Filtering equipment and cleaning equipment

Abstract

The utility model provides filtering equipment and cleaning equipment. The body is provided with a liquid collecting cavity, a filtering slag collecting cavity which is arranged at the bottom of the liquid collecting cavity and is communicated with the liquid collecting cavity, a water outlet and a slag discharging opening; wherein the filtering and slag collecting cavity is divided into a first filtering cavity and a slag collecting cavity which are communicated with each other; the first filtering cavity is respectively communicated with the liquid collecting cavity and the water outlet, and the slag collecting cavity is communicated with the slag outlet; the first filtering mechanism is arranged in the liquid collecting cavity and used for filtering fluid flowing into the liquid collecting cavity from the outside, and the filtered fluid is discharged from the water outlet; the second filtering mechanism is arranged in the first filtering cavity and is used for filtering the fluid in the first filtering cavity; the third filtering mechanism is arranged in the slag collecting cavity and is used for filtering the fluid in the slag collecting cavity and collecting slag; wherein the aperture of the filtering holes of the first filtering mechanism is larger than that of the filtering holes of the second filtering mechanism. In this way, the filtering effect can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering equipment, in particular to a filtering equipment and a cleaning equipment. BACKGROUND

[0002] The cleaning equipment such as the dishwasher filters the residues in the cleaned cleaning liquid by using the filter screen in the cleaning process. However, with the accumulation of residues on the filter screen, the liquid inlet amount of the pumping assembly gradually decreases, which affects the jet intensity and reduces the cleaning effect. Moreover, the residues are not removed in time, and the small particle residues will enter the filtered cleaning liquid under the scouring of the cleaning liquid, thereby being brought to the to-be-cleaned parts and causing secondary pollution. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a filtering equipment and a cleaning equipment to improve the filtering effect.

[0004] To solve the above technical problems, one technical scheme adopted by the present application is to provide a filtering equipment. The filtering equipment comprises: a body provided with a liquid collecting cavity, a filter residue collecting cavity arranged at the bottom of the liquid collecting cavity and communicated with the liquid collecting cavity, a water outlet and a residue outlet; wherein the filter residue collecting cavity is divided into a first filter cavity and a residue collecting cavity which are communicated; the first filter cavity is communicated with the liquid collecting cavity and the water outlet respectively, and the residue collecting cavity is communicated with the residue outlet; a first filtering mechanism is arranged in the liquid collecting cavity and used for filtering the fluid flowing into the liquid collecting cavity from outside, and the filtered fluid is discharged from the water outlet; a second filtering mechanism is arranged in the first filter cavity and used for filtering the fluid in the first filter cavity; and a third filtering mechanism is arranged in the residue collecting cavity and used for filtering and collecting residues in the residue collecting cavity; wherein the pore diameter of the filter holes of the first filtering mechanism is larger than the pore diameter of the filter holes of the second filtering mechanism.

[0005] The third filtering mechanism divides the residue collecting cavity into a first cavity and a second cavity, the first cavity is communicated with the first filter cavity and the residue outlet, and the second cavity is communicated with the water outlet.

[0006] The second filtering mechanism divides the first filter cavity into a third cavity and a fourth cavity, the third cavity is communicated with the liquid collecting cavity, and the fourth cavity is communicated with the water outlet; the filtering equipment further comprises a flow channel mechanism provided with a flow channel, the flow channel is provided with a first outlet communicated with the fourth cavity, a second outlet communicated with the second cavity and the water outlet.

[0007] The second filtering mechanism comprises: a first cylindrical filtering piece arranged in the first filter cavity and rotatably connected with the body, the first cylindrical filtering piece performs centrifugal filtration on the fluid in the first filter cavity by centrifugal force when rotating relative to the body, so as to collect the residues in the first filter cavity on the outside of the first cylindrical filtering piece; and the inside space of the first cylindrical filtering piece is communicated with the water outlet.

[0008] The side wall of the first cylindrical filter element is externally provided with a first blade at one end, and the distance between the first blade and the other end surface of the side wall gradually increases in the rotation direction of the first cylindrical filter element.

[0009] The filter device further comprises a first driving assembly arranged on the body and connected with the first cylindrical filter element to drive the first cylindrical filter element to rotate.

[0010] The third filter mechanism comprises a second cylindrical filter element arranged in the slag collecting cavity and rotatably connected with the body, and when the second cylindrical filter element rotates relative to the body, the fluid in the slag collecting cavity is centrifugally filtered by centrifugal force to make the residues in the slag collecting cavity collected on the outside of the second cylindrical filter element; and the inside space of the second cylindrical filter element and the drainage port are communicated.

[0011] The side wall of the second cylindrical filter element is externally provided with a second blade at one end, and the distance between the second blade and the other end surface of the side wall gradually increases in the rotation direction of the second cylindrical filter element.

[0012] The filter device further comprises a second driving assembly arranged on the body and connected with the second cylindrical filter element to drive the second cylindrical filter element to rotate.

[0013] The filter device further comprises a valve body arranged at the communication position between the slag collecting cavity and the slag discharge port to control the on-off between the slag collecting cavity and the slag discharge port.

[0014] The filter slag collecting cavity further comprises a second filter cavity communicated with the first filter cavity and the liquid collecting cavity, and the first filter mechanism comprises: a planar filter screen arranged on the opening of the liquid collecting cavity, the planar filter screen being provided with a first opening; a filter cup provided with a second opening, the second opening being communicated with the first opening to guide the residues collected by the planar filter screen to the filter cup through the first opening and the second opening; and the inside space of the filter cup is communicated with the slag discharge port.

[0015] The end of the filter cup away from the planar filter screen extends into the second filter cavity to filter the fluid in the filter cup into the second filter cavity.

[0016] The side wall of the filter cup is provided with a first filter part communicated with the second filter cavity, and the bottom of the filter cup is provided with a second filter part communicated with the slag discharge port; the pore size of the filter holes of the first filter part is smaller than the pore size of the filter holes of the second filter part; and the pore size of the filter holes of the planar filter screen is smaller than the pore size of the filter holes of the second filter part.

[0017] The second filtering mechanism comprises a first cylindrical filtering member, the third filtering member comprises a second cylindrical filtering member, the axial direction of the filter cup, the axial direction of the first cylindrical filtering member and the axial direction of the second cylindrical filtering member are arranged in parallel, and the filter cup, the first cylindrical filtering member and the second cylindrical filtering member are arranged in a triangular shape in a vertical plane of the axial direction, the filter cup and the second cylindrical filtering member are arranged close to the residue discharge port, and the first cylindrical filtering member is arranged close to the water discharge port.

[0018] The body is further provided with a backflush flow channel, the second filtering mechanism divides the first filtering cavity into a third cavity and a fourth cavity, the third cavity is communicated with the liquid collecting cavity, the fourth cavity is communicated with the water discharge port, the outlet of the backflush flow channel is communicated with the fourth cavity, and the backflush flow channel is used for providing backflush fluid to the fourth cavity.

[0019] The filtering device further comprises a pumping assembly arranged in the body and communicated with the water discharge port, and at least provides pumping pressure for the fluid.

[0020] The filtering device further comprises a water distribution valve arranged in the body, the water distribution valve is respectively communicated with the pumping assembly, and is used for guiding the fluid pumped back by the pumping assembly to the upper side of the liquid collecting cavity, so as to clean the to-be-cleaned object located on the upper side of the liquid collecting cavity.

[0021] To solve the above technical problems, another technical scheme of the present application is to provide a cleaning device. The cleaning device comprises: a device body forming a cleaning cavity; and the above filtering device mounted on the device body and used for filtering the to-be-filtered liquid generated by the cleaning cavity.

