A filter device

Abstract

The utility model discloses a filter device, include: shell body, form having accommodation space in the shell body, the middle part of one end of shell body has the installation port, and the outer periphery of one end of shell body has the first surrounding wall, and the first surrounding wall has established first bayonet along the radial, outer filter core, and the outer filter core sets up in the accommodation space, and the middle part of outer filter core forms has the accommodation channel, inner filter core, and the inner filter core sets up in the accommodation channel, inner casing, and the inner casing detachably sets up at the installation port, and the outer periphery of one end of inner casing forms has the second surrounding wall, and the second surrounding wall has established second bayonet along the radial, locking piece, and the end of locking piece passes first bayonet and second bayonet and sets up in proper order. Through the application of the utility model, provide a kind of filter device suitable for the independent replacement of inner filter core, and the matching of locking piece and first bayonet on shell body and second bayonet on inner casing realize the locking or unlocking of inner casing, to form or relieve the location of inner filter core more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a filtration device. Background Technology

[0002] Currently, as people have increasingly higher requirements for the hygiene of drinking water, water purifiers are being used more and more widely in various occasions. Traditional water purifiers generally consider using a composite filter structure as the core functional component of their filtration. This composite filter structure commonly includes an inner filter and an outer filter arranged in a nested manner, as well as a shell structure configured on the outside of the outer filter.

[0003] However, the installation method of the inner filter element in traditional composite filter structures is mostly a non-removable structure. Even if the inner and outer filter elements are directly fixed inside the shell, this greatly increases the user's filter usage cost. Therefore, some existing technologies have further considered the design of separate disassembly of the inner filter element, so that the inner filter element can be removed from the shell for replacement independently. For example, the existing Chinese authorized patent CN202021721222.X considers designing a spring-based snap-fit ​​structure at the end of the filter element to achieve locking and unlocking between it and the shell, so that the inner filter element can be replaced. However, such an inner filter element replacement structure is relatively complex, occupies more internal space in the water purifier, and is still inconvenient for users to operate themselves. In particular, its production cost is also relatively high. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of this utility model is to provide a filtration device, comprising:

[0005] The outer shell has an accommodating space formed inside it. One end of the outer shell has a mounting port at the middle, which is connected to the accommodating space. One end of the outer shell has a first enclosure wall on its outer periphery, and the first enclosure wall has a first snap-fit ​​opening in the radial direction.

[0006] An external filter element is disposed within the accommodating space, and an accommodating channel is formed in the middle of the external filter element;

[0007] An inner filter element is disposed within the receiving channel and is positioned directly opposite the mounting port.

[0008] An inner shell is detachably disposed at the mounting port, and a second enclosure is formed on the outer periphery of one end of the inner shell, the second enclosure having a second slot radially provided;

[0009] A locking element, the ends of which pass through the first bayonet and the second bayonet in sequence.

[0010] In another preferred embodiment, both the first enclosure and the second enclosure are arranged in a ring shape, with the inner edge of the first enclosure matching the outer edge of the second enclosure.

[0011] In another preferred embodiment, the first enclosure is provided with two first latches in sequence along the circumference, and the second enclosure is provided with two second latches in sequence along the circumference, each of the first latches matching a second latch, and the locking member has two ends, each of the ends matching a first latch and a second latch.

[0012] In another preferred embodiment, the locking element includes an arc-shaped element and two locking blocks, the two locking blocks being fixedly disposed at both ends of the arc-shaped element, the outer edge of the arc-shaped element matching the inner edge of the second enclosure, and each locking block having an end formed thereon.

[0013] In another preferred embodiment, each of the card blocks is arranged to protrude radially outward along the arcuate member.

[0014] In another preferred embodiment, the outer contour of each of the card blocks is set to gradually decrease in the radially outward direction.

[0015] In another preferred embodiment, the first enclosure is provided with four first latches in sequence along the circumference, the second enclosure is provided with four second latches in sequence along the circumference, and the number of locking elements is two.

[0016] In another preferred embodiment, it further includes: a first end cap disposed at one end of the inner filter element, the first end cap being disposed between the inner filter element and the inner housing.

[0017] In another preferred embodiment, a third enclosure is formed at the other end of the inner housing, the outer edge of the third enclosure matching the inner edge of the mounting opening, and the first end cap is disposed within the third enclosure.

