Residue collecting and filtering device and dishwasher

Abstract

A residue collecting and filtering device and a dishwasher. The residue collecting and filtering device comprises a filtering cavity (102) and a residue collecting cavity (103), wherein the filtering cavity (102) is used for introducing washing water and separating residues from water in the washing water, and the residue collecting cavity (103) is communicated with the filtering cavity (102) and collects the residues separated from the filtering cavity (102).

Description

Sludge collecting and filtering device and dishwasher

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411311326.6, filed on September 19, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of dishwashers, in particular to a sludge collecting and filtering device and a dishwasher. BACKGROUND

[0004] The dishwasher applies internal circulating water for jet washing, so as to reduce water consumption. During the washing process, food residues enter the water, and are filtered through the filter screen. As the food residues accumulate, the holes on the filter screen are gradually blocked by large particles, the water inlet amount of the water pump gradually decreases, the water jet intensity of the washing is affected, and the tableware cannot be washed clean. In order to ensure the washing effect of the dishwasher, the user must clean the filter screen regularly.

[0005] In the existing internal circulation system, the residues are always flushed by the circulating water, and small particles of residues can enter the cleaning water and be brought to the tableware, causing secondary pollution of the tableware. In order to ensure the washing effect of the dishwasher, the following solutions are usually used: 1) increasing the filter screen area to reduce the frequency of cleaning the filter screen; 2) using a scraper to clean the side where the residues accumulate on the filter screen.

[0006] However, increasing the filter screen area increases the cost of the filter screen; when the scraper is used for cleaning, the residues are squeezed and enter the water pump through the filter screen, causing secondary pollution, affecting the cleaning effect, affecting the performance and service life of the filter screen, and increasing the secondary pollution and affecting the cleaning effect. In addition, the residues adhere to the filter screen, and the residues are difficult to discharge.

[0007] SUMMARY

[0008] One object of the present application is to provide a sludge collecting and filtering device and a dishwasher.

[0009] The sludge collecting and filtering device according to the embodiments of the present application is used in a dishwasher, and includes a filter cavity and a sludge collecting cavity. The filter cavity is used for passing washing water and separating residues and water in the washing water. The sludge collecting cavity is communicated with the filter cavity and collects the separated residues in the filter cavity.

[0010] The sludge collecting and filtering device according to the embodiments of the present application can filter the washing water through the filter cavity and collect the sludge through the sludge collecting cavity, so as to improve the filtering effect of the sludge collecting and filtering device and facilitate the discharge of the sludge.

[0011] In addition, the slag collecting and filtering device according to the above-mentioned embodiments of the present application can further have the following additional technical features.

[0012] In some embodiments, the filtering cavity is provided with a first inlet for washing water, a first outlet for discharging separated water, and a slag outlet connected to the slag collecting cavity, the filtering cavity is provided with a first filter screen, the first inlet and the slag outlet are arranged on one side of the first filter screen, and the first outlet is arranged on the other side of the first filter screen.

[0013] In some embodiments, the slag collecting and filtering device further comprises a flushing device arranged to spray water towards the first filter screen to flush the first filter screen.

[0014] In some embodiments, the first filter screen is in a cylindrical shape, the peripheral wall of the first filter screen is used to separate residues from water in the washing water, and the flushing device comprises at least one backflushing spray arm arranged inside the first filter screen and spraying water towards the peripheral wall of the first filter screen.

[0015] In some embodiments, the first filter screen is rotatably arranged in the filtering cavity, wherein the first filter screen is arranged to be freely rotatable; or the slag collecting and filtering device further comprises a driving member in transmission connection with the first filter screen, and the driving member is used to drive the first filter screen to rotate.

[0016] In some embodiments, the slag collecting and filtering device further comprises a first flow disturbing member connected to the lower end of the first filter screen and comprising a plurality of first blades distributed along the circumference of the first filter screen; and / or the upper end of the filtering cavity is provided with an opening and a filtering cavity cover is arranged to open and close the filtering cavity, and the first filter screen is connected to the filtering cavity cover.

[0017] In some embodiments, the slag collecting cavity is provided with a second inlet connected to the filtering cavity, a second outlet for discharging water, and a slag discharge port for discharging slag, the slag collecting cavity is provided with a second filter screen, the second inlet and the slag discharge port are arranged on one side of the second filter screen, and the second outlet is arranged on the other side of the second filter screen.

[0018] In some embodiments, the second filter screen is rotatably arranged in the slag collecting cavity, wherein the second filter screen is arranged to be freely rotatable; or the slag collecting and filtering device further comprises a driving member in transmission connection with the second filter screen, and the driving member is used to drive the second filter screen to rotate.

[0019] In some embodiments, the slag collecting and filtering device further comprises a second turbulence member connected to the lower end of the second filter screen and comprising a plurality of second blades spaced along the circumference of the second filter screen; and / or the upper end of the slag collecting cavity is provided with an opening and a slag collecting cavity cover for opening and closing the slag collecting cavity, the second filter screen is connected to the slag collecting cavity cover; and / or the second inlet is higher than the inner bottom surface of the filtering cavity.

[0020] In some embodiments, the slag discharging port is provided with a one-way valve configured to be opened in one direction along the slag discharging direction of the slag collecting cavity; and / or the slag collecting cavity is closed at all positions except the second inlet and the second outlet during filtering of the slag collecting and filtering device.

[0021] In some embodiments, the filtering cavity is provided with a vent hole communicating with the external space of the slag collecting and filtering device for balancing the internal and external air pressure of the filtering cavity; and / or the filtering cavity and the slag collecting cavity are arranged side by side.

[0022] In some embodiments, the slag collecting and filtering device comprises a water cup, and the filtering cavity and the slag collecting cavity are arranged in the water cup.

[0023] In some embodiments, the water cup comprises a cup body and a flow channel plate, the filtering cavity and the slag collecting cavity are arranged in the cup body and extend in the up-down direction, the flow channel plate is connected to the lower end of the cup body, the flow channel plate is provided with a first outlet, a second outlet and a pump flow channel, the first outlet communicates with the filtering cavity, the second outlet communicates with the slag collecting cavity, and the pump flow channel communicates with the first outlet and the second outlet, and the pump flow channel is used for connecting a circulating pump of a dishwasher.

[0024] The dishwasher according to the embodiments of the present application comprises the slag collecting and filtering device described above. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a schematic view of a slag collecting and filtering device according to an embodiment of the present application.

[0026] FIG. 2 is a schematic view of a slag collecting and filtering device according to an embodiment of the present application.

