Filtering device for water purifier and water purifier

Abstract

The present application relates to water purification equipment technical field, specifically provide a kind of filter device and water purifier for water purifier, to solve the problem of existing water purifier when replacing filter element needs to be disconnected water and power, otherwise it will cause water leakage.For this, the filter device of the present application includes filter bottle and the filter core and plugging member arranged in filter bottle, opening is formed on filter bottle, plugging member is used to close opening when filter bottle is pulled out from water purifier, plugging member includes plug and limiting structure, when plug is located in opening, limiting structure is abutted on the inner wall of filter bottle to prevent plug from being pulled out from filter bottle, limiting structure has elasticity, so that limiting structure can pass through opening and enter filter bottle when installing plugging member.By such setting, when replacing filter element, water purifier does not need to be disconnected water and power, when filter bottle is pulled out from water purifier, limiting structure on plugging member can be abutted on the inner wall of filter bottle, thereby preventing plugging member from being pulled out from the opening of filter bottle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification equipment, and particularly provides a filter device for a water purifier and the water purifier. BACKGROUND

[0002] The existing water purifier needs to be powered off and water supply interrupted when replacing the filter cartridge. If the water purifier is not powered off and water supply interrupted, but is replaced with water supply, the plug installed in the filter bottle will be ejected from the outlet of the filter bottle when the filter bottle is removed, thereby causing water leakage in the filter bottle.

[0003] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0004] The present application aims to solve the above technical problems, i.e., to solve the problem that the existing water purifier needs to be powered off and water supply interrupted when replacing the filter cartridge, otherwise water leakage will occur.

[0005] In a first aspect, the present application provides a filter device for a water purifier, wherein the water purifier comprises a waterway board and a water inlet member arranged on the waterway board, and the filter device comprises:

[0006] a filter bottle, an opening corresponding to the water inlet member being formed on the filter bottle, and a filter cartridge being arranged in the filter bottle;

[0007] and a plugging member arranged in the filter bottle, the plugging member being used to plug the opening when the filter bottle is pulled out of the water purifier.

[0008] In the above filter device for a water purifier, the plugging member comprises a plug and a limiting structure arranged on the plug, the outer diameter of the plug is matched with the inner diameter of the opening, and the limiting structure is abutted against the inner wall of the filter bottle to prevent the plug from being ejected from the filter bottle through the opening when the plug is located in the opening, and the limiting structure is elastically deformed to smoothly pass through the opening and enter the filter bottle when the plugging member is installed.

[0009] In the above filter device for a water purifier, the limiting structure comprises a strip-shaped body and a limiting block arranged on the strip-shaped body, and the strip-shaped body is elastically deformed, and the limiting block is abutted against the inner wall of the filter bottle when the plug is located in the opening.

[0010] In the above filter device for a water purifier, the limiting block is provided with an abutting plane, and the abutting plane is abutted against the inner wall of the filter bottle when the plug is located in the opening.

[0011] In the preferred technical scheme of the filtering device for the water purifier, the limiting block is provided with an inclined surface, so that the limiting block can smoothly enter the opening when the blocking member is installed.

[0012] In the preferred technical scheme of the filtering device for the water purifier, the limiting block is a right-angled trapezoidal wedge, the inclined edge of the right-angled trapezoidal wedge constitutes the inclined surface, and the bottom edge of the right-angled trapezoidal wedge constitutes the abutting plane.

[0013] In the preferred technical scheme of the filtering device for the water purifier, the limiting block is a right-angled trapezoidal wedge, the inclined edge of the right-angled trapezoidal wedge constitutes the inclined surface, and the bottom edge of the right-angled trapezoidal wedge constitutes the abutting plane.

[0014] In the preferred technical scheme of the filtering device for the water purifier, the strip-shaped body is an elastic plate.

[0015] In the preferred technical scheme of the filtering device for the water purifier, the number of the limiting structures is two and the limiting structures are oppositely arranged.

