Self-cleaning filtering device and dish washing machine

Abstract

The utility model provides a self-cleaning filtering device and a dish washing machine, and relates to the technical field of cleaning devices. The self-cleaning filtering device comprises a coarse filtering cylinder, a fine filtering cylinder, a cleaning assembly and a driving assembly, wherein the coarse filtering cylinder is sleeved with the fine filtering cylinder; the cleaning assembly is arranged between the coarse filter cartridge and the fine filter cartridge, and the cleaning assembly abuts against the circumferential inner wall of the fine filter cartridge; the driving assembly is connected with the cleaning assembly and used for driving the cleaning assembly to rotate in the circumferential direction of the fine filter cartridge. According to the self-cleaning filtering device, the driving assembly drives the sweeping assembly to rotate, impurities and stains attached to the inner wall of the fine filtering cylinder can be swept, the impurities adsorbed to the fine filtering cylinder are separated, and therefore the water flow and the water pressure after filtering are effectively guaranteed, and the tableware cleaning rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, and in particular to a self-cleaning filter device and a dishwasher. Background Technology

[0002] To conserve water, existing dishwashers typically use a fixed amount of water that is repeatedly filtered before washing dishes. The dishwasher's filtration system usually includes a fine cylindrical filter and a coarse cylindrical filter installed inside the fine filter.

[0003] After the dishwasher completes a wash cycle, the cleaning water carries impurities into the coarse filter. Larger particles are trapped in the coarse filter, while smaller particles pass through the holes in the side wall of the coarse filter with the cleaning water and enter the fine filter. The smaller particles are then trapped in the fine filter, and the cleaning water passes through the fine filter and circulates back into the dishwasher's spray arms.

[0004] However, as the washing process continues, the impurities remaining in the fine filter will accumulate on the inner wall of the fine filter under the action of water pressure, causing the fine filter to become clogged. This will affect the water output and impact force at the spray arm nozzles, and may even cause the spray arm to operate abnormally, making it easy for dishes to not be cleaned. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning filter device and a dishwasher to alleviate the technical problem in the prior art where, as the dishwasher washes, impurities remaining in the fine filter screen accumulate on the inner wall of the fine filter screen under water pressure, causing the fine filter screen to become clogged. This affects the water output and impact force at the spray arm nozzles, and may even cause the spray arm to malfunction, making it easy for dishes to not be cleaned properly.

[0006] In a first aspect, the present invention provides a self-cleaning filtration device, including a coarse filter cylinder and a fine filter cylinder sleeved outside the coarse filter cylinder, and further including a cleaning component and a driving component.

[0007] The cleaning assembly is disposed between the coarse filter cylinder and the fine filter cylinder, and the cleaning assembly abuts against the circumferential inner wall of the fine filter cylinder;

[0008] The drive component is connected to the cleaning component, and the drive component is used to drive the cleaning component to rotate circumferentially along the fine filter cylinder.

[0009] In an optional embodiment, the drive component is a self-rotating spray arm assembly, and the spray arm assembly is connected to the cleaning component via a transmission component.

[0010] In an optional embodiment, the transmission assembly includes a drive gear and a transmission gear, the drive gear being fixedly connected to the spray arm assembly, the transmission gear meshing with one side of the drive gear, and the transmission gear being fixedly connected to the sweeping assembly.

[0011] In an optional embodiment, the transmission assembly further includes a transmission rod structure;

[0012] The bottom of the coarse filter cylinder is provided with a first through hole. The transmission rod structure is located inside the coarse filter cylinder, and one end of the transmission rod structure is connected to the transmission gear, while the other end passes through the first through hole and is connected to the cleaning assembly.

[0013] In an optional embodiment, the transmission rod structure includes a gear transmission rod and a cleaning transmission rod;

[0014] One end of the gear transmission rod is fixedly connected to the transmission gear, and the other end is inserted into one end of the sweeping transmission rod; the other end of the sweeping transmission rod passes through the first through hole and is fixedly connected to the sweeping assembly.

[0015] In an optional embodiment, a fixing seat is installed at the opening of the fine filter cartridge and / or the opening of the coarse filter cartridge, and the fixing seat is provided with a second through hole, through which the transmission rod structure passes.

[0016] In an optional embodiment, the fine filter cartridge and / or the coarse filter cartridge are detachably connected to the mounting base.