[0027] FIG. 3 is a sectional view of a slag collecting and filtering device according to an embodiment of the present application.

[0028] FIG. 4 is a sectional view of a slag collecting and filtering device according to an embodiment of the present application.

[0029] FIG. 5 is a sectional view of a slag collecting and filtering device according to an embodiment of the present application.

[0030] FIG. 6 is a sectional view of a slag collecting and filtering device according to an embodiment of the present application.

[0031] Fig. 7 is a schematic view of a slag collecting and filtering device according to an embodiment of the present application.

[0032] Fig. 8 is an exploded schematic view of a slag collecting and filtering device according to an embodiment of the present application.

[0033] Fig. 9 is an exploded schematic view of a slag collecting and filtering device according to an embodiment of the present application.

[0034] Fig. 10 is a schematic view of a water cup of a slag collecting and filtering device according to an embodiment of the present application.

[0035] Reference signs: 10, slag collecting and filtering device; 101, water collecting cavity; 161, flat filter screen; 162, filter cup; 102, filtering cavity; 1021, first inlet; 1022, first outlet; 1023, air vent; 163, first filter screen; 1631, first flow disturbing member; 1632, filtering cavity cover; 1633, first sealing ring; 103, slag collecting cavity; 1031, second inlet; 1032, second outlet; 1033, slag discharging port; 164, second filter screen; 1641, second flow disturbing member; 1642, slag collecting cavity cover; 1643, second sealing ring; 17, one-way valve; 104, water discharging cavity; 11, water cup; 111, cup body; 1111, water distributing valve; 112, flow channel plate; 1121, pump flow channel; 1122, back flushing flow channel; 1123, transmission cavity; 1124, flushing device; 12, circulating pump; 13, water discharging pump; 14, driving member; 15, transmission assembly; 151, first gear; 152, second gear; 153, third gear; 154, first shaft; 155, second shaft. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and letters throughout the figures denote the same or like elements or elements having the same or similar functionality. The embodiments described below are exemplary and intended to provide an explanation of the present application and are not intended to restrict the application.

[0037] As shown in Figs. 1-10, the present application provides a slag collecting and filtering device 10, which can be used in a dishwasher. The slag collecting and filtering device 10 includes a filtering cavity 102 for passing in washing water and separating residues and water in the washing water, and a slag collecting cavity 103 connected to the filtering cavity 102 and collecting the residues separated by the filtering cavity 102.

[0038] Specifically, during the operation of the dishwasher, the circulating pump 12 can drive the washing water to flow from the residue collecting and filtering device 10 to the components such as the spray arm for cleaning the tableware, and the tableware is cleaned by the washing water; then the washing water flows into the filtering cavity 102, and the washing water in the filtering cavity 102 is subjected to residue-water separation; most of the separated water flows into the circulating pump 12 and is pumped to the components such as the spray arm for cleaning the tableware by the circulating pump 12, and the separated residue flows into the residue collecting cavity 103.

[0039] According to the residue collecting and filtering device 10 of the embodiment of the present application, the washing water can be filtered by the filtering cavity 102, and the residue can be collected by the residue collecting cavity 103, and the residue can be stored in the residue collecting cavity 103, so that the residue can be collected during the washing process, and the residue stored in the filtering cavity 102 does not affect the residue-water separation of the washing water in the filtering cavity 102, thereby improving the filtering effect of the residue collecting and filtering device 10. In addition, after the residue is collected by the residue collecting cavity 103, the residue can be discharged by manual or automatic mode, and since the residue is relatively concentrated, the residue can be conveniently discharged.

[0040] As shown in FIG. 3 and FIG. 10, in some embodiments, the filtering cavity 102 is provided with a first inlet 1021, a first outlet 1022 and a residue outlet, the first inlet 1021 is used for introducing the washing water, the first outlet 1022 is used for discharging the separated water, and the residue outlet is communicated with the residue collecting cavity 103. The filtering cavity 102 is provided with a first filter screen 163, the first inlet 1021 and the residue outlet are arranged on one side of the first filter screen 163, and the first outlet 1022 is arranged on the other side of the first filter screen 163. Specifically, the washing water enters the filtering cavity 102 through the first inlet 1021, the water in the washing water flows to the first outlet 1022 through the first filter screen 163, and is finally pumped for cleaning the tableware. The residue in the washing water is sent out of the filtering cavity 102 through the residue outlet and flows to the residue collecting cavity 103, so that the residue is separated by the residue collecting cavity 103. The residue-water separation of the filtering cavity 102 can be facilitated, the filtering efficiency and filtering effect of the filtering cavity 102 can be improved, and the first filter screen 163 can be prevented from being blocked, thereby improving the stability of the residue collecting and filtering device 10. Of course, the first filter screen 163 in the present application can also be arranged outside the filtering cavity 102.

[0041] As shown in FIG. 3 and FIG. 10, in some examples, the residue collecting and filtering device 10 further comprises a flushing device 1124 arranged to spray water towards the first filter screen 163 to flush the first filter screen 163. By the flushing device 1124, the surface of the first filter screen 163 can be cleaned to maintain the filtering performance of the first filter screen 163.

[0042] Optionally, the flushing device 1124 can be arranged downstream of the first filter screen 163 and spray water towards the first filter screen 163. Thus, the reverse flushing of the first filter screen 163 can be realized to improve the cleaning effect of the first filter screen 163. Of course, the flushing device 1124 can also be arranged upstream of the first filter screen 163 and spray water towards the first filter screen 163, which can also realize the cleaning of the first filter screen 163.

[0043] Further, as shown in FIG. 3 and FIG. 10, the first filter screen 163 is arranged in a cylindrical shape, and the peripheral wall of the first filter screen 163 is used to separate the residue and water in the washing water. The inner side space of the first filter screen 163 is communicated with the first outlet 1022, and the outer side space of the first filter screen 163 is communicated with the first inlet 1021 and the residue outlet. The flushing device 1124 includes at least one backflushing spray arm arranged in the inner side of the first filter screen 163 and spraying water towards the peripheral wall of the first filter screen 163. When the first filter screen 163 is filtering, the washing water can flow from the outer side space of the first filter screen 163 to the inner side space of the first filter screen 163 and be filtered by the peripheral wall of the first filter screen 163. The outer side space of the first filter screen 163 is configured as the upstream of the first filter screen 163, and the inner side space of the first filter screen 163 is configured as the downstream of the first filter screen 163. Optionally, the flushing device 1124 includes at least one backflushing spray arm arranged in the inner side of the first filter screen 163 and spraying water towards the peripheral wall of the first filter screen 163. The backflushing spray arm can be used to realize the rapid cleaning of the first filter screen 163, and improve the cleaning efficiency and effect of the filter screen.

