Secondly sealed filter assembly and device with water purification function

Abstract

The utility model discloses a filter assembly of second sealing and equipment with water purification function relates to water purifier technical field, filter assembly of second sealing includes top cover, filter head, filter core, fixed link, fastener, barrel body and bottom cover, and bottom cover is equipped with first bottom cover perforation, and filter head is equipped with filter head perforation, and filter assembly of second sealing still includes isolation pipe, and the upper and lower ends of isolation pipe are connected with filter head, bottom cover respectively and seal cooperation, and fixed link passes filter head perforation, isolation pipe and first bottom cover perforation in proper order, and fixed link is connected with bottom cover and seals cooperation, or, fixed link passes filter head perforation, first bottom cover perforation in proper order, and fixed link seals cooperation with filter head. Its benefit is: solved the filter assembly without the filter head inside the perforation and the water purifier with fixed link matched use and the second sealing problem between raw water and purified water, expanded the application range of filter assembly, and brought more consumer experience and benefit for the user.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, and more specifically, to a filter assembly with a second seal and a device with water purification function. Background Technology

[0002] Currently, a type of water purifier on the market features a fixed rod with threads. The fixed rod passes through a hole in the center of the filter assembly. One end of the fixed rod is screwed into the threaded hole of the filter cap, and a nut is then tightened onto the threaded end of the fixed rod. This secures the filter assembly to the filter cap of the water purifier, after which the filter bottle is assembled. Commonly used filter elements in this type of water purifier include melt-blown cotton filters, carbon rod filters, pleated cotton filters, ceramic filters, and various composite filters.

[0003] However, filter assemblies with integral filter heads have a single, non-perforated interior, meaning the retaining rod cannot pass through and a secondary seal cannot be achieved. Therefore, this type of filter assembly cannot be used in water purifiers with retaining rods.

[0004] Therefore, it is necessary to improve the filter assembly with no perforations inside the filter head, and solve the problem of using the filter assembly with no perforations inside the filter head with a water purifier with a fixing rod and achieving a second seal. This technical solution is proposed. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To address the above problems, this utility model provides the following technical solution:

[0007] The second-sealed filter assembly includes a top cover, a filter head, a filter element, a fixing rod, fasteners, a cylinder body, and a bottom cover. The bottom cover has a first bottom cover perforation, and the filter head has a filter head perforation. The second-sealed filter assembly also includes an isolation tube, the upper and lower ends of which are connected to and sealed to the filter head and the bottom cover, respectively. The fixing rod passes through the filter head perforation, the isolation tube, and the first bottom cover perforation in sequence, and is connected to and sealed to the bottom cover; or, the fixing rod passes through the filter head perforation and the first bottom cover perforation in sequence, and is sealed to the filter head.

[0008] In one embodiment, a first isolation tube groove is provided at the lower center of the filter head, and a second isolation tube groove is provided at the upper center of the bottom cover. The first isolation tube groove and the second isolation tube groove are respectively fitted with the upper and lower ends of the isolation tube and sealed together. A second bottom cover through hole is provided on the lower outer side of the bottom cover.

[0009] In one embodiment, the filter assembly with a second seal further includes a first sealing element. A first bottom cover groove is provided between the first bottom cover perforation and the second bottom cover perforation. The first bottom cover groove is fitted with the first sealing element. The upper and lower ends of the fixing rod are provided with fixing rod threads. The fastener is provided with a sealing pressure plate and a sealing handle. The fixing rod passes through the filter core head perforation, the isolation tube, the first bottom cover perforation, and the first sealing element in sequence. The fixing rod thread above the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread below the fixing rod is connected and fixed with the fastener. The fastener and the first sealing element fitted on the first bottom cover groove are tightly abutted and sealed.

[0010] In one embodiment, an annular second bottom cover groove is provided on the inner ring wall of the first bottom cover perforation. The second bottom cover groove is equipped with a second sealing element. The upper and lower ends of the fixing rod are provided with fixing rod threads. The fastener is provided with a sealing pressure plate. The fastener is also provided with a closed handle or a perforated handle. The fixing rod passes through the filter head perforation, the isolation tube, the first bottom cover perforation and the second sealing element in sequence. The fixing rod thread above the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread below the fixing rod is connected and fixed with the fastener. The fixing rod and the second sealing element assembled on the second bottom cover groove are tightly abutted and sealed.

