filter

Abstract

The utility model discloses a filter, including filter box, dirt accumulation bucket, filter component, be equipped with water inlet pipe and water outlet pipe on the filter box, form filter cavity in the filter box, filter component is located the filter cavity, dirt accumulation bucket is installed on the filter box, form depositing space in the dirt accumulation bucket, be equipped with filter screen bucket and spiral flow guide plate in the depositing space, spiral flow guide plate is covered and is located the outer wall of filter screen bucket to form spiral flow channel in the depositing space, the bottom of depositing space is equipped with blowdown, the inboard of filter screen bucket with filter cavity intercommunication, filter screen bucket passes through filter screen structure and is connected with depositing space, water inlet pipe with the inboard of filter screen bucket intercommunication, water outlet pipe with filter cavity intercommunication. The filter that the utility model puts forward can avoid that the big granular dirt is smashed and reaches filter material to enter filter screen bucket, is helpful to increase the filter material life of filter.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular 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] For a typical filter, the aquarium water is filtered only through the filter cotton inside the filter. However, in addition to fine impurities, there are also large particles of fish feces and other dirt in the water. These large particles of dirt can easily clog the filter cotton, resulting in reduced water flow, decreased filtration flow, and failure of physical filtration.

[0004] Therefore, a sludge collection tank is usually set up in the primary filtration channel of a filter, and a filter screen is installed in the tank. However, when the power of the water pump increases, the flow rate entering the filter cylinder from the inlet will increase, and the water flow will be relatively chaotic and disordered with a large impact force. This will cause large particles of dirt to break into smaller particles, which will then be sucked into the holes of the filter screen and reach the filter media. This will cause the filter media to get dirty quickly and reduce its service life. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes a filter that can prevent large particles of dirt from being crushed and entering the filter screen and reaching the filter media, thus helping to increase the filter media's lifespan.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model discloses a filter, including a filter box, a sludge collection bucket, and a filter assembly. The filter box is provided with an inlet pipe and an outlet pipe, and a filter chamber is formed in the filter box. The filter assembly is disposed in the filter chamber, and the sludge collection bucket is installed on the filter box, forming a sedimentation space. A filter screen bucket and a spiral guide plate are provided in the sedimentation space. The spiral guide plate is sleeved on the outer wall of the filter screen bucket to form a spiral flow channel in the sedimentation space. A drain outlet is provided at the bottom of the sedimentation space. The inner side of the filter screen bucket is connected to the filter chamber, and the filter screen bucket is connected to the sedimentation space through a filter screen structure. The inlet pipe is connected to the outer side of the filter screen bucket, and the outlet pipe is connected to the filter chamber.

[0008] Preferably, a water-passing plate is provided between the sludge collection bucket and the filter box, the filter screen bucket is fixed on the water-passing plate, the water-passing plate has water-passing holes, the upper end through hole of the filter screen bucket communicates with the water-passing holes, the water-passing holes communicate with the filter chamber, the water inlet pipe communicates with the sedimentation space through the water-passing plate, and the spiral guide plate extends spirally from the upper end of the filter screen bucket to the lower end of the filter screen bucket.

[0009] Preferably, the water-passing plate is provided with a bent flow channel, the bent flow channel is connected to the water inlet pipe, and the outlet of the bent flow channel is located above the spiral flow channel and opened along the direction of the spiral flow channel.

[0010] Preferably, the upper end of the spiral guide plate is fixedly connected to the water-passing plate.

[0011] Preferably, the filter further includes a mounting cover, which is fixedly connected to the filter box, and the sludge collection bucket is detachably connected to the mounting cover. The mounting cover has a water outlet communicating with the filter chamber. The water-passing plate is located at the bottom of the mounting cover, and the water-passing hole is sleeved and fixed to the water outlet. The upper end of the filter screen bucket is sleeved and fixed to the water-passing hole. The water outlet end of the water inlet pipe is fixed to the mounting cover and communicates with the sedimentation space through the water-passing plate.