[0022] The filtering device provided by the present application comprises a body, a first filtering mechanism, a second filtering mechanism and a third filtering mechanism, the body is provided with a liquid collecting cavity, a filtering residue collecting cavity arranged at the bottom of the liquid collecting cavity and communicated with the liquid collecting cavity, a water discharge port and a residue discharge port, the filtering residue collecting cavity is divided into a first filtering cavity and a residue collecting cavity communicated with each other, the first filtering cavity is communicated with the liquid collecting cavity and the water discharge port, and the residue collecting cavity is communicated with the residue discharge port; the first filtering mechanism is arranged in the liquid collecting cavity and used for filtering the fluid flowing into the liquid collecting cavity from outside; the second filtering mechanism is arranged in the first filtering cavity and used for filtering the fluid in the first filtering cavity; and the third filtering mechanism is arranged in the residue collecting cavity and used for filtering and collecting residue in the residue collecting cavity. In this way, the filtering device can filter the fluid in sequence through the first filtering mechanism and the second filtering mechanism, so as to improve the filtering effect; the first filtering cavity is communicated with the water discharge port, the residue collecting cavity is communicated with the first filtering cavity and the residue discharge port, so that the residue mixture discharged from the first filtering cavity can be collected in the residue collecting cavity, the residue can be efficiently collected, and the accumulation of residue in the first filtering cavity is reduced; and the third filtering mechanism can be used to filter the residue mixture collected in the residue collecting cavity, so that the residue mixture can be separated again, thereby further improving the filtering effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative effort, wherein:

[0024] Figure 1 is a structural schematic diagram of an embodiment of the filtering device of the present application;

[0025] Figure 2 is Figure 1 is a sectional view schematic diagram of the filtering device of the embodiment;

[0026] Figure 3 is Figure 1 is another sectional view schematic diagram of the filtering device of the embodiment;

[0027] Figure 4 is Figure 1 is a first sectional view schematic diagram of part of the structure;

[0028] Figure 5 is Figure 1 is a second sectional view schematic diagram of part of the structure;

[0029] Figure 6 is Figure 1 is a disassembled structural schematic diagram of part of the structure;

[0030] Figure 7 is Figure 1 is another disassembled structural schematic diagram of part of the structure;

[0031] Figure 8 is Figure 1 is a bottom view schematic diagram of part of the structure;

[0032] Figure 9 is Figure 1 is a third sectional view schematic diagram of part of the structure;

[0033] Figure 10 is Figure 1 is a fourth sectional view schematic diagram of part of the structure;

[0034] Figure 11 is Figure 1 is a fifth sectional view schematic diagram of part of the structure;

[0035] Figure 12 is Figure 1 is a sixth sectional view schematic diagram of part of the structure;

[0036] Figure 13 is Figure 12 is a side view schematic diagram of the embodiment;

[0037] Figure 14 is a structural schematic diagram of an embodiment of the flow channel mechanism in the filter device of the present application;

[0038] Figure 15 is Figure 16 is a bottom view schematic diagram of the embodiment;

[0039] Figure 15 is Figure 1 is a sectional structural schematic diagram of the embodiment along a-a;

[0040] Figure 4 is a structural schematic diagram of another embodiment of the flow channel mechanism in the filter device of the present application;

[0041] Figure 4 is Figure 2 is a bottom view schematic diagram of the embodiment;

[0042] Figure 4 is Figure 4 is a sectional structural schematic diagram of the embodiment along b-b;

[0043] Figure 4 is a structural schematic diagram of the valve body in the filter device of the present application;

[0044] Figure 4 is Figure 6 is a bottom view schematic diagram of the embodiment;

[0045] Figure 4 is Figure 7 is a sectional structural schematic diagram of the embodiment along c-c;

[0046] Figure 4 is Figure 7 is a disassembled structural schematic diagram of the embodiment. DETAILED DESCRIPTION

[0047] The embodiments of the technical solutions of the present application will be described in detail below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two and more than two, unless otherwise explicitly and specifically limited.

[0050] Reference herein to "embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0052] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0053] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] Cleaning equipment such as dishwashers uses a filter screen to filter the residues in the cleaned cleaning liquid during the cleaning process. However, as the residues accumulate on the filter screen, the liquid intake of the pumping assembly gradually decreases, affecting the jet intensity, thereby reducing the cleaning effect; and the residues are not removed in time, and small particle residues will enter the filtered cleaning liquid under the scouring of the cleaning liquid, thereby being brought to the to-be-cleaned parts, causing secondary pollution.

[0055] In the related art, the frequency of cleaning the filter screen by the user is reduced by increasing the area of the filter screen, or the filter screen is cleaned by a scraper on the side where the filter screen gathers residues. However, increasing the area of the filter screen increases the cost of the filter screen, and the cleaning by the scraper squeezes the filter screen, affecting the performance and service life of the filter screen, increasing secondary pollution, and affecting the cleaning effect.

[0056] Therefore, the present application provides a filtering device, which filters fluid in sequence through a first filtering mechanism and a second filtering mechanism, can improve the filtering effect, and the first filtering cavity is communicated with a water outlet, and the residue collecting cavity is communicated with the first filtering cavity and a residue outlet, so that the residue mixture discharged from the first filtering cavity is collected in the residue collecting cavity, efficient residue collection is realized, the accumulation of residues in the first filtering cavity is reduced, the use of a scraper and other components can be avoided, damage to the filtering mechanism can be avoided, and the third filtering mechanism can be used to filter the residue mixture collected in the residue collecting cavity, the residue mixture can be separated again, and the filtering effect can be further improved.

[0057] The present application first provides a filtering device, as shown in Figure 5 , which is a structural schematic diagram of an embodiment of the filtering device of the present application. Figure 1 , which is a structural schematic diagram of an embodiment of the filtering device of the present application. Figure 4 , which is a sectional view of the filtering device of the embodiment. Figure 13 , which is a sectional view of the filtering device of the embodiment. Figure 9 , which is a sectional view of the filtering device of the embodiment. Figure 10 , which is a sectional view of the filtering device of the embodiment. Figure 1 , which is a sectional view of the filtering device of the embodiment. Figure 1 , which is a sectional view of the filtering device of the embodiment. Figure 9 , which is a sectional view of the filtering device of the embodiment. Figure 14 , which is a sectional view of the filtering device of the embodiment.

[0058] Figure 1 , which is a sectional view of the filtering device of the embodiment. Figure 5 , which is a sectional view of the filtering device of the embodiment. Figure 5 , which is a sectional view of the filtering device of the embodiment. Figure 5 , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​ , which is a sectional view of the filtering device of the embodiment. ​is a structural schematic diagram of a valve body in the filtering device of the present application; ​ is ​ a disassembled structural schematic diagram of the embodiment.

[0059] As shown in ​ , 2 , 3, 4, 9, the filtering device of the present embodiment comprises a body 10, a first filtering mechanism 20, a second filtering mechanism 30 and a third filtering mechanism 40, the body 10 is provided with a liquid collecting cavity 11, a filtering slag collecting cavity 12 arranged at the bottom of the liquid collecting cavity 11 and communicating with the liquid collecting cavity 11, a water outlet A and a slag outlet B; wherein the filtering slag collecting cavity 12 is divided into a first filtering cavity 121 and a slag collecting cavity 122 which communicate with each other; the first filtering cavity 121 respectively communicates with the liquid collecting cavity 11 and the water outlet A, and the slag collecting cavity 122 communicates with the slag outlet A; the first filtering mechanism 20 is arranged in the liquid collecting cavity 11 and used for filtering the fluid flowing into the liquid collecting cavity 11 from outside; the second filtering mechanism 30 is arranged in the first filtering cavity 121 and used for filtering the fluid in the first filtering cavity 121; the third filtering mechanism 40 is arranged in the slag collecting cavity 122 and used for filtering and collecting slag of the fluid in the slag collecting cavity 122; wherein the pore size of the filtering holes of the first filtering mechanism 20 is larger than the pore size of the filtering holes of the second filtering mechanism 30.

[0060] Wherein, the water outlet A is used for discharging the fluid filtered by the second filtering mechanism 30 from the first filtering cavity 121; the slag outlet B is used for discharging the residual slag filtered and collected by the third filtering mechanism 40 from the slag collecting cavity 122; the fluid flowing into from outside can be a mixture of flowing medium and residual slag, the filtered fluid can only contain flowing medium, and the flowing medium can include liquid or gas-liquid mixture, etc. The substance collected by the slag collecting cavity 122 can only include residual slag; or the substance collected by the slag collecting cavity 122 can also include a mixture of residual slag and flowing medium, which can improve the flowability of the residual slag, thereby improving the slag discharging efficiency of the filtering device.

[0061] Wherein, the filtering slag collecting cavity 122 is arranged at the bottom of the liquid collecting cavity 11, so that the fluid in the liquid collecting cavity 11 can flow to the filtering slag collecting cavity 122 under the action of gravity, thereby reducing the pumping power and saving energy consumption.

[0062] In an application scenario, when the fluid flowing into the liquid collecting cavity 11 from outside is subjected to primary filtering by the first filtering mechanism 20, the fluid after primary filtering flows into the first filtering cavity 121, and the residual slag after primary filtering is retained on the first filtering mechanism 20; the fluid after primary filtering is subjected to secondary filtering by the second filtering mechanism 30 arranged in the first filtering cavity 121, the fluid (not containing residual slag) after secondary filtering is discharged from the water outlet A, and the residual slag or residual slag mixture after secondary filtering is collected to the slag collecting cavity 122, and the third filtering mechanism 40 in the slag collecting cavity 122 performs slag-water separation again, and the residual slag is discharged from the slag outlet B.

[0063] The filtering device of the embodiment can filter the fluid in sequence through the first filtering mechanism 20 and the second filtering mechanism 30, and can improve the filtering effect. The first filtering cavity 121 is communicated with the water outlet A, and the slag collecting cavity 122 is communicated with the first filtering cavity 121 and the slag outlet B, so that the residue mixture discharged from the first filtering cavity 121 can be collected to the slag collecting cavity 122, efficient slag collection is realized, and the accumulation of residue in the first filtering cavity 121 is reduced. The residue mixture collected to the slag collecting cavity 122 can be filtered by the third filtering mechanism 40, the residue mixture can be separated again, and the filtering effect is further improved.

