includes a third filter material 31. Both the second filter material 21 and the third filter material 31 are arranged in the second bottle body 200.

[0081] The second filter element 20 further includes a third water flow channel 630 and a fourth water flow channel 640. The second filter material 21 is arranged in the water flow path between the third water flow channel 630 and the fourth water flow channel 640. The third filter element 30 is detachably arranged in the fourth water flow channel 640.

[0082] The first filter element 10 and the second filter element 20 are detachably connected. In other words, the first filter bottle 01 and the second filter bottle 02 are detachably connected. In other words, the first bottle body 100 and the second bottle body 200 are detachably connected. The water outlet end of the third filter element 30 is detachably connected to the first filter element 10 and communicates with the second water outlet flow channel 650.

[0083] After the first filter bottle 01 and the second filter bottle 02 are connected, that is, after the first filter element 10 and the second filter element 20 and the third filter element 30 are connected, the water paths between the first filter bottle 01 and the second filter bottle 02 are communicated, the water inlet end of the third water flow channel 630 is communicated with the second water inlet flow channel 620, and the water outlet end of the third water flow channel 630 is communicated with the third water outlet flow channel 660.

[0084] Water to be filtered flows into the third water flow channel 630 through the second water inlet flow channel 620, flows through the second filter material 21 for filtration, and the filtered water flows into the fourth water flow channel 640. The filtered water is filtered by the third filter element 30 and then flows out through the second water outlet flow channel 650. The waste water generated during the filtration of the second filter material 21 is discharged through the third water outlet flow channel 660. For example, the second filter material 21 is an RO membrane.

[0085] The water filtering device in the present embodiment includes the first filter element 10, the second filter element 20, and the third filter element 30. The third filter element 30 is arranged in the second filter element 20. The first filter element 10 and the second filter element 20 are detachably connected. The first filter element 10 is further detachably connected to the third filter element 30. In this way, when the service life of a certain filter element expires or is blocked, the individual replacement of the filter elements can be realized, thereby reducing the cost of replacing the filter elements.

[0086] For example, refer to Figure 3When the first filter cartridge 10 and the second filter cartridge 20 are separated, the first filter cartridge 10 can be replaced alone; and when the third filter cartridge 30 is taken out of the second filter cartridge 20, the second filter cartridge 20 and the third filter cartridge 30 can be replaced alone.

[0087] In some embodiments of the present application, with reference to Figure 4 , Figure 5 , Figure 6 , Figure 11 and Figure 12 , the end of the first filter cartridge 10 is provided with a first water inlet 141, a first water outlet 142, a second water inlet 143, a second water outlet 144 and a third water outlet 145. The first water inlet 141 is in communication with the water inlet end of the first water flow channel 610, and the first water outlet 142 is in communication with the water outlet end of the first water flow channel 610. The second water inlet 143 is in communication with the second water inlet flow channel 620, the second water outlet 144 is in communication with the second water outlet flow channel 650, and the third water outlet 145 is in communication with the third water outlet flow channel 660.

[0088] The water flow path is as follows: with reference to Figure 5 , raw water enters the first water flow channel 610 through the first water inlet 141, and after being filtered by the first filter material 11, first filtered water is obtained, which flows out of the first filter cartridge 10 from the first water outlet 142; with reference to Figure 6 , the first filtered water passes through the water channel plate or external pipeline, and then enters the second water flow channel through the second water inlet 143, enters the third water flow channel 630 from the second water inlet flow channel 620, and after being filtered by the second filter material 21, second filtered water is obtained; the second filtered water then enters the fourth water flow channel 640, is filtered by the third filter cartridge 30 to obtain third filtered water, which is sequentially discharged from the second water outlet flow channel 650 and the second water outlet 144; and the wastewater generated when the first filtered water is filtered by the second filter material 21 is sequentially discharged from the third water outlet flow channel 660 and the third water outlet 145.

[0089] Figure 5 The solid arrows in the figure represent water inflow, and the dashed arrows represent water outflow. Figure 6 The solid arrows in the figure represent water inflow, the single dashed arrows represent wastewater, and the double dashed arrows represent clean water. In this embodiment, the water flow path is to first perform the filtering process shown in Figure 5 , and then perform the filtering process shown in Figure 6 .