[0016] In the preferred technical scheme of the filtering device for the water purifier, a spring is arranged in the filter bottle at a position corresponding to the opening, so that when the filter bottle is removed from the water purifier, the blocking member is pushed to the opening by the spring and the opening is blocked.

[0017] In the second aspect, the application further provides a water purifier comprising the filtering device for the water purifier.

[0018] In the case of adopting the above technical scheme, the filtering device of the application is provided with a limiting structure on the plug of the blocking member, and when the plug is located in the opening, the limiting structure can abut against the inner wall of the filter bottle to prevent the plug from being pulled out of the filter bottle through the opening. Through such arrangement, the water purifier does not need to be shut down when the filter core is replaced, and when the filter bottle is pulled out of the waterway plate under the condition of water supply and power supply, the limiting structure of the blocking member can abut against the inner wall of the filter bottle to prevent the blocking member from being pushed out of the opening of the filter bottle. In addition, the limiting structure is also elastic, and through such arrangement, when the blocking member is installed, the limiting structure is elastically deformed to smoothly pass through the opening and enter the filter bottle, thereby facilitating the installation of the blocking member.

[0019] Further, the filtering device of the application is provided with an abutting plane on the limiting block, which can abut against the inner wall of the filter bottle. Through such arrangement, the limiting block can more stably abut against the inner wall of the filter bottle, and the plug can be more effectively prevented from being pulled out of the opening of the filter bottle.

[0020] Further, the filter device of the present application is further provided with an inclined surface on the limiting block, so that the limiting block can smoothly enter the opening when the plugging member is installed. Through such arrangement, the installation of the plugging member is facilitated, and the assembly efficiency is improved.

[0021] Further, the filter device of the present application is further provided with a spring in the filter bottle, which can push the plugging member to the opening. Through such arrangement, even when the filter bottle is taken out from the waterway plate in the case of water and power cut, the plugging member can be pushed to the opening of the filter bottle by the spring to block the opening of the filter bottle, so as to prevent water leakage.

[0022] In addition, the water purifier provided by the present application further comprises the filter device described above, and thus has the technical effects of the filter device. Compared with the water purifier before the improvement, the water purifier of the present application does not need to be cut off water and power when replacing the filter element, which is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0023] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0024] Figure 1 is an assembly structure diagram of the filter device of the water purifier and the waterway plate of the present application;

[0025] Figure 2 is Figure 1 is a local enlarged diagram of A in FIG. 1, which shows the positional relationship of each component in the normal working state of the water purifier;

[0026] Figure 3 is Figure 1 is a local enlarged diagram of A in FIG. 1, which shows the positional relationship of each component when replacing the filter element in the case of water and power on;

[0027] Figure 4 is Figure 1 is a local enlarged diagram of A in FIG. 1, which shows the positional relationship of each component when replacing the filter element in the case of water and power off;

[0028] Figure 5 is a three-dimensional structure diagram of the plugging member of the present application.

[0029] LIST OF REFERENCE NUMERALS

[0030] 1, waterway plate; 11, water inlet member; 2, filter bottle; 21, opening; 22, filter element; 231, plug; 232, limiting structure; 2321, strip-shaped body; 2322, limiting block; 2323, abutting plane; 2324, inclined surface; 24, fixed column; 25, spring. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the scope of protection of the present application.

[0032] It should be noted that, in the description of the present application, the terms "upper", "lower", "inner", "outer" and the like indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, it should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 is an assembly structure diagram of the filter device and the waterway board of the water purifier of the present application; Figure 2 is Figure 1 a partial enlarged view of A in FIG. 1, wherein the position relationship diagram of the components in the normal working state of the water purifier is shown.

[0035] It should be noted that, in order to more clearly show the specific structure of the blocking member, the hidden parts of irrelevant parts in the enlarged view of Figure 2 .

[0036] As shown in Figure 1 and Figure 2 , the water purifier of the present application comprises a waterway board 1 and a filter device, wherein the waterway board 1 is provided with a water inlet member 11, the filter device comprises a filter bottle 2 and a filter core 22 and a blocking member provided in the filter bottle 2, the filter bottle 2 is formed with an opening 21, the water inlet member 11 can be inserted into the filter bottle 2 through the opening 21, and the blocking member is used to block the opening 21 when the filter bottle 2 is pulled out from the waterway board 1 of the water purifier.