[0012] Preferably, the inner edge of the spiral guide plate abuts against the outer wall of the filter screen bucket, and / or the outer edge of the spiral guide plate abuts against the inner wall of the sludge collection bucket.

[0013] Preferably, a first flange extends axially from the inner edge of the spiral guide plate, and the spiral guide plate is fitted onto the outer wall of the filter screen bucket through the first flange; and / or, a second flange extends axially from the outer edge of the spiral guide plate, and the outer wall of the second flange abuts against the inner wall of the sludge collection bucket.

[0014] Preferably, the filter further includes a first elastic strip, wherein the inner wall of the first flange abuts against the outer wall of the filter screen bucket via the first elastic strip; and / or, the filter further includes a second elastic strip, wherein the outer wall of the second flange abuts against the inner wall of the sludge collection bucket via the second elastic strip.

[0015] Preferably, the spiral guide plate is made of a malleable material so that the overall height of the spiral guide plate can be adjusted when the spiral guide plate is fitted onto the outer wall of the filter barrel.

[0016] Preferably, the spiral guide plate is formed by a spirally arranged zigzag plate, which is composed of multiple flat plates and multiple inclined plates connected in sequence.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The filter proposed in this utility model has an inlet pipe connected to the outside of the filter screen barrel, allowing the water from the inlet pipe to first enter the outside of the filter screen barrel inside the sludge collection bucket. The water then flows along the spiral flow channel formed by the spiral guide plate fitted on the outer wall of the filter screen barrel towards the bottom of the sludge collection bucket. The spiral channel guides the water flow, making the flow more orderly and slowing down the flow rate. Large particles are thrown outwards due to centrifugal force and eventually accumulate and deposit at the bottom of the spiral channel, while some water flows radially inwards through the filter screen barrel and enters the filter media of the filter assembly in the filter chamber for fine filtration. This prevents large particles from being crushed and entering the filter screen barrel before reaching the filter media of the filter assembly, thus helping to increase the filter media's lifespan.

[0018] In a further embodiment, this utility model also has the following beneficial effects:

[0019] (1) The water flow plate is provided with a bent flow channel, and the outlet of the bent flow channel is located above the spiral flow channel and opened along the direction of the spiral flow channel. This allows the water flow from the outlet of the bent flow channel to flow directly down the spiral flow channel and spiral around the filter screen bucket. By guiding the direction of the water flow, the direct impact on the spiral guide plate is reduced.

[0020] (2) The inner edge of the spiral guide plate abuts against the outer wall of the filter screen bucket and / or the outer edge of the spiral guide plate abuts against the inner wall of the sludge collection bucket, which can prevent water from directly seeping downwards along the gap between the spiral guide plate and the filter screen bucket or the sludge collection bucket. Furthermore, a flange can be provided at the edge of the spiral guide plate corresponding to the abutment position, thereby increasing the contact area between the spiral guide plate and the filter screen bucket and / or the sludge collection bucket, making the abutment between the spiral guide plate and the outer wall of the filter screen bucket and / or the inner wall of the sludge collection bucket more stable. Even further, an elastic element is provided at the abutment position to further prevent water from directly seeping downwards along the gap between the spiral guide plate and the filter screen bucket or the sludge collection bucket.

[0021] (3) The spiral guide plate is formed by spirally arranged broken plate. The broken plate is composed of multiple flat plates and multiple inclined plates connected in sequence, sinking in a spiral shape. This structure can increase the resistance of the spiral flow channel, reduce the flow velocity, and avoid large particles of dirt being crushed due to excessive flow velocity.

