A filter cartridge assembly

Abstract

A filter core assembly comprises a filter core seat and a filter core, the filter core seat has a water inlet channel and a water outlet channel, the filter core is provided with a water inlet end and a water outlet end, characterized in that: further comprising a rotating member, which is arranged at the connection between the filter core seat and the filter core, the rotating member is provided with a first installation cavity for inserting the water inlet end and a second installation cavity for inserting the water outlet end, the wall surface of the first installation cavity is provided with a first water passing hole corresponding to the water inlet channel, and the wall surface of the second installation cavity is provided with a second water passing hole corresponding to the water outlet channel; a one-way valve is installed in the filter core seat and can cooperate with the filter core to close or open an intermediate channel connecting the water inlet channel and the water outlet channel. The cooperation of the rotating member and the one-way valve with the filter core makes the filter core assembly have two water paths, i.e. in the use state of the filter core, the water flow flows out after passing through the filter core seat and the filter core; in the disassembly state of the filter core, the water flow flows out after passing through only the filter core seat, so that the drinking water equipment can be normally used during replacement of the filter core.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a filter cartridge assembly. Background Technology

[0002] Water purification equipment is a common device used for deep filtration and purification of water. The purification effect of water purification equipment mainly relies on its internal filter cartridges. However, with prolonged use, impurities in the water gradually accumulate on the filter cartridges. When the filter cartridges become clogged, their filtration efficiency decreases. At this point, it is necessary to replace the filter cartridges to maintain their filtration effectiveness.

[0003] Currently, in the prior art, as shown in Chinese invention patent application number CN202510548386.8 (publication number CN120204802A), the filter element is provided with a retractable locking component at one end near the filter element seat. The filter element seat is provided with a limiting hole and a locking buckle. The locking component can extend into the limiting hole to engage the filter element with the filter element seat. The locking component is retracted into the filter element by the abutting cooperation between the locking component and the locking buckle, so that the filter element and the filter element seat are separated from each other, thereby making the filter element and the filter element seat detachably connected.

[0004] While the aforementioned filter cartridge assemblies facilitate cartridge replacement, during the removal of the cartridge from the cartridge holder, the internal water pressure of the water purifier can easily cause water to leak from the cartridge holder's interface, affecting the user experience. Existing cartridge holders typically include a one-way valve at the interface to prevent water leakage; however, these one-way valves are prone to spring aging or valve core wear, affecting their effectiveness and allowing water to still leak from the cartridge assembly. Furthermore, existing water dispensers also include mineralizer cartridges to enhance water taste. When these mineralizer cartridges are removed from the cartridge holder, the water circuit within the holder is often disconnected—the inlet and outlet are not connected. This means the water dispenser cannot dispense water without the mineralizer cartridge installed, thus affecting its normal operation. Therefore, further improvements to the filter cartridge assembly are necessary. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a filter element assembly that does not leak water and can switch water paths when replacing the filter element, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: the filter element assembly includes a filter element seat and a filter element detachably connected to the filter element seat, the filter element seat has a water inlet channel and a water outlet channel, and the filter element has a water inlet end and a water outlet end, characterized in that: it further includes...

[0007] A rotating component is provided at the connection between the filter element seat and the filter element. The rotating component is provided with a first mounting cavity for the water inlet end to be inserted and a second mounting cavity for the water outlet end to be inserted. The wall of the first mounting cavity is provided with a first water passage hole corresponding to the water inlet channel, and the wall of the second mounting cavity is provided with a second water passage hole corresponding to the water outlet channel.

[0008] A one-way valve is installed inside the filter element holder and can cooperate with the filter element to close or open the intermediate channel, which connects the inlet channel and the outlet channel.

[0009] When the filter element is installed with its inlet end inserted into the first mounting cavity and its outlet end inserted into the second mounting cavity, the filter element can close the one-way valve and block the intermediate channel. At this time, the first water passage hole is offset from the water inlet channel and the second water passage hole is offset from the water outlet channel.

[0010] When the filter element is in the above-mentioned installation state, it drives the rotating component to rotate relative to the filter element seat to the use state, and the first water passage hole is connected to the water inlet channel and the second water passage hole is connected to the water outlet channel.

