CN117535950A - Filtering module and washing equipment - Google Patents

Abstract

The invention belongs to the technical field of washing equipment, and discloses a filtering module and washing equipment, wherein the filtering module comprises: the filtering device is provided with a sewage outlet for discharging sewage carrying filtered impurities; the recovery device is communicated with the sewage outlet of the filtering device and used for receiving sewage discharged by the filtering device; the pressure relief device is arranged between the sewage outlet of the filtering device and the recovery device and is used for relieving pressure when sewage entering the recovery device is blocked. According to the invention, when the sewage enters the recovery device and is blocked, the water pressure between the filtering device and the recovery device is increased, and the pressure relief device is arranged to relieve the pressure, so that the possible structural damage caused by overlarge water pressure can be avoided, and the filtering module is protected.

Description

Filtering module and washing equipment

Technical Field

The invention belongs to the technical field of washing equipment, and particularly relates to a filtering module and washing equipment.

Background

A washing apparatus for washing laundry, such as a washing machine, may cause laundry to be chipped off and mixed into washing water due to friction between the laundry and the washing machine itself during washing of the laundry. If the lint in the washing water cannot be removed, the lint is likely to adhere to the surface of the laundry after the washing is completed, and the washing effect of the laundry is likely to be affected. For this reason, a filter for filtering lint is installed in the conventional washing machine, and the lint is removed from the washing water by passing the washing water through the filter continuously during the washing process.

However, the filtered impurities such as the filigree residue are accumulated in the filter, which can cause the filter to be blocked for a long time, and the filtering function cannot be realized. The filter is generally installed inside the washing machine, and a user cannot directly observe the accumulation of filtered impurities therein, and can only clean the filter periodically. However, if the laundry lint is removed more than a certain amount of time by the user, or if the user forgets to clean the filter for a long time, the filter may be clogged. At this time, if the user uses the washing machine to wash clothes, the filter cannot realize the filtering function, so that the washing effect of the clothes can be affected. If the washing machine cannot judge that the filter is blocked, the washing water is forced to be led into the filter, the water pressure in the waterway structure of the washing machine is increased due to the fact that the filter cannot drain water, and even the waterway structure is damaged in serious cases.

On the other hand, in recent years, the concept of microplastic has been proposed and increasingly paid attention to in the field of environmental protection. It has been found that an important source of microplastic is wastewater discharged from domestic washing machines. The micro plastic mixed with natural water environment is formed by the fact that the clothing fibers falling off in the washing process are discharged along with the drainage water flow of the washing machine along with the popularization of chemical fiber fabrics. The micro-plastic directly enters the ecological cycle along with the drainage water flow, and finally accumulates in the human body through a natural biological chain, so that the human health can be influenced. For this reason, related standards have been established in some areas for the content of microplastic in the drain water of washing machines. And in case that the filter cannot be used, the washing machine is operated to wash clothes, and the thread scraps falling off from the clothes can be directly discharged along with the drainage water flow of the washing machine, so that a large amount of microplastic exists in the drainage of the washing machine, and the problem that the drainage standard cannot be met is solved.

In view of this, the present invention has been made.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a filter module capable of automatically releasing pressure when a blocking condition occurs and washing equipment with the filter module.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

a filtration module, comprising:

the filtering device is provided with a sewage outlet for discharging sewage carrying filtered impurities;

the recovery device is communicated with the sewage outlet of the filtering device and used for receiving sewage discharged by the filtering device;

the pressure relief device is arranged between the sewage outlet of the filtering device and the recovery device and is used for relieving pressure when sewage entering the recovery device is blocked.

Further, the pressure relief device comprises a pressure relief branch and a pressure relief valve arranged on the pressure relief branch; the water inlet end of the pressure relief branch is connected between the sewage outlet of the filtering device and the recovery device, the pressure relief valve is opened to conduct the pressure relief branch, and the sewage discharged by the filtering device enters the pressure relief branch to realize pressure relief.

Further, the relief valve includes:

the valve body is provided with a water inlet and a water outlet;

the valve plug is arranged in the valve body in a reciprocating manner;

the reset piece applies reset force to the valve plug to keep the valve plug to seal the water inlet;

when the water pressure in the pressure relief branch reaches a preset value, the valve plug moves to open the water inlet under the action of the water pressure; the water pressure in the pressure release branch circuit drops, and the valve plug resets under the reset piece effect and blocks off the water inlet.

Further, the valve body has a certain extension length along the reciprocating motion direction of the valve plug, the water inlet is arranged at one end of the valve body, and the water outlet is arranged in an area, close to one end where the water inlet is arranged, on the side wall of the valve body.

Further, a pressure detection element for detecting the water pressure in the pressure relief branch is arranged between the water inlet end of the pressure relief branch and the pressure relief valve.

Further, the filter comprises a sewage discharge pipeline, the water inlet end of the sewage discharge pipeline is connected with the sewage discharge outlet of the filter device, the water outlet end of the sewage discharge pipeline is communicated with the recovery device, and the water inlet end of the pressure relief branch is communicated with the sewage discharge pipeline; and a sewage control valve for controlling the on-off of the sewage pipeline is arranged on the sewage pipeline.