[0090] In this embodiment, the first filter material 11 is PP cotton, activated carbon, etc., at this time the first filter core 10 is used as a front filter core to remove silt, rust and other large particle impurities in raw water, etc., to obtain first-stage filtered water. The second filter material 21 is an RO membrane, nanofiltration, ultrafiltration, etc., to further filter out organic matter, residual chlorine and other soluble impurities in the first-stage filtered water, etc., to obtain second-stage filtered water. The third filter material 31 is a carbon rod, etc., at this time the third filter material 31 is used as a rear filter core to improve the taste of the second-stage filtered water, to obtain third-stage filtered water.

[0091] The water inlet and the water outlet of the whole filter core device are arranged at one end of the first filter core 10, facilitating the connection with the pipeline of the external waterway plate. The water supply path and the water outlet path of the second filter bottle 02 pass through the first filter core 10, and the internal structure of the first filter core 10 is compact, which is helpful to realize the miniaturization and compactness design of the filter core device. At the same time, in the limited volume of the filter core device, a large installation space is provided for the second filter material 21 and the third filter material 31, the volume of the filter material is increased, and the filtering capacity is improved.

[0092] In some other embodiments of the present application, the water flow path process is as follows: referring to Figure 6 , the raw water enters the second water inlet flow channel 620 through the second water inlet 143, enters the third water flow channel 630 from the second water inlet flow channel 620, and obtains first-stage filtered water after being filtered by the second filter material 21; the first-stage filtered water flows into the fourth water flow channel 640, and obtains second-stage filtered water after being filtered by the third filter core 30, and the second-stage filtered water flows out in turn through the second water outlet flow channel 650 and the second water outlet 144; referring to Figure 5 , the second-stage filtered water passes through the waterway plate or the external pipeline, enters the first water flow channel 610 through the first water inlet 141, and obtains third-stage filtered water after being filtered by the first filter material 11, and the third-stage filtered water flows out from the first water outlet 142; the wastewater generated when the raw water is filtered by the first filter material 11 is discharged in turn through the third water outlet flow channel 660 and the third water outlet 145.

[0093] Figure 5 The solid arrows in the figure represent water inlet, and the dashed arrows represent water outlet. Figure 6 The solid arrows in the figure represent water inlet, and the dashed arrows represent water outlet. Figure 6 The solid arrows in the figure represent water inlet, and the dashed arrows represent water outlet. Figure 5 The solid arrows in the figure represent water inlet, and the dashed arrows represent water outlet.

[0094] In this embodiment, the second filter material 21 is an RO membrane, nanofiltration, ultrafiltration, etc., to filter out organic matter, residual chlorine and other soluble impurities in the raw water, etc., to obtain first-stage filtered water. The third filter material 31 and the second filter material 21 are both used as rear filter cores, which can be activated carbon, etc., to improve the taste of the first-stage filtered water.

[0095] In some embodiments of the present application, referring to Figure 7 andFigure 8 The first filter bottle 01 is provided with a first end cover 410 and a second end cover 420, which are arranged along the axial direction of the first bottle body 100. Figure 13 It is a structure diagram of the first end cover 410, Figure 14 It is a structure diagram of the second end cover 420.

[0096] The first bottle body 100 is provided with a first tube 310, a second tube 320 and a third tube 330 in the radial direction towards the axis of the first bottle body 100. In other words, the first tube 310, the second tube 320 and the third tube 330 are all hollow and through the two ends of the tube structure, and the first tube 310, the second tube 320 and the third tube 330 are sequentially sleeved from outside to inside. There is a gap between the first tube 310 and the second tube 320, forming a second water inlet flow channel 620. There is a gap between the second tube 320 and the third tube 330, forming a third water outlet flow channel 660. The internal hollow cavity of the third tube 330 forms a second water outlet flow channel 650. The three tubes are sequentially sleeved to form different water flow channels, and the structure is compact.