[0011] When the filter element is removed from the filter element holder from the above-mentioned installed state and is in the disassembled state, the one-way valve opens the intermediate channel.

[0012] Furthermore, the outer peripheral walls of the inlet and outlet ends of the filter element are respectively provided with sealing rings that can mate with the inner peripheral walls of the first and second mounting cavities. These sealing rings ensure a sealed connection between the first water passage and the inlet end, and between the second water passage and the outlet end, preventing water leakage as it flows through these cavities and ensuring the effectiveness of the filter element assembly.

[0013] Furthermore, the one-way valve includes a valve stem and a valve core. A through hole is provided at the center of the rotating component, through which the lower end of the valve stem protrudes. The upper end of the valve stem is connected to the valve core. When the filter element is in the aforementioned installed state, its upper surface between the inlet and outlet ends abuts against the lower end of the valve stem, causing the valve stem and valve core to move upwards to block the intermediate channel. This configuration allows the valve stem and valve core to move vertically. When the filter element is in the disassembled state, the valve stem and valve core move downwards to open the intermediate channel, giving the one-way valve a tendency to maintain the open intermediate channel. When the filter element is in the installed or used state, its upper surface between the inlet and outlet ends abuts against the lower end of the valve stem, causing the valve stem and valve core to move upwards, thereby blocking the intermediate channel. This configuration allows the one-way valve to cooperate with the filter element, and the installation and removal of the filter element can control the one-way valve to block or open the intermediate channel, enabling the filter element assembly to switch water paths.

[0014] Furthermore, the one-way valve also includes a spring that is always in a compressed state. One end of the spring abuts against the valve stem, and the other end abuts against the intermediate channel. The valve stem and valve core have a downward movement tendency to keep the one-way valve with the intermediate channel open. This spring configuration ensures that the one-way valve maintains the tendency to keep the intermediate channel open.

[0015] Furthermore, the filter element holder includes a body and a connector disposed on the body. The body has a first channel extending vertically in its center, and the one-way valve is installed within this first channel. The connector has a second channel corresponding to the first channel. The first and second channels form the intermediate channel. The one-way valve can block the connection between the first and second channels. The filter element holder uses the body and connector to divide the intermediate channel into a first and a second channel. The connection between the first and second channels is vertically positioned. The vertically moving one-way valve can block or open the connection between the first and second channels, thus closing or opening the intermediate channel. This arrangement of the intermediate channel improves the closing effect of the one-way valve; that is, the one-way valve can block the connection between the first and second channels, preventing communication between them. Therefore, the one-way valve is more effective at closing the intermediate channel.

[0016] Furthermore, the main body is provided with a vertically extending water inlet channel, which is connected to the first channel. The water inlet channel is also connected to the intermediate channel on the main body.

[0017] Furthermore, the main body is also provided with a third channel extending vertically, with the first channel and the third channel spaced apart. The connector has a water outlet and a fourth channel corresponding to the third channel. The fourth channel and the third channel form the water outlet channel, and the fourth channel is connected to the second channel. This arrangement of the main body and connector divides the water outlet channel into the third channel and the fourth channel, allowing the middle channel to connect with the water outlet channel at the connector.

[0018] Furthermore, the filter cartridge holder also includes a cavity for accommodating the filter cartridge, the opening of which allows the filter cartridge to enter or be removed from the cavity. This design facilitates the installation and removal of the filter cartridge, and the filter cartridge may have an external handle for easy insertion and removal by the user within the cavity.

[0019] Furthermore, the outer peripheral wall of the filter element has at least two circumferentially spaced and extending ribs. The inner peripheral wall of the cavity has multiple grooves corresponding to the number of ribs. Each groove is further divided into a first groove extending axially for axial insertion of the corresponding rib and a second groove extending circumferentially for positioning the corresponding rib. Rotating the filter element can cause each rib to slide from the first groove into the second groove, thus entering the usage state; rotating the filter element can also cause each rib to slide from the second groove into the first groove, thus entering the installation state. This arrangement of the cavity and filter element allows the rotation of the filter element to switch states. When the ribs of the filter element are located in the first groove, the filter element is in the installation state, and the filter element and filter element seat are unlocked, allowing for filter element replacement. When the ribs of the filter element are located in the second groove, the filter element is in the usage state, and the filter element and filter element seat are locked, with the filter element installed in the filter element seat. Therefore, the structures in the filter element assembly of this application can cooperate with each other, resulting in better performance of the filter element assembly.

