Filtration and water purification equipment

Abstract

The present application provides a filtering device and a water purification device, wherein the filtering device comprises: a fixing seat and a filter element assembly. The fixing seat is provided with an installation cavity; the filter element assembly is constructed to be detachably connected to the fixing seat; the filter element assembly comprises a filter element body, and a locking portion rotatably connected to the filter element body, the locking portion being constructed to be able to rotate relative to the filter element body to a locked position locked with the fixing seat and an unlocked position unlocked with the fixing seat; a positioning portion is movably provided on the locking portion, and a limiting portion is provided on the filter element body; the positioning portion is configured to be able to move to a position cooperating with the limiting portion to limit the rotational freedom of the locking portion relative to the filter element body; the locking portion can move to a position separated from the limiting portion to release the rotational freedom of the locking portion relative to the filter element assembly. The present application reduces the difficulty of disassembling and assembling the filter element assembly by providing the locking portion, and the locking portion can be fixed in a locked position by the positioning portion, thereby enhancing the reliability of the installation of the filter element assembly.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a filtering device; the present application also relates to a water purification device. Background Art

[0002] Water purification equipment is a water treatment equipment that deeply filters and purifies water according to the requirements for water use. With the improvement of living standards and health awareness, people's demand for healthy drinking water is increasing, and more and more consumers choose to install water purification equipment at home. As the amount of filtered water increases, a large amount of dirt will adhere to the filter element in the water purification equipment, affecting the filtering performance of the filter element. In order to ensure the normal operation of the filter element, users need to replace the filter element regularly.

[0003] At present, the way to replace the filter element of household water purifier equipment is mostly manual disassembly and assembly by users. As the filter element develops towards the direction of all-in-one and large flux, the size of the filter element is increasing, which makes the disassembly and assembly process inconvenient. In addition, since the user may not be able to install the filter element in place, or the locking structure of the filter element may be disengaged due to water flow vibration, water leakage may occur. How to reduce the difficulty of disassembly and assembly of the filter element and improve the reliability of filter element installation is a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a filtering device and a water purification device to solve the above-mentioned problems existing in the prior art.

[0005] According to a first aspect of an embodiment of the present application, a filtering device is provided, comprising:

[0006] A fixing seat, wherein the fixing seat has a mounting cavity;

[0007] A filter element assembly, the filter element assembly is configured to be detachably connected to the fixing seat; the filter element assembly comprises a filter element body, and a locking portion rotatably connected to the filter element body, the locking portion being configured to be rotatable relative to the filter element body to a locking position for locking with the fixing seat and an unlocking position for unlocking with the fixing seat;

[0008] Among them, a positioning part is movably provided on the locking part, and a limiting part is provided on the filter element body; the positioning part is configured to be able to move to a position cooperating with the limiting part to limit the rotational freedom of the locking part relative to the filter element body; the locking part can move to a position separated from the limiting part to release the rotational freedom of the locking part relative to the filter element assembly.

[0009] In one embodiment of the present application, the filter element assembly further comprises a handle hinged on the locking portion, the positioning portion is arranged on the handle, and is configured to move with the handle to engage with or separate from the limiting portion.

[0010] In one embodiment of the present application, the rotation axis of the locking portion relative to the filter element body is constructed to be coaxial with the central axis of the filter element body; the rotation axis of the handle is constructed to be perpendicular to the rotation axis of the locking portion.

[0011] In one embodiment of the present application, a groove is provided on the end surface of the locking portion, and the groove is configured to match the handle; when the positioning portion moves to cooperate with the limiting portion, the handle is configured to be located in the groove.

[0012] In one embodiment of the present application, the handle is hinged on the outside of the locking portion, and the limiting portion is constructed as a positioning groove arranged on the filter element body; the locking portion is provided with a through hole adapted to the limiting portion; the positioning portion is constructed to extend through the through hole to cooperate with the positioning groove during the movement of the handle to fix the locking portion in a locked position.

[0013] In one embodiment of the present application, the opposite ends of the handle are configured to be hinged at the opposite ends of the groove; and the positioning portion is disposed on the handle at a position adjacent to the hinge point of the handle.

[0014] In one embodiment of the present application, a locking component is provided on the locking portion, and a matching component is provided on the fixing seat; the locking portion is constructed to be able to drive the locking component to move to match or disengage with the matching component during rotation relative to the filter element body.

[0015] In one embodiment of the present application, the locking component is constructed to extend radially outward from the circumferential side wall of the locking portion; the fixed seat is provided with an installation opening for the filter element body to penetrate into the installation cavity, and the mating component is a locking groove arranged on the inner wall of the installation opening; when the locking portion is rotated to the locking position, the locking component is constructed to be located in the locking groove; when the locking portion is rotated to the unlocking position, the locking component disengages from the locking groove.