[0011] In one embodiment, an annular second bottom cover groove is provided on the inner ring wall of the first bottom cover perforation. The second bottom cover groove is fitted with a second sealing element. The entire length of the fixing rod is provided with a fixing rod thread. The filter assembly for the second sealing also includes a screw sleeve. The screw sleeve has a perforated screw sleeve thread in the middle. The screw sleeve is assembled with the fixing rod through the screw sleeve thread and the fixing rod thread. The fastener is provided with a sealing pressure plate. The fastener is also provided with a closed handle or a perforated handle. The fixing rod passes through the filter core head perforation, the isolation tube, the first bottom cover perforation, and the second sealing element in sequence. The fixing rod thread above the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread below the fixing rod is connected and fixed with the fastener. The screw sleeve and the second sealing element fitted on the second bottom cover groove are tightly abutted and sealed.

[0012] In one embodiment, the upper and lower ends of the fixing rod are provided with fixing rod threads, and the fixing rod is provided with a fixing rod groove at the position corresponding to the first bottom cover through hole. The fixing rod groove is equipped with a third sealing element, and the fastener is provided with a sealing pressure plate. The fastener is also provided with a closed handle or a through handle. The fixing rod passes through the filter head through hole, the isolation tube and the first bottom cover through hole in sequence. The fixing rod thread at the upper end of the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread at the lower end of the fixing rod is connected and fixed with the fastener. The inner circular wall of the first bottom cover through hole is tightly abutted and sealed with the third sealing element assembled on the fixing rod groove.

[0013] In one embodiment, a second bottom cover perforation is provided on the lower outer side of the bottom cover, and the fastener is provided with a sealing pressure plate and a closed handle or a perforated handle.

[0014] In one embodiment, an annular groove is provided on the inner ring wall of the filter head perforation. The filter head groove is fitted with a second sealing element. The upper and lower ends of the fixing rod are provided with fixing rod threads. The fixing rod passes through the filter head perforation, the second sealing element and the first bottom cover perforation in sequence. The fixing rod thread at the upper end of the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread at the lower end of the fixing rod is connected and fixed with a fastener. The fixing rod and the second sealing element fitted on the filter head groove are tightly abutted and sealed.

[0015] In one embodiment, an annular groove is provided on the inner ring wall of the filter head perforation. A second sealing element is fitted in the filter head groove. The entire length of the fixing rod is provided with a fixing rod thread. The filter assembly with the second seal also includes a screw sleeve. The screw sleeve has a perforated screw sleeve thread in the middle. The screw sleeve is assembled with the fixing rod through the screw sleeve thread and the fixing rod thread. The fixing rod passes through the filter head perforation, the first bottom cover perforation, and the second sealing element in sequence. The fixing rod thread above the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread below the fixing rod is connected and fixed with a fastener. The screw sleeve and the second sealing element fitted on the filter head groove are tightly abutted and sealed.

[0016] In one embodiment, the upper and lower ends of the fixing rod are provided with fixing rod threads, and the fixing rod is provided with a fixing rod groove at the position corresponding to the filter head through hole. The fixing rod groove is equipped with a third sealing element. The fixing rod passes through the filter head through hole and the first bottom cover through hole in sequence. The fixing rod thread above the fixing rod is connected and fixed with the thread on the filter bottle cover. The fixing rod thread below the fixing rod is connected and fixed with a fastener. The inner circular wall of the filter head through hole is tightly abutted and sealed with the third sealing element assembled on the fixing rod groove.

[0017] This invention also proposes a device with a water purification function, including the aforementioned second-sealed filter assembly.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This invention solves the problem of using filter components with no internal perforations in the filter head in conjunction with water purifiers with fixed rods, and the problem of secondary sealing between raw water and purified water. It expands the application range of filter components and brings users more consumer experience and benefits. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional view of Embodiment 3 of the filter assembly with a second sealing according to the present invention.

[0023] Figure 2 This is a partially enlarged view of Embodiment 3 of the filter assembly with a second sealing according to the present invention.

[0024] Figure 3 This is a structural diagram of the filter head of Embodiment 3 of the filter assembly with second sealing according to this utility model.

