Filter bottle of water purification filter

Abstract

The filter bottle comprises a barrel with a bottom wall, a water inlet and a water outlet are formed in the end, away from the bottom wall, of the barrel, a compaction part is arranged in the barrel, a containing cavity is defined by the compaction part and the barrel, the containing cavity is communicated with the water inlet and the water outlet, and a granular filter material is arranged in the containing cavity. An elastic piece is arranged between the bottom wall and the compaction piece, one end of the elastic piece is connected with the bottom wall, the other end of the elastic piece is connected with the compaction piece, and the elastic piece can apply acting force to the compaction piece, so that the compaction piece moves in the axial direction of the cylinder body to compress the filter material. According to the filter bottle of the water purification filter, the filter material is kept in a compacted state in real time in the whole life cycle, raw water can make full contact with the filter material, the filtering performance is effectively improved, the service life is prolonged, in addition, the elastic change of the elastic piece acts on the compacting piece, an automatic compacting mechanism of the filter material is formed, human intervention is not needed, and practicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of water filtration equipment, and in particular to a filter bottle of a water purification filter. Background Art

[0002] A water purifier is a filtration device used to purify water. It uses various filtration technologies to remove impurities such as suspended solids, bacteria, organic matter, and heavy metals, thereby improving the quality and safety of drinking water. Common water purifiers include activated carbon filters and reverse osmosis filters. Proper filter selection and replacement, along with regular maintenance and cleaning, are crucial to ensuring the effectiveness of your water purifier. Depending on the quality of your tap water, a multi-stage filtration system may be appropriate. The filter cartridge is a key component of a water purifier, and its performance directly determines the quality of the filtered water.

[0003] The filter bottle is filled with filter material for water filtration. For example, the filter bottle of an activated carbon filter is filled with activated carbon filter material, and the filter bottle of a reverse osmosis filter is filled with reverse osmosis membrane filter material. Existing filter bottles filled with granular filter material such as resin and charcoal can easily become loose and collapse due to vibration during transportation and use, as well as damage to the granular filter material within the filter bottle. This can even lead to the volume of the filled filter material being smaller than the volume that can be accommodated within the filter bottle after being washed by varying water pressure. This can cause the filter material to form a riverbed structure along the direction of water flow, causing some raw water to flow through the space between the riverbed structure and the inner wall of the filter bottle. Since this space is free of filter material, the raw water cannot fully contact the filter material, thereby affecting the filtration performance and service life of the filter. Utility Model Content

[0004] The present application provides a filter bottle of a water purifier to solve the technical problem that the filter bottle of the current water purifier is filled with granular filter material, and the filter material is easily loosened and collapsed, thereby affecting the filtering performance and service life of the filter.

[0005] The technical solutions adopted in this application are:

[0006] A filter bottle of a water purification filter comprises a cylindrical body provided with a bottom wall, an end of the cylindrical body away from the bottom wall being provided with a water inlet and a water outlet, a compacting piece being provided in the cylindrical body, the compacting piece and the cylindrical body being enclosed to form a accommodating cavity, the accommodating cavity being communicated with the water inlet and the water outlet, a granular filter material being provided in the accommodating cavity, an elastic piece being provided between the bottom wall and the compacting piece, one end of the elastic piece being connected to the bottom wall, and the other end being connected to the compacting piece, the elastic piece being able to exert a force on the compacting piece so that the compacting piece moves along the axial direction of the cylindrical body and presses the filter material.

[0007] The filter bottle of the water purification filter provided in this application also includes the following additional technical features:

[0008] The elastic part is set as a spring; the bottom wall is provided with a first limiting ring groove, and the end of the spring connected to the bottom wall is embedded in the first limiting ring groove; the compacting part is provided with a second limiting ring groove, and the end of the spring connected to the compacting part is embedded in the second limiting ring groove.

[0009] The first limiting ring groove and the second limiting ring groove are provided with limiting bosses extending toward each other respectively. The limiting bosses are configured as prismatic structures and abut against the inner wall of the elastic member through side edges.

[0010] The elastic member is configured as a spring; a first abutting plane is provided at one end of the spring connected to the bottom wall, a first mating plane is provided at the bottom wall, a second abutting plane is provided at one end of the spring connected to the compression member, and a second mating plane is provided at the compression member. The first abutting plane, the first mating plane, the second abutting plane and the second mating plane are parallel and perpendicular to the central axis of the cylinder, the first abutting plane abuts against the first mating plane, and the second abutting plane abuts against the second mating plane, so that the central axis of the spring is parallel to or coincides with the central axis of the cylinder.

