Filtering system of washing equipment, washing equipment and control method

Abstract

The invention discloses a filtering system of washing equipment, the washing equipment and a control method. The filtering system comprises a thread and scrap separating device and a water storage chamber communicated with a purified water outlet of the thread and scrap separating device; the thread and scrap separating device comprises a shell, wherein a water inlet and a purified water outlet are formed in the shell; the filter cartridge is rotatably arranged in the shell, the water inlet is communicated with the outer side space of the filter cartridge, and the purified water outlet is communicated with the inner space of the filter cartridge; the driving mechanism is connected with the filter cartridge and used for driving the filter cartridge to rotate; the spiral structure is in transmission connection with the driving mechanism and can rotate in the first direction along with the driving mechanism, accumulated water in the water storage cavity is pumped into the filter cartridge from the purified water outlet, and water flow penetrates through the filter cartridge from inside to outside to achieve washing. According to the invention, the driving mechanism for driving the filter cartridge can drive the spiral structure to rotate to pump water into the filter cartridge, so that thread scraps adhered to the filter cartridge are washed away, and the problem that the filter cartridge is blocked by the thread scraps is effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and in particular, relates to a filtering system for washing equipment, washing equipment and a control method. Background Art

[0002] Microlint is the fiber debris from clothing that falls off during the washing process due to friction between clothing and washing machines. Larger microlints are several millimeters long and enter the soil after being discharged into the water, causing soil compaction and affecting the growth of crops. Smaller microlints are only a few microns in size. In addition, due to the widespread popularity of chemical fiber clothing, the microlints produced during the washing process are also called microplastics, which can enter the human blood through the food chain.

[0003] Currently, researchers have found the above-mentioned micro-lint in the blood of embryos. Although the direct health effects of micro-lint on the human body are still unclear, for the long-term consideration of human health, some regions have implemented step-by-step management of micro-lint emissions, striving to cut off micro-lint emissions from the source. Therefore, washing equipment such as washing machines can only be improved to filter and collect the micro-lint generated during the washing process.

[0004] In order to improve the washing effect and prevent lint from adhering to clothes during the washing process, various washing machines with washing water filtering functions already exist in the prior art. However, the filtering function of current washing machines is often limited to larger lint, but cannot filter out the micro-lint mentioned above. If the filtering device in the existing washing machine is directly improved and the filtering accuracy of the filter is adjusted, although the micro-lint can be intercepted, it is found in actual testing that the filter is easily clogged, which affects the washing process, for example, causing the washing machine to drain water for a long time.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a filtering system, washing equipment and control method for washing equipment, which can drive water to flow reversely through the wire chip separation device to backwash and clean the filter cylinder therein, thereby promptly eliminating the blockage failure of the wire chip separation device.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A filtering system for washing equipment, comprising a wire scrap separation device and a water storage chamber connected to a clean water outlet of the wire scrap separation device;

[0009] The wire scrap separation device comprises:

[0010] A shell body, on which a water inlet and the purified water outlet are arranged;

[0011] A filter cartridge is rotatably disposed inside the housing, the water inlet is communicated with the outer space of the filter cartridge, and the clean water outlet is communicated with the inner space of the filter cartridge;

[0012] A driving mechanism, connected to the filter cartridge, for driving the filter cartridge to rotate;

[0013] The spiral structure is transmission-connected with the driving mechanism and can rotate in a first direction with the driving mechanism to draw the accumulated water in the water storage chamber from the clean water outlet to the inside of the filter cartridge, so that the water flows through the filter cartridge from the inside to the outside to achieve flushing.

[0014] Furthermore, the wire scrap separation device further comprises a connecting shaft coaxially arranged with the filter cartridge, and the spiral structure is fixed on the connecting shaft;

[0015] One end of the connecting shaft is connected to the driving mechanism via a clutch structure. When the driving mechanism rotates in a first direction, the connecting shaft rotates synchronously with the driving mechanism, driving the spiral structure to rotate and pump water. When the driving mechanism rotates in a second direction opposite to the first direction, the connecting shaft does not rotate.

[0016] Furthermore, the other end of the connecting shaft extends from the purified water outlet to the outside of the shell, and the spiral structure is arranged at the other end of the connecting shaft.

[0017] Furthermore, an end stop is provided at the other end of the connecting shaft, and the end stop is a plate-shaped structure perpendicular to the axis of the connecting shaft, and the outer periphery of the end stop contacts the inner wall of the water storage chamber to support the connecting shaft; a water-passing structure is provided on the end stop;

[0018] Preferably, a raised limiting portion is provided on the inner wall of the water storage chamber, and the side of the end stop facing away from the connecting shaft is stopped and limited by the limiting portion.

[0019] Furthermore, the spiral structure is fixed on the inner wall of the filter cartridge; the driving mechanism drives the filter cartridge to rotate, and the spiral structure rotates synchronously with the filter cartridge;

[0020] Preferably, the shell is coaxially arranged with the filter cartridge, and the clean water outlet is arranged at one end of the shell; and the spiral structure is arranged on the inner wall of the filter cartridge in a region close to the clean water outlet.

[0021] A washing device comprises the filtering system of the washing device described above.

[0022] Furthermore, it also includes a blockage detection device, which sends a blockage fault signal when the internal pressure of the shell of the wire chip separation device is greater than a pressure threshold.

[0023] Further, the blockage detection device includes a pressure sensor disposed on the housing;

[0024] Alternatively, an opening is provided on the shell, and the opening is covered with an elastic membrane; the blockage detection device includes a detection end fixedly arranged in the washing device, and a detected end arranged on the elastic membrane; the elastic membrane deforms as the pressure inside the shell changes, driving the detected end to approach / move away from the detection end.

[0025] A control method for the washing device described above controls the driving mechanism to rotate in a first direction, thereby driving the spiral structure to rotate, and pumping water into the filter cartridge for backwash cleaning.

[0026] Further, the washing device receives a blockage fault signal sent by the blockage detection device, and controls the driving mechanism to rotate in a first direction;

[0027] Alternatively, the washing device further comprises a water pump for driving water to flow toward the lint separation device for filtering; the washing device receives a signal indicating that the working current / working power of the water pump is greater than a preset value, and controls the driving mechanism to rotate in a first direction.

[0028] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0029] In the present invention, water can be pumped into the filter cartridge of the wire scrap separation device by rotating the spiral structure, so that the water flows through the filter cartridge in the reverse direction to wash away the wire scraps adhering to the filter cartridge, especially when the centrifugal force of the filter cartridge rotation is insufficient to peel off the wire scraps, thereby effectively solving the problem of the filter cartridge being blocked by wire scraps. Since the spiral structure and the filter cartridge are driven by the same driving mechanism, costs are saved.

[0030] In the present invention, the spiral structure is fixed on the connecting shaft, and the transmission connection between the connecting shaft and the driving mechanism is realized through the clutch structure. When the driving mechanism rotates in the first direction, it can drive the spiral structure to rotate synchronously. During normal filtration, when the driving mechanism rotates in the second direction, it will not drive the connecting shaft and the spiral structure to rotate, thereby reducing the load of the driving mechanism.

