Filter element and water purifier

Abstract

The utility model discloses a filter core, including filter shell, top cap and protective cover, top cap is fused in the open end of filter shell, the protective cover is set up on top cap, the protective cover is used for preventing top cap is opened when the water pressure in filter shell increases, be equipped with mounting structure on the protective cover, mounting structure can make the protective cover detachable assembly on water purifier. The utility model discloses a water purifier including above -mentioned filter core. Through the setting of protective cover, can to top cap play certain protection effect, prevent filter shell in the water pressure increase when top cap is opened, and then effectively solve the water leakage problem caused when the water pressure in filter shell increases, improved water purifier's use safety and user use experience.

Description

Technical Field

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

[0002] A water purifier is a water treatment device that performs deep filtration and purification of water according to usage requirements. With increasingly stringent water quality standards, the water purification industry has developed rapidly. Water purifiers use filter cartridges for deep filtration and purification. When a water purifier is installed and connected to a water source, or after replacing a filter cartridge, or when the water pressure increases, or in any other situation that increases the water pressure in the purifier's internal piping, the water pressure inside the filter cartridge will also increase. This increased water pressure can easily cause the top cover of the filter cartridge to be forced open, leading to filter leakage. This affects the safety of the water purifier and the user experience. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model proposes a filter element to solve the problem of water leakage caused by increased water pressure inside the filter element.

[0004] This utility model is achieved through the following technical solution: a filter element, including a filter shell, a top cover and a protective cover, wherein the top cover is fused to the open end of the filter shell, and the protective cover is sleeved on the top cover. The protective cover is used to prevent the top cover from being pushed open when the water pressure inside the filter shell increases. The protective cover is provided with an installation structure, which enables the protective cover to be detachably assembled onto a water purifier.

[0005] As a further improved technical solution, the installation structure includes a locking block and a limiting block. The locking block extends circumferentially along the protective cover, and the limiting block extends from one end of the locking block away from the filter shell.

[0006] As a further improved technical solution, the mounting structure is a plurality of structures, which are arranged circumferentially along the protective cover.

[0007] As a further improved technical solution, the top of the protective cover is provided with a first hand-held block.

[0008] As a further improved technical solution, the top of the protective cover is provided with a recess, the first hand-held block is disposed in the recess, and the end of the first hand-held block away from the recess does not extend beyond the top of the protective cover.

[0009] As a further improved technical solution, the first hand-held block is provided with a cavity, and a cover plate is detachably mounted on the end of the cavity away from the top cover. The end of the cavity near the top cover is provided with a through hole that communicates with it axially. The top cover is provided with a fixing hole, and the through hole corresponds to the fixing hole.

[0010] As a further improved technical solution, the top cover is provided with a first protrusion around its outer periphery, the first protrusion is mounted on the open end of the filter shell, the protective cover is sleeved on the outer periphery of the top cover, and the protective cover is also mounted on the open end of the filter shell.

[0011] As a further improved technical solution, a second hand-held block is provided on the top cover, and the second hand-held block is away from the filter shell.

[0012] As a further improved technical solution, the filter housing is provided with anti-foolproof protrusions on its outer periphery.

[0013] This utility model also provides a water purifier, including the above-mentioned filter element, to improve the safety of the water purifier and the user experience.

[0014] Compared with the prior art, the filter element provided by this utility model can protect the top cover by setting a protective cover, preventing the top cover from being pushed open when the water pressure inside the filter housing increases. This effectively solves the problem of water leakage caused by increased water pressure inside the filter housing, and improves the safety of the water purifier and the user experience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the filter element in this utility model.

[0016] Figure 2 yes Figure 1 Exploded view.

[0017] Figure 3 yes Figure 1 A sectional view.

[0018] Figure 4 yes Figure 3 A magnified view of part A in the image.

[0019] Figure 5 This is a schematic diagram of the top cover structure in this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the protective cover in this utility model.