[0037] Please continue to refer to Figure 2 , and then refer to Figures 3 to 5 , Figure 3 is Figure 1 a partial enlarged view of A in FIG. 1, wherein the position relationship diagram of the components when replacing the filter core under the condition of water and power is shown, Figure 4 is Figure 1 a partial enlarged view of A in FIG. 1, wherein the position relationship diagram of the components when replacing the filter core under the condition of water and power is shown,Figure 5 is a schematic view of a perspective structure of the plugging member of the present application.

[0038] As shown in Figures 2 to 5 , the plugging member comprises a plug 231 and a limiting structure 232 arranged on the plug 231, the outer diameter size of the plug 231 is matched with the inner diameter size of the opening 21, when the plug 231 is located in the opening 21, the limiting structure 232 abuts against the inner wall of the filter bottle 2 to prevent the plug 231 from being ejected from the filter bottle 2 through the opening 21, and the limiting structure 232 also has elasticity, when the plugging member is installed, the plugging member can smoothly pass through the opening 21 and enter the filter bottle 2 by making the limiting structure 232 elastically deform.

[0039] Through such a setting, on the one hand, when the filter bottle 2 is pulled out of the waterway plate 1 in the case of water and electricity, the limiting structure 232 of the plugging member can abut against the inner wall of the filter bottle 2 to prevent the plugging member from being ejected from the opening 21, improving the user experience; on the other hand, the limiting structure 232 has elasticity, so that when the plugging member is installed, the limiting structure 232 elastically deforms to make the limiting structure 232 smoothly pass through the opening 21 and enter the filter bottle 2, facilitating the installation of the plugging member.

[0040] It should be noted that in actual application, the skilled in the art can set the filtering device as an integrated filter element, that is, the filter bottle 2 and the filter element 22 are arranged as an integrated structure, when the filter element 22 is replaced, the integrated filter element is taken off from the waterway plate 1 and a new integrated filter element is replaced, or the filtering device can also be set as a non-integrated filter element, when the filter element 22 is replaced, the filtering device is first taken off from the waterway plate 1, then the filter element 22 is taken off from the filter bottle 2, the new filter element 22 is installed in the filter bottle 2, and then the filter bottle 2 is installed on the waterway plate 1, and the like, such adjustment and change of the specific setting type of the filtering device does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0041] Preferably, the filtering device is set as an integrated filter element, when the filtering device needs to be replaced, the integrated filter element is taken off from the waterway plate 1, and then a new integrated filter element is installed on the waterway plate 1 to realize the replacement of the filter element 22.

[0042] Through such a setting, when the filter element 22 is replaced, the filter element 22 and the filter bottle 2 do not need to be assembled, so that the replacement of the filter element 22 is more convenient, further improving the user's use experience.

[0043] It should be noted that in the case of water and electricity, when the filter bottle 2 is pulled out of the waterway plate 1, there will be a large pressure in the filter bottle 2, and those skilled in the art can set the blocking member to block the opening 21 by the pressure in the filter bottle 2, or a fixed column 24 can be arranged in the filter bottle 2, which is fixed relative to the filter bottle 2, and a spring 25 is arranged between the blocking member and the fixed column 24 to block the opening 21, and the like. Such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0044] Preferably, as shown in Figure 2 The filter bottle 2 is provided with a fixed column 24, which is fixedly connected with the inner wall of the filter bottle 2 and is fixed relative to the filter bottle 2. The blocking member is located below the fixed column 24, and a spring 25 is arranged between the blocking member and the fixed column 24. When the filter bottle 2 is installed on the waterway plate 1, the water inlet member 11 is inserted into the filter bottle 2 from the opening 21, and the blocking member moves towards the fixed column 24 under the pushing action of the water inlet member 11 and overcomes the pressure of the spring 25. At this time, the blocking member is moved to the inside of the filter bottle 2 to release the blocking of the opening 21. When the filter bottle 2 is pulled out of the waterway plate 1 (as shown in Figure 3 and Figure 4 The water inlet member 11 on the waterway plate 1 is separated from the filter bottle 2, and the blocking member moves towards the opening 21 under the restoring force of the spring 25, and the plug 231 of the blocking member blocks the opening 21.