[0044] Optionally, the backflushing spray arm is arranged to extend along the axis direction of the first filter screen 163 and deviate from the central axis of the first filter screen 163, so that the spray opening of the backflushing spray arm can be close to the peripheral wall of the first filter screen 163, and the impact force and flushing effect of the water flow on the first filter screen 163 can be improved. The spray range of the spray opening of the at least one backflushing spray arm covers the first filter screen 163 along the axis direction of the first filter screen 163, that is, the flushing area of the backflushing spray arm can cover the entire first filter screen 163 along the axis direction, so that the flushing range of the first filter screen 163 can be improved to realize effective flushing. In addition, the first filter screen 163 of the present application can be arranged to be rotatable, so that the flushing and cleaning of the entire first filter screen 163 can be realized by the backflushing spray arm during the flushing process.

[0045] Optionally, the backflushing spray arm can include a plurality of backflushing spray arms, and the plurality of backflushing spray arms can be distributed along the circumference of the first filter screen 163. Thus, the spray openings of the plurality of backflushing spray arms can cover the filtering area of the first filter screen 163, and the arrangement density of the spray openings of the backflushing spray arm can be reduced, so that the structural strength of the backflushing spray arm can be improved, and the impact force of the spray opening can be improved.

[0046] In some embodiments, the flushing device 1124 is connected to the outlet of the circulating pump 12, the water used for flushing can be delivered to the flushing device 1124 by the circulating pump 12, the backwashing of the first filter screen 163 can be achieved by the pumping action of the circulating pump 12, the structure of the slag collecting and filtering device 10 can be simplified, and the backwashing of the first filter screen 163 can be achieved simultaneously during the process of washing dishes in the dishwasher, thereby improving the filtering efficiency and effect of the slag collecting and filtering device 10.

[0047] Optionally, the slag collecting and filtering device 10 is provided with a water distribution valve 1111 for connecting a spray arm, the outlet of the circulating pump 12 is connected to the water distribution valve 1111, the circulating pump 12 is connected with a flushing branch, one end of the flushing branch is connected to the outlet, and the other end is connected to the flushing device 1124. The structure of the slag collecting and filtering device 10 can be further simplified, and the cleaning efficiency and effect of the first filter screen 163 can be improved.

[0048] In some embodiments of the present application, the first filter screen 163 is rotatably arranged in the filtering cavity 102. The rotation of the first filter screen 163 can be used to clean the surface of the filter screen to maintain the filtering performance of the first filter screen 163. In addition, in combination with the aforementioned flushing device 1124, the rotation of the first filter screen 163 can cover the first filter screen 163 along the axis direction of the first filter screen 163, and the rotation of the first filter screen 163 can achieve comprehensive flushing of the first filter screen 163, thereby improving the efficiency and effect of cleaning the surface of the first filter screen 163. In addition, the centrifugal force during the rotation of the first filter screen 163 can separate the residues attached to the surface from the first filter screen 163; the relative movement between the first filter screen 163 and the water can also separate the residues attached to the surface from the first filter screen 163.

[0049] In some examples, the first filter screen 163 can be arranged to rotate freely. That is, the first filter screen 163 can be arranged to rotate under the driving action of the water flow, and the structure of the slag collecting and filtering device 10 can be simplified, and the surface cleaning of the first filter screen 163 can be conveniently achieved during the filtering process.

[0050] In other examples, as shown in FIGS. 1-10, the slag collecting and filtering device 10 further comprises a driving member 14, the driving member 14 is drivingly connected to the first filter screen 163, and the driving member 14 is used to drive the first filter screen 163 to rotate. That is, the first filter screen 163 can be driven to rotate by the driving member 14, and passive rotation of the first filter screen 163 can be achieved to further improve the surface cleanliness of the first filter screen 163 and improve the filtering effect of the first filter screen 163.

[0051] Optionally, the driving member 14 is arranged side by side outside the filtering cavity 102, and the slag collecting and filtering device 10 further comprises a transmission assembly 15, which is in transmission connection with the driving member 14 and the first filter screen 163 respectively, and is used for transmitting the rotary motion of the driving shaft of the driving member 14 to the first filter screen 163. The arrangement of components of the slag collecting and filtering device 10 can be optimized, the size of the slag collecting and filtering device 10 in the up-down direction can be reduced, and the space utilization of the slag collecting and filtering device 10 can be improved.

[0052] As shown in FIG. 3 and FIG. 7, the transmission assembly 15 can comprise a first gear 151 and a second gear 152, the first gear 151 is in transmission connection with the driving member 14, the second gear 152 is in transmission connection with the first gear 151, and the second gear 152 is in transmission connection with the first filter screen 163.

[0053] The transmission assembly 15 can further comprise a first shaft 154, the upper end of the first filter screen 163 is provided with a first mounting hole, the upper end of the first shaft 154 is arranged through the first mounting hole, and the first shaft 154 and the first mounting hole can be in key connection or the like, so as to drive the first filter screen 163 to rotate by using the first shaft 154, and the lower end of the first shaft 154 is connected with the second gear 152. The lower end of the first shaft 154 is arranged through the bottom wall of the filtering cavity 102 and is provided with a bearing and an oil seal.

[0054] In some embodiments, the slag collecting and filtering device 10 further comprises a first flow disturbing member 1631, which is arranged in the filtering cavity 102 and is used for agitating the washing water in the filtering cavity 102. The first flow disturbing member 1631 can be used to promote the flow disturbance in the filtering cavity 102, further avoid the first filter screen 163 from being blocked, and facilitate the flow of the residue into the slag collecting cavity 103, so as to facilitate the collection of the residue.

[0055] The first flow disturbing member 1631 of the present application can have the following embodiments, but is not limited to them and their combinations.

[0056] In the first embodiment, the first flow disturbing member 1631 is rotatably arranged in the filtering cavity 102, and the first flow disturbing member 1631 can realize the flow disturbance of the fluid in the filtering cavity 102 by rotating.

[0057] In the second embodiment, the first flow disturbing member 1631 includes a plurality of blades distributed along the circumferential direction, which can improve the flow disturbing effect on the fluid in the filtering cavity 102. The first flow disturbing member 1631 can be arranged to rotate around the circumferential axis, so that the plurality of blades can disturb the fluid in the filtering cavity 102 during the rotation of the first flow disturbing member 1631. Alternatively, the filtering cavity 102 is provided with a rotatable first filter screen 163, and the first filter screen 163 is provided with blades at the end thereof, which can agitate the residue and water mixture in the filtering cavity 102, and facilitate the discharge of the residue.