[0022] Other beneficial effects of the embodiments of this utility model will be further described below. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the filter according to a preferred embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A cross-sectional view of the filter;

[0025] Figure 3 This is a schematic diagram of the internal structure and connection structure of the sludge collection bucket;

[0026] Figure 4 This is a schematic diagram of the structure of the sludge collection bucket connected to the mounting cover;

[0027] Figure 5 This is a schematic diagram of the internal structure of the sludge collection bucket;

[0028] Figure 6 This is a cross-sectional view of the sludge collection bucket;

[0029] Figure 7 This is a schematic diagram of the spiral guide plate.

[0030] Explanation of icon numbers:

[0031] 10. Filter box; 11. Inlet pipe; 12. Outlet pipe; 13. Filter chamber; 14. Clip;

[0032] 20. Sludge collection bin; 21. Sedimentation space; 211. Drain outlet; 212. Funnel structure; 213. Silicone plug; 22. Filter screen bucket; 23. Spiral guide plate; 231. Spiral flow channel; 232. First flange; 233. Bending plate; 2331. Flat plate; 2332. Sloping plate; 234. Locking block; 24. Installation step;

[0033] 30. Filter assembly; 31. First filter element; 32. First pipe; 33. Second filter element; 34. Second pipe; 35. Bottom pipe; 36. Water pump;

[0034] 40. Water flow plate; 41. Water flow hole; 42. Bend flow channel; 43. Clip hole;

[0035] 50. Mounting cover; 51. Water outlet; 52. Threaded knob. Detailed Implementation

[0036] The embodiments of this utility model are 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 this utility model.

[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 this utility model 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 this utility model.

[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 this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] like Figure 1 and Figure 2 As shown, a preferred embodiment of this utility model discloses a filter, including a filter box 10, a sludge collection bucket 20, and a filter assembly 30. The filter box 10 is provided with an inlet pipe 11 and an outlet pipe 12, forming a filter chamber 13. The filter assembly 30 is disposed in the filter chamber 13, and the sludge collection bucket 20 is installed on the filter box 10. This filter can be hung on the outside of the glass wall of the aquarium via hooks 14, while the inlet pipe 11 and outlet pipe 12 are located inside the aquarium to achieve water inlet and outlet. The sludge collection bucket 20, which has a preliminary filtration function, is integrated at the water inlet end of the filter. The sludge collection bucket 20 first filters large particles of fish feces and other waste, which are deposited in the sludge collection bucket 20. The coarsely filtered water then enters the filter assembly 30 in the subsequent filter chamber 13 through the filter screen bucket 22 for further filtration, and is then circulated back into the aquarium. Both the inlet pipe 11 and the outlet pipe 12 are fixed to the filter box 10, for example, fixed to the side wall of the filter box 10; and both the inlet pipe 11 and the outlet pipe 12 are connected to the filter chamber 13 so that a water flow channel is formed between the inlet pipe 11 and the outlet pipe 12.

[0041] The sludge collection tank 20 forms a sedimentation space 21, which contains a filter screen 22 and a spiral guide plate 23. The spiral guide plate 23 is fitted onto the outer wall of the filter screen 22 to form a spiral flow channel 231 within the sedimentation space 21. A drain outlet 211 is located at the bottom of the sedimentation space 21. The inner side of the filter screen 22 is connected to the filter chamber 13, and the filter screen 22 is connected to the sedimentation space 21 via a filter structure. An inlet pipe 11 is connected to the outer side of the filter screen 22, and an outlet pipe 12 is connected to the filter chamber 13. The filter screen 22 is, for example, a cylindrical rigid tube with numerous small through-holes. These small through-holes can block large particles of dirt, trapping them within the sedimentation space 21. A funnel structure 212 is formed at the bottom of the sludge collection tank 20 to facilitate the collection of large particles of dirt to the drain outlet 211. The bottom of the funnel structure 212 is connected to the drain outlet 211. Figure 3 Normally, the drain outlet 211 is sealed by the silicone plug 213. When it is necessary to clean the dirt at the bottom of the sludge bucket 20, the silicone plug 213 is opened to allow the water flow to carry the dirt out, thereby achieving the effect of cleaning the accumulated dirt.