[0097] The first filter material 11 is arranged between the first end cover 410 and the second end cover 420, and the first end cover 410 and the second end cover 420 limit the first filter material 11. The first filter material 11 is arranged around the outer periphery of the first tube 310 and located between the first tube 310 and the inner peripheral wall of the first bottle body 100, and the structure is compact.

[0098] In some embodiments of the present application, with reference to Figure 8 , Figure 11 and Figure 12 , the first side end inner wall of the first bottle body 100 is sequentially provided with a first annular rib 121, a second annular rib 122, a third annular rib 123, a fourth annular rib 124 and a fifth annular rib 125 in the radial direction towards the axis of the first bottle body 100. The first annular rib 121 and the inner peripheral wall of the first bottle body 100 form a first annular groove 131. The first annular rib 121 and the second annular rib 122 form a second annular groove 132. The second annular rib 122 and the third annular rib 123 form a third annular groove 133. The third annular rib 123 and the fourth annular rib 124 form a fourth annular groove 134. The fourth annular rib 124 and the fifth annular rib 125 form a fifth annular groove 135.

[0099] The second end of the first tube 310 is sealingly connected with the second annular rib 122, and a sealing ring is arranged at the connection. The second end of the second tube 320 is sealingly connected with the third annular rib 123, and a sealing ring is arranged at the connection. The second end of the third tube 330 is sealingly connected with the fourth annular rib 124, and a sealing ring is arranged at the connection.

[0100] The first water inlet 141 is communicated with the first annular groove 131, and the first water outlet 142 is communicated with the second annular groove 132. In other words, the water inlet side of the first water flow channel 610 is communicated with the first annular groove 131, and the water flowing from the first water inlet 141 flows into the first water flow channel 610 through the first annular groove 131. The water outlet side of the first water flow channel 610 is communicated with the second annular groove 132, and the water flowing out of the water outlet side of the first water flow channel 610 flows out through the second annular groove 132 and the first water outlet 142.

[0101] The second water inlet 143 is communicated with the third annular groove 133. In other words, the second water inlet 143, the third annular groove 133 and the second water flow channel 620 are communicated, and the water flowing from the second water inlet 143 flows into the second water flow channel 620 through the third annular groove 133.

[0102] The second water outlet 144 is communicated with the fifth annular groove 135. In other words, the inner cavity of the third barrel 330, the fifth annular groove 135 and the second water outlet 144 are communicated, and the water flowing out of the third barrel 330 flows out through the fifth annular groove 135 and the second water outlet 144.

[0103] The third water outlet 145 is communicated with the fourth annular groove 134. In other words, the third water flow channel 660, the fourth annular groove 134 and the third water outlet 145 are communicated, and the water flowing out of the third water flow channel 660 flows out through the fourth annular groove 134 and the third water outlet 145.

[0104] The first filter bottle 01 is compact in structure by communicating the water outlets with different functions with different water flow channels through the annular ribs and annular grooves.

[0105] In some embodiments of the present application, with reference to Figure 15 and Figure 16 The third end cover 430 is arranged in the second bottle body 200, and the second filter material 21 is limited in the second bottle body 200 by the third end cover 430. Figure 22 It is a structure diagram of the third end cover 430.

[0106] The first end of the second bottle body 200 is provided with an opening for exposing the third end cover 430, and the third end cover 430 is detachably connected with the first end of the first bottle body 100. The first bottle body 100 and the second bottle body 200 are detachably connected, the third end cover 430 and the first bottle body 100 are detachably connected, the first bottle body 100 limits the third end cover 430, and the water path between the first bottle body 100 and the second bottle body 200 can be communicated after the first bottle body 100 and the second bottle body 200 are docked. The second bottle body 200 does not need to be additionally configured with a structure for fixing the third end cover 430, and relies on the first bottle body 100 to limit the third end cover 430, so that the structure is compact.

[0107] In some embodiments of the present application, Figure 17A structure view of the third filter element 30. Referring to Figure 4 、 Figure 17 and Figure 22 , the third end cover 430 is provided with an opening for the third filter element 30 to protrude, the first end of the first bottle body 100 is provided with an opening for the third tube 330 to protrude, and the water outlet end of the third filter element 30 is detachably connected with the third tube 330.