[0064] In some embodiments, as shown in ​ , 5 , 9, 11, the third filtering mechanism 40 divides the slag collecting cavity 122 into a first cavity 1221 and a second cavity 1222. The first cavity 1221 is communicated with the first filtering cavity 121 and the slag outlet B, and the second cavity 1222 is communicated with the water outlet A. In this way, the fluid filtered three times is collected in the second cavity 1222 and discharged through the water outlet A, and the residue filtered three times and collected is collected in the first cavity 1221 and discharged through the slag outlet B, so that the slag and water are effectively separated.

[0065] In some embodiments, as shown in ​ , 5 , 9, the second filtering mechanism 30 divides the first filtering cavity 121 into a third cavity 14 and a fourth cavity 15. The third cavity 14 is communicated with the liquid collecting cavity 11, and the fourth cavity 15 is communicated with the water outlet A. In this way, the fluid filtered by the first filtering mechanism 20 is collected in the fourth cavity 15 and discharged through the water outlet A, and the residue mixture or residue filtered by the first filtering mechanism 20 is collected in the third cavity 14 and enters the slag collecting cavity 122, so that the slag and water are effectively separated.

[0066] In some embodiments, as shown in ​ , 3 , 4, 5, 9, 17, 18, 19, the filtering device further comprises a flow channel mechanism 70. The flow channel mechanism 70 is provided with a flow channel. The flow channel is provided with a first outlet C1 communicated with the fourth cavity 15, a second outlet C2 communicated with the second cavity 1222, and a water outlet A. In this embodiment, the fourth cavity 15 of the second filtering mechanism 30 and the second cavity 1222 of the third filtering mechanism 40 are communicated with the water outlet A through the flow channel mechanism 70, so that the fluid discharge efficiency of the water outlet A is improved, and the filtering efficiency of the filtering device is improved.

[0067] In some embodiments, the side wall of the first outlet C1 extends toward the second filter mechanism 30 into the fourth cavity 15, and the outer wall of the flow channel mechanism 70 is sealed with the cavity wall of the fourth cavity 15; the side wall of the second outlet C2 extends toward the third filter mechanism 40 into the second cavity 1222, and the outer wall of the flow channel mechanism 70 is sealed with the cavity wall of the second cavity 1222.

[0068] In some embodiments, the flow channel mechanism 70 is located on the side of the second filter mechanism 30 and the third filter mechanism 40 away from the liquid collecting chamber 11, so as to expand the opening area of ​​the liquid collecting chamber 11, that is, the water collecting area.

[0069] In some embodiments, the first outlet C1 is arranged closer to the drain outlet A relative to the second outlet C2. Because the second filter mechanism 30 is the main filter mechanism of the filter device, its fluid discharge volume will be greater than the fluid discharge volume of the third filter mechanism 40. Therefore, through this structure, the filtering efficiency of the filter device can be improved.

[0070] In some embodiments, as ​ 、 5 As shown in Figure 6, the second filtering mechanism 30 includes: a first cylindrical filter element 31, which is arranged in the first filter cavity 121 and is rotatably connected to the main body 10. When the first cylindrical filter element 31 rotates relative to the main body 10, the fluid in the first filter cavity 121 is centrifugally filtered by centrifugal force, so that the residue in the first filter cavity 121 is collected on the outside of the first cylindrical filter element 31; the inner space of the first cylindrical filter element 31 is connected to the drain outlet A.

[0071] The first cylindrical filter element 31 has an end wall 311 and an annular filter screen 312 connected to the end wall 311 . The end wall 311 and the annular filter screen 312 enclose a columnar filter cavity with one end open. The columnar filter cavity is connected to the drain port A.

[0072] The first cylindrical filter 31 is arranged in the first filtering cavity 121, and the outer side of the annular filter screen 312 of the first cylindrical filter 31 is arranged in a spaced manner with the inner side wall of the first filtering cavity 111, which not only facilitates the rotation of the first cylindrical filter 31 relative to the body 10, but also facilitates the collection of residues outside the first cylindrical filter 31, and the filtered fluid is collected to the inner side space of the first cylindrical filter 31, i.e., the cylindrical filtering cavity and the fourth cavity 15; and the residues will move away from the first cylindrical filter 31 under the action of the centrifugal force of the first cylindrical filter 31, reducing the adhesion on the first cylindrical filter 31, and the filtering and residue removal effects can be improved. The first cylindrical filter 31 can not only realize the filtration of the fluid, but also realize the cleaning of the residues. Compared with the existing way of reducing residue accumulation by enlarging the filter screen area or by scraping, the residues are collected by the centrifugal force in the embodiment, and the residues will separate from the first cylindrical filter 31 under the action of the centrifugal force, thereby reducing the accumulation of residues on the first cylindrical filter 31, which is not only low in cost, but also does not scratch and extrude the first cylindrical filter 31.

[0073] Further, the first cylindrical filter 31 realizes the second filtering mechanism 30, which can be arranged around the outer periphery of the fourth cavity 15, so that the filtering area of the second filtering mechanism 30 can be increased in the limited space, thereby improving the filtering effect and efficiency.

[0074] In some embodiments, the end wall 311 of the first cylindrical filter 31 can serve as a cover thereof, which is arranged on the opening formed by the annular side wall, and the mounting hole for mounting the cover and communicating with the first filtering cavity 121 can be arranged on the bottom wall of the liquid collecting cavity 11, and the end wall 311 of the first cylindrical filter 31 is arranged in a separated manner with the first filtering cavity 121, the liquid collecting cavity 11 and the inner side space of the first cylindrical filter 31 (such as the fourth cavity 15); the cover mounted on the bottom wall of the liquid collecting cavity 11 can also increase the structural stability between the first cylindrical filter 31 and the body 10, thereby improving the reliability of the filtering device.

[0075] In other embodiments, the second filtering mechanism can also be other structures, and the third cavity and the fourth cavity can also have other arrangement modes.

[0076] In other embodiments, the second filtering mechanism can only include the annular filter screen, and the mounting portion on which the annular filter screen can relatively rotate and seal can be formed on the bottom wall of the liquid collecting cavity.

[0077] In some embodiments, a first blade is provided on one end of the side wall of the first cylindrical filter element 31, and the distance between the first blade and the other end face of the side wall gradually increases along the rotation direction x of the first cylindrical filter element 31. In this way, the first blade can propel the fluid located on the outside of the first cylindrical filter element 31 toward the other end of the side wall when the first cylindrical filter element 31 rotates along the rotation direction x, thereby enabling the fluid located on the outside of the first cylindrical filter element 31 to flush the outer surface of the first cylindrical filter element 31, thereby accelerating the separation of residue from the outer surface of the first cylindrical filter element 31, reducing residue adhesion, and improving the filtering and residue removal effects. The first blade is provided at one end of the side wall of the first cylindrical filter element 31, enabling the entire outer surface of the first cylindrical filter element 31 to be flushed by the fluid.

[0078] The first blade may be disposed outside one end of the annular filter screen 312 to disturb the fluid to flush the entire outer surface of the annular filter screen 312 .

[0079] The end of the first cylindrical filter element 31 facing away from the end wall 311 forms an opening communicating with the drain port A.

[0080] In some embodiments, a plurality of first blades disposed on the sidewall of the first cylindrical filter element 31 are spaced and evenly arranged around the rotation direction x, so that the fluid can flush the first cylindrical filter element 31 more evenly, thereby better improving the filtering and troubleshooting effects.

[0081] In some embodiments, a plurality of groups of first blades spaced apart along the axial direction of the first cylindrical filter element may be disposed outside the side wall of the first cylindrical filter element.

[0082] In some embodiments, as ​ 、 5 As shown in Figures 6 and 7, the filtration apparatus further includes a first drive assembly 50, which is disposed on the body 10 and connected to the first cylindrical filter element 31 to drive the first cylindrical filter element 31 to rotate. In this embodiment, the first drive assembly 50 enables automatic rotation of the first cylindrical filter element 31, thereby improving the efficiency of centrifugal filtration. In this embodiment, the first drive assembly 50 actively drives the first cylindrical filter element 31.

[0083] Among them, ​ 、 6As shown in Figures 8 and 9, the first drive assembly 50 may include a motor 51, a first gear 52, and a second gear 53. The first gear 52 is coaxially connected to the output shaft of the motor 51, and the second gear 53 is meshed with the first gear 52. The second filter mechanism 30 also includes a first rotating shaft 33, which is coaxially fixed to the second gear 53 and the first cylindrical filter element 31. The motor 51 drives the first gear 52 to rotate, which in turn drives the second gear 53 to rotate. The second gear 53 drives the first cylindrical filter element 31 to rotate via the first rotating shaft 33.

