Filtering apparatus and cleaning apparatus

Abstract

The application provides a filtering device and a cleaning device. The filtering device comprises a back-flushing filtering mechanism, which is provided with a filtering cavity, a first filtering piece is arranged in the filtering cavity, the first filtering piece divides the filtering cavity into a first chamber and a second chamber, the first chamber is located outside the second chamber, the filtering cavity is provided with a first inlet and a first outlet which are communicated with the first chamber, and the filtering cavity is provided with a second inlet and a second outlet which are communicated with the second chamber; wherein the first inlet is used for inputting a liquid to be filtered, the second inlet is used for inputting a flushing fluid, the second outlet is used for outputting at least part of the filtered liquid, and the first outlet is used for outputting at least residue in the liquid to be filtered. In this way, the filtering effect and reliability can be improved.

Description

Technical Field

[0001] This application relates to the field of filtration equipment technology, and in particular to a filtration device and a cleaning device. Background Technology

[0002] Dishwashers and other cleaning equipment use filters to remove residue from the cleaning solution during the cleaning process. However, as residue accumulates on the filter, the amount of liquid entering the pump gradually decreases, affecting the jet intensity and thus reducing the cleaning effect. Furthermore, if the residue is not removed in time, small particles can enter the filtered cleaning solution under the scouring action of the cleaning fluid and be carried onto the parts to be cleaned, causing secondary contamination.

[0003] In related technologies, increasing the filter screen area reduces the frequency of filter cleaning by users; or cleaning is done with a scraper on the side of the filter screen where residue accumulates. However, increasing the filter screen area increases the cost of the filter screen; and scraper cleaning compresses the filter screen, affecting its performance and lifespan, increasing secondary pollution, and affecting the cleaning effect. Utility Model Content

[0004] This application provides a filtration device and a cleaning device to improve filtration efficiency and reliability.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution: providing a filtration device. The filtration device includes a backwash filtration mechanism with a filtration chamber. A first filter element is disposed within the filtration chamber, dividing the filtration chamber into a first chamber and a second chamber. The first chamber is located outside the second chamber. The filtration chamber has a first inlet and a first outlet communicating with the first chamber, and a second inlet and a second outlet communicating with the second chamber. The first inlet is used to input the liquid to be filtered, the second inlet is used to input the flushing fluid, the second outlet is used to output at least a portion of the filtered liquid, and the first outlet is used to output at least the residue in the liquid to be filtered. This method improves the filtration effect and reliability.

[0006] The filtration equipment also includes a diversion mechanism connected to the second inlet. The diversion mechanism is used to divert part of the cleaning liquid into rinsing fluid and divert another part of the cleaning liquid to the object to be cleaned, so as to clean the object to be cleaned. The filtrate after cleaning the object to be cleaned is collected to the first inlet.

[0007] The backwash filtration mechanism further includes a spray element disposed in the second chamber. The spray channel of the spray element is connected to the second inlet and is used to guide the flushing fluid input from the second inlet to the first filter element.

[0008] The first filter element includes a cylindrical filter element with a bottom wall connected to the inner wall of the filter chamber; the second chamber is located inside the cylindrical filter element, and the first chamber is located outside the cylindrical filter element.

[0009] The spraying component includes at least one spraying arm extending axially along the cylindrical filter element, and the spraying arm has a plurality of spray nozzles spaced axially and facing the cylindrical filter element.

[0010] The first exit is located far away from the second exit relative to the first entrance.

[0011] The backwash filtration mechanism includes: a first housing forming a receiving cavity with an opening at one end, and the first housing having a first inlet, a second inlet, a first outlet and a second outlet; and an end cap covering the opening to form a filtration cavity within the receiving cavity.

[0012] The second outlet is located on the end wall of the first housing opposite to the end cover and is centrally located relative to the second chamber; the first inlet and the first outlet are located on the side wall of the first housing.

[0013] The first housing also has a first exhaust port that communicates with the filter chamber.

[0014] The backwash filtration mechanism further includes a first drive assembly connected to the cylindrical filter element and / or the first housing, for driving the relative rotation between the cylindrical filter element and the first housing.

[0015] The first drive component includes a motor or an impeller; the motor drives the cylindrical filter element to rotate, so that the cylindrical filter element agitates the liquid in the filter chamber; the impeller is disposed in the second chamber and connected to the cylindrical filter element, and rotates along the circumference of the cylindrical filter element under the hydraulic pressure of the filtered liquid in the second chamber, so as to drive the cylindrical filter element to rotate.

[0016] The bottom wall of the cylindrical filter element is provided with a rotating shaft extending along the axial direction of the cylindrical filter element. The spray element includes a spray arm extending along the axial direction of the cylindrical filter element and toward the bottom wall, and a support portion extending from the spray arm along the radial direction of the cylindrical filter element and toward the central axis of the cylindrical filter element. The end of the rotating shaft portion away from the bottom wall is rotatably connected to the support portion.

[0017] The spray element partially blocks the first filter element; the filtration device also includes a first pumping assembly to provide pumping pressure to the second chamber, so as to create a negative pressure in the second chamber, thereby allowing the liquid to be filtered to flow from the first chamber to the second chamber.

[0018] The first pumping assembly is provided with a first inlet and a first outlet. The first inlet is connected to the second outlet, and the first outlet is connected to the second inlet.

[0019] The filtration device further includes a second housing assembly having a slag collection chamber and a liquid collection chamber. The second housing assembly is provided with a drain port connected to the liquid collection chamber and a liquid collection port. The drain port is connected to the first inlet, and the liquid collection port is used to input the liquid to be filtered.

[0020] The filtration device further includes a diversion mechanism, which is connected to the first outlet and the second inlet respectively. The diversion mechanism is used to divert the filtered liquid output from the second outlet of the first pumping component to the second inlet and the upper part of the collection chamber, so as to use part of the filtered liquid as flushing fluid and the other part of the filtered liquid as cleaning liquid to clean the object to be cleaned located above the collection chamber. The filtered liquid after cleaning the object to be cleaned is collected through the collection chamber to the first inlet.

[0021] The second shell assembly also forms a slag collection chamber, and the second shell assembly is provided with a slag collection port that communicates with the slag collection chamber; the slag collection port is connected to the first outlet to collect the residue discharged from the first chamber.

[0022] The second shell assembly includes a second shell and a third shell. The second shell encloses a liquid collection chamber, and the third shell encloses the second shell. A slag collection chamber is formed between the third shell and the second shell. The first inlet and the first outlet are located at opposite ends on the same side of the first chamber.

[0023] The second housing assembly includes a second housing and a third housing. The second housing forms a liquid collection chamber, and the third housing forms a slag collection chamber. The second housing and the third housing are located on opposite sides of the backwash filter mechanism.

[0024] The backwash filter mechanism and the slag collection mechanism are arranged along a first direction, the first pumping component and the backwash filter mechanism are arranged along a second direction perpendicular to the first direction, and the first pumping component is inclined toward the second housing. The diversion mechanism is arranged between the second housing and the first pumping component. The first direction is parallel to the arrangement direction of the first chamber and the second chamber.

[0025] The backwash filter mechanism, the second housing, and the third housing are arranged along the first direction, and the first pumping assembly and the backwash filter mechanism are arranged along the second direction, which is perpendicular to the first direction; wherein the first direction is parallel to the arrangement direction of the first chamber and the second chamber.

[0026] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a cleaning device. The cleaning device includes: a device body having a cleaning chamber; and the aforementioned filtration device, installed on the device body, for filtering the liquid to be filtered generated in the cleaning chamber.

