WO2018210313A1 - Lint filtering apparatus and laundry machine - Google Patents

Abstract

A lint filtering apparatus and laundry machine. The lint filtering apparatus comprises a housing (2) and a filter (3) disposed in an inner cavity of the housing (2). The housing (2) is provided with a water inlet (1), a first water outlet (4) and a second water outlet (5). The water inlet (1) is in communication with the first water outlet (4), and the filter (3) is disposed therebetween to form a filtering water path. The water inlet (1) is in direct communication with the second water outlet (4), and a rinsing water path is formed therebetween for rinsing the filter (3). The lint filtering apparatus can filter the lint to recycle wash water and enable self-cleaning of lint, thus eliminating the need of manually cleaning the lint inside the lint filtering apparatus, which is more convenient.

Description

Wire dust filter device and washing machine Technical field

The invention belongs to the technical field of washing machines, and in particular to a wire filtering device and a washing machine.

Background technique

Most of the existing drum washing machines are provided at the front end of the drain pump or the drain valve. The main function is to intercept large foreign objects such as hair in the water and hairpins, paper clips, coins, etc. The main purpose is to prevent large foreign objects from clogging the drain valve or the drain pump. It is difficult to reach the effect of intercepting the wire scraps in the water. The discharge of the wire dust in the water is mainly discharged together with the waste water discharged from the washing machine. During the drainage process of the washing machine, most of the thread will adhere to the clothes and cannot be removed due to the interception of the clothes themselves. The main solution is to increase the number of rinsing and increase the amount of rinsing water, so as to reduce the residue of wire waste, thus inevitably causing waste of time and water resources.

The conventional wire dust filtering device adopts a chemical fiber mesh, and although the intercepting effect is good, it is necessary to manually remove the wire dust filtering device, and the self-cleaning of the filtering device cannot be realized, and the use is inconvenient.

The present invention has been made in view of the above.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a wire filtering device. The wire dust filtering device not only has a good wire cutting effect, but also can be self-cleaning under the action of water washing, and does not need to manually clean the wire chips retained by the wire filtering device, which is convenient and quick, and improves the water circulation of the washing machine. Utilization, saving water resources.

In order to solve the above technical problem, the basic idea of the technical solution of the present invention is: a wire filtering device comprising a casing and a filter net disposed in the inner cavity of the casing, the casing being provided with a water inlet, a first water outlet and a second The water inlet is connected to the first water outlet, and a filter is arranged between the two to form a filtering water path, and the water inlet is directly connected with the second water outlet, and a flushing water path for flushing the filter is formed between the two.

Preferably, the filter net is a two-dimensional structure or a three-dimensional structure, and the filter net is disposed in a part or the whole of the inner cavity of the casing, and the filter surface of the filter mesh intercepting the wire can be washed by the water entering from the water inlet and flowing to the second water outlet. Clean the wire.

Preferably, the filter net divides the inner cavity of the casing into an inner flow passage and an outer flow passage, one end of the inner flow passage is connected with the water inlet, the other end is connected with the second water outlet, and the outer flow passage is connected with the first water outlet.

Preferably, the casing comprises a cylindrical body, the filter mesh is cylindrical, the filter mesh is disposed coaxially with the cylindrical body, and a gap is formed between the outer periphery of the filter mesh and the inner peripheral wall of the cylindrical body, and the filter is filtered. The inner circumference of the net is an internal flow path, and an outer flow path is formed between the outer periphery of the filter and the inner peripheral wall of the cylindrical body.

Preferably, the water inlet is connected to one end of the cylindrical body, the second water outlet is connected to the other end of the cylindrical body and is provided with a drain valve, and the first water outlet is arranged in a circle between the water inlet and the second water outlet. a side wall of the cylindrical body and connected to the circulation pump;

More preferably, the water inlet, the first water outlet and the second water outlet are located on the same side of the cylindrical body.

Preferably, one end of the cylindrical body is open and the other end is sealed, and both ends of the filter net are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided to match the open end of the cylindrical body. The sealing end surface, the second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion are respectively provided with openings corresponding to the water inlet and the second water outlet.

Preferably, the open end of the cylindrical body is provided with a limiting structure, and the sealing end surface of the first fixing portion is provided with a groove for fitting the limiting structure.

