Filtering system of washing equipment and washing equipment

Abstract

The invention belongs to the technical field of washing equipment, and discloses a filtering system of washing equipment and the washing equipment, and the filtering system comprises a thread and scrap separating device which is used for filtering water flow carrying filtered impurities and is provided with a water inlet; one end of the water supply pipe is connected to the water inlet, and water flow carrying filtered impurities flows along the water supply pipe and enters the thread and scrap separating device; and the ventilation structure is used for feeding air into the position, close to the water inlet, in the water feeding pipe so as to generate bubbles. According to the thread and scrap separating device, by arranging the ventilation structure, air is introduced into water flow in the water supply pipe to be mixed with flowing water, so that a large number of bubbles are generated, the viscosity of the water can be reduced, and the water flow can pass through the filtering structure in the thread and scrap separating device more easily; meanwhile, certain impact force can be generated when the bubbles are broken, so that filtering impurities such as thread scraps adhered to a filtering structure in the thread scrap separating device can be stripped easily.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and in particular relates to a filtering system for washing equipment and washing equipment. 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 deficiencies of the prior art and provide a filtering system and washing equipment for washing equipment, which can mix air to generate bubbles before the water flow enters the wire scrap separation device, thereby preventing the wire scrap separation device from being blocked by micro-wire scraps and causing malfunctions.

[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 a washing device, comprising:

[0009] A wire scrap separation device is used to filter the water flow carrying the filtered impurities, and a water inlet is arranged on the device;

[0010] A water supply pipe, one end of which is connected to the water inlet, and a water flow carrying filtered impurities flows along the water supply pipe into the wire scrap separation device;

[0011] The ventilation structure is used to send air into the water supply pipe near the water inlet to generate bubbles.

[0012] Furthermore, the ventilation structure includes an air duct, an outlet end of which is located inside the water delivery pipe near the water inlet, and an inlet end extends from the water delivery pipe to communicate with the external space.

[0013] Furthermore, the air outlet direction of the outlet end of the air duct is parallel to the axial direction of the water delivery pipe.

[0014] Further, the air duct comprises an air inlet section and an air outlet section connected to each other, and the inlet end is located on the air inlet section;

[0015] The air outlet section is arranged inside the water supply pipe, and extends in a direction parallel to the axis of the water supply pipe to a position close to the water inlet of the wire scrap separation device, and the extended end forms the outlet end of the air duct;

[0016] Preferably, the air outlet section is coaxially arranged with the water supply pipe.

[0017] Furthermore, the air intake section of the air duct passes through the pipe wall of the water delivery pipe and extends to the external space, and the air intake section is sealed and connected to the pipe wall of the water delivery pipe;

[0018] Preferably, the angle between the air inlet section and the air outlet section is greater than 90°.

[0019] Furthermore, the water supply pipe has a horizontal extension section, and the horizontal extension section is connected to the water inlet of the wire chip separation device; the air outlet section of the air duct is located in the horizontal extension section and is extended in the horizontal direction.

[0020] Furthermore, a non-return structure for one-way conduction from inside to outside is provided at the outlet end of the air duct.

[0021] Further, the non-return structure comprises a valve plate rotatably mounted on the outlet end, and the area of ​​the valve plate is larger than the opening area of ​​the outlet end of the air duct;

[0022] The upper part of the valve plate is hinged to the air duct, and the valve plate can be turned upward to open the outlet end of the air duct; the valve plate is turned downward to cover the outlet end to achieve blocking.

[0023] Furthermore, it also includes a water pump, the other end of the water supply pipe is connected to the water outlet end of the water pump, and the water pump drives the water flow carrying the filtered impurities along the water supply pipe into the wire scrap separation device;

[0024] The wire scrap separation device is also provided with a wastewater outlet, and the filtered impurities are discharged from the wastewater outlet along with the water flow; the filtration system also includes a wire scrap collector connected to the wastewater outlet, which is used to receive the wastewater mixed with the filtered impurities discharged from the wire scrap separation device; the wire scrap collector is connected to the water pump, and the wastewater is filtered and discharged into the water pump;

[0025] Preferably, the lint collector is arranged at a position lower than the height of the wastewater outlet, and the wastewater outlet is connected to the lint collector through a wastewater return pipe that at least partially extends downward.