[0042] See again Figure 3 A water-passing plate 40 is provided between the sludge collection bucket 20 and the filter box 10. The filter screen bucket 22 is fixed on the water-passing plate 40. A water-passing hole 41 is opened on the water-passing plate 40. The upper end through hole of the filter screen bucket 22 is connected to the water-passing hole 41. The water-passing hole 41 is connected to the filter chamber 13. The water inlet pipe 11 is connected to the sedimentation space 21 through the water-passing plate 40. The spiral guide plate 23 extends spirally from the upper end of the filter screen bucket 22 to the lower end of the filter screen bucket 22. Furthermore, the water-passing plate 40 is provided with a bent flow channel 42, and the water inlet pipe 11 is oriented toward the inlet of the bent flow channel 42 so that the bent flow channel 42 is connected to the water inlet pipe 11. The outlet of the bent flow channel 42 is located above the spiral flow channel 231 and is opened along the direction of the spiral flow channel 231. This allows the water flow from the water inlet pipe 11 to reach the inlet of the bent flow channel 42 directly. Then, the water flow from the outlet of the bent flow channel 42 flows directly down the spiral flow channel 231 and spirals around the filter screen barrel 22, reducing direct impact on the spiral guide plate 23.

[0043] In this embodiment, the upper end of the spiral guide plate 23 can be fixedly connected to the water-passing plate 41. Specifically, the top of the spiral guide plate 23 is provided with a locking block 234, and the water-passing plate 40 is provided with a locking hole 43. The locking block 234 and the locking hole 43 are locked together to fix the upper end of the spiral guide plate 23 to the water-passing plate 41, so that the spiral guide plate 23 can be more securely fitted onto the outer wall of the filter screen barrel 22.

[0044] refer to Figure 3 and Figure 4The filter also includes a mounting cover 50, which is fixedly connected to the filter box 10. A sludge collection bucket 20 is detachably connected to the mounting cover 50. The mounting cover 50 has an outlet 51 communicating with the filter chamber 13. A water-passing plate 40 is located at the bottom of the mounting cover 50, with a water-passing hole 41 fitted and fixed to the outlet 51. The upper end of the filter screen bucket 22 is fitted and fixed to the water-passing hole 41. The outlet end of the water inlet pipe 11 is fixed to the mounting cover 50 and communicates with the sedimentation space 21 through the bent flow channel 42 of the water-passing plate 40. The water-passing hole 41 is, for example, fitted with an interference fit onto the channel wall of the outlet 51 of the mounting cover 50. In a specific embodiment, the outlet 51 is formed at the axis of the mounting cover 50. The mounting cover 50 can isolate the sludge collection bucket 20 from the filter channel in the filter assembly 30 downstream of the filter, communicating only through the outlet 51, preventing unfiltered water from entering the filter channel in the filter assembly 30 downstream of the filter. Specifically, the mounting cover 50 is installed on the bottom side of the filter box 10 using screws or other fasteners. The bottom of the mounting cover 50 is threaded, and the threaded knob 52 is also threaded, allowing for a threaded connection between the two. The sludge collection bucket 20 is installed on the bottom of the mounting cover 50 via the threaded knob 52. Specifically, the threaded knob 52 axially presses against the mounting step 24 at the upper outer edge of the sludge collection bucket 20, thereby pressing it against the mounting cover 50 for a secure clamping.