[0011] The bottom wall and the compacting piece enclose a water passage cavity, the compacting piece is provided with a central hole and a plurality of water passage holes distributed circumferentially around the central hole, a central tube is provided in the accommodating cavity, the filter material is filled between the side wall of the accommodating cavity and the outer wall of the central tube, one end of the central tube is fixedly connected to the cylinder and communicated with the water inlet, and the other end passes through the central hole, and the water in the central tube flows into the water passage cavity and into the filter material through the water holes.

[0012] The compacting member is connected to a first filter member covering the water hole to prevent the filter material from passing through the water hole and entering the water cavity.

[0013] An inner cylinder is provided in the accommodating cavity, and the filter material is filled in the inner cylinder and between the side wall of the accommodating cavity and the outer wall of the inner cylinder. One end of the inner cylinder is fixedly connected to the cylinder body and communicated with the water inlet, and the other end is communicated with the accommodating cavity.

[0014] The end of the inner cylinder is provided with a guide rib extending toward the bottom wall, and a plurality of the guide ribs are spaced apart along the circumference of the inner cylinder, and a water passage connecting the internal space of the inner cylinder and the external space is formed between two adjacent guide ribs. The side surfaces of the guide ribs abut against the inner wall of the cylinder to form a radial limit, and the edge of the compacting part is provided with a guide groove along the circumference that slides with the guide rib.

[0015] Along the central axis of the cylinder pointing to the bottom wall, the inner cylinder includes an expansion section with a gradually increasing inner diameter and a cylindrical section connected to the expansion section. A positioning piece with a through hole is provided at the joint position between the expansion section and the cylindrical section. A second filter element is provided on one side of the positioning piece for limiting the filter material in the inner cylinder to the cylindrical section.

[0016] The compacting piece and the bottom wall enclose a water passage cavity, and the compacting piece is provided with a water passage hole to connect the accommodating cavity with the water passage cavity.

[0017] Due to the adoption of the above technical solution, the technical effects achieved by this application include at least:

[0018] 1. The filter bottle of the water purification filter provided by the present application, the granular filter material is filled in the accommodating cavity formed by the cylinder and the compacting member, the bottom wall of the cylinder and the compacting member are connected by an elastic member, and when the bottom wall covers the cylinder, pressure is applied to the elastic member, so that the elastic member elastically presses against the compacting member. When the filter material becomes loose, collapses, or a riverbed structure appears due to erosion by changing water pressure, resulting in it not being tightly filled in the accommodating cavity, the elastic member applies a force to the compacting member, causing the compacting member to move along the axial direction of the cylinder, and the space in the accommodating cavity is reduced by the movement of the compacting member, thereby reducing the space in the accommodating cavity that can be filled with the filter material, and the filter material is pressed and compacted in the reduced space, so that the filter material in the filter bottle remains compacted in real time throughout its life cycle, and the raw water can fully contact the filter material, effectively improving the filtration performance of the filter and extending its service life. Moreover, the elastic change of the elastic member acts on the compacting member to form a mechanism that can automatically compact the filter material without human intervention, which is highly practical.

[0019] 2. As a preferred embodiment of the present application, the elastic member is configured as a spring, and both ends of the spring are respectively embedded in the first limiting ring groove and the second limiting ring groove to form radial limitation and circumferential positioning of the spring, effectively limiting the spring from deviating from the axial movement, ensuring smooth axial movement of the spring, and also helping to evenly distribute the force applied by the spring on the compacting member on the compacting member. The force balance of the compacting member can effectively avoid tilting relative to the axial direction of the cylinder.

[0020] 3. As a preferred embodiment of the present application, the elastic member is configured as a spring, the first abutting plane abuts against the first matching plane, and the second abutting plane abuts against the second matching plane, so that the central axis of the spring is parallel to or coincides with the central axis of the cylinder, effectively limiting the axial torsion and deflection of the spring from the cylinder, and also helping to evenly distribute the force applied by the spring on the compacting member on the compacting member, so that the resultant force exerted on the compacting member points in the axial direction of the cylinder, ensuring that the compacting member moves stably and compacts the filter material under the action of the spring, and effectively avoiding the compacting member from tilting axially relative to the cylinder and affecting the compaction degree of the filter material.

