Filter

Abstract

The filter comprises a filter box body, a filter assembly and a cover body assembly, a mounting cavity is formed in the filter box body, the filter assembly is arranged in the mounting cavity, and a water inlet channel and a water outlet channel are formed in the filter box body; the filtering assembly comprises a supporting pipe, a filtering piece and a floating rod, a water passing pipeline is arranged in the supporting pipe, and the filtering piece is fixedly connected to the side wall of the supporting pipe and used for filtering water flow; the floating rod is connected to the supporting pipe in a sliding mode in the axial direction, the floating rod and the supporting pipe are mutually restrained to keep a connection state, and the supporting pipe is detachably fixed in the filtering box body; a first opening is formed in the top of the filter box body, and the filter assembly can be mounted in the mounting cavity from the first opening and is located under the first opening; when the cover body assembly is installed at the first opening, the top of the floating rod abuts against the lower portion of the cover body assembly. And when the cover body assembly is detached from the first opening, the top of the floating rod can emerge from the water surface. According to the invention, a user can more conveniently extract the filter body from the water body.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment technology, and more particularly to a filter. Background Technology

[0002] Due to the presence of leftover food, fish waste, algae, and other factors, the water in aquariums can gradually become cloudy if no water quality intervention is performed over a long period, affecting the survival and visual appeal of the fish. Therefore, the common practice is to install a filter in the aquarium. The filter circulates and filters the water to remove cloudy impurities, ensuring that the water quality in the aquarium remains good.

[0003] In a typical filter, the filter is filled with water, submerging the filter media inside. Over time, the filter media becomes heavily contaminated by impurities in the water and needs to be replaced. However, when users want to remove the filter media, they need to dip their hands into the water to pick it up, resulting in a large area of ​​their hands coming into contact with the water, which is unhygienic and lacks a good user experience. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a filter that allows users to more easily remove the filter from the water without putting their hands in the water, ensuring hand hygiene and a better user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention discloses a filter, including a filter housing, a filter assembly, and a cover assembly. The filter housing has a mounting cavity, and the filter assembly is disposed within the mounting cavity. The filter housing has an inlet channel and an outlet channel communicating with the mounting cavity. The filter assembly includes a support pipe, a filter element, and a float. The support pipe has a water passage connecting the inlet channel and the outlet channel. The filter element is fixedly connected to the side wall of the support pipe and located between the water passage and the outlet channel, and is used to filter water flow. The float is slidably connected axially to... The support tube and the float are mutually constrained to maintain a connection. The support tube is detachably fixed to the filter box. The top of the filter box has a first opening for installing the cover assembly. The first opening communicates with the mounting cavity. The filter assembly can be installed into the mounting cavity through the first opening and is located directly below the first opening. When the cover assembly is installed at the first opening, the top of the float abuts against the bottom of the cover assembly. When the cover assembly is removed from the first opening, the top of the float can float above the water surface.

[0007] Preferably, the float has at least one of the characteristics of A, B, and C:

[0008] A: The float is made of a material with a density less than that of water;

[0009] B: The float is equipped with a closed cavity or a foam plug;

[0010] C: An elastic element is provided between the float and the support tube, and the elastic element is used to drive the float away from the support tube.

[0011] Preferably, the bottom of the support pipe is provided with a mounting bottom hole, which communicates with the water pipe; the mounting cavity includes a first sub-cavity, and the bottom of the first sub-cavity is provided with a mounting platform; wherein, the diameter of the mounting bottom hole gradually increases in the axial downward direction, and when the filter assembly is installed in the first sub-cavity through a clearance fit between the mounting bottom hole and the mounting platform, the gap between the inner wall of the first sub-cavity and the filter element is less than the difference between the diameter at the port of the mounting bottom hole and the outer diameter of the mounting platform.

[0012] Preferably, the water pipe extends axially through the support pipe to form an upper opening at the upper end and an installation bottom hole at the lower end; the float is slidably connected to the upper opening; the bottom of the mounting cavity is provided with a mounting platform, and the mounting platform is provided with a water flow channel connecting the water inlet channel and the installation bottom hole; the installation bottom hole is connected to the water pipe; when the filter assembly is placed in the mounting cavity, the mounting platform engages with the installation bottom hole; a water-passing window is opened on the side wall of the support pipe, the water-passing window is connected to the water pipe, and the filter element blocks the water-passing window.