[0016] In one embodiment of the present application, the locking groove is constructed to extend along the circumferential direction of the inner wall of the mounting port, and the two opposite ends of the locking groove are respectively recorded as the first end and the second end; a through groove is axially arranged on the end surface of the fixed seat and passes through the first end of the locking groove; in the process of axial movement of the filter element assembly, the locking member is constructed to move through the through groove to a position corresponding to the first end of the locking groove, and in the process of rotation of the locking part, it moves from the first end of the locking groove to a locking position corresponding to the second end.

[0017] In one embodiment of the present application, two of the engaging grooves and two of the locking components are respectively provided; the two engaging grooves and two of the locking components are respectively symmetrically distributed on the inner wall of the installation opening and the circumferential side wall of the locking portion with the axis of the filter element body as the axis.

[0018] In one embodiment of the present application, a first limiting portion extending along the axis of the filter element body is provided on the inner wall of the installation cavity; a second limiting portion guiding and cooperating with the first limiting portion is provided on the outer wall of the filter element body; the first limiting portion and the second limiting portion are constructed to limit the axial movement of the filter element assembly in the installation cavity.

[0019] In one embodiment of the present application, one of the first limiting portion and the second limiting portion is constructed as a limiting groove, and the other is constructed as a limiting rib; the limiting rib is constructed to cooperate with the limiting groove for guidance.

[0020] In one embodiment of the present application, the filter element assembly also includes an end cover connected to the filter element body, and the locking portion is constructed to be located between the end cover and the filter element body, and there is a gap between the end cover and the filter element body for the locking portion to rotate relative to the filter element body and the end cover.

[0021] In one embodiment of the present application, a central through hole is provided at the center of the locking portion, and a step groove is provided on the inner wall of the central through hole; the end cover has a protrusion extending in the circumferential direction; the protrusion is constructed to be pressed on the step groove to limit the locking portion to the filter element body.

[0022] According to a second aspect of an embodiment of the present application, there is provided a water purification device, comprising:

[0023] A shell body, wherein a water inlet pipe and a water outlet pipe are arranged in the shell body;

[0024] According to the filtering device described in the first aspect of the embodiment of the present application, the filtering device is configured to filter the external water source from the water inlet pipe, and is configured to discharge the filtered clean water through the water outlet pipe.

[0025] The present application provides a filter element device that is easy to disassemble and reliably connect. The filter element assembly can be extended into the installation cavity along the axial direction. The user does not need to rotate the heavy filter element body, but can lock or unlock by rotating the locking part on the filter element body, thereby connecting or decoupling the filter element assembly to the fixed seat. The present application provides a locking part that is rotatably connected to the filter element body, thereby making the user's operation easier and reducing the difficulty of disassembly and assembly.

[0026] When the locking part is installed in place, the positioning part on the locking part can move to a position that matches with the limiting part, thereby limiting the rotational freedom of the locking part. In other words, the locking part can be fixed in a locked position by the positioning part, and will not automatically rotate to an unlocked position under the action of external forces such as water flow impact, thereby enhancing the reliability of the installation of the filter element assembly. The limiting part is arranged on the filter element body, thereby utilizing the large weight of the filter element body itself to prevent the locking part from moving due to external vibration or water flow vibration, thereby avoiding the unlocking of the filter element assembly from the fixing seat. In addition, only when the positioning part moves to a position that matches with the limiting part can it be proved that the locking part is installed in place, thereby facilitating the user to judge whether the filter element assembly is installed in place. The user will not misjudge the installation status when it is not installed in place, thereby avoiding the situation of water leakage due to failure to install in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of the filter device provided by one embodiment of the present application when the filter element assembly is in a locked position;

[0028] Figure 2 is a schematic diagram of the structure of the filter device provided by one embodiment of the present application when the filter element assembly is in the unlocked position;

[0029] Figure 3 It is a schematic diagram of the structure of a fixing base provided in one embodiment of the present application;

[0030] Figure 4 is a cross-sectional view of a filter device provided in one embodiment of the present application;

[0031] Figure 5 This is a structural schematic diagram of the position of the mounting opening of the fixing seat provided in one embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the locking structure provided by an embodiment of the present application;

[0033] Figure 7 is a cross-sectional view of a filtering device provided by an embodiment of the present application from another angle;

[0034] Figure 8 is an exploded view of a filter element assembly provided in one embodiment of the present application;

[0035] Fig. 9 is a partial cross-sectional view of a filter element assembly provided in one embodiment of the present application;

[0036] Fig.10 is a partial cross-sectional exploded view of a filter element assembly provided in one embodiment of the present application;

[0037] Fig.11 is a partial cross-sectional view of a filter element assembly provided by an embodiment of the present application from another angle;

[0038] Fig.12 It is a partial cross-sectional exploded view from another angle of the filter element assembly provided in one embodiment of the present application.