Further, the blowdown control valve is arranged between the water outlet end of the blowdown pipeline and the water inlet end of the pressure relief branch.

Further, the recovery device includes:

a housing having a recovery chamber therein;

the wire scrap collecting assembly is arranged in the recovery cavity, a collection cavity for receiving sewage is formed by surrounding, the sewage carrying the filtered impurities enters the collection cavity, the filtered sewage flows into the recovery cavity outside the collection cavity after being filtered by the wire scrap collecting assembly, and the filtered impurities are collected in the collection cavity;

the pressure relief device is used for relieving pressure when the online scrap collecting assembly is blocked by the filtered impurities.

Further, the pressure relief device comprises a pressure relief branch, and the water inlet end of the pressure relief branch is connected between the sewage outlet of the filtering device and the recovery device;

the water outlet end of the pressure relief branch is communicated with the external space, or the water outlet end of the pressure relief branch is communicated with the recovery cavity outside the collecting cavity.

Another object of the present invention is to provide a washing apparatus comprising a water containing cartridge, characterized in that it further comprises a filtration module according to any one of claims 1 to 9, the filtration means of which are in communication with said water containing cartridge.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the pressure relief device is arranged in the filter module, so that the pressure relief function is realized when the water pressure between the filter device and the recovery device is increased due to the blockage of the sewage in the process of entering the recovery device, and the problem of structural damage possibly caused by excessive water pressure is further avoided, and the filter module is protected.

In the invention, the pressure relief valve is arranged between the sewage outlet of the filtering device and the recovery device, and can be automatically opened when the water pressure reaches a preset value, so that the pressure relief function is realized, an additional control structure is not needed, and the pressure relief valve is easy to realize. The pressure detection element is arranged on the pressure relief branch, the pressure detection element can detect the water pressure in the pressure relief branch to determine whether the pressure relief valve is opened or not, and the opening and closing state of the pressure relief valve does not need to be directly detected, so that the pressure relief valve is simple in structure.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic view showing the structure of a washing apparatus in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a filtering module and related waterway according to an embodiment of the present invention;

FIG. 3 is a schematic view of a pressure relief valve according to a first embodiment of the present invention (closed state);

FIG. 4 is a schematic view of a pressure relief valve according to an embodiment of the present invention (open state);

FIG. 5 is a schematic diagram of a filtering module and related waterway according to a second embodiment of the present invention;

fig. 6 is a flowchart of a control method of the washing apparatus in the third embodiment of the present invention.

In the figure: 10. a case; 100. a water holding cylinder; 110. a window pad; 220. a circulation line; 230. a water return line; 231. a backwater control valve; 240. a sewage discharge pipeline; 241. a blowdown control valve; 245. a pressure detecting element; 247. a pressure relief branch; 250. an outer line; 260. a water drum drain pipe; 270. a switching device; 400. a circulation pump; 500. a recovery device; 510. a housing; 533. a main cavity; 570. a lint collection assembly; 590. a pressure release valve; 591. a valve body; 5911. a water inlet; 5912. a water outlet; 592. a valve plug; 593. a reset member; 594. a boss; 595. a limit part; 596. a valve seat; 597. a guide rod; 600. a filtering device; 610. a filter cavity; 6101. a water inlet; 6102. a filtered water outlet; 6103. a sewage outlet; 620. a filtering mechanism; 621. a water outlet joint; 660. a driving mechanism; 680. cleaning the particles; 690. a baffle; 691. and water holes.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

The embodiment provides a filter module and washing equipment comprising the filter module. The washing equipment can be washing equipment with a clothes washing function, such as a washing machine, a washing and drying integrated machine, a nursing machine and the like.

As shown in fig. 1 and 2, the washing apparatus of the present embodiment includes a water tub 100, and a filtering module, which is in communication with the water tub 100, may receive water in the water tub 100 for filtering. The filtering module specifically includes a filtering device 600 and a recycling device 500.

Wherein, the filtering device 600 is communicated with the water containing cylinder 100, and a circulating pump 400 is arranged between the filtering device 600 and the water containing cylinder 100, and water in the water containing cylinder 100 can be guided into the filtering device 600 for filtering under the action of the circulating pump 400. The filter device 600 has a self-cleaning function, and a user does not need to detach the filter device 600 for manual cleaning, so that the filter device 600 can automatically clean and discharge filter impurities accumulated in the filtering process along with water flow. Specifically, filter device 600 is provided with drain 6103, and accessible drain 6103 discharges from the sewage that carries filtering impurity after the clearance, prevents that filtering impurity from piling up in filter device 600 inside a large amount, influences filtration efficiency.

The recovery device 500 is communicated with the drain 6103 of the filter device 600, and can receive the sewage discharged by the filter device 600, so as to avoid the problem that the sewage discharged by the filter device 600 directly flows into the drain water of the washing device to be discharged outwards, and further prevent the micro-plastics in the filtered impurities from entering the ecological cycle along with the drain water.

In this embodiment, the filtering module further includes a pressure relief device. The pressure relief device is disposed between the drain 6103 of the filter device 600 and the recovery device 500, for pressure relief when the sewage entering the recovery device 500 is blocked.