[0031] In the present invention, the spiral structure is fixed on the inner wall of the filter cartridge, and the spiral structure always rotates synchronously with the filter cartridge. During normal filtration, the spiral structure rotates in the second direction with the filter cartridge, and can also assist in driving the water flow to be discharged from the clean water outlet, which helps to keep the inside of the filter cartridge at a low water level, making it easier for water on the outside of the filter cartridge to enter the inside of the filter cartridge, thereby improving the filtration efficiency.

[0032] In the present invention, by setting up a blockage detection device, the blockage fault can be detected in time when the internal pressure of the shell of the wire chip separation device increases, and then the washing equipment can drive the spiral structure to rotate through the driving mechanism, and then reversely pump water into the filter cylinder to achieve a recoil effect, thereby achieving the purpose of timely eliminating the blockage fault and avoiding affecting the operation of the washing equipment.

[0033] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the structure of the washing equipment in Embodiments 1 and 2 of the present invention;

[0036] Figure 2 The present invention Figure 1 The enlarged schematic diagram of point B in the middle;

[0037] Figure 3 It is a schematic diagram of the structure of the washing equipment in the third and fourth embodiments of the present invention;

[0038] Figure 4 The present invention Figure 3 The enlarged schematic diagram of the center C;

[0039] Figure 5 is a schematic diagram of a situation in which a wire scrap separation device is blocked in a fourth embodiment of the present invention;

[0040] Figure 6 It is a schematic diagram of the structure of the washing equipment in the fifth embodiment of the present invention.

[0041] In the figure: 100, housing; 200, water container; 300, door; 410, water pipe; 420, water pump; 430, wire scrap collector; 431, connecting pipe; 440, waste water return pipe; 450, water supply pipe; 460, clean water outlet pipe; 461, external drainage pipe; 462, internal circulation pipe; 463, water storage pipe; 464, limiter; 465, water baffle; 470, three-way valve; 480, control Valve control; 490, wire scrap separation device; 491, motor; 492, housing; 4921, water inlet; 4922, clean water outlet; 4923, waste water outlet; 493, filter cartridge; 494, connecting shaft; 495, spiral structure; 496, end stop; 610, main control module; 620, detection end; 630, connecting pipe; 640, elastic membrane; 650, detected end; 660, pressure sensor.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figures 1 to 6 As shown, an embodiment of the present invention provides a filtration system for a washing device, and a washing device including the filtration system. The washing device may be a washing machine, a washer-dryer, a care machine, or other washing device with a clothes washing function.

[0047] Specifically, the washing device includes a housing 100, a water drum 200 is connected to the housing 100 through a hanging device (not shown in the figure), and a washing drum is also arranged in the water drum 200 for holding the laundry. A door 300 is hingedly connected to the front side of the housing 100 for blocking the laundry openings of the washing drum and the water drum 200.

[0048] The filtering system is arranged in the housing 100, and is used to filter the washing water in the water drum 200. The filtering system at least includes a lint separation device 490 connected to the water drum 200, and the lint separation device 490 is provided with a water inlet 4921 and a clean water outlet 4922. The water in the water drum 200 enters the lint separation device 490 through the water inlet 4921, and is discharged from the clean water outlet 4922 after being filtered. The clean water outlet 4922 is connected to a clean water outlet pipe 460, on which a three-way valve 470 is arranged, and the three-way valve 470 is respectively connected to an external drainage pipe 461 and an internal circulation pipe 462.

[0049] More specifically, the three-way valve 470 is a two-position three-way solenoid valve, which can control the external drainage pipe 461 and the internal circulation pipe 462 to be connected to the purified water outlet pipe 460. The external drainage pipe 461 is connected to the outside of the housing 100 for draining water outward, for example, it can be inserted into the floor drain of the user's home. The internal circulation pipe 462 is connected to the top of the water storage cylinder 200 and is connected, or connected to the observation window pad at the mouth of the water storage cylinder for circulating filtration during washing.

[0050] Furthermore, a water pump 420 is provided at the bottom of the housing 100, and the bottom of the water drum 200 is connected to a water diversion pipe 410, which is connected to the water inlet end of the water pump 420 through the water diversion pipe 410. The water outlet end of the water pump 420 is connected to one end of the water delivery pipe 450, and the other end of the water delivery pipe 450 is connected to the water inlet 4921 of the lint separation device 490, so that the washing water in the water drum 200 can be driven by the water pump 420 to enter the lint separation device 490 for filtration.

[0051] In a further embodiment, the lint separation device 490 includes a housing 492, a filter cartridge 493 rotatably mounted inside the housing 492, and a driving mechanism for driving the filter cartridge 493 to rotate. The water inlet 4921 and the clean water outlet 4922 are both provided on the housing 492, wherein the water inlet 4921 is communicated with the outer space of the filter cartridge 493, and the clean water outlet 4922 is communicated with the inner space of the filter cartridge 493.

[0052] Specifically, the housing 492 is cylindrical, the filter cartridge 493 is cylindrical, and has a filter screen for filtering water flow on its side wall. As a detailed solution, the side wall of the filter cartridge 493 can be completely formed by the filter screen. The driving mechanism is a motor 491 fixed to the outside of the housing 492, and the filter cartridge 493 is connected to the output shaft of the motor 491. The two ends of the filter cartridge 493 abut against the two end faces of the housing 492, and both maintain a rotatable sealed connection with the housing 492. In this way, the housing 492 and the filter cartridge 493 form two spaces, and the water inlet 4921 communicates with the space surrounded by the housing 492 and the outside of the filter cartridge 493. The water filtered by the filter cartridge 493 enters the cylindrical space inside the filter cartridge 493. A circular opening is provided at the center of the end of the shell 492 where the motor 491 is not installed, as a clean water outlet 4922. The diameter of the clean water outlet 4922 is less than or equal to the diameter of the filter cartridge 493, so that the filtered water can flow out from the clean water outlet 4922.

[0053] It is understandable that the filtering accuracy of the filter screen on the filter cartridge 493 needs to be sufficient to intercept the micro-wires carried in the water flow.

[0054] When the washing device is working, during the washing and rinsing process, the three-way valve 470 conducts the clean water outlet pipe 460 and the inner circulation pipe 462, and the water pump 420 operates intermittently or continuously to pump the washing water in the water holding drum 200 to the lint separation device 490 and enter the space between the housing 492 and the filter cylinder 493. After the lint or other filtered impurities in the washing water are filtered by the filter cylinder 493, they enter the space inside the filter cylinder 493, flow from the clean water outlet 4922 to the clean water outlet pipe 460, and guide the water along the inner circulation pipe 462 to flow into the water holding drum 200 again. At the same time, the motor 491 is started, driving the filter cylinder 493 to rotate, and the lint blocked by the filter screen on the filter cylinder 493 and adhering to the outer wall of the filter cylinder 493 is thrown to the edge of the housing 492 under the action of centrifugal force, so that the filter screen on the filter cylinder 493 remains unobstructed.