[0108] After the third filter element 30 is connected with the third tube 330, the water flow path where the third filter element 30 is located is in communication with the second water outlet flow channel 650 of the inner cavity of the third tube 330. The second filter bottle 02 does not need to additionally configure a limiting structure for the third filter element 30, and the third filter element 30 is limited in the second filter bottle 02 by the third tube 330, so that the structure is compact.

[0109] In some embodiments of the present application, the first end of the first tube 310 is connected with the first end cover 410, and the first end of the first tube 310 is opposite to the second end. The first end cover 410 is provided with a first water passage 413, and the first end of the first bottle body 100 is provided with a second water passage 511. After the first filter bottle 01 and the second filter bottle 02 are docked, the second water inlet flow channel 620, the first water passage 413, the second water passage 511 and the water inlet end of the third water flow channel 630 are sequentially in communication.

[0110] The first end cover 410 plays a role of fixing the first tube 310, and also plays a role of limiting the first filter material 11. The first end cover 410 is provided with the first water passage 413, and also plays a role of connecting the water path. The multifunctional integration of the first end cover 410 is helpful to the design of compact structure.

[0111] Since the third end cover 430 is limited and fixed by the first bottle body 100, the water flowing out of the first water passage 413 of the first end cover 410 will directly enter the third water flow channel 630 where the second filter material 21 is located, so as to shorten the water path, simplify the installation structure, increase the filter material volume under the limited filter bottle volume, and help to improve the filtering capacity.

[0112] In some embodiments of the present application, the first end cover 410 is provided with a plurality of fifth extension ribs 415 arranged at intervals on the side away from the first filter material 11, and the first water passage 413 is formed between adjacent two fifth extension ribs 415. The fifth extension rib 415 abuts against the end portion of the first bottle body 100, which on one hand limits the first end cover 410, and on the other hand keeps a gap between the first end cover 410 and the end portion of the first bottle body 100 for water flow.

[0113] In some embodiments of the present application, the first end of the second tube 320 is connected to the first end of the first bottle 100, and the first end of the second tube 320 is opposite to the second end. The first end of the first bottle 100 is provided with a third water outlet 521, and the third end cover 430 is provided with a fourth water outlet 431. The water outlet end of the third water flow channel 630, the fourth water outlet 431, the third water outlet 521, and the third water outlet channel 660 are sequentially communicated.

[0114] Since the third end cover 430 is limited and fixed by the first bottle 100, when the first filter bottle 01 is docked with the second filter bottle 02, the third water flow channel 630 and the third water outlet channel 660 are communicated through the third water outlet 521, the fourth water outlet 431. The waste water flowing out of the third water flow channel 630 can be directly discharged through the fourth water outlet 431, the third water outlet 521, and the third water outlet channel 660.

[0115] In some embodiments of the present application, referring to Figure 8 and Figure 14 , the second end cover 420 is provided with a first extension rib 421 on the side away from the first filter material 11. The first extension rib 421 is sealingly connected with the first annular rib 121, so as to realize the fixed installation of the second end cover 420. The second end cover 420 spans the first annular groove 131 and the second annular groove 132, and the second end cover 420 is provided with a water outlet.

[0116] Referring to Figure 8 and Figure 13 , the first end cover 410 is sealingly connected with the first bottle 100, so as to realize the fixed installation of the first end cover 410 in the first bottle 100. The water flowing into the first water flow channel 610 from the first water inlet 141 is filtered by the first filter material 11, and then flows into the second annular groove 132 through the water outlet on the second end cover 420, and then flows out from the first water outlet 142.

[0117] In some embodiments of the present application, referring to Figure 4 , the first bottle 100 is further provided with a fourth tube 340. The fourth tube 340 is arranged on the outer peripheral side of the first tube 310. The fourth tube 340 divides the space between the first tube 310 and the inner peripheral wall of the first bottle 100 into a plurality of subspaces. Any one of the subspaces is provided with a first filter material 11, and the water flow channels in the plurality of subspaces are connected in parallel.