[0058] In the third embodiment, the first flow disturbing member 1631 is relatively static with the first filter screen 163. When the first filter screen 163 rotates, the first flow disturbing member 1631 can be driven to rotate, so that the driving structure of the first flow disturbing member 1631 can be simplified. Specifically, the first flow disturbing member 1631 can be connected to the lower end of the first filter screen 163, and includes a plurality of first blades distributed along the circumferential direction of the first filter screen 163.

[0059] In the fourth embodiment, the first flow disturbing member 1631 can also be arranged to be relatively static with the filtering cavity 102, so that the water flow passing through the first flow disturbing member 1631 can generate vortex flow, and the vortex flow can disturb the water flow.

[0060] In the fifth embodiment, at least a portion of the first flow disturbing member 1631 is located in the lower portion of the filtering cavity 102. The flow disturbing effect on the fluid in the filtering cavity 102 can be improved.

[0061] In the sixth embodiment, the first flow disturbing member 1631 is connected to the lower end of the first filter screen 163, and is distributed along the direction around the first filter screen 163.

[0062] In some embodiments, the first filter screen 163 is arranged in a cylindrical shape, and the peripheral wall of the first filter screen 163 is used for filtering the washing water. The filtering area of the first filter screen 163 can be increased, so that a larger flow of water can be filtered, and the washing efficiency of the dishwasher can be ensured. In combination with the aforementioned first filter screen 163, the first filter screen 163 is arranged to be rotatable around the axis of the first filter screen 163 in the filtering cavity 102, and the internal space of the first filter screen 163 is opposite to the first outlet 1022.

[0063] Alternatively, the filtering cavity 102 is provided with a vent hole, and the vent hole is connected to the external space of the residue collecting and filtering device 10, and is used for balancing the internal and external air pressures of the filtering cavity 102. The vent hole can be arranged at the upper end of the peripheral wall of the filtering cavity 102. The washing water can be conveniently discharged into the filtering cavity 102, and the washing water can be filtered by the residue collecting and filtering device 10, so that the filtering efficiency and effect can be effectively improved.

[0064] In some embodiments, the first filter screen 163 has a screen aperture of not less than 0.1 mm and not more than 1 mm. When the first filter screen 163 is rotatable and has a high rotation speed (e.g., greater than 1000 rpm), the screen aperture of the first filter screen 163 can be appropriately enlarged. Alternatively, the first filter screen 163 has a screen aperture of not less than 0.6 mm and not more than 1 mm. For example, the first filter screen 163 can have a screen aperture of 0.1 mm, 0.2 mm, 0.35 mm, 0.5 mm, 0.6 mm, 0.75 mm or 1 mm, etc. Of course, when the rotation speed of the first filter screen 163 is low (e.g., not more than 1000 rpm), the screen aperture of the first filter screen 163 can be appropriately reduced.

[0065] In some embodiments, as shown in FIGS. 1-10, the upper end of the filter cavity 102 is provided with an opening and a filter cavity cover 1632 for opening and closing the filter cavity 102, and the first filter screen 163 is connected to the filter cavity cover 1632. Thus, the assembly and maintenance of the centrifugal assembly can be facilitated, and the assembly efficiency of the centrifugal assembly can be improved. Rapid assembly of the filter cavity cover 1632 can be achieved. Alternatively, the filter cavity cover 1632 is detachably connected to the filter cavity 102. The filter cavity cover 1632 can be quickly disassembled and assembled, the stability of the centrifugal assembly can be improved, and the state inside the filter cavity 102 can be easily observed, so as to facilitate cleaning of the centrifugal assembly.

[0066] Alternatively, the filter cavity cover 1632 is provided with a first groove portion, and a first sealing ring 1633 is arranged along the circumference of the filter cavity cover 1632 and fitted in the first groove portion. The first sealing ring 1633 seals the gap between the filter cavity cover 1632 and the inner circumference of the filter cavity 102. In addition, the filter cavity cover 1632 is further provided with a bearing, and the upper end of the first filter screen 163 is connected to the bearing. The bearing is used to realize the rotational connection between the first filter screen 163 and the filter cavity cover 1632. The upper end of the first filter screen 163 is rotatably connected to the filter cavity cover 1632.

[0067] In some embodiments, the slag collecting cavity 103 is provided with a second inlet 1031, a second outlet 1032 and a slag outlet 1033, the second inlet 1031 is connected to the filtering cavity 102, the second outlet 1032 is used for discharging water, and the slag outlet 1033 is used for discharging slag. The second inlet 1031 can be the same as the slag outlet mentioned above. The slag collecting cavity 103 is provided with a second filter screen 164, the second inlet 1031 and the slag outlet 1033 are arranged on one side of the second filter screen 164, and the second outlet 1032 is arranged on the other side of the second filter screen 164. Specifically, the slag and part of the water separated by the filtering cavity 102 are introduced into the slag collecting cavity 103 through the second inlet 1031. Under the filtering effect of the second filter screen 164, the water is discharged from the second outlet 1032 and sent to the component for washing the tableware under the driving effect of the circulating pump 12. The remaining slag after filtering is stored in the slag collecting cavity 103 and can be discharged through the slag outlet 1033. The slag collecting cavity 103 can separate the water and the slag introduced into the slag collecting cavity 103, so part of the water in the filtering cavity 102 can be introduced into the slag collecting cavity 103, so that the slag in the filtering cavity 102 can be brought into the slag collecting cavity 103 by the water flow, so as to facilitate the slag collecting cavity 103 to collect the slag. In addition, the water introduced into the slag collecting cavity 103 is discharged after filtering, which can avoid the backflow of the slag-water mixture in the slag collecting cavity 103 to the filtering cavity 102. Of course, the second filter screen 164 in the present application can also be arranged outside the slag collecting cavity 103.

[0068] In some embodiments, the second filter screen 164 is rotatably arranged in the slag collecting cavity 103. The rotation of the second filter screen 164 can be used to clean the surface of the filter screen, so as to maintain the filtering performance of the second filter screen 164. In the rotation process of the second filter screen 164, the centrifugal force can separate the slag attached to the surface from the second filter screen 164. The relative movement between the second filter screen 164 and the water can also separate the slag attached to the surface from the second filter screen 164.

[0069] In some examples, the second filter screen 164 can be arranged to rotate freely. That is, the second filter screen 164 can be arranged to rotate under the driving effect of the water flow, which can simplify the structure of the slag collecting and filtering device 10 and facilitate the surface cleaning of the second filter screen 164 during the filtering process.