[0021] 4. As a preferred embodiment of the present application, the filter material is filled between the side wall of the accommodating chamber and the outer wall of the central tube. One end of the central tube is fixedly connected to the cylinder and communicated with the water inlet, and the other end passes through the central hole. On the one hand, during the water inflow of the filter bottle, the central tube guides the raw water into the water passage chamber, and the water passage chamber then guides the raw water through the water passage hole between the side wall of the accommodating chamber and the outer wall of the central tube, so that the raw water is filtered through the filter material. The water flow enters the filter material after being buffered by the water passage chamber, which is equivalent to a reverse impact on the compacting element, which has a pushing effect on the compacting element, helping the compacting element to further compact the filter material and improve the filtration uniformity of the filter material. On the other hand, the cooperation between the central hole and the central tube can also form a guiding effect for the axial movement of the compacting element along the cylinder. Under the action of the spring, the compacting element moves more stably along the central tube and avoids tilting. On the other hand, the side wall of the accommodating chamber and the outer wall of the central tube enclose a regular cylindrical space, which helps to evenly distribute the granular filter material in the accommodating chamber and also helps to compact the filter material by the compacting element, thereby improving the filtration effect.

[0022] 5. As a preferred embodiment of the present application, an inner cylinder is provided in the accommodating chamber, and the filter material is filled in the inner cylinder and between the side wall of the accommodating chamber and the outer wall of the inner cylinder, making full use of the internal and external spaces of the inner cylinder. After the raw water enters the filter bottle, it is first filtered by the filter material inside the inner cylinder and then enters the filter material outside the inner cylinder for filtration. The filtration path is long, which can appropriately shorten the length and volume of the filter bottle while also helping to improve the filtration performance and filter material utilization. The internal space of the inner cylinder is a regular space, and the side wall of the accommodating chamber and the outer wall of the inner cylinder also form a regular space, which helps to evenly distribute the granular filter material in the internal and external spaces of the inner cylinder, and also helps the compacting member to simultaneously compact the filter material in the internal and external spaces of the inner cylinder, thereby improving the filtration effect.

[0023] 6. As a preferred embodiment of the present application, the end of the inner cylinder is provided with a guide rib extending toward the bottom wall, and a water passage connecting the internal space of the inner cylinder and the external space is formed between two adjacent guide ribs, so that the raw water is first filtered through the filter material inside the inner cylinder and then returned through the water passage to enter the filter material in the external space of the inner cylinder for filtration. Moreover, the side surface of the guide rib is abutted against the inner wall of the cylinder to form a radial limit, thereby preventing the inner cylinder from shifting radially along the cylinder and affecting the normal movement of the compacting part along the axial direction of the cylinder. In addition, the edge of the compacting part is circumferentially provided with a guide groove that slides with the guide rib, so that the sliding cooperation between the guide rib and the guide groove provides guidance for the movement of the compacting part along the axial direction of the cylinder, thereby avoiding tilting of the compacting part and effectively improving the compaction effect of the filter material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 An assembly diagram of a filter bottle of a water purification filter provided in the first embodiment of the present application;

[0026] Figure 2 This is an exploded view of the filter bottle of the water purification filter provided by the first embodiment of the present application;

[0027] Figure 3 A cross-sectional view of the filter bottle of the water purification filter provided in the first embodiment of the present application Figure 1 ;

[0028] Figure 4 A cross-sectional view of the filter bottle of the water purification filter provided in the first embodiment of the present application Figure 2 , where the arrows represent the flow path of raw water from the water inlet into the filter bottle until the purified water is discharged from the water outlet after filtration;

[0029] Figure 5 A schematic structural diagram of a compacting member provided in the first embodiment of the present application;

[0030] Figure 6 An assembly diagram of the compacting element and the first filter element provided in the first embodiment of the present application;

[0031] Figure 7 A cross-sectional view of the filter bottle of the water purification filter provided in the second embodiment of the present application Figure 1 ;

[0032] Figure 8 A cross-sectional view of the filter bottle of the water purification filter provided in the second embodiment of the present application Figure 2 , where the arrows represent the flow path of raw water from the water inlet into the filter bottle until the purified water is discharged from the water outlet after filtration;

[0033] Figure 9 This is a schematic structural diagram of the inner cylinder provided in the second embodiment of the present application;

[0034] Figure 10 A schematic structural diagram of a compacting member provided in the second embodiment of the present application;

[0035] Figure 11 An assembly diagram of the inner cylinder and the cylinder body provided in the second embodiment of the present application;

[0036] Figure 12 An assembly diagram of the inner cylinder, cylinder body, and compacting member provided in the second embodiment of the present application;

[0037] Figure 13 This is a cross-sectional view of the inner cylinder provided in the second embodiment of the present application.