[0045] In this embodiment, the outlet of the bent flow channel 42 is located outside the filter screen bucket 22, and the top of the filter screen bucket 22 is sleeved and fixed on the water passage hole 41 of the water passage plate 40 and communicates with the outlet 51. This allows impurities in the water flowing in from the inlet pipe 11 to be blocked and deposited at the bottom of the sludge collection bucket 20, while the water that has undergone coarse filtration through the filter screen bucket 22 flows out through the top of the filter screen bucket 22 to the filter assembly 30 at the rear of the filter, thus achieving the separation of water flow from large particles of dirt. Figure 2The filter assembly 30 includes a first filter element 31, a first pipe 32, a second filter element 33, a second pipe 34, a bottom pipe 35, and a water pump 36. The first filter element 31 is fitted onto the first pipe 32, and the second filter element 33 is fitted onto the second pipe 34. The first pipe 32 and the second pipe 34 are connected by the bottom channel 35. Water flowing from the top of the filter screen bucket 22 first passes through the outlet 51, then through the first filter element 31 into the first pipe 32, then through the bottom channel 35 to the second pipe 34, and then through the second filter element 33 into the water pump 36. The water pump 36 propels the water towards the outlet pipe 12 to return it to the fish tank. The first filter element 31 is a series of stacked annular filter cotton, fitted onto the first pipe 32. The sidewall of the first pipe 32 is connected to the first filter element 31. The second filter element 33 is also a series of stacked annular filter cotton or culture bricks, which are fitted with the second pipe 34. The side wall of the second pipe 34 is connected to the second filter element 33. The main purpose of the culture brick is as a filter material for aquariums. It can purify water quality and provide a good living environment for fish. The culture brick usually contains nitrifying bacteria, which can decompose harmful substances in the aquarium and maintain the cleanliness and stability of the water quality.

[0046] refer to Figure 5 and Figure 6 The inner edge of the spiral guide plate 23 abuts against the outer wall of the filter screen bucket 22, and the outer edge of the spiral guide plate 23 abuts against the inner wall of the sludge collection bucket 20. This prevents water from directly seeping downwards along the gaps between the spiral guide plate 23 and the outer wall of the filter screen bucket 22, and between the spiral guide plate 23 and the inner wall of the sludge collection bucket 20, and prevents water from flowing completely along the spiral guide plate 23. This avoids water seeping downwards from the gaps directly rushing to the bottom and causing the originally deposited dirt to be stirred up.

[0047] Under normal circumstances, the water flow entering the sludge collection tank 20 through the inlet pipe 11 has a certain impact force. If this force is too great, it may dislodge the spiral guide plate 23, causing it to separate from the water-passing plate 40 and shift towards the bottom. This can easily result in a portion of the top area of ​​the sludge collection tank 20 failing to form a spiral flow channel 231, potentially leading to turbulent water flow. To overcome this problem, in a further embodiment, a first flange 232 extends axially from the inner edge of the spiral guide plate 23. The spiral guide plate 23 is fitted onto the outer wall of the filter screen tank 22 through the first flange 232, increasing the contact area between the spiral guide plate 23 and the filter screen tank 22. Similarly, a second flange (not shown in the figure) can also extend axially from the outer edge of the spiral guide plate 23. The outer wall of the second flange abuts against the inner wall of the sludge collection tank 20, further increasing the contact area between the spiral guide plate 23 and the sludge collection tank 20. By increasing the contact area between the spiral guide plate 23 and the filter screen 22, and between the spiral guide plate 23 and the sludge collection bucket 20, the spiral guide plate 23 can be more firmly fixed between the outer wall of the filter screen 22 and the inner wall of the sludge collection bucket 20.

[0048] The spiral guide plate 23 is generally made of plastic or thin metal. It may not fit well against the outer wall of the filter bucket 22 or the inner wall of the sludge collection bucket 20, easily creating gaps. In a further embodiment, it also includes a first elastic strip (not shown) and a second elastic strip (not shown). The inner wall of the first flange 232 abuts against the outer wall of the filter bucket 22 via the first elastic strip, and the outer wall of the second flange abuts against the inner wall of the sludge collection bucket 20 via the second elastic strip. For example, the first and second elastic strips can be attached to the inner wall of the first flange 232 and the outer wall of the second flange, respectively. Furthermore, the first and second elastic strips can be made of rubber, for example. By providing the first and second elastic strips, water leakage can be further prevented.