[0017] In an optional embodiment, a support shaft is also included, one end of which is fixed to the inner side of the bottom of the fine filter cartridge, and the other end is rotatably connected to the cleaning assembly.

[0018] In an optional implementation, the driving component is a rotary driver;

[0019] The self-cleaning filter device also includes a detection component, which is used to detect whether the spray arm assembly on one side of the self-cleaning filter device is rotating.

[0020] The rotary drive includes a switch connected to the detection component. The switch is used to receive information detected by the detection component and to open when the spray arm assembly rotates according to the information.

[0021] Secondly, this utility model provides a dishwasher, including the self-cleaning filter device described in any of the foregoing embodiments.

[0022] The self-cleaning filter device provided by this utility model includes a coarse filter cylinder, a fine filter cylinder sleeved outside the coarse filter cylinder, a cleaning component, and a driving component. The cleaning component is located between the coarse and fine filter cylinders and abuts against the circumferential inner wall of the fine filter cylinder. The driving component is connected to the cleaning component and is used to drive the cleaning component to rotate circumferentially along the fine filter cylinder. The self-cleaning filter device provided by this utility model can be used in a dishwasher. The bottom of the dishwasher's inner tub usually has a drain outlet, in which case the fine filter cylinder in the self-cleaning filter device can be installed at the drain outlet. When the dishwasher washes the dishes in the inner tub, an external water source supplies water to the spray arm in the inner tub, and then the spray nozzles on the spray arm spray water outward to wash the dishes. The washing water, carrying impurities, enters the coarse filter cylinder through the drain outlet. In the coarse filter cylinder, larger particles of impurities are intercepted, while smaller particles of impurities pass through the coarse filter cylinder with the washing water and enter the fine filter cylinder. At this point, the drive component can be activated, causing it to rotate the cleaning component around the circumference of the fine filter cylinder. Since the cleaning component abuts against the inner wall of the fine filter cylinder, the rotating cleaning component can sweep and brush the inner wall of the fine filter cylinder, effectively preventing small particles of impurities from accumulating on the inner wall of the fine filter cylinder and hindering the water filtration process. This effectively ensures the water flow area at the fine filter cylinder, prevents a decrease in the water flow rate and pressure at the fine filter cylinder, and prevents abnormal operation of the spray arm due to insufficient water supply during subsequent water circulation, thus effectively improving the dishwashing efficiency.

[0023] Compared with the prior art, the self-cleaning filter device provided by this utility model drives the cleaning component to rotate through the drive component, which can sweep and brush the impurities and stains attached to the inner wall of the fine filter cylinder, so that the impurities adsorbed on the fine filter cylinder are removed, thereby effectively ensuring the water flow and water pressure after filtration and improving the dishwashing rate.

[0024] The dishwasher provided by this utility model includes the above-mentioned self-cleaning filter device, and the dishwasher has the same beneficial effects as the above-mentioned self-cleaning filter device. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A side view of the self-cleaning filter device provided in an embodiment of this utility model;

[0027] Figure 2This is a schematic diagram of the structure of the self-cleaning filter device provided in the embodiment of this utility model;

[0028] Figure 3 A cross-sectional view of the self-cleaning filter device provided in an embodiment of this utility model;

[0029] Figure 4 An exploded view of the self-cleaning filter device provided in an embodiment of this utility model.

[0030] Icons: 1-Coarse filter cartridge; 2-Fine filter cartridge; 3-Cleaning assembly; 30-Brush rod; 31-Connecting rod; 4-Spray arm assembly; 40-Spray arm base; 5-Transmission assembly; 50-Drive gear; 51-Transmission gear; 52-Transmission rod structure; 520-Gear transmission rod; 521-Cleaning transmission rod; 6-Flat filter screen; 7-Filter tube; 8-Fixed base; 9-Support shaft. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Example:

[0035] like Figure 1-Figure 4 As shown, the self-cleaning filter device provided in this embodiment includes a coarse filter cylinder 1, a fine filter cylinder 2 sleeved outside the coarse filter cylinder 1, a cleaning component 3, and a driving component; the cleaning component 3 is disposed between the coarse filter cylinder 1 and the fine filter cylinder 2, and the cleaning component 3 abuts against the circumferential inner wall of the fine filter cylinder 2; the driving component is connected to the cleaning component 3, and the driving component is used to drive the cleaning component 3 to rotate circumferentially along the fine filter cylinder 2.