[0038] List of parts and reference numerals:

[0039] 1 cylinder, 11 water inlet, 12 water outlet;

[0040] 2 bottom wall, 21 first limiting ring groove, 22 first matching plane;

[0041] 3 compacting member, 31 second limiting ring groove, 32 second matching plane, 33 center hole, 34 water hole, 35 guide slide groove;

[0042] 4. Accommodation cavity;

[0043] 5. Filter material;

[0044] 6 elastic member, 61 first abutting plane, 62 second abutting plane;

[0045] 7 limiting boss;

[0046] 8 water cavity;

[0047] 9 center tube;

[0048] 10 first filter element;

[0049] 20 inner cylinder, 201 guide rib, 202 expansion section, 203 columnar section, 204 stop limit surface, 205 water passage;

[0050] 30 positioning pieces;

[0051] 40 Second filter element. DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0054] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. Throughout this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] In the embodiments of this application, a filter bottle for a water purifier is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and schematic description and does not constitute a specific limitation of the technical solution provided in this application.

[0058] like Figures 1 to 13 As shown, the filter bottle of a water purification filter provided in the present application includes a barrel 1 provided with a bottom wall 2, and the end of the barrel 1 away from the bottom wall 2 is provided with a water inlet 11 and a water outlet 12, and a compacting part 3 is provided in the barrel 1, and the compacting part 3 and the barrel 1 are enclosed to form a accommodating cavity 4, and the accommodating cavity 4 is communicated with the water inlet 11 and the water outlet 12, and a granular filter material 5 is provided in the accommodating cavity 4, and an elastic part 6 is provided between the bottom wall 2 and the compacting part 3, and one end of the elastic part 6 is connected to the bottom wall 2, and the other end is connected to the compacting part 3, and the elastic part 6 can exert a force on the compacting part 3, so that the compacting part 3 moves along the axial direction of the barrel 1 and presses the filter material 5.

[0059] The filter bottle of the water purification filter provided by the present application has a granular filter material 5 filled in a receiving chamber 4 formed by the cylinder 1 and the compacting member 3. The bottom wall 2 and the compacting member 3 are connected by an elastic member 6. When the bottom wall 2 covers the cylinder 1, pressure is applied to the elastic member 6, causing the elastic member 6 to elastically press against the compacting member 3. When the filter material 5 becomes loose, collapses, or is washed by changing water pressure to form a riverbed structure, resulting in it not being tightly filled in the receiving chamber 4, the elastic member 6 applies a force to the compacting member 3, causing the compacting member 3 to move axially along the cylinder 1. The movement of the compacting member 3 reduces the space in the receiving chamber 4, thereby reducing the space in the receiving chamber 4 that can be filled with the filter material 5, and pressing and compacting the filter material 5 in the reduced space, so that the filter material 5 in the filter bottle remains compacted in real time throughout its life cycle. The raw water can fully contact the filter material 5, effectively improving the filtration performance of the filter and extending its service life. Moreover, the elastic change of the elastic member 6 acts on the compacting member 3, forming a mechanism that can automatically compact the filter material 5, without human intervention, and has strong practicality. In the present application, the connection method between the cylinder 1 and the bottom wall 2 is not limited, such as integral molding, split molding and integral connection, etc. In a preferred embodiment, the cylinder 1 and the bottom wall 2 can also be detachably connected, for example, by a threaded connection or a snap connection.

[0060] Taking the detachable connection between the cylinder 1 and the bottom wall 2 as an example, when assembling the filter bottle, the granular filter material 5 can be pre-loaded and compacted into the cylinder 1, and then the compacting member 3 can be placed into the cylinder 1 to compress the filter material 5. The elastic member 6 can then be connected to the compacting member 3. Finally, the bottom wall 2 is closed over one end of the cylinder 1 and connected to the elastic member 6. The bottom wall 2 compresses the elastic member 6, and the elastic force of the elastic member 6 acts on the compacting member 3. In a preferred embodiment, the compacting member 3 can be constructed as a circular plate-like structure that fits the inner contour of the cylinder 1. The outer peripheral surface of the compacting member 3 abuts the inner wall of the cylinder 1. The force exerted by the elastic member 6 on the compacting member 3 drives the compacting member 3 to slide along the inner wall of the cylinder 1.