[0070] In other examples, as shown in FIGS. 4 and 7, the slag collecting and filtering device 10 can further include a driving member 14, the driving member 14 is drivingly connected to the second filter screen 164, and the driving member 14 is used to drive the second filter screen 164 to rotate. That is, the driving member 14 can be used to drive the second filter screen 164 to rotate, so as to realize the passive rotation of the second filter screen 164, so as to further improve the surface cleanliness of the second filter screen 164 and improve the filtering effect of the second filter screen 164.

[0071] Optionally, the driving member 14 is arranged side by side outside the slag collecting cavity 103, and the slag collecting and filtering device 10 further comprises a transmission assembly 15 in transmission connection with the driving member 14 and the second filter screen 164 respectively, for transmitting the rotary motion of the driving shaft of the driving member 14 to the second filter screen 164. The arrangement of components of the slag collecting and filtering device 10 can be optimized, the size of the slag collecting and filtering device 10 in the up-down direction can be reduced, and the space utilization of the slag collecting and filtering device 10 can be improved.

[0072] In the above embodiment, the transmission assembly 15 can comprise a first gear 151 in transmission connection with the driving member 14, and a third gear 153 in transmission connection with the second filter screen 164. Alternatively, the transmission assembly 15 can comprise a first gear 151 in transmission connection with the driving member 14, a second gear 152 in transmission connection with the first filter screen 163, and a third gear 153 in transmission connection with the second filter screen 164.

[0073] The transmission assembly 15 can further comprise a second shaft 155, the upper end of the second filter screen 164 is provided with a second mounting hole, the upper end of the second shaft 155 is arranged through the second mounting hole, and the second shaft 155 and the second mounting hole can be in key connection or the like, so as to drive the second filter screen 164 to rotate by the second shaft 155, and the lower end of the second shaft 155 is connected with the third gear 153. The lower end of the second shaft 155 is arranged through the bottom wall of the slag collecting cavity 103 and is provided with a bearing and an oil seal.

[0074] In some embodiments, the slag collecting and filtering device 10 further comprises a second flow disturbing member 1641 arranged in the slag collecting cavity 103, for agitating the water and residue in the slag collecting cavity 103. The second flow disturbing member 1641 can be used to promote the flow disturbance in the slag collecting cavity 103, facilitate the collection of residue, and when the slag collecting cavity 103 is drained, the second flow disturbing member 1641 can be used to disturb the flow in the slag collecting cavity 103, so as to facilitate the emptying of residue in the slag collecting cavity 103, facilitate the cleaning of the dishwasher, avoid bacterial growth, and improve the cleaning effect and safety of the dishwasher.

[0075] The second flow disturbing member 1641 of the present application can have the following embodiments, but is not limited to them and their combinations.

[0076] In the first embodiment, the second flow disturbing member 1641 is rotatably arranged in the slag collecting cavity 103, and the second flow disturbing member 1641 can disturb the flow in the slag collecting cavity 103 by rotating.

[0077] In the second embodiment, the second flow disturbing member 1641 comprises a plurality of blades distributed along the circumferential direction, which can improve the flow disturbing effect on the fluid in the slag collecting cavity 103. Further, the second flow disturbing member 1641 can be arranged to rotate around the circumferential axis, so that the plurality of blades can disturb the fluid in the slag collecting cavity 103 during the rotation of the second flow disturbing member 1641. Alternatively, the slag collecting cavity 103 is provided with a rotatable second filter screen 164, and the second filter screen 164 is provided with blades at the end thereof, which can agitate the slag and water mixture in the slag collecting cavity 103 and facilitate the discharge of the residue.

[0078] In the third embodiment, the second flow disturbing member 1641 is relatively static with respect to the second filter screen 164. When the second filter screen 164 rotates, the second flow disturbing member 1641 can be driven to rotate, so that the driving structure of the second flow disturbing member 1641 can be simplified. Alternatively, the second flow disturbing member 1641 is connected to the lower end of the second filter screen 164 and comprises a plurality of second blades distributed along the circumferential direction of the second filter screen 164.

[0079] In the fourth embodiment, the second flow disturbing member 1641 can also be arranged to be relatively static with respect to the slag collecting cavity 103, so that vortexes can be generated when the water flows through the second flow disturbing member 1641, and the vortexes can be used to disturb the water flow.

[0080] In the fifth embodiment, at least a portion of the second flow disturbing member 1641 is located in the lower portion of the slag collecting cavity 103. The flow disturbing effect on the fluid in the slag collecting cavity 103 can be improved.

[0081] In the sixth embodiment, the second flow disturbing member 1641 is connected to the lower end of the second filter screen 164 and is distributed along the circumferential direction of the second filter screen 164.

[0082] In some embodiments, the second filter screen 164 is arranged in a cylindrical shape, the circumferential wall of the second filter screen 164 is used for filtering, the inner space of the second filter screen 164 is connected to the second outlet 1032, and the outer space of the second filter screen 164 is connected to the second inlet 1031 and the residue discharge port 1033. The filtering area of the second filter screen 164 can be increased, so that a larger flow rate of filtering can be achieved to ensure the washing efficiency of the dishwasher. In combination with the aforementioned second filter screen 164, the second filter screen 164 is arranged to be rotatable around the axis of the second filter screen 164 in the slag collecting cavity 103, and the inner space of the second filter screen 164 is opposite to the second outlet 1032.

[0083] Optionally, the second inlet 1031 is higher than the inner bottom surface of the filtering cavity 102, so that the fluid in the filtering cavity 102 can not flow into the slag collecting cavity 103 without resistance, most of the washing water can be filtered in the filtering cavity 102, the amount of washing water flowing into the slag collecting cavity 103 is small, the impact on the residue in the slag collecting cavity 103 is reduced, and in addition, the residue in the slag collecting cavity 103 can be prevented from flowing back. In addition, the slag collecting cavity 103 is closed except the second inlet 1031 and the second outlet 1032 during the filtering of the slag collecting filtering device 10, so that a relatively high pressure environment can be formed in the slag collecting cavity 103, the amount of water flowing into the slag collecting cavity 103 is reduced, the residue can be stored in the slag collecting cavity 103, and the filtering efficiency and effect of the slag collecting filtering device 10 are improved.