Since the sewage carrying the filtered impurities is received in the recovery device 500, there is a possibility that the filtered impurities clog the recovery device 500, resulting in a situation that the sewage discharged from the filtering device 600 later cannot enter the recovery device 500. Particularly, if the circulation pump 400 is in an operating state at this time, the water in the water tub 100 is continuously supplied to the filtering apparatus 600, and the filtering apparatus 600 cannot drain the water to the recovery apparatus 500, the water pressure inside the filtering apparatus 600 and between the filtering apparatus 600 and the recovery apparatus 500 may be significantly increased, and the waterway structure may be damaged in serious cases.

Through setting up pressure relief device, can in time let out the too big water pressure, and then avoid the too big structure damage that probably causes of water pressure, play the guard action to filtration module.

Specifically, the recycling apparatus 500 in the present embodiment includes a housing 510 having a recycling chamber therein, and a lint collecting assembly 570 disposed in the recycling chamber. The lint collecting assembly 570 encloses a collecting chamber that receives the waste water, dividing the recovery chamber into a collecting chamber inside the lint collecting assembly 570, and a main receptacle 533 outside the lint collecting assembly 570. The sewage discharged from the filtering apparatus 600, which carries the filtered impurities, enters the collection chamber, and the filtered impurities are filtered by the lint collecting assembly 570 and then flow into the main chamber 533 outside the lint collecting assembly 570, where the filtered impurities are collected.

The housing 510 is insertably/retractably installed to the cabinet 10 of the washing apparatus, and an upper side of the housing 510 is provided in an open structure. The lint collecting assembly 570 is detachably mounted inside the housing 510, and a user can detach it for cleaning, so that the cleaning operation is more convenient.

In the above-described aspect, the sewage discharged from the filtering apparatus 600 may be filtered in the recycling apparatus 500, and finally the filtered impurities are collected in the collecting chamber of the lint collecting assembly 570, and the water without the filtered impurities is collected in the main chamber 533 outside the lint collecting assembly 570. The filtering impurities are separated from the sewage through the thread scraps collecting assembly 570, so that the user can directly treat the collected filtering impurities, and the situation that the filtering impurities are mixed in the water and cannot be effectively treated is avoided.

In this embodiment, the pressure relief device is mainly used for relieving pressure when the wire scrap collecting assembly 570 is blocked by the filtered impurities. The interior of the lint collecting member 570 is primarily filled with filtered impurities, while the water, which occupies the majority of the volume of the sewage, is stored in the main chamber 533 outside the lint collecting member 570, so that the volume inside the lint collecting member 570 is relatively small. When the lint collecting assembly 570 is blocked by the filtered impurities, the sewage entering the main cavity 533 can not be filtered by the lint collecting assembly 570, so that the collecting cavity in the lint collecting assembly 570 can be filled up quickly, and the sewage cannot enter the main cavity, and the pressure relief device is needed to relieve the pressure.

In this embodiment, the pressure relief device includes a pressure relief branch 247 and a pressure relief valve 590 disposed on the pressure relief branch 247. The drain 6103 of the filter device 600 is communicated with the recovery device 500 through the drain pipe 240, and the water inlet end of the pressure relief branch 247 is connected to the drain pipe 240 between the drain 6103 of the filter device 600 and the recovery device 500. The pressure release valve 590 opens the pressure release branch 247 to allow the sewage discharged from the filtering device 600 to enter the pressure release branch 247 to release pressure.

In the above scheme, when pressure relief is needed, the pressure relief valve 590 opens to conduct the pressure relief branch 247, and sewage in the sewage drain pipeline 240 can enter the pressure relief branch 247, so that sewage in the filtering device 600 can be discharged along the pressure relief branch 247, thereby achieving the purpose of reducing the water pressure in the sewage drain pipeline 240.

In a further aspect of this embodiment, the water outlet end of the pressure relief leg 247 communicates with the main cavity 533 outside of the lint collection assembly 570. That is, the sewage is still discharged into the recycling apparatus 500, but does not enter the inside of the collection chamber of the lint collecting assembly 570, but is directly introduced into the main chamber 533 outside the lint collecting assembly 570. The purpose of pressure relief is realized, and the problem that sewage carries filtered impurities and is discharged randomly is also avoided.

In this embodiment, the pressure release valve 590 is a normally closed valve, and can be automatically opened when the water pressure reaches a certain level, so that the trouble of extra control is omitted.

Specifically, as shown in fig. 3 and 4, the pressure relief valve 590 includes a valve body 591, a valve plug 592, and a reset member 593. The valve body 591 is provided with a water inlet 5911 and a water outlet 5912, and the valve plug 592 is reciprocally disposed within the valve body 591, and the reset member 593 is used for applying a reset force to the valve plug 592 to keep the valve plug 592 from sealing the water inlet 5911.

When the water pressure in the pressure relief branch 247 reaches a predetermined value, the valve plug 592 moves under the water pressure to open the water inlet 5911. When the water pressure in the pressure relief branch 247 drops, the valve plug 592 resets under the action of the reset member 593 to close the water inlet 5911.