[0039] Figures 1 to 12 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0040] 1. Fixing seat; 10. Mounting cavity; 101. Mounting opening; 11. Engaging groove; 110. Through groove; 111. First end; 112. Second end; 113. Blocking portion; 12. Limiting groove; 2. Filter element assembly; 21. Filter element body; 211. Positioning groove; 212. Limiting rib; 22. Locking portion; 221. Groove; 222. Through hole; 223. Locking member; 224. Center through hole; 225. Step groove; 23. Handle; 231. Positioning portion; 24. Articulated shaft; 25. End cover; 251. Protrusion. DETAILED DESCRIPTION

[0041] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0042] The terms used in one or more embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of the present application. The singular forms of "a", "said" and "the" used in one or more embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items.

[0043] It should be understood that, although the terms first, second, etc. may be used to describe various information in one or more embodiments of the present application, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0044] It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

[0045] The techniques, methods and devices known to those skilled in the art may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered as part of the specification. It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in the subsequent figures.

[0046] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0047] In the present application, a filtering device and a water purification device are provided, and the following reference is made to Figures 1 to 12 , the specific structure and working principle of the filter device of the present application are described in detail with an embodiment. It should be noted that the present application also provides a water purification device. In order to keep the text concise, the water purification device is introduced together with the filter device in this article.

[0048] The present application provides a water purification device, comprising: a housing and a filtering device, wherein a water inlet pipeline and a water outlet pipeline are arranged in the housing, and the filtering device is configured to filter an external water source from the water inlet pipeline, and is configured to discharge the filtered purified water through the water outlet pipeline. A water inlet may be arranged on the housing, and a water source pipeline for water intake may be connected to the water inlet, and an external water source (such as tap water) can flow into the water source pipeline and enter the water inlet pipeline inside the water purification device through the water inlet. The filtering device may be a filter element dedicated to the water purification device, and it is understood that the water filtered by the filtering device meets the standard for direct drinking. The water outlet pipeline is a pipeline connected to a downstream position of the filtering device, and the purified water obtained after filtration can be discharged from the water purification device through the water outlet pipeline.

[0049] refer to Figures 1 to 3 The filtering device comprises: a fixing seat 1 and a filter element assembly 2. The fixing seat 1 may be a structure fixedly arranged inside the housing of the water purification device, and the filter element assembly 2 is configured to be detachably connected to the fixing seat 1. Figure 3 As shown, the fixing seat 1 has a mounting cavity 10 , the mounting cavity 10 can be constructed as a cylindrical cavity, and the filter element assembly 2 can be constructed as a cylindrical shape that matches the mounting cavity 10 .

[0050] like Figure 1 As shown, when the filter element assembly 2 is inserted into the installation cavity 10, the filter element assembly 2 is connected to the fixing seat 1, and the water inlet and outlet on the filter element assembly 2 are connected to the water path of the fixing seat 1. At this time, the water purification device can work normally, and the filtering device can filter and purify the water. As the amount of filtered water increases, a large amount of dirt will adhere to the filter element assembly 2, so the user needs to replace the filter element assembly 2 regularly. Specifically, Figure 2As shown, the user needs to first remove the filter element assembly 2 from the fixing seat 1, that is, pull the filter element assembly 2 out of the installation cavity 10, and then replace it with a new filter element assembly 2 to ensure the normal operation of the filtering function of the water purification equipment.

[0051] like Figure 2 As shown, the filter element assembly 2 includes a filter element body 21 and a locking portion 22 rotatably connected to the filter element body 21. The locking portion 22 is constructed to be able to rotate relative to the filter element body 21 to a locking position locked with the fixing seat 1 and an unlocking position unlocked with the fixing seat 1. Figure 1 The figure shows the situation that the locking part 22 rotates to the locking position, the locking part 22 is locked together with the fixing seat 1, and the filter element body 21 is completely located in the installation cavity 10, so that the water purification work can be carried out normally. Figure 2 The figure shows the situation that the locking part 22 rotates to the decoupling position, the locking part 22 is decoupled from the fixing seat 1, and the user can pull the filter element body 21 out of the installation cavity 10 to replace the filter element assembly 2.

[0052] In one embodiment of the present application, reference Figure 3 , Figure 4 and Figure 8 The inner wall of the installation cavity 10 is provided with a first limiting portion extending along the axis of the filter element body 21, and the outer wall of the filter element body 21 is provided with a second limiting portion guiding and cooperating with the first limiting portion; the first limiting portion and the second limiting portion are configured to limit the axial movement of the filter element assembly 2 in the installation cavity 10. Specifically, one of the first limiting portion and the second limiting portion is configured as a limiting groove 12, and the other is configured as a limiting rib 212, and the limiting rib 212 is configured to guide and cooperate with the limiting groove 12.

[0053] Specifically, Figure 3 As shown, the limiting groove 12 in this embodiment is arranged on the inner wall of the installation cavity 10, and the limiting groove 12 is configured to extend along the axial direction of the filter element body 21; Figure 8 As shown, the limiting rib 212 is arranged on the outer wall of the filter element body 21, and the limiting rib 212 is constructed to extend along the axial direction of the filter element body 21, and is constructed to have a shape that matches the limiting groove 12, so as to form a guiding match with the limiting groove 12. When the filter element assembly 2 moves in the installation cavity 10, the limiting rib 212 can slide relative to the limiting groove 12, and the filter element assembly 2 can only move in the axial direction in the installation cavity 10 under the guiding and limiting action of the limiting rib 212 and the limiting groove 12, and will not rotate in the installation cavity 10. Moreover, such a design makes it possible for the filter element body 21 itself to be transferred into the installation cavity 10 only at a specific angle. After installation, the water inlet and outlet are connected with the waterway in the fixing seat 1, which reduces the difficulty of installation, and the user can only disassemble and assemble the filter element assembly 2 along a single direction.