[0020] Compared with the prior art, the advantages of this utility model are as follows: The filter element assembly utilizes the cooperation of a rotating component and a one-way valve with the filter element to ensure that the filter element assembly has at least two water supply channels in various states. That is, when the filter element is in use, the water flow can sequentially pass through the inlet channel, the first water passage hole, the inlet end, the filter element, the outlet end, the second water passage hole, and the outlet channel before flowing out, allowing the water to flow out after passing through the filter element, thereby increasing the mineral content in the water. When the filter element is disassembled, the rotating component blocks the inlet and outlet channels to prevent water from flowing out of the filter element seat, thereby preventing water leakage from the filter element seat. Furthermore, the one-way valve opens the intermediate channel, allowing the water flow to sequentially pass through the inlet channel, the intermediate channel, and the outlet channel before flowing out, ensuring that the water flow only passes through the filter element seat and not through the filter element, thus ensuring that the drinking water equipment can still be used normally during filter element replacement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Figure 2 This is an exploded view of the filter element and filter element holder in an embodiment of this utility model;

[0023] Figure 3 This is a cross-sectional view of an embodiment of the present utility model (the filter element is in use);

[0024] Figure 4 This is a cross-sectional view of an embodiment of the present invention (the filter element is in a disassembled state);

[0025] Figure 5 This is an exploded view of the one-way valve, rotating component, and filter element in an embodiment of this utility model;

[0026] Figure 6This is an exploded view of the rotating component and filter element in an embodiment of this utility model;

[0027] Figure 7 This is an exploded view of the body, connector, and check valve in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the connector structure in an embodiment of this utility model;

[0029] Figure 9 This is a cross-sectional view of the filter element holder in an embodiment of this utility model;

[0030] Figure 10 This is a cross-sectional view of the filter element and cavity in an embodiment of the present invention (the rib is located in the second groove);

[0031] Figure 11 This is a cross-sectional view of the filter element and cavity in an embodiment of the present invention (the rib is located in the first groove). Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1-11 The figure shown is the preferred embodiment of this utility model.

[0034] The filter element assembly in this embodiment includes a filter element holder 1, a filter element 2, a rotating component 3, and a one-way valve 4. The filter element 2 is detachably connected to the filter element holder 1; that is, the filter element holder 1 includes a cavity 16 for accommodating the filter element 2. The opening of the cavity 16 allows the filter element 2 to enter or be removed from the cavity 16. Figure 1 and Figure 2 As shown. Specifically, the outer peripheral wall of the filter element 2 has two circumferentially spaced and circumferentially extended ribs 24, which are symmetrically arranged. The inner peripheral wall of the cavity 16 has two grooves 161 corresponding to the ribs 24. Each groove 161 is further divided into an axially extending first groove 161a for axial insertion of the corresponding rib 24 and a circumferentially extending second groove 161b for positioning the corresponding rib 24. Figure 9 As shown, rotating the filter element 2 causes each protruding rib 24 to slide from the first groove 161a into the second groove 161b, thereby locking the filter element 2 inside the filter element seat 1, so that the filter element 2 is in the following usage state, such as Figure 10 As shown; rotating the filter element 2 also causes each protruding rib 24 to slide from the second groove 161b into the first groove 161a, thereby unlocking the filter element 2 from the filter element seat 1, so that the filter element 2 is in the following installation state, so as to facilitate the replacement of the filter element 2, such as Figure 11 As shown.