[0061] As a preferred embodiment of the present application, Figures 2 to 4 as well as Figure 7 and Figure 8As shown, the elastic member 6 is configured as a spring; the bottom wall 2 is provided with a first limiting ring groove 21, and the end of the spring connected to the bottom wall 2 is embedded in the first limiting ring groove 21; the compacting member 3 is provided with a second limiting ring groove 31, and the end of the spring connected to the compacting member 3 is embedded in the second limiting ring groove 31. It will be understood by those skilled in the art that the two ends of the spring are respectively embedded in the first limiting ring groove 21 and the second limiting ring groove 31 to limit the spring in the radial direction and position it circumferentially, effectively limiting the spring from deviating from the axial movement, ensuring smooth axial movement of the spring, and also helping to evenly distribute the force exerted by the spring on the compacting member 3 on the compacting member 3. The force balance of the compacting member 3 can effectively prevent it from tilting relative to the axial direction of the cylinder 1. Specifically, the first limiting ring groove 21 can be coaxially arranged with the central axis of the bottom wall 2, and the second limiting ring groove 31 can be coaxially arranged with the central axis of the compaction part 3, and the first limiting ring groove 21 and the second limiting ring groove 31 are coaxially arranged, so that the spring is centered between the bottom wall 2 and the compaction part 3, which helps to evenly distribute the force applied by the spring on the compaction part 3 on the compaction part 3.

[0062] Furthermore, the first limiting ring groove 21 and the second limiting ring groove 31 are provided with limiting bosses 7 extending toward each other, respectively. The limiting bosses 7 are configured as a prismatic structure and abut the inner wall of the elastic member 6 through the side edges. It can be understood by those skilled in the art that the limiting boss 7 abuts the inner wall of the spring, forming a radial limit for the spring to prevent the spring from twisting in the radial direction, and also forms an axial guide for the spring, causing it to elastically deform along the limiting boss 7. Moreover, the side edges of the limiting boss 7 abut the spring, and its tensioning effect on the spring can effectively prevent the spring from rotating circumferentially. As a preferred embodiment, the limiting boss 7 can be designed as a regular structure such as a regular triangular prism, a rectangular parallelepiped, a regular pentagonal prism, etc., so that the force applied to the spring is evenly distributed in the circumferential direction of the spring.

[0063] As a preferred embodiment of the present application, the elastic member 6 is configured as a spring; the end of the spring connected to the bottom wall 2 is provided with a first abutting plane 61, the bottom wall 2 is provided with a first mating plane 22, the end of the spring connected to the compression member 3 is provided with a second abutting plane 62, the compression member 3 is provided with a second mating plane 32, the first abutting plane 61, the first mating plane 22, the second abutting plane 62 and the second mating plane 32 are parallel and perpendicular to the central axis of the cylinder 1, the first abutting plane 61 abuts against the first mating plane 22, and the second abutting plane 62 abuts against the second mating plane 32, so that the central axis of the spring is parallel to or coincides with the central axis of the cylinder 1. It is understood by those skilled in the art that by making the central axis of the spring parallel to or coincident with the central axis of the cylinder 1, the axial torsion and deflection of the spring from the cylinder 1 are effectively limited, and the force exerted by the spring on the compacting member 3 is evenly distributed on the compacting member 3, so that the resultant force exerted on the compacting member 3 points in the axial direction of the cylinder 1, ensuring that the compacting member 3 moves stably and compacts the filter material 5 under the action of the spring, and effectively preventing the compacting member 3 from tilting axially relative to the cylinder 1 and affecting the compaction degree of the filter material 5. Further, if Figure 2 and Figure 3 As shown, in the aforementioned technical solution in which the two ends of the spring are respectively embedded in the first limiting ring groove 21 and the second limiting ring groove 31, the bottom surface of the first limiting ring groove 21 constitutes the first mating plane 22. When the end of the spring provided with the first abutting plane 61 is embedded in the first limiting ring groove 21, it abuts the first mating plane 22. Correspondingly, the bottom surface of the second limiting ring groove 31 constitutes the second mating plane 32. When the end of the spring provided with the second abutting plane 62 is embedded in the second limiting ring groove 31, it abuts the second mating plane 32. In addition, in the aforementioned technical solution in which the first limiting ring groove 21, the second limiting ring groove 31, the bottom wall 2, and the pressing member 3 are coaxially arranged, the central axis of the spring and the central axis of the cylinder 1 are precisely confined to a state of coincidence.