[0026] A washing device comprises the filtering system of the washing device described above.

[0027] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0028] In the present invention, a large number of bubbles can be generated by introducing air into the water flow in the water delivery pipe and mixing with the flowing water, thereby reducing the viscosity of the water and making it easier for the water flow to pass through the filter structure in the wire dust separation device. At the same time, the impact force generated when the bubbles burst can also be used to promote the peeling of filter impurities such as wire dust adhering to the filter structure in the wire dust separation device, thereby preventing or at least delaying the occurrence of blockage failures in the wire dust separation device.

[0029] In the present invention, an air duct connected to the outside is used as a ventilation structure. When water flows through the water delivery pipe, low pressure is generated at the outlet end of the air duct located inside the water delivery pipe, so that air is sucked into the water delivery pipe through the air duct and mixed with the flowing water to generate a large number of bubbles. There is no need to set up an air pump to pump in air, and air can be introduced through the flow of water, which saves costs.

[0030] In the present invention, a one-way non-return structure is provided at the outlet end of the air duct, which does not affect the normal entry of air and can also prevent water from entering the air duct, especially when a blockage failure occurs in the wire chip separation device, water leakage through the air duct can be avoided.

[0031] 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

[0032] 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:

[0033] Figure 1 is a schematic structural diagram of a washing device in an embodiment of the present invention;

[0034] Figure 2 The present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0035] Figure 3 Schematic diagram of a non-return structure blocking an outlet end of an air duct according to an embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the non-return structure opening the outlet end of the air duct in an embodiment of the present invention.

[0037] In the figure: 100, casing; 200, water container; 300, machine door; 410, water pipe; 420, water pump; 430, lint collector; 431, connecting pipe; 440, waste water return pipe; 450, water supply pipe; 451, horizontal extension section; 460, clean water outlet pipe; 461, external drain pipe; 462, internal circulation pipe; 470, three-way valve; 480, control valve; 490, lint separation device; 491, motor; 492, casing; 4921, water inlet; 4922, clean water outlet; 4923, waste water outlet; 493, filter; 500, air pipe; 510, air inlet section; 520, air outlet section; 530, valve plate.

[0038] 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

[0039] 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.

[0040] 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.

[0041] 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.

[0042] like Figures 1 to 4 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.

[0043] 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.

[0044] 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 drain pipe 461 and an internal circulation pipe 462.

[0045] 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 for circulating filtration during washing.

[0046] 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.

[0047] Furthermore, the wire scrap separation device 490 includes a cylindrical housing 492, a motor 491 fixed to the outside of the housing 492, and a cylindrical filter 493 connected to the output shaft of the motor 491 and rotatably mounted inside the housing 492. The two ends of the filter 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 493 form two spaces, and the water inlet 4921 is arranged on the housing 492, and communicates with the space surrounded by the outside of the housing 492 and the filter 493. The water filtered by the filter 493 enters the cylindrical space inside the filter 493, and the end of the housing 492 where the motor 491 is not installed is provided with a circular opening at the center of the circle as a clean water outlet 4922, and the diameter of the clean water outlet 4922 is less than or equal to the diameter of the filter 493, and the filtered water can flow out from the clean water outlet 4922.

[0048] It is understandable that the filtering accuracy of the filter 493 needs to be sufficient to intercept the micro-wires carried in the water flow.

[0049] 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 runs intermittently or continuously to pump the washing water in the water drum 200 to the lint separation device 490 and enter the space between the housing 492 and the filter 493. After the lint or other filtered impurities in the washing water are filtered by the filter 493, they enter the space inside the filter 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 drum 200 again. At the same time, the motor 491 is started to drive the filter 493 to rotate, and the lint blocked by the filter 493 and adhering to the filter 493 is thrown to the edge of the housing 492 under the action of centrifugal force, so that the filter 493 remains unobstructed.

[0050] 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.

[0051] 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.

[0052] In a further solution of this embodiment, 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.