[0045] By such arrangement, compared with the case of blocking the opening 21 by the pressure in the filter bottle 2 when the filter bottle 2 is taken out in the case of water and electricity, by arranging the fixed column 24 and the spring 25 in the filter bottle 2, it can be applied to the case of taking out the filter bottle 2 in the case of water and electricity, and also can be applied to the case of taking out the filter bottle 2 in the case of no water and no electricity, that is, to prevent the case of not blocking the opening 21 by the blocking member due to insufficient pressure in the filter bottle 2 when the filter bottle 2 is taken out in the case of no water and no electricity, thereby causing water leakage.

[0046] It should be noted that in actual application, those skilled in the art can set the limiting structure 232 as a limiting block with elasticity, or can set the limiting structure 232 as a limiting ring with elasticity, or can set the limiting structure 232 as a combination of a limiting strip and a limiting block with elasticity, and the like. Such adjustment and change of the specific structure of the limiting structure 232 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0047] Preferably, as shown in Figures 2 to 5As shown, the limiting structure 232 includes a strip-shaped body 2321 and a limiting block 2322 disposed on the strip-shaped body 2321. The strip-shaped body 2321 can undergo elastic deformation. When the plug 231 is located in the opening 21, the limiting block 2322 can abut against the inner wall of the filter bottle 2.

[0048] With this configuration, namely by setting the limiting structure 232 with a strip-shaped body 2321 and a limiting block 2322, on the one hand, when the sealing component is installed, the strip-shaped body 2321 can drive the limiting block 2322 to undergo elastic deformation, so that the limiting block 2322 can smoothly enter the filter bottle 2 from the opening 21, facilitating the installation of the sealing component; on the other hand, when the plug 231 is located in the opening 21, the limiting block 2322 abuts against the inner wall of the filter bottle 2, preventing the sealing component from being ejected from the opening 21, thereby avoiding water leakage.

[0049] It should be noted that in practical applications, the limiting structure 232 is not limited to being configured as a strip-shaped body 2321 and a limiting block 2322. For example, the limiting structure 232 can also be configured as an elastically deformable arc-shaped plate and a limiting block 2322, or it can be configured as an elastically deformable cylindrical shape and a limiting block 2322, and so on. Such adjustments and changes to the specific structural form of the limiting structure 232 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention. Of course, it is preferable to configure the limiting structure 232 as a strip-shaped body 2321 and a limiting block 2322.

[0050] It should also be noted that, in practical applications, those skilled in the art can configure the strip body 2321 as an elastic rod, or as an elastic plate, or as an elastic sheet, etc. Such adjustments and changes to the specific structural form of the strip body 2321 do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0051] Preferably, such as Figures 2 to 5 As shown, the strip-shaped body 2321 is configured as an elastic plate.

[0052] Preferably, such as Figures 2 to 5 As shown, the limiting block 2322 is provided with an abutting surface 2323. When the plug 231 is located inside the opening 21, the abutting surface 2323 can abut against the inner wall of the filter bottle 2.

[0053] Through such an arrangement, when the filter bottle 2 is taken off from the waterway plate 1, the abutting plane 2323 on the limiting block 2322 abuts against the inner wall of the filter bottle 2 when the plug 231 is bounced to the opening 21, so as to prevent the plug 231 from being taken off from the opening 21, thereby avoiding water leakage.