Further, the valve body 591 has a certain extension length along the direction of the reciprocating motion of the valve plug 592, the water inlet 5911 is disposed at one end (i.e., the left end in fig. 3) of the valve body 591, and the water outlet 5912 is disposed on the sidewall of the valve body 591 near the end where the water inlet 5911 is located.

In detail, a valve seat 596 is provided at the right end of the valve body 591, and the valve plug 592 is coupled to a guide rod 597 extending from left to right, the guide rod 597 being slidably mounted on the valve seat 596. The return member 593 is a compression spring, and is sleeved on the guide rod 597, with the left end abutting against the valve plug 592, and the right end abutting against the valve seat 596. The water inlet 5911 is provided with a protruding limiting part 595 on the inner wall of the valve body 591, the limiting part 595 surrounds the water inlet 5911 for a circle, and the periphery of the left end face of the valve plug 592 abuts against the limiting part 595 to seal the water inlet 5911. The central region of the left end face of the valve plug 592 is convex to form a convex portion 594, and the convex portion 594 protrudes outward of the water inlet 5911.

When no water exists in the pressure relief branch 247 or the water pressure is low, the reset piece 593 pushes the valve plug 592 to be in sealing contact with the limiting part 595 at the water inlet 5911, so that the water inlet 5911 is plugged. At this time, the pressure release valve 590 is in a closed state, so that the pressure release branch 247 is not conductive.

When the sewage enters the recovery device 500 and is blocked, the water pressure in the sewage discharge pipeline 240 increases and the sewage flows to the pressure relief branch 247. The valve plug 592 in the pressure release valve 590 directly contacts with the sewage in the pressure release branch 247, the water pressure acts on the convex part 594 of the valve plug 592 to generate rightward pressure, and the valve plug 592 is pushed to move rightward against the elastic force of the reset piece 593 to open the water inlet 5911, so that the water inlet 5911 is communicated with the water outlet 5912. At this time, the pressure relief branch 247 is conducted, and the sewage can directly enter the recovery device 500 along the pressure relief branch 247.

After the pressure relief branch 247 is conducted, the water pressure in the pressure relief branch is quickly reduced, the water pressure acting force applied by the valve plug 592 is reduced and is smaller than the elastic force applied by the reset piece 593, the valve plug 592 moves leftwards to reset under the action of the elastic force of the reset piece 593, the water inlet 5911 is plugged again, and the pressure relief valve 590 automatically returns to the closed state.

In a further aspect of this embodiment, a pressure detecting element 245 for detecting the water pressure in the pressure relief branch 247 is further disposed between the water inlet end of the pressure relief branch 247 and the pressure relief valve 590. The pressure detecting element 245 is connected with a control system of the washing device, and the washing device can judge whether the current pressure release valve 590 is opened according to whether the water pressure detected by the pressure detecting element 245 reaches a preset value, so as to determine whether the lint collecting assembly 570 in the recovery device 500 is blocked.

In the above-described scheme, since the pressure relief valve 590 is automatically opened or closed by the water pressure variation in the pressure relief branch 247, the open/close state of itself cannot be directly fed back. In order to detect the open/close state of the pressure relief valve 590, a pressure detection element 245 is disposed on the pressure relief branch 247, and whether the pressure relief valve 590 is opened currently is judged by detecting the water pressure in the pressure relief branch 247, so that the structure is simple, and the open/close state of the pressure relief valve 590 is effectively obtained.

In a further aspect of this embodiment, a drain control valve 241 is disposed on the drain pipe 240 for controlling the on/off of the drain pipe 240. The blowdown control valve 241 is specifically disposed between the water outlet end of the blowdown conduit 240 and the water inlet end of the pressure relief branch 247.

When the filter device 600 filters the introduced water, the drain control valve 241 is closed, and the pressure release valve 590 is kept closed, so that the drain 6103 of the filter device 600 is not communicated with the recovery device 500, and the filter device 600 can only filter the introduced water and then discharge the filtered water. When the filtering apparatus 600 needs to discharge the sewage outwardly, the sewage control valve 241 is opened again so that the filtering apparatus 600 can discharge the sewage into the recovery apparatus 500.

It should be noted that, since the drain control valve 241 is disposed between the water outlet end of the drain pipe 240 and the water inlet end of the pressure relief branch 247, when the drain control valve 241 is closed, a situation that the water pressure in the pressure relief branch 247 is large may also occur. Therefore, the control pressure detecting element 245 in the present embodiment only works when the blowdown control valve 241 is opened, so as to detect the water pressure in the pressure relief branch 247, and avoid erroneous judgment that the chip collecting assembly 570 is blocked due to the unopened blowdown control valve 241 when the filtering device 600 is filtering.

In this embodiment, the pressure relief branch 247 is connected to the sewage drain pipeline 240, and a pressure relief valve 590 capable of being automatically opened when the water pressure rises to a preset value is provided, when the thread scraps collecting component 570 in the recovery device 500 is blocked, the pressure relief branch 247 can be conducted through the pressure relief valve 590, so that the sewage discharged by the filter device 600 can directly enter the recovery device 500 along the pressure relief branch 247. Thus, when the wire scrap collecting assembly 570 is blocked to cause excessive water pressure in the sewage pipeline 240, an automatic pressure relief function can be realized, and structural damage possibly caused by excessive water pressure is avoided.