[0055] When drainage is required after washing and rinsing, the three-way valve 470 is controlled to switch the conduction direction, that is, the clean water outlet pipe 460 and the external drain pipe 461 are connected, and then the water pump 420 starts to run, and the washing water in the water drum 200 is pumped to the wire chip separation device 490 for filtration. The filtered clean water flows from the clean water outlet pipe 460 to the external drain pipe 461, and is finally discharged to the outside of the washing equipment along the external drain pipe 461.

[0056] In the above manner, the washing machine can circulate and filter to remove lint in the washing water during the washing process, thereby improving the washing effect of clothes. The drainage water flow of the washing machine first passes through the lint separation device 490 before being discharged, which can intercept micro-lint in the drainage water flow, thereby solving the problem of excessive micro-lint content in the drainage water flow.

[0057] In a further solution, the wire scrap separation device 490 also has a wastewater outlet 4923 , through which the filtered impurities such as the filtered wire scraps can be discharged along with the water flow, thereby achieving self-cleaning of the wire scrap separation device 490 .

[0058] Specifically, the wastewater outlet 4923 is arranged at the bottom of the housing 492 and communicates with the space enclosed by the housing 492 and the outer side of the filter cartridge 493. The wastewater outlet 4923 is connected to the wastewater return pipe 440, and a control valve 480 for controlling the on-off of the wastewater return pipe 440 is arranged on the wastewater return pipe 440. The control valve 480 may be a two-way solenoid valve. The end of the wastewater return pipe 440 is connected to a wire scrap collector 430, which can receive wastewater mixed with filtered impurities discharged by the wire scrap separation device 490.

[0059] More specifically, the axis of the shell 492 of the wire scrap separation device 490 extends in a horizontal or nearly horizontal direction, the water inlet 4921 is arranged near the top of the shell 492, and the waste water outlet 4923 is arranged near the bottom of the shell 492. In this way, the washing water entering the shell 492 flows downward under the force of gravity, and can more fully contact the filter cartridge 493 to achieve filtration, and the inflowing water can also play a certain flushing effect on the filter screen 493. The filtered wire scraps and the undischarged water are collected at the bottom of the shell 492, and can be discharged more thoroughly from the wire scrap separation device 490.

[0060] In a further solution, the lint collector 430 is disposed at a height lower than that of the wastewater outlet 4923 , and the wastewater return pipe 440 at least partially extends downward, thereby connecting the wastewater outlet 4923 with the lint collector 430 .

[0061] Specifically, the lint collector 430 is disposed in the bottom area of ​​the housing 100 , and when the control valve 480 is opened to allow the wastewater return pipe 440 to be connected, the wastewater mixed with filtered impurities can flow toward the lint collector 430 autonomously under the action of gravity.

[0062] Furthermore, a filter screen or a similar filtering structure is provided inside the lint collector 430, and the filtering accuracy of the filtering structure can at least intercept micro-lint. After the wastewater entering the lint collector 430 is filtered, the filtered impurities containing micro-lint carried therein can be separated from the water. The lint collector 430 is connected to the water pump 420, and the separated water without filtered impurities can flow into the water pump 420.

[0063] In detail, the filtering accuracy of the internal filtering structure of the wire dust collector 430 is at least not lower than the filtering accuracy of the filter screen on the filter cartridge 493 in the wire dust separation device 490. That is, the filtering aperture of the internal filtering structure of the wire dust collector 430 should not be larger than the filtering aperture of the filter screen on the filter cartridge 493 in the wire dust separation device 490. In this way, it can be ensured that the filtered impurities carried in the wastewater discharged by the wire dust separation device 490 can be completely collected in the wire dust collector 430.

[0064] In the washing device having the above structure, the control valve 480 is kept closed during the washing, rinsing and draining process. After dehydration, the water pump 420 is in a closed state, and at this time, the amount of water in the housing 492 of the wire scrap separation device 490 is very small, but mixed with wire scraps. After opening the control valve 480, under the action of gravity, the waste water mixed with wire scraps will flow into the wire scrap collector 430 through the waste water return pipe 440, and after being filtered by the filter screen in the wire scrap collector 430, it will flow into the water pump 420.

[0065] However, in order to filter the micro-thread scraps in the water, the pore size of the filter on the filter cartridge 493 is very small, and may even reach the micron level. In the actual operation of the washing equipment, it is found that the filter on the filter cartridge 493 is easily covered or blocked by thread scraps, which makes it impossible to realize the circulating filtration function during the washing process, or reduces the drainage efficiency during the drainage stage, greatly prolongs the drainage time, and even causes the washing program to be interrupted, affecting the washing process. In addition, due to the limited space in the casing 100 of the washing equipment, it is impossible to increase the diameter of the shell 492 and the filter cartridge 493 to increase the centrifugal force, thereby preventing the filter on the filter cartridge 493 from being blocked. In addition, due to the limitation of the operating noise, it is not suitable to increase the speed of the motor 491 to increase the centrifugal force, and the excessive centrifugal force will also keep the incoming washing water away from the filter cartridge 493, resulting in a decrease in the speed at which the thread scrap separation device 490 discharges clean water.

[0066] Embodiment 1

[0067] like Figure 1 and Figure 2 As shown, this embodiment is used to solve the problem that the lint separation device 490 in the above-mentioned washing equipment is easily blocked, thus affecting the operation of the washing equipment.

[0068] Specifically, the present embodiment provides a filtering system applied to the above-mentioned washing equipment, including a wire scrap separation device 490, and a water storage chamber connected to a clean water outlet 4922 of the wire scrap separation device 490. More specifically, the clean water outlet 4922 of the wire scrap separation device 490 is connected to a water storage pipe 463, and the water storage pipe 463 is connected to a clean water outlet pipe 460. The water storage chamber is formed inside the water storage pipe 463, which can realize the water storage function without affecting the clean water after filtration flowing along the clean water outlet pipe 460 to the external drainage pipe 461 or the internal circulation pipe 462.

[0069] The wire scrap separation device 490 described in this embodiment further includes a spiral structure 495, which is in driving connection with the driving mechanism of the wire scrap separation device 490, that is, the motor 491. The spiral structure 495 can rotate in a first direction along with the motor 491, and the accumulated water stored in the water storage pipe 463 is drawn into the inside of the filter cartridge 493 through the clean water outlet 4922, and then the water flows from the inside to the outside of the filter cartridge 493 through the filter screen thereon to achieve flushing.

[0070] In this embodiment, the direction of rotation of the spiral structure 495 is set to pump water into the filter cartridge 493 when it rotates in the first direction. It is understandable that when filtering using the wire scrap separation device 490, since it is necessary to drain water outward from the clean water outlet 4922, the spiral structure 495 cannot rotate in the first direction. However, the filter cartridge 493 is connected to the motor 491 and always rotates with the motor 491. Therefore, if the filter cartridge 493 needs to rotate during filtering, it is necessary to control the motor 491 to rotate and drive the filter cartridge 493 in a second direction opposite to the first direction to avoid the rotation of the spiral structure 495 causing resistance to the discharge of clean water.