[0054] In a specific embodiment of the present application, two limit grooves 12 and two limit ribs 212 can be provided respectively, and the two limit grooves 12 and the limit ribs 212 are symmetrically arranged on the inner wall of the installation cavity 10 and the outer wall of the filter element body 21 along the axis of the filter element body 21. Such a design further enhances the guiding effect, and the double guiding limit of the symmetrical design makes the guiding effect of the limit groove 12 and the limit rib 212 more stable. In addition, the provision of two limit ribs 212 enables the user to locate the installation direction more quickly, and also allows the user to quickly realize the guiding effect of the limit rib 212, thereby enhancing the user's experience.

[0055] In one embodiment of the present application, reference Figure 3 , Figures 5 to 7 The locking part 22 is provided with a locking member 223, and the fixing seat 1 is provided with a matching member. The locking part 22 is configured to drive the locking member 223 to move to match or disengage with the matching member during the rotation relative to the filter element body 21. Specifically, Figure 6 The locking member 223 is configured to extend radially outward from the circumferential side wall of the locking portion 22 . In the case where the locking portion 22 is in a disc shape, the locking member 223 is configured to protrude from the circumferential outer wall surface of the locking portion 22 .

[0056] like Figure 3 and Figure 5 As shown, the fixing seat 1 is provided with an installation opening 101 for the filter element body 21 to penetrate into the installation cavity, and the installation opening 101 can be constructed as a circular opening adapted to the diameter of the filter element body 21. The matching component is a snap-fit ​​groove 11 arranged on the inner wall of the installation opening 101. When the locking portion 22 rotates to the locking position, the locking component 223 is constructed to be located in the snap-fit ​​groove 11. At this time, the locking portion 22 is restricted inside the snap-fit ​​groove 11 and cannot move in the axial direction of the filter element body 21, thereby realizing the axial limitation of the filter element assembly 2 and preventing the filter element assembly 2 from escaping from the installation opening 101. When the locking portion 22 rotates to the unlocking position, the locking component 223 disengages from the snap-fit ​​groove 11, the filter element body 21 no longer has axial limitation, and the user can pull the filter element assembly 2 out of the installation opening 101.

[0057] like Figure 5 As shown, the engaging groove 11 is configured to extend along the circumferential direction of the inner wall of the mounting opening 101, so that the locking member 223 protruding from the circumferential outer wall thereof is driven to move to engage with or disengage from the engaging groove 11 during the rotation of the locking portion 22. The opposite ends of the engaging groove 11 are respectively denoted as the first end 111 and the second end 112. Figure 5In the viewing direction, the direction from the first end 111 to the second end 112 is the counterclockwise direction. A through groove 110 is axially arranged on the end surface of the fixing seat 1 and penetrates to the first end of the engaging groove 11. In the process of axial movement of the filter element assembly 2, the locking member 223 is configured to move to a position corresponding to the first end 111 of the engaging groove 11 through the through groove 110, and to move from the first end 111 of the engaging groove 11 to a locking position corresponding to the second end 112 in the process of rotating with the locking portion 22.

[0058] A blocking portion 113 is disposed on the fixing base 1 near the first end 111 of the engaging groove 11. Figure 7 As shown, when the locking portion 22 is in the locked position, the locking member 223 can be restricted in the through groove 110 by the blocking portion 113. Specifically, the locking portion 22 can rotate along the second end 112 toward the first end 111, so that the locking member 223 enters the through groove 110, until the locking member 223 is completely rotated to the blocking portion 113 position and stops, at which time the locking portion 22 moves to the locked position. The present application realizes axial limitation of the filter element assembly 2 by the blocking portion 113, and the filter element assembly 2 cannot move in the axial direction.

[0059] The locking portion 22 can rotate along the first end 111 toward the second end 112, so that the locking member 223 is away from the blocking portion 113. When the locking member 223 rotates to a position where it is completely not blocked by the blocking portion 113 in the axial direction, the locking portion 22 moves to the unlocking position. At this time, the locking member 223 is completely separated from the through groove 110, the locking member 223 is no longer restricted by the blocking portion 113, and the filter element assembly 2 can move freely in the axial direction.