[0027] The beneficial effects of this application are as follows: The filtration device provided by this application divides the filtration chamber into a first chamber and a second chamber located on both sides of the first filter element through the first filter element, and allows at least part of the liquid to be filtered to flow from the first chamber to the second chamber, thereby achieving filtration of the liquid to be filtered through the first filter element; and by inputting flushing fluid into the second chamber, the residue accumulated on the side of the first filter element near the first chamber can be dislodged and discharged from the first outlet of the first chamber along the first chamber; furthermore, by setting the first chamber outside the second chamber, the first outlet, which is connected to the first chamber and is at least used for discharging residue, is located on the outer periphery of the entire filtration chamber, thereby facilitating the effective residue at the first outlet, reducing the risk of secondary pollution caused by residue residue in the first chamber, thereby improving the filtration effect, optimizing the layout of the backwash slag discharge structure of the filtration device, simplifying the structure of the filtration device, and thereby improving the reliability of the filtration device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0029] Figure 1 This is a cross-sectional schematic diagram of the backwashing filter mechanism in the filter equipment of this application;

[0030] Figure 2 This is a schematic diagram of the structure of an embodiment of the filtration device of this application;

[0031] Figure 3 yes Figure 2 Exploded view of the filtration device in the embodiment;

[0032] Figure 4 yes Figure 2 Cross-sectional schematic diagram of the filtration device in the embodiment;

[0033] Figure 5 yes Figure 2 A top view of the filtration device in the embodiment;

[0034] Figure 6 yes Figure 2 A bottom view of the filtration device in the embodiment;

[0035] Figure 7 yes Figure 2 A schematic diagram of the structure of a portion of the filtration device in the embodiment;

[0036] Figure 8 yes Figure 7 An enlarged structural diagram of structure A in the embodiment;

[0037] Figure 9 yes Figure 2 Schematic diagram of the backwash filtration mechanism in the filtration equipment of the embodiment;

[0038] Figure 10 yes Figure 2 Schematic diagram of the slag collection mechanism in the filtration equipment of the embodiment;

[0039] Figure 11 yes Figure 10 A schematic diagram of the other side of the slag collection mechanism in the embodiment;

[0040] Figure 12 This is a schematic diagram of another embodiment of the filtration device of this application;

[0041] Figure 13 yes Figure 12 Exploded view of the filtration device in the embodiment;

[0042] Figure 14 yes Figure 12 A cross-sectional schematic diagram of the filtration device in the embodiment;

[0043] Figure 15 yes Figure 12 Another cross-sectional view of the filtration device in the embodiment;

[0044] Figure 16 yes Figure 12 A bottom view of the filtration device in the embodiment;

[0045] Figure 17 yes Figure 12 A schematic diagram of the backwash filtration mechanism, the second housing, and the annular filter element in the filtration device of the embodiment;

[0046] Figure 18 yes Figure 12 A schematic diagram of the structure of the second housing, the fourth housing, and the second liquid collection tray in the filtration device of the embodiment;

[0047] Figure 19 This is a schematic diagram of the structure of another embodiment of the filtration device of this application;

[0048] Figure 20 yes Figure 19 Exploded view of the filtration device in the embodiment;

[0049] Figure 21 yes Figure 19 A cross-sectional schematic diagram of the filtration device in the embodiment. Detailed Implementation

[0050] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0051] 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 this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0052] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0053] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0055] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0056] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0057] This application first proposes a filtration device, such as... Figures 1 to 11 As shown, Figure 1 This is a cross-sectional schematic diagram of the backwashing filter mechanism in the filter equipment of this application; Figure 2 This is a schematic diagram of the structure of an embodiment of the filtration device of this application; Figure 3 yes Figure 2 Exploded view of the filtration device in the embodiment; Figure 4 yes Figure 2 Cross-sectional schematic diagram of the filtration device in the embodiment; Figure 5 yes Figure 2 A top view of the filtration device in the embodiment; Figure 6 yes Figure 2 A bottom view of the filtration device in the embodiment; Figure 7 yes Figure 2 A schematic diagram of the structure of a portion of the filtration device in the embodiment; Figure 8 yes Figure 7 An enlarged structural diagram of structure A in the embodiment; Figure 9 yes Figure 2 Schematic diagram of the backwash filtration mechanism in the filtration equipment of the embodiment; Figure 10 yes Figure 2 Schematic diagram of the slag collection mechanism in the filtration equipment of the embodiment; Figure 11 yes Figure 10 A schematic diagram of the other side of the slag collection mechanism in the embodiment.

[0058] like Figure 1 , Figure 4 and Figure 8As shown, the filtration device of this embodiment includes a backwash filtration mechanism 10. The backwash filtration mechanism 10 is provided with a filtration chamber 1. The filtration chamber 1 is provided with a first filter element 12. The first filter element 12 divides the filtration chamber 1 into a first chamber 13 and a second chamber 14. The first chamber 13 is located outside the second chamber 14. The filtration chamber 1 is provided with a first inlet A1 and a first outlet B1 communicating with the first chamber 13. The filtration chamber 1 is provided with a second inlet A2 and a second outlet B2 communicating with the second chamber 14. The first inlet A1 is used to input the liquid to be filtered, the second inlet A2 is used to input the flushing fluid, and the second outlet B2 is used to output at least a portion of the filtered liquid. The first outlet B1 is used to output at least the residue in the liquid to be filtered. The first filter element 12 is used to filter the liquid to be filtered input from the first inlet A1, and the flushing fluid input from the second inlet A2 is used to flush the first filter element 12.

[0059] The first chamber 13 is located outside the second chamber 14. At least a portion of the liquid to be filtered, which is input from the first inlet A1 connected to the first chamber 13, flows from the first chamber 13 through the first filter element 12 to the second chamber 14, so as to filter this portion of the liquid to be filtered by the first filter element 12. The residue accumulates on the side of the first filter element 12 near the first chamber 13. At least a portion of the filtered liquid in the second chamber 14 can be discharged from the second outlet B2 connected to the second chamber 14. At least a portion of the flushing fluid input from the second inlet A2 connected to the second chamber 14 flows from the second chamber 14 through the first filter element 12 to the first chamber 13, so as to flush the first filter element 12 towards the first chamber 13, thereby causing the residue accumulated on the side of the first filter element 12 near the first chamber 13 to fall off the first filter element 12 and flow out from the first outlet B1 along with another portion of the liquid to be filtered in the first chamber 13.

[0060] The mixture discharged from the first outlet B1 contains residue, as well as a portion of the flushing fluid introduced from the second inlet A2, and / or a portion of the liquid to be filtered introduced from the first inlet A1, and / or a portion of the filtered liquid flowing out from the second chamber 14. Discharging the solid-liquid mixture containing residue from the first outlet B1 can improve the fluidity of the residue, thereby improving the sludge discharge efficiency of the filtration device.

[0061] The flushing fluid may include gas, liquid, or a gas-liquid mixture.

[0062] Optionally, the backwash filtration mechanism 10 includes a first housing assembly 11 having a filter chamber 1 and a first filter element 12 disposed in the filter chamber 1; the first housing assembly 11 is also provided with a first inlet A1 and a first outlet B1 communicating with the first chamber 13, and the first housing assembly 11 is also provided with a second inlet A2 and a second outlet B2 communicating with the second chamber 14.

[0063] Optionally, in this embodiment, the backwashing of the first filter element 12 by the flushing fluid and the filtration of the liquid to be filtered by the first filter element 12 can be carried out synchronously or asynchronously.

[0064] This embodiment can also control the on / off transmission of flushing fluid to the second inlet A2 via a switching valve.