Preferably, the filter net has a smooth surface to self-clean the wire chips intercepted by the filter surface by means of water rinsing;

Preferably, the filter mesh is a stainless steel punched mesh or a nylon mesh;

Preferably, the stainless steel punching net is prepared by a stainless steel polishing integral punching process.

Preferably, the stainless steel punched mesh is provided with a Teflon coating on the mesh surface.

The present invention also provides a washing machine having any one of the wire filtering devices as described above.

After adopting the above technical solution, the chip filtering device of the present invention has the following beneficial effects compared with the prior art:

The swarf filtering device can effectively filter the swarf in the water, and can flush the swarf trapped on the surface of the filter to the second water outlet and discharge when the washing machine discharges the waste water, without manually removing the filter for cleaning. Convenient and trouble-free;

The cylindrical filter mesh is coaxially disposed in the cylindrical body of the casing and has a gap between the outer periphery of the filter mesh and the inner peripheral wall of the cylindrical body, and the water to be filtered can be filtered from the periphery of the cylindrical filter. The efficiency of filtering water is higher, the wire is trapped on the inner surface of the filter, the water flows from the water inlet to the second water outlet and flushes the wire, so that the wire is discharged together from the second water outlet, which is convenient and quick, and has no special If necessary, in the process of draining the washing machine after washing, the self-cleaning of the filter net is realized at the same time, water resources are saved, and complicated control settings are not required, and the design is exquisite;

One end of the cylindrical body is open and the other end is sealed, and both ends of the filter net are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided with a sealing end surface matching the open end of the cylindrical body. The second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion respectively have openings corresponding to the water inlet and the second water outlet, so that the filter can be conveniently arranged. Installation and disassembly, no complicated mold development, saving manpower;

The surface of the stainless steel punching net is smooth, the scraps are not easily adsorbed, and the strands trapped on the surface are more easily washed out and discharged along the water flow, completely purifying the self-cleaning of the filter;

The surface of the stainless steel punching net is provided with polytetrafluoroethylene, which further improves the non-adhesive property of the mesh surface, reduces the risk of depositing and fouling of the filter wire by fine wire scraps, and the wire chips trapped on the surface of the filter mesh are more easily washed, and the cleaning effect is more it is good.

The washing machine of the invention is provided with a wire filtering device capable of achieving a self-cleaning effect, which can filter and recycle the washing and rinsing water of the washing machine, thereby improving the utilization of water resources, and the wire filtering device is not blocked It is more reliable and does not require manual cleaning and maintenance. The overall stability of the washing machine is good.

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are intended to be illustrative of the invention. It is apparent that the drawings in the following description are only some embodiments, and other drawings may be obtained from those skilled in the art without departing from the drawings. In the drawing:

1 is a schematic structural view of a wire dust filtering device according to the present invention;

Fig. 2 is a schematic view showing the structure of a wire dust filtering device according to the present invention.

The figure shows: 1, water inlet; 2, housing; 3, filter net; 4, first water outlet; 5, second water outlet.

It is to be understood that the drawings and the written description are not intended to limit the scope of the present invention in any way.

detailed description

The embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Embodiment 1

A wire filtering device comprises a casing 2 and a filter net 3 disposed in the inner cavity of the casing 2. The casing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5, and the water inlet 1 and the first A water outlet 4 is connected, and a filter 3 is arranged between the two to form a filtered water path, and the water inlet 1 and the second water outlet 5 are directly connected, and a flushing water path for flushing the filter 3 is formed therebetween.

The filter net 3 is a two-dimensional structure or a three-dimensional structure. The filter net 3 is disposed in a part or the whole of the inner cavity of the casing 2, and the filter surface of the filter net 3 intercepting the wire can be entered by the water inlet 1 and flows to the second water outlet 5 Rinse the water to clean the thread.

In the present embodiment, the filter 3 has a three-dimensional structure.

The filter 3 divides the inner cavity of the casing 2 into an inner flow passage and an outer flow passage. One end of the inner flow passage is connected to the water inlet 1 and the other end is connected to the second water outlet 5, and the outer flow passage is connected to the first water outlet 4.