[0064] Regarding the filling position of the filter material 5 in the accommodating cavity 4, this application does not specifically limit it, and includes the following embodiments:

[0065] Implementation method one:

[0066] like Figures 1 to 5 As shown, the bottom wall 2 and the compacting member 3 enclose a water passage chamber 8, the compacting member 3 is provided with a central hole 33 and a plurality of water passage holes 34 distributed circumferentially around the central hole 33, the accommodating chamber 4 is provided with a central tube 9, the filter material 5 is filled between the side wall of the accommodating chamber 4 and the outer wall of the central tube 9, one end of the central tube 9 is fixedly connected to the cylinder 1 and communicated with the water inlet 11, and the other end passes through the central hole 33. The water in the central tube 9 flows into the water passage chamber 8 and flows into the filter material 5 through the water holes 34. Figure 4The arrows shown represent the filtration path of the raw water from the water inlet 11 into the filter bottle until it is discharged from the water outlet 12. Through this design, on the one hand, during the water inlet process of the filter bottle, the central tube 9 first guides the raw water entering from the water inlet 11 into the water chamber 8, and the water chamber 8 then guides the raw water through the water hole 34 into the space between the side wall of the accommodating chamber 4 and the outer wall of the central tube 9, so that the raw water is filtered through the filter material 5, and the water flow enters the filter material 5 after being buffered by the water chamber 8, which is equivalent to a reverse impact on the compacting member 3, which has a pushing effect on the compacting member 3, which helps The compacting member 3 further compresses the filter material 5, improving the filtration uniformity of the filter material 5. On the other hand, the cooperation between the center hole 33 and the center tube 9 can also form a guide for the axial movement of the compacting member 3 along the cylinder 1. Under the action of the spring, the compacting member 3 moves more stably along the center tube 9, avoiding tilting. On the other hand, the side wall of the accommodating chamber 4 and the outer wall of the center tube 9 form a regular cylindrical space, which helps to evenly distribute the granular filter material 5 in the accommodating chamber 4, and also helps the compacting member 3 to the filter material 5, thereby improving the filtration effect. Specifically, a herringbone structure rib plate can be provided in the middle of the compacting member 3, a center hole 33 is provided in the center, and three water holes 34 are formed around the herringbone structure rib plate. Of course, other suitable methods can also be used to form the water holes 34.

[0067] Furthermore, the compacting member 3 is connected to a first filter member 10 covering the water hole 34 to prevent the filter material 5 from passing through the water hole 34 into the water cavity 8, ensuring that the filter material 5 remains between the side wall of the accommodating cavity 4 and the outer wall of the central tube 9. This application does not limit the structure of the first filter member 10. Figure 6 As shown, it can be a mesh connected to the inner wall of the water hole 34. Of course, in other embodiments, the first filter element can also be a structure such as filter cotton.

[0068] Implementation method 2:

[0069] like Figures 7 to 13 As shown, the accommodating chamber 4 is provided with an inner cylinder 20, and the filter material 5 is filled in the inner cylinder 20 and between the side wall of the accommodating chamber 4 and the outer wall of the inner cylinder 20. One end of the inner cylinder 20 is fixedly connected to the cylinder body 1 and communicated with the water inlet 11, and the other end is communicated with the accommodating chamber 4. Different from the solution in the aforementioned embodiment 1 in which the filter material 5 is filled between the side wall of the accommodating chamber 4 and the outer wall of the central tube 9, in this embodiment, the accommodating chamber 4 is provided with an inner cylinder 20, and the filter material 5 is filled in the inner cylinder 20 and between the side wall of the accommodating chamber 4 and the outer wall of the inner cylinder 20, making full use of the internal space and external space of the inner cylinder 20, as shown in FIG. Figure 8The arrows shown represent the filtration path of raw water from the water inlet 11 into the filter bottle until it is discharged from the water outlet 12. After entering the filter bottle, the raw water is first filtered by the filter material 5 inside the inner cylinder 20 before being filtered by the filter material 5 outside the inner cylinder 20. This long filtration path not only reduces the length and volume of the filter bottle, but also helps improve filtration performance and the utilization rate of the filter material 5. The interior space of the inner cylinder 20 is a regular space, and the side walls of the accommodating chamber 4 and the outer wall of the inner cylinder 20 also form a regular space. This helps to evenly distribute the granular filter material 5 within the interior and exterior spaces of the inner cylinder 20, and also helps the compacting element 3 simultaneously compact the filter material 5 within the interior and exterior spaces of the inner cylinder 20, thereby improving the filtration effect.