[0054] It should be noted that in actual application, the skilled in the art can set the limiting block 2322 as a rectangular block, the perpendicular side of the rectangular block to the outer side of the strip-shaped body 2321 as the abutting plane 2323, or set the limiting block 2322 as a wedge-shaped block with at least one right angle, the right angle side of the wedge-shaped block to the outer side of the strip-shaped body 2321 as the abutting plane 2323, or set the limiting block 2322 as an arc-shaped block, the arc surface of the arc-shaped block to the outer side of the strip-shaped body 2321 as the abutting plane 2323, and the like, and such adjustment and change of the specific shape of the limiting block 2322 does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0055] Preferably, as shown in Figures 2 to 5 , an inclined plane 2324 is arranged on the limiting block 2322, so as to make the limiting block 2322 smoothly enter the opening 21 when the plugging member is installed.

[0056] Through such an arrangement, when the limiting block 2322 contacts the opening 21 when the plugging member is installed, the opening 21 of the filter bottle 2 acts on the inclined plane 2324 of the limiting block 2322, and makes the limiting block 2322 drive the strip-shaped body 2321 to elastically deform, so as to make the limiting block 2322 smoothly enter the filter bottle 2 from the opening 21, thereby facilitating the installation of the plugging member.

[0057] Preferably, as shown in Figures 2 to 5 , the limiting block 2322 is set as a triangular wedge block, the inclined side of the triangular wedge block as the inclined plane 2324, and one right angle side of the triangular wedge block as the abutting plane 2323.

[0058] Through such an arrangement, when the plugging member is installed, the inclined plane 2324 of the limiting block 2322 is placed at the opening 21 of the filter bottle 2, the opening 21 of the filter bottle 2 acts on the inclined plane 2324, and makes the inclined plane 2324 drive the strip-shaped body 2321 to elastically deform, so as to make the limiting block 2322 smoothly enter the filter bottle 2 from the opening 21; when the filter bottle 2 is taken off from the waterway plate 1, the plug 231 of the plugging member is plugged at the opening 21, and the abutting plane 2323 on the limiting block 2322 abuts against the inner side of the opening 21 of the filter bottle 2 (as shown in Figure 3 ), so as to prevent the plugging member from being taken off from the opening 21.

[0059] It should be noted that in actual application, the limiting block 2322 is not limited to the above-mentioned triangular wedge, for example, the limiting block 2322 can also be set as a right-angled trapezoidal wedge, the inclined edge of the right-angled trapezoidal wedge constitutes the inclined surface 2324, and the bottom edge of the right-angled trapezoidal wedge constitutes the abutting surface 2323, etc. The adjustment and change of the specific shape of the limiting block 2322 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0060] It should be further noted that in actual application, the number of the limiting structure 232 can be set as two or more by those skilled in the art, etc. The adjustment and change of the specific number of the limiting structure 232 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0061] Preferably, as shown in Figures 2 to 5 , the number of the limiting structure 232 is set as two.

[0062] It should be noted that in actual application, the limiting structure 232 can be set to be distributed along the circumference of the plug 231, or can be set on both sides of the plug 231, etc. The adjustment and change of the specific position of the limiting structure 232 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0063] Preferably, as shown in Figures 2 to 5 , the limiting structure 232 is set as two and oppositely arranged along the plug 231.

[0064] Through such setting, when the filter bottle 2 is pulled out from the waterway plate 1 and the plug 231 seals the opening 21, the two limiting structures 232 can abut on both ends of the opening 21 (as shown in Figure 4 ), so that the two sides of the plug 231 are balanced, preventing the plug 231 from being skewed due to uneven force, thereby affecting the sealing effect.

[0065] The installation and dismounting process of the filter device of the present application will be introduced in detail below. Figure 1 , Figure 2 , Figure 3 and Figure 4 .

[0066] As shown in Figure 1 and Figure 2As shown, when the blocking member needs to be installed into the filter bottle 2, the inclined surface 2324 of the limiting block 2322 is first abutted against the opening 21 of the filter bottle 2, and the plug 231 is pressed towards the filter bottle 2, the opening 21 of the filter bottle 2 acts on the inclined surface 2324 to deform the strip-shaped body 2321, and at the same time, the two limiting blocks 2322 are moved towards each other, until the blocking member is moved into the filter bottle 2, and the inner side of the blocking member is in contact with the spring 25, to achieve the installation of the blocking member in the filter bottle 2.