[0053] 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 screen 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 can be a two-way solenoid valve. The end of the wastewater return pipe 440 is connected to the wire scrap collector 430, which can receive the wastewater mixed with filtered impurities discharged by the wire scrap separation device 490.

[0054] 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 493 to achieve filtration, and the inflowing water can also play a certain flushing effect on the filter 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.

[0055] As a specific implementation, the water inlet 4921, the clean water outlet 4922 and the waste water outlet 4923 are all arranged on the end wall of the housing 492 at the end where the motor 491 is not installed. However, it can be understood that the water inlet 4921 and the waste water outlet 4923 can also be arranged at other positions, as long as the wire scraps in the housing 492 can be fully discharged with the water flow through the waste water outlet 4923.

[0056] In this embodiment, the lint collector 430 is disposed at a position lower than the height of the wastewater outlet 4923 , and the wastewater return pipe 440 at least partially extends downward, thereby connecting the wastewater outlet 4923 and the lint collector 430 .

[0057] 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.

[0058] 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.

[0059] 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 493 in the wire dust separation device 490. That is, the filtering aperture of the internal filtering structure of the wire dust collector 430 is not larger than the filtering aperture of the filter screen 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.

[0060] 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.

[0061] However, in order to filter the micro-thread chips in the water, the pore size on the filter 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 493 is easily covered or blocked by thread chips, which makes it impossible to realize the circulation 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 493 to increase the centrifugal force, thereby preventing the filter 493 from being blocked. In addition, due to the limitation of operating noise, it is not suitable to increase the speed of the motor 491 to increase the centrifugal force, and excessive centrifugal force will also throw the water away from the filter 493, which in turn prevents the drainage from being unobstructed.

[0062] In order to solve the problem that the filter screen 493 is easily blocked, the present embodiment further adopts the following technical solution.

[0063] The filtration system of the washing equipment in this embodiment further includes a ventilation structure, which can supply air into the water supply pipe 450 near the water inlet 4921 of the lint separation device 490, thereby mixing with the water flow in the water supply pipe 450 to generate bubbles.

[0064] By setting the ventilation structure, the washing water entering the wire scrap separation device 490 is mixed with bubbles, which is equivalent to reducing the density of the washing water. At the same time, the viscosity of the washing water is also reduced, so that it is easier to pass through the extremely small aperture on the filter 493, thereby reducing the probability that the washing water cannot pass through the filter 493 and cannot be filtered. On the other hand, the bubbles in the water will burst when passing through the filter 493. The bursting process of the bubbles can generate a certain impact force, which helps to peel off the wire scraps adhering to the filter 493, thereby reducing the centrifugal force required to peel off the wire scraps on the filter 493, and also helps to prevent the filter 493 from being quickly blocked by wire scraps.

[0065] As a specific solution of this embodiment, the ventilation structure includes an air duct 500. The outlet end of the air duct 500 is located inside the water supply pipe 450 near the water inlet 4921, and the inlet end thereof extends from the water supply pipe 450 and communicates with the external space.

[0066] Preferably, the air outlet direction of the outlet end of the air duct 500 is parallel to the axial direction of the water supply pipe 450 at the location thereof. More preferably, the air duct 500 includes an air outlet section 520 located inside the water supply pipe 450, and the air outlet section 520 extends in a direction parallel to the axial direction of the water supply pipe 450 to a position close to the water inlet 4921 of the wire scrap separation device 490, and the extended end forms the outlet end of the air duct 500.

[0067] The filtration system of the washing equipment has the above structure. When the water pump 420 works and pumps the washing water along the water supply pipe 450 to the wire scrap separation device 490, the water flows in the water supply pipe 450 and generates low pressure at the outlet end of the air duct 500. Then, under the action of atmospheric pressure, air enters from the inlet end of the air duct 500 and is continuously introduced into the water supply pipe 450 through the air duct 500, mixed with the flowing water, and generates a large number of bubbles. In a preferred embodiment, the air outlet section 520 is coaxially arranged with the water supply pipe 450, and the effect of introducing air by flowing water is better.