[0025] Figure 4 This is a structural diagram of the fixing rod of Embodiment 3 of the filter assembly for the second sealing of this utility model.

[0026] Figure 5 This is a structural diagram of the bottom cover of Embodiment 3 of the filter assembly with second sealing according to this utility model.

[0027] Figure 6 This is a fastener structure diagram of Embodiment 3 of the filter assembly for the second sealing of this utility model.

[0028] Figure 7 This is a structural diagram of the isolation tube in Embodiment 3 of the filter assembly with second sealing according to this utility model.

[0029] Figure 8 This is a structural diagram of the filter assembly with water passage holes in the second sealing of this utility model.

[0030] Figure 9 This is an exploded view of a third embodiment of the filter assembly with a second seal according to this utility model.

[0031] Figure 10 This is a cross-sectional view of Embodiment 4 of the filter assembly with a second sealing according to the present invention.

[0032] Figure 11 This is a partial enlarged view of Embodiment 4 of the filter assembly with a second sealing according to this utility model.

[0033] Figure 12 This is a structural diagram of the bottom cover of Embodiment 4 of the filter assembly with second sealing according to this utility model.

[0034] Figure 13 This is a fastener structure diagram of Embodiment 4 of the filter assembly for the second sealing of this utility model.

[0035] Figure 14 This is an exploded view of Embodiment 4 of the filter assembly with a second seal according to this utility model.

[0036] Figure 15 This is a cross-sectional view of Embodiment 5 of the filter assembly with a second seal according to this utility model.

[0037] Figure 16 This is a partial enlarged view of Embodiment 5 of the second-sealed filter assembly of this utility model.

[0038] Figure 17 This is a structural diagram of the fixing rod in Embodiment 5 of the filter assembly for the second sealing of this utility model.

[0039] Figure 18 This is a cross-sectional view of Embodiment Six of the second-sealed filter assembly of this utility model.

[0040] Figure 19 This is a partial enlarged view of Embodiment Six of the second-sealed filter assembly of this utility model.

[0041] Figure 20 This is a structural diagram of the fixing rod of Embodiment Six of the filter assembly for the second sealing of this utility model.

[0042] Figure 21 This is a structural diagram of the bottom cover of Embodiment Six of the second-sealed filter assembly of this utility model.

[0043] Figure 22 This is an exploded view of Embodiment Six of the second-sealed filter assembly of this utility model.

[0044] Figure 23 This is a cross-sectional view of Embodiment 8 of the filter assembly with a second sealing according to the present invention.

[0045] Figure 24 This is a partial enlarged view of Embodiment 8 of the filter assembly with second sealing according to the present invention.

[0046] Figure 25 This is a structural diagram of the filter head of Embodiment 8 of the filter assembly with second sealing according to this utility model.

[0047] Figure 26 This is a cross-sectional view of Embodiment Nine of the second-sealed filter assembly of this utility model.

[0048] Figure 27 This is a partially enlarged view of Embodiment 9 of the filter assembly with a second sealing according to the present invention.

[0049] Figure 28 This is a cross-sectional view of Embodiment 10 of the filter assembly with a second sealing according to the present invention.

[0050] Figure 29 This is a partial enlarged view of Embodiment 10 of the filter assembly with second sealing according to the present invention.

[0051] Figure 30 This is a structural diagram of the filter assembly without water passage holes for the second sealing of this utility model.

[0052] Figure label:

[0053] 1. Top cover; 11. Top cover perforation; 12. Top cover groove; 13. First seal;

[0054] 2. Filter head; 21. Filter head perforation; 22. First isolation tube groove; 23. Isolation tube; 24. Filter head groove; 25. Second seal; 26. Filter element;

[0055] 3. Fixing rod; 31. Fixing rod thread; 32. Fixing rod groove; 33. Third seal; 34. Screw sleeve; 35. Screw sleeve thread;

[0056] 4. Fasteners; 41. Sealing plates; 42. Sealing handles; 43. Perforated handles;

[0057] 5. Cylinder body; 51. Water passage hole;

[0058] 6. Bottom cover; 61. First bottom cover perforation; 62. Second bottom cover perforation; 63. Second isolation tube groove; 64. First bottom cover groove; 65. Second bottom cover groove.