[0071] In this embodiment, the wire scrap separation device 490 has the above-mentioned structure. Under normal circumstances, the motor 491 can drive the filter barrel 493 to rotate to throw off the adhered wire scraps. However, once the wire scraps cannot be peeled off by the centrifugal force generated by the rotation of the filter barrel 493, it means that the wire scraps are stuck on the filter screen of the filter barrel 493, and the tip of the wire scraps is located inside the filter barrel 493, and the thick end is located outside the filter barrel 493. At this time, the spiral structure 495 is driven by the motor 491 to rotate in the first direction, so that the water flows from the inside of the filter barrel 493 to the outside through the filter screen, and the wire scraps adhered to the filter screen can be easily peeled off. At the same time, since the filter barrel 493 also rotates synchronously, the peeled wire scraps are thrown to the inner wall of the shell 492.

[0072] In this embodiment, in order to realize that the motor 491 drives the spiral structure 495 to rotate, the wire scrap separation device 490 further includes a connecting shaft 494 coaxially arranged with the filter cartridge 493. The connecting shaft 494 is in transmission connection with the motor 491, and the spiral structure 495 is fixed on the connecting shaft 494, so that the spiral structure 495 can be driven to rotate by the transmission of the connecting shaft 494.

[0073] Specifically, the connecting shaft 494 is located inside the filter cartridge 493, and one end (i.e. Figure 1The left end of the middle part) is connected to the motor 491 through a clutch structure transmission. When the output shaft of the motor 491 rotates in the first direction, the clutch structure transmission causes the connecting shaft 494 to rotate synchronously with the motor 491, driving the spiral structure 495 to rotate in the first direction to pump water. When the output shaft of the motor 491 rotates in the second direction, the clutch structure does not transmit, that is, the connecting shaft 494 does not rotate, and the spiral structure 495 also remains stationary.

[0074] As a specific solution, the clutch structure is a ratchet structure arranged at the connection between the left end of the connecting shaft 494 and the output shaft of the motor 491. When the motor 491 rotates in the second direction, it cannot drive the connecting shaft 494 to rotate, but when it rotates in the first direction, it can drive the connecting shaft 494 to rotate accordingly.

[0075] With the above structure, during normal filtering, the motor 491 rotates in the second direction, driving only the filter cartridge 493 to rotate, but not the connecting shaft 494 and the spiral structure 495 , thereby reducing the load of the motor 491 .

[0076] In the preferred embodiment of the present invention, the right end of the connecting shaft 494 passes through the end opening of the filter cartridge 493 and extends to the outside of the housing 492 through the purified water outlet 4922. The spiral structure 495 is disposed in the right end region of the connecting shaft 494 and spirally extends along the side wall of the connecting shaft 494 for a certain length.

[0077] More preferably, the spiral structure 495 is completely located, or at least mostly located, outside the shell 492 , and the maximum outer diameter of the spiral structure 495 is smaller than the diameter of the clean water outlet 4922 .

[0078] In this embodiment, the spiral structure 495 is arranged at the right end area of ​​the connecting shaft 494 outside the housing 492, that is, it extends into the water storage pipe 463, and then the spiral structure 495 rotates to more efficiently draw the accumulated water in the water storage pipe 463 into the filter cartridge 493. The water storage pipe 463 and the clean water outlet 4922 of the wire scrap separation device 490 are connected by plug-in fixing. By reasonably setting the outer diameter of the spiral structure 495, a certain gap is maintained between the spiral structure 495 and the inner wall of the water storage pipe 463, avoiding the contact and friction between the spiral structure 495 and the inner wall of the water storage pipe 463, which hinders the smooth rotation of the spiral structure 495.

[0079] In a further solution of this embodiment, an end stopper 496 is provided at the right end of the connecting shaft 494, and the end stopper 496 is a circular plate-shaped structure perpendicular to the axis of the connecting shaft 494. The diameter of the end stopper 496 is larger than the cross-sectional diameter of the connecting shaft 494, and the outer periphery of the end stopper 496 contacts the inner wall of the water storage pipe 463, so as to support the right end of the connecting shaft 494. At the same time, the diameter of the end stopper 496 is larger than the maximum outer diameter of the spiral structure 495 to prevent the spiral structure 495 from rubbing against the inner wall of the water storage pipe 495. A water-passing structure is provided on the end stopper 496, for example, the end stopper 496 is provided as a porous structure, so as not to affect the water flow passing through the end stopper 496 and flowing into the clean water outlet pipe 460, or passing through the end stopper 496 in the reverse direction and entering the interior of the filter cartridge 493.

[0080] As a specific implementation, the end stop 496 is fixed in the water storage pipe 463, and the right end of the connecting shaft 494 is rotatably inserted into the end stop 496, thereby providing rotational support for the connecting shaft 494 and the spiral structure 495.

[0081] As another specific embodiment, the right end of the connecting shaft 494 is fixedly connected to the end stop 496, and the outer periphery of the end stop 496 is rotatably in contact with the inner wall of the water storage pipe 463. Since the end stop 496 is limited in the water storage pipe 463 and cannot produce movement perpendicular to the axial direction of the connecting shaft 494, it can provide rotational support for the connecting shaft 494 and the spiral structure 495.

[0082] Preferably, for the solution of fixedly connecting the connecting shaft 494 and the end stop 496, a raised stopper 464 is provided on the inner wall of the water storage pipe 463, and the side of the end stop 496 facing away from the connecting shaft 494 is stopped and limited by the stopper 464. In this way, the connecting shaft 494 can be prevented from moving along its axial direction, and the structure is more stable.

[0083] In a further solution of this embodiment, the axis of the filter cartridge 493 is arranged in the horizontal direction, the water storage pipe 463 is connected to the clean water outlet 4922 of the wire scrap separation device 490 and is arranged to extend horizontally, and the clean water outlet pipe 460 is connected to the extended end of the water storage pipe 463 and is arranged to extend downward. The water storage pipe 463 is provided with a water baffle 465 extending upward from the bottom at a position near the extended end, and a water gap is provided between the top of the water baffle 465 and the inner wall of the water storage pipe 463.

[0084] Through the above structure, the clean water flowing out of the clean water outlet 4922 enters the water storage pipe 463, is blocked by the water baffle 465 and does not flow directly into the clean water outlet pipe 460, so that a water storage chamber for retaining a portion of the clean water is formed between the water baffle 465 and the starting end of the water storage pipe 463. When the clean water continues to be discharged from the clean water outlet 4922, the water level in the water storage pipe 463 gradually rises until it is higher than the top of the water baffle 465. At this time, the clean water can overflow from the water gap above the water baffle 465, and then flow along the clean water outlet pipe 460 to the external drainage pipe 461 or the internal circulation pipe 462.

[0085] Furthermore, the cross-sectional area of ​​the water storage pipe 463 is larger than the cross-sectional area of ​​the clean water outlet pipe 460 , which is beneficial for retaining enough clean water in the water storage pipe 463 to flush the filter cartridge 493 .

[0086] Furthermore, a small hole is provided at the bottom of the water retaining plate 465, so that the filtered clean water can be discharged at a relatively small flow rate. By so arranging, during normal filtration, water can be stored in the water storage pipe 463, and after filtration, the clean water can be discharged through the small hole at the bottom of the water retaining plate 465, without residual water.