[0084] In other embodiments, a drive element such as an electric cylinder or a pneumatic cylinder may be used in place of the motor. In other embodiments, other transmission mechanisms may be used in place of the gears, or the motor may be used to directly drive the first cylindrical filter element. In other embodiments, other structures may be used to drive the first cylindrical filter element to rotate.

[0085] In some embodiments, ​ 、 6 As shown, the filtering device further includes a bearing 314, a bearing 317, an oil seal 318, a sealing ring 319, and a sealing ring 320. The end wall 311 is provided with a mounting hole, and the flow channel mechanism 70 is provided with another mounting hole. The ends of the first rotating shaft 33 are respectively mounted in these mounting holes, and the ends of the first rotating shaft 33 can be rotatably mounted on the inner walls of the two mounting holes via the bearings 314 and 317. The oil seal 318 is disposed between the first rotating shaft 33 and the inner wall of the mounting hole in the flow channel mechanism 70. The bottom wall of the first filter cavity 121 is provided with a mounting hole, and the side wall of the first outlet C1 of the flow channel mechanism 70 extends from the mounting hole in the bottom wall into the first filter cavity 121. The sealing ring 320 is disposed between the outer wall of the first outlet C1 and the inner wall of the mounting hole in the first filter cavity 121. The sealing ring 319 is disposed between the end wall 311 and the annular filter screen 312. In this embodiment, gaskets, retaining rings, and other structures may also be provided to enhance the stability of the relative motion between the rotating and fixed components.

[0086] In some embodiments, the mounting hole on the flow channel mechanism 70 is connected to the first outlet C1 , and the first rotating shaft 33 passes through the mounting hole on the flow channel mechanism 70 and the first outlet C1 to the mounting hole on the end wall 311 in sequence.

[0087] In some embodiments, as ​ 、 7 As shown, the flow channel mechanism 70 includes an upper shell 71 and a lower shell 72. The upper shell 71 forms a flow channel and a mounting cavity that are spaced apart. The lower shell cover is arranged at the opening of the mounting cavity. The mounting cavity is used to install the first gear 52, the second gear 53 and the third gear 63 described below.

[0088] In some embodiments, the passive driving of the fluid through the first cylindrical filter element is achieved by some flow channel design and blades.

[0089] In some embodiments, as shown in Figs. 6 and 7, the third filtering mechanism 40 comprises a second cylindrical filter element 41 arranged in the slag collecting cavity 122 and rotatably connected with the body 10. When the second cylindrical filter element 41 rotates relative to the body 10, the fluid in the slag collecting cavity 122 is centrifugally filtered by the centrifugal force to make the slag in the slag collecting cavity 122 collect outside the second cylindrical filter element 41. The inner space of the second cylindrical filter element 41 and the drainage port A are connected. ​ 、 5

[0090] In some embodiments, the second cylindrical filter element 41 has an end wall 411 and an annular filter screen 412 connected with the end wall 411. The end wall 411 and the annular filter screen 412 form a cylindrical filtering cavity with one end opening. The cylindrical filtering cavity is connected with the drainage port A.

[0091] In some embodiments, the second cylindrical filter element 41 is arranged in the slag collecting cavity 122, and the outer side of the annular filter screen 412 of the second cylindrical filter element 41 is spaced apart from the inner side wall of the slag collecting cavity 122. This not only facilitates the rotation of the second cylindrical filter element 41 relative to the body 10, but also facilitates the collection of the slag outside the second cylindrical filter element 41. The filtered fluid collects in the inner space of the second cylindrical filter element 41, i.e. the cylindrical filtering cavity and the second cavity 1222. The slag is driven away from the second cylindrical filter element 41 by the centrifugal force, reducing the adhesion of the slag on the second cylindrical filter element 41, and improving the filtering and slag removal effects. The second cylindrical filter element 41 can not only filter the fluid, but also clean the slag. Compared with the existing methods of reducing slag accumulation by expanding the filter screen area or by scraping, the present embodiment collects the slag by centrifugal force. The slag is separated from the second cylindrical filter element 41 under the action of the centrifugal force, thereby reducing the accumulation of the slag on the second cylindrical filter element 41. This not only has low cost, but also does not scratch or squeeze the second cylindrical filter element 41.

[0092] Further, the third filtering mechanism 40 is achieved by the second cylindrical filter element 41 in the present embodiment. The first cavity 1221 can be arranged around the outer periphery of the second cavity 1222, thereby increasing the filtering area of the third filtering mechanism 40 in a limited space, and improving the filtering effect and efficiency.

[0093] ​In some embodiments, the end wall 411 of the second cylindrical filter element 41 can serve as its cover body, which is arranged on the opening formed by the annular filter mesh 412. A mounting hole for installing the cover body and connected to the slag collecting chamber 122 can be provided on the bottom wall of the liquid collecting chamber 11. The end wall 411 of the second cylindrical filter element 41 isolates the slag collecting chamber 122, the liquid collecting chamber 11 and the inner space of the second cylindrical filter element 41 (such as the second cavity 1222) respectively; the cover body is installed on the bottom wall of the liquid collecting chamber 11, and can also increase the structural stability between the second cylindrical filter element 41 and the main body 10, thereby improving the reliability of the filtering equipment.

[0094] In other embodiments, the third filtering mechanism may also be other structures, and the first cavity and the second cavity may also be arranged in other ways.

[0095] In other embodiments, the third filtering mechanism may only include an annular filter screen, and a relatively rotatable and sealed mounting portion of the annular filter screen may be formed on the bottom wall of the liquid collecting chamber.

[0096] In some embodiments, as ​ As shown, a second blade 42 is provided on the outside of one end of the side wall of the second cylindrical filter element 41. Along the rotation direction y of the second cylindrical filter element 41, the distance between the second blade 42 and the other end face of the side wall gradually increases. In this way, when the second cylindrical filter element 41 rotates along the rotation direction y, the second blade 42 can push the fluid located on the outside of the second cylindrical filter element 41 toward the other end of the side wall, thereby enabling the fluid located on the outside of the second cylindrical filter element 41 to flush the outer surface of the second cylindrical filter element 41, thereby accelerating the separation of residue from the outer surface of the second cylindrical filter element 41, reducing residue adhesion, and improving the filtering and residue removal effects. The second blade 42 is provided at one end of the side wall of the second cylindrical filter element 41, so that the entire outer surface of the second cylindrical filter element 41 can be flushed by the fluid.

[0097] The second blade 42 may be disposed outside one end of the annular filter screen 412 to disturb the fluid to flush the entire outer surface of the annular filter screen 412 .

[0098] The end of the second cylindrical filter element 41 facing away from the end wall 411 forms an opening communicating with the drain port A.

[0099] In some embodiments, a plurality of second blades 42 disposed on the side wall of the second cylindrical filter element 41 are spaced and evenly arranged around the rotation direction y so that the fluid can flush the second cylindrical filter element 41 more evenly, thereby better improving the filtering and troubleshooting effects.

[0100] In some embodiments, a plurality of groups of second blades may be disposed outside the sidewall of the second cylindrical filter element and spaced apart along the axial direction of the second cylindrical filter element.

[0101] In some embodiments, as shown in ​ , 7 , 8, the filtering device further comprises a second driving assembly 60 arranged on the body 10 and connected with the second cylindrical filter 41 to drive the second cylindrical filter 41 to rotate. In this embodiment, the second driving assembly 60 is used to realize the automatic rotation of the second cylindrical filter 41, so that the efficiency of centrifugal filtration can be improved. In this embodiment, the second driving assembly 60 is used to realize the active driving of the second cylindrical filter 41.

[0102] In this embodiment, the second driving assembly 60 can comprise a third gear 63, and the second gear 53 is arranged with the third gear 63. The third filtering mechanism 40 further comprises a second rotating shaft 43 coaxially arranged with and fixed to the third gear 63 and the second cylindrical filter 41. The motor 51 drives the first gear 52 to rotate, the first gear 52 drives the second gear 53 to rotate, the second gear 53 drives the third gear 63 to rotate, and the third gear 63 drives the second cylindrical filter 41 to rotate through the second rotating shaft 43.

[0103] In other embodiments, other transmission mechanisms can be used instead of the above-mentioned gears, or a driving assembly independent of the first driving assembly can be used to drive the second cylindrical filter. In other embodiments, other structures can be used to drive the second cylindrical filter to rotate.