[0036] The self-cleaning filter device provided in this embodiment can be used in dishwashers, such as... Figure 2 and Figure 4 As shown, the bottom of the dishwasher's inner tub is usually equipped with a drain outlet, and the fine filter cartridge 2 in the self-cleaning filter device can be installed at the drain outlet.

[0037] When the dishwasher washes the dishes in the inner drum, an external water source supplies water to the spray arms inside the drum. The spray arms then spray water outwards from the nozzles, washing the dishes. The rinse water, carrying impurities, enters the coarse filter 1 through the drain. In the coarse filter 1, larger particles are intercepted, while smaller particles pass through with the rinse water and enter the fine filter 2. At this point, the drive assembly is activated, causing the cleaning assembly 3 to rotate circumferentially around the fine filter 2. Because the cleaning assembly 3 abuts against the inner wall of the fine filter 2, the rotating assembly 3 brushes the inner wall of the fine filter 2, effectively preventing smaller particles from accumulating on the inner wall and obstructing the filtration process. This ensures sufficient water flow area in the fine filter 2, preventing a decrease in water flow and pressure, and preventing malfunctions in the spray arms due to insufficient water supply during subsequent water circulation. This effectively improves the dishwashing efficiency.

[0038] Compared with the prior art, the self-cleaning filter device provided in this embodiment drives the cleaning component 3 to rotate through the driving component, which can sweep and brush the impurities and stains attached to the inner wall of the fine filter cylinder 2, so that the impurities adsorbed on the fine filter cylinder 2 are removed, thereby effectively ensuring the water flow and water pressure after filtration and improving the dishwashing rate.

[0039] The drive component can be a self-rotating spray arm assembly 4, and the spray arm assembly 4 and the cleaning assembly 3 are connected by a transmission assembly 5.

[0040] The spray arm assembly 4 is the spray arm in the dishwasher tub mentioned above. When the dishwasher is running, that is, when the dishwasher starts the cleaning program, the spray arm assembly 4 rotates and sprays water outward to rinse the dishes in the dishwasher tub.

[0041] Since the spray arm assembly 4 and the cleaning assembly 3 are connected by the transmission assembly 5, after the spray arm assembly 4 rotates, the spray arm assembly 4 can drive the cleaning assembly 3 to rotate through the transmission assembly 5, thereby realizing the cleaning assembly 3 to sweep the inner wall of the fine filter cylinder 2.

[0042] As can be seen, when the driving component is the spray arm assembly 4, the dishwasher equipped with this self-cleaning filter device can synchronously drive the cleaning component 3 to rotate during operation, thereby automatically cleaning the fine filter cartridge 2 without the need to start the driving component, which greatly improves the ease of use of the self-cleaning filter device.

[0043] It should be noted that existing dishwashers typically have spray arms installed at the top and bottom of the inner tub, with the top spray arm being the upper spray arm and the bottom spray arm being the lower spray arm. For example... Figure 3 and Figure 4 As shown, the lower spray arm is installed at the bottom of the dishwasher tub via a spray arm base 40 fixed to the bottom of the tub, and the lower spray arm is positioned adjacent to the drain outlet.

[0044] When the dishwasher is running, that is, when the dishwasher starts the cleaning program, water can enter the upper spray arm and the lower spray arm simultaneously through the water pipe system connected to the spray arm assembly 4 under the drive of the washing pump. At the same time, the upper spray arm and the lower spray arm rotate on their own to spray cleaning water onto the dishes in the inner tub, thereby realizing the washing process of the dishes.

[0045] like Figure 3 and Figure 4 As shown, a flat filter screen 6 is usually installed around the drain outlet at the bottom of the dishwasher. When the washing water flows to the drain outlet, it can be initially filtered through the flat filter screen 6 before flowing to the self-cleaning filter device.

[0046] To improve the ease of installation and stability of the lower spray arm, such as Figure 4 As shown, the periphery of the planar filter screen 6 may be provided with clearance holes, the spray arm base 40 is fixed in the clearance holes, and the lower spray arm is installed on the spray arm base 40.

[0047] When the driving component is the spray arm assembly 4, in order to shorten the distance between the cleaning component 3 and the driving component and simplify the structure of the self-cleaning filter device, this embodiment preferably uses the lower spray arm installed at the bottom of the dishwasher inner tub as the driving component.