[0068] An air duct 500 is used as a ventilation structure, with one end located inside the water supply pipe 450 and the other end extending out of the water supply pipe 450 to communicate with the external atmosphere. When water flows in the water supply pipe 450, air can be automatically sucked in along the air duct 500 to generate bubbles. There is no need to set up an air pump that requires additional drive. The structure is simple and effective, saving costs.

[0069] Furthermore, in the present embodiment, the air duct 500 further includes an air inlet section 510 connected to the air outlet section 520 , and the inlet end of the air duct 500 is located on the air inlet section 510 .

[0070] Specifically, the air intake section 510 of the air duct 500 passes through the wall of the water delivery pipe 450 and extends to the external space of the water delivery pipe 450, thereby communicating with the external atmosphere. The air intake section 510 is sealed to the wall of the water delivery pipe 450 to prevent water leakage at the position where the air intake section 510 passes.

[0071] In a further embodiment, the water supply pipe 450 has a horizontal extension section 451, one end of the horizontal extension section 451 (i.e. Figure 1 The left end in FIG. 4 is connected to the water inlet 4921 of the wire chip separation device 490. The air outlet section 520 of the air duct 500 is located in the horizontal extension section 451 and extends in the horizontal direction.

[0072] As a detailed solution, there is a certain angle between the air inlet section 510 and the air outlet section 520. The air inlet section 510 passes through the top of the horizontal extension section 451 of the water supply pipe 450 and is sealed at the passing position.

[0073] In a specific solution, the angle between the air inlet section and the air outlet section is greater than 90°. On the one hand, there is no large-angle turn when the airflow passes through the air duct, so it is easier to introduce air into the water flow through the air duct. In this way, it is helpful to increase the air flow introduced into the water flow through the air duct, ensuring that the amount of bubbles generated is sufficient to prevent the filter from being blocked. On the other hand, the angle between the part of the air inlet section located in the horizontal extension section of the water supply pipe and the water flow direction is small, and thus the resistance to the water flow is also small.

[0074] In another specific scheme, Figure 1 As shown, the air inlet section 510 and the air outlet section 520 are perpendicular to each other, which makes processing easier.

[0075] Through the above structure, the outlet end of the air duct 500 can be made closer to the water inlet 4921 of the lint separation device 490, while controlling the overall length of the air duct 500 not to be too long. In this way, it is possible to prevent the bubbles generated at the outlet end of the air duct 500 from bursting in advance before entering the lint separation device 490, and ensure that the bubbles enter the housing 492 and then burst when passing through the filter 493, thereby ensuring the effect of the bubbles.

[0076] In this embodiment, the water pump 420 is arranged at the bottom of the housing 100, which is lower than the installation height of the water cylinder 200. The lint separation device 490 is arranged above the water cylinder 200, that is, higher than the installation height of the water pump 420. The water pump 420 is arranged in the housing 100 near the front side where the door 300 is located. The water supply pipe 450 first extends vertically upward from the water outlet end of the water pump 420 to a height higher than the water cylinder 200, and the extension end is flush with the height of the water inlet 4921 of the lint separation device 490, and then connected to the water inlet 4921 through the horizontal extension section 451 extending horizontally to the rear. The air duct 500 is arranged at a position close to the rear end of the horizontal extension section 451, so as to introduce air into the water flow in the horizontal extension section 451 for mixing, which can generate a large number of bubbles in the water, and the position where the bubbles are generated is close to the water inlet 4921 of the lint separation device 490, which can reduce the problem of premature bursting of bubbles before they take effect.

[0077] In a further solution of this embodiment, a non-return structure that conducts one-way from inside to outside is provided at the outlet end of the air duct 500. When water continues to flow through the water supply pipe 450, the non-return structure can open the outlet end of the air duct 500, so that external air can continuously enter along the air duct 500 and mix with the water flow to generate bubbles. Once the wire scrap separation device 490 is blocked, the non-return mechanism can prevent water from entering from the outlet end of the air duct 500. Therefore, even if the water pump 420 remains in working condition, water leakage will not occur through the air duct 500.

[0078] As a specific solution of this embodiment, the non-return structure includes a valve plate 530 rotatably mounted on the outlet end of the air duct 500 .