[0018] In another preferred embodiment, it further includes: an outer cover, the inner side of which is formed with an annular groove, the annular groove having an outer annular wall and an inner annular wall, the outer annular wall matching the first enclosure wall, and the inner annular wall contacting the inner side of the locking member.

[0019] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art:

[0020] By applying this utility model, a filtration device suitable for independent replacement of the inner filter element is provided. The locking or unlocking of the inner shell is achieved by matching the locking member with the first snap on the outer shell and the second snap on the inner shell, so as to conveniently form or release the restriction of the inner filter element. At the same time, the installation of the locking member can be further coordinated under the restriction of the outer cover. This utility model has a simple structure, is easy to operate, and has a low production cost. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of a filtration device according to the present invention;

[0022] Figure 2 This is an exploded view of a filtration device according to the present invention;

[0023] Figure 3 This is a partial schematic diagram of a filtration device according to the present invention.

[0024] In the attached image:

[0025] 1. Outer shell; 2. Accommodation space; 3. Mounting port; 4. First enclosure wall; 5. First bayonet; 6. Outer filter element; 7. Accommodation channel; 8. Inner filter element; 9. Inner shell; 10. Second enclosure wall; 11. Second bayonet; 12. Locking element; 13. Arc-shaped element; 14. Locking block; 15. First end cap; 16. Third enclosure wall; 17. Outer cap; 18. Annular groove; 19. Second end cap; 20. Connector; 21. Outlet; 22. Fourth enclosure wall; 23. Upper end cap; 24. Lower end cap. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0029] like Figures 1 to 3 The image shows a preferred embodiment of a filtration device, comprising: an outer shell 1, with a receiving space 2 formed within the outer shell 1; a mounting port 3 at the middle of one end of the outer shell 1, the mounting port 3 communicating with the receiving space 2; a first enclosure wall 4 at the outer periphery of one end of the outer shell 1, the first enclosure wall 4 having a first latch 5 radially formed therein; an outer filter element 6, disposed within the receiving space 2, with a receiving channel 7 formed at the middle of the outer filter element 6; an inner filter element 8, disposed within the receiving channel 7, the inner filter element 8 being positioned directly opposite the mounting port 3; an inner housing 9, detachably disposed at the mounting port 3, a second enclosure wall 10 at the outer periphery of one end of the inner housing 9, the second enclosure wall 10 having a second latch 11 radially formed therein; and a locking member 12, the end of the locking member 12 passing sequentially through the first latch 5 and the second latch 11. Furthermore, when it is necessary to replace the inner filter element 8, the locking member 12 can be disengaged from the first bayonet 5 and the second bayonet 11, thereby releasing the lock between the outer shell 1 and the inner shell 9. At this time, the inner shell 9 is allowed to detach from the mounting port 3. After detachment, the receiving channel 7 is opened, allowing the inner filter element 8 to be removed. After replacing the new inner filter element 8, it is reinserted into the receiving channel 7, and then the inner shell 9 is installed in the mounting port 3, with the first bayonet 5 and the second bayonet 11 facing each other. Then, the locking member 12 is reinserted into the first bayonet 5 and the second bayonet 11, thus completing the replacement of the entire inner filter element 8.

[0030] Furthermore, as a preferred embodiment, the outer casing 1 is configured in a cylindrical shape.

[0031] Furthermore, as a preferred embodiment, the radial dimension of the inner filter element 8 is at least smaller than the inner diameter of the mounting port 3.

[0032] Furthermore, as a preferred embodiment, the inner diameter of the mounting port 3 is smaller than the inner wall of the first enclosure wall 4.

[0033] Furthermore, as a preferred embodiment, the first enclosure 4 is disposed around the outer periphery of the mounting opening 3.

[0034] Furthermore, in a preferred embodiment, both the first enclosure 4 and the second enclosure 10 are arranged in a ring shape, with the inner edge of the first enclosure 4 matching the outer edge of the second enclosure 10. Furthermore, the first bayonet 5 is radially through-holes in the first enclosure 4, and the second bayonet 11 is radially through-holes in the second enclosure 10.

[0035] Furthermore, as a preferred embodiment, the first enclosure 4 and the outer shell 1 are integrally formed, and the second enclosure 10 and the inner shell 9 are integrally formed.