[0048] like Figure 3 and Figure 4 As shown, the self-cleaning filter device may further include a filter tube 7, the circumferential sidewall of which is provided with filter holes, and the diameter of the filter holes is larger than the diameter of the filter holes on the sidewall of the fine filter cylinder 2. Further, the diameter of the filter holes may be approximately equal to the diameter of the filter holes on the sidewall of the coarse filter cylinder 1. One end of the filter tube 7 is fixedly connected to the opening of the fine filter cylinder 2, and the coarse filter cylinder 1 is inserted into the fine filter cylinder 2 after passing through the filter tube 7. The opening of the coarse filter cylinder 1 is flush with the opening of the fine filter cylinder 2, and the opening of the fine filter cylinder 2 is flush with the drain outlet.

[0049] At this time, the filter tube 7 is higher than the drain outlet. When the cleaning water after the initial filtration of the flat filter screen 6 flows to the self-cleaning filter device, the cleaning water will first carry impurities through the filter holes on the filter tube 7 and then enter the filter tube 7. Then, under its own weight, it falls into the coarse filter cylinder 1 and then flows through the filter holes on the side wall of the coarse filter cylinder 1 to the fine filter cylinder 2.

[0050] To facilitate the disassembly and assembly of the coarse filter cartridge 1 to remove impurities, in this embodiment, the coarse filter cartridge 1 is preferably fixed inside the fine filter cartridge 2 by a snap-fit ​​method.

[0051] In practical applications, the transmission component 5 can adopt a transmission structure such as chain drive, belt drive or gear drive.

[0052] To improve stability during transmission, this embodiment preferably uses a gear transmission structure for transmission component 5. Specifically, as shown... Figure 3 and Figure 4 As shown, the transmission assembly 5 includes a drive gear 50 and a transmission gear 51. The drive gear 50 is fixedly connected to the spray arm assembly 4, and the transmission gear 51 meshes with one side of the drive gear 50 and is fixedly connected to the cleaning assembly 3.

[0053] like Figure 4 As shown, the existing spray arm assembly 4 usually has a connector pipe connected to the external pipeline at the bottom. In order to improve the transmission effect and transmission efficiency, this embodiment preferably has a through hole in the middle of the drive gear 50. The drive gear 50 is sleeved and fixed to the outside of the connector pipe through the through hole.

[0054] The driven gear can be located on one side of the drive gear 50, and the center of the driven gear is connected to the cleaning assembly 3.

[0055] It should be noted that, to prevent the cleaning component 3 from obstructing impurities from entering the fine filter cartridge 2, sufficient space must be maintained between the coarse filter cartridge 1 and the fine filter cartridge 2 to accommodate the cleaning component 3 and the impurities. To prevent the transmission component 5 from obstructing impurities from entering the coarse filter cartridge 1, the transmission component 5 can be located outside the fine filter cartridge 2 or inside the coarse filter cartridge 1. When the transmission component 5 is located inside the coarse filter cartridge 1, sufficient space must also be maintained within the coarse filter cartridge 1 to accommodate the transmission component 5 and the impurities. Furthermore, the driven gear in the transmission component 5 can also be suspended above the coarse filter cartridge 1.

[0056] To facilitate the transmission connection between the cleaning component 3 and the driven gear, such as Figure 3 and Figure 4 As shown, the transmission assembly 5 also includes a transmission rod structure 52; the bottom of the coarse filter cylinder 1 is provided with a first through hole, the transmission rod structure 52 is located inside the coarse filter cylinder 1, and one end of the transmission rod structure 52 is connected to the transmission gear 51, and the other end passes through the first through hole and is connected to the cleaning assembly 3.

[0057] The transmission rod structure 52 is used to increase the distance between the driven gear and the cleaning assembly 3, so that the driven gear can be suspended above the fine filter cartridge 2 and the coarse filter cartridge 1, and the cleaning assembly 3 can be installed below the coarse filter cartridge 1.

[0058] The first through hole is used to make way for the transmission rod structure 52, so that the transmission rod structure 52 can be connected to the cleaning assembly 3 below the bottom of the coarse filter cylinder 1, thereby facilitating the installation and normal operation of the cleaning assembly 3.