[0035] like Figures 3-6As shown, the filter cartridge holder 1 of this embodiment has a water inlet channel 11, a water outlet channel 12, and an intermediate channel 13 connecting the water inlet channel 11 and the water outlet channel 12. The filter element 2 is provided with a water inlet end 21 and a water outlet end 22. A rotating member 3 is disposed at the connection between the filter cartridge holder 1 and the filter element 2. The rotating member 3 can rotate relative to the filter cartridge holder 1 along its own axial direction. The rotating member 3 is provided with a first mounting cavity 31 for inserting the water inlet end 21 and a second mounting cavity 32 for inserting the water outlet end 22. The first mounting cavity 31... The filter element 2 has a first water passage hole 311 on its wall surface that corresponds to the water inlet channel 11, and a second water passage hole 321 on its wall surface that corresponds to the water outlet channel 12. The outer peripheral walls of the inlet end 21 and the outlet end 22 of the filter element 2 are respectively provided with sealing rings 23 that cooperate with the inner peripheral walls of the first and second mounting cavities 31 and 32, respectively, so that the inlet end 21 of the filter element 2 is sealed to the first mounting cavity 31, and the outlet end 22 is sealed to the second mounting cavity 32. Furthermore, in this embodiment, a one-way valve 4 is installed inside the filter element seat 1, and the one-way valve 4 can cooperate with the filter element 2 to close or open the intermediate channel 13. In this embodiment, the filter element 2 utilizes the rotating component 3 and the one-way valve 4 to have at least three states. When the filter element 2 is in the installation state where the inlet end 21 is inserted into the first mounting cavity 31 and the outlet end 22 is inserted into the second mounting cavity 32, the filter element 2 can drive the one-way valve 4 to close, thus blocking the intermediate channel 13. At this time, the first water passage 311 is offset from the inlet channel 11, and the second water passage 321 is offset from the outlet channel 12, preventing water from flowing out of the filter element seat 1, thereby preventing leakage of the filter element seat 1. When the filter element 2, in the above installation state, drives the rotating component 3 to rotate relative to the filter element seat 1 to the use state, the first water passage 311 is connected to the inlet channel 11, and the second... The water passage 321 is connected to the water outlet channel 12, allowing water to flow out sequentially through the water inlet channel 11, the first water passage 311, the water inlet end 21, the filter element 2, the water outlet end 22, the second water passage 321, and the water outlet channel 22. This allows the water to flow out after passing through the filter element 2, thereby increasing the mineral content in the water. When the filter element 2 is removed from the filter element seat 1 from the above-mentioned installed state and is in the disassembled state, the one-way valve 4 opens the intermediate channel 13, allowing water to flow out sequentially through the water inlet channel 11, the intermediate channel 13, and the water outlet channel 12. This ensures that the water flows only through the filter element seat 1 and not through the filter element 2, thus guaranteeing that the drinking water equipment can still be used normally during the replacement of the filter element 2.

[0036] like Figures 3-5As shown, the one-way valve 4 in this embodiment includes a valve stem 41, a valve core 42, and a spring 43. A through hole 33 is provided at the center of the rotating member 3, through which the lower end of the valve stem 41 can pass and protrude from the rotating member 3. The upper end of the valve stem 41 is connected to the valve core 42. The spring 43 is always in a compressed state. One end of the spring 43 abuts against the valve stem 41, and the other end abuts against the periphery of the second channel 151 of the connector 15 described below. The spring 43 causes the valve stem 41 and valve core 42 to move downwards, thereby opening the one-way valve 4. The filter element 2 tends to keep the intermediate channel 13 open. When the filter element 2 is in the above-mentioned installation state, the upper surface of the filter element 2 between the inlet end 21 and the outlet end 22 abuts against the lower end of the valve stem 41, causing the valve stem 41 and the valve core 42 to move upward to block the intermediate channel 13. That is, the filter element 2 drives the one-way valve 4 to close the intermediate channel 13. Therefore, the one-way valve 4 can cooperate with the filter element 2. That is, the installation and removal of the filter element 2 can control the one-way valve 4 to close or open the intermediate channel 13, so that the filter element assembly switches the water path.