[0059] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0060] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0061] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship 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 simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0065] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

[0066] Based on the embodiments of this utility model, engineers in the art can make some non-essential improvements and adjustments to this utility model without creative effort, and the resulting other embodiments are all within the scope of protection of this utility model.

[0067] This invention proposes a filter assembly with a second seal.

[0068] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 14 , Figure 15 , Figure 18 , Figure 22 , Figure 23 , 26 and Figure 28 As shown in Embodiment 1 of this utility model, the second-sealed filter assembly includes a top cover 1, a filter head 2, a filter element 26, a fixing rod 3, a fastener 4, a cylinder body 5, and a bottom cover 6. The bottom cover 6 has a first bottom cover through hole 61, and the filter head 2 has a filter head through hole 21. The second-sealed filter assembly also includes an isolation tube 23. The upper and lower ends of the isolation tube 23 are respectively connected to and sealed with the filter head and the bottom cover 6. The fixing rod 3 passes through the filter head through hole 21, the isolation tube 23, and the first bottom cover through hole 61 in sequence, and the fixing rod 3 is connected to and sealed with the bottom cover 6; or, the fixing rod 3 passes through the filter head through hole 21 and the first bottom cover through hole 61 in sequence, and the fixing rod 3 is sealed with the filter head 2.

[0069] The cylinder body 5 is provided with a water passage hole 51.

[0070] Based on Embodiment 1 of this utility model, in Embodiment 2 of this utility model, the contents that are the same as or similar to those in Embodiment 1 can be referred to the above description, and will not be repeated hereafter. Embodiment 2:

[0071] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, a first isolation tube groove 22 is provided at the lower center of the filter head 2, and a second isolation tube groove 63 is provided at the upper center of the bottom cover 6. The first isolation tube groove 22 and the second isolation tube groove 63 are respectively fitted to the upper and lower ends of the isolation tube 23 and sealed together. A second bottom cover through hole 62 is provided on the lower outer side of the bottom cover 6.

[0072] Based on Embodiment 2 of this utility model, in Embodiment 3 of this utility model, the contents that are the same as or similar to those in Embodiment 2 can be referred to the above description, and will not be repeated hereafter. Embodiment 3:

[0073] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the second-sealed filter assembly also includes a first sealing element 13. A first bottom cover groove 64 is provided between the first bottom cover perforation 61 and the second bottom cover perforation 62. The first bottom cover groove 64 is fitted with the first sealing element 13. The upper and lower ends of the fixing rod 3 are provided with fixing rod threads 31. The fastener 4 is provided with a sealing pressure plate 41 and a sealing handle 42. The fixing rod 3 passes through the filter core head perforation 21, the isolation tube 23, the first bottom cover perforation 61 and the first sealing element 13 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed to the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed to the fastener 4. The sealing pressure plate 41 of the fastener 4 tightly abuts and seals with the first sealing element 13 fitted on the first bottom cover groove 64.

[0074] Based on Embodiment 2 of this utility model, in Embodiment 4 of this utility model, the contents that are the same as or similar to those in Embodiment 2 can be referred to the above description, and will not be repeated hereafter. Embodiment 4:

[0075] like Figure 3 , Figure 6 , Figure 4 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the inner ring wall of the first bottom cover perforation 61 is provided with an annular second bottom cover groove 65. The second bottom cover groove 65 is equipped with a second sealing element 25. The upper and lower ends of the fixing rod 3 are provided with fixing rod threads 31. The fastener 4 is provided with a sealing pressure plate 41. The fastener 4 is also provided with a closed handle 42 or a perforated handle 43. The fixing rod 3 passes through the filter core head perforation 21, the isolation tube 23, the first bottom cover perforation 61 and the second sealing element 25 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The fixing rod 3 is tightly abutted against and sealed with the second sealing element 25 assembled on the second bottom cover groove 65.