[0065] In this embodiment, the filter chamber 1 is divided into a first chamber 13 and a second chamber 14 located on both sides of the first filter element 12, and at least part of the liquid to be filtered flows from the first chamber 13 to the second chamber 14, so that the liquid to be filtered can be filtered by the first filter element 12. Furthermore, by inputting flushing fluid into the second chamber 14, the residue accumulated on the side of the first filter element 12 near the first chamber 13 can be dislodged and discharged from the first outlet B1 of the first chamber 13. In addition, by setting the first chamber 13 outside the second chamber 14, the first outlet B1, which is connected to the first chamber 13 and is at least used for discharging residue, is located on the outer periphery of the entire filter chamber 1, thereby facilitating the effective discharge of residue from the first outlet B1, reducing the risk of secondary pollution caused by residue residue in the first chamber 13, thereby improving the filtration effect, optimizing the layout of the backwashing and slag discharge structure of the filter equipment, simplifying the structure of the filter equipment, and thus improving the reliability of the filter equipment.

[0066] Optionally, such as Figure 4 , Figure 5 and Figure 6 As shown, the filtration device in this embodiment further includes a diversion mechanism 60, which is connected to the second inlet A2. The diversion mechanism 60 is used to divert part of the cleaning liquid into rinsing fluid and divert another part of the cleaning liquid to the object to be cleaned, so as to clean the object to be cleaned. The liquid to be filtered after cleaning the object to be cleaned is collected to the first inlet A1.

[0067] In this embodiment, the diversion mechanism 60 is used to divert the cleaning fluid used to clean the object to be cleaned and the cleaning fluid used as rinsing fluid. This allows the two diversion branches to share the same source and enables filtration and backwashing to be carried out simultaneously, thereby improving filtration efficiency and filtration effect.

[0068] Optionally, the first filter element 12 can be a filter screen.

[0069] Optionally, such as Figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, the backwash filtration mechanism 10 of this embodiment further includes a spray element 15; the spray element 15 is disposed in the second chamber 14 and is connected to the second inlet A2, for guiding the flushing fluid input from the second inlet A2 to the first filter element 12.

[0070] The spray channel of the spray component 15 is connected to the second inlet A2.

[0071] In this embodiment, the spray element 15 guides the flushing fluid input from the second inlet A2 into the second chamber 14, which can shorten the flow path between the flushing fluid outlet and the first filter element 12, reduce the hydraulic pressure loss of the flushing fluid in the second chamber 14, thereby increasing the flushing pressure of the flushing fluid on the first filter element 12, and thus improving the flushing effect of the flushing fluid on the first filter element 12.

[0072] Optionally, the spray element 15 can be integrally installed with the first housing assembly 11 or can be detached.

[0073] Optionally, such as Figure 1 , Figure 4 , Figures 7 to 9 As shown, the first filter element 12 in this embodiment includes a cylindrical filter element with a bottom wall, and the bottom wall of the cylindrical filter element is connected to the first housing assembly 11; the second chamber 14 is located inside the cylindrical filter element, and the first chamber 13 is located outside the cylindrical filter element.

[0074] The cylindrical filter element having a bottom wall means that the cylindrical filter element includes a bottom wall and an annular side wall connected to the bottom wall, and the bottom wall and the annular side wall surround to form a columnar filter cavity with an opening at one end.

[0075] The bottom wall of the cylindrical filter element is connected to the first housing assembly 11.

[0076] In this embodiment, the first filter element 12 is implemented by a cylindrical filter element, which can surround the second chamber 14 with the first chamber 13, thereby increasing the filtration area of ​​the first filter element 12 in a limited space, thereby improving the filtration effect and efficiency; and the bottom wall of the cylindrical filter element is connected to the first housing assembly 11, which can increase the connection stability between the cylindrical filter element and the first housing assembly 11, thereby improving the reliability of the filtration equipment.

[0077] Optionally, the cylindrical filter element in this embodiment includes an annular filter section 121 and a mounting section 122 connected to the end of the annular filter section 121 facing away from the second outlet B2. The mounting section 122 is connected to the first housing assembly 11.

[0078] The mounting portion 122 serves as the bottom wall of the cylindrical filter element and is connected to the first housing assembly 11. The mounting portion 122 can be a sealing plate and does not have a filtering function, thus reducing the impact of liquids or residues on the connection structure between the mounting portion 122 and the first housing assembly 11. The second chamber 14 is located within the annular filter portion 121, and the first chamber 13 is located between the annular filter portion 121 and the inner wall of the filter chamber 1.

[0079] Optionally, the mounting part 122 is provided with a plug-in part, such as a protrusion, on the side opposite to the second chamber 14, which is plugged into and connected to the inner wall of the filter chamber 1.

[0080] In another embodiment, the connection between the mounting part and the first housing assembly can also be achieved through other connection methods.

[0081] In another embodiment, the bottom wall of the cylindrical filter element may be provided with a filtration structure to achieve filtration of the liquid to be filtered.

[0082] In another embodiment, the first filter element may consist only of an annular filter portion, the end of which is connected to the first housing assembly.

[0083] In another embodiment, the first filter element may also be of other shapes, such as a square tube or a plate.

[0084] Optionally, the spray member 15 includes at least one spray arm extending axially along the cylindrical filter element, and the spray arm has a plurality of spray nozzles 151 spaced axially and facing the cylindrical filter element.

[0085] Optionally, in this embodiment, the spray element 15 extends along the axial direction of the cylindrical filter element.

[0086] The opening of the cylindrical filter element faces and communicates with the second outlet B2. The bottom wall of the cylindrical filter element is connected to the first housing assembly 11. The spray element 15 extends along the axial direction of the cylindrical filter element toward the bottom of the cylindrical filter element. The spray element 15 is provided with multiple spray nozzles 151 spaced axially and facing the cylindrical filter element, so that the spray element 15 can guide the rinsing fluid to different depth positions inside the cylindrical filter element, thereby improving the rinsing uniformity of different depth positions of the cylindrical filter element and improving the cleaning effect. Furthermore, the spray element 15 can be arranged to extend along the inner side wall of the cylindrical filter element, which can reduce the impact of the spray element 15 on the flow channel space in the second chamber 14 and reduce the spray path length between the spray nozzles 151 and the cylindrical filter element, thereby improving the spray rinsing effect on the cylindrical filter element.

[0087] Optionally, such as Figures 1 to 9 As shown, in this embodiment, the spray element 15 partially blocks the first filter element 12; the filtration device also includes a first pumping assembly 50, which provides pumping pressure to the second chamber 14 to form a negative pressure in the second chamber 14, thereby causing the washing liquid to flow from the first chamber 13 to the second chamber 14.

[0088] Optionally, in this embodiment, the spray member 15 partially blocks the sidewall of the cylindrical filter element. Partial blocking of the sidewall of the cylindrical filter element by the spray member 15, for example, partially blocking the annular filter section 121, means that a portion of the sidewall of the cylindrical filter element is not blocked by the spray member 15.

[0089] The first pumping assembly 50 provides pumping pressure to the liquid in the second chamber 14, so that at least a portion of the filtered liquid in the second chamber 14 is discharged from the second outlet B2, which can form a pressure difference inside the first filter element 12, specifically, the outer pressure is greater than the inner pressure, and the spray element 15 does not completely block the side wall of the first filter element 12, thereby allowing the liquid to be filtered to flow quickly into the first chamber 13 from the first inlet A1, improving the cleaning efficiency.

[0090] In another embodiment, the first pumping assembly 50 may also be connected to the first inlet A1 or the second return port E3 (see below) to drain liquid into the filter chamber 1.