[0067] In the normal use of the water purifier, the opening 21 of the filter bottle 2 is aligned with the water inlet member 11 on the waterway plate 1, and the water inlet member 11 is inserted into the filter bottle 2, so that the water inlet member 11 can introduce the water from the faucet into the filter bottle 2, and then the water entering the filter bottle 2 is filtered by the filter element 22 in the filter bottle 2, and finally discharged from the water outlet (not shown in the figure). When the water inlet member 11 is inserted into the filter bottle 2, it will push the blocking member to overcome the elastic force of the spring 25 and move towards the fixed column 24, so that the plug 231 of the blocking member is separated from the opening 21, and the water purifier is used normally.

[0068] As shown in the figure, Figure 4 As shown in the figure, in the case of water and power off, when the filter device needs to be taken out, the filter bottle 2 gradually separates from the waterway plate 1, and the water inlet member 11 gradually moves out of the filter bottle 2, and the blocking member moves towards the opening 21 under the restoring force of the spring 25 and blocks the opening 21 with the plug 231 of the blocking member, thereby avoiding water leakage of the filter bottle 2 and improving the user experience.

[0069] As shown in the figure, Figure 3 As shown in the figure, in the case of water and power off, when the filter device needs to be taken out, the filter bottle 2 gradually separates from the waterway plate 1, and the water inlet member 11 gradually moves out of the filter bottle 2, and the blocking member moves towards the opening 21 under the restoring force of the spring 25 and blocks the opening 21 with the plug 231 of the blocking member, thereby avoiding water leakage of the filter bottle 2 and improving the user experience.

[0070] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A filtration device for a water purifier, characterized in that, The water purifier includes a water circuit board and a water inlet component disposed on the water circuit board, and the filtration device includes: A filter bottle having an opening adapted to the water inlet component, and a filter element being disposed inside the filter bottle; And a sealing member located inside the filter bottle, the sealing member being used to seal the opening when the filter bottle is pulled out of the water purifier; The sealing component includes a plug and a limiting structure disposed on the plug. The outer diameter of the plug is adapted to the inner diameter of the opening. When the plug is located in the opening, the limiting structure abuts against the inner wall of the filter bottle to prevent the plug from coming out of the filter bottle through the opening. The limiting structure is elastic so that it can undergo elastic deformation when the sealing component is installed, thereby allowing the limiting structure to pass smoothly through the opening and enter the filter bottle. The limiting structure includes a strip-shaped body and a limiting block disposed on the strip-shaped body. The strip-shaped body is capable of elastic deformation. When the plug is located in the opening, the limiting block can abut against the inner wall of the filter bottle. A spring is installed inside the filter bottle at a position corresponding to the opening, so that when the filter bottle is removed from the water purifier, the sealing member is pushed to the opening by the spring and seals the opening.

2. The filtration device for a water purifier according to claim 1, characterized in that, The limiting block is provided with an abutting surface, which can abut against the inner wall of the filter bottle when the plug is located in the opening.

3. The filtration device for a water purifier according to claim 2, characterized in that, The limiting block is provided with an inclined surface so that the limiting block can smoothly enter the opening when the sealing component is installed.

4. The filtration device for a water purifier according to claim 3, characterized in that, The limiting block is a triangular wedge, the hypotenuse of which forms the inclined surface, and one right-angled side of which forms the abutting plane.

5. The filtration device for a water purifier according to claim 3, characterized in that, The limiting block is a right-angled trapezoidal wedge, the hypotenuse of which forms the inclined surface, and the base of which forms the abutting plane.

6. The filtration device for a water purifier according to claim 1, characterized in that, The strip-shaped body is an elastic plate.

7. The filtration device for a water purifier according to any one of claims 1 to 6, characterized in that, The number of limiting structures is two, and they are arranged opposite to each other.

8. A water purifier, characterized in that, The filtration device includes any one of claims 1 to 7.

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