[0036] Furthermore, as a preferred embodiment, the first enclosure 4 is provided with two first latches 5 in sequence along the circumference, and the second enclosure 10 is provided with two second latches 11 in sequence along the circumference. Each first latch 5 is matched with a second latch 11. The locking member 12 has two ends, each end of which is matched with a first latch 5 and a second latch 11.

[0037] Furthermore, in a preferred embodiment, the locking member 12 includes an arc-shaped member 13 and two locking blocks 14. The two locking blocks 14 are respectively fixedly disposed at both ends of the arc-shaped member 13. The outer edge of the arc-shaped member 13 matches the inner edge of the second enclosure 10, and each locking block 14 has an end formed thereon. Further, by using the arc-shaped member 13 as the base of the entire locking member 12, two ends are provided simultaneously, that is, the two locking blocks 14 correspond to two pairs of matching first latches 5 and second latches 11 respectively. After the locking member 12 is installed in place, the outer edge of the arc-shaped member 13 fits against the inner edge of the second enclosure 10.

[0038] Furthermore, as a preferred embodiment, the arc-shaped component 13 is provided with an arc-shaped curved strip structure. The arc-shaped component 13 preferably has a certain deformation capability so as to adjust the position of the locking block 14 and insert it into the first locking slot 5 and the second locking slot 11.

[0039] Furthermore, in a preferred embodiment, each latch 14 is provided to protrude outward along the radial direction of the arc-shaped member 13. Further, this radial direction is preferably the radial direction of the circle containing the arc formed by the arc-shaped member 13, or it can also be considered as the radial direction of the second enclosure wall 10.

[0040] Furthermore, as a preferred embodiment, the outer contour of each locking block 14 gradually decreases in the radially outward direction. Furthermore, the locking block 14 is preferably configured with a pyramidal structure, and its outer contour can preferably be considered as the outer contour of a cross-section perpendicular to the radial direction, to facilitate insertion into the first locking slot 5 and the second locking slot 11.

[0041] Furthermore, as a preferred embodiment, the inner contour of the first bayonet 5 is larger than the inner contour of the second bayonet 11, so as to adapt to the change in the outer contour of the card block 14.

[0042] Furthermore, in a preferred embodiment, the first enclosure 4 is provided with four first latches 5 in sequence along the circumference, the second enclosure 10 is provided with four second latches 11 in sequence along the circumference, and the number of locking members 12 is two. Further, the two locking members 12 are preferably disposed close to opposite sides of the first enclosure 4, that is, the two locking members 12 are symmetrically disposed with respect to the center of the inner shell 9.

[0043] Furthermore, in a preferred embodiment, the four first bayonets 5 are equidistantly arranged, and the four second bayonets 11 are equidistantly arranged.

[0044] Furthermore, as a preferred embodiment, it further includes: a first end cap 15, which is disposed at one end of the inner filter element 8 and between the inner filter element 8 and the inner housing 9. More preferably, the first end cap 15 forms a connection with the inner filter element 8, that is, during the replacement of the inner filter element 8, it acts as an integral part of the inner filter element 8, and it also provides indirect contact between the inner filter element 8 and the inner housing 9.

[0045] Furthermore, in a preferred embodiment, a third enclosure wall 16 is formed at the other end of the inner housing 9. The outer edge of the third enclosure wall 16 matches the inner edge of the mounting port 3, and the first end cap 15 is disposed within the third enclosure wall 16. Furthermore, the third enclosure wall 16 provides accommodating space for the first end cap 15 and the upper portion of the inner filter element 8, thereby providing axial and radial limiting for the inner filter element 8 by the inner housing 9.

[0046] Furthermore, as a preferred embodiment, the third enclosure 16 is arranged in a ring shape.

[0047] Furthermore, as a preferred embodiment, the first end cap 15 can form a tight contact or connection with the third enclosure wall 16, so that when the inner housing 9 is removed, the first end cap 15 and the inner filter element 8 can be moved together.

[0048] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0049] Based on the above, this utility model also has the following embodiments:

[0050] In a further embodiment of this utility model, it further includes: an outer cover 17, the inner side of which is formed an annular groove 18. The annular groove 18 has an outer annular wall and an inner annular wall. The outer annular wall matches the first enclosure wall 4, and the inner annular wall contacts the inner side of the locking member 12. Furthermore, the outer cover 17 serves two purposes: firstly, it provides a decorative shielding at one end of the outer housing 1; secondly, the annular groove 18 provides a limiting position for the locking member 12, thereby ensuring that the locking member 12 will not disengage from the first latch 5 and the second latch 11 after the outer cover 17 is installed. Preferably, when the inner filter element 8 needs to be replaced, the outer cover 17 can be removed first, thus facilitating the removal of the locking member 12.