The casing 2 includes a cylindrical body, the filter net 3 has a cylindrical shape, and the filter net 3 is disposed coaxially with the cylindrical body and has a gap between the outer periphery of the filter net 3 and the inner peripheral wall of the cylindrical body. The inner circumference of the filter 3 is an internal flow path, and an outer flow path is formed between the outer periphery of the filter 3 and the inner peripheral wall of the cylindrical body.

The water inlet 1 is connected to one end of the cylindrical body, and the second water outlet 5 is connected to the other end of the cylindrical body and is provided with a drain valve. The first water outlet 4 is disposed between the water inlet 1 and the second water outlet 5. a side wall of the cylindrical body and connected to the circulation pump;

Preferably, the water inlet 1, the first water outlet 4, and the second water outlet 5 are located on the same side of the cylindrical body.

One end of the cylindrical body is open and the other end is sealed, and both ends of the filter net 3 are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided with a seal matching the open end of the cylindrical body. The end surface, the second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion are respectively provided with openings that communicate with the water inlet 1 and the second water outlet 5.

The open end of the cylindrical body is provided with a limiting structure, and the sealing end surface of the first fixing portion is provided with a groove for fitting the limiting structure.

The filter screen 3 has a smooth surface to self-clean the wire chips intercepted by the filter surface by means of water rinsing;

The filter net 3 of the embodiment is a stainless steel punching net, and the stainless steel punching net is prepared by a stainless steel polishing integral punching process.

Preferably, the stainless steel punched mesh is provided with a Teflon coating on the mesh surface.

The embodiment also relates to a washing machine provided with the above-described chip filtering device.

The setting of the wire dust filtering device of the washing machine may be:

The housing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5 which are opened and closed at the same time. The water inlet 1 connects the drainage of the inner tub, and the first water outlet 4 transports the drainage filtered by the filter 3 to the drain. The inner tub or the purifying device is recycled, and the filter net 3 forms a filtering surface for trapping the wire at least at the first water outlet 4, and the wire trapped on the filtering surface can be flowed from the water inlet 1 to the water of the second water outlet 5. Rinse to the second water outlet 5 and discharge.

Compared with the prior art, the chip filtering device of the present invention has the following beneficial effects:

The wire scraps in the water can be effectively filtered, and the wire chips trapped on the surface of the filter net 3 can be flushed to the second water outlet 5 and discharged when the washing machine discharges the waste water, and the filter 3 is not manually removed for cleaning, which is convenient and trouble-free;

The cylindrical filter 3 is coaxially disposed in the cylindrical body of the casing 2 and has a gap between the outer periphery of the filter 3 and the inner peripheral wall of the cylindrical body, and the water to be filtered may be from the periphery of the cylindrical filter. At the point of filtration, the efficiency of filtering the water is higher, the wire is trapped on the inner surface of the filter 3, the influent water flows from the water inlet 1 to the second water outlet 5, and the wire is washed, and the wire is discharged together from the second water outlet 5. It is convenient and quick, and in the case of no special need, in the process of draining the washing machine after washing, the self-cleaning of the filter 3 is realized at the same time, water resources are saved, complicated control settings are not required, and the design is exquisite;

One end of the cylindrical body is open and the other end is sealed, and both ends of the filter net 3 are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided with a seal matching the open end of the cylindrical body. The end surface, the second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion are respectively provided with openings corresponding to the water inlet 1 and the second water outlet 5, so that Convenient installation and disassembly of filter 3, no complicated mold development, saving manpower;

The surface of the stainless steel punching net is smooth, the thread is not easy to be adsorbed, and the thread trapped on the surface is more easily washed and discharged along the water flow, and the self-cleaning of the filter 3 is completely realized;

The surface of the stainless steel punching net is provided with polytetrafluoroethylene, which further improves the non-adhesive property of the mesh surface, reduces the risk of depositing scale of the filter wire by fine wire scraps, and the wire chips trapped on the surface of the filter net 3 are more easily washed, and the cleaning effect is better.

The washing machine of the invention is provided with a wire filtering device capable of achieving a self-cleaning effect, which can filter and recycle the washing and rinsing water of the washing machine, thereby improving the utilization of water resources, and the wire filtering device is not blocked It is more reliable and does not require manual cleaning and maintenance. The overall stability of the washing machine is good.