[0118] The water flowing into the first water flow channel 610 from the first water inlet 141 is divided into each of the subspaces, filtered by the corresponding first filter material 11, and then flows out from the first water outlet 142. In the case that the first filter bottle 01 is large in diameter and short in length, the plurality of first filter materials 11 are arranged in parallel, which helps to improve the filtering capacity.

[0119] For example, a fourth tube 340 is provided inside the first bottle body 100. The fourth tube 340 divides the space between the first tube 310 and the inner peripheral wall of the first bottle body 100 into two sub-spaces. The outer sub-space is defined as the first outer water flow channel 611, and the inner sub-space is defined as the first inner water flow channel 612. The first outer water flow channel 611 is provided with a first outer filter material 011, and the first inner water flow channel 612 is provided with a first inner filter material 012.

[0120] In some embodiments of this application, reference is made to Figure 13 The first end cap 410 is provided with a first water passage hole 414 to connect the water inlet channels of two adjacent water channels. For example, the first water passage hole 414 connects the first outer water channel 611 with the first inner water channel 612.

[0121] Reference Figure 14 The second end cap 420 is provided with a second water passage hole 425, which is connected to the second annular groove 132. The filtered water after being filtered by the first filter material 11 flows into the second annular groove 132 through the second water passage hole 425 and then flows out through the first outlet 142.

[0122] Water flowing into the first annular groove 131 from the first inlet 141 first flows into the first outer water channel 611. Part of the water is filtered by the first outer filter material 011, while the other part flows into the first inner water channel 612 through the first water passage 414 and is filtered by the first inner filter material 012. The filtered water is then discharged through the second water passage 425.

[0123] The fourth tube 340 serves to separate the water channels. The first end cap 410 and the second end cap 420 serve both to install the first filter media 11 and to facilitate water flow. The first end cap 410 is sealed to the first bottle body 100, and the second end cap 420 is sealed to the first annular rib 121. The fourth tube 340 separates the water channels, forming a first external water flow channel 611 and a first internal water flow channel 612. The water passage holes on the first end cap 410 facilitate water diversion, while the water passage holes on the second end cap 420 facilitate water merging. In this way, multiple first filter media 11 can be connected in parallel within a limited space, which helps to improve water purification efficiency and effectiveness.

[0124] In some embodiments of this application, reference is made to Figure 14The second end cover 420 is provided with a second outer water passing hole 4251 and a second inner water passing hole 4252. The second outer water passing hole 4251 connects the first outer water flow channel 611 with the second annular groove 132, and the second inner water passing hole 4252 connects the first inner water flow channel 612 with the second annular groove 132. The water in the first outer water flow channel 611 flows back to the second annular groove 132 through the second outer water passing hole 4251, and the water in the first inner water flow channel 612 flows back to the second annular groove 132 through the second inner water passing hole 4252. In this way, the filtered water in the first outer water flow channel 611 and the first inner water flow channel 612 can flow back to the second annular groove 132 and then flow out from the first water outlet 142 together.

[0125] In some embodiments of the present application, with reference to Figure 14 The second end cover 420 is provided with a plurality of second extension ribs 422 on the side away from the first filter material 11. The second inner water passing hole 4252 is formed between two adjacent second extension ribs 422.

[0126] The end of the first tube 310 is provided with a first tube transverse part 311 and a first tube vertical part 312. One side of the first tube transverse part 311 abuts against the third annular rib 123, and the other side abuts against the second extension rib 422. The first tube vertical part 312 is sealingly connected with the second annular rib 122.

[0127] The first tube 310 is further pressed and limited by the abutting of the second extension rib 422 against the first tube transverse part 311. The second inner water passing hole 4252 is formed through the gap between two adjacent second extension ribs 422, and there is no need to additionally process water holes on the second end cover 420.