[0104] In some embodiments, as shown in ​ , the filtering device further comprises bearings 417, 416, an oil seal 416, a sealing ring 414 and a sealing ring 413. The end wall 411 is provided with a mounting hole, and the flow channel mechanism 70 is provided with another mounting hole. The two ends of the second rotating shaft 43 are respectively arranged in the two mounting holes, and the two ends of the second rotating shaft 43 can be rotatably arranged with the inner walls of the two mounting holes through the bearings 417, 416. The oil seal 416 is arranged between the second rotating shaft 43 and the inner wall of the mounting hole of the flow channel mechanism 70. The bottom wall of the slag collecting cavity 122 is provided with a mounting hole, and the side wall of the second outlet C2 of the flow channel mechanism 70 extends from the mounting hole on the bottom wall into the first filtering cavity 121. The sealing ring 414 is arranged between the outer side wall of the second outlet C2 and the inner wall of the mounting hole on the slag collecting cavity 122. The sealing ring 413 is arranged between the end wall 411 and the annular filter screen 412. In this embodiment, washers, retaining rings and other structures can be arranged to increase the stability of the relative movement between the rotating part and the fixed part.

[0105] In some embodiments, the mounting hole on the flow channel mechanism 70 is in communication with the second outlet C2, and the second rotating shaft 43 passes through the mounting hole on the flow channel mechanism 70 and the second outlet C2 to the mounting hole on the end wall 411 in sequence.

[0106] In some embodiments, the passive driving of the second cylindrical filter element by the fluid is achieved by some flow channel design and blades.

[0107] In some embodiments, as shown in ​ , the rotation direction x of the first cylindrical filter element 31 can be the same as or opposite to the rotation direction y of the second cylindrical filter element 32.

[0108] In some embodiments, the first cylindrical filter element 31 serves as the main filtering mechanism of the filtering device, and the radius of the first cylindrical filter element 31 is greater than that of the second cylindrical filter element 32, so as to increase the filtering area of the first cylindrical filter element 31 and thus improve the filtering efficiency of the filtering device.

[0109] In some embodiments, the residue concentration in the slag collection cavity 122 is higher than that in the first filtering cavity 121, and the residue is more likely to adhere to the surface of the second cylindrical filter element 41, so the rotation speed of the second cylindrical filter element 41 can be increased to reduce the adhesion of the residue.

[0110] In some embodiments, the rotation speed of the second cylindrical filter element 41 can be equal to or slightly greater than that of the first cylindrical filter element 31. For example, the ratio between the rotation speed of the second cylindrical filter element 41 and that of the first cylindrical filter element 31 is 1:1 to 1:2.2, for example, the ratio can be 1:1, 1:1.3, 1:1.5, 1:1.8, 1:2.0, 1:2.2, etc.

[0111] In some embodiments, as shown in ​ , 2 , 3, 4, 5, 13, the filtering slag collection cavity 12 further comprises a second filtering cavity 123 in communication with the first filtering cavity 121 and the liquid collection cavity 11, and the first filtering mechanism 20 comprises: a flat filter screen 21, which is arranged on the opening of the liquid collection cavity 11 and is provided with a first opening; a filter cup 22, which is provided with a second opening in communication with the first opening, so that at least the residue collected by the flat filter screen 21 is guided through the first opening and the second opening into the filter cup 22; and the internal space of the filter cup 22 is in communication with the residue discharge port B.

[0112] Among them, the flat filter screen 21 is arranged on the opening of the liquid collection cavity 11 to filter the fluid flowing into the liquid collection cavity 11, and the filtered fluid flows into the liquid collection cavity 11, the filtered residue enters the filter cup 22 from the side of the flat filter screen 21 away from the liquid collection cavity 11, and is discharged to the residue discharge port B through the filter cup 22, realizing automatic residue discharge. Of course, in other embodiments, the internal space of the filter cup can not be in communication with the residue discharge port B, and the residue in the filter cup can be manually removed.

[0113] The plane filter screen 21 is in the form of a plate body, which can expand the filtering area to cover the opening of the liquid collecting cavity 11, thereby facilitating the increase of the water collecting area of the liquid collecting cavity 11. The plane filter screen 21 can be in the form of a plane, or the height of the plane filter screen 21 near the first opening area is smaller than the height of other areas, so that the plane filter screen 21 itself has the function of guiding the residues thereon to the first opening and the second opening, thereby improving the residue discharging efficiency of the filtering device.

[0114] The cross section of the filter cup 22 is in the form of a circle, a square or other shapes, and the side wall of the filter cup 22 is spaced apart from the side wall of the second filtering cavity 123, which facilitates the flow of the fluid in the liquid collecting cavity 11 to the second filtering cavity 123, and then to the first filtering cavity 121, thereby increasing the flow speed of the fluid and accelerating the filtering efficiency of the filtering device.

[0115] In some embodiments, the filter cup 22 is further provided with an operation part protruding from the side of the plane filter screen 21 away from the liquid collecting cavity 11, which facilitates the lifting of the filter cup 22 through the operation part, and improves the efficiency of the dismounting of the filter cup 22 and the cleaning of the residues therein. The operation part is provided with a plurality of openings to reduce the blockage of the residues on the plane filter screen 21 by the operation part, thereby facilitating the residues on the plane filter screen 21 to enter the filter cup 22.

[0116] In some embodiments, the end of the filter cup 22 away from the plane filter screen 21 extends into the second filtering cavity 123, which is used for filtering the fluid in the filter cup 22 into the second filtering cavity 123.

[0117] The external fluid continuously flows from the side of the plane filter screen 21 away from the liquid collecting cavity 11 to the plane filter screen 21, and therefore, in addition to the residues left after the filtration, the flowing medium also exists in the side of the plane filter screen 21 away from the liquid collecting cavity 11. The residues are collected into the filter cup 22 along with the flowing medium, the filter cup 22 further filters the residue mixture, the filtered fluid enters the second filtering cavity 123, and the filtered residues are discharged through the residue discharge port B. In this way, not only is the residue mixture collected into the filter cup 22 facilitated, but also the residue-water separation effect is further improved, thereby improving the filtering effect and the filtering efficiency.

[0118] In some embodiments, the side wall of the filter cup 22 is provided with a first filtering part in communication with the second filtering cavity 123, and the bottom of the filter cup 22 is provided with a second filtering part in communication with the residue discharge port B. The pore diameter of the filtering holes of the first filtering part is smaller than the pore diameter of the filtering holes of the second filtering part, and the pore diameter of the filtering holes of the plane filter screen 21 is smaller than the pore diameter of the filtering holes of the second filtering part.

[0119] The residue mixture within the filter cup 22 is filtered through the first and second filter sections. The fluid filtered by the first filter section flows into the second filter chamber 123, and the fluid and / or small particles of residue filtered by the second filter section are discharged to the residue discharge port B. The pore size of the filter holes in the first filter section is smaller than that of the filter holes in the second filter section, which can improve the cleanliness of the fluid filtered into the second filter chamber 123. Large particles of residue remain in the filter cup 22 and can be manually removed. In this embodiment, only small particles of residue are discharged through the residue discharge port B, which can reduce the risk of clogging of the residue discharge port B and improve the residue discharge efficiency of the residue discharge port B.

[0120] In other embodiments, the second filter portion may not be provided at the bottom of the filter cup, but the bottom of the filter cup may be directly connected to the slag discharge port, and both small and large particle residues are discharged through the slag discharge port.

[0121] In some embodiments, as ​ As shown, the axial direction of the filter cup 22, the axial direction of the first cylindrical filter element 31, and the axial direction of the second cylindrical filter element 41 are parallel, and the filter cup 22, the first cylindrical filter element 31, and the second cylindrical filter element 41 are arranged in a triangular shape in a vertical plane to the axial direction. The filter cup 22 and the second cylindrical filter element 41 are located near the slag discharge port B, and the first cylindrical filter element 31 is located near the drain port A. The parallel arrangement of the axial directions of the filter cup 22, the axial directions of the first cylindrical filter element 31, and the axial directions of the second cylindrical filter element 41 can improve the smoothness of fluid flow, thereby improving filtration efficiency and filtration effect. The triangular arrangement of the filter cup 22, the first cylindrical filter element 31, and the second cylindrical filter element 41 in a vertical plane to the axial direction can optimize the layout of the filtration equipment, simplify its filter chamber structure, and improve its integration. The placement of the filter cup 22 and the second cylindrical filter element 41 near the slag discharge port B can improve the discharge efficiency of residues. The placement of the first cylindrical filter element 31 near the drain port A can improve the discharge efficiency of the filtered fluid.

[0122] In some embodiments, the filter cup 22 , the first cylindrical filter element 31 , and the second cylindrical filter element 41 are located below the liquid collecting chamber 11 , which can optimize the structure of the body 10 and facilitate the flow of fluid.

[0123] In other embodiments, the main body may be provided with two drainage ports, which are respectively connected to the second cavity and the fourth cavity.

[0124] In some embodiments, as ​As shown, the connecting wall between the first filter cavity 121 and the second filter cavity 123 is provided with an exhaust port B1. Since the first filter cavity 121 is in communication with the liquid collecting cavity 11, and the liquid collecting cavity 11 is in communication with the external environment, the gas in the first filter cavity 121 and the slag collecting cavity 122 can be discharged to the second filter cavity 123 through the exhaust port B1, and then to the external environment. The fluid usually contains some gas. The embodiment can discharge the gas through the exhaust port B1, reduce the influence of the gas on the filtration, and improve the filtration effect.