Embodiment 2

The difference between this embodiment and the first embodiment is that the filter net 3 used in the embodiment is different from the filter net 3 of the present embodiment.

A wire filtering device comprises a casing 2 and a filter net 3 disposed in the inner cavity of the casing 2. The casing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5, and the water inlet 1 and the first A water outlet 4 is connected, and a filter 3 is arranged between the two to form a filtered water path, and the water inlet 1 and the second water outlet 5 are directly connected, and a flushing water path for flushing the filter 3 is formed therebetween.

The filter net 3 is a two-dimensional structure or a three-dimensional structure. The filter net 3 is disposed in a part or the whole of the inner cavity of the casing 2, and the filter surface of the filter net 3 intercepting the wire can be entered by the water inlet 1 and flows to the second water outlet 5 Rinse the water to clean the thread.

The filter 3 divides the inner cavity of the casing 2 into an inner flow passage and an outer flow passage. One end of the inner flow passage is connected to the water inlet 1 and the other end is connected to the second water outlet 5, and the outer flow passage is connected to the first water outlet 4.

The casing 2 includes a cylindrical body, the filter net 3 has a cylindrical shape, and the filter net 3 is disposed coaxially with the cylindrical body and has a gap between the outer periphery of the filter net 3 and the inner peripheral wall of the cylindrical body. The inner circumference of the filter 3 is an internal flow path, and an outer flow path is formed between the outer periphery of the filter 3 and the inner peripheral wall of the cylindrical body.

The water inlet 1 is connected to one end of the cylindrical body, and the second water outlet 5 is connected to the other end of the cylindrical body and is provided with a drain valve. The first water outlet 4 is disposed between the water inlet 1 and the second water outlet 5. a side wall of the cylindrical body and connected to the circulation pump;

Preferably, the water inlet 1, the first water outlet 4, and the second water outlet 5 are located on the same side of the cylindrical body.

One end of the cylindrical body is open and the other end is sealed, and both ends of the filter net 3 are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided with a seal matching the open end of the cylindrical body. The end surface, the second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion are respectively provided with openings that communicate with the water inlet 1 and the second water outlet 5.

The open end of the cylindrical body is provided with a limiting structure, and the sealing end surface of the first fixing portion is provided with a groove for fitting the limiting structure.

The filter screen 3 has a smooth surface to self-clean the wire chips intercepted by the filter surface by means of water rinsing;

The filter net 3 of the embodiment is a nylon mesh;

The nylon mesh has a PTFE coating on the mesh surface to make the surface of the nylon mesh smoother and has a suitable rigidity, so that the water can rinse away the wire debris retained on the surface, and the cleaning effect is obtained. better.

The embodiment also relates to a washing machine provided with the above-described chip filtering device.

The setting of the wire dust filtering device of the washing machine may be:

The housing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5 which are opened and closed at the same time. The water inlet 1 connects the drainage of the inner tub, and the first water outlet 4 transports the drainage filtered by the filter 3 to the drain. The inner tub or the purifying device is recycled, and the filter net 3 forms a filtering surface for trapping the wire at least at the first water outlet 4, and the wire trapped on the filtering surface can be flowed from the water inlet 1 to the water of the second water outlet 5. Rinse to the second water outlet 5 and discharge.

Compared with the prior art, the chip filtering device of the present invention has the following beneficial effects:

The wire scraps in the water can be effectively filtered, and the wire chips trapped on the surface of the filter net 3 can be flushed to the second water outlet 5 and discharged when the washing machine discharges the waste water, and the filter 3 is not manually removed for cleaning, which is convenient and trouble-free;

The cylindrical filter 3 is coaxially disposed in the cylindrical body of the casing 2 and has a gap between the outer periphery of the filter 3 and the inner peripheral wall of the cylindrical body, and the water to be filtered may be from the periphery of the cylindrical filter. At the point of filtration, the efficiency of filtering the water is higher, the wire is trapped on the inner surface of the filter 3, the influent water flows from the water inlet 1 to the second water outlet 5, and the wire is washed, and the wire is discharged together from the second water outlet 5. It is convenient and quick, and in the case of no special need, in the process of draining the washing machine after washing, the self-cleaning of the filter 3 is realized at the same time, water resources are saved, complicated control settings are not required, and the design is exquisite;