[0091] Optionally, the first pumping assembly 50 is provided with a first inlet F1 and a first outlet F2. The first inlet F1 is connected to the second outlet B2, and the first outlet F2 is connected to the second inlet A2. In this way, the filtered liquid can be recycled as backflushing liquid to backflush the first filter element 12, thereby saving energy.

[0092] Optionally, the spray element 15 includes a plurality of spray arms spaced apart circumferentially along the cylindrical filter element, the plurality of spray arms extending axially along the cylindrical filter element and symmetrically arranged about the central axis of the cylindrical filter element.

[0093] This embodiment utilizes multiple spray arms spaced circumferentially along the cylindrical filter element to achieve spray rinsing, improving the circumferential rinsing uniformity. Furthermore, the multiple spray arms extend axially along the cylindrical filter element, enhancing the axial rinsing uniformity. Moreover, the multiple spray arms are symmetrically arranged around the central axis of the cylindrical filter element, further improving the circumferential rinsing uniformity. Therefore, this embodiment can improve the removal efficiency of residue remaining on the cylindrical filter element, thereby improving filtration efficiency and effectiveness.

[0094] The number of multiple spray arms can be 2, 3, etc., and there is no specific limit.

[0095] In other embodiments, the number of spray arms can be one.

[0096] Optionally, such as Figure 1 , Figure 4 , Figure 9 As shown, the first outlet B1 is positioned away from the second outlet B2 relative to the first inlet A1, which allows the liquid to be filtered from the first inlet A1 to be quickly filtered and then enter the second chamber 14, and quickly exit from the second outlet B2, thereby improving filtration efficiency. Furthermore, the first outlet B1 for slag discharge is positioned away from the second outlet B2, which reduces the risk of residue passing through the first filter element 12 and entering the second chamber 14 to be discharged from the second outlet B2.

[0097] Optionally, such as Figure 8 , Figure 9 As shown, the first housing assembly 11 of this embodiment includes: a first housing 111 and an end cap 112; wherein, the first housing 111 forms a receiving cavity with an opening at one end, and the first housing 111 is provided with a first inlet A1, a second inlet A2, a first outlet B1 and a second outlet B2; the end cap 112 covers the opening to form a filter cavity 1 in the receiving cavity.

[0098] In this embodiment, the first housing assembly 11 is realized by the separate first housing 111 and end cap 112, which makes it easier for the first filter element 12 to be installed into the filter chamber 1 from the opening of the first housing 111, thereby improving the assembly convenience of the backwash filter mechanism 10.

[0099] Optionally, the second outlet B2 is located on the end wall of the first housing 111 away from the end cover 112 and is centrally located relative to the second chamber 14; the first inlet A1 and the first outlet B1 are located on the side wall of the first housing 111.

[0100] The second outlet B2, which communicates with the second chamber 14 and is used to output the filtered liquid, is located on the end face of the first housing 111 and is centrally located relative to the second chamber 14. This can improve the uniformity of pressure of the liquid in the first filter element 12 at various positions along the circumference, thereby improving the filtration effect of the first filter element 12 on the liquid to be filtered at various positions along the circumference, and thus improving the filtration efficiency. The first inlet A1, which communicates with the first chamber 13 and is used to input the liquid to be filtered, and the first outlet B1, which is used to output the residue in the first chamber 13, are located on the side of the filter chamber 1. This facilitates slag discharge, optimizes the layout of the first chamber 13, the second chamber 14, and other structures, simplifies the structure of the filtration equipment, and reduces its size.

[0101] The spray element 15 is connected to one end of the first housing 111 away from the end cap 112, so as to facilitate communication with the second inlet A2 for inputting flushing fluid; and the spray element 15 can be detached from or integrally installed with the first housing 111.

[0102] Optionally, the first filter element 12 is connected to the end cap 112, which can improve the installation stability of the first filter element 12.

[0103] In another embodiment, the first housing assembly may be implemented using two housings that overlap each other.

[0104] Optionally, the backwash filtration mechanism 10 further includes: a first drive assembly connected to the cylindrical filter element and / or the spray element 15, for driving relative rotation between the cylindrical filter element and the spray element 15.

[0105] In one application scenario, the first drive component drives the cylindrical filter element to rotate, thereby agitating the liquid in the filter chamber 1. This not only increases the flow rate of the liquid but also increases the probability of residues separating from the cylindrical filter element, thus improving the filtration effect.

[0106] The first drive assembly drives the cylindrical filter element to rotate. The rotation of the cylindrical filter element can improve the stability of rotation and reduce the rotation space, thereby improving the reliability of the filtration equipment and reducing its size.

[0107] In another application scenario, the first driving component drives the spray component 15 to rotate, or drives the cylindrical filter component and the spray component 15 to rotate simultaneously and in opposite directions, etc., as long as the cylindrical filter component and the spray component 15 can generate relative motion.

[0108] Optionally, the first drive assembly includes a motor 161, which drives the cylindrical filter element to rotate so that the cylindrical filter element actively drives the liquid in the filter chamber 1.

[0109] In this embodiment, the liquid in the filter chamber 1 is actively disturbed by the motor 161, which can improve the disturbance effect and the filtration effect.

[0110] In other embodiments, a driving component such as an electric cylinder may be used instead of a motor.

[0111] Optionally, in this embodiment, the bottom wall of the cylindrical filter element extends along the axial direction of the cylindrical filter element and is provided with a pivot portion 124. The spray element 15 includes a spray arm extending along the axial direction of the cylindrical filter element and toward the bottom wall, and a support portion 123 extending from the spray arm along the radial direction of the cylindrical filter element and toward the central axis of the cylindrical filter element. The end of the pivot portion 124 facing away from the bottom wall is rotatably connected to the support portion 123.

[0112] The rotating shaft 124 is located inside the second chamber 14.

[0113] In some embodiments, the spray arm can be fixedly connected to the first housing 111 or integrally formed. In this embodiment, the spray arm is connected to the bottom of the cylindrical filter element through the rotating shaft 124 and the support 123, which can further improve the stability of the rotation of the cylindrical filter element, thereby improving the reliability of the filtration equipment.

[0114] In some embodiments, the spray arm is not fixedly connected to the first housing 111, and the spray arm can be supported by the pivot 124 and the support 123.

[0115] Optionally, the support portion 123 is located at the middle of the spray arm along the axial direction of the cylindrical filter element.

[0116] Optionally, the first drive assembly further includes a first bearing 163, an oil seal 164, and a rotating shaft 165; the motor 161 is disposed on the side of the end cover 112 away from the second chamber 14, the end cover 112 is provided with a limiting through hole, and the output shaft of the motor 161 is rotatably disposed with the side wall of the limiting through hole of the end cover 112; the bottom of the cylindrical filter element is provided with a limiting blind hole on the side away from the second chamber 14, one end of the rotating shaft 165 is rotatably disposed with the side wall of the limiting through hole through the first bearing 163, and an oil seal 164 is disposed in the limiting through hole and fixedly connected to the output shaft of the motor 161; the other end of the rotating shaft 165 is limited in the limiting blind hole and fixedly connected to the side wall of the limiting blind hole; the support part 123 is provided with a limiting hole on the side near the bottom of the cylindrical filter element, and the end of the rotating shaft part 124 away from the bottom of the cylindrical filter element is disposed in the limiting hole and is rotatably connected to the inner wall of the limiting hole through a third bearing.

[0117] In other embodiments, the relative rotation between the cylindrical filter element and the spray element can also be achieved in other ways.

[0118] Optionally, a first sealing ring 166 is provided between the end cap 112 and the first housing 111 to improve the sealing performance of the filter chamber 1 at the connection between the end cap 112 and the first housing 111.

[0119] Optionally, the first housing 111 is further provided with a first exhaust port communicating with the filter chamber 1.