[0076] Based on Embodiment 2 of this utility model, in Embodiment 5 of this utility model, the contents that are the same as or similar to those in Embodiment 2 can be referred to the above description, and will not be repeated hereafter. Embodiment 5:

[0077] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 12 , Figure 13 , Figure 15 , Figure 16 and Figure 17 As shown, the inner ring wall of the first bottom cover perforation 61 is provided with an annular second bottom cover groove 65. The second bottom cover groove 65 is equipped with a second sealing element 25. The entire length of the fixing rod 3 is provided with a fixing rod thread 31. The filter assembly for the second sealing also includes a screw sleeve 34. The screw sleeve 34 has a perforated screw sleeve thread 35 in the middle. The screw sleeve 34 is assembled with the fixing rod 3 through the screw sleeve thread 35 and the fixing rod thread 31. The fastener 4 is provided with a sealing pressure plate 41. The fastener 4 is also provided with a closed handle 42 or a perforated handle 43. The fixing rod 3 passes through the filter core head perforation 21, the isolation tube 23, the first bottom cover perforation 61 and the second sealing element 25 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The screw sleeve 34 is tightly abutted and sealed with the second sealing element 25 assembled on the second bottom cover groove 65.

[0078] Based on Embodiment 2 of this utility model, in Embodiment 6 of this utility model, the contents that are the same as or similar to those in Embodiment 2 can be referred to the above description, and will not be repeated hereafter. Embodiment 6:

[0079] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 13 , Figure 18 , Figure 19 , Figure 20 , Figure 21 and Figure 22 As shown, the upper and lower ends of the fixing rod 3 are provided with fixing rod threads 31, and the fixing rod 3 is provided with a fixing rod groove 32 at the position corresponding to the first bottom cover through hole 61. The fixing rod groove 32 is equipped with a third sealing element 33. The fastener 4 is provided with a sealing pressure plate 41. The fastener 4 is also provided with a closed handle 42 or a through handle 43. The fixing rod 3 passes through the filter core head through hole 21, the isolation tube 23 and the first bottom cover through hole 61 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The inner circular wall of the first bottom cover through hole 61 is tightly abutted and sealed with the third sealing element 33 assembled on the fixing rod groove 32.

[0080] Based on Embodiment 1 of this utility model, in Embodiment 7 of this utility model, the contents that are the same as or similar to those in Embodiment 1 can be referred to the above description, and will not be repeated hereafter. Embodiment 7:

[0081] like Figure 6 , Figure 13 and Figure 21 As shown, the bottom cover 6 has a second bottom cover perforation 62 on the lower outer side, the fastener 4 has a sealing pressure plate 41, and the fastener 4 also has a closed handle 42 or a perforated handle 43.

[0082] Based on Embodiment Seven of this utility model, in Embodiment Eight of this utility model, the contents that are the same as or similar to those in Embodiment Seven can be referred to the above description, and will not be repeated hereafter. Embodiment Eight:

[0083] like Figure 4 , Figure 6 , Figure 8 , Figure 13 , Figure 21 , Figure 23 , Figure 24 and Figure 25 As shown, an annular filter head groove 24 is provided on the inner ring wall of the filter head perforation 21. The filter head groove 24 is equipped with a second sealing element 25. The upper and lower ends of the fixing rod 3 are provided with fixing rod threads 31. The fixing rod 3 passes through the filter head perforation 21, the second sealing element 25 and the first bottom cover perforation 61 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The fixing rod 3 is tightly abutted and sealed with the second sealing element 25 assembled on the filter head groove 24.

[0084] Based on Embodiment 7 of this utility model, in Embodiment 9 of this utility model, the contents that are the same as or similar to those in Embodiment 7 can be referred to the above description, and will not be repeated hereafter. Embodiment 9:

[0085] like Figure 6 , Figure 8 , Figure 13 , Figure 17 , Figure 25 , Figure 26 and Figure 27 As shown, the inner ring wall of the filter head perforation 21 is provided with an annular filter head groove 24. The filter head groove 24 is equipped with a second sealing element 25. The entire length of the fixing rod 3 is provided with a fixing rod thread 31. The filter assembly for the second sealing is also a screw sleeve 34. The screw sleeve 34 has a perforated screw sleeve thread 35 in the middle. The screw sleeve 34 is assembled with the fixing rod 3 through the screw sleeve thread 35 and the fixing rod thread 31. The fixing rod 3 passes through the filter head perforation 21, the first bottom cover perforation 61 and the second sealing element 25 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The screw sleeve 34 is tightly abutted against and sealed with the second sealing element 25 assembled on the filter head groove 24.