[0084] In some embodiments, the second filter screen 164 has a screen aperture of not less than 0.1 mm and not more than 1 mm. When the second filter screen 164 rotates at a high speed (for example, greater than 1000 rpm), the screen aperture of the second filter screen 164 can be appropriately enlarged. Optionally, the second filter screen 164 has a screen aperture of not less than 0.6 mm and not more than 1 mm. For example, the screen aperture of the second filter screen 164 can be 0.1 mm, 0.2 mm, 0.35 mm, 0.5 mm, 0.6 mm, 0.75 mm or 1 mm, etc. Of course, when the second filter screen 164 rotates at a low speed (for example, not greater than 1000 rpm), the screen aperture of the second filter screen 164 can be appropriately reduced.

[0085] In some embodiments, the inner bottom surface of the slag collecting cavity 103 is a slope that gradually inclines downward in the direction from the filtering cavity 102 to the residue discharging port 1033, so that the residue or water, etc. entering the slag collecting cavity 103 flows toward the residue discharging port 1033, so that the residue can be smoothly discharged from the residue discharging port 1033, and bacteria breeding caused by residue remaining in the slag collecting cavity 103 is avoided. Optionally, the lower end of the second filter screen 164 is higher than the inner bottom surface of the slag collecting cavity 103, so that the residue remaining in the slag collecting cavity 103 can not adhere to the surface of the second filter screen 164, and the filtering performance of the second filter screen 164 is improved. Optionally, the inner bottom surface of the slag collecting cavity 103 is provided with a boss, the second outlet 1032 is arranged on the top surface of the boss, and the second filter screen 164 is arranged on the boss. The filtering performance of the second filter screen 164 is improved, and the boss can provide support for the second filter screen 164 to maintain the stability of the second filter screen 164.

[0086] In some embodiments, the slag outlet 1033 is provided with a one-way valve 17 configured to open the slag outlet 1033 in a one-way direction along the slag collection cavity 103. In addition, the slag outlet 1033 can be connected to the drainage pump 13. During the filtration process, the drainage pump 13 is closed, the air pressure at the inlet of the drainage pump 13 is relatively high, and the air pressure in the slag collection cavity 103 is relatively low, so the one-way valve 17 is closed. During the slag discharge process, the drainage pump 13 is running, the air pressure at the inlet of the drainage pump 13 is relatively low, and the air pressure in the slag collection cavity 103 is relatively high, so the one-way valve 17 is opened to facilitate the discharge of the residue in the slag collection cavity 103.

[0087] The aforementioned one-way valve 17 can include a cover plate, a rubber cap, a support, and a sealing ring, etc., and mainly realizes the opening and closing functions of the slag outlet 1033. The support can be used as a support and is assembled with the slag outlet 1033 and sealed by the sealing ring. The support can be provided with an opening, the rubber cap can be connected with the support and is arranged to be rotatable for opening and closing the opening. The part of the rubber cap opposite to the opening is provided with a cover plate for providing support for the rubber cap to improve the sealing effect when the rubber cap closes the opening. The one-way valve 17 is used to realize the opening and closing of the slag outlet 1033.

[0088] In some embodiments, as shown in FIG. 10, the upper end of the slag collection cavity 103 is provided with an opening, and the upper end of the slag collection cavity 103 is provided with a slag collection cavity cover 1642 for opening and closing the slag collection cavity 103. Thus, the assembly and maintenance of the slag collection and filtration device 10 can be facilitated, and the assembly efficiency of the slag collection and filtration device 10 can be improved.

[0089] The second filter screen 164 is connected with the slag collection cavity cover 1642, and the quick assembly of the slag collection cavity cover 1642 and the second filter screen 164 can be realized. Alternatively, the slag collection cavity cover 1642 is detachably connected with the slag collection cavity 103. The slag collection cavity cover 1642 can be quickly disassembled, the stability of the slag collection and filtration device 10 can be improved, and the state in the slag collection cavity 103 can be easily observed to facilitate the cleaning of the slag collection and filtration device 10.

[0090] Alternatively, the peripheral surface of the slag collection cavity cover 1642 is provided with a second groove portion, and a second sealing ring 1643 is arranged along the circumference of the slag collection cavity cover 1642 and cooperates with the groove portion. The second sealing ring 1643 seals the gap between the inner peripheral surface of the slag collection cavity cover 1642 and the slag collection cavity 103. In addition, the slag collection cavity cover 1642 is also provided with a bearing, and the upper end of the second filter screen 164 is connected with the bearing to realize the rotational connection between the second filter screen 164 and the slag collection cavity cover 1642. The upper end of the second filter screen 164 is rotatably connected with the slag collection cavity cover 1642, and the lower end of the second filter screen 164 is rotatably connected with the bottom wall of the slag collection cavity 103. The upper end of the second filter screen 164 is rotatably connected with the slag collection cavity cover 1642.

[0091] Optionally, the filtering cavity 102 and the slag collecting cavity 103 are arranged side by side. The filtering and slag collecting can be facilitated, and the structure of the slag filtering device 10 can be simplified, and the filtering effect and efficiency of the slag filtering device 10 can be improved.

[0092] In some embodiments, the slag filtering device 10 comprises a water cup 11, and the filtering cavity 102 and the slag collecting cavity 103 are arranged in the water cup 11. The integration of the slag filtering device 10 can be improved, the slag filtering device 10 can be simplified, and the stability of the dishwasher can be improved. Of course, the filtering cavity 102 and the slag collecting cavity 103 in the present application can also be arranged in a split structure.

[0093] Optionally, the water cup 11 comprises a cup body 111 and a flow channel plate 112, the filtering cavity 102 and the slag collecting cavity 103 are arranged in the cup body 111 and extend in the up-down direction, the flow channel plate 112 is connected to the lower end of the cup body 111, the flow channel plate 112 is provided with a first outlet 1022, a second outlet 1032 and a pump flow channel 1121, the first outlet 1022 is connected to the filtering cavity 102, the second outlet 1032 is connected to the slag collecting cavity 103, the pump flow channel 1121 is connected to the first outlet 1022 and the second outlet 1032, and the pump flow channel 1121 is used to connect the circulating pump 12 of the dishwasher. The first outlet 1022 can be the first outlet 1022 of the filtering cavity 102 described above, and the second outlet 1032 can be the second outlet 1032 of the slag collecting cavity 103 described above. In use, the pump flow channel 1121 is connected to the circulating pump 12, and the circulating pump 12 can form a negative pressure downstream of the first filter screen 163 and downstream of the second filter screen 164, so that the washing water can flow to the pump flow channel 1121, facilitating the use of the slag filtering device 10.