One end of the cylindrical body is open and the other end is sealed, and both ends of the filter net 3 are extended with a first fixing portion and a second fixing portion, and the first fixing portion is provided with a seal matching the open end of the cylindrical body. The end surface, the second fixing portion is in contact with the sealing end of the cylindrical body, and the side walls of the first fixing portion and the second fixing portion are respectively provided with openings corresponding to the water inlet 1 and the second water outlet 5, so that Convenient installation and disassembly of filter 3, no complicated mold development, saving manpower;

The surface of the nylon mesh is smooth, the thread is not easily adsorbed, and the wire debris trapped on the surface is more easily washed and discharged along the water flow, and the self-cleaning of the filter 3 is completely realized;

The surface of the nylon mesh is provided with polytetrafluoroethylene, which further improves the non-adhesive property of the mesh surface, reduces the risk of the filter screen being deposited by fine wire scraps, and the wire debris trapped on the surface of the filter mesh 3 is more easily washed and cleaned. better result.

The washing machine of the invention is provided with a wire filtering device capable of achieving a self-cleaning effect, which can filter and recycle the washing and rinsing water of the washing machine, thereby improving the utilization of water resources, and the wire filtering device is not blocked It is more reliable and does not require manual cleaning and maintenance. The overall stability of the washing machine is good.

Embodiment 3

The difference between this embodiment and the first embodiment is that the filter net 3 is arranged in a different manner, and is a two-dimensional planar structure disposed on the inner surface of the inner cavity of the casing 2 and the first water outlet 4.

A wire filtering device comprises a casing 2 and a filter net 3 disposed in the inner cavity of the casing 2. The casing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5, and the water inlet 1 and the first A water outlet 4 is connected, and a filter 3 is arranged between the two to form a filtered water path, and the water inlet 1 and the second water outlet 5 are directly connected, and a flushing water path for flushing the filter 3 is formed therebetween.

The filter net 3 is a two-dimensional structure or a three-dimensional structure. The filter net 3 is disposed in a part or the whole of the inner cavity of the casing 2, and the filter surface of the filter net 3 intercepting the wire can be entered by the water inlet 1 and flows to the second water outlet 5 Rinse the water to clean the thread.

The filter net 3 is planar, and is disposed on an inner surface of the inner cavity of the casing 2 and the first water outlet 4, and the water flows from the water inlet 1 into the inner cavity of the casing 2 and is filtered by the filter 3 to be first The nozzle 4 flows out, and the lint is trapped on the surface of the filter 3. When water is required to be drained, the influent flushes the lint on the surface of the filter 3 to the second outlet 5 and discharges.

The filter screen 3 has a smooth surface to self-clean the wire chips intercepted by the filter surface by means of water rinsing;

The filter net 3 of the embodiment is a stainless steel punching net, and the stainless steel punching net is prepared by a stainless steel polishing integral punching process.

Preferably, the stainless steel punched mesh is provided with a Teflon coating on the mesh surface.

The embodiment also relates to a washing machine provided with the above-described chip filtering device.

The setting of the wire dust filtering device of the washing machine may be:

The housing 2 is provided with a water inlet 1, a first water outlet 4 and a second water outlet 5 which are opened and closed at the same time. The water inlet 1 connects the drainage of the inner tub, and the first water outlet 4 transports the drainage filtered by the filter 3 to the drain. The inner tub or the purifying device is recycled, and the filter net 3 forms a filtering surface for trapping the wire at least at the first water outlet 4, and the wire trapped on the filtering surface can be flowed from the water inlet 1 to the water of the second water outlet 5. Rinse to the second water outlet 5 and discharge.

Compared with the prior art, the chip filtering device of the present invention has the following beneficial effects:

The wire scraps in the water can be effectively filtered, and the wire chips trapped on the surface of the filter net 3 can be flushed to the second water outlet 5 and discharged when the washing machine discharges the waste water, and the filter 3 is not manually removed for cleaning, which is convenient and trouble-free;

The surface of the stainless steel punching net is smooth, the thread is not easy to be adsorbed, and the thread trapped on the surface is more easily washed and discharged along the water flow, and the self-cleaning of the filter 3 is completely realized;

The surface of the stainless steel punching net is provided with polytetrafluoroethylene, which further improves the non-adhesive property of the mesh surface, reduces the risk of depositing scale of the filter wire by fine wire scraps, and the wire chips trapped on the surface of the filter net 3 are more easily washed, and the cleaning effect is better.