[0120] The liquid to be filtered usually contains some gas. In order to improve the filtration effect and reduce the impact of gas on filtration, a first exhaust port can be set for the filter chamber 1 to discharge the gas.

[0121] Optionally, since the gas will be punctured when it passes through the first filter element 12, the first exhaust port can be connected to the first chamber 13 so that the gas can be quickly discharged from the filter chamber 1.

[0122] Optionally, the first exhaust port and the second inlet A2 may be located on the end wall of the first housing 111 away from the end cover 112. The first exhaust port and the second inlet A2 are provided on the outer peripheral region of the end wall of the first housing 111 away from the end cover 112, and a protrusion is provided in the middle region of the end wall, on which a second outlet B2 communicating with the second chamber 14 is provided.

[0123] In another embodiment, an exhaust port may be provided for a second chamber, or for both the first chamber and the second chamber.

[0124] Optionally, such as Figure 4 , Figure 5 , Figure 10 and Figure 11As shown, the filtration device also includes a slag collection mechanism 20, which includes a second housing assembly 22. The second housing assembly 22 forms a liquid collection chamber 23. The second housing assembly 22 is provided with a drain port D1 and a collection port D2 that communicate with the liquid collection chamber 23. The drain port D1 is connected to the first inlet A1, and the collection port D2 is used to input the liquid to be filtered.

[0125] The filtration device in this embodiment is provided with a liquid collection chamber 23, which is connected to the first inlet A1 of the first chamber 13. The liquid collection chamber 23 can collect the liquid to be filtered through the liquid collection port D2 and transport the collected liquid to be filtered to the first chamber 13 through the first inlet A1. In this way, the automatic collection of the liquid to be filtered can be achieved, thereby improving the collection efficiency of the liquid to be filtered.

[0126] In another embodiment, the liquid to be filtered can also be collected by other instruments and delivered to the first inlet.

[0127] Optionally, such as Figure 4 , Figure 11 As shown, the second housing assembly 22 also includes a slag collection chamber 21 and a slag collection port D3 communicating with the slag collection chamber 21; the slag collection port D3 is connected to the first outlet B1 to collect the residue discharged from the first chamber 13. In this embodiment, the slag collection chamber 21 and the slag collection port D3 can collect the residue discharged from the first chamber 13, which can improve the problem of residue accumulation in the first chamber 13 and improve the filtration efficiency and filtration effect.

[0128] Optionally, such as Figures 2 to 7 As shown, the filtration device also includes a second pumping assembly 40, which is disposed at the slag discharge port E1 and is used to discharge the residue in the slag collection chamber 21 from the slag discharge port E1.

[0129] In this embodiment, the residue is discharged through the slag discharge port E1 connected to the slag collection chamber 21 to improve the problems of residue accumulation and pollution in the slag collection chamber 21; and in this embodiment, the active and automatic discharge of residue in the slag collection chamber 21 is achieved through the pumping component 40, which can improve the discharge efficiency of residue.

[0130] In another embodiment, active automatic slag discharge can be achieved through other mechanisms; or the bottom wall of the slag collection chamber can be set as an incline, and the height of the slag discharge port can be lower than the height of the first outlet, so that the residue can be passively and automatically discharged under the action of gravity; or the residue can be discharged manually.

[0131] Optionally, such as Figures 2 to 5 , Figure 10 and Figure 11 As shown, the second housing assembly 22 is also provided with a first return port E2 communicating with the slag collection chamber 21; the filtration device also includes: a second filter element 24, which is disposed in the slag collection chamber 21 and located between the slag discharge port E1 and the first return port E2.

[0132] The residue discharged from the first outlet B1 is mixed with the filtering fluid, such as the liquid to be filtered and the rinsing fluid. After some residue and the filtrate in the slag collection chamber 21 are discharged through the first outlet B1, some residue and filtrate will remain in the slag collection chamber 21. In order to achieve complete filtration of the residue, the second housing assembly 22 of this embodiment is provided with a first return port E2 communicating with the slag collection chamber 21, and the mixture discharged from the first outlet B1 is further filtered by the second filter element 24 provided at the slag discharge port E1 and the first return port E2, and the filtered liquid of the mixture is returned through the first return port E2, which can improve the filtration effect of the filtration equipment.

[0133] Optionally, the first return port E2 is connected to the pumping path of the first pumping assembly 50 to the second outlet B2.

[0134] In this embodiment, the first return port E2 is connected to the pumping path of the first pumping component 50 to the second outlet B2, so that the first pumping component 50 pumps out the filtered liquid output from the first return port E2, thereby improving the filtration efficiency.

[0135] Optionally, the first return port E2 and the slag collection port D3 are respectively connected to the opposite ends of the filter chamber 1. That is, the first return port E2 and the slag collection port D3 are respectively connected to the filter chamber 1 and are located at the opposite ends of the filter chamber 1. This structure can extend the length of the slag collection chamber 21 and form a swirling channel, so that the residue mixture swirls and collects slag in the slag collection chamber 21. This structure can also reduce the influence of the fluid returning after slag collection on the discharge of the residue mixture to the slag collection chamber 21, and can improve the slag collection effect.

[0136] Optionally, such as Figure 4 , Figure 9 As shown, the first housing 111 is provided with a second reflux port E3 that communicates with the second chamber 14. The first reflux port E2 is connected to the second reflux port E3 so that the filtered liquid output from the first reflux port E2 is output to the first pumping assembly 50 through the second outlet B2, so that the first pumping assembly 50 can pump all the filtered liquid through the second outlet B2.

[0137] In another embodiment, the first reflux port can be directly connected to the first pumping component, or the filtered liquid in the slag collection chamber can be pumped through another pumping component.

[0138] The slag collection chamber 21 can be arranged in an arc shape or a partial circle.

[0139] The first outlet B1 and the second return port E3 are located at opposite ends of the first housing 111, with the first outlet B1 located away from the second outlet B2 and the second return port E3 located close to the second outlet B2.

[0140] The first return port E2 is connected to the second return port E3, and the slag collection port D3 is connected to the first outlet B1. This structure can extend the length of the slag collection chamber 21 and form a swirling channel, so that the residue mixture swirls and collects slag in the slag collection chamber 21. This structure can also reduce the influence of the fluid returning after slag collection on the discharge of the residue mixture to the slag collection chamber 21, and can improve the slag collection effect.

[0141] Optionally, such as Figure 4 As shown, the filtration device also includes a third filter element 25, which is disposed in the liquid collection chamber 23 and is used to perform primary filtration on the liquid to be filtered flowing into the liquid collection chamber 23. The liquid to be filtered after primary filtration flows into the first chamber 13 through the drain port D1 and the first inlet A1 of the liquid collection chamber 23.

[0142] In this embodiment, the liquid to be filtered is initially filtered by the third filter element 25, then secondary filtration is performed by the first filter element 12, and tertiary filtration is performed by the second filter element 24, which can improve the filtration effect.

[0143] Optionally, the pore size of the first filter element 12 is smaller than the pore size of the third filter element 25 disposed in the liquid collection chamber 23; the pore size of the second filter element 24 disposed in the slag collection chamber 21 is smaller than the pore size of the first filter element 12.

[0144] Optionally, such as Figure 4 , Figure 5 and Figure 6 As shown, the filtration device also includes a diversion mechanism 60, which is connected to the first outlet F2 and the second inlet A2 respectively. The diversion mechanism 60 is used to divert the filtered liquid output from the first pumping assembly 50 from the second outlet B2 and the first return port E2 to the second inlet A2 and above the collection chamber 23, so that part of the filtered liquid is used as flushing fluid and the other part of the filtered liquid is used as cleaning liquid to clean the object to be cleaned located above the collection chamber 23. After cleaning the object to be cleaned, the filtered liquid is collected through the collection chamber 23 to the first inlet A1.