[0037] In addition, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the filter cartridge holder 1 in this embodiment includes a body 14 and a connector 15 disposed on the body 14. The body 14 has a first channel 141, a water inlet channel 11, and a third channel 142 extending vertically at its center. The water inlet channel 11 communicates with the first channel 141, and the first channel 141 and the third channel 142 are spaced apart. A one-way valve 4 is installed in the first channel 141. The connector 15 has a second channel 151 corresponding to the first channel 141. The first channel 141 and the second channel 151 form an intermediate channel 13. The one-way valve 4 can block the connection between the first channel 141 and the second channel 151. Furthermore, the connector 15 in this embodiment also has a water outlet 152 and a fourth channel 153 corresponding to the third channel 142. The fourth channel 153 and the third channel 142 form a water outlet channel 12, and the fourth channel 153 communicates with the second channel 151. This arrangement of the body 14 and connector 15 not only facilitates manufacturing but also facilitates assembly to form the water inlet channel 11, the water outlet channel 12, and the intermediate channel 13.

[0038] The workflow of this embodiment is as follows:

[0039] A. When the filter element 2 is located outside the filter element holder 1 and needs to be installed into the filter element holder 1, first insert the filter element 2 into the cavity 16 of the filter element holder 1 until the two protruding ribs 24 of the filter element 2 are respectively inserted into the corresponding first grooves 161a, such as... Figure 11As shown, the inlet end 21 of the filter element 2 is inserted into the first mounting cavity 31 of the rotating member 3, and the outlet end 22 is inserted into the second mounting cavity 32 of the rotating member 3. At this time, the filter element 2 is in the installation state, the first water passage 311 is offset from the water inlet channel 11, and the second water passage 321 is offset from the water outlet channel 12. In the above installation state, the upper surface of the filter element 2 between the inlet end 21 and the outlet end 22 abuts against the lower end of the valve stem 41, causing the valve stem 41 and the valve core 42 to move upward, so that the valve core 42 blocks the connection between the first channel 141 and the second channel 151, thereby closing the intermediate channel 13. Then, in the above installation state, the filter element 2 drives the rotating member 3 to rotate relative to the filter element seat 1 to the use state. The two protruding ribs 24 of the filter element 2 slide from the first groove 161a into the second groove 161b, so that the filter element 2 is locked in the filter element seat 1. Figure 10 As shown, the first water passage 311 of the rotating component 3 is connected to the water inlet channel 11, and the second water passage 321 is connected to the water outlet channel 12, so that the water flows out after passing through the water inlet channel 11, the first water passage 311, the water inlet end 21, the filter element 2, the water outlet end 22, the second water passage 321, and the water outlet channel 12 in sequence. Figure 3 As shown;

[0040] B. When filter element 2 needs to be removed from filter element holder 1 for replacement, first rotate filter element 2 so that the two protruding ribs 24 of filter element 2 slide from the second groove 161b into the first groove 161a, thereby unlocking filter element 2 from filter element holder 1. Figure 11 As shown; the rotation of filter element 2 will simultaneously drive the rotating part 3 to rotate, causing the first water passage hole 311 of the rotating part 3 to be misaligned with the water inlet channel 11 and the second water passage hole 321 to be misaligned with the water outlet channel 12, so that the filter element seat 1 will not leak when replacing filter element 2, thus putting filter element 2 in the installed state; then the filter element 2 is pulled out, so that filter element 2 is detached from the filter element seat 1 from the above-mentioned installed state and put in the disassembled state, so that filter element 2 is removed from the cavity 16 of filter element seat 1 for replacement, and the one-way valve 4 opens the intermediate channel 13, so that the water flows through the water inlet channel 11, the intermediate channel 13 and the water outlet channel 12 in sequence before flowing out, so that the water flows only through the filter element seat 1 and not through the filter element 2, thus ensuring that the drinking water equipment can still be used normally during the replacement of filter element 2, such as Figure 4 As shown.