[0060] In one embodiment of the present application, reference Figure 3 and Figure 6 , two engaging grooves 11 and two locking members 223 are respectively provided, and the two engaging grooves 11 and the locking members 223 are respectively symmetrically distributed on the inner wall of the installation opening 101 and the circumferential side wall of the locking part 22 with the axis of the filter element body 21 as the axis. Such a design improves the locking firmness of the locking part 22, and the symmetrically designed double locking structure enables the two locking members 223 to be respectively restricted in the two through grooves 110 by the blocking parts 113 of the two engaging grooves 11, thereby axially limiting the filter element assembly 2 at two positions, so that the filter element assembly 2 can be more firmly locked in the fixing seat 1.

[0061] In one embodiment of the present application, reference Figure 8The filter element assembly 2 also includes an end cap 25 connected to the filter element body 21, and the end cap 25 can be fixedly connected to the end surface of the filter element body 21 by screws, welding or gluing. The locking portion 22 is configured to be located between the end cap 25 and the filter element body 21, and there is a gap between the end cap 25 and the filter element body 21 for the locking portion 22 to rotate relative to the filter element body 21 and the end cap 25. The locking portion 22 can rotate relative to the filter element body 21 and the end cap 25, so that the user can lock or unlock by rotating the thin locking portion 22 without rotating the heavy filter element body 21, thereby improving the user's experience.

[0062] Specifically, refer to Figure 6 The locking portion 22 is provided with a central through hole 224 at its center, and a step groove 225 is provided on the inner wall of the central through hole 224. Fig.11 and Fig.12 The end cover 25 has a protrusion 251 extending in the circumferential direction, and the protrusion 251 is configured to be pressed on the step groove 225 to limit the locking part 22 on the filter element body 21. The locking part 22 can be configured as a circular ring, and the central through hole 224 can have a size and shape that matches the end cover 25. The outer ring of the end cover 25 is provided with a circle of protrusions 251, and the inner wall of the central through hole 224 is provided with a circle of step grooves 225. The step groove 225 and the protrusion 251 are adapted to each other, so that the step groove 225 is axially limited by the protrusion 251. The step groove 225 will be limited between the protrusion 251 and the end face of the filter element body 21, and a certain gap will be left between the step groove 225 and the protrusion 251 and between the step groove 225 and the end face of the filter element body 21 to ensure that the locking part 22 has sufficient rotation space.

[0063] The present application provides a filter element device that is easy to disassemble and reliably connect. The filter element assembly 2 can be extended into the installation cavity 10 along the axial direction. The user does not need to rotate the heavy filter element body 21, but can lock or unlock by rotating the locking part 22 on the filter element body 21, thereby connecting or decoupling the filter element assembly 2 with the fixing seat 1. The present application provides a locking part 22 that is rotatably connected to the filter element body 21, thereby making the user's operation easier and reducing the difficulty of disassembly and assembly.

[0064] When the locking portion 22 is in the locked position, the locking portion 22 will not move in the axial direction under the limiting action of the blocking portion 113. However, during the operation of the water purification device, with the impact of the water flow and the vibration of the device during operation, the locking portion 22 may automatically rotate to the unlocked position, thereby causing the axial limit to fail, the locking structure of the filter element assembly 2 to be disengaged, and the filter element assembly 2 may be disengaged from the fixing seat 1. In addition, when installing the filter element assembly 2, the user cannot confirm at which angle the locking portion 22 is rotated to be in place, so the user may mistakenly believe that the locking portion 22 has been securely installed before it is rotated to the locked position, thereby causing a water leakage accident after the water purification device is turned on.

[0065] To solve the above problems, refer to Figure 2 and Figure 8 In the present application, a positioning portion 231 is movably provided on the locking portion 22, and a limiting portion is provided on the filter element body 21. The positioning portion 231 is configured to be able to move to a position that cooperates with the limiting portion to limit the rotational freedom of the locking portion 22 relative to the filter element body 21. The locking portion 22 can move to a position separated from the limiting portion to release the rotational freedom of the locking portion 22 relative to the filter element assembly 2. When the locking portion 22 is installed in place, that is, when it is rotated to the locked position, the positioning portion 231 on the locking portion 22 can move to a position that cooperates with the limiting portion, so that the locking portion 22 is fixed in the locked position by the positioning portion 231. The locking portion 22 will not automatically rotate under the action of external forces such as water flow impact, thereby enhancing the reliability of the installation of the filter element assembly 2. The limiting portion is provided on the filter element body 21, thereby utilizing the large weight of the filter element body 21 itself to prevent the locking portion 22 from moving due to external vibration or water flow vibration, thereby avoiding the unlocking of the filter element assembly 2 and the fixing seat 1. In addition, only when the positioning portion 231 moves to the position where the limiting portion cooperates, can it be proved that the locking portion 22 is installed in place, so that it is convenient for the user to judge whether the filter element assembly 2 is installed in place. The user will not misjudge the installation state when it is not installed in place, thereby avoiding the situation of water leakage due to incomplete installation.

[0066] In one embodiment of the present application, reference Figure 2 , Figure 8 and Fig.11 The filter element assembly 2 includes a handle 23 hinged on the locking portion 22, such as Figure 8 As shown, the positioning portion 231 is disposed on the handle 23 and is configured to move with the handle 23 to engage with or separate from the limiting portion. Fig.11 As shown, the filter element assembly 2 further includes a hinge shaft 24 , and the handle 23 is rotatably connected to the locking portion 22 via the hinge shaft 24 .