[0013] Preferably, the float has a bottom opening, which is coaxially arranged with the water passage pipe; the float has a sliding groove on its side wall, which communicates with the bottom opening and is arranged opposite to at least a portion of the water passage window in the radial direction of the float.

[0014] Preferably, the cover assembly includes a cover and a water pump. The water pump is installed at the bottom of the cover, the cover is installed at the first opening, the outlet of the water pump is connected to the water outlet channel, the inlet of the water pump is located at the bottom of the water pump, and a plurality of grid baffles are provided downwardly around the inlet of the water pump. Each of the grid baffles is spaced apart circumferentially along the inlet. When the cover assembly is installed at the first opening, the top of the float abuts against the grid baffles.

[0015] Preferably, the side wall of the float has a sliding groove along the axial direction, and a limiting post is provided on the support tube. The limiting post passes through the sliding groove to limit the extension distance of the float relative to the support tube.

[0016] Preferably, the support pipe includes a support pipe body and a top component. The top component includes a top plate and a collar. The collar is connected between the top plate and the support pipe body. The top plate and the collar together form a central through hole along the axial direction to connect the water pipe. The float rod passes through the central through hole. The edge of the top plate is bent downward to form a folded edge. A notch is opened on the folded edge. The limiting post is inserted into the collar through the notch to pass through the central through hole and the sliding groove. The top plate is threaded to the collar. The top plate can rotate relative to the collar so that the notch is misaligned with the axis of the limiting post.

[0017] Preferably, the outer wall of the float is provided with multiple ribs extending axially, and the float abuts against the inner wall of the support tube through the multiple ribs.

[0018] Preferably, the side wall of the support pipe has a water passage window, the water passage window is connected to the water passage pipe, and the filter element blocks the water passage window; wherein, at least some of the water passage windows are arranged at intervals along the axial direction, the support pipe forms a support plate between two adjacent water passage windows at intervals along the axial direction, and the rib is facing the water passage window and connected to the support plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The filter disclosed in the present invention has a filter element fixed on a support tube. A float is slidably connected to the support tube along the axial direction, and the float and the support tube are always connected. The support tube and the filter box are detachably connected. When the cover assembly is removed from the first opening, the top of the float floats to the water surface. At this time, the float floats up, which can coordinate the connection constraint relationship between the float and the support tube and the detachable fixing relationship between the support tube and the filter box. This allows the user to lift the float and remove the entire support tube from the filter, so that the user can more easily pull the filter element out of the water without putting their hands into the water, thus ensuring hand hygiene and user experience.

[0020] Other beneficial effects of the embodiments of the present invention will be further described below. Attached Figure Description

[0021] Figure 1 This is a top view of the filter according to a preferred embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0023] Figure 3 This is a schematic diagram of the cover assembly disassembled from the filter;

[0024] Figure 4This is a schematic diagram of the filter assembly;

[0025] Figure 5 This is a schematic diagram showing the float extending above the water surface relative to the first support pipe;

[0026] Figure 6 This is an assembly diagram of the first support pipe, float, and mounting platform;

[0027] Figure 7 This is a schematic diagram of the disassembly structure of the support pipe body, top component, and float.

[0028] Figure 8 This is another perspective schematic diagram of the disassembly structure of the support pipe body, top component, and float;

[0029] Figure 9 This is a schematic diagram of the structure of the limiting post inserted into the top component;

[0030] Figure 10 This is a schematic diagram showing the connection status between the first support pipe and the float.

[0031] Figure 11 yes Figure 10 Enlarged diagram of point B in the middle.