[0086] Based on Embodiment Seven of this utility model, in Embodiment Ten of this utility model, the contents that are the same as or similar to those in Embodiment Seven can be referred to the above description, and will not be repeated hereafter. Embodiment Ten:

[0087] like Figure 6 , Figure 8 , Figure 13 , Figure 20 , Figure 28 and Figure 29 As shown, the upper and lower ends of the fixing rod 3 are provided with fixing rod threads 31, and the fixing rod 3 is provided with a fixing rod groove 32 at the position corresponding to the filter element head through hole 21. The fixing rod groove 32 is equipped with a third sealing element 33. The fixing rod 3 passes through the filter element head through hole 21 and the first bottom cover through hole 61 in sequence. The fixing rod thread 31 above the fixing rod 3 is connected and fixed with the thread on the filter bottle cover. The fixing rod thread 31 below the fixing rod 3 is connected and fixed with the fastener 4. The sealing pressure plate 41 is tightly abutted against the bottom of the bottom cover 6. The inner circular wall of the filter element head through hole 21 is tightly abutted and sealed with the third sealing element 33 assembled on the fixing rod groove 32.

[0088] like Figure 8 As shown, the cylinder body 5 with the water hole 51 is applicable to any of the above embodiments.

[0089] like Figure 30 As shown, the cylinder body 5 without water passage 51 is applicable to any of the above embodiments.

[0090] like Figure 1 , Figure 10 , Figure 15 , Figure 18 , Figure 23 , Figure 26 and Figure 28 As shown, when the cylinder body 5 adopts Figure 8 When the cylindrical body 5 with water passage 51 is shown, the filter element 26 can be made of ultrafiltration membrane.

[0091] like Figure 1 , Figure 10 , Figure 15 , Figure 18 As shown, when the cylinder body 5 adopts Figure 30 When the cylinder 5 shown has no water passage holes 51, the filter element 26 can be made of ultrafiltration membrane, granular activated carbon, granular softening resin, or other particulate filter materials. When the filter element 26 is made of granular activated carbon, granular softening resin, or other particulate filter materials, then the filter head 2 and bottom cover 6 need to be equipped with filter screens that can intercept large particles of filter media. The filter screens can be made of non-woven fabric, stainless steel wire mesh, etc.

[0092] This utility model also proposes a device with a water purification function, which includes a second-sealed filter assembly. The specific structure of the second-sealed filter assembly is as described in the above embodiments. Since this device with a water purification function adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0093] For example, 1. Figure 10 , Figure 15 , Figure 18 , Figure 23 , Figure 26 and Figure 28 As shown, the top cover groove 12 is located on the outer side above the top cover through hole 11. The top cover groove 12 is equipped with a first sealing element 13, and the fixing rod 3 passes through the top cover through hole 11 and the first sealing element 13.

[0094] like Figure 1As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The isolation tube 23 is connected and sealed to the first isolation tube groove 22 and the second isolation tube groove 63 respectively. The fastener 4 tightly abuts against the first sealing element 13 mounted on the first bottom cover groove 64, sealing the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0095] like Figure 10 As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The isolation tube 23 is connected and sealed to the first isolation tube groove 22 and the second isolation tube groove 63 respectively. The fixing rod 3 tightly abuts against the second sealing element 25 mounted on the second bottom cover groove 65, sealing the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0096] like Figure 15 As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The isolation tube 23 is connected and sealed to the first isolation tube groove 22 and the second isolation tube groove 63 respectively. The screw sleeve 34 tightly abuts against the second sealing element 25 assembled on the second bottom cover groove 65, sealing the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0097] like Figure 18As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The isolation tube 23 is connected and sealed to the first isolation tube groove 22 and the second isolation tube groove 63 respectively. The inner circular wall of the first bottom cover perforation 61 tightly abuts against the third sealing element 33 mounted on the fixing rod groove 32, isolating the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0098] like Figure 23 As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The fixing rod 3 tightly abuts against the second sealing element 25 assembled on the filter element head groove 24, sealing it and isolating the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0099] like Figure 26 As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The screw sleeve 34 tightly abuts against the second sealing element 25 assembled on the filter element head groove 24, sealing it and isolating the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0100] like Figure 28As shown, the water flow direction and sealing principle of the second-sealed filter assembly are as follows: Raw water enters from the raw water inlet on the right side above the filter bottle cap, passes through the water passage 51 and the second bottom cover perforation 62, and is filtered by the filter element 26. The purified water then flows out from the purified water inlet on the left side above the filter bottle cap. The first sealing element 13 tightly abuts against the hollow column of the water purifier filter bottle cap, isolating the raw water and purified water for the first time, thus achieving the first seal of the second-sealed filter assembly in this case. The inner circular wall of the filter element head perforation 21 tightly abuts against the third sealing element 33 mounted on the fixing rod groove 32, sealing the filter assembly and isolating the raw water and purified water for the second time, thus achieving the second seal of the second-sealed filter assembly in this case.