[0125] In some embodiments, as shown in ​ 、 10 , 20, 21, 22, 23, the filtration device further comprises a valve body 80 arranged at the communication position between the slag collecting cavity 122 and the slag discharge port B to control the on-off between the slag collecting cavity 122 and the slag discharge port B.

[0126] The embodiment controls the on-off between the slag collecting cavity 122 and the slag discharge port B through the valve body 80, can realize the asynchronous slag collecting and discharging, improve the effect of slag collecting and discharging, and realize the asynchronous or synchronous slag discharging of the filter cup 22 and the slag collecting cavity 122.

[0127] In some embodiments, the valve body 80 comprises a cover plate 82, a rubber cover 83, a bracket 84 and a sealing ring 85. The bracket 84 is provided with the sealing ring 85 to seal the gap between the bracket 84 and the body 10. The bracket 84 is further provided with a mounting blind hole and a first through hole. The rubber cover 83 is provided with a mounting column and a second through hole. The mounting column is arranged in the mounting blind hole, the second through hole is in communication with the first through hole, and the cover plate 82 is reversibly arranged relative to the second through hole. The opening and closing of the valve body 80 can be realized by controlling the turning of the cover plate 82.

[0128] In some embodiments, the valve body 80 is a one-way valve body to avoid the backflow of the residual slag in the slag discharge port B to the slag collecting cavity 122.

[0129] In some embodiments, as shown in ​ 、 12 , the body 10 is further provided with a slag discharge channel 81 in communication with the slag discharge port B. The slag discharge channel 81 is also in communication with the internal space of the filter cup 22, and is in communication with the slag collecting cavity 112 through the valve body 80 or directly. The height of the slag discharge channel 81 is lower than the internal space of the filter cup 22 and the slag collecting cavity 112, so that the residual slag can be collected in the slag discharge channel 81 under the action of gravity, for example, the slag discharge channel 81 is arranged at the bottom. In other embodiments, the slag discharge channel can also be arranged below the slag collecting cavity.

[0130] In some embodiments, the slag discharge port B and the slag discharge channel 81 are arranged away from the collecting chamber 11 and the second filtering chamber 123, and the distance between the bottom wall of the slag collecting chamber 122 and the collecting chamber 11 gradually decreases towards the slag discharge channel 81, so that when the slag discharge port B and the slag discharge channel 81 are below the collecting chamber 11, the bottom wall of the slag collecting chamber 122 is inclined downward to the slag discharge channel 81, thereby improving the slag discharge efficiency of the slag collecting chamber 122.

[0131] In some embodiments, as shown in ​ , the body 10 is further provided with a water inlet B2, which is in communication with the slag discharge channel 81 and is used to introduce flushing liquid into the slag discharge channel 81 to facilitate cleaning of the slag discharge channel 81 and the slag discharge port B. The connection between the water inlet B2 and the slag discharge channel 81 can be controlled by a valve body.

[0132] In some embodiments, as shown in ​ , 2 , 3, 4, and 5, the filtering device comprises a pumping assembly 110 arranged at the slag discharge port B and used to discharge the residue in the slag collecting chamber 122 from the slag discharge port B.

[0133] The present embodiment discharges the residue through the slag discharge port B in communication with the slag collecting chamber 122 to improve the accumulation and pollution of the residue in the slag collecting chamber 122; and the present embodiment actively and automatically discharges the residue in the slag collecting chamber 122 through the pumping assembly 110, thereby improving the residue discharge efficiency.

[0134] In another embodiment, the active automatic residue discharge can be achieved by other mechanisms; or the bottom wall of the slag collecting chamber can be arranged as an inclined surface, and the height of the slag discharge port is lower than that of the first outlet, so that the residue can be passively and automatically discharged under the action of gravity; or the residue can be manually discharged.

[0135] In some embodiments, as shown in ​ , 17 , 18, and 19, the body 10 is further provided with a backflush channel 132, the second filtering mechanism 30 divides the first filtering chamber 121 into a third chamber 14 and a fourth chamber 15, the third chamber 14 is in communication with the collecting chamber 11, the fourth chamber 15 is in communication with the water outlet A, the outlet of the backflush channel 132 is in communication with the fourth chamber 15, and the backflush channel 132 is used to provide backflush fluid to the fourth chamber 15.

[0136] The backflush channel 132 is provided with a backflush inlet B3 in communication with the fourth chamber 15.

[0137] The flushing fluid can include gas, liquid, or gas-liquid mixture, etc.

[0138] The backflushing of the second filtering mechanism 30 by the flushing fluid and the filtering of the fluid by the second filtering mechanism 30 can be synchronous or asynchronous.

[0139] The present embodiment can also control the transmission of the flushing fluid to the backflushing inlet B3 by the on-off valve.

[0140] The filtered fluid without residue is collected in the fourth cavity 15, and the fluid with residue is collected in the third cavity 14. The residue is gathered on the side of the second filtering mechanism 30 close to the third cavity 14. The flushing fluid input from the backflushing inlet B3 flows at least partially from the fourth cavity 15 to the third cavity 14 through the second filtering mechanism 30 to flush the second filtering mechanism 30 toward the third cavity 14, so that the residue gathered on the side of the second filtering mechanism 30 close to the third cavity 14 falls off the second filtering mechanism 30 and flows out of the third cavity 14 to the residue collecting cavity 122. In this way, the risk of secondary pollution caused by the residue remaining in the second filtering mechanism 30 and the third cavity 14 can be reduced, the filtering effect can be improved, the layout of the backflushing residue discharge structure of the filtering device can be optimized, the structure of the filtering device can be simplified, and the reliability of the filtering device can be improved.

[0141] In some embodiments, the backflushing flow channel 132 includes a spraying member arranged in the fourth cavity 15. The spraying member is in communication with the backflushing inlet B3 and is used to guide the flushing fluid input from the backflushing inlet B3 to the second filtering mechanism 30.

[0142] The spraying flow channel of the spraying member is in communication with the backflushing inlet B3.

[0143] The present embodiment guides the flushing fluid input from the backflushing inlet B3 to the fourth cavity 15 by the spraying member, which can shorten the flow path between the flushing fluid outlet and the second filtering mechanism 30, reduce the hydraulic pressure loss of the flushing fluid in the fourth cavity 15, increase the flushing pressure of the flushing fluid on the second filtering mechanism 30, and further improve the flushing effect of the flushing fluid on the second filtering mechanism 30.

[0144] In some embodiments, the backflushing flow channel 132 can be arranged integrally with the flow channel mechanism 70.

[0145] In some embodiments, the backflushing flow channel 132 can be arranged integrally with the flow channel mechanism 70. The backflushing flow channel 132 is arranged at least partially around the first outlet C1 and extends toward the fourth cavity 15 together with the first outlet C1. The flow channel is arranged separately from the backflushing flow channel 132 and extends toward the arrangement direction of the second filtering mechanism 30 and the third filtering mechanism 40. For example, the backflushing flow channel 132 extends along the horizontal direction and then extends upward. In other embodiments, the above-mentioned flow channel structure can be adjusted based on the specific design of the above-mentioned filtering mechanism and pumping assembly.

[0146] In some embodiments, the second filtering mechanism 30 includes a first cylindrical filter element 31, and the spray element includes at least one spray arm extending axially along the first cylindrical filter element 31, and the spray arm is provided with a plurality of spray ports arranged at intervals along the axial direction and facing the first cylindrical filter element 31, so that the spray element can divert the flushing fluid to different depth positions in the first cylindrical filter element 31, thereby improving the flushing uniformity of different depth positions of the first cylindrical filter element 31 and improving the cleaning effect; and can enable the spray element 131 to extend along the inner side wall of the cylindrical filter element, which can reduce the influence of the spray element on the flow channel space in the fourth cavity 15, and reduce the spray path length between the spray port and the first cylindrical filter element 31, thereby improving the spray flushing effect of the first cylindrical filter element 31.

[0147] In some embodiments, the spray element includes a plurality of spray arms spaced apart along the circumference of the first cylindrical filter element 31 . The plurality of spray arms extend axially along the first cylindrical filter element 31 and are symmetrically arranged about the central axis of the first cylindrical filter element 31 .

[0148] This embodiment utilizes multiple spray arms spaced circumferentially around the first cylindrical filter element 31 to spray and flush the first cylindrical filter element 31, improving the uniformity of flushing along the circumference of the first cylindrical filter element 31. Furthermore, the multiple spray arms extend axially along the first cylindrical filter element 31, further improving the uniformity of flushing along the axial direction of the first cylindrical filter element 31. Furthermore, the multiple spray arms are symmetrically arranged about the central axis of the first cylindrical filter element 31, further improving the uniformity of flushing along the circumference of the first cylindrical filter element 31. Therefore, this embodiment improves the efficiency of removing residue remaining on the first cylindrical filter element 31, thereby enhancing filtration efficiency and effectiveness.