In a further aspect of this embodiment, the filtering device 600 specifically includes:

the filter cavity 610 is provided with a water inlet 6101, a filtered water outlet 6102 and a sewage drain 6103, wherein the water inlet 6101 is used for communicating with the water containing tube 100 so as to receive the introduced water, and the filtered water outlet 6102 is used for discharging the filtered water;

the filtering mechanism 620 is rotatably arranged inside the filtering cavity 610 and is provided with a water outlet connector 621 which is rotatably and hermetically connected with the filtered water outlet 6102;

the driving mechanism 660 is connected with the filtering mechanism 620 and is used for driving the filtering mechanism 620 to rotate in the filtering cavity 610.

The filter mechanism 620 divides the interior of the filter cavity 610 into an outer cavity and an inner cavity, wherein the water inlet 6101 is communicated with the outer cavity, and the filtered water outlet 6102 is communicated with the inner cavity. The water in the water containing barrel 100 enters the outer cavity through the water inlet 6101 under the action of the circulating pump 400, passes through the filtering mechanism 620 and enters the inner cavity to realize filtering, the filtering impurities carried in the water are attached to the outer wall of the filtering mechanism 620, and the water for filtering the filtering impurities can flow out from the filtering water outlet 6102 through the water outlet joint 621.

In detail, the filtering mechanism 620 includes a filter screen support, and a filter screen covered on the filter screen support. One end of the filter screen bracket extends into the filtered water outlet 6102 to form a water outlet joint 621.

When the impurities in the filter device 600 need to be cleaned, the driving mechanism 660 drives the filter mechanism 620 to rotate, so as to agitate the water flow in the filter cavity 610, and the filtered impurities adhered to the outer wall of the filter mechanism 620 are peeled off under the dual actions of centrifugal force and agitating water flow and are mixed into the water in the filter cavity 610, so that the filtered impurities are discharged along with the water flow from the drain 6103 on the filter cavity 610.

Cleaning particles 680 are also disposed between the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620, and are used for cleaning the inner wall of the filter cavity 610 and the outer wall of the filter mechanism 620 along with the friction and collision of water flow. In the filtering process, the cleaning particles 680 continuously rub against the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620 along with flowing water flow, so that the attached filtering impurities fall off, thereby preventing the filtering impurities from depositing, and avoiding the filtering mechanism 620 from being covered by the filtering impurities too fast to affect the filtering efficiency. On the other hand, the problem that the thickness of the filtering impurities attached to the filter body is large after the filtering is finished, and the filtering impurities are difficult to remove when the filtering device 600 is cleaned at the later stage because the inner wall of the filtering cavity 610 or the outer wall of the filtering mechanism 620 is too firmly attached is also avoided.

And when the driving mechanism 660 drives the filtering mechanism 620 to rotate in the filtering cavity 610 to realize self-cleaning, the cleaning particles 680 move in the filtering cavity 610 along with the action of the agitating water flow and rub against the inner wall of the filtering cavity 610 and the outer wall of the filtering mechanism 620, so that the stripping efficiency of the filtered impurities is improved, and the self-cleaning effect of the filtering device 600 is better.

A baffle 690 is also arranged in the filter cavity 610, and water passing holes 691 are arranged on the baffle 690. The cleaning particles 680 are disposed on one side of the baffle 690 (i.e., the left side in fig. 2), and the filtered water outlet 6102 and the drain 6103 on the filter chamber 610 are together on the other side of the baffle 690 (i.e., the right side in fig. 2).

Through the setting of baffle 690, can prevent in the filtration process that cleaning particles 680 from gathering to filtration water outlet 6102, when filter equipment 600 carries out self-cleaning and discharges sewage, sewage carries filtering impurity and can pass baffle 690 by water hole 691 and be discharged by drain 6103, and cleaning particles 680 are stopped by baffle 690, can not be discharged along with the rivers by drain 6103, has avoided cleaning particles 680's loss. Meanwhile, the cleaning particles 680 can be prevented from being accumulated at the sewage outlet 6103, so that the sewage outlet 6103 is blocked, and the sewage discharge efficiency is affected.

The washing apparatus of this embodiment specifically includes a circulation filter pipe, the water inlet end and the water outlet end of which are respectively communicated with the water containing cartridge 100, and the filter device 600 and the circulation pump 400 are both disposed on the circulation filter pipe. During the washing of laundry by the washing machine, the circulation pump 400 is turned on to drive the water in the water tub 100 to flow along the circulation filter line into the filter device 600 and return to the water tub 100 after filtering.

In detail, the bottom of the water container 100 is connected with a water container drain pipe 260, the water container drain pipe 260 is connected with an inlet end of the circulation pump 400, an outlet end of the circulation pump 400 is connected with the circulation pipe 220, and the circulation pipe 220 is connected with a water inlet 6101 of the filtering device 600. The filtered water outlet 6102 of the filtering device 600 communicates with the water containing cartridge 100 through the water return line 230. The water outlet end of the water return pipeline 230 is specifically connected to the window pad 110 at the mouth of the water containing cylinder 100, and returns water to the water containing cylinder 100 through the window pad 110.