[0145] This embodiment achieves the recycling of filtered liquid through the first pumping component 50 and the diversion mechanism 60, which can save cleaning fluid and reduce costs.

[0146] Optionally, such as Figures 3 to 7 As shown, the filtration device also includes a pipeline 30, which is connected to the second inlet A2 and the first outlet F2 respectively. Because the pipeline 30 has high flexibility in its layout, connecting the second inlet A2 and the first outlet F2 through the pipeline 30 can improve the flexibility of the layout between the first pumping assembly 50, the sludge collection mechanism 20 and the backwashing filtration mechanism 10, and improve the applicability of the filtration device.

[0147] Of course, in other embodiments, the second inlet can also be directly connected to the first outlet, or connected through other mechanisms.

[0148] Optionally, such as Figure 11 As shown, the slag collection chamber 21 is provided with two slag collection ports D3; the axial direction of the cylindrical filter element extends horizontally, and the two slag collection ports D3 are spaced apart along the direction of gravity.

[0149] In this embodiment, setting two slag collection ports D3 can improve slag discharge efficiency. The two slag collection ports D3 are arranged along the direction of gravity, which can discharge residues of different weights or different degrees of deposition through different slag collection ports D3, thereby improving slag discharge efficiency.

[0150] Optionally, the bottom wall of the slag collection chamber 21 is provided with a slag collection trough that communicates with the slag collection port D3 located below.

[0151] In this embodiment, a slag collection trough is provided on the bottom wall of the slag collection chamber 21 and is connected to the slag collection port D3. This allows the residue to accumulate in the slag collection trough under the action of gravity, which can further settle and accumulate the residue in the slag collection chamber 21, avoid being disturbed by the liquid, and facilitate the rapid discharge of the residue.

[0152] Optionally, such as Figure 2 and Figure 10 As shown, the second housing 221 is also provided with a second exhaust port C2 that communicates with the liquid collection chamber 23.

[0153] The liquid to be filtered usually contains some gas. In order to improve the filtration effect and reduce the impact of gas on filtration, a second exhaust port C2 can be set for the filter chamber 1 to discharge the gas.

[0154] Optionally, such as Figures 2 to 4 , Figure 7 , Figure 10 As shown, the second housing assembly 22 includes a second housing 221 and a third housing 222. The second housing 221 surrounds and forms a liquid collection chamber 23. The third housing 222 surrounds the second housing 221, and a slag collection chamber 21 is formed between the third housing 222 and the second housing 221. The first inlet A1 and the first outlet B1 are located at opposite ends on the same side of the first chamber 13.

[0155] In this embodiment, the second housing assembly 22 is realized by separate second housing 221 and third housing 222, which can improve the ease of assembly and cleaning of the second housing assembly 22. Furthermore, the third housing 222 is arranged around the second housing 221 to form a slag collection chamber 21 with the second housing 221. This allows the length of the slag collection chamber 21 to be extended without increasing the overall size of the second housing assembly 22, thereby increasing its space. Therefore, the volume of the liquid collection chamber 23 and the slag collection chamber 21 can be increased without increasing the overall size of the second housing assembly 22, which is conducive to the miniaturization of the filtration equipment. Moreover, the slag collection chamber 21 is located on the outer periphery of the liquid collection chamber 23, which facilitates the discharge of residue.

[0156] The second shell 221 is provided with a drain port D1 and a collection port D2; the third shell 222 forms a slag collection chamber 21, and the third shell 222 is provided with a slag collection port D3, a first reflux port E2 and a slag discharge port E1.

[0157] The first reflux port E2, the slag collection port D3, and the liquid discharge port D1 are located on the same side of the first housing 111, which facilitates communication with the first chamber 13 and the second outlet B2 of the first housing 111, thereby optimizing the layout and simplifying the structure.

[0158] Optionally, the first outlet B1 is located on the same side as the first inlet A1 and the second return port E3 on the side of the first housing close to the backwash filter mechanism 10; the second outlet B2, the second inlet A2 and the first exhaust port C1 are provided at the end of the first housing 111 away from the end cover 112.

[0159] Optionally, such as Figure 2 , Figure 3 , Figure 5 , Figure 7 , Figure 10 and Figure 11 As shown, the second housing assembly 22 further includes a first liquid collection tray 224, which is disposed on the third housing 222 and the second housing 221, and has a liquid inlet communicating with the liquid collection port D2.

[0160] In this embodiment, the liquid collection area of ​​the liquid collection chamber is expanded by the first liquid collection plate 224, which increases the liquid collection capacity of the liquid collection port D2 and improves the liquid collection effect of the liquid collection chamber.

[0161] The third housing 222 can form a slag collection cavity 21 with an opening at the top, and the first liquid collection plate 224 is placed at the opening of the third housing 222 to close the opening. That is, the first liquid collection plate 224, the third housing 222, and the second housing 221 together form the slag collection cavity 21, which improves the compactness of the structure.

[0162] Of course, in other embodiments, the third housing or the third housing and the second housing form a slag collection cavity.

[0163] Optionally, the second housing assembly 22 further includes: a second sealing ring 223 and a cover, the cover being disposed on the first liquid collection tray 224 and having a liquid inlet communicating with the liquid collection chamber 23; the second sealing ring 223 being disposed between the first liquid collection tray 224 and the cover.

[0164] Optionally, such as Figures 2 to 4 As shown, the diversion mechanism 60 includes: a fourth housing 225 and a diversion valve 228; the fourth housing 225 forms a diversion chamber communicating with the first liquid outlet F2 and a spray port 227 communicating with the diversion chamber; the fourth housing 225 is disposed below the first liquid collection tray 224, and the spray port 227 extends to the side of the first liquid collection tray 224 away from the fourth housing 225; the diversion valve 228 is disposed at the diversion chamber and is used to control the opening and closing of the diversion chamber.

[0165] This embodiment utilizes a fourth housing 225 and a diversion valve 228 located within the fourth housing 225 to realize a diversion mechanism 60. This mechanism protects the diversion valve 228 and establishes a diversion chamber. The diversion valve 228 controls the flow and cut-off of liquid within the diversion chamber, achieving diversion control. Furthermore, the fourth housing 225 is positioned below the first collection tray 224, allowing the liquid sprayed from the nozzle 227 of the fourth housing 225 to directly clean the object to be cleaned. The liquid to be filtered falls directly onto the first collection tray 224 under gravity, reducing the path of the liquid sprayed onto the object to be cleaned. This facilitates the miniaturization of the filtration equipment and reduces the pressure loss of the liquid spray, thereby improving the cleaning effect.

[0166] This application does not limit the number of nozzles 227, which can be determined according to the cleaning requirements.

[0167] Optionally, the fourth housing 225 extends to form a pumping channel 229, which communicates with the first pumping assembly 50 and the diversion chamber. The pipe 30 connecting the first inlet A1 is connected to the pumping channel 229 so that the control of the diversion valve 228 over the liquid flow in the diversion chamber will not affect the flushing fluid. The cleaning and / or backflushing slag removal work can be selectively performed to improve the applicability of the filtration equipment.

[0168] Optionally, such as Figure 2 , Figures 4 to 7 As shown, the backwash filter mechanism 10 and the second housing assembly 22 are arranged along the first direction, the first pumping assembly 50 and the backwash filter mechanism 10 are arranged along the second direction perpendicular to the first direction, and the first pumping assembly 50 is inclined toward the second housing 221. The diversion mechanism 60 is disposed between the second housing 221 and the first pumping assembly 50; wherein, the first direction is parallel to the arrangement direction of the first chamber 13 and the second chamber 14.