[0049] In other embodiments, only one of the inner edge of the spiral guide plate 23 and the outer wall of the filter screen bucket 22, and the other of the outer edge of the spiral guide plate 23 and the inner wall of the sludge collection bucket 20, is in contact with each other. The other is not necessarily in contact. The flange and elastic strip may not be provided at the corresponding non-contacting edges.

[0050] The spiral structure of the spiral guide plate 23 gives it a certain degree of plasticity, allowing it to be pulled radially to increase the central aperture. At this time, the spiral guide plate 23 experiences an elastic restoring force in the radial inward direction. After being pulled radially open, the spiral guide plate 23 fits into the filter screen barrel 22, thus securing itself to the filter screen barrel 22 with the help of the elastic restoring force. Furthermore, the surface of the spiral guide plate 23 is smooth, and its entire structure can be made of a plastic material, such as stainless steel sheet or plastic sheet. This, combined with its spiral structure, allows for manual control of its axial expansion and contraction. When the user installs it onto the filter screen barrel 22, they can manually adjust the overall height of the spiral guide plate 22, thereby controlling the flow rate in the spiral channel 231.

[0051] refer to Figure 7 The spiral guide plate 23 is formed by a spirally arranged zigzag plate 233. The zigzag plate 233 is composed of multiple flat plates 2331 and multiple inclined plates 2332 connected in sequence, sinking down in a spiral shape. This structure can increase the resistance of the spiral flow channel 231 to the water flow, further reduce the flow velocity, and prevent the water flow to the bottom from being too rapid, thus preventing the bottom dirt from being stirred up.

[0052] In a preferred embodiment of this invention, a spiral guide plate 23 is fitted onto the outer wall of the filter screen bucket 22 to form a spiral flow channel 231 within the sedimentation space 21. The spiral flow channel 231 extends to the bottom of the sludge collection bucket 20, allowing the water flowing into the sludge collection bucket 20 from the inlet pipe 11 to flow spirally downwards along the spiral flow channel 231, resulting in a more orderly water flow. Furthermore, on the one hand, the water flow rubs against the wall of the spiral flow channel 231, losing kinetic energy; on the other hand, the inlet connected to the inlet pipe 11 and the outlet 51 communicating with the inner side of the filter screen bucket 22 are respectively located at the top of the sludge collection bucket 20, thus allowing the water to flow more smoothly from the inlet pipe 11 into the sludge collection bucket 20. Most of the water flowing into the spiral channel 231 from the inlet pipe 11 will immediately pass through the filter screen 22 and the outlet 51. As a result, the flow of fast-moving water from the inlet pipe 11 decreases as it goes down, and eventually the flow of water slows down as it goes down. In summary, with the inlet pipe 11 and the outlet 51 both located at the top of the sludge collection tank 20, and the spiral guide plate 23 forming the spiral channel 231 on the outside of the filter screen 22, the flow velocity in the spiral channel 231 slows down as it goes down. Therefore, large-diameter dirt can be deposited more gently here. Large-diameter dirt is not easily crushed during the flow process, and the dirt at the bottom is not easily stirred up by the water flow.

[0053] In summary, the filter proposed in this utility model integrates a sludge collection tank 20 at the water inlet. The sludge collection tank 20 performs coarse filtration of large particles of fish feces and other waste, which are deposited at the bottom of the tank. The coarsely filtered water then passes through a filter screen 22 into the subsequent filter assembly 30 for further filtration, and is subsequently circulated back into the fish tank. A water inlet pipe 11 is connected to the upper end of the sludge collection tank 20, allowing water to enter from the top. A spiral guide plate 23 is fitted onto the outer wall of the filter screen 22 inside the sludge collection tank 20 to form a spiral... Water enters the sludge collection bin 20 from the inlet pipe 11 via channel 231 and flows towards the bottom of the bin. The spiral channel 231 guides the water flow, making it more orderly and slowing its velocity. Large particles are thrown outwards by centrifugal force and eventually accumulate and settle at the bottom of the spiral channel 231, while some water flows radially inwards through the filter screen bin 22 and enters the filter media section of the filter assembly 30 for fine filtration. This prevents large particles from being crushed and entering the filter media, thus increasing the filter media's lifespan.