[0079] Specifically, the area of ​​the valve plate 530 is larger than the opening area of ​​the outlet end of the air duct 500, and the top of the valve plate 530 is hinged to the top of the end of the outlet section 520 of the air duct 500. When water continues to flow through the water supply pipe 450, the water pushes the outer peripheral area of ​​the valve plate 530, and at the same time, a vortex is generated on the side of the valve plate 530 facing away from the air duct 500 to form a negative pressure. The thrust of the water flow and the negative pressure work together to make the valve plate 530 flip upward to open the outlet end of the air duct 500.

[0080] When air is not introduced into the water flow through the air duct 500, the valve plate 530 can be turned downward to cover the outlet end of the air duct 500 to achieve blocking. Since the area of ​​the valve plate 530 is larger, the outlet end of the air duct 500 stops against the surface of the valve plate 530, which can prevent the valve plate 530 from rotating inside the air duct 500. In particular, when the wire chip separation device 490 is blocked, the water pressure can also press the valve plate 530 against the outlet end of the air duct 500 to ensure the sealing effect, while preventing the water flow from entering the air duct 500.

[0081] Through the above structure, when the washing water enters the lint separation device 490 along the water supply pipe 450, the air duct 500 can normally introduce air, and when a blockage failure occurs in the lint separation device 490, the outlet end of the air duct 500 can be automatically sealed to prevent water leakage through the air duct 500, thereby ensuring the safe operation of the washing equipment.

[0082] It is understandable that other one-way valve structures capable of achieving one-way conduction at the outlet end of the air duct 500 can also be applied to this embodiment.

[0083] The washing equipment of this embodiment has the above-mentioned structure. When the water pump 420 is working and the washing water in the water drum 200 is sent into the lint separation device 490 along the water delivery pipe 450, air can be continuously introduced through the air duct 500 to mix with the water flow, thereby generating a large number of bubbles in the water, making it easier for the washing water to pass through the filter 493 in the lint separation device 490, and at the same time helping the lint to peel off from the filter 493, avoiding blockage of the lint separation device 490.

[0084] In this embodiment, the clean water outlet pipe 460 of the filtration system first extends horizontally to the right for a distance from the clean water outlet 4922 of the wire chip separation device 490 until it reaches the top of the water cylinder 200, and then extends vertically downward to be connected to the three-way valve 470 located above the water cylinder 200.

[0085] As a specific solution, the inner circulation pipe 462 extends vertically downward from the three-way valve 470 and is connected to the wall of the water cylinder 200. The outer drainage pipe 461 extends horizontally backward from the three-way valve 470, extends to the outside of the casing 100, and then extends downward, and can be inserted into the floor drain to achieve drainage.

[0086] As another specific solution, the outlet end of the inner circulation pipe can also be connected to a window pad at the mouth of the water storage drum, and water can be returned to the water storage drum through the window pad.

[0087] The wastewater return pipe 440 extends horizontally to the right from the wastewater outlet 4923 of the lint separation device 490, and then extends downward from the front side of the tube mouth of the water storage cylinder 200, and the lower end is connected to the lint collector 430. The control valve 480 is set on the horizontally extending part of the wastewater return pipe 440, as close as possible to the lint separation device 490, to prevent a large amount of washing water from flowing out of the wastewater outlet 4923 during the filtration process.

[0088] 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.

[0089] The working process of the washing device provided in this embodiment is specifically as follows.

[0090] After the washing equipment 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 supply pipe 450 to the lint separation device 490 for filtration. At the same time, the air duct 500 introduces air into the water supply pipe 450, which mixes with the water flow to generate bubbles, which can prevent the filter 493 in the lint separation device 490 from being blocked, ensuring the smooth filtration process. 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. During the filtering process, the motor 491 starts, driving the filter 493 to rotate, and the wire scraps blocked by the filter 493 and stuck on the filter 493 are thrown to the edge of the shell 492 under the action of centrifugal force, further ensuring that the filter 493 remains unobstructed.