[0101] The beneficial effects of this utility model are:

[0102] This invention solves the problem of using filter components with no internal perforations in the filter head in conjunction with water purifiers with fixed rods, and the problem of secondary sealing between raw water and purified water. It expands the application range of filter components and brings users more consumer experience and benefits.

[0103] The above description is merely an exemplary embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A second-sealed filter assembly, comprising a top cover (1), a filter head (2), a filter element (26), a fixing rod (3), a fastener (4), a cylinder body (5), and a bottom cover (6), wherein the bottom cover (6) is provided with a first bottom cover perforation (61), characterized in that, The filter head (2) is provided with a filter head perforation (21); The second-sealed filter assembly also includes an isolation tube (23), the upper and lower ends of which are connected and sealed to the filter head (2) and the bottom cover (6) respectively. The fixing rod (3) passes through the filter head through hole (21), the isolation tube (23) and the first bottom cover through hole (61) in sequence, and the fixing rod (3) is connected and sealed to the bottom cover (6). Alternatively, the fixing rod (3) passes through the filter head perforation (21) and the first bottom cover perforation (61) in sequence, and the fixing rod (3) is sealed to the filter head (2).

2. The filter assembly with a second seal as described in claim 1, characterized in that, The filter head (2) has a first isolation tube groove (22) at the lower middle position, and the bottom cover (6) has a second isolation tube groove (63) at the upper middle position. The first isolation tube groove (22) and the second isolation tube groove (63) are respectively fitted to the upper and lower ends of the isolation tube (23) and sealed together. The bottom cover (6) has a second bottom cover perforation (62) on the lower outer side.

3. The filter assembly with a second seal as described in claim 2, characterized in that, The filter assembly for the second sealing also includes a first sealing element (13), a first bottom cover groove (64) is provided between the first bottom cover perforation (61) and the second bottom cover perforation (62), the first bottom cover groove (64) is fitted with the first sealing element (13), the upper and lower ends of the fixing rod (3) are provided with fixing rod threads (31), and the fastener (4) is provided with a sealing pressure plate (41) and a closing handle (42). The fixing rod (3) passes through the filter head perforation (21), the isolation tube (23), the first bottom cover perforation (61) and the first sealing element (13) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed to the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed to the fastener (4). The fastener (4) is tightly abutted and sealed with the first sealing element (13) assembled on the first bottom cover groove (64).

4. The filter assembly with a second seal as described in claim 2, characterized in that, The inner ring wall of the first bottom cover perforation (61) is provided with an annular second bottom cover groove (65), the second bottom cover groove (65) is equipped with a second sealing element (25), the upper and lower ends of the fixing rod (3) are provided with fixing rod threads (31), the fastener (4) is provided with a sealing pressure plate (41), the fastener (4) is also provided with a closed handle (42) or a perforation handle (43), the fixing rod (3) passes through the filter head perforation (21), the isolation tube (23), the first bottom cover perforation (61) and the second sealing element (25) in sequence, the fixing rod thread (31) above the fixing rod (3) is connected and fixed with the thread on the filter bottle cover, the fixing rod thread (31) below the fixing rod (3) is connected and fixed with the fastener (4), the fixing rod (3) and the second sealing element (25) assembled on the second bottom cover groove (65) are tightly abutted and sealed.