[0169] In this embodiment, the backwash filter mechanism 10, the second housing assembly 22, and the first pumping assembly 50 are arranged in two mutually perpendicular directions, which optimizes the layout. Furthermore, the first pumping assembly 50 is inclined toward the second housing 221, and the diversion mechanism 60 is located between the second housing 221 and the first pumping assembly 50, which reduces the layout space. Moreover, the arrangement direction of the backwash filter mechanism 10 and the second housing assembly 22 is aligned with the arrangement direction of the first chamber 13 and the second chamber 14, which facilitates the communication between the ports of the second housing assembly 22 and the ports of the backwash filter mechanism 10.

[0170] Optionally, the first housing 111, the second housing 221 and the third housing 222 in this embodiment are integrally arranged, which can improve sealing and integration, and improve reliability and miniaturization design.

[0171] Optionally, such as Figure 3 As shown, the filtration device in this embodiment also includes a temperature sensor 70, which is installed in the diversion mechanism 60 to detect the temperature of the cleaning fluid, so as to monitor the temperature of the cleaning fluid and improve the cleaning effect.

[0172] Optionally, the filtration device may also include a heating device, which heats the cleaning fluid based on the temperature control of the cleaning fluid to improve the cleaning effect.

[0173] The backwash filter mechanism 10 and the slag collection mechanism 20 of this embodiment, namely the vortex slag collection mechanism, can separate the residue from the circulating water, achieve clean water cleaning, and avoid secondary pollution. The backwash filter mechanism 10 of this embodiment can automatically clean the first filter element 12 through the backwash jet, and the first filter element does not require manual maintenance. This embodiment can ensure a stable water output of the first pumping component 50, improve pumping efficiency, and make it easier to discharge the accumulated residue.

[0174] In another embodiment, such as Figures 12 to 18 As shown, Figure 12 This is a schematic diagram of another embodiment of the filtration device of this application; Figure 13 yes Figure 12 Exploded view of the filtration device in the embodiment; Figure 14 yes Figure 12 A cross-sectional schematic diagram of the filtration device in the embodiment; Figure 15 yes Figure 12 Another cross-sectional view of the filtration device in the embodiment; Figure 6 yes Figure 12 A bottom view of the filtration device in the embodiment; Figure 7 yes Figure 12 A schematic diagram of the backwash filtration mechanism, the second housing, and the annular filter element in the filtration device of the embodiment; Figure 18 yes Figure 12A schematic diagram of the structure of the second housing, the fourth housing, and the second liquid collection tray in the filtration device of the embodiment.

[0175] like Figures 12 to 16 , Figure 18 As shown, the second housing assembly 22 in this embodiment includes a second housing 221 and a third housing 222. The second housing 221 forms a liquid collection chamber 23, and the third housing 222 forms a slag collection chamber 21. The second housing 221 and the third housing 222 are located on opposite sides of the backwash filter mechanism 10. The second housing 221 is provided with a drain port D1 and a liquid collection port D2; the third housing 222 is provided with a slag collection port D3 and a slag discharge port E1.

[0176] The filtration device in this embodiment and Figures 1 to 11 The difference shown is:

[0177] In this embodiment, the second housing 221 and the third housing 222 are located on opposite sides of the backwash filter mechanism 10, which can reduce the mutual interference between liquid collection and slag collection.

[0178] Optionally, such as Figure 14 , Figure 15 and Figure 17 As shown, the slag collection mechanism 20 includes an annular filter element 26 disposed in the slag collection chamber 21. The annular filter element 26 divides the slag collection chamber 21 into a third chamber 211 located outside the annular filter element 26 and a fourth chamber 212 located inside the annular filter element 26.

[0179] In this embodiment, the residue in the slag collection chamber 21 is filtered by the annular filter element 26. The third chamber 211 is arranged around the outer periphery of the fourth chamber 212, thereby increasing the filtration area in a limited space and improving the filtration effect and efficiency.

[0180] Optionally, the annular filter element 26 can be an annular filter screen.

[0181] This embodiment not only extends the length of the slag collection chamber 21 but also forms a swirling channel, allowing the residue mixture to swirl and collect within the chamber. This structure also reduces the impact of the fluid returning after slag collection on the discharge of the residue mixture into the slag collection chamber 21, thus improving the slag collection effect. Furthermore, the annular filter element 26 further enhances the slag collection effect of the residue mixture within the slag collection chamber 21.

[0182] Optionally, such as Figure 17 As shown, the third housing 222 includes a cylindrical part 2221 and an end cap 2222. The end cap 2222 is placed over the opening of the cylindrical part 2221 to form a slag collection chamber. The annular filter element 26 is disposed in the slag collection chamber and connected to the end cap 2222 to improve its stability.

[0183] Optionally, the second housing assembly 22 further includes a second liquid collection tray 226, which is disposed on the second housing 221 and has a liquid inlet communicating with the liquid collection chamber 23.

[0184] The second liquid tray 226 can also be extended to the fourth housing 225.

[0185] The specific structure of the second liquid collection tray 226 can be found in the first liquid collection tray in the above embodiment.

[0186] Optionally, the first housing 111 and the third housing 222 are integrated, which can improve sealing and integration, as well as improve reliability and miniaturization.

[0187] Optionally, such as Figure 15 and Figure 17 As shown, the first drive assembly of this embodiment includes an impeller 162, which is located in the second chamber 14 and connected to the cylindrical filter element. Under the hydraulic pressure of the filtered liquid in the second chamber 14, the impeller 162 rotates along the circumference of the cylindrical filter element to drive the cylindrical filter element to rotate.

[0188] In this embodiment, the impeller 162 is passively rotated to drive the cylindrical filter element to rotate, thereby passively agitating the liquid in the filter chamber 1, which can improve the filtration effect; and no active drive element is required, which can save energy.

[0189] The working principle, other structures, and extension schemes of this embodiment can be found in the above embodiments.

[0190] In another embodiment, such as Figures 19 to 21 As shown, Figure 19 This is a schematic diagram of the structure of another embodiment of the filtration device of this application; Figure 20 yes Figure 19 Exploded view of the filtration device in the embodiment; Figure 21 yes Figure 19 A cross-sectional schematic diagram of the filtration device of this embodiment. In this embodiment, the backwash filter mechanism 10, the second housing 221 and the third housing 222 are arranged along a first direction, and the first pumping assembly 50 and the backwash filter mechanism 10 are arranged along a second direction perpendicular to the first direction; wherein, the first direction is parallel to the arrangement direction of the first chamber 13 and the second chamber 14.

[0191] In this embodiment, the backwash filter mechanism 10, the second housing 221, the third housing 222 and the first pumping assembly 50 are arranged in two mutually perpendicular directions, which optimizes the layout.

[0192] Optionally, the housing of the first pumping assembly 50, the first housing 111, and the third housing 222 are integrally formed, which can improve sealing and integration, as well as improve reliability and miniaturization.

[0193] The working principle, other structures, and extension schemes of this embodiment can be found in the above embodiments.

[0194] The backwash filtration mechanism adopted in this application can improve filtration efficiency with a limited filter screen (the above-mentioned filter element) area; and there is no squeezing force on the filter screen, which can reduce the secondary pollution problem caused by residue passing through the filter screen; the backwash filtration mechanism makes the residue accumulate in the sludge collection chamber and will not stick to the filter screen, which facilitates the discharge of residue.