[0128] In some embodiments of the present application, with reference to Figure 8 The second end cover 420 is provided with a first recess 423 and a second recess 424 on the side facing the first filter material 11. The first end cover 410 is provided with a third recess 411 and a fourth recess 412 on the side facing the first filter material 11. The first outer filter material 011 is arranged between the first recess 423 and the third recess 411, the first inner filter material 012 is arranged between the second recess 424 and the fourth recess 412, and the first water passing hole 414 is in communication with the fourth recess 412. With reference to Figure 14 A stepped wall is arranged between the first recess 423 and the second recess 424, and the second outer water passing hole 4251 is arranged on the stepped wall.

[0129] In this way, by arranging recesses on the first end cover 410 and the second end cover 420, the first filter material 11 is arranged in zones, and water passing holes are arranged at different positions of the first end cover 410 and the second end cover 420 to realize the water path communication of the inner and outer water flow channels.

[0130] In some embodiments of the present application, with reference toFigure 7 and Figure 8 The end of the first filter bottle 01 is provided with a first boss 510 extending along the circumference of the first filter bottle 01, and the top surface of the first boss 510 is provided with a second water outlet 511.

[0131] The first side wall of the first boss 510 is sealingly connected to the second filter bottle 02, so as to realize the fixed connection of the first bottle body 100 and the second bottle body 200. The second side wall of the first boss 510 is sealingly connected to the third end cover 430, so as to realize the limiting and fixing of the third end cover 430.

[0132] In some embodiments of the present application, the third end cover 430 and the top surface of the first boss 510 have a gap therebetween, and the water flowing out of the second water outlet 511 flows into the second filter bottle 02 through the gap, specifically, into the third water flow channel 630. The provision of the gap ensures smooth connection of the waterway.

[0133] In some embodiments of the present application, referring to Figure 21 The stepped portion 230 is provided with a plurality of fourth extension ribs 231 arranged at intervals along the circumference thereof, and a water outlet is formed between any two adjacent fourth extension ribs 231. In combination with Figure 4 The third end cover 430 abuts against the fourth extension rib 231, so that the third end cover 430 and the stepped portion 230 have a gap therebetween for water flow.

[0134] In some embodiments of the present application, referring to Figure 7 and Figure 9 The end of the first filter bottle 01 is further provided with a second boss 520, and the first boss 510 surrounds the second boss 520. The top surface of the second boss 520 is provided with a third water outlet 521.

[0135] The second side wall of the first boss 510 and the first side wall of the second boss 520 form a slot 530, and the third end cover 430 is provided with a ring-shaped extension rib corresponding thereto, which is inserted into the slot 530, so as to realize the fixed connection of the third end cover 430 and the first bottle body 100, and realize sealing through a sealing ring. The third water outlet 521 connects the waterway between the third water outlet channel 660 and the second filter material 21, and the waste water filtered by the second filter material 21 is discharged from the third water outlet channel 660.

[0136] Referring to Figure 22 The third end cover 430 is provided with a plurality of third extension ribs 432, and a water outlet is formed between any two adjacent third extension ribs 432. The waste water filtered by the second filter material 21 flows into the third water outlet channel 660 through the water outlet and the third water outlet 521.

[0137] The water inlet and drainage flow path of the third water flow channel 630 is realized by the insertion and fixation between the third end cover 430 and the first bottle body 100, the second water outlet 511 arranged on the first boss 510, and the third water outlet 521 arranged on the second boss 520.

[0138] In some embodiments of the present application, referring to Figure 16 , the end of the second bottle body 200 is provided with a stepped portion 230, which extends towards the axis direction close to the second filter bottle 02, and the stepped portion 230 abuts against the third end cover 430 to limit the third end cover 430 to the second filter bottle 02.

[0139] In some embodiments of the present application, referring to Figure 16 , the second filter bottle 02 is provided with a third filter element 30, and the second filter material 21 is arranged around the third filter element 30. The filtered water obtained after passing through the second filter material 21 flows into the third filter element 30, and the end of the third filter element 30 is provided with a fourth end cover 440.

[0140] The mesa of the second boss 520 is provided with an opening for exposing the third tube 330, and the third tube 330 is sealingly connected with the fourth end cover 440 to limit the third filter element 30 to the second filter bottle 02. The purified water obtained after passing through the third filter element 30 flows out through the third tube 330.