5. The filter assembly with a second seal as described in claim 2, characterized in that, The inner ring wall of the first bottom cover perforation (61) is provided with an annular second bottom cover groove (65), and the second bottom cover groove (65) is equipped with a second sealing element (25). The entire length of the fixing rod (3) is provided with a fixing rod thread (31). The filter assembly of the second seal also includes a screw sleeve (34). The screw sleeve (34) is provided with a perforated screw sleeve thread (35) in the middle. The screw sleeve (34) is assembled with the fixing rod (3) through the screw sleeve thread (35) and the fixing rod thread (31). The fastener (4) is provided with a sealing pressure plate (41). The fastener (4) is also provided with a closed handle (42) or a through handle (43). The fixing rod (3) passes through the filter head through hole (21), the isolation tube (23), the first bottom cover through hole (61) and the second sealing member (25) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed to the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed to the fastener (4). The screw sleeve (34) is tightly abutted and sealed with the second sealing member (25) assembled on the second bottom cover groove (65).

6. The filter assembly with a second seal as described in claim 2, characterized in that, The upper and lower ends of the fixing rod (3) are provided with fixing rod threads (31). The fixing rod (3) is provided with a fixing rod groove (32) at the position corresponding to the first bottom cover through hole (61). The fixing rod groove (32) is equipped with a third sealing element (33). The fastener (4) is provided with a sealing pressure plate (41). The fastener (4) is also provided with a closed handle (42) or a through handle (43). The fixing rod (3) passes through the filter head through hole (21), the isolation tube (23) and the first bottom cover through hole (61) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed to the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed to the fastener (4). The inner circular wall of the first bottom cover through hole (61) is tightly abutted and sealed with the third sealing element (33) assembled on the fixing rod groove (32).

7. The filter assembly with a second seal as described in claim 1, characterized in that, The bottom cover (6) has a second bottom cover perforation (62) on its lower outer side. The fastener (4) has a sealing pressure plate (41). The fastener (4) also has a closed handle (42) or a perforated handle (43).

8. The filter assembly with a second seal as described in claim 7, characterized in that, The inner ring wall of the filter head perforation (21) is provided with an annular filter head groove (24). The filter head groove (24) is equipped with a second sealing element (25). The upper and lower ends of the fixing rod (3) are provided with fixing rod threads (31). The fixing rod (3) passes through the filter head perforation (21), the second sealing element (25) and the first bottom cover perforation (61) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed to the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed to the fastener (4). The fixing rod (3) and the second sealing element (25) assembled on the filter head groove (24) are tightly abutted and sealed.

9. The filter assembly with a second seal as described in claim 7, characterized in that, The inner ring wall of the filter head perforation (21) is provided with an annular filter head groove (24), the filter head groove (24) is equipped with a second sealing element (25), the entire length of the fixing rod (3) is provided with a fixing rod thread (31), the filter assembly of the second seal also includes a screw sleeve (34), the screw sleeve (34) is provided with a perforated screw sleeve thread (35) in the middle, the screw sleeve (34) is connected to the fixing rod (3) through the screw sleeve thread (35) and the fixing rod thread (31). The fixing rod (3) is assembled together, and the fixing rod (3) passes through the filter head through hole (21), the first bottom cover through hole (61) and the second sealing member (25) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed to the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed to the fastener (4). The screw sleeve (34) is tightly abutted and sealed with the second sealing member (25) assembled on the filter head groove (24).

10. The filter assembly with a second seal as described in claim 7, characterized in that, The upper and lower ends of the fixing rod (3) are provided with fixing rod threads (31). The fixing rod (3) is provided with a fixing rod groove (32) at the position corresponding to the filter head through hole (21). The fixing rod groove (32) is equipped with a third sealing element (33). The fixing rod (3) passes through the filter head through hole (21) and the first bottom cover through hole (61) in sequence. The fixing rod thread (31) above the fixing rod (3) is connected and fixed with the thread on the filter bottle cover. The fixing rod thread (31) below the fixing rod (3) is connected and fixed with the fastener (4). The inner circular wall of the filter head through hole (21) is tightly abutted and sealed with the third sealing element (33) assembled on the fixing rod groove (32).

11. A device with a water purification function, characterized in that, The filter assembly includes a second seal as described in any one of claims 1 to 10.

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