[0094] In addition, the flow channel plate 112 can serve as the bottom wall of the filtering cavity 102 and the slag collecting cavity 103, and be used to position the first filter screen 163 and the second filter screen 164. In addition, the flow channel plate 112 is further provided with a flushing flow channel, the flushing flow channel is connected to a flushing device 1124 and is used to connect the circulating pump 12. The flow channel plate 112 is further provided with a gear cavity, and the transmission assembly 15 described above is arranged in the gear cavity. Specifically, the first gear 151, the second gear 152 and the third gear 153 described above are arranged in the gear cavity.

[0095] The water cup 11 can comprise the filtering cavity 102, the slag collecting cavity 103, a drainage cavity 104 and a flow dividing cavity, etc. The water cup 11 mainly realizes the functions of water collection, backflushing, slag collecting, nozzle flow channel switching, drainage and slag discharging, etc.

[0096] In some embodiments, the slag collecting assembly further comprises: a flat filter screen 161, the flat filter screen 161 having openings, and the flat filter screen 161 being arranged to be inclined downward from the periphery to the openings; and a filter cup 162, the filter cup 162 being arranged in the openings. The flat filter screen 161 can be used to perform a first filtration on the washing water, further improving the filtration effect on the washing water, and the filter cup 162 can store larger residues and can be cleaned by removing the filter screen.

[0097] The filter screen (the first filter screen 163 and / or the second filter screen 164) in the present application can be arranged in a detachable structure and can be taken out from the inside of the cleaning cavity, facilitating later maintenance.

[0098] The present application also provides a dishwasher comprising the slag collecting and filtering device 10 described above.

[0099] The slag collecting and filtering device 10 of the present application can comprise a filtering cavity 102, a slag collecting cavity 103, a circulating pump 12, a drainage pump 13, a water distribution valve 1111, and the like. It has a multi-stage filtration function. The main multi-stage filtration is performed by the flat filter screen 161, the filter cup 162, the first filter screen 163, the second filter screen 164, the circulating pump 12, the driving member 14, the transmission assembly 15, and the like. In addition, the slag collecting and filtering device 10 can further comprise a water collecting cavity 101 for collecting washing water and sending the washing water to the filtering cavity 102.

[0100] Specifically, the first-stage filtration system comprises the flat filter screen 161 and the filter cup 162. During the cleaning process, after the water washes the surface of the tableware, the water carries the residues to the bottom of the cleaning cavity, flows through the flat filter screen 161, and collects. The residues smaller than the aperture size of the flat filter screen 161 (the aperture size of the flat filter screen 161 is 0.5-2 mm) enter the filtering cavity 102. The residues larger than the aperture size of the flat filter screen 161 enter the filter cup 162.

[0101] The filter cup 162 has two aperture sizes. The side aperture size of the filter cup 162 can be set to 0.5-3 mm. The bottom aperture size of the filter cup 162 can be set to 5-10 mm. The residues larger than the bottom aperture size of the filter cup 162 need to be cleaned manually. The residues smaller than the side aperture size of the filter cup 162 and larger than the bottom aperture size are discharged by the drainage pump 13 during drainage. The residues smaller than the side aperture size of the filter cup 162 enter the filtering cavity 102. The first-stage filtration realizes the filtration of residues larger than 3 mm.

[0102] The secondary filtering system is composed of the first filter screen 163 and the second filter screen 164. The first filter screen 163 and the second filter screen 164 can have the same or different aperture diameters. The water and the residue entering the filtering cavity 102 are filtered by the first filter screen 163, and the tiny particles smaller than the first filter screen 163 can pass through the filter screen and enter the circulating pump 12 with the water. The residue larger than the first filter screen 163 (with a size of 0.1-3 mm) enters the residue collecting cavity 103. When draining water, the residue in the residue collecting cavity 103 is discharged by the drainage pump 13.

[0103] The first filter screen 163 and the second filter screen 164 of the secondary filtering are driven to rotate by the driving member 14 and the transmission assembly 15. Under the action of the centrifugal force, the residue is separated from the filter screen.

[0104] In the application, the first filter screen 163 and / or the second filter screen 164 can be rotatable and utilize centrifugal separation.

[0105] Specifically, the water filtered by the primary filtering enters the filtering cavity 102, and the first filter screen 163 rotates at high speed under the driving of the driving member 14 (such as a motor). Through the high-speed rotation of the first filter screen 163, the contamination adhered to the outer surface of the first filter screen 163 is separated from the filter screen, so that the first filter screen 163 has better water permeability. The first filter screen 163 is provided with first blades, the rotation of the first blades pushes the water to flush the surface of the first filter screen 163, accelerates the separation of the residue from the filter screen, and makes the filter screen cleaning more thorough. In addition, the first inlet 1021 is arranged on the peripheral surface of the filtering cavity 102, the first outlet 1022 is arranged on the bottom surface of the filtering cavity 102, and the residue outlet is arranged on the peripheral surface of the filtering cavity 102. When the circulating pump 12 works, the water in the filtering cavity 102 is sucked into the pump cavity of the circulating pump 12. A low-pressure area is formed at the first outlet 1022, the outer side of the filter screen of the filtering cavity 102 is a relatively high-pressure area, and the position of the first inlet 1021 is a relatively high-pressure area; a low-pressure area is formed at the second outlet 1032, and the position of the second inlet 1031 is a relatively high-pressure area. Therefore, part of the water enters the second outlet 1032 through the residue collecting cavity 103. The contamination on the outer side of the first filter screen 163 is pushed to the second inlet 1031 by the water flow, and enters the residue collecting cavity 103 through the second inlet 1031. Since the water flow in the residue collecting cavity 103 is slow, and the second filter screen 164 is arranged at the second outlet 1032, the contamination is collected in the residue collecting cavity 103, the residue collecting function is realized, the contamination is separated from the circulating water, therefore, the water for cleaning tableware is always clean water, and the secondary pollution of the tableware is avoided. In addition, the application also provides a cleaning module to clean the first filter screen 163, and the first filter screen 163 is cleaned by the circulating water micro-filtration function and the centrifugal cleaning filter screen function.

[0106] In addition, during the cleaning process, the water filtered by the first filter enters the slag collection chamber 103 from the second inlet 1031 through the filter chamber 102, and the slag is collected in the slag collection chamber 103 and separated from the main circulating water, so as to realize slag-water separation. In order to solve the problem of slag blocking the second filter screen 164, a second blade is arranged at the bottom of the second filter screen 164. The second filter screen 164 is driven to rotate by the motor, and the water flow driven by the second blade scours the surface of the filter screen, so that the slag is separated from the surface of the filter screen. When draining, the second filter screen 164 rotates, and the second flow disturbing member 1641 agitates the water in the slag collection chamber 103 to make the slag move with the water, and the slag is discharged through the slag discharge port 1033 of the slag collection chamber 103. The slag collection chamber 103 can realize the functions of slag collection and slag-water separation.

