Water locking structure of filter element

Abstract

The water locking mechanism of the filter core comprises a filter core, a center pipe arranged in the center of the filter core, a water outlet arranged at the outer end of the center pipe, and a filter core water locking mechanism fixed at the water outlet; a filter core seat, a filter core water circuit board fixed at the top of the filter core seat, a filter core adapter plate arranged at the bottom of the filter core seat, an installation cavity arranged between the filter core water circuit board and the filter core adapter plate, and a filter core seat water locking mechanism fixed in the installation cavity; characterized in that a sealing connection mechanism is arranged between the filter core water locking mechanism and the filter core seat water locking mechanism, which comprises an insertion port arranged at the top of the filter core, the insertion port being communicated with the center pipe through the filter core water locking mechanism, an insertion pipe arranged at the bottom of the filter core adapter plate, the insertion pipe being communicated with the filter core water circuit board through the filter core seat water locking mechanism, the insertion port and the insertion pipe being sealingly connected, and the filter core water locking mechanism and the filter core seat water locking mechanism being in valve core abutting cooperation to realize synchronous opening or closing of the filter core water locking mechanism and the filter core seat water locking mechanism, so that the structure of the water locking mechanism is simpler, the filter core can be replaced when there is no water and no power, the cost is lower, and the user operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of water purification filter cartridges, and in particular to a water-locking structure for a filter cartridge. Background Technology

[0002] Water purifier filters typically contain KDF and activated carbon. The filter's purpose is to purify polluted water to a state suitable for production and daily life, achieving a certain level of cleanliness. It removes solid particles, kills bacteria, and filters out harmful chemicals. The filter is permanently fixed in the filter compartment and needs replacement when it reaches the end of its lifespan. After removal, reinstallation, and locking, common water-locking mechanisms on the market often require users to disconnect the water and power before replacement, increasing inconvenience. There is a need for a water-locking mechanism that allows users to easily replace the filter without interrupting water and power, with a simpler structure and to prevent excessive leakage.

[0003] A search revealed that patent number CN202121375442.6 discloses a water-locking structure for a water purifier filter cartridge. The filter cartridge includes a filter cartridge seat, a filter assembly, and a filter cartridge sleeve. A connecting block is fixedly connected to the filter cartridge seat. The water-locking structure includes a first water-locking structure and a second water-locking structure. The first water-locking structure includes a sleeve and a first connecting rod. A first blocking block adapted to the sleeve and a first rubber ring adapted to the first blocking block are provided parallel to the top of the first connecting rod. A first through channel is provided on the first connecting rod. At least one hydrophobic channel is provided on the inner wall of the sleeve. The second water-locking structure includes a sliding sleeve and a second connecting rod. A second rubber ring is provided on the second connecting rod located at the bottom of the sliding sleeve. A second through channel is provided on the second connecting rod. The combination of these two dynamic water-locking structures (first and second) ensures reliable water locking, a significant water-locking effect, and ease of use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a water-locking structure for a filter element. The structure of the water-stopping mechanism is simpler, and it can be replaced without interrupting water and electricity supply, resulting in lower costs and convenient operation for users.

[0005] The technical solution of this utility model is: a water-locking mechanism for a filter element, comprising: a filter element, a central tube provided at the center of the filter element, a water outlet provided at the outer end of the central tube, and a filter element water-stopping mechanism fixed at the water outlet;

[0006] A filter element holder has a filter element water passage plate fixed at the top and a filter element adapter plate at the bottom. An installation cavity is provided between the filter element water passage plate and the filter element adapter plate, and a filter element holder water-stopping mechanism is fixed in the installation cavity.

[0007] Its characteristic is that a sealing connection mechanism is provided between the filter element water-stopping mechanism and the filter element seat water-stopping mechanism, which includes:

[0008] An insertion port is located at the top of the filter element; it is connected to the central tube through the filter element's water-stopping mechanism.

[0009] An insertion tube is located at the bottom of the filter element adapter plate; it is connected to the filter element water circuit plate through the filter element seat water-stopping mechanism.

[0010] The insertion port and the insertion tube are sealed together. Furthermore, there is a valve core contact mechanism between the filter element water-stopping mechanism and the filter element seat water-stopping mechanism to achieve simultaneous opening or closing of the filter element water-stopping mechanism and the filter element seat water-stopping mechanism.

[0011] Furthermore, the sealing connection is provided with an annular waterproof groove on the inner wall of the insertion port, and a waterproof sealing ring is fixed in the waterproof groove, which is placed between the inner wall of the insertion port and the outer wall of the insertion tube.

[0012] Furthermore, the filter element water stop valve mechanism includes a filter element water stop valve core seat disposed in the central hole of the filter element bottom cover, and a filter element water stop valve core is movably fixed on the filter element water stop valve core seat. An outward thrust is applied between the filter element water stop valve core seat and the filter element water stop valve core through an elastic element to achieve automatic pop-out sealing and waterproofing.

[0013] Furthermore, the filter element stop valve core seat is fixed to the inner wall of the central hole by a sealing element, and the rear circumferential groove of the filter element stop valve core is inlaid with a sealing ring. Correspondingly, the rear part of the filter element stop valve core seat has a frustoconical hole to achieve a sealing fit.