[0070] As a preferred embodiment of the embodiment, Figure 7 、 Figure 9 、 Figure 10 and Figure 12 As shown, the end of the inner cylinder 20 is provided with a guide rib 201 extending toward the bottom wall 2, and multiple guide ribs 201 are distributed at intervals along the circumference of the inner cylinder 20. A water passage 205 connecting the internal space of the inner cylinder 20 and the external space is formed between two adjacent guide ribs 201. The side of the guide rib 201 is against the inner wall of the cylinder body 1 to form a radial limit, and the edge of the compacting part 3 is provided with a guide groove 35 along the circumference that slides with the guide rib 201. In this solution, after entering the water inlet 11, the raw water is first filtered by the filter material 5 inside the inner cylinder 20 and then returned through the water passage 205 to enter the filter material 5 in the outer space of the inner cylinder 20 for filtration. Moreover, the side surface of the guide rib 201 abuts against the inner wall of the cylinder 1 to form a radial limit, preventing the inner cylinder 20 from deviating radially along the cylinder 1 and affecting the normal axial movement of the compacting member 3 along the cylinder 1. In addition, the edge of the compacting member 3 is provided with a guide groove 35 along the circumference that slides with the guide rib 201. The sliding fit between the guide rib 201 and the guide groove 35 provides guidance for the axial movement of the compacting member 3 along the cylinder 1, preventing the compacting member 3 from tilting and effectively improving the compaction effect on the filter material 5. Preferably, the end of the guide rib 201 can also abut against the bottom wall 2, so that the bottom wall 2 can also form an axial limit for the inner cylinder 20, preventing the inner cylinder 20 from moving axially along the cylinder 1. In addition, a stop limit surface 204 can be provided on the guide rib 201 to limit the movement limit position of the compacting member 3 during the compaction of the filter material 5. When the compacting member 3 reaches the position where it contacts the stop limit surface 204, it is ensured that the water passage 205 between adjacent guide ribs 201 still has a suitable flow area to connect the internal space of the inner cylinder 20 with the external space, thereby preventing the compacting member 3 from closing the internal space and the external space of the inner cylinder 20 separately and affecting the water flow. In addition, preferably, as Figure 11As shown, the cross-sectional area of ​​the inner cylinder 20 can be made substantially the same as the area of ​​the water passage 205, and the flux area of ​​the inner cylinder 20 can be designed to be similar to the flux area of ​​the water passage 205, so that no sudden change in flow rate occurs when the water flows back from the inside of the inner cylinder 20 to the outside, thereby reducing the flow resistance.

[0071] As a preferred embodiment of the embodiment, Figure 7 and Figure 13 As shown, along the central axis of the cylinder 1 pointing toward the bottom wall 2, the inner cylinder 20 includes an expansion section 202 with a gradually increasing inner diameter and a cylindrical section 203 connected to the expansion section 202. A positioning piece 30 with a through hole is provided at the junction of the expansion section 202 and the cylindrical section 203. One side of the positioning piece 30 is provided with a second filter element 40 for confining the filter material 5 in the inner cylinder 20 within the cylindrical section 203. It will be understood by those skilled in the art that the inner cylinder 20 includes the expansion section 202 and the cylindrical section 203, and the filter material 5 is confined within the cylindrical section 203. The gradual expansion structure of the expansion section 202 can buffer the raw water flow directly hitting the filter material 5 in a small area, reducing flow losses. At the same time, it can also make the raw water evenly diffuse to the filter material 5 in the entire cylindrical section 203, reducing flow resistance while increasing the contact area and contact time between water and the filter material 5, thereby improving filtration efficiency. The positioning piece 30 can be welded at the joint position of the expansion section 202 and the cylindrical section 203, and the second filter element 40 can also be welded on the positioning piece 30. The second filter element 40 can also be selected from filter cotton, mesh and other structures. To ensure that the raw water can flow smoothly from the expansion section 202 to the cylindrical section 203, the positioning piece 30 can be selected from an annular structure with multiple through holes evenly distributed circumferentially, which can not only support the second filter element 40, but also allow the raw water to be smoothly distributed in the cylindrical section 203 through the multiple through holes of the positioning piece 30.

[0072] As a preferred embodiment of the embodiment, Figure 7 、 Figure 8 and Figure 10As shown, the compacting member 3 and the bottom wall 2 enclose a water passage chamber 8, and the compacting member 3 is provided with a water passage hole 34 to connect the accommodating chamber 4 with the water passage chamber 8. It is understood by those skilled in the art that, since the compacting member 3 needs to move relative to the cylinder body 1, there will be a certain movable gap between the compacting member 3 and the cylinder body 1. The existence of the movable gap will cause part of the water in the accommodating chamber 4 to flow into the space between the compacting member 3 and the bottom wall 2, causing water accumulation, resulting in stagnant water in the water passage chamber 8. Therefore, this solution forms the water passage chamber 8 by enclosing the compacting member 3 and the bottom wall 2, and connects the accommodating chamber 4 with the water passage chamber 8 through the provision of the water passage hole 34, so that the water in the water passage chamber 8 and the water in the accommodating chamber 4 flow, and the water entering the water passage chamber 8 can also flow back to the accommodating chamber 4 through the water passage hole 34, thereby avoiding the formation of stagnant water in the water passage chamber 8 and the breeding of bacteria. In a preferred embodiment, the compacting member 3 may be connected to a filter member covering the water through hole 34 to prevent the filter material 5 in the accommodating cavity 4 from entering the water through hole 34 into the water through cavity 8 .