[0149] The number of the multiple spray arms can be 2, 3, etc., and is not specifically limited.

[0150] In other embodiments, the number of the spray arm may be one.

[0151] In some embodiments, the spray element is fixedly connected to the body 10 and is rotatable relative to the first cylindrical filter element 31 , which can improve the spraying effect of the spray element on the first cylindrical filter element 31 .

[0152] In some embodiments, as ​ 、 15 As shown in Figures 16, there is no need to set a recoil flow channel on the flow channel mechanism 70. The recoil flow channel can be realized by other components independent of the flow channel mechanism 70. The flow channel mechanism 70 can be detachably installed with the recoil flow channel, or installed through the main body and other components.

[0153] In some embodiments, as ​、 2 , 3, 4, 5, the filtering device further comprises a pumping assembly 90 arranged in the body 10 and in communication with the drain port A, and at least provides pumping pressure for the fluid.

[0154] The pumping assembly 90 provides pumping pressure for the liquid in the second cavity 1222 and the fourth cavity 15 through the drain port A, and can form a pressure difference between the inner and outer sides of the third filtering mechanism 40 and the second filtering mechanism 30, specifically, the pressure of the first cavity 1221 is greater than that of the second cavity 1222, and the pressure of the third cavity 14 is greater than that of the fourth cavity 15, which can accelerate the flow of the fluid and thus improve the filtering efficiency.

[0155] In some embodiments, the spraying part of the present embodiment partially blocks the second filtering mechanism 30.

[0156] The spraying part blocks the side wall of the first cylindrical filter 31, so that the liquid to be filtered quickly flows from the third cavity 14 into the fourth cavity 15, improving the cleaning efficiency.

[0157] In some embodiments, the pumping assembly 90 is provided with an inlet and an outlet, the inlet is in communication with the drain port A, and the outlet can be in communication with the backflush inlet B3. In this way, the filtered fluid can be recycled as backflush fluid to backflush the second filtering mechanism 30, thereby saving energy.

[0158] In some embodiments, as shown in ​ , the filtering device further comprises a water distribution valve 100 arranged in the body 10, and the water distribution valve 100 is in communication with the pumping assembly 90, and is used to guide the fluid pumped back by the pumping assembly 90 from the drain port A to the spraying port 170 above the liquid collecting cavity 11, so as to clean the objects located above the liquid collecting cavity 11. In this way, the filtered fluid can be recycled to save energy consumption.

[0159] In some embodiments, as shown in ​ , the filtering device further comprises a pipeline 400 in communication with the first outlet and the water distribution valve 100 respectively, so as to realize the connection between the pumping assembly 90 and the water distribution valve 100.

[0160] In some embodiments, as shown in ​ , the filtering device further comprises a pipeline 300 in communication with the pipeline 400 and the backflush inlet B3, and the pipeline 300 has high flexibility in arrangement, so that the pipeline 400 and the backflush inlet B3 are connected through the pipeline 300, which can improve the flexibility of the layout between the pumping assembly 90, the water distribution valve 100 and the flow channel mechanism 70, and improve the applicability of the filtering device.

[0161] In some embodiments, the pipeline 400, the pipeline 300, and the water distribution valve 100 constitute a flow distribution mechanism for guiding the filtered fluid output from the pump assembly 90 at the drain A to the backflush inlet B3 and above the liquid collection chamber 11, so as to clean the to-be-cleaned object above the liquid collection chamber 11 with a small amount of filtered fluid as flushing fluid and a large amount of filtered fluid as cleaning fluid, and to filter the to-be-filtered liquid after cleaning the to-be-cleaned object to the liquid collection chamber 11 through the first filtering mechanism 20.

[0162] The embodiment realizes the recycling of the filtered liquid through the pump assembly 90 and the flow distribution mechanism, thereby saving the cleaning liquid and reducing the cost. The water filtered through multiple stages is pressurized by the pump assembly 90, most of the water enters the spray opening 170 through the water distribution valve 100, and a small amount of water enters the backflush flow channel 132 through the backflush inlet B3 arranged on the pump outlet flow channel, is then distributed to multiple spray members, is sprayed through the spray opening to the first cylindrical filter 31, is cleaned in the reverse direction from the inside to the outside, and separates the contaminants attached to the outer surface of the first cylindrical filter 31 from the first cylindrical filter 31, so that the first cylindrical filter 31 has better water permeability. The first cylindrical filter 31 rotates under the drive of the motor, so that the filter screen as a whole can be cleaned. The inlet of the residue collection chamber 122 is arranged on one side of the first filtering chamber 121, and the second outlet C2 is arranged on the flow channel of the flow channel mechanism 70. When the pump assembly 90 works, the water is sucked into the pump cavity from the flow channel, a low-pressure area is formed at the inlet of the pump assembly 90, the outside of the first cylindrical filter 31 of the first filtering chamber 121 is a relatively high-pressure area, and the inlet position of the residue collection chamber 122 is a relatively high-pressure area. Therefore, part of the water enters the flow channel to the pump assembly 90 through the residue collection chamber 122. The contaminants on the outside of the first cylindrical filter 31 are pushed to the inlet of the residue collection chamber 122 by the water flow, enter the residue collection chamber 122 through the inlet of the residue collection chamber 122, and are collected in the residue collection chamber 122. Because the water flow in the residue collection chamber 122 is slow, and the second cylindrical filter 41 is arranged in the residue collection chamber 122, the contaminants are collected in the residue collection chamber 122, the residue collection function is realized, the contaminants are separated from the circulating water, and therefore, the water for cleaning the to-be-cleaned object is always clean water, thereby avoiding the secondary pollution of the tableware.

[0163] The second filtering mechanism 30 and the third filtering mechanism 40, i.e., the cyclone residue collection mechanism, of the embodiment can effectively separate the residue from the circulating water, realize clean water cleaning, and avoid secondary pollution. The backflush flow channel 132 of the embodiment can automatically clean the second filtering mechanism 30 through backflush jet flow, and does not need to be maintained by a person. The embodiment can ensure the stability of the water output of the pump assembly 90, improve the pump working efficiency, and make it easier to discharge the collected residue.

[0164] The filtering member of the application can be realized by a filter screen, or can be realized by a microporous filter paper type, a non-woven fabric, or a wire-wound type filtering member.

[0165] In some embodiments, during the cleaning process, after the water flushes the surface of the tableware, the water carries the residues to the bottom of the cleaning cavity, and flows through the flat filter screen 21 to the liquid collecting cavity 11; the residues smaller than the aperture of the flat filter screen 21 (the aperture of the flat filter screen is 0.5-2 mm) enter the second filtering cavity 123, and the residues larger than the aperture of the flat filter screen 21 enter the filter cup 22. The filter cup 22 has two apertures, the aperture size of the side of the filter cup 22 is smaller, which can be set to 0.5-3 mm. The aperture size of the bottom of the filter cup 22 is larger, which can be set to 5-10 mm. The residues larger than the aperture of the bottom of the filter cup 22 need to be cleaned manually, and the residues smaller than the aperture of the bottom of the filter cup 22 and larger than the aperture of the side are discharged through the residue discharge port B. The residues smaller than the aperture of the side of the filter cup 22 enter the second filtering cavity 123. The first-stage filtration realizes the filtration of residues larger than 3 mm. The aperture of the first cylindrical filter member 31 and the aperture of the second cylindrical filter member can be the same, which can be set to 0.4-0.1 mm, preferably 0.25-0.35 mm. The water in the second filtering cavity 123 first enters the first filtering cavity 121; the water and residues entering the first filtering cavity 121 are filtered through the first cylindrical filter member 31, the tiny particles smaller than the aperture of the first cylindrical filter member 31 can penetrate the first cylindrical filter member 31 and enter the pumping assembly 90 with the water, and the residues larger than the aperture of the first cylindrical filter member 31 (the size is 0.1-3 mm) enter the residue collecting cavity 122. When discharging the residues, the residues in the residue collecting cavity 122 are discharged through the residue discharge port B.

[0166] The above filtering mechanism can be detachably connected with the body 10.

[0167] In some embodiments, the filtering device of the present embodiment further comprises a temperature sensor arranged in the flow dividing mechanism, which is used to detect the temperature of the cleaning liquid, so as to monitor the temperature of the cleaning liquid and improve the cleaning effect.

[0168] Optionally, the filtering device can further comprise a heating device, which is used to heat the cleaning liquid based on the temperature of the cleaning liquid, so as to improve the cleaning effect.