The washing machine of the invention is provided with a wire filtering device capable of achieving a self-cleaning effect, which can filter and recycle the washing and rinsing water of the washing machine, thereby improving the utilization of water resources, and the wire filtering device is not blocked It is more reliable and does not require manual cleaning and maintenance. The overall stability of the washing machine is good.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any technology that is familiar with the present patent. Those skilled in the art can make some modifications or modifications to equivalent embodiments by using the technical content of the above-mentioned hints without departing from the technical scope of the present invention, but the technology according to the present invention does not deviate from the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the present invention.

Claims (10)

A wire filtering device, comprising: a casing (2) and a filter (3) disposed in a cavity of the casing (2), the casing (2) is provided with a water inlet (1), and the first outlet The water inlet (4) and the second water outlet (5), the water inlet (1) is connected with the first water outlet (4), and a filter mesh (3) is formed between the two to form a filtered water passage, the water inlet (1) and the first The two water outlets (5) are directly connected, and a flushing water path for flushing the filter (3) is formed between the two. The chip filtering device according to claim 1, wherein the filter net (3) is a two-dimensional structure or a three-dimensional structure, and the filter net (3) is disposed in a part or the whole of the inner cavity of the casing (2), and is filtered. The filtering surface of the net (3) trapping wire can be washed by the water entering from the water inlet (1) and flowing to the second water outlet (5) to clean the wire. The chip filtering device according to claim 1 or 2, characterized in that the filter (3) divides the inner cavity of the casing (2) into an inner flow passage and an outer flow passage, and one end of the inner flow passage and the water inlet (1) The connection is connected to the second water outlet (5) at the other end, and the external flow channel is connected to the first water outlet (4). The chip filtering device according to claim 3, wherein the casing (2) comprises a cylindrical body, the filter mesh (3) is cylindrical, and the filter mesh (3) and the cylindrical shape The main body is coaxially disposed and has a gap between the outer circumference of the filter net (3) and the inner peripheral wall of the cylindrical body, the inner circumference of the filter net (3) is an inner flow path, and the outer circumference of the filter net (3) and the inner peripheral wall of the cylindrical main body Between the external flow paths. A chip filtering device according to claim 4, wherein the water inlet (1) is connected to one end of the cylindrical body, and the second water outlet (5) is connected to the other end of the cylindrical body and is provided with drainage. a valve, a first water outlet (4) is disposed on a side wall of the cylindrical body between the water inlet (1) and the second water outlet (5) and connected to the circulation pump; Preferably, the water inlet (1), the first water outlet (4) and the second water outlet (5) are located on the same side of the cylindrical body. The chip filtering device according to claim 4 or 5, wherein one end of the cylindrical body is open and the other end is sealed, and both ends of the filter net (3) are extended with a first fixing portion and a second portion. a fixing portion, the first fixing portion is provided with a sealing end surface matching the open end of the cylindrical body, and the second fixing portion is in contact with the sealing end of the cylindrical body, and the sidewalls of the first fixing portion and the second fixing portion respectively correspond to An opening that connects the water inlet (1) and the second water outlet (5) is provided. The chip filtering device according to claim 6, wherein the open end of the cylindrical body is provided with a limiting structure, and the sealing end surface of the first fixing portion is provided with a groove for fitting the limiting structure. The chip filtering device according to any one of claims 1 to 7, characterized in that the filter net (3) has a smooth surface to self-clean the wire chips intercepted by the filter surface by means of water rinsing; Preferably, the filter mesh (3) is a stainless steel punched mesh or a nylon mesh; Preferably, the stainless steel punching net is prepared by a stainless steel polishing integral punching process. The chip filtering device according to claim 8, wherein the stainless steel punched mesh is provided with a polytetrafluoroethylene coating on the mesh surface. A washing machine characterized by having the chip filtering device according to any one of claims 1-9.

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