[0021] Figure label: Filter element 100; Filter housing 10, open end 11, closed end 12, connecting pipe 13, second protrusion 14, foolproof protrusion 15; End cap 20; Top cover 30, cavity 31, step 32, first boss 33, second hand block 34, fixing hole 35; Protective cover 40, locking block 41, limiting block 42, first hand-held block 43, recess 44, cavity 45, cover plate 46, perforation 47. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 6 As shown, this utility model provides a filter element 100, including a filter housing 10. One end of the filter housing 10 is an open end 11, and the other end is a closed end 12. The closed end 12 is provided with a connector 13. The connector 13 is generally two or three. When the filter element 100 is an RO membrane filter element, the connector 13 is respectively an inlet connector, an outlet connector, and a wastewater connector. When the filter element 100 is another filter element, the connector 13 is respectively an inlet connector and an outlet connector. The connector 13 is connected to the inside of the filter housing 10. The filter housing 10 contains a filter membrane assembly. The filter membrane assembly includes a central tube, a filter membrane element sleeved on the central tube, and end caps 20 assembled at the upper and lower ends of the central tube. The end cap 20 at the lower end of the central tube is snapped into the filter housing 10 and close to the closed end 12. The end cap 20 at the upper end of the central tube is close to the open end 11. The open end 11 is fused with a top cover 30. The end cap 20 at the upper end of the central tube abuts against the top cover 30.

[0025] The attached diagram shows an RO membrane filter cartridge, but the central tube and filter membrane element are not shown. Water flows into the filter housing 10 through the inlet pipe and is purified and filtered by the filter membrane element before flowing out through the outlet pipe. Wastewater flows out through the wastewater pipe. The filter housing 10, filter membrane assembly, and top cover 30 are all the same as existing technologies, and the assembly of the pipe 13 with the water purifier is also the same as existing technologies. That is, the flow of inlet water, purified water, and wastewater is also the same as existing technologies, and will not be described in detail here.

[0026] The top cover 30 has an upwardly recessed cavity 31 at its lower end, which is used to accommodate the end cap 20 at the upper end of the central tube. In this example, the end cap 20 at the upper end of the central tube abuts against the bottom wall and even the side wall of the cavity 31.

[0027] The filter housing 10 has a second protrusion 14 on its inner peripheral wall and a step 32 on its outer peripheral wall, the step 32 abutting against the second protrusion 14.

[0028] The top cover 30 has a first protrusion 33 around its outer periphery. The first protrusion 33 is mounted on the open end 11 of the filter shell 10, and the top cover 30 is fused to the filter shell 10.

[0029] The top cover 30 is provided with a second hand-held block 34, which is away from the filter housing 10. The outer peripheral wall of the filter housing 10 is provided with a foolproof protrusion 15, which extends in the same direction as the axis of the filter housing 10. When the filter housing 10 and the top cover 30 are inserted into the receiving cavity of the water purifier, the peripheral wall of the receiving cavity is also provided with a groove that is approximately L-shaped and connected to it. The foolproof protrusion 15 is inserted along the groove. When the foolproof protrusion 15 is inserted to the bottom of the groove, the user holds the second hand-held block 34 and rotates the filter housing 10 and the top cover 30 to make the foolproof protrusion 15 lock in the groove, so that the filter housing 10 and the top cover 30 are assembled in the water purifier. Of course, the above installation method is the same as the prior art, and will not be described in detail here.

[0030] In this embodiment, a protective cover 40 is also fitted on the outer periphery of the top cover 30. One end of the protective cover 40 is fitted outside the top cover 30 and abuts against the open end 11. The outer periphery of the protective cover 40 is provided with an installation structure, and the accommodating cavity is provided with a mating structure adapted to the installation structure. The protective cover 40 is detachably assembled onto the water purifier through the cooperation of the installation structure and the mating structure.

[0031] Specifically, the installation structure includes a locking block 41 and a limiting block 42. The locking block 41 extends circumferentially along the protective cover 40, and the limiting block 42 extends from one end of the locking block 41 away from the filter housing 10, making the installation structure roughly L-shaped. Several of these installation structures are arranged circumferentially along the protective cover 40. Correspondingly, the mating structure is a protrusion, which protrudes from the inner circumferential wall of the receiving cavity and corresponds one-to-one with the installation structure. Of course, the installation structure and mating structure can also be other structures, such as using the engagement between a snap-fit ​​and a slot to achieve detachable assembly between the protective cover 40 and the water purifier, as long as detachable assembly between the protective cover 40 and the water purifier can be achieved.