[0091] When the main wash and rinse are completed and drainage is required, the three-way valve 470 is controlled to conduct the clean water outlet pipe 460 and the external drainage pipe 461, and then the water pump 420 is started to pump the washing water in the water tank 200 to the wire scrap separation device 490 for filtration. The filtered clean water flows from the clean water outlet pipe 460 to the external drainage pipe 461, and finally is discharged to the outside of the washing device along the external drainage pipe 461. During the drainage and filtration process, the air duct 500 can also continuously introduce air and water to mix, and at the same time cooperate with the operation of the motor 491 to drive the filter 493 to rotate, so that the filter 493 remains unobstructed.

[0092] When the washing program runs to the dehydration stage, or the dehydration stage is close to the end, the water pump 420 is almost dry and 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 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.

[0093] 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.

[0094] By setting an air duct 500 at the front end of the water inlet 4921 of the wire chip separation device 490, air is introduced into the water flow for mixing, thereby generating a large number of bubbles, which is beneficial to keeping the filter 493 unobstructed, thereby ensuring that the washing water entering the wire chip separation device 490 can pass through the filter 493 smoothly, thereby ensuring the circulation filtering effect and the drainage efficiency of the washing equipment.

[0095] 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: include: A wire scrap separation device is used to filter the water flow carrying the filtered impurities, and a water inlet is arranged on the device; A water supply pipe, one end of which is connected to the water inlet, and a water flow carrying filtered impurities flows along the water supply pipe into the wire scrap separation device; The ventilation structure is used to send air into the water supply pipe near the water inlet to generate bubbles.

2. The filtering system of the washing equipment according to claim 1, characterized in that: The ventilation structure comprises an air duct, an outlet end of which is located inside the water delivery pipe and close to the water inlet, and an inlet end extends from the water delivery pipe and communicates with the external space.

3. The filtering system of the washing equipment according to claim 2, characterized in that: The air outlet direction of the outlet end of the air duct is parallel to the axial direction of the water supply pipe.

4. The filtering system of the washing equipment according to claim 3, characterized in that: The air duct comprises an air inlet section and an air outlet section connected to each other, and the inlet end is located on the air inlet section; The air outlet section is arranged inside the water supply pipe, and extends in a direction parallel to the axis of the water supply pipe to a position close to the water inlet of the wire scrap separation device, and the extended end forms the outlet end of the air duct.

5. The filtering system of the washing equipment according to claim 4, characterized in that: The air intake section of the air duct passes through the pipe wall of the water delivery pipe and extends to the external space, and the air intake section is sealed and connected to the pipe wall of the water delivery pipe.

6. The filtering system of the washing equipment according to claim 4, characterized in that: The water supply pipe has a horizontal extension section, and the horizontal extension section is connected to the water inlet of the wire chip separation device; the air outlet section of the air duct is located in the horizontal extension section and extends in the horizontal direction.

7. The filter system of a washing device according to any one of claims 2 to 6, characterized in that: The outlet end of the air duct is provided with a non-return structure for one-way conduction from inside to outside.

8. The filtering system of the washing equipment according to claim 7, characterized in that: The non-return structure comprises a valve plate rotatably mounted on the outlet end, wherein the area of ​​the valve plate is larger than the opening area of ​​the outlet end of the air duct; The upper part of the valve plate is hinged to the air duct, and the valve plate can be turned upward to open the outlet end of the air duct; the valve plate is turned downward to cover the outlet end to achieve blocking.

9. The filter system of a washing device according to any one of claims 1 to 6, characterized in that: It also includes a water pump, the other end of the water delivery pipe is connected to the water outlet of the water pump, and the water pump drives the water flow carrying filtered impurities along the water delivery pipe into the wire scrap separation device; The wire scrap separation device is also provided with a wastewater outlet, through which filtered impurities are discharged along with the water flow; the filtration system also includes a wire scrap collector connected to the wastewater outlet, for receiving wastewater mixed with filtered impurities discharged by the wire scrap separation device; the wire scrap collector is connected to the water pump, and the wastewater is filtered and discharged into the water pump.

10. A washing device, characterized in that: A filter system comprising the washing equipment according to any one of claims 1 to 9.

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