[0195] The swirl slag collection chamber of this application can collect the residue, separate the residue from the circulating cleaning water, and keep the circulating water clean; and the slag collection chamber is equipped with a drain pump (i.e. the second pumping component mentioned above), which will quickly discharge the residue.

[0196] The filter element described above in this application can be achieved by a filter screen, or by a filter element such as microporous filter paper, non-woven fabric, or wound wire.

[0197] This application further proposes a cleaning device, including: a device body and a filter device, wherein the device body has a cleaning chamber, and the filter device is installed on the device body for filtering the liquid to be filtered generated in the cleaning chamber.

[0198] At least the slag collection mechanism is located inside the cleaning chamber.

[0199] The operation and structure of the filtration equipment can be found in the above embodiments.

[0200] Optionally, the cleaning chamber includes a dishwashing chamber, meaning the cleaning device may include a dishwasher.

[0201] In other embodiments, the cleaning equipment may also include washing machines, automatic beverage machines, and other equipment that requires separation of solids and water.

[0202] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A filtration device, characterized in that, include: A backwash filtration mechanism is provided with a filtration chamber. A first filter element is provided inside the filtration chamber, which divides the filtration chamber into a first chamber and a second chamber. The first chamber is located outside the second chamber. The filtration chamber has a first inlet and a first outlet communicating with the first chamber, and a second inlet and a second outlet communicating with the second chamber. The first inlet is used to input the liquid to be filtered, the second inlet is used to input the flushing fluid, and the second outlet is used to output at least a portion of the filtered liquid. The first outlet (B1) is used to output at least the residue in the liquid to be filtered.

2. The filtration device according to claim 1, characterized in that, The filtration device also includes: The diversion mechanism is connected to the second inlet. The diversion mechanism is used to divert a portion of the filtered liquid into the rinsing fluid and another portion of the filtered liquid to the object to be cleaned, so as to clean the object to be cleaned. The filtered liquid after cleaning the object to be cleaned is collected into the first inlet.

3. The filtration device according to claim 1, characterized in that, The backwash filtration mechanism also includes: A spray element is disposed in the second chamber and communicates with the second inlet to guide the flushing fluid input from the second inlet to the first filter element.

4. The filtration device according to claim 3, characterized in that, The first filter element includes a cylindrical filter element having a bottom wall, the bottom wall of the cylindrical filter element being connected to the inner wall of the filter cavity; The second chamber is located inside the cylindrical filter element, and the first chamber is located outside the cylindrical filter element.

5. The filtration device according to claim 4, characterized in that, The spray element includes at least one spray arm extending axially along the cylindrical filter element, and the spray arm has a plurality of spray nozzles spaced apart along the axial direction and facing the cylindrical filter element.

6. The filtration device according to claim 1, characterized in that, The first exit is positioned away from the second exit relative to the first inlet.

7. The filtration device according to claim 1, characterized in that, The backwash filtration mechanism includes: The first housing forms a receiving cavity with an opening at one end, and the first housing is provided with a first inlet, a second inlet, a first outlet and a second outlet; An end cap is provided on the opening to form the filter chamber by accommodating the cavity.

8. The filtration device according to claim 7, characterized in that, The second outlet is located on the end wall of the first housing away from the end cap and is centrally located relative to the second chamber; the first inlet and the first outlet are located on the side wall of the first housing.

9. The filtration device according to claim 7, characterized in that, The first housing is also provided with a first exhaust port that communicates with the filter chamber.

10. The filtration device according to claim 4, characterized in that, The backwash filtration mechanism also includes: A first drive assembly, connected to the cylindrical filter and / or the spray element, is used to drive the relative rotation between the cylindrical filter and the spray element.

11. The filtration device according to claim 10, characterized in that, The first drive component includes a motor or an impeller; The motor is used to drive the cylindrical filter element to rotate, so that the cylindrical filter element agitates the liquid in the filter chamber. The impeller is disposed in the second chamber and connected to the cylindrical filter element. Under the hydraulic pressure of the filtered liquid in the second chamber, it rotates along the circumference of the cylindrical filter element to drive the cylindrical filter element to rotate.

12. The filtration device according to claim 10, characterized in that, The bottom of the cylindrical filter element has a rotating shaft extending along the axial direction of the cylindrical filter element. The spray element includes a spray arm extending along the axial direction of the cylindrical filter element toward the bottom and a support portion extending from the spray arm along the radial direction of the cylindrical filter element toward the central axis of the cylindrical filter element. The end of the rotating shaft portion opposite to the bottom is rotatably connected to the support portion.

13. The filtration device according to claim 3, characterized in that, The spray element partially obstructs the first filter element; The filtration device further includes a first pumping assembly connected to the second outlet, which provides pumping pressure to the second chamber to create a negative pressure in the second chamber, thereby causing the liquid to be filtered to flow from the first chamber to the second chamber.

14. The filtration device according to claim 13, characterized in that, The first pumping assembly is provided with a first inlet and a first outlet. The first inlet is connected to the second outlet, and the first outlet is connected to the second inlet.

15. The filtration device according to claim 14, characterized in that, The filtration device also includes: The second housing assembly has a liquid collection chamber and is provided with a drain port and a collection port that communicate with the liquid collection chamber; wherein the drain port is connected to the first inlet and the collection port is used to collect the liquid to be filtered.

16. The filtration device according to claim 15, characterized in that, The filtration device also includes: The diversion mechanism is connected to the first outlet and the second inlet respectively. The diversion mechanism is used to divert the filtered liquid output from the second outlet of the first pumping component to the second inlet and above the collection chamber, so that part of the filtered liquid is used as the flushing fluid and the other part of the filtered liquid is used as the cleaning liquid to clean the object to be cleaned located above the collection chamber. After cleaning the object to be cleaned, the filtered liquid is collected through the collection chamber to the first inlet.

17. The filtration device according to claim 16, characterized in that, The second housing assembly also forms a slag collection chamber, and the second housing assembly is provided with a slag collection port communicating with the slag collection chamber; the slag collection port is communicating with the first outlet to collect the residue discharged from the first chamber.

18. The filtration device according to claim 17, characterized in that, The second housing assembly includes a second housing and a third housing. The second housing surrounds and forms the liquid collection chamber, and the third housing surrounds the second housing. The third housing and the second housing form the slag collection chamber. The first inlet and the first outlet are located at opposite ends on the same side of the first chamber. The second housing is provided with the drain port and the collection port; the third housing is provided with the slag collection port.

19. The filtration device according to claim 17, characterized in that, The second housing assembly includes a second housing and a third housing, wherein the second housing forms the liquid collection chamber and the third housing forms the slag collection chamber, and the second housing and the third housing are respectively located on opposite sides of the backwash filter mechanism; The second housing is provided with the drain port and the collection port; the third housing is provided with the slag collection port.

20. The filtration device according to claim 18, characterized in that, The backwash filter mechanism and the second housing assembly are arranged along a first direction, the first pumping assembly and the backwash filter mechanism are arranged along a second direction perpendicular to the first direction, and the first pumping assembly is inclined toward the second housing. The diversion mechanism is disposed between the second housing and the first pumping assembly. Wherein, the first direction is parallel to the arrangement direction of the first chamber and the second chamber.

21. The filtration device according to claim 19, characterized in that, The backwash filter mechanism, the second housing and the third housing are arranged along the first direction, and the first pumping assembly and the backwash filter mechanism are arranged along the second direction perpendicular to the first direction. Wherein, the first direction is parallel to the arrangement direction of the first chamber and the second chamber.

22. A cleaning device, characterized in that, include: The equipment body has a cleaning chamber. The filtration device according to any one of claims 1 to 21 is installed on the device body and is used to filter the liquid to be filtered generated in the cleaning chamber.

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