[0032] Explanation of icon numbers:

[0033] 10. Filter housing; 11. Mounting cavity; 111. First sub-cavity; 112. Second sub-cavity; 113. Third sub-cavity; 114. Partition; 115. Mounting platform; 12. Water inlet channel; 13. Water outlet channel; 14. First opening;

[0034] 20. Filter assembly; 21. First support tube; 211. Support tube body; 2111. Water passage pipe; 2112. Mounting bottom hole; 2113. Top opening; 2114. Water passage window; 2115. Limiting post; 2116. Support plate; 2117. Buckle; 212. Top component; 2121. Top plate; 2122. Collar; 2123. Central through hole; 2124. Folded edge; 2125. Notch; 2126. Locking hole; 22. First filter element; 23. Float rod; 231. Float rod body; 2311. Sliding groove; 2312. Rib; 2313. Bottom opening; 2314. Gap; 232. Float rod handle; 24. Elastic element; 25. Second support tube; 26. Second filter element; 27. Mounting bottom tube; 28. Filter screen barrel;

[0035] 30. Cover assembly; 31. Cover; 32. Water pump; 321. Grille baffle. Detailed Implementation

[0036] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for both fixing and circuit / signal connectivity.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] like Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention discloses a filter, including a filter housing 10, a filter assembly 20, and a cover assembly 30. The filter housing 10 has a mounting cavity 11, and the filter assembly 20 is disposed within the mounting cavity 11. The filter housing 10 has an inlet channel 12 and an outlet channel 13 communicating with the mounting cavity 11. The filter assembly 20 includes a first support pipe 21, a first filter element 22, and a float 23. The first support pipe 21 has a water passage 2111 connecting the inlet channel 12 and the outlet channel 13. The first filter element 22 is fixedly connected to the side wall of the first support pipe 21 and located between the water passage 2111 and the outlet channel 13. The first filter element 22 is used to filter water flow. The float 23 is axially slidably connected to the first support pipe 21, and the float 23 and the first support pipe 21 are mutually constrained to maintain the connection. The first support pipe 21 is detachably fixed within the filter housing 10. (Reference) Figure 3The top of the filter housing 10 has a first opening 14 for installing the cover assembly 30. The first opening 14 communicates with the mounting cavity 11. The filter assembly 20 can be installed into the mounting cavity 11 through the first opening 14 and is located directly below the first opening 14. When the cover assembly 30 is installed at the first opening 14, the top of the float 23 rests against the bottom of the cover assembly 30. When the cover assembly 30 is removed from the first opening 14, the top of the float 23 can float out of the water.

[0041] The cover assembly 30 includes a cover 31 and a water pump 32. The water pump 32 is installed at the bottom of the cover 31, and the cover 31 is installed at the first opening 14. The outlet of the water pump 32 is connected to the water outlet channel 13, and the inlet of the water pump 32 is located at the bottom of the water pump 32. Multiple grid baffles 321 are provided downwardly around the inlet of the water pump 32, and each grid baffle 321 is spaced apart circumferentially around the inlet. When the cover assembly 30 is installed at the first opening 14, the top of the float 23 abuts against the grid baffles 321, preventing the float 23 from blocking the inlet of the water pump 32 when it floats up, allowing water to enter the water pump 32 through the gaps between the grid baffles 321. In this embodiment, the cover 31 and the water pump 32 are integrally fixed and can be disassembled and reassembled simultaneously. The cover 31 is installed at the first opening 14. The user can remove the cover 31 and the water pump 32, and then the first support pipe 21, the first filter body 22 and the float 23 will be exposed from the first opening 14. The user can reach in and take out the first support pipe 21, the first filter body 22 and the float 23 to replace the first filter body 22. In this application, the water level in the filter typically reaches or even overflows the water pump 32. Since the first support pipe 21 is located below the water pump 32, without a float 23 on the first support pipe 21, the user would have to reach into the water to retrieve the filter, resulting in extensive hand immersion. However, by connecting a float 23 to the first support pipe 21, when the cover 31 and water pump 32 are removed, the top of the float 23 floats above the water. When the user needs to replace the first filter element 22, they simply need to grasp the top of the float 23. The first support pipe 21, which is bound to the float 23 to maintain the connection, and the first filter element 22, fixed to the side wall of the first support pipe 21, can be removed together without needing to submerge their hands, ensuring hand hygiene and a better user experience. The cover 31 can be, for example, a screw cap, installed at the first opening 14 via a knob.