[0087] The washing device of this embodiment has the above structure. During normal filtering, a portion of the clean water discharged from the clean water outlet 4922 of the lint separation device 490 can be retained in the water storage pipe 463. When the lint separation device 490 is blocked, the motor 491 can drive the spiral structure 495 to rotate in the first direction, and then the water is pumped from the water storage pipe 463 into the filter cartridge 493, and then flows from the inside of the filter cartridge 493 to the outside, thereby backwashing the filter screen on the filter cartridge 493 and peeling off the attached lint.

[0088] In this embodiment, the lower end of the clean water outlet pipe 460 of the filtration system is connected to the three-way valve 470 located above the water storage cylinder 200. The inner circulation pipe 462 extends vertically downward from the three-way valve 470 and is connected to the wall of the water storage cylinder 200, or the outlet end of the inner circulation pipe is connected to the observation window pad at the mouth of the water storage cylinder, and returns water to the water storage cylinder through the observation window pad. The outer drainage pipe 461 extends horizontally backward from the three-way valve 470, extends to the outside of the housing 100, and then extends downward, and can be inserted into the floor drain to achieve drainage.

[0089] One end of the wastewater return pipe 440 is connected to the wastewater outlet 4923 of the wire scrap separation device 490, and the other end is connected to the wire scrap collector 430 arranged below the wastewater outlet 4923. The wastewater return pipe 440 is at least partially extended downward, and the lower end of the downwardly extended part is connected to the wire scrap collector 430, so that the wastewater carrying the wire scraps can flow to the wire scrap collector 430 along the wastewater return pipe 440 under the action of gravity.

[0090] The lint collector 430 is arranged at a higher position than the water pump 420, and the two are connected through the connecting pipe 431. After the waste water mixed with lint is filtered in the lint collector 430, the water after the lint is filtered flows into the water pump 420 along the connecting pipe 431 under the action of gravity. When the water pump 420 is started again, this part of water can be discharged from the washing device along the water supply pipe 450, the clean water outlet pipe 460 and the external drainage pipe 461.

[0091] In this embodiment, the control method of the washing equipment includes: controlling the motor 491 to rotate in a first direction, driving the spiral structure 495 to rotate accordingly, and pumping water into the filter cartridge 493 for backwash cleaning.

[0092] Specifically, when the lint separation device 490 continues filtering for a preset time, the motor 491 can be controlled to rotate in the first direction, so as to backwash the filter cartridge 493. Alternatively, the working state of the lint separation device 490 can be detected, and when it is determined that it is blocked, the motor 491 can be controlled to rotate in the first direction, so as to backwash the filter cartridge 493.

[0093] Furthermore, before controlling the motor 491 to rotate in the first direction, the water pump 420 is also controlled to be turned off, thereby stopping the process of pumping water from the water container 200 to the lint separation device 490 .

[0094] Furthermore, after the last drainage of the washing program of the washing device is completed, the control valve 480 can be opened to control the motor 491 to rotate in the first direction, so that the accumulated water remaining in the water storage pipe 463 is pumped into the filter cartridge 493, so that this part of the accumulated water can be discharged through the wastewater outlet 4923 of the lint separation device 490. On the one hand, the problem of residual accumulated water in the water storage pipe 463 after the washing device ends its operation is avoided. On the other hand, it also helps to drive the lint in the housing 492 to flow along the wastewater return pipe 440 to the lint collector 430.

[0095] In this embodiment, the working process of the washing equipment is specifically as follows.

[0096] After the washing machine is started, water is introduced into the water drum 200, and the three-way valve 470 is controlled to keep the clean water outlet pipe 460 and the inner circulation pipe 462 connected, and the control valve 480 is kept closed. During the washing and rinsing process, the water pump 420 operates intermittently or continuously, and the washing water in the water drum 200 is pumped along the water delivery pipe 450 to the lint separation device 490 for filtration. The filtered water flows from the clean water outlet 4922 to the clean water outlet pipe 460, and flows into the water drum 200 again along the inner circulation pipe 462, realizing the circulation and filtration function of the washing water.

[0097] When the main wash and rinse are completed and drainage is required, the three-way valve 470 is controlled to connect the clean water outlet pipe 460 and the external drain pipe 461. Then the water pump 420 starts to run and pumps the washing water in the water drum 200 to the lint separation device 490 for filtration. The filtered clean water flows from the clean water outlet pipe 460 to the external drain pipe 461, and is finally discharged to the outside of the washing equipment along the external drain pipe 461.

[0098] During the above-mentioned circulation filtration or drainage filtration process, the motor 491 is continuously or intermittently started to drive the filter cartridge 493 to rotate in the second direction, so that the wire scraps adhering to the outer wall of the filter cartridge 493 are thrown to the edge of the housing 492 under the action of centrifugal force. Once the filter screen on the filter cartridge 493 is blocked, the water pump 420 is controlled to be turned off, and then the motor 491 is controlled to rotate in the first direction, driving the spiral structure 495 to rotate in the same direction, and the clean water retained in the water storage pipe 463 is pumped into the filter cartridge 493 for backwash cleaning. After the backwash cleaning is completed, the interrupted filtration process is continued.

[0099] When the washing program runs to the dehydration stage, or the dehydration stage is close to the end, the water pump 420 is in a closed state, and the control valve 480 is opened to conduct the waste water return pipe 440. The accumulated water remaining in the wire scrap separation device 490 can carry the filtered impurities such as wire scraps and flow out from the waste water outlet 4923, and enter the wire scrap collector 430 along the waste water return pipe 440 under the action of gravity. At this time, the motor 491 can also be controlled to rotate in the first direction, thereby driving the spiral structure 495 to rotate and extract the accumulated water in the water storage pipe 463, and the wire scraps remaining in the power shell 492 are fully discharged with the water flow. After the waste water mixed with wire scraps is filtered in the wire scrap collector 430, the filtered impurities in the water, including micro wire scraps, etc., can be collected inside the wire scrap collector 430, and the water without wire scraps after filtration flows into the water pump 420.

[0100] The washing device of this embodiment can circulate the washing water during the washing process to separate the micro-thread chips from the water. During the drainage process, the thread chip separation device 490 can also be used to intercept the micro-thread chips, and then the water without micro-thread chips can be discharged, which effectively reduces the content of micro-thread chips in the drainage of the washing device. The micro-thread chips filtered out of the water by the thread chip separation device 490 can be discharged with the accumulated water after the filtration is completed, and the micro-thread chips and other filtered impurities are collected by the thread chip collector 430, which effectively avoids the problem of micro-thread chips generated during the washing process being discharged.

[0101] The spiral structure 495 provided in the wire scrap separation device 490 can pump water into the filter cartridge 493 by rotating, so that the water flows in the opposite direction through the filter screen on the filter cartridge 493, and washes away the wire scraps adhering to the filter cartridge 493, especially when the centrifugal force of the filter cartridge 493 is insufficient to peel off the wire scraps, thus effectively solving the problem of the filter cartridge 493 being blocked by wire scraps. In addition, since the spiral structure 495 and the filter cartridge 493 are driven by the same motor 491, the structure is compact, the installation space occupied is reduced, and the cost is saved.