[0141] Specifically, the fourth end cover 440 includes a fourth end cover first section 441 and a fourth end cover second section 442, the fourth end cover second section 442 forms a slot, and the fourth end cover first section 441 forms a water passage through hole, which is in communication with the slot. One end of the third filter element 30 is inserted into the slot of the fourth end cover second section 442, and the insertion position is sealed by a sealing ring. The fourth end cover first section 441 is inserted into the third tube 330, and the insertion position is sealed by a sealing ring. In this way, the fourth end cover 440 realizes the communication of the fourth water flow channel 640 and the second water outlet flow channel 650, and the water filtered by the third filter element 30 flows into the second water outlet flow channel 650 through the fourth end cover 440.

[0142] In some embodiments of the present application, referring to Figure 4 , the second bottle body 200 is provided with a fifth tube 350, the third filter material 31 is arranged in the inner cavity of the fifth tube 350, and the second filter material 21 is arranged around the fifth tube 350. The fifth tube 350 is provided with a water passage hole to communicate the third water flow channel 630 and the fourth water flow channel 640. The filtered water obtained after passing through the second filter material 21 in the third water flow channel 630 flows into the fifth tube 350 through the water passage hole, and then is filtered by the third filter element 30. The fourth end cover first section 441 is inserted into the fifth tube 350, and the insertion position is sealed by a sealing ring.

[0143] In some embodiments of the present application, there are three seals at the docking position of the first filter bottle 01 and the second filter bottle 02. The first seal is the insertion seal between the first bottle body 100 and the second bottle body 200. The second seal is the insertion seal between the third end cover 430 and the first bottle body 100, specifically, the extension rib of the third end cover 430 is inserted into the insertion slot 530 between the first boss 510 and the second boss 520. The third seal is the insertion seal between the fourth end cover 440 and the third tube 330. The second water passage 511 provided on the first boss 510 is matched between the first seal and the second seal to realize the communication of the second water inlet flow channel 620 and the third water flow channel 630. The third water passage 521 provided on the second boss 520 is matched between the second seal and the third seal to realize the communication of the third water flow channel 630 and the third water outlet flow channel 660.

[0144] In some embodiments of the present application, referring to Figure 4 , the first bottle body 100 includes a first bottle body main body 151 and a first bottle body cover 152, and the first bottle body main body 151 and the first bottle body cover 152 are fixed by fusion or the like. The first bottle body main body 151 is provided with annular ribs, water inlets and water outlets at one end.

[0145] When the first filter bottle 01 is assembled, the first tube 310 is sealingly inserted with the second annular rib 122; the second tube 320 is sealingly inserted with the third annular rib 123; the third tube 330 is sealingly inserted with the fourth annular rib 124; the second end cover 420 is sealingly inserted with the first annular rib 121; the fourth tube 340 is installed on the second end cover 420; one end of the first filter material 11 is installed on the second end cover 420; the first end cover 410 is installed on the other end of the first filter material 11, and the other end of the first tube 310 is sealingly inserted with the extension rib corresponding to the first end cover 410; the first bottle body cover 152 is installed, and the first bottle body cover 152 is fixedly connected with the first bottle body main body 151, and the first end cover 410 is sealingly inserted with the first bottle body cover 152, and one end of the second tube 320 is sealingly inserted with the first bottle body cover 152, specifically, the inner wall of the second boss 520.

[0146] In some embodiments of the present application, referring to Figure 4 , the second bottle body 200 includes a second bottle body main body 221 and a second bottle body cover 222, and the second bottle body main body 221 and the second bottle body cover 222 are fixed by fusion or the like.

[0147] When the second filter bottle 02 is assembled, the second filter material 21 and the fifth tube 350 are installed in the second bottle body main body 221; the third filter core 30 is installed in the fifth tube 350; the third end cover 430 is installed at one end of the second filter material 21; the second bottle body cover 222 is installed, and the second bottle body cover 222 is fixedly connected with the second bottle body main body 221.