[0073] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0074] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0075] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A filter bottle of a water purifier, comprising a cylindrical body with a bottom wall, wherein an end of the cylindrical body away from the bottom wall is provided with a water inlet and a water outlet, characterized in that: A compacting piece is provided in the cylinder, and the compacting piece and the cylinder form a accommodating cavity, which is connected to the water inlet and the water outlet. Granular filter material is provided in the accommodating cavity, and an elastic piece is provided between the bottom wall and the compacting piece. One end of the elastic piece is connected to the bottom wall, and the other end is connected to the compacting piece. The elastic piece can apply a force to the compacting piece, so that the compacting piece moves along the axial direction of the cylinder to compress the filter material.

2. The filter bottle of the water purification filter according to claim 1, characterized in that: The elastic member is configured as a spring; The bottom wall is provided with a first limiting ring groove, and one end of the spring connected to the bottom wall is embedded in the first limiting ring groove. The compacting piece is provided with a second limiting ring groove, and one end of the spring connected to the compacting piece is embedded in the second limiting ring groove.

3. The filter bottle of the water purification filter according to claim 2, characterized in that: The first limiting ring groove and the second limiting ring groove are provided with limiting bosses extending toward each other respectively. The limiting bosses are configured as prismatic structures and abut against the inner wall of the elastic member through side edges.

4. The filter bottle of the water purification filter according to claim 1, characterized in that: The elastic member is configured as a spring; One end of the spring connected to the bottom wall is provided with a first abutting plane, the bottom wall is provided with a first matching plane, one end of the spring connected to the compression piece is provided with a second abutting plane, the compression piece is provided with a second matching plane, the first abutting plane, the first matching plane, the second abutting plane and the second matching plane are parallel and perpendicular to the central axis of the cylinder, the first abutting plane abuts against the first matching plane, and the second abutting plane abuts against the second matching plane, so that the central axis of the spring is parallel to or coincides with the central axis of the cylinder.

5. The filter bottle of the water purification filter according to claim 1, characterized in that: The bottom wall and the compacting piece enclose a water passage cavity, the compacting piece is provided with a central hole and a plurality of water passage holes distributed circumferentially around the central hole, a central tube is provided in the accommodating cavity, the filter material is filled between the side wall of the accommodating cavity and the outer wall of the central tube, one end of the central tube is fixedly connected to the cylinder and communicated with the water inlet, and the other end passes through the central hole, and the water in the central tube flows into the water passage cavity and into the filter material through the water holes.

6. The filter bottle of the water purification filter according to claim 5, characterized in that: The compacting member is connected to a first filter member covering the water hole to prevent the filter material from passing through the water hole and entering the water cavity.

7. The filter bottle of the water purification filter according to claim 1, characterized in that: An inner cylinder is provided in the accommodating cavity, and the filter material is filled in the inner cylinder and between the side wall of the accommodating cavity and the outer wall of the inner cylinder. One end of the inner cylinder is fixedly connected to the cylinder body and communicated with the water inlet, and the other end is communicated with the accommodating cavity.

8. The filter bottle of the water purification filter according to claim 7, characterized in that: The end of the inner cylinder is provided with a guide rib extending toward the bottom wall, and a plurality of the guide ribs are spaced apart along the circumference of the inner cylinder, and a water passage connecting the internal space of the inner cylinder and the external space is formed between two adjacent guide ribs. The side surfaces of the guide ribs abut against the inner wall of the cylinder to form a radial limit, and the edge of the compacting part is provided with a guide groove along the circumference that slides with the guide rib.

9. The filter bottle of the water purification filter according to claim 7, characterized in that: Along the central axis of the cylinder pointing to the bottom wall, the inner cylinder includes an expansion section with a gradually increasing inner diameter and a cylindrical section connected to the expansion section. A positioning piece with a through hole is provided at the joint position between the expansion section and the cylindrical section. A second filter element is provided on one side of the positioning piece for limiting the filter material in the inner cylinder to the cylindrical section.

10. The filter bottle of the water purification filter according to claim 7, characterized in that: The compacting piece and the bottom wall enclose a water passage cavity, and the compacting piece is provided with a water passage hole to connect the accommodating cavity with the water passage cavity.

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