[0042] In a specific embodiment, the mounting cavity 11 of the filter includes a first sub-cavity 111, a second sub-cavity 112, and a third sub-cavity 113, with a partition 114 between the first sub-cavity 111 and the second sub-cavity 112; the filter assembly 20 also includes a second support tube 25, a second filter element 26, a mounting bottom tube 27, and a filter screen barrel 28, wherein the first support tube 21, the first filter element 22, and the float 23, which are connected to each other, are installed in the first sub-cavity 111, the second filter element 26 is fixedly connected to the side wall of the second support tube 25, the second support tube 25 and the second filter element 26, which are connected to each other, are installed in the second sub-cavity 112, the mounting bottom tube 27 is located at the bottom of the first sub-cavity 111 and the second sub-cavity 112 to connect the second support tube 25 and the first support tube 21, and the filter screen barrel 28 is installed in the third sub-cavity 113. This filter can be used in aquariums. When the filter is placed in the aquarium, the water in the aquarium enters the filter through the inlet channel 12, and the water flows along... Figure 2 The red path shown passes sequentially through the filter canister 28, the second filter element 26, the second support tube 25, the mounting base tube 27, the first support tube 21, the first filter element 22, and the water pump 32, finally flowing from the outlet of the water pump 32 to the outlet channel 13 and back into the fish tank. The filter canister 28 is a barrel-shaped structure with a fine array of pores, detachably installed at the inlet of the third sub-cavity 113, used to filter larger particles in the water, extending the lifespan of the subsequent filter media.

[0043] Combination Figures 4 to 6 The first support tube 21 includes a support tube body 211 and a top component 212, with the top component 212 connected to the top of the support tube body 211; the float 23 includes a float body 231 and a float handle 232, with the float handle 232 connected to the top of the float body 231; the float body 232 is slidably connected within the support tube body 211 and is constrained by it and cannot be completely detached.

[0044] The float 23 may have at least one of the characteristics of A, B, and C, so that the float 23 can float up under the action of buoyancy.

[0045] A: The float 23 is made of a material with a density less than that of water. The float body 231 and the float handle 232 are both made of a material with a density less than that of water, so that the float 23 can float above the water surface at least when there is no pressure on the top.

[0046] B: A closed cavity or foam plug is formed inside any position of the float 23; generally, a closed cavity is formed or a foam plug is installed inside any position of the float body 232 to increase buoyancy.

[0047] C: An elastic element 24 is provided between the float 23 and the first support tube 21. The elastic element 24 is used to drive the float 23 away from the first support tube 21. The elastic element 24 is, for example, a telescopic spring. The telescopic spring is fixed between the top part 212 and the float handle 232, so that the float handle 232 can extend out of the water surface instead of just floating on the water surface, making it more convenient for the user to pick up.

[0048] By designing the float 23 to possess at least one of the features A, B, and C above, the float 23 can rise under the action of buoyancy after the water pump 32 is removed, with the float handle 232 floating above the water surface or even extending above it. In some embodiments, buoyancy drive (the float 23 possesses features A and / or B) can be primarily employed, while the elastic element (the float possesses feature C) can be used only as an auxiliary means to help the float overcome static friction or provide a greater stroke. Where the float 23 possesses features A and / or B, the buoyancy provided by the float 23 should be greater than the weight of the float 23 itself.