In a further aspect of this embodiment, a switching device 270 is disposed between the filtered water outlet 6102 of the filtering device 600 and the water return pipe 230, and a water inlet of the switching device 270 is communicated with the filtered water outlet 6102 of the filtering device 600. The switching device 270 has a first water outlet connected to the return pipe 230 and a second water outlet connected to the discharge pipe 250 for discharging water to the outside of the washing apparatus. The switching device 270 is internally provided with a switching mechanism for controlling the first water outlet and the second water outlet to be selectively communicated with the water inlet. The drain water of the washing apparatus is discharged to the outside after being filtered by the filtering device 600, so that the drain water is ensured to carry little micro plastics.

By arranging the switching device 270, the washing device can realize two filtering functions of circulating filtering in the washing process of the washing device and draining filtering in the draining process by arranging one filtering device 600. Meanwhile, the circulation pump 400 and part of pipeline structures are shared by the circulation filtration and the drainage filtration, so that the waterway control structure inside the washing equipment is simplified. By controlling the conduction direction of the switching device 270, the function switching between the circulation filtering and the drainage filtering can be realized, and the control logic is simple.

Preferably, a backwater control valve 231 is further arranged outside the filtered water outlet 6102 of the filtering device 600, for controlling the on-off between the filtered water outlet 6102 and the switching device 270. When the filtering device 600 performs filtering (including circulating filtering and drainage filtering), the backwater control valve 231 is in an open state, and when the filtering device 600 is controlled to discharge sewage, the backwater control valve 231 is closed, so that the filtering device 600 cannot discharge water from the filtered water outlet 6102, thereby ensuring that the sewage in the filtering device 600 is sufficiently discharged from the sewage outlet 6103.

In this embodiment, the washing apparatus performs the circulation filtration using the filtering device 600 during the washing process, removes the filings and other filtered impurities in the water, and ensures the washing effect of the laundry. In the drainage stage, the filtering device 600 is utilized to carry out drainage filtration, so that drainage water is discharged outwards after being filtered by the filtering device 600, the micro-plastic content in the drainage water flow is reduced to the greatest extent, and the ecological environment influence caused by washing water drainage is avoided.

Example two

As shown in fig. 1 and 5, this embodiment differs from the first embodiment in that: the water outlet end of the pressure relief branch 247 is not communicated with the recovery device 500 any more, but is communicated with the external space of the filtration module. Specifically, in this embodiment, the pressure relief branch 247 is communicated with the discharge pipeline 250 of the washing apparatus, and the sewage discharged by the pressure relief branch 247 directly enters the discharge pipeline 250 during pressure relief and is discharged out of the washing apparatus.

In this embodiment, the pressure release valve 590 is automatically opened and closed according to the water pressure in the pressure release branch 247, and when the water pressure in the pressure release branch 247 reaches a preset value, the pressure release valve 590 is opened to release pressure, so that the water pressure in the pressure release branch 247 is rapidly reduced, and the pressure release valve 590 is closed again in a short time. In this process, although the sewage discharged through the pressure relief branch 247 carries filtered impurities, the total amount of the discharged sewage is small, and the content of micro plastics in the discharged water of the washing equipment is not too high to meet the discharge standard.

Further, the pressure detecting element 245 provided on the pressure relief branch 247 may feed back the magnitude of the water pressure in the pressure relief branch 247 in real time. When the filter device 600 is in the operation state of the circulation pump 400 for sewage disposal, if the water pressure detected by the pressure detecting element 245 exceeds the preset value and then the water pressure drop is detected, the current pressure release valve 590 is opened under the action of the water pressure, and the washing device controls the circulation pump 400 to stop running, so that water is not led into the filter device 600 any more.

In another version of this embodiment, the pressure relief leg 247 may also lead directly to the outside of the washing apparatus, rather than discharging the effluent through the discharge line 250.

In this embodiment, the pressure relief branch 247 is directly communicated with the external discharge pipeline 250 of the washing device, or the pressure relief branch 247 is directly led to the outside of the washing device, so that the pressure relief effect is realized by discharging sewage out of the washing device. Because the pressure release valve 590 is automatically opened and closed under the action of water pressure, the time of the whole pressure release process is very short, and the total amount of the sewage discharged outwards for realizing pressure release is not large. The pressure relief effect is realized, the filter module is protected, and the content of micro plastic in the drainage of the washing equipment is not out of standard.

Example III

As shown in fig. 1, 2 and 5, the present embodiment provides a control method of the washing apparatus according to the first or second embodiment, including:

the washing apparatus runs a washing program, performing an additional program of water-guiding filtration to the filtering device 600;

judging whether the recovery device 500 receives sewage and blocks the sewage;

if the blockage occurs, the execution of the additional program is stopped, and the washing program is kept in an operating state.

In the above-described scheme, when it is judged that the recovery device 500 receives the blockage of the sewage, that is, the blockage of the lint collecting assembly 570, the execution of the additional process is stopped only, and the washing process is continued until the end. In this way, the problem that the filtering device 600 can not perform sewage discharge is avoided, the washing process can be completed under the condition that the user does not perform operation, and the degree of automation is higher. Especially, when the user does not wait at one side of the washing equipment, the operation of the washing program can not be stopped because the filtering module cannot work, and the complaints of the user caused by the fact that the washing program cannot be completed are avoided.