[0102] Embodiment 2

[0103] like Figure 1 and Figure 2 As shown, this embodiment is a further limitation of the above-mentioned embodiment 1, and the washing device also includes a blockage detection device, through which the washing device can obtain the working status of the wire scrap separation device 490 to determine whether a blockage failure occurs.

[0104] In this embodiment, the washing equipment can control the motor 491 of the wire chip separation device 490 according to the detection results fed back by the blockage detection device, so as to backwash and clean the filter cartridge 493 when a blockage failure occurs in the wire chip separation device 490, thereby eliminating the blockage failure in time and ensuring that the operation of the washing equipment is not affected.

[0105] It is understandable that when the water pump 420 is continuously running and delivering washing water to the lint separation device 490 for filtering, once the filter screen on the filter cartridge 493 is blocked by lint, since the washing water still continuously enters the shell 492 of the lint separation device 490 along the water delivery pipe 450, the pressure in the space enclosed by the shell 492 and the outside of the filter cartridge 493 will inevitably increase. Based on this, the blockage detection device described in this embodiment can detect the working state of the lint separation device 490 through the pressure change inside the shell 492.

[0106] Specifically, in this embodiment, the blockage detection device can send a blockage fault signal when the pressure inside the housing 492 is greater than the pressure threshold. When the washing device receives the blockage fault signal, it determines that the lint separation device 490 is blocked, and then controls the water pump 420 to stop running and the motor 491 to rotate in the first direction, driving the spiral structure 495 to rotate and pump water, and backwashing and cleaning the filter cartridge 493.

[0107] In the specific scheme of this embodiment, the blockage detection device includes a pressure sensor 660 disposed on the housing 492, and the pressure value inside the housing 492 can be directly detected by the pressure sensor 660. Accordingly, the blockage fault signal is a signal that the pressure value detected by the pressure sensor 660 is greater than the pressure threshold. When the washing device receives the signal, it determines that a blockage fault has occurred. At this time, the washing device controls the water pump 420 to stop working, and then controls the motor 491 to drive the filter cartridge 493 and the spiral structure 495 to rotate in the first direction to achieve backwash cleaning of the filter cartridge 493.

[0108] In this embodiment, the setting of the pressure threshold can be determined according to the performance of the wire scrap separation device 490 itself, such as the pressure bearing capacity of the housing 492, and a certain safety factor is designed to ensure that the wire scrap separation device 490 will not be damaged when the actual pressure value is lower than the pressure threshold. At the same time, the setting of the pressure threshold also needs to take into account the possible abnormal drainage of the wire scrap separation device 490. Reasonable setting of the pressure threshold can filter out the abnormal drainage, and then when the detected pressure value is greater than the pressure threshold, it can accurately determine that the wire scrap separation device 490 is blocked.

[0109] The washing machine provided in this embodiment is provided with a pressure sensor 660 on the housing 492 of the wire scrap separation device 490, and detects whether the filter cartridge 493 in the wire scrap separation device 490 is blocked by detecting the internal pressure of the housing 492. In this way, the blockage fault can be found in time, and then the spiral structure 495 can be driven to rotate and pump water to backwash the filter cartridge 493, so that the wire scraps blocking the filter screen on the filter cartridge 493 can be peeled off, thereby achieving the purpose of timely eliminating the blockage fault and avoiding affecting the operation of the washing machine.

[0110] Embodiment 3

[0111] like Figures 3 to 5 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that the spiral structure 495 is directly fixed on the inner wall of the filter cartridge 493 , and when the motor 491 drives the filter cartridge 493 to rotate, the spiral structure 495 always rotates synchronously with the filter cartridge 493 .

[0112] Specifically, in this embodiment, the outer profile of the spiral structure 495 is fixedly connected to the inner wall of the filter cartridge 493, and the center of the spiral structure 495 is hollow to form a water flow channel. Compared with the structure in the first embodiment, since the center of the spiral structure 495 adopts a shaftless design, the overall weight can be greatly reduced, thereby reducing the resistance when the motor 491 drives the filter cartridge 493 to rotate in the first direction.

[0113] Furthermore, the spiral structure 495 can be made of a plastic material, such as nylon, to further reduce the weight, and can also improve the strength and high temperature resistance, so that it can withstand washing water heated to a higher temperature.

[0114] In this embodiment, the spiral structure 495 is fixed to the filter cartridge 493 as a whole, and the two rotate together. The rotation direction of the spiral structure 495 is set as follows: when the motor 491 drives the filter cartridge 493 and the spiral structure 495 to rotate together in the second direction, the spiral structure 495 can drive the water in the filter cartridge 493 to be discharged outward from the clean water outlet 4922; and when the motor 491 drives the filter cartridge 493 and the spiral structure 495 to rotate together in the first direction, the spiral structure 495 pumps water into the filter cartridge 493.

[0115] Thus, during normal filtration, when the motor 491 drives the filter cartridge 493 to rotate in the second direction, the wire scraps attached to the outer wall of the filter cartridge 493 can be peeled off, and the rotation of the spiral structure 495 can also be used to provide auxiliary driving force for the discharge of clean water. In this way, the inside of the filter cartridge 493 is always in a low water level state, which is conducive to the water outside the filter cartridge 493 passing through the filter screen and entering the inside of the filter cartridge 493, thereby improving the filtration efficiency.

[0116] In a further solution of this embodiment, the spiral structure 495 is arranged on the inner wall of the filter cartridge 493 near the clean water outlet 4922. The water storage pipe 463 is connected to the clean water outlet 4922, and the spiral structure 495 is as close to the clean water outlet 4922 as possible, so that the accumulated water in the water storage pipe 463 can be pumped into the filter cartridge 493 more easily.

[0117] In this embodiment, other structures of the washing device are the same as those in the above-mentioned embodiment 1 and will not be described in detail.

[0118] When the washing equipment performs circulation filtration, the three-way valve 470 connects the clean water outlet pipe 460 and the inner circulation pipe 462, and the control valve 480 remains closed. The water pump 420 is controlled to run intermittently or continuously, and the washing water can be pumped to the lint separation device 490 for filtration. The filtered water flows from the clean water outlet 4922 to the clean water outlet pipe 460, and flows into the water storage drum 200 again along the inner circulation pipe 462.

[0119] When the washing machine is draining, the three-way valve 470 connects the clean water outlet pipe 460 and the external drain pipe 461, and the control valve 480 is also kept closed. The water pump 420 is started to pump the washing water in the water storage drum 200 to the lint separation device 490 for filtration, and the filtered clean water flows from the clean water outlet pipe 460 to the external drain pipe 461, and finally discharged to the outside of the washing machine along the external drain pipe 461.

[0120] During the above-mentioned circulation filtration or drainage filtration process, the motor 491 is continuously or intermittently started to drive the filter cartridge 493 to rotate in the second direction, so that the wire scraps adhering to the outer wall of the filter cartridge 493 are thrown to the edge of the housing 492 under the action of centrifugal force. At the same time, the spiral structure 495 inside the filter cartridge 493 can help the clean water to be discharged outward, and keep the low water level inside the filter cartridge 493.