[0049] Combination Figures 6 to 8The bottom of the support tube body 211 is provided with a mounting bottom hole 2112, which is connected to the water pipe 2111. The bottom of the mounting cavity 11 is provided with a mounting platform 115. When the filter assembly 20 is placed in the mounting cavity 11, the mounting platform 115 engages with the mounting bottom hole 2112. The mounting platform 115 is located at the bottom of the first sub-cavity 111, for example, at the top of the mounting bottom tube 27 located in the first sub-cavity 111. The diameter of the mounting bottom hole 2112 gradually increases in the axial downward direction. For example, the mounting bottom hole 2112 can be an approximately trumpet-shaped structure formed by the bottom of the support tube body 211. The first support tube 21 and the mounting bottom tube 27 are directly installed through a clearance fit between the mounting bottom hole 2112 and the mounting platform 115. The clearance fit can be such that a small gap is maintained at the connection between the mounting bottom hole 2112 and the mounting platform 115 to facilitate disassembly and assembly, or the two can be connected with damping. When the user lifts the float handle 232 beyond the constrained height, it can cause the first support tube 21 to detach from the mounting platform 115, thereby lifting the entire unit. Furthermore, when the first support tube 21 and its first filter element 22 are installed in the first sub-cavity 111 through a clearance fit between the mounting bottom hole 2112 and the mounting platform 115, the width of the first sub-cavity 111 is slightly larger than the outer diameter of the first filter element 22. For example, the gap between the inner wall of the first sub-cavity 111 and the first filter element 22 is smaller than the difference between the diameter of the bottom port of the mounting bottom hole 2112 and the outer diameter of the mounting platform 115. This allows the cavity wall of the first sub-cavity 111 to provide a certain guiding effect when the first support tube 21 with the first filter element 22 replaced is reinstalled into the first sub-cavity 111, ensuring that the mounting bottom hole 2112 is approximately aligned with the mounting platform 115. Subsequently, during the process of the user installing the cover assembly 30, the bottom of the water pump 32 will press against the float handle 232 and move downward, then press against the top part 212 of the first support tube 21, causing the first support tube 21 to move downward as a whole, and finally the installation bottom hole 2112 will be inserted into the installation platform 115 to complete the installation. At the same time, the cover 31 in the cover assembly 30 will also be installed by turning the knob.

[0050] In some embodiments, the mounting hole 2112 and the mounting platform 115 can also be magnetically connected, that is, magnets are embedded in the mounting platform 115 and the mounting hole 2112 to attract each other using magnetic force.

[0051] The water pipe 2111 passes through the first support pipe 21 axially to form an upper opening 2113 at the upper end and an installation bottom hole 2112 at the lower end. That is, the upper opening 2113 and the installation bottom hole 2112 are connected to the water pipe 2111. The float 23 is slidably connected to the upper opening 2113. The mounting platform 115 is provided with a water flow channel connecting the water inlet channel 12 and the installation bottom hole 2112. For example, the top of the mounting platform 115 is open, so that the water flow can be directly discharged from the installation bottom pipe 27 into the water pipe 2111 of the support pipe body 211. A water window 2114 is opened on the side wall of the support pipe body 2111. The water window 2114 is connected to the water pipe 2111. The first filter element 22 blocks the water window 2114. The float body 231 has a bottom opening 2313, which is coaxially arranged with the water pipe 2111; the float body 23 has a sliding groove 2311 on its side wall, which is connected to the bottom opening 2313. The sliding groove 2311 is arranged opposite to at least part of the water window 2114 in the radial direction of the float 23. From the installation base pipe 27 to the water pump 32, the water first flows from the installation base pipe 27 through the opening at the top of the installation platform 115 into the water pipe 2111, and then through the water window 2114 into the first filter element 22 for filtration. The filtered water flows through the gap between each grid baffle 321 into the water inlet of the water pump 32. The float body 231 is a hollow pipe structure. When the water flow in the water pipe 2111 rises, it will also enter the float body 231 from the bottom opening 2313, and pass through the sliding groove 2311 opened on the side wall of the float body 231 to reach the water window 2113 opened on the side wall of the support pipe body 211, and then further pass through the first filter element 22 to increase the water flow rate.