[0148] In the description of the above-described embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0149] The above merely describes specific implementations of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A filter cartridge arrangement, characterized by The filter core device comprises: a first filter bottle, an end portion of which is provided with a boss portion and a first connecting portion, the boss portion extends along the axial direction of the first filter bottle, the outer diameter of the boss portion is smaller than the outer diameter of the first filter bottle, and a water passage is formed on the boss portion; a second filter bottle, an end portion of which is provided with a second connecting portion, the boss portion is sealingly connected with the second filter bottle, and the water passage connects the water passages between the first filter bottle and the second filter bottle; wherein the first connecting portion and the second connecting portion are detachably connected, and the connecting sealing surface between the boss portion and the second filter bottle and the connecting position of the first connecting portion and the second connecting portion are arranged along the radial direction of the first filter bottle or the second filter bottle.

2. The filter core device according to claim 1, wherein the first connecting portion is located on the outer circumferential side of the boss portion; an extension portion is arranged on the inner circumferential wall side of the second filter bottle at a position close to the end portion, the extension portion extends along the circumferential direction of the second filter bottle, and the outer circumferential side of the extension portion is provided with the second connecting portion; the outer circumferential wall of the boss portion is sealingly connected with the inner circumferential wall of the extension portion.

3. The filter core device according to claim 2, wherein the first connecting portion comprises a first connecting axial portion and a first connecting radial portion, the first connecting axial portion extends along the axial direction from the end portion of the first filter bottle, the first connecting radial portion extends along the radial direction from the end portion of the first connecting axial portion, and a first clamping groove is formed between the first connecting axial portion and the end face of the first filter bottle; the end face of the second filter bottle is provided with a notch portion, the second connecting portion is located at the notch portion, the second connecting portion comprises a second connecting radial portion, the second connecting radial portion extends along the radial direction from the outer circumferential wall of the extension portion, one end of the second connecting radial portion is connected with one end of the notch portion, and a second clamping groove is formed between the second connecting radial portion and the notch portion; the first connecting radial portion is clamped in the second clamping groove, and the second connecting radial portion is clamped in the first clamping groove.

4. The filter core device according to claim 3, wherein the second connecting radial portion is located at one end of the notch portion, and the first connecting portion is rotated along the notch portion to be clamped with the second connecting portion.

5. The filter core device according to claim 3, wherein the first connecting radial portion is provided with a first stop portion on the side facing the boss portion, the outer side of the second connecting radial portion is provided with a second stop portion, and the first stop portion and the second stop portion abut to limit the relative rotation between the first filter bottle and the second filter bottle.

6. The filter core device according to any one of claims 1 to 5, wherein the end portion of the first filter bottle is provided with at least two first connecting portions, and the second filter bottle is correspondingly provided with at least two second connecting portions.

7. The filter core device according to claim 6, wherein the widths of the first connecting radial portions of the at least two first connecting portions are different.

8. The filter core device according to any one of claims 1 to 5, wherein a second filter material is arranged in the second filter bottle. The boss part comprises a first boss and a second boss, the first boss extends along the circumference of the first filter bottle, the first boss is located at the outer circumference of the second boss, the first boss is provided with a second water inlet, and the second boss is provided with a third water inlet; The first filter bottle is sequentially provided with a first tube, a second tube and a third tube in the radial direction close to the axis, a second water inlet channel is formed between the first tube and the second tube, and a third water outlet channel is formed between the second tube and the third tube; Water flows into the space where the second filter material is located through the second water inlet channel and the second water inlet for filtration, and the wastewater generated in the filtration process is discharged through the third water inlet and the third water outlet channel.

9. The filter core device according to claim 8, characterized in that The second filter bottle is further provided with a third filter core, the second filter material is arranged around the outer circumference of the third filter core, the second boss is provided with an opening for exposing the third tube, the end of the third filter core is detachably connected with the third tube, and the filtered water obtained by the second filter material is filtered through the third filter core to obtain clean water, and the clean water flows out through the third tube.

10. A water purification apparatus characterized by comprising: The filter core device comprises any one of the filter core devices according to claims 1 to 9.

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