[0121] When the filter screen on the filter cartridge 493 is clogged, the water pump 420 is controlled to be turned off, and then the motor 491 is controlled to reverse, that is, to rotate in the first direction, thereby driving the filter cartridge 493 and the spiral structure 495 to change the rotation direction. At this time, since the rotation direction of the filter cartridge 493 is changed, the wire scraps adhered thereto are shaken from another direction, and part of the wire scraps that could not be peeled off before are more likely to fall off from the filter cartridge 493. At the same time, the clean water retained in the water storage pipe 463 can be drawn into the filter cartridge 493 under the rotation of the spiral structure 495, and the water flows from the inside of the filter cartridge 493 to the outside for backwashing and cleaning, and the stubbornly adhered wire scraps are backwashed and peeled off from the inside to the outside, effectively removing the blocked state of the filter cartridge 493.

[0122] When the washing program runs to the dehydration stage, or the dehydration stage is close to the end, at this time, there is almost no water at the water pump 420 and it is in a closed state, and the control valve 480 is opened to conduct the waste water return pipe 440, and the accumulated water remaining in the wire scrap separation device 490 can carry the wire scraps and other filtered impurities out of the waste water outlet 4923, and enter the wire scrap collector 430 along the waste water return pipe 440 under the action of gravity. After the waste water mixed with wire scraps is filtered in the wire scrap collector 430, the filtered impurities in the water, including micro wire scraps, etc., can be collected inside the wire scrap collector 430, and the water without wire scraps after filtration flows into the water pump 420.

[0123] In the above process, the motor 491 can also be controlled to rotate in the first direction. On the one hand, the filter cartridge 493 rotates with the motor 491, and the residual wire scraps on its outer wall can be thrown off and discharged with the water flow, thereby avoiding residual wire scraps on the filter cartridge 493. On the other hand, the spiral structure 495 rotates simultaneously with the filter cartridge 493 to extract the accumulated water remaining in the water storage pipe 463, and can also flush the residual wire scraps in the housing 492, ensuring that the wire scraps are fully discharged with the water flow.

[0124] In this embodiment, the spiral structure 495 is fixed inside the filter cartridge 493, and the spiral structure 495 does not need to be directly transmitted to the motor 491, so the structure is simpler, and the shaft design is eliminated, which can also reduce the weight and reduce the burden on the motor 491. Since the spiral structure 495 also rotates with the filter cartridge 493 during normal filtration, it can generate a force that helps the clean water to be discharged, which is beneficial to improving the filtration efficiency.

[0125] Embodiment 4

[0126] like Figures 3 to 5 As shown, this embodiment is a further limitation of the above-mentioned embodiment three, and the washing equipment also includes a blockage detection device, through which the washing equipment can obtain the working status of the wire scrap separation device 490 to determine whether a blockage failure occurs.

[0127] Similar to the above-mentioned second embodiment, the washing equipment of this embodiment can control the motor 491 of the wire chip separation device 490 according to the detection result fed back by the blockage detection device, so as to backwash and clean the filter cartridge 493 when a blockage failure occurs in the wire chip separation device 490.

[0128] In this embodiment, the blockage detection device also utilizes the characteristic that the pressure inside the housing 492 increases when the filter cartridge 493 is blocked to detect blockage, and can send a blockage fault signal when the pressure inside the housing 492 is greater than the pressure threshold. The difference is that the blockage detection device of this embodiment does not directly detect the pressure value inside the housing 492, but adopts the following technical solution.

[0129] Specifically, in this embodiment, the housing 492 is provided with an opening, and the opening is covered with an elastic film 640 that can be elastically deformed. The clogging detection device includes a detection end 620 fixedly disposed in the washing device, and a detected end 650 disposed on the elastic film 640 .

[0130] With the above structure, the elastic membrane 640 will deform with the pressure change inside the housing 492, and then drive the detected end 650 to move closer to or away from the detection end 620. When the distance between the detection end 620 and the detected end 650 is less than the preset distance, the detection end 620 can be triggered to send a blocking fault signal.

[0131] More specifically, the detected end 650 is disposed in the middle region of the elastic membrane 640, and the central axis of the opening passes through the location of the detected end 650. The projection of the detecting end 620 on the elastic membrane 640 along the direction parallel to the central axis of the opening falls on the detected end 650. In this way, when the elastic membrane 640 is deformed, the detected end 650 can be driven to move along the line connecting the detecting end 620 and the detected end 650, thereby preventing the detected end 650 from being deviated in its movement direction and failing to trigger the detecting end 620.

[0132] As a specific solution, the opening is provided at the top of the housing 492, and a connecting tube 630 is extended upward from the outer circumference of the opening, and the top of the connecting tube 630 is covered with an elastic film 640. The elastic film 640 can be an elastic rubber film, and a magnet is attached to the center thereof as a detected end 650. A reed switch is provided at the top of the inner side of the housing 100 at a position just above the magnet as a detection end 620, and the reed switch is connected to the main control module 610 via a power line. The blocking fault signal is an electrical signal connected by the reed switch.

[0133] When the filter screen on the filter cartridge 493 is not clogged, see Figure 3 and Figure 4 , the elastic membrane 640 is in its original state and does not bulge upward, so that the distance between the magnet at the detection end 650 and the reed switch at the detection end 620 is large, and the reed switch is in a disconnected state. If a blockage occurs, see Figure 5 , the elastic membrane 640 bulges upward under the pressure, driving the magnet at the detected end 650 to rise and approach the reed switch at the detection end 620, and even contact the reed switch. At this time, the reed switch is connected by the magnetic force of the magnet, and the main control module 610 receives the electrical signal of the reed switch being connected, which is the blocking fault signal, and determines that a blocking fault has occurred and needs to be intervened.

[0134] Furthermore, in this embodiment, when the washing device receives the above-mentioned blockage fault signal, the water pump 420 is controlled to stop working, and then the motor 491 is controlled to drive the filter cartridge 493 and the spiral structure 495 to rotate together in the first direction to achieve backwash cleaning of the filter cartridge 493. When the blockage fault is eliminated, the pressure inside the housing 492 can be restored to the normal range, and the elastic membrane 640 can restore its original state under its own elastic force, so that the magnet at the detected end 650 is separated from the reed switch at the detection end 620, and the reed switch can be restored to the disconnected state.

[0135] In this embodiment, the pressure change inside the wire scrap separation device 490 is converted into a deformation process of the elastic membrane 640. The blockage detection device can be used to detect the deformation degree of the elastic membrane 640, and then determine whether the wire scrap separation device 490 has a blockage failure. The structure is simple and the blockage judgment is accurate.

[0136] Embodiment 5

[0137] like Figure 6 As shown, the difference between this embodiment and the above-mentioned embodiment 2 is that: the washing equipment does not separately set up a blockage detection device, but determines whether the wire scrap separation device 490 has a blockage failure based on the working parameters of the water pump 420.

[0138] Specifically, Figure 1 and Figure 2Compared with the washing device shown in the figure, the washing device of this embodiment does not need to set the pressure sensor 660 on the shell 492 of the wire chip separation device 490.