[0032] The top of the protective cover 40 is provided with a first hand-held block 43, which allows the user to easily rotate the protective cover 40. When installing the protective cover 40, the user inserts the protective cover 40 into the receiving cavity by holding the first hand-held block 43 until the protective cover 40 abuts against the open end 11. Then, the user rotates the first hand-held block 43 to rotate the protective cover 40. Since the protrusion is fixed, the locking block 41 rotates. The locking block 41 and the protrusion abut against each other in the axial direction of the protective cover 40 until the protective cover 40 rotates until the protrusion abuts against the limiting block 42, thereby achieving the locking assembly of the protective cover 40 and the water purifier. When the user rotates the protective cover 40 in the opposite direction to disengage the protrusion from the locking block 41 and the limiting block 42, the user can pull out the protective cover 40 along the axial direction of the protective cover 40, thereby unlocking and disassembling the protective cover 40 from the water purifier.

[0033] The top of the protective cover 40 is provided with a recess 44, and the first hand-held block 43 is provided in the recess 44, and the end of the first hand-held block 43 away from the recess 44 does not extend beyond the top of the protective cover 40.

[0034] In this embodiment, there is no connecting structure between the protective cover 40 and the top cover 30. The top cover 30 abuts against the protective cover 40, and the protective cover 40 provides some support for the top cover 30. When the water pressure inside the filter housing 10 increases, the protective cover 40 can prevent the top cover 30 from being pushed open, effectively solving the water leakage problem caused by increased water pressure inside the filter housing 10, and improving the safety of the water purifier and the user experience. When the filter element 100 needs to be replaced, first rotate and remove the protective cover 40, then insert the replacement filter housing 10, top cover 30, and other components, and then reinstall the protective cover 40.

[0035] In another embodiment, the first hand-held block 43 has a cavity 45, and a cover plate 46 is detachably mounted on the end of the cavity 45 away from the top cover 30. The end of the cavity 45 near the top cover 30 has a through hole 47 that communicates with it axially. The second hand-held block 34 has a fixing hole 35, and the through hole 47 corresponds to the fixing hole 35. A screw passes through the through hole 47 and is fixedly connected to the fixing hole 35 to realize the fixed connection between the protective cover 40 and the top cover 30. The installation structure described above is preferred. By rotating the first hand-held block 43, the protective cover 40, filter shell 10 and top cover 30 can be disassembled and installed from the water purifier at the same time, which facilitates the overall disassembly and assembly of the filter element 100.

[0036] This utility model also provides a water purifier, including the above-mentioned filter element 100, to improve the safety of the water purifier and the user experience.

[0037] This utility model has been described through several specific embodiments. Those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or circumstances without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

Claims

1. A filter element, comprising a filter housing and a top cover, wherein the top cover is fused to the open end of the filter housing, characterized in that, It also includes a protective cover, which is fitted onto the top cover. The protective cover is used to prevent the top cover from being pushed open when the water pressure inside the filter housing increases. The protective cover is provided with an installation structure, which allows the protective cover to be detachably mounted on the water purifier.

2. The filter element as described in claim 1, characterized in that, The mounting structure includes a locking block and a limiting block. The locking block extends circumferentially along the protective cover, and the limiting block extends from one end of the locking block away from the filter housing.

3. The filter element as described in claim 2, characterized in that, The mounting structure comprises several structures arranged circumferentially along the protective cover.

4. The filter element as described in claim 1, characterized in that, The top of the protective cover is provided with a first hand-held block.

5. The filter element as described in claim 4, characterized in that, The top of the protective cover has a recess, the first hand-held block is located in the recess, and the end of the first hand-held block away from the recess does not extend beyond the top of the protective cover.

6. The filter element as described in claim 4, characterized in that, The first hand-held block has a cavity, and a cover plate is detachably mounted on the end of the cavity away from the top cover. The cavity has a through hole that communicates with the top cover axially at the end of the cavity near the top cover. The top cover has a fixing hole, and the through hole corresponds to the fixing hole.

7. The filter element as described in claim 1, characterized in that, The top cover is provided with a first protrusion around its outer periphery. The first protrusion is mounted on the open end of the filter shell. The protective cover is fitted around the outer periphery of the top cover and is also mounted on the open end of the filter shell.

8. The filter element as described in claim 1, characterized in that, The top cover is provided with a second hand-held block, which is located away from the filter shell.

9. The filter element as described in claim 1, characterized in that, The filter housing is provided with anti-foolproof protrusions on its outer periphery.

10. A water purifier, characterized in that, Includes the filter element as described in any one of claims 1 to 9.

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