[0059] Further, such as Figure 3 and Figure 4 As shown, the transmission rod structure 52 includes a gear transmission rod 520 and a cleaning transmission rod 521; one end of the gear transmission rod 520 is fixedly connected to the transmission gear 51, and the other end is inserted into one end of the cleaning transmission rod 521; the other end of the cleaning transmission rod 521 passes through the first through hole and is fixedly connected to the cleaning assembly 3.

[0060] When assembling the transmission rod structure 52 between the driven gear and the cleaning assembly 3, the coarse filter cylinder 1 can be positioned outside the fine filter cylinder 2 first, and the cleaning transmission rod 521 can be connected to the cleaning assembly 3. Then, the cleaning assembly 3 can be placed inside the fine filter cylinder 2, and the coarse filter cylinder 1 can be fitted inside the fine filter cylinder 2. At the same time, the cleaning transmission rod 521 can be inserted into the coarse filter cylinder 1 after passing through the first through hole. Then, one end of the gear transmission rod 520 can be inserted into the end of the cleaning transmission rod 521 inside the coarse filter cylinder 1, and the driven gear can be connected to the gear transmission rod 520.

[0061] To simplify the above assembly steps, the driven gear can be pre-fixed to the gear transmission rod 520 by welding, integral molding or other connection methods, or it can be pre-detachably connected to the gear transmission rod 520 by threaded connection or other methods.

[0062] It can be seen that the transmission rod structure 52 includes a gear transmission rod 520 and a cleaning transmission rod 521. When the gear transmission rod 520 and the cleaning transmission rod 521 are connected, the ease of installation and removal of the transmission rod structure 52 between the driven gear and the cleaning assembly 3 can be effectively improved, thereby facilitating the cleaning of impurities in the coarse filter cartridge 1 and the fine filter cartridge 2.

[0063] To enable the insertion between the gear drive rod 520 and the cleaning drive rod 521, one of the gear drive rod 520 and the cleaning drive rod 521 needs to have an insertion hole, and the rod end of the other can be inserted into the insertion hole.

[0064] Since the gear transmission rod 520 needs to rotate at the driven gear to transmit the rotational power to the sweeping transmission rod 521 so that the sweeping transmission rod 521 can drive the sweeping assembly 3 to rotate, the gear transmission rod 520 needs to be able to drive the sweeping transmission rod 521 to rotate.

[0065] To improve the transmission stability between the gear transmission rod 520 and the cleaning transmission rod 521, the circumferential inner wall of the insertion hole between the gear transmission rod 520 and the cleaning transmission rod 521 is designed as a polygonal structure. Correspondingly, the circumferential side wall of the rod body inserted into the insertion hole is also designed as a polygonal structure. For example, the circumferential inner wall of the insertion hole is hexagonal prism, and the rod body of the gear transmission rod 520 or the cleaning transmission rod 521 that can be inserted into the insertion hole is also hexagonal prism.

[0066] In this embodiment, as Figure 4 As shown, the cleaning assembly 3 may include a brush rod 30 and a connecting rod 31. The brush rod 30 extends along the axial direction of the fine filter cylinder 2 and has bristles that abut against the inner wall of the fine filter cylinder 2. The connecting rod 31 is located between the bottom of the coarse filter cylinder 1 and the bottom of the fine filter cylinder 2, and the connecting rod 31 is connected between the cleaning transmission rod 521 and the brush rod 30.

[0067] The connecting rod 31 is used to connect the cleaning transmission rod 521 and the brush rod 30, so that the cleaning transmission rod 521 can transmit the rotational power to the brush rod 30. The brush rod 30 is used to rotate around the fine filter cylinder 2 under the drive of the rotational power, thereby using the bristles to sweep off the impurities attached to the inner wall of the fine filter cylinder 2.

[0068] To improve the cleaning efficiency of the cleaning assembly 3, multiple brush rods 30 and connecting rods 31 can be provided. Multiple connecting rods 31 are distributed at intervals along the circumference of the cleaning transmission rod 521. Correspondingly, the brush rods 30 are distributed at intervals along the circumference of the fine filter cylinder 2.

[0069] Furthermore, the multiple connecting rods 31 are evenly spaced, and the multiple brush rods 30 can also be evenly spaced.

[0070] It should be noted that there are no restrictions on the material of the bristles on the brush handle 30. In order to improve the performance of the self-cleaning filter device, this embodiment preferably uses silicone, nylon or PET (polyethylene terephthalate, commonly known as polyester resin) and other materials with good antibacterial properties.