[0014] Furthermore, the filter element seat water-stopping mechanism includes a filter element seat water-stopping valve seat disposed on the filter element seat. The filter element seat water-stopping valve seat has an installation cavity communicating with the insertion tube. A filter element seat water-stopping valve core is disposed in the installation cavity. An elastic element is provided between the filter element seat water-stopping valve core and the installation cavity to apply an outward thrust, thereby achieving automatic pop-out sealing and waterproofing.

[0015] Furthermore, the outer wall of the filter element seat water stop valve core is provided with a sealing groove, and a sealing ring is fixed in the corresponding sealing groove. The frustum-shaped hole on the filter element seat water stop valve seat cooperates to achieve sealing and waterproofing.

[0016] Finally, the elastic element is preferably a return spring.

[0017] Compared with existing technologies, the advantages of this product are as follows: a sealing connection mechanism is provided at the connection between the filter element water-stopping mechanism and the filter element seat water-stopping mechanism, which increases the sealing length of the sealing connection mechanism, and allows the filter element water-stopping mechanism and the filter element seat water-stopping mechanism to perform sealing and water-locking work in advance, reducing the water output, helping users to replace the filter element without interrupting water and power supply, and the structure is simple, easy to operate, and lower in cost. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view showing the working state of this utility model.

[0019] Figure 2 This is a cross-sectional view of the present invention in the core-changing state.

[0020] Figure 3 This is a three-dimensional sectional view of the present invention in the core-changing state.

[0021] 1. Filter element, 2. Filter element seat, 3. Central tube, 4. Outlet, 5. Filter element water-stopping mechanism, 6. Filter element water circuit board, 7. Filter element adapter plate, 8. Mounting cavity, 9. Filter element seat water-stopping mechanism, 10. Sealing connection mechanism, 11. Insertion port, 12. Insertion tube, 13. Sealing groove, 14. Filter element seat water-stopping valve core, 15. Filter element water-stopping valve core seat, 16. Filter element water-stopping valve core, 17. Elastic element, 18. Sealing ring, 19. Waterproof groove, 20. Waterproof sealing ring, 21. Filter element seat water-stopping valve seat. Detailed Implementation

[0022] The embodiments of this utility model patent will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model patent, but should not be construed as limiting its scope. In the description of this utility model patent, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model patent. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention patent based on the specific circumstances.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 3A water-locking mechanism for a filter element includes: a filter element 1 and a filter element seat 2. The filter element 1 has a central tube 3 at its center, and an outlet 4 at the outer end of the central tube 3. A filter element water-stopping mechanism 5 is fixed at the outlet 4. A filter element water channel plate 6 is fixed to the top of the filter element seat 2, and a filter element adapter plate 7 is provided at the bottom of the filter element seat 2. An installation cavity 8 is provided between the filter element water channel plate 6 and the filter element adapter plate 7, and a filter element seat water-stopping mechanism 9 is fixed in the installation cavity 8. The key improvement lies in the sealing connection mechanism 10 between the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9, increasing the sealing length of the sealing connection mechanism 10, allowing the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9 to perform sealing and water-locking work earlier, reducing the water output. An insertion port 11 is located at the top of the filter element 1 and is connected to the central tube 3 through the filter element water-stopping mechanism 5. An insertion tube 12 is located at the bottom of the filter element adapter plate 7 and is connected to the filter element water channel plate 6 through the filter element seat water-stopping mechanism 9. An annular waterproof groove 19 is provided on the inner wall of the insertion port 11. A waterproof sealing ring 20 is fixed in the waterproof groove 19 and is placed between the inner wall of the insertion port 11 and the outer wall of the insertion tube 12 to achieve a sealed connection. Moreover, there is a valve core abutting cooperation between the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9 to achieve synchronous opening of the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9, or synchronous closing of the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9.

[0026] The filter element water-stopping mechanism 5 includes a filter element water-stopping valve core seat 15 disposed in the central hole of the filter element bottom cover. A filter element water-stopping valve core 16 is movably fixed on the filter element water-stopping valve core seat 15. An outward thrust is applied between the filter element water-stopping valve core seat 15 and the filter element water-stopping valve core 16 through an elastic element 17 to achieve automatic pop-out sealing and waterproofing. Usually, the filter element water-stopping valve core seat 15 is fixed to the inner wall of the central hole by a sealing element, while the filter element water-stopping valve core 16 has a circumferential groove at the rear to embed a sealing ring. Correspondingly, the rear of the filter element water-stopping valve core seat 15 has a frustoconical hole to achieve a sealing fit. The filter element seat water-stopping mechanism 9 includes a filter element seat water-stopping valve seat 21 disposed on the filter element seat. The filter element seat water-stopping valve seat 21 has an installation cavity 8 communicating with the insertion tube 12. A filter element seat water-stopping valve core 14 is disposed within the installation cavity 8. An elastic element 17 is provided between the filter element seat water-stopping valve core 14 and the installation cavity 8, applying an outward thrust to achieve automatic ejection and sealing for waterproofing. The elastic element 17 is preferably a return spring. Sealing grooves 18 are provided on the outer walls of the filter element water-stopping valve core 16 and the filter element seat water-stopping valve core 14. Sealing rings 18 are fixed in the corresponding sealing grooves 13, engaging with the frustoconical holes on their respective valve seats to achieve sealing and waterproofing.