Claims

1. A filter element assembly, comprising a filter element holder (1) and a filter element (2) detachably connected to the filter element holder (1), wherein the filter element holder (1) has a water inlet channel (11) and a water outlet channel (12), and the filter element (2) has a water inlet end (21) and a water outlet end (22), characterized in that: Also includes A rotating component (3) is provided at the connection between the filter element seat (1) and the filter element (2). The rotating component (3) is provided with a first mounting cavity (31) for the water inlet end (21) to be inserted and a second mounting cavity (32) for the water outlet end (22) to be inserted. The wall of the first mounting cavity (31) is provided with a first water passage hole (311) that corresponds to the water inlet channel (11). The wall of the second mounting cavity (32) is provided with a second water passage hole (321) that corresponds to the water outlet channel (12). A one-way valve (4) is installed in the filter element seat (1) and can cooperate with the filter element (2) to close or open the intermediate channel (13), which connects the water inlet channel (11) and the water outlet channel (12); When the filter element (2) is installed with its inlet end (21) inserted into the first mounting cavity (31) and its outlet end (22) inserted into the second mounting cavity (32), the filter element (2) can drive the one-way valve (4) to close and block the intermediate channel (13). At this time, the first water passage (311) is offset from the water inlet channel (11) and the second water passage (321) is offset from the water outlet channel (12). When the filter element (2) drives the rotating part (3) to rotate relative to the filter element seat (1) to the use state in the above installation state, the first water passage (311) is connected to the water inlet channel (11) and the second water passage (321) is connected to the water outlet channel (12); When the filter element (2) is removed from the filter element seat (1) from the above-mentioned installation state and is in the disassembled state, the one-way valve (4) opens the intermediate channel (13).

2. The filter element assembly according to claim 1, characterized in that: The outer peripheral wall of the water inlet end (21) and the outer peripheral wall of the water outlet end (22) of the filter element (2) are respectively provided with sealing rings (23) that can cooperate with the inner peripheral walls of the first mounting cavity (31) and the second mounting cavity (32).

3. The filter element assembly according to claim 1, characterized in that: The one-way valve (4) includes a valve stem (41) and a valve core (42). The center of the rotating part (3) is provided with a through hole (33). The lower end of the valve stem (41) can pass through the through hole (33) and protrude from the rotating part (3). The upper end of the valve stem (41) is connected to the valve core (42). The filter element (2) is in the above-mentioned installation state. The upper surface of the filter element (2) between the water inlet end (21) and the water outlet end (22) abuts against the lower end of the valve stem (41), so that the valve stem (41) and the valve core (42) move upward to block the middle channel (13).

4. The filter element assembly according to claim 3, characterized in that: The one-way valve (4) also includes a spring (43) that is always in a compressed state. One end of the spring (43) abuts against the valve stem (41) and the other end abuts against the intermediate channel (13). The valve stem (41) and the valve core (42) have a tendency to move downward so that the one-way valve (4) has a tendency to keep the intermediate channel (13) open.

5. The filter element assembly according to claim 1, characterized in that: The filter element holder (1) includes a body (14) and a connector (15) disposed on the body (14). The body (14) has a first channel (141) extending vertically in the center. The one-way valve (4) is installed in the first channel (141). The connector (15) has a second channel (151) corresponding to the first channel (141). The first channel (141) and the second channel (151) form the intermediate channel (13). The one-way valve (4) can block the connection between the first channel (141) and the second channel (151).

6. The filter element assembly according to claim 5, characterized in that: The main body (14) is provided with a water inlet channel (11) extending vertically, and the water inlet channel (11) is connected to the first channel (141).

7. The filter element assembly according to claim 5, characterized in that: The main body (14) is also provided with a third channel (142) extending vertically. The first channel (141) and the third channel (142) are spaced apart. The connector (15) has a water outlet (152) and a fourth channel (153) corresponding to the third channel (142). The fourth channel (153) and the third channel (142) form the water outlet channel (12). The fourth channel (153) is connected to the second channel (151).

8. The filter element assembly according to any one of claims 1 to 7, characterized in that: The filter element holder (1) also includes a cavity (16) for accommodating the filter element (2), the opening of which allows the filter element (2) to enter into or be removed from the cavity (16).

9. The filter element assembly according to claim 8, characterized in that: The outer peripheral wall of the filter element (2) has at least two circumferentially spaced and circumferentially extended ribs (24). The inner peripheral wall of the cavity (16) is provided with a plurality of grooves (161) corresponding to the number of ribs (24). Each groove (161) is further divided into an axially extending first groove (161a) for axial insertion of the corresponding rib (24) and a circumferentially extending second groove (161b) for positioning the corresponding rib (24). Rotating the filter element (2) can drive each rib (24) to slide from the first groove (161a) into the second groove (161b) and be in the use state. Rotating the filter element (2) can also drive each rib (24) to slide from the second groove (161b) into the first groove (161a) and be in the installation state.

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