In a specific aspect of this embodiment, stopping execution of the additional program includes: in the subsequent operation of the washing process, the circulation pump 400 is not turned on for circulation filtration, and the circulation pump 400 is turned on only for drainage filtration in the drainage stage.

Since the filtering apparatus 600 is provided on the drain line of the washing device, the drain water flow is inevitably passed through the filtering apparatus 600. When the lint collecting member 570 of the recovery device 500 is clogged, the filtering device 600 does not lose the filtering function although it is unable to perform the sewage discharge.

At this time, the washing apparatus does not perform the circulation filtration any more, and only when it is operated to the drain stage, the circulation pump 400 is turned on to perform the drain filtration, so that the drain water flow can not be discharged through the filtering device 600. Meanwhile, the filtering device 600 does not perform circulating filtration any more, so that the working time of the filtering device 600 is reduced, and the problem of blockage caused by excessive filter impurities accumulated in the drainage stage of the filtering device 600 is avoided.

In a further aspect of this embodiment, if it is determined that the recovery apparatus 500 receives the sewage without clogging, the washing process is continued and the operation state of executing the additional process is maintained.

Specifically, the control method of the washing apparatus in this embodiment is shown in fig. 6, and includes the following steps:

s1, running a washing program;

s2, executing an additional program for guiding water to the filtering module for filtering;

s3, judging whether the recovery device 500 receives sewage and is blocked;

s4, stopping executing the additional program if the blockage occurs, otherwise, continuing executing the additional program;

s5, the washing program continues to run.

In step S3, if the pressure detecting element 245 detects that the water pressure reaches the preset value, it is determined that the recovery device 500 receives the sewage to be blocked.

Further, in step S4, when it is determined that the blockage occurs, after the water pressure detected by the pressure detecting element 245 decreases, the washing apparatus also sends a prompt message to remind the user to clean the recovery device 500 after the current washing procedure is completed.

The water pressure detected by the pressure detecting element 245 drops after reaching the preset value, which indicates that the current pressure relief valve 590 is opened, and at this time, the user is timely reminded that the thread scrap collecting assembly 570 in the recovery device 500 is blocked in the current washing process, and the pressure relief valve 590 is opened to relieve pressure. In this way, the user can clean the thread scraps collecting component 570 in the recovery device 500 after the washing is completed, so that the filtering module can work normally when the washing equipment runs the washing program again, and particularly, the filtering device 600 can smoothly discharge the filtering impurities accumulated in the filtering process, so as to ensure the filtering effect. Thus, the problem that the user cannot know the state of the lint collecting assembly 570 in the recovery device 500 and forgets to clean the lint collecting assembly is solved.

In this embodiment, the washing device may determine whether the sewage receiving process of the recovery device 500 is blocked during the operation process, and stop executing the additional program when the sewage receiving process of the recovery device 500 cannot be continued due to the blockage of the thread residue collecting assembly 570, while the washing program remains to continue to operate, so that the washing device completes the washing process without intervention, and the degree of automation is higher. The washing equipment can judge whether the pressure relief valve 590 is opened for pressure relief according to the water pressure detected by the pressure detection element 245, and prompt information is sent after the pressure relief valve 590 is opened, so that a user can be reminded to clean the recovery device 500 after the washing is finished, the washing equipment can normally execute an additional program to realize a filtering function when the washing equipment operates again, and the washing effect of clothes is ensured.

Example IV

As shown in fig. 1, 2 and 5, this embodiment is further defined by any one of the foregoing embodiments, where the washing apparatus performs an additional process of conducting water to the filtering module during the washing process, and the additional process is performed once every time the operation of the washing process is completed.

In this embodiment, the filtering capability of the filtering module is defined as follows: the filtration module may continue to perform additional procedures for as many times as it is currently in the current state until the filtration device 600 and/or recovery device 500 is plugged.

The filter module has an initial filter capacity of at least 10 to 30 times, preferably 15 to 25 times. For example, the initial filtering capacity of the filtering module is at least 20 times, that is, in the case that no filtered impurities are attached in the filtering device 600 and no filtered impurities and sewage are collected in the recovery device 500, the filtering module can completely perform the additional process at least among 20 washing processes continuously operated without clogging failure.

In the above description of the present embodiment, the "completely executing the additional program" means that the circulation filtration is performed at the set time periods in the washing stage and the rinsing stage, respectively, and the drain filtration is performed at the drain stage.

After each time the filter module completely executes the additional program in the washing program, the washing equipment records that the current filtering capacity of the filter module is subtracted from the original filtering capacity once. And if the time length of the filtering module for circulating filtering in the current washing program is smaller than the set time length, determining the loss of the filtering capacity in the current washing program according to the ratio of the actual filtering time length to the set time length, and further calculating the current filtering capacity of the filtering module.

In a preferred embodiment of this embodiment, the value of the filtering threshold is set to 1 or 2. And when the current filtering capacity of the filtering module is lower than the filtering threshold value, controlling to stop water guide to the filtering module, and not performing circulating filtering in the subsequent process of the washing procedure.