[0067] In a specific embodiment of the present application, the rotation axis of the locking portion 22 relative to the filter element body 21 is configured to be coaxial with the central axis of the filter element body 21, and the rotation axis of the handle 23 is configured to be perpendicular to the rotation axis of the locking portion 22. When the handle 23 rotates a certain angle relative to the locking portion 22, the handle 23 can be tilted relative to the end surface of the locking portion 22, so that it is convenient for the user to hold the handle 23. The user can drive the locking portion 22 to rotate by holding the handle 23, and can also drive the filter element assembly 2 to move in the installation cavity 10 along the axial direction by holding the handle 23.

[0068] In one embodiment of the present application, reference Figure 6 , Figures 8 to 10 The end surface of the locking portion 22 is provided with a groove 221, and the groove 221 is configured to match the handle 23. Figure 8 As shown, the handle 23 can be constructed as a semicircular ring. Figure 6 As shown, the groove 221 can be constructed as a semicircular ring groove adapted to the handle 23. Fig. 9 and Fig.10 As shown, when the positioning portion 231 moves to cooperate with the limiting portion, the handle 23 is configured to be located in the groove 221. When the handle 23 rotates relative to the locking portion 22 to a position embedded in the groove 221, the positioning portion 231 cooperates with the limiting portion, thereby limiting the rotational freedom of the locking portion 22 relative to the filter element body 21, and the locking portion 22 is fixed in the locking position by the positioning portion 231, thereby enhancing the reliability of the installation of the filter element assembly 2.

[0069] It is understandable that, since the rotation axis of the handle 23 is constructed to be perpendicular to the rotation axis of the locking portion 22, the direction of the force driving the handle 23 to rotate and the direction of the force driving the locking portion 22 to rotate are perpendicular to each other. The vibration generated by the water purification equipment during operation and the direction of the impact force of the water flow on the filter element assembly 2 usually do not change significantly. The locking portion 22 has a tendency to rotate under the action of the above external force, and the handle 23 will not automatically rotate to disengage from the groove 221 under the action of the above force, thereby achieving the fixation of the locking portion 22.

[0070] In particular, in one application scenario, the filter element assembly 2 can be inserted into the installation cavity 10 in a vertical posture, and the end faces of the locking portion 22 and the handle 23 are facing upward. The handle 23 can be stably maintained in the groove 221 under the action of gravity, and the force generated during the operation of the water purification equipment cannot drive the handle 23 to rotate, and the positioning portion 231 can be stably matched with the limiting portion. Only when the user actively pulls up the handle 23, the handle 23 can be separated from the groove 221, and drive the positioning portion 231 to be separated from the limiting portion, thereby releasing the rotational freedom of the locking portion 22 relative to the filter element assembly 2.

[0071] In one embodiment of the present application, reference Figures 8 to 10 , the handle 23 is hinged on the outside of the locking part 22, and the limiting part is configured as a positioning groove 211 provided on the filter element body 21. The locking part 22 is provided with a through hole 222 adapted to the limiting part, and the positioning part 231 is configured to extend through the through hole 222 to cooperate with the positioning groove 211 during the movement of the handle 23, so as to fix the locking part 22 in the locked position. Specifically, the positioning part 231 can be a columnar structure provided on the handle 23, and the through hole 222 adapted to the diameter of the positioning part 231 can be provided on the bottom wall of the groove 221. When the handle 23 is located inside the groove 221, the positioning part 231 can pass through the through hole 222. The positioning groove 211 can be a blind hole set on the filter element body 21. When the locking part 22 is rotated to the locking position and the handle 23 is located in the groove 221, the positioning part 231 can extend into the positioning groove 211 after passing through the through hole 222, thereby fixing the locking part 22 in the locking position.

[0072] It is understandable that when the locking portion 22 has not yet rotated to the locked position, if the user may mistakenly think that it has been rotated to the right position, the user will rotate the handle 23 and try to completely embed the handle 23 into the groove 221. However, since the locking portion 22 has not yet rotated to the right position, the through hole 222 has not yet rotated to the position that matches the positioning groove 211, and the positioning portion 231 on the handle 23 cannot extend into the positioning groove 211, thereby making it impossible for the handle 23 to be placed in place. In this way, the user can be reminded that the locking portion 22 has not yet rotated to the right position and needs to continue to rotate. The user will not misjudge the installation state when it is not yet installed in place, thereby avoiding the situation of water leakage due to incomplete installation.