[0052] The sidewall of the float 23 has an axially oriented sliding groove 2311. A limiting post 2115 passes through the first support tube 21, and the limiting post 2115 passes through the sliding groove 2311 to limit the extension distance of the float 23 relative to the first support tube 21. The top component 212 of the first support tube 21 is detachably mounted on the top of the support tube body 211. For example, the top component 212 has a locking hole 2126, and the support tube body 211 has a buckle 2117. The top component 212 is detachably mounted on the top of the support tube body 211 by the interlocking of the locking hole 2126 and the buckle 2117. Figure 9The top component 212 includes a top plate 2121 and a collar 2122. The collar 2122 is connected between the top plate 2121 and the support pipe body 211. The top plate 2121 and the collar 2122 together form a central through hole 2123 along the axial direction to connect the water pipe 2111. The float 23 passes through the central through hole 2123. The edge of the top plate 2121 is bent downward to form a folded edge 2124. A notch 2125 is opened on the folded edge 2124. The limiting post 2115 is inserted into the collar 2122 through the notch 2125 to pass through the central through hole 2123 and the sliding groove 2311 to guide the float 23 and constrain the maximum floating stroke, that is, to form a constraint between the float 23 and the first support pipe 21 so that the two always remain connected. In a further embodiment, the top plate 2121 is threadedly connected to the collar 2122. The top plate 2121 can rotate relative to the collar 2122 so that the notch 2125 is misaligned with the axis of the limiting post 2115. Thus, after the float 23 passes through the top plate 2121 and the collar 2122 and is inserted into the limiting post 2115, the top plate 2121 can rotate relative to the limiting post 2115 so that the notch 2125 is rotated to a position that is not directly opposite the limiting post 2115, thereby preventing the limiting post 2115 from sliding out of the notch 2125 due to water flow impact.

[0053] Combination Figure 10 and Figure 11 The outer wall of the float body 231 is provided with multiple ribs 2312 extending axially. The float body 231 abuts against the inner wall of the support pipe body 211 through the multiple ribs 2312 to reduce friction and improve the smoothness of sliding of the float 23 in the first support pipe 21. At least some of the water passage windows 2114 are arranged at intervals along the axial direction. The support pipe body 211 forms a support plate 2116 between two adjacent water passage windows 2114 at intervals along the axial direction. The ribs 232 face the water passage windows 2114 and are connected to the support plate 2116, which can further reduce the contact area of ​​the ribs 2312 and reduce sliding friction. After the ribs 2312 are set, a gap 2314 is formed between the float body 231 and the inner wall of the support pipe body 211, which allows water to flow through and reach the water passage windows 2114, and finally pass through the first filter body 22, thereby increasing the water flow rate.

[0054] In some further embodiments, the area distribution of the water passage window 2114 can be designed to gradually decrease from top to bottom so that the water flow passes evenly through each layer of the first filter element 22; or, a guide plate or flow equalization plate can be installed in the water passage pipe 2111 to guide the water flow evenly to each water passage window 2114.

[0055] In this embodiment, the first filter element 22 and the second filter element 26 are respectively a series of stacked annular filter cotton or culture bricks. The main purpose of the culture bricks is as a filter material for aquariums, which can purify water quality and provide a good living environment for fish. Culture bricks usually contain nitrifying bacteria, which can decompose harmful substances in the aquarium and maintain the cleanliness and stability of the water quality.

[0056] The filter disclosed in the preferred embodiment of the present invention has a first filter body 22 fixed on a first support tube 21. A float 23 is slidably connected to the first support tube 21 along the axial direction. The float 23 has a density less than that of water and / or an elastic element is provided between the float 23 and the first support tube. Under the action of buoyancy and / or elasticity, the float 23 can float out of the first support tube 21 to the water surface. The user can lift the float 23 to remove the entire first support tube 21 and the first filter body 22 from the filter. This allows the user to more easily remove the first filter body from the water without putting their hands into the water, ensuring hand hygiene and user experience.

[0057] The background section of this invention may include background information about the problems or circumstances surrounding the invention, rather than a description of prior art by others. Therefore, the content included in the background section is not an admission of prior art by the applicant.

[0058] The above description provides a further detailed explanation of the present invention in conjunction with specific / preferred embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the scope of protection of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification without contradiction. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope defined by the appended claims.