[0169] The filtering device of the present application can filter the fluid through the first filtering mechanism, the second filtering mechanism in sequence, which can improve the filtering effect; the first filtering cavity is communicated with the water discharge port, and the residue collecting cavity is communicated with the first filtering cavity and the residue discharge port, which can collect the residue mixture discharged from the first filtering cavity to the residue collecting cavity, realize efficient residue collection, and reduce the accumulation of residues in the first filtering cavity; and the third filtering mechanism can be used to filter the residue mixture collected in the residue collecting cavity, which can separate the residue mixture again, so as to further improve the filtering effect.

[0170] The application applies backflushing jet cleaning filter screen (at least including a first cylindrical filter element), which can improve the filtering efficiency under limited filter screen area; the backflushing jet cleaning filter screen has no extrusion force on the filter screen, which can reduce the secondary pollution problem caused by residue penetrating the filter screen; the backflushing jet makes the residue gather outside the filter screen and not adhere to the filter screen, facilitating residue discharge; the residue collecting cavity can collect the residue, separate the residue from the circulating cleaning water, and keep the circulating water clean; the residue collecting cavity is provided with a rotating filter screen (at least including a second cylindrical filter element), the end of the filter screen is provided with a blade, which can mix the residue and water in the residue collecting cavity, facilitate residue discharge, and when rotating, can push water to flush the surface of the side filter screen, so as to separate the residue from the filter screen; the residue collecting cavity and the residue discharge port are communicated through a one-way valve, the one-way valve is closed during cleaning work, and the residue collecting cavity realizes the residue collecting function; during residue discharge, the one-way valve is opened, and the residue is discharged from the residue collecting cavity; the filter screen is of an easy-to-disassemble structure, and can be taken out from the body, facilitating later maintenance.

[0171] The application further provides a cleaning device, which comprises a device body and a filtering device, the device body is formed with a cleaning cavity, and the filtering device is installed on the device body and used for filtering a to-be-filtered liquid generated by the cleaning cavity.

[0172] At least the residue collecting mechanism is arranged in the cleaning cavity.

[0173] The working and structure of the filtering device can refer to the above-mentioned embodiments.

[0174] Optionally, the cleaning cavity comprises a dish washing cavity, that is, the cleaning device can comprise a dish washing machine.

[0175] In other embodiments, the cleaning device can further comprise a washing machine, an automatic beverage machine or other devices requiring residue-water separation.

[0176] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A filter device, characterized in that The filtering device comprises: The body is provided with a liquid collecting cavity, a filtering slag collecting cavity arranged at the bottom of the liquid collecting cavity and communicated with the liquid collecting cavity, a water outlet and a slag outlet; wherein the filtering slag collecting cavity is divided into a first filtering cavity and a slag collecting cavity in communication; the first filtering cavity is communicated with the liquid collecting cavity and the water outlet respectively, and the slag collecting cavity is communicated with the slag outlet; A first filtering mechanism is arranged in the liquid collecting cavity and used for filtering the fluid flowing into the liquid collecting cavity from outside, and the filtered fluid is discharged from the water outlet; A second filtering mechanism is arranged in the first filtering cavity and used for filtering the fluid in the first filtering cavity; A third filtering mechanism is arranged in the slag collecting cavity and used for filtering and collecting slag of the fluid in the slag collecting cavity; The pore size of the filtering holes of the first filtering mechanism is larger than the pore size of the filtering holes of the second filtering mechanism.

2. The filter apparatus of claim 1, wherein, The third filtering mechanism divides the slag collecting cavity into a first cavity and a second cavity; the first cavity is communicated with the first filtering cavity and the slag outlet; and the second cavity is communicated with the water outlet.

3. The filter apparatus of claim 2, wherein, The second filtering mechanism divides the first filtering cavity into a third cavity and a fourth cavity; the third cavity is communicated with the liquid collecting cavity; and the fourth cavity is communicated with the water outlet; The filtering device further comprises a flow channel mechanism provided with a flow channel; the flow channel is provided with a first outlet communicated with the fourth cavity, a second outlet communicated with the second cavity, and the water outlet.

4. The filter apparatus of claim 1, wherein, The second filtering mechanism comprises: A first cylindrical filtering piece is arranged in the first filtering cavity and rotatably connected with the body; when the first cylindrical filtering piece rotates relative to the body, the fluid in the first filtering cavity is centrifugally filtered by centrifugal force to make the residue in the first filtering cavity collected on the outside of the first cylindrical filtering piece; the inside space of the first cylindrical filtering piece is communicated with the water outlet.

5. The filter apparatus of claim 4, wherein, One end of the side wall of the first cylindrical filtering piece is externally provided with a first blade; along the rotation direction of the first cylindrical filtering piece, the distance between the first blade and the end face of the other end of the side wall gradually increases.

6. The filter apparatus of claim 4, wherein, The filtering device further comprises a first driving assembly arranged in the body and connected with the first cylindrical filtering piece to drive the first cylindrical filtering piece to rotate.

7. The filter apparatus of claim 1, wherein, The third filtering mechanism comprises: A second cylindrical filtering piece is arranged in the slag collecting cavity and rotatably connected with the body; when the second cylindrical filtering piece rotates relative to the body, the fluid in the slag collecting cavity is centrifugally filtered by centrifugal force to make the residue in the slag collecting cavity collected on the outside of the second cylindrical filtering piece; the inside space of the second cylindrical filtering piece is communicated with the water outlet.

8. The filter apparatus of claim 7, wherein, One end of the side wall of the second cylindrical filtering piece is externally provided with a second blade; along the rotation direction of the second cylindrical filtering piece, the distance between the second blade and the end face of the other end of the side wall gradually increases.

9. The filter apparatus of claim 7, wherein, The filtering device further comprises a second driving assembly arranged in the body and connected with the second cylindrical filtering piece to drive the second cylindrical filtering piece to rotate.

10. The filter apparatus of claim 7, wherein, The filter device further comprises a valve body arranged at the communication between the slag collecting cavity and the slag discharge port to control the on-off between the slag collecting cavity and the slag discharge port.

11. The filter apparatus of claim 1, wherein, The filter slag collecting cavity further comprises a second filter cavity in communication with the first filter cavity and the liquid collecting cavity, and the first filter mechanism comprises: a flat filter screen arranged at the opening of the liquid collecting cavity, the flat filter screen being provided with a first opening; a filter cup provided with a second opening in communication with the first opening to guide the residue collected by the flat filter screen through the first opening and the second opening into the filter cup; and the inner space of the filter cup being in communication with the slag discharge port.

12. The filter apparatus of claim 11, wherein, The end of the filter cup away from the flat filter screen extends into the second filter cavity to filter the fluid in the filter cup into the second filter cavity.

13. The filter apparatus of claim 12, wherein, The sidewall of the filter cup is provided with a first filter part in communication with the second filter cavity, and the bottom of the filter cup is provided with a second filter part in communication with the slag discharge port. The pore size of the filter holes of the first filter part is smaller than the pore size of the filter holes of the second filter part, and the pore size of the filter holes of the flat filter screen is smaller than the pore size of the filter holes of the second filter part.

14. The filter apparatus of claim 11, wherein, The second filter mechanism comprises a first cylindrical filter part, the third filter mechanism comprises a second cylindrical filter part, the axial direction of the filter cup, the axial direction of the first cylindrical filter part and the axial direction of the second cylindrical filter part are arranged in parallel, and the filter cup, the first cylindrical filter part and the second cylindrical filter part are arranged in a triangular shape in the vertical plane of the axial direction, the filter cup and the second cylindrical filter part are arranged close to the slag discharge port, and the first cylindrical filter part is arranged close to the water discharge port.

15. The filter apparatus of claim 1, wherein, The body is further provided with a backflush flow channel, the second filter mechanism divides the first filter cavity into a third cavity and a fourth cavity, the third cavity is in communication with the liquid collecting cavity, the fourth cavity is in communication with the water discharge port, the outlet of the backflush flow channel is in communication with the fourth cavity, and the backflush flow channel is used to provide backflush fluid to the fourth cavity.

16. The filter apparatus of claim 1, wherein, The filter device further comprises a pumping assembly arranged in the body and in communication with the water discharge port to provide pumping pressure for the fluid.

17. The filter apparatus of claim 16, wherein, The filter device further comprises a water distribution valve arranged in the body, the water distribution valve is in communication with the pumping assembly, and is used to guide the fluid pumped back from the water discharge port by the pumping assembly to above the liquid collecting cavity to clean the objects to be cleaned located above the liquid collecting cavity.

18. A cleaning apparatus characterized by, The filter device comprises: a device body formed with a cleaning cavity; the filter device according to any one of claims 1 to 17 is installed on the device body to filter the to-be-filtered liquid generated by the cleaning cavity. The filter device comprises: a device body formed with a cleaning cavity; the filter device according to any one of claims 1 to 17 is installed on the device body to filter the to-be-filtered liquid generated by the cleaning cavity.

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