[0051] In a further embodiment of the present invention, the inner ring wall preferably abuts against the surface of the arc-shaped member 13 on the side away from the locking block 14.

[0052] In a further embodiment of this utility model, the thickness of the arc-shaped member 13 is preferably the distance from the inner ring wall to the inner side of the first surrounding wall 4.

[0053] In a further embodiment of the present invention, the outer ring wall of the outer cover 17 and the outer periphery of the first enclosure wall 4 can be fixed by means of snap-fit ​​or threaded connection, so as not to fall off the outer shell 1.

[0054] In a further embodiment of the present invention, the annular groove 18 is formed by a downward concave structure at the inner top of the outer cover 17.

[0055] In a further embodiment of the present invention, it further includes: a second end cap 19, one end of which is sleeved on the other end of the inner filter element 8.

[0056] In a further embodiment of this utility model, the other end of the second end cap 19 has a connector 20, and the other end of the outer casing 1 has a water outlet 21. A fourth enclosure wall 22 extends inward from the water outlet 21 of the outer casing 1, and the outer edge of the connector 20 matches the fourth enclosure wall 22. Furthermore, the fourth enclosure wall 22 serves two purposes: firstly, it provides a snap-fit ​​installation for the connector 20, and secondly, it provides axial and radial limiting for the lower end of the inner filter element 8.

[0057] In a further embodiment of this utility model, a sealing ring is provided on the outer side of the connector 20.

[0058] In a further embodiment of this utility model, a sealing ring is fitted on the outer side of the water outlet 21.

[0059] In a further embodiment of this utility model, an upper end cap 23 and a lower end cap 24 are respectively provided at both ends of the outer filter element 6.

[0060] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter device, characterized in that include: The outer casing has an accommodating space within it. One end of the outer casing has a mounting opening at its center, which communicates with the accommodating space. One end of the outer casing has a first surrounding wall on its outer periphery, with a first latch formed radially along the first surrounding wall. An outer filter element is disposed within the accommodating space, and a accommodating channel is formed at its center. An inner filter element is disposed within the receiving channel and is positioned directly opposite the mounting port. An inner housing is detachably disposed at the mounting port. A second enclosure is formed on the outer periphery of one end of the inner housing, and a second latch is provided radially on the second enclosure. A locking member is provided with its end passing through the first latch and the second latch in sequence.

2. The filter device of claim 1, wherein, Both the first enclosure and the second enclosure are arranged in a ring shape, with the inner edge of the first enclosure matching the outer edge of the second enclosure.

3. The filter device of claim 1, wherein, The first enclosure has two first latches arranged in sequence along the circumference, and the second enclosure has two second latches arranged in sequence along the circumference. Each first latch is matched with a second latch. The locking member has two ends, each end being matched with a first latch and a second latch.

4. The filter device of claim 3, wherein, The locking component includes an arc-shaped component and two locking blocks. The two locking blocks are respectively fixedly disposed at both ends of the arc-shaped component. The outer edge of the arc-shaped component matches the inner edge of the second enclosure wall. Each locking block has an end portion formed thereon.

5. The filter device of claim 4, wherein, Each of the aforementioned blocks is arranged to protrude outward along the radial direction of the arc-shaped member.

6. The filter device of claim 5, wherein, The outer contour of each card block gradually decreases in the radial outward direction.

7. The filter device of claim 1, wherein, The first enclosure has four first latches arranged in sequence along its circumference, the second enclosure has four second latches arranged in sequence along its circumference, and the number of locking components is two.

8. The filter device of claim 1, wherein, Also includes: A first end cap is disposed at one end of the inner filter element and between the inner filter element and the inner housing.

9. The filter device of claim 8, wherein, A third enclosure is formed at the other end of the inner shell, the outer edge of the third enclosure matches the inner edge of the mounting port, and the first end cap is disposed inside the third enclosure.

10. The filter device of claim 1, wherein, Also includes: The outer cover has an annular groove formed on its inner side. The annular groove has an outer ring wall and an inner ring wall. The outer ring wall matches the first enclosure wall, and the inner ring wall contacts the inner side of the locking member.

Images