[0073] In one embodiment of the present application, the opposite ends of the handle 23 are constructed to be hinged at the opposite ends of the groove 221, and the positioning portion 231 is arranged on the handle 23 at a position adjacent to the hinge point of the handle 23. Two positioning portions 231 are arranged, and two through holes 222 on the locking portion 22 and two positioning grooves 211 on the filter element body 21 are also arranged respectively. The two positioning portions 231 are respectively located at positions adjacent to the hinge point on the handle 23, the two through holes 222 are respectively located at positions adjacent to the opposite ends on the bottom wall of the groove 221, and the two positioning grooves 211 are respectively located at corresponding positions on the filter element body 21. The positioning portion 231 is arranged on the handle 23 at a position adjacent to the hinge point of the handle 23, so that there is no protruding positioning portion 231 in the gripping part in the middle of the handle 23, thereby improving the hand feel of the user gripping the handle 23. The two positioning portions 231, the through hole 222 and the positioning groove 211 can be axially symmetrically arranged with the axis of the filter element assembly 2 as the axis, so that the positioning portion 231 can form a symmetrical two-point fixation, thereby improving the stability of the fixed locking portion 22 and further enhancing the reliability of the installation of the filter element assembly 2.

[0074] Application scenario 1

[0075] In a household scenario, a user uses a water purification device to filter and purify tap water. After using it for a period of time, due to a large amount of dirt attached to the filter element assembly 2, the user needs to manually replace the filter element assembly 2.

[0076] First, the old filter element assembly 2 needs to be removed from the fixing seat 1. The user needs to rotate the handle 23 on the end face of the filter element assembly 2 to a tilted position, and then grasp the handle 23 and start to rotate it. The handle 23 can drive the locking portion 22 to rotate to an unlocked position. Specifically, the locking member 223 on the locking portion 22 can be disengaged from the snap-fit ​​groove 11 on the fixing seat 1, so that the filter element assembly 2 is not restricted by the blocking portion 113 on the snap-fit ​​groove 11, and the filter element assembly 2 can move freely in the axial direction. The user can grasp the handle 23 and apply force along the axial direction of the filter element assembly 2 to pull the filter element assembly 2 out of the installation cavity 10.

[0077] After that, the new filter element assembly 2 needs to be installed to the fixing seat 1. The user can put the filter element assembly 2 into the installation cavity 10 from the installation port 101. Specifically, a limiting rib 212 is provided on the filter element body 21, and a limiting groove 12 is provided on the inner wall of the installation cavity 10, and the limiting rib 212 and the limiting groove 12 both extend along the axial direction of the filter element body 21. During the installation process, the limiting rib 212 and the limiting groove 12 are matched with each other, and the user can only install the filter element assembly 2 along the axial direction, and the filter element assembly 2 will not rotate in the installation cavity 10.

[0078] When the end face of the filter element body 21 contacts the inner wall of the installation cavity 10, the user can grasp the handle 23 and start to rotate, and the handle 23 can drive the locking part 22 to rotate to the locking position. Specifically, the locking member 223 on the locking part 22 can move through the through groove 110 to the position corresponding to the first end 111 of the locking groove 11, that is, the position blocked by the blocking part 113. The blocking part 113 can axially limit the filter element assembly 2, thereby preventing the filter element assembly 2 from moving in the axial direction. The user does not need to rotate the heavy filter element body 21, but can lock or unlock by rotating the locking part 22 on the filter element body 21, which is easy to operate and reduces the difficulty of disassembly and assembly.

[0079] After the locking part 22 is installed in place, the user can rotate the handle 23 to be located in the groove 221, and the positioning part 231 on the handle 23 extends into the positioning groove 211 on the filter element body 21 after passing through the through hole 222 on the bottom wall of the groove 221, thereby fixing the locking part 22 in the locked position. The positioning groove 211 is located on the filter element body 21, thereby using the large weight of the filter element body 21 itself to prevent the locking part 22 from moving due to external vibration or water flow vibration, thereby avoiding the filter element assembly 2 from being unlocked from the fixing seat 1. The locking part 22 will not automatically rotate under the action of external forces such as water flow impact, thereby enhancing the reliability of the installation of the filter element assembly 2.

[0080] Application scenario 2

[0081] When the user manually installs the filter element assembly 2, he first puts the filter element assembly 2 into the installation cavity 10 from the installation opening 101, and then grasps the handle 23 and drives the locking portion 22 to rotate toward the locking position. When the user thinks that the locking portion 22 has been rotated to the right position, the user will rotate the handle 23 and try to completely insert the handle 23 into the groove 221. However, since the locking portion 22 has not been rotated to the right position, the through hole 222 has not been rotated to the position that matches the positioning groove 211, and the positioning portion 231 on the handle 23 cannot extend into the positioning groove 211, so that the handle 23 cannot be placed in place.

[0082] The user can thus know that the locking portion 22 has not yet been rotated to the installation position, and continue to rotate the locking portion 22. When the locking portion 22 is rotated to the locking position, the user can successfully insert the handle 23 completely into the groove 221, thereby confirming that the locking portion 22 has been rotated to the right position. Only when the positioning portion 231 moves to the position where the limiting portion cooperates can it be proved that the locking portion 22 is installed in place, so that it is convenient for the user to judge whether the filter element assembly 2 is installed in place. The user will not misjudge the installation status when it is not installed in place, thereby avoiding the situation of water leakage due to incomplete installation.