[0027] When the user uses this product, in the working state, the filter element 1 is installed on the filter element seat 2. Due to the valve core abutment between the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9, the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9 are opened simultaneously. The elastic element 17 applies an outward thrust to the filter element water-stopping valve core 16 and the filter element seat water-stopping valve core 14 in the mounting cavity 8 of the filter element seat water-stopping valve seat 21 and the filter element water-stopping valve core seat 15, respectively, thereby pushing the filter element water-stopping valve core 16 and the filter element seat water-stopping valve core 14 from their respective filter element water-stopping valve core seats. 15 and the filter element seat water stop valve core seat 21 are pushed open, so that water flows through the central pipe 3 in the middle of the filter element 1, and then enters the filter element water circuit plate 6 through the filter element seat 2 and the filter element adapter plate 7; in the filter element replacement state, when the filter element 1 is pulled out from the filter element seat 2, there is no valve core contact between the filter element water stop mechanism 5 and the filter element seat water stop mechanism 9, and the filter element water stop mechanism 5 and the filter element seat water stop mechanism 9 can be closed simultaneously, so that the filter element water stop valve core 16 and the filter element seat water stop valve core 14 block the water outlet 4 and the insertion pipe 12, thereby preventing water leakage during the filter element replacement process.

[0028] A sealing connection mechanism 10 is provided between the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9. This increases the sealing length of the sealing connection mechanism 10, allowing the filter element water-stopping mechanism 5 and the filter element seat water-stopping mechanism 9 to perform sealing and water-locking work in advance, reducing the water output. This helps users replace the filter element without interrupting water or electricity. Furthermore, the structure is simple, the operation is convenient, and the cost is lower.

Claims

1. A water-locking structure for a filter element, comprising: A filter element with a central tube at its center and an outlet at the outer end of the central tube, and a filter element water-stopping mechanism fixed at the outlet. A filter element holder has a filter element water passage plate fixed at the top and a filter element adapter plate at the bottom. An installation cavity is provided between the filter element water passage plate and the filter element adapter plate, and a filter element holder water-stopping mechanism is fixed in the installation cavity. Its features A sealing connection mechanism is provided between the filter element water-stopping mechanism and the filter element seat water-stopping mechanism, which includes: An insertion port is located at the top of the filter element; it is connected to the central tube through the filter element's water-stopping mechanism. An insertion tube is located at the bottom of the filter element adapter plate; it is connected to the filter element water circuit plate through the filter element seat water-stopping mechanism. The insertion port and the insertion tube are sealed together. Furthermore, there is a valve core contact mechanism between the filter element water-stopping mechanism and the filter element seat water-stopping mechanism to achieve simultaneous opening or closing of the filter element water-stopping mechanism and the filter element seat water-stopping mechanism.

2. The water-locking structure of a filter element according to claim 1, characterized in that... The sealing connection is provided with an annular waterproof groove on the inner wall of the insertion port, and a waterproof sealing ring is fixed in the waterproof groove, which is placed between the inner wall of the insertion port and the outer wall of the insertion tube.

3. The water-locking structure of a filter element according to claim 1, characterized in that... The filter element water stop valve mechanism includes a filter element water stop valve core seat set in the center hole of the filter element bottom cover, and a filter element water stop valve core is movably fixed on the filter element water stop valve core seat. An outward thrust is applied between the filter element water stop valve core seat and the filter element water stop valve core through an elastic element to achieve automatic pop-out sealing and waterproofing.

4. The water-locking structure of a filter element according to claim 3, characterized in that... The filter element stop valve core seat is fixed to the inner wall of the central hole by a sealing element, and the rear circumferential groove of the filter element stop valve core is inlaid with a sealing ring. Correspondingly, the rear part of the filter element stop valve core seat has a frustoconical hole to achieve a sealing fit.

5. The water-locking structure of a filter element according to claim 1, characterized in that... The filter element seat water-stopping mechanism includes a filter element seat water-stopping valve seat disposed on the filter element seat. The filter element seat water-stopping valve seat has an installation cavity communicating with the insertion tube. A filter element seat water-stopping valve core is disposed in the installation cavity. An elastic element is provided between the filter element seat water-stopping valve core and the installation cavity to apply an outward thrust, thereby achieving automatic pop-out sealing and waterproofing.

6. The water-locking structure of a filter element according to claim 5, characterized in that... The outer wall of the filter element seat water stop valve core is provided with a sealing groove, and a sealing ring is fixed in the corresponding sealing groove. It cooperates with the frustoconical hole on the filter element seat water stop valve seat to achieve sealing and waterproofing.

7. The water-locking structure of a filter element according to any one of claims 3 to 6, characterized in that... The elastic element is preferably a return spring.

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