[0054] The background section of this utility model may include background information about the problems or circumstances surrounding the present utility model, 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.

[0055] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention 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 protection scope 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. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope defined by the appended claims.

Claims

1. A filter, characterized in that, The system includes a filter box, a sludge collection bin, and a filter assembly. The filter box is equipped with an inlet pipe and an outlet pipe, and a filter chamber is formed within the filter box. The filter assembly is disposed within the filter chamber. The sludge collection bucket is installed on the filter box, forming a sedimentation space within it. A filter screen bucket and a spiral guide plate are provided within the sedimentation space. The spiral guide plate is fitted onto the outer wall of the filter screen bucket to form a spiral flow channel within the sedimentation space. A drain outlet is provided at the bottom of the sedimentation space. The inner side of the filter screen bucket communicates with the filter chamber. The filter screen bucket is connected to the sedimentation space via a filter screen structure. The water inlet pipe communicates with the outer side of the filter screen bucket, and the water outlet pipe communicates with the filter chamber.

2. The filter according to claim 1, characterized in that, A water-passing plate is provided between the sludge collection bucket and the filter box. The filter screen bucket is fixed on the water-passing plate. Water-passing holes are provided on the water-passing plate. The upper end through hole of the filter screen bucket is connected to the water-passing holes. The water-passing holes are connected to the filter chamber. The water inlet pipe is connected to the sedimentation space through the water-passing plate. The spiral guide plate extends spirally from the upper end of the filter screen bucket to the lower end of the filter screen bucket.

3. The filter according to claim 2, characterized in that, The water-passing plate is provided with a bent flow channel, which is connected to the water inlet pipe. The outlet of the bent flow channel is located above the spiral flow channel and is opened along the direction of the spiral flow channel.

4. The filter according to claim 2, characterized in that, The upper end of the spiral guide plate is fixedly connected to the water-passing plate.

5. The filter according to claim 2, characterized in that, It also includes a mounting cover, which is fixedly connected to the filter box. The sludge collection bucket is detachably connected to the mounting cover. The mounting cover has a water outlet that communicates with the filter chamber. The water-passing plate is located at the bottom of the mounting cover. The water-passing hole is sleeved and fixed to the water outlet. The upper end of the filter screen bucket is sleeved and fixed to the water-passing hole. The water outlet end of the water inlet pipe is fixed to the mounting cover and communicates with the sedimentation space through the water-passing plate.

6. The filter according to claim 1, characterized in that, The inner edge of the spiral guide plate abuts against the outer wall of the filter screen bucket, and / or the outer edge of the spiral guide plate abuts against the inner wall of the sludge collection bucket.

7. The filter according to claim 6, characterized in that, A first flange extends axially from the inner edge of the spiral guide plate, and the spiral guide plate is fitted onto the outer wall of the filter screen barrel through the first flange; and / or, A second flange is provided at the outer edge of the spiral guide plate in the axial direction, and the outer wall of the second flange abuts against the inner wall of the sludge collection tank.

8. The filter according to claim 7, characterized in that, It also includes a first elastic strip, wherein the inner wall of the first flange abuts against the outer wall of the filter barrel via the first elastic strip; and / or, It also includes a second elastic strip, through which the outer wall of the second flange abuts against the inner wall of the sludge bucket.

9. The filter according to claim 1, characterized in that, The spiral guide plate is made of a malleable material so that the overall height of the spiral guide plate can be adjusted when it is fitted onto the outer wall of the filter barrel.

10. The filter according to claim 1, characterized in that, The spiral guide plate is formed by a spirally arranged zigzag plate, which is composed of multiple flat plates and multiple inclined plates connected in sequence.

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