[0083] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The optional embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A filtering device, characterized in that: include: A fixing seat, wherein the fixing seat has a mounting cavity; A filter element assembly, the filter element assembly is configured to be detachably connected to the fixing seat; the filter element assembly comprises a filter element body, and a locking portion rotatably connected to the filter element body, the locking portion being configured to be rotatable relative to the filter element body to a locking position for locking with the fixing seat and an unlocking position for unlocking with the fixing seat; Among them, a positioning part is movably provided on the locking part, and a limiting part is provided on the filter element body; the positioning part is configured to be able to move to a position cooperating with the limiting part to limit the rotational freedom of the locking part relative to the filter element body; the locking part can move to a position separated from the limiting part to release the rotational freedom of the locking part relative to the filter element assembly.

2. The filtering device according to claim 1, characterized in that The filter element assembly further comprises a handle hinged on the locking portion, the positioning portion is arranged on the handle and is configured to move with the handle to engage with or separate from the limiting portion.

3. The filtering device according to claim 2, characterized in that The rotation axis of the locking portion relative to the filter element body is configured to be coaxial with the central axis of the filter element body; the rotation axis of the handle is configured to be perpendicular to the rotation axis of the locking portion.

4. The filtering device according to claim 2, characterized in that: The end surface of the locking portion is provided with a groove, and the groove is configured to be matched with the handle; when the positioning portion moves to cooperate with the limiting portion, the handle is configured to be located in the groove.

5. The filtering device according to claim 3, characterized in that: The handle is hinged on the outside of the locking portion, and the limiting portion is constructed as a positioning groove arranged on the filter element body; the locking portion is provided with a through hole adapted to the limiting portion; the positioning portion is constructed to extend through the through hole to cooperate with the positioning groove during the movement of the handle to fix the locking portion in a locked position.

6. The filtering device according to claim 5, characterized in that The opposite ends of the handle are configured to be hinged at the opposite ends of the groove; and the positioning portion is disposed on the handle at a position adjacent to the hinge point of the handle.

7. The filtering device according to claim 1, characterized in that: The locking portion is provided with a locking component, and the fixing seat is provided with a matching component; the locking portion is configured to drive the locking component to move to match or disengage with the matching component during the process of rotating relative to the filter element body.

8. The filtering device according to claim 7, characterized in that The locking component is constructed to extend radially outward from the circumferential side wall of the locking portion; the fixing seat is provided with an installation opening for the filter element body to penetrate into the installation cavity, and the matching component is a locking groove arranged on the inner wall of the installation opening; when the locking portion is rotated to the locking position, the locking component is constructed to be located in the locking groove; when the locking portion is rotated to the unlocking position, the locking component is disengaged from the locking groove.

9. The filtering device according to claim 8, characterized in that The locking groove is constructed to extend along the circumferential direction of the inner wall of the mounting port, and the two opposite ends of the locking groove are respectively recorded as the first end and the second end; a through groove is axially arranged on the end surface of the fixed seat and penetrates to the first end of the locking groove; during the axial movement of the filter element assembly, the locking component is constructed to move through the through groove to a position corresponding to the first end of the locking groove, and during the rotation of the locking part, it moves from the first end of the locking groove to a locking position corresponding to the second end.

10. The filtering device according to claim 9, characterized in that The two engaging grooves and the two locking components are respectively provided; the two engaging grooves and the two locking components are respectively distributed on the inner wall of the installation opening and the circumferential side wall of the locking part symmetrically with the axis of the filter element body as the axis.

11. The filtering device according to claim 1, characterized in that: A first limiting portion extending along the axis of the filter element body is arranged on the inner wall of the installation cavity; a second limiting portion guiding and cooperating with the first limiting portion is arranged on the outer wall of the filter element body; the first limiting portion and the second limiting portion are constructed to limit the axial movement of the filter element assembly in the installation cavity.

12. The filtering device according to claim 11, characterized in that One of the first limiting portion and the second limiting portion is configured as a limiting groove, and the other is configured as a limiting rib; the limiting rib is configured to cooperate with the limiting groove in a guiding manner.

13. The filtering device according to claim 1, characterized in that: The filter element assembly also includes an end cover connected to the filter element body, the locking portion is constructed to be located between the end cover and the filter element body, and a gap is provided between the end cover and the filter element body for the locking portion to rotate relative to the filter element body and the end cover.

14. The filtering device according to claim 13, characterized in that A central through hole is arranged at the center of the locking portion, and a step groove is arranged on the inner wall of the central through hole; the end cover has a protrusion extending in the circumferential direction; the protrusion is constructed to be pressed on the step groove to limit the locking portion on the filter element body.

15. A water purification device, characterized in that: include: A shell body, wherein a water inlet pipe and a water outlet pipe are arranged in the shell body; According to any one of claims 1 to 14, the filter device is configured to filter an external water source from the water inlet pipe, and is configured to discharge the filtered clean water through the water outlet pipe.

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