[0107] The slag collection and filtration device 10 of the present application can separate the slag from the circulating water, realize clean water cleaning, avoid secondary pollution, automatically clean the filter screen through centrifugal separation, and the filter screen does not need to be maintained by people, can ensure the stability of the water pump output, improve the working efficiency of the water pump, and make the slag more easily discharged after aggregation. All filter screens can be easily taken out and maintained.

[0108] In the description of the present application, it should be understood that the 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 present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0109] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0110] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and similar terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0111] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0112] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0113] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A slag collecting filter device (10) for a dishwasher, wherein, The slag collecting and filtering device (10) comprises a filtering cavity (102) and a slag collecting cavity (103), the filtering cavity (102) is used for introducing washing water and separating residues and water in the washing water, and the slag collecting cavity (103) is communicated with the filtering cavity (102) and collects the residues separated by the filtering cavity (102).

2. The slag filtering device (10) according to claim 1, wherein The filtering cavity (102) is provided with a first inlet (1021) for introducing washing water, a first outlet (1022) for discharging separated water, and a slag outlet communicated with the slag collecting cavity (103), the filtering cavity (102) is provided with a first filter screen (163), the first inlet (1021) and the slag outlet are arranged on one side of the first filter screen (163), and the first outlet (1022) is arranged on the other side of the first filter screen (163).

3. The slag filtering device (10) according to claim 2, wherein The slag collecting and filtering device (10) further comprises a flushing device (1124) arranged to spray water towards the first filter screen (163) to flush the first filter screen (163).

4. The slag filtering device (10) according to claim 3, wherein The first filter screen (163) is in a cylindrical shape, a peripheral wall of the first filter screen (163) is used for separating residues and water in the washing water, and the flushing device (1124) comprises at least one backflushing spray arm arranged on the inner side of the first filter screen (163) and spraying water towards the peripheral wall of the first filter screen (163).

5. The slag filtering device (10) according to any one of claims 2-4, wherein The first filter screen (163) is rotatably arranged in the filtering cavity (102), The first filter screen (163) is rotatably arranged in the filtering cavity (102), 6. The slag filtering device (10) according to any one of claims 2-5, wherein The slag collecting and filtering device (10) further comprises a first flow disturbing member (1631) connected to the lower end of the first filter screen (163) and comprising a plurality of first blades distributed along the circumference of the first filter screen (163); and / or the upper end of the filtering cavity (102) is provided with an opening and a filtering cavity cover (1632) is arranged to open and close the filtering cavity (102), and the first filter screen (163) is connected to the filtering cavity cover (1632).

7. The slag filtering device (10) according to any one of claims 1-6, wherein The slag collecting and filtering device (10) further comprises a first flow disturbing member (1631) connected to the lower end of the first filter screen (163) and comprising a plurality of first blades distributed along the circumference of the first filter screen (163); and / or the upper end of the filtering cavity (102) is provided with an opening and a filtering cavity cover (1632) is arranged to open and close the filtering cavity (102), and the first filter screen (163) is connected to the filtering cavity cover (1632).

8. The slag filtering device (10) according to claim 7, wherein The slag collecting and filtering device (10) further comprises a first flow disturbing member (1631) connected to the lower end of the first filter screen (163) and comprising a plurality of first blades distributed along the circumference of the first filter screen (163); and / or the upper end of the filtering cavity (102) is provided with an opening and a filtering cavity cover (1632) is arranged to open and close the filtering cavity (102), and the first filter screen (163) is connected to the filtering cavity cover (1632). The slag collecting and filtering device (10) further comprises a first flow disturbing member (1631) connected to the lower end of the first filter screen (163) and comprising a plurality of first blades distributed along the circumference of the first filter screen (163); and / or the upper end of the filtering cavity (102) is provided with an opening and a filtering cavity cover (1632) is arranged to open and close the filtering cavity (102), and the first filter screen (163) is connected to the filtering cavity cover (1632). The second filter screen (164) is arranged to rotate freely, or the slag collecting and filtering device (10) further comprises a driving member (14) which is drivingly connected to the second filter screen (164) and used to drive the second filter screen (164) to rotate.

9. The slag filtering device (10) according to claim 7 or 8, wherein The slag collecting and filtering device (10) further comprises a second turbulence member (1641) which is connected to the lower end of the second filter screen (164) and comprises a plurality of second blades which are spaced apart along the circumference of the second filter screen (164); and / or the upper end of the slag collecting cavity (103) is provided with an opening and a slag collecting cavity cover (1642) which is used to open and close the slag collecting cavity (103), and the second filter screen (164) is connected to the slag collecting cavity cover (1642); and / or the second inlet (1031) is higher than the inner bottom surface of the filtering cavity (102).

10. The slag filtering device (10) according to any one of claims 7-9, wherein The slag discharging port (1033) is provided with a one-way valve (17) which is configured to be opened in the direction of discharging slag of the slag collecting cavity (103) in one way; and / or the slag collecting cavity (103) is closed at other positions except the second inlet (1031) and the second outlet (1032) when the slag collecting and filtering device (10) is filtering.

11. The slag filtering device (10) according to any one of claims 1-10, wherein The filtering cavity (102) is provided with a vent hole which communicates with the external space of the slag collecting and filtering device (10) and is used to balance the internal and external air pressures of the filtering cavity (102); and / or the filtering cavity (102) and the slag collecting cavity (103) are distributed side by side.

12. The slag filtering device (10) according to any one of claims 1-11, wherein The slag collecting and filtering device (10) comprises a water cup (11), and the filtering cavity (102) and the slag collecting cavity (103) are arranged in the water cup (11).

13. The slag filtering device (10) according to claim 12, wherein The water cup (11) comprises a cup body (111) and a flow channel plate (112), the filtering cavity (102) and the slag collecting cavity (103) are arranged in the cup body (111) and extend in the up-down direction, the flow channel plate (112) is connected to the lower end of the cup body (111), the flow channel plate (112) is provided with a first outlet (1022), a second outlet (1032) and a pump flow channel (1121), the first outlet (1022) communicates with the filtering cavity (102), the second outlet (1032) communicates with the slag collecting cavity (103), and the pump flow channel (1121) communicates with the first outlet (1022) and the second outlet (1032) and is used to be connected to a circulating pump (12) of a dish washing machine.

14. A dishwasher, wherein, The slag collecting and filtering device (10) according to any one of claims 1-13. The slag collecting and filtering device (10) according to any one of claims 1-13.

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