[0071] like Figure 3 and Figure 4 As shown, a fixing seat 8 is installed at the opening of the fine filter cartridge 2 or the opening of the coarse filter cartridge 1, or a fixing seat 8 is installed at both the opening of the fine filter cartridge 2 and the opening of the coarse filter cartridge 1; the fixing seat 8 is provided with a second through hole, and the transmission rod structure 52 passes through the second through hole.

[0072] The fixed base 8 is used to support the transmission rod structure 52, improve the stability of the transmission rod structure 52, and thus effectively improve the operational stability of the sweeping assembly 3.

[0073] like Figure 3As shown, when the transmission rod structure 52 includes a gear transmission rod 520 and a cleaning transmission rod 521, the gear transmission rod 520 passes through the second through hole on the fixed base 8, and the cleaning transmission rod 521 is disposed in the first through hole on the coarse filter cylinder 1.

[0074] It should be noted that the coarse filter cylinder 1 can also limit and support the transmission rod structure 52 through the first through hole at its bottom. At this time, the coarse filter cylinder 1 and the fixed seat 8 can cooperate with each other to provide two-point support for the transmission rod structure 52, effectively ensuring the transmission stability of the transmission rod structure 52.

[0075] To effectively improve the support effect of the fixed seat 8 on the transmission rod structure 52, in this embodiment, the fixed seat 8 is preferably installed at a higher position at the opening of the fine filter cylinder 2 and the coarse filter cylinder 1. Figure 3 and Figure 4 As shown, when a filter tube 7 is installed at the opening of the coarse filter cylinder 1, the fixing seat 8 can be installed on the top of the filter tube 7.

[0076] To improve the ease of disassembly and assembly of the cleaning component 3, this embodiment preferably uses a quick-disassembly and assembly structure for the fixing base 8. In this case, the fine filter cylinder 2 or the coarse filter cylinder 1 is detachably connected to the fixing base 8, or both the fine filter cylinder 2 and the coarse filter cylinder 1 are detachably connected to the fixing base 8.

[0077] Specifically, the mounting base 8 can be quickly assembled and disassembled through detachable connection methods such as snap-fit, threaded connection, screw connection and rotation snap-fit.

[0078] like Figure 3 As shown, the self-cleaning filter device provided in this embodiment also includes a support shaft 9. One end of the support shaft 9 is fixed to the inner side of the bottom of the fine filter cylinder 2, and the other end is rotatably connected to the cleaning assembly 3.

[0079] The support shaft 9 is used to support the cleaning component 3 when the drive component drives the cleaning component 3 to rotate, thereby improving the operational stability of the cleaning component 3.

[0080] To improve the ease of disassembly and assembly between the cleaning component 3 and the support shaft 9, this embodiment preferably uses an interlocking connection between the cleaning component 3 and the support shaft 9.

[0081] Specifically, the cleaning component 3 may have a slot on the side opposite to the bottom of the coarse filter cartridge 1, and the end of the supporting shaft 9 that is away from the bottom of the fine filter cartridge 2 is inserted into the slot.

[0082] When a transmission component 5 is connected between the drive component and the cleaning component 3, and the transmission component 5 includes a transmission rod structure 52, and the transmission rod structure 52 includes a gear transmission rod 520 and a cleaning transmission rod 521, the support shaft 9 can be coaxially arranged with the cleaning transmission rod 521.

[0083] The support shaft 9 is coaxially arranged with the sweeping transmission rod 521, which can effectively improve the support effect of the support shaft 9 on the sweeping component 3.

[0084] Furthermore, both the support shaft 9 and the cleaning transmission rod 521 can be located on the central shaft of the fine filter cartridge 2.

[0085] It should be noted that when the self-cleaning filter device provided in this embodiment includes both a fixed base 8 and a supporting rotating shaft 9, the supporting rotating shaft 9 can cooperate with the fixed base 8 and the first through hole on the coarse filter cylinder 1 to provide three-point support for both ends of the transmission rod structure 52, thereby effectively improving the transmission stability of the transmission rod structure 52 and thus effectively ensuring the operational stability of the cleaning component 3.

[0086] In this embodiment, the driving component can also be a rotary driver; in this case, the self-cleaning filter device also includes a detection component, which is used to detect whether the spray arm assembly 4 on one side of the self-cleaning filter device is rotating; the rotary driver includes a switch, which is connected to the detection component, and is used to receive the information detected by the detection component and open it when the spray arm assembly 4 rotates according to the information.