Claims

1. A filter, characterized in that, It includes a filter housing, a filter assembly, and a cover assembly, wherein, The filter box is provided with an installation cavity, the filter assembly is disposed in the installation cavity, and the filter box is provided with an inlet channel and an outlet channel communicating with the installation cavity. The filter assembly includes a support pipe, a filter element, and a float. The support pipe has a water passage connecting the water inlet channel and the water outlet channel. The filter element is fixedly connected to the side wall of the support pipe and located between the water passage and the water outlet channel. The filter element is used to filter the water flow. The float is slidably connected to the support pipe along the axial direction, and the float and the support pipe are mutually constrained to maintain the connection. The support pipe is detachably fixed inside the filter box. The top of the filter housing has a first opening for installing the cover assembly. The first opening communicates with the mounting cavity. The filter assembly can be installed into the mounting cavity through the first opening and is located directly below the first opening. When the cover assembly is installed at the first opening, the top of the float abuts against the bottom of the cover assembly. When the cover assembly is removed from the first opening, the top of the float can float out of the water.

2. The filter according to claim 1, characterized in that, The float has at least one of the characteristics of A, B, and C: A: The float is made of a material with a density less than that of water; B: The float is equipped with a closed cavity or a foam plug; C: An elastic element is provided between the float and the support tube, and the elastic element is used to drive the float away from the support tube.

3. The filter according to claim 1, characterized in that, The bottom of the support tube is provided with a mounting bottom hole, which communicates with the water pipe; the mounting cavity includes a first sub-cavity, and the bottom of the first sub-cavity is provided with a mounting platform; wherein, the diameter of the mounting bottom hole gradually increases in the axial downward direction, and when the filter assembly is installed in the first sub-cavity through the mounting bottom hole and the mounting platform with a clearance fit, the gap between the inner wall of the first sub-cavity and the filter element is smaller than the difference between the diameter of the mounting bottom hole at the port and the outer diameter of the mounting platform.

4. The filter according to claim 1, characterized in that, The water pipe extends axially through the support pipe to form an upper opening at the top and an installation bottom hole at the bottom; the float is slidably connected to the upper opening; the bottom of the mounting cavity is provided with a mounting platform, and the mounting platform has a water flow channel connecting the water inlet channel and the installation bottom hole; the installation bottom hole is connected to the water pipe; when the filter assembly is placed in the mounting cavity, the mounting platform engages with the installation bottom hole; a water passage window is opened on the side wall of the support pipe, the water passage window is connected to the water pipe, and the filter element blocks the water passage window.

5. The filter according to claim 4, characterized in that, The float has a bottom opening, which is coaxially arranged with the water passage pipe; the float has a sliding groove on its side wall, which communicates with the bottom opening and is arranged radially opposite to at least part of the water passage window.

6. The filter according to claim 1, characterized in that, The cover assembly includes a cover and a water pump. The water pump is installed at the bottom of the cover, and the cover is installed at the first opening. The outlet of the water pump is connected to the water outlet channel. The inlet of the water pump is located at the bottom of the water pump, and multiple grid baffles are provided downwardly around the inlet of the water pump. Each grid baffle is spaced apart circumferentially along the inlet. When the cover assembly is installed at the first opening, the top of the float abuts against the grid baffle.

7. The filter according to claim 1, characterized in that, The side wall of the float has a sliding groove along the axial direction, and a limiting post is provided on the support tube. The limiting post passes through the sliding groove to limit the extension distance of the float relative to the support tube.

8. The filter according to claim 7, characterized in that, The support pipe includes a support pipe body and a top component. The top component includes a top plate and a collar. The collar is connected between the top plate and the support pipe body. The top plate and the collar together form a central through hole along the axial direction to connect the water pipe. The float rod passes through the central through hole. The edge of the top plate is bent downward to form a folded edge. A notch is opened on the folded edge. The limiting post is inserted into the collar through the notch to pass through the central through hole and the sliding groove. The top plate is threaded to the collar. The top plate can rotate relative to the collar so that the notch is misaligned with the axis of the limiting post.

9. The filter according to claim 1, characterized in that, The outer wall of the float is provided with multiple ribs extending axially, and the float abuts against the inner wall of the support tube through the multiple ribs.

10. The filter according to claim 9, characterized in that, The side wall of the support pipe has a water passage window, which is connected to the water passage pipe. The filter element blocks the water passage window. At least some of the water passage windows are arranged at intervals along the axial direction. The support pipe forms a support plate between two adjacent water passage windows at intervals along the axial direction. The rib is directly opposite the water passage window and connected to the support plate.

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