[0139] In this embodiment, the water pump 420 is provided with a drainage motor for driving the water pump 420 to generate power for extracting washing water. In the case where the drainage motor can be accurately monitored, it is not necessary to additionally provide a blockage detection device, but it is possible to determine whether the lint separation device 490 is blocked by detecting the working parameters of the drainage motor.

[0140] It should be noted that, in this embodiment, the working parameters of the water pump 420 are also the working parameters of the drainage motor in the water pump 420 .

[0141] It is understandable that when the filter screen on the filter cartridge 493 is clogged with wire scraps, the washing water entering the wire scrap separation device 490 cannot pass through the filter cartridge 493 to be discharged, which will increase the resistance of the washing water to continue to enter the housing 492, causing the resistance of the water pump 420 to pump the washing water to increase, and the rotation resistance of the drain motor will also increase accordingly. At this time, the working current of the drain motor will increase accordingly, and the working voltage of the drain motor is basically constant, so the power consumed, that is, the real-time working power of the drain motor will also increase.

[0142] Therefore, the washing machine can obtain information on whether a blockage failure occurs in the lint separation device 490 by detecting the working current or working power of the drainage motor in the water pump 420.

[0143] As a specific implementation of this embodiment, the washing equipment receives a signal that the working current of the water pump 420 is greater than a preset value, controls the water pump 420 to stop running, and the motor 491 of the wire chip separation device 490 rotates in the first direction, driving the spiral structure 495 to rotate to pump water into the filter cartridge 493, and backflushing and cleaning the filter cartridge 493.

[0144] Specifically, during the operation of the water pump 420, the washing device continuously or intermittently obtains the working current of the water pump 420 and compares it with a preset value of the working current. When the obtained working current is greater than the preset value, it is determined that a blockage failure occurs in the lint separation device 490. At this time, the washing device controls the water pump 420 to stop working, and then controls the motor 491 to drive the filter cartridge 493 and the spiral structure 495 to rotate in the first direction, so as to achieve backwash cleaning of the filter cartridge 493.

[0145] The preset value of the working current can be obtained through preliminary tests. When the lint separation device 490 can continuously receive washing water pumped by the water pump 420 and discharge clean water from the clean water outlet 4922, the real-time working current of the water pump 420 should not be higher than the preset value of the working current.

[0146] As another specific implementation of this embodiment, the washing equipment receives a signal that the working power of the water pump 420 is greater than a preset value, controls the motor 491 of the yarn chip separation device 490 to rotate in a first direction, drives the spiral structure 495 to rotate to pump water into the filter cartridge 493, and backflushes the filter cartridge 493 for cleaning.

[0147] Specifically, during the operation of the water pump 420, the washing device continuously or intermittently obtains the working power of the water pump 420 and compares it with a preset value of the working power. When the obtained working power is greater than the preset value, it is determined that a blockage failure occurs in the lint separation device 490. At this time, the washing device controls the water pump 420 to stop working, and then controls the motor 491 to drive the filter cartridge 493 and the spiral structure 495 to rotate in the first direction to achieve backwash cleaning of the filter cartridge 493.

[0148] The preset value of the working power can be obtained through preliminary tests. When the lint separation device 490 can continuously receive washing water pumped by the water pump 420 and discharge clean water from the clean water outlet 4922, the real-time working power of the water pump 420 should not be higher than the preset value of the working power.

[0149] It is understandable that the washing device of this embodiment can also be used as follows Figures 3 to 5 The structure of the washing device shown in the figure does not require an opening to be provided at the top of the shell 492, nor does it require a clogging detection device including a detection end 620 and a detected end 650 to be provided.

[0150] In this embodiment, the washing machine determines whether the lint separation device 490 is blocked according to the working parameters of the water pump 420, eliminating the trouble of setting up an additional blockage detection device, thereby achieving the purpose of monitoring blockage failures and simplifying the internal structure of the washing machine.

[0151] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A filtering system for a washing device, characterized in that: It comprises a wire scrap separation device and a water storage chamber connected to a clean water outlet of the wire scrap separation device; The wire scrap separation device comprises: A shell body, on which a water inlet and the purified water outlet are arranged; A filter cartridge is rotatably disposed inside the housing, the water inlet is communicated with the outer space of the filter cartridge, and the clean water outlet is communicated with the inner space of the filter cartridge; A driving mechanism, connected to the filter cartridge, for driving the filter cartridge to rotate; The spiral structure is transmission-connected with the driving mechanism and can rotate in a first direction with the driving mechanism to draw the accumulated water in the water storage chamber from the clean water outlet to the inside of the filter cartridge, so that the water flows through the filter cartridge from the inside to the outside to achieve flushing.

2. The filtering system of the washing equipment according to claim 1, characterized in that: The wire scrap separation device further comprises a connecting shaft coaxially arranged with the filter cartridge, and the spiral structure is fixed on the connecting shaft; One end of the connecting shaft is connected to the driving mechanism via a clutch structure. When the driving mechanism rotates in a first direction, the connecting shaft rotates synchronously with the driving mechanism, driving the spiral structure to rotate and pump water. When the driving mechanism rotates in a second direction opposite to the first direction, the connecting shaft does not rotate.

3. The filtering system of the washing equipment according to claim 2, characterized in that: The other end of the connecting shaft extends from the purified water outlet to the outside of the shell, and the spiral structure is arranged at the other end of the connecting shaft.

4. The filtration system according to claim 3, characterized in that: An end stop is arranged at the other end of the connecting shaft. The end stop is a plate-like structure perpendicular to the axis of the connecting shaft. The outer periphery of the end stop contacts the inner wall of the water storage chamber and is used to support the connecting shaft. A water flow structure is arranged on the end stop.

5. The filtering system of the washing equipment according to claim 1, characterized in that: The spiral structure is fixed on the inner wall of the filter cartridge; the driving mechanism drives the filter cartridge to rotate, and the spiral structure rotates synchronously with the filter cartridge.

6. A washing device, characterized in that: A filter system comprising the washing equipment according to any one of claims 1 to 5.

7. The washing device according to claim 6, characterized in that: The device also includes a blockage detection device, which sends a blockage fault signal when the internal pressure of the shell of the wire chip separation device is greater than a pressure threshold.

8. The washing device according to claim 7, characterized in that: The clogging detection device includes a pressure sensor disposed on the housing; Alternatively, an opening is provided on the shell, and the opening is covered with an elastic membrane; the blockage detection device includes a detection end fixedly arranged in the washing device, and a detected end arranged on the elastic membrane; the elastic membrane deforms as the pressure inside the shell changes, driving the detected end to approach / move away from the detection end.

9. A method for controlling a washing device according to any one of claims 6 to 8, characterized in that: The driving mechanism is controlled to rotate in a first direction, thereby driving the spiral structure to rotate, and pumping water into the filter cartridge for backwash cleaning.

10. The control method of washing equipment according to claim 9, characterized in that: The washing device receives a blockage fault signal sent by the blockage detection device and controls the driving mechanism to rotate in a first direction; Alternatively, the washing device further comprises a water pump for driving water to flow toward the lint separation device for filtering; the washing device receives a signal indicating that the working current / working power of the water pump is greater than a preset value, and controls the driving mechanism to rotate in a first direction.

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