[0087] When the dishwasher is running, the spray arm assembly 4 inside the dishwasher tub rotates. The detection component detects this rotation and sends a rotation signal to the rotary drive switch. Upon receiving this signal, the switch automatically opens, activating the rotary drive and causing the cleaning assembly 3 to rotate synchronously, achieving dynamic cleaning. When the dishwasher stops and closes, the spray arm assembly 4 stops rotating. The detection component detects this stillness and sends a stillness signal to the rotary drive switch. Upon receiving this signal, the switch automatically closes, shutting down the rotary drive and causing the cleaning assembly 3 to come to a stop.

[0088] The rotary actuator can be a micro motor or other driving device. The detection component can be a magnetic sensor such as a Hall sensor, or an infrared sensor such as an infrared sensor.

[0089] This embodiment also provides a dishwasher that includes the aforementioned self-cleaning filter device. Since the dishwasher provided in this embodiment includes the aforementioned self-cleaning filter device, it solves the same technical problem and achieves the same technical effect as the aforementioned self-cleaning filter device, and will not be described in detail here.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning filtration device, comprising a coarse filter cylinder (1) and a fine filter cylinder (2) sleeved outside the coarse filter cylinder (1), characterized in that, It also includes a cleaning component (3) and a drive component; The cleaning component (3) is disposed between the coarse filter cylinder (1) and the fine filter cylinder (2), and the cleaning component (3) abuts against the circumferential inner wall of the fine filter cylinder (2); The drive assembly is connected to the cleaning assembly (3), and the drive assembly is used to drive the cleaning assembly (3) to rotate circumferentially along the fine filter cylinder (2).

2. The self-cleaning filter device according to claim 1, characterized in that, The driving component is a self-rotating spray arm assembly (4), and the spray arm assembly (4) and the cleaning assembly (3) are connected by a transmission assembly (5).

3. The self-cleaning filter device according to claim 2, characterized in that, The transmission assembly (5) includes a drive gear (50) and a transmission gear (51). The drive gear (50) is fixedly connected to the spray arm assembly (4), the transmission gear (51) meshes with one side of the drive gear (50), and the transmission gear (51) is fixedly connected to the cleaning assembly (3).

4. The self-cleaning filter device according to claim 3, characterized in that, The transmission assembly (5) also includes a transmission rod structure (52); The bottom of the coarse filter cylinder (1) is provided with a first through hole. The transmission rod structure (52) is located inside the coarse filter cylinder (1). One end of the transmission rod structure (52) is connected to the transmission gear (51), and the other end passes through the first through hole and is connected to the cleaning assembly (3).

5. The self-cleaning filter device according to claim 4, characterized in that, The transmission rod structure (52) includes a gear transmission rod (520) and a cleaning transmission rod (521); One end of the gear transmission rod (520) is fixedly connected to the transmission gear (51), and the other end is inserted into one end of the sweeping transmission rod (521); the other end of the sweeping transmission rod (521) passes through the first through hole and is fixedly connected to the sweeping assembly (3).

6. The self-cleaning filter device according to claim 4, characterized in that, A fixing seat (8) is installed at the opening of the fine filter cylinder (2) and / or the opening of the coarse filter cylinder (1). The fixing seat (8) is provided with a second through hole, and the transmission rod structure (52) passes through the second through hole.

7. The self-cleaning filter device according to claim 6, characterized in that, The fine filter cartridge (2) and / or the coarse filter cartridge (1) are detachably connected to the fixed base (8).

8. The self-cleaning filter device according to any one of claims 1-6, characterized in that, It also includes a support shaft (9), one end of which is fixed to the inner side of the bottom of the fine filter cylinder (2), and the other end is rotatably connected to the cleaning assembly (3).

9. The self-cleaning filter device according to claim 1, characterized in that, The driving component is a rotary driver; The self-cleaning filter device also includes a detection component, which is used to detect whether the spray arm assembly (4) on one side of the self-cleaning filter device is rotating. The rotary drive includes a switch connected to the detection component. The switch is used to receive information detected by the detection component and to open when the spray arm assembly (4) rotates according to the information.

10. A dishwasher, characterized in that, Includes the self-cleaning filter device according to any one of claims 1-9.

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