In the above scheme, when the filtering capacity of the filtering module is calculated to be close to 0 but not yet reaches 0, the washing equipment controls to stop water guide to the filtering module, so that the problem that water guide to the filtering module is controlled to be stopped in time before the filtering module is blocked and other faults are caused due to the fact that deviation exists between the calculation of the filtering capacity and the current actual state of the filtering module is avoided.

In another preferable scheme of this embodiment, the initial filtering capacity of the filtering module is denoted as X, and the value of the filtering threshold is set to X/5-X/3. For example, if the initial filtering capacity of the filtering module is 20 times, the value of the filtering threshold may be set to 4-6 times. When the current filtering capacity of the filtering module is below the filtering threshold, control reduces the frequency and/or duration of water being directed to the filtering module.

In the scheme, the value of the filtering threshold is relatively higher, and even if the computing of the filtering capacity of the washing equipment deviates from the current actual state of the filtering module, the situation that the filtering module is blocked or other faults affecting the filtering effect are caused when the computed filtering capacity is lower than the filtering threshold basically does not occur. At this time, the washing program is continuously operated in a mode of reducing the frequency and/or the duration of water guide to the filtering module, so that a part of filtering effect can be reserved, and the effect of washing clothes is improved.

The specific manner of reducing the frequency and/or duration of water diversion to the filtration module is described in detail in the above embodiments, and will not be described in detail in this embodiment.

In a further aspect of this embodiment, the filtering device 600 filters the washing water and the drain water of the washing apparatus, so as to filter out the filtered impurities with a size greater than 50 μm, wherein the filtered impurities may include micro plastics. In particular, the filtering impurities may include plastic fibers having a length of more than 50 μm and a diameter of 10 to 1000 μm. Preferably, the plastic fibers have a length of 400 to 600 μm, the most common length in distribution being 500 μm + -50 μm. The diameter of these plastic fibers is preferably 10 to 50 μm, most often 17 μm.+ -. 2 μm.

To achieve the filtering removal of the microplastic of the above dimensions, the filter screen in the filtering device 600 is selected from 20 mesh to 500 mesh. In order to ensure that the recycling device 500 can collect the microplastic carried in the sewage as fully as possible, the problem that the microplastic filtered by the filtering device 600 can pass through the lint collecting assembly 570 in the recycling device 500 does not occur, and the size of the pore diameter on the filter screen in the lint collecting assembly 570 is at least not larger than the pore diameter of the filter screen in the filtering device 600, that is, the mesh number of the filter screen in the lint collecting assembly 570 is not smaller than the mesh number of the filter screen in the filtering device 600 by 20 mesh to 500 mesh.

In this embodiment, a large number of tests are performed on different types of clothes and different washing procedures in advance, and it is found that the number of the filter screens in the thread scraps collecting component 570 and the number of the filter screens in the filtering device 600 are set within the above ranges, so that plastic fibers with the above sizes can be filtered out from the washing water and the drainage of the washing equipment, and finally, micro plastic particles with the total content of more than 80% of the water can be collected in the recovery device 500, so that the micro plastic content in the drainage water flow of the final washing equipment is greatly reduced, and the standard of direct discharge can be met.

In this embodiment, since the filtering device 600 has a self-cleaning function, the loss of filtering capability of the filtering module is mainly reflected in the recycling device 500. For example, as the total amount of collected filtered impurities increases in the recycling apparatus 500, the lint collecting assembly 570 is gradually covered with the filtered impurities, and the filtered impurities clog the mesh holes on the filter screen, so that the lint collecting assembly 570 cannot perform a filtering function on the sewage.

In this embodiment, a great number of test experiments are performed on different types of clothes and different washing procedures in advance, and the structure of the lint collecting assembly 570 is adjusted to change the maximum amount of filtered impurities that can be collected by the lint collecting assembly, so that the filtering module can at least completely execute additional procedures in the continuously running washing procedures for 10-30 times on the premise that the user does not clean the recovery device 500, thereby ensuring the use experience of the user.

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims (10)

1. A filtration module, comprising:

the filtering device is provided with a sewage outlet for discharging sewage carrying filtered impurities;

the recovery device is communicated with the sewage outlet of the filtering device and used for receiving sewage discharged by the filtering device;

the pressure relief device is arranged between the sewage outlet of the filtering device and the recovery device and is used for relieving pressure when sewage entering the recovery device is blocked.

2. The filtration module of claim 1, wherein the pressure relief device comprises a pressure relief branch and a pressure relief valve disposed on the pressure relief branch; the water inlet end of the pressure relief branch is connected between the sewage outlet of the filtering device and the recovery device, the pressure relief valve is opened to conduct the pressure relief branch, and the sewage discharged by the filtering device enters the pressure relief branch to realize pressure relief.

3. The filtration module of claim 2, wherein the pressure relief valve comprises:

the valve body is provided with a water inlet and a water outlet;

the valve plug is arranged in the valve body in a reciprocating manner;

the reset piece applies reset force to the valve plug to keep the valve plug to seal the water inlet;

when the water pressure in the pressure relief branch reaches a preset value, the valve plug moves to open the water inlet under the action of the water pressure; the water pressure in the pressure release branch circuit drops, and the valve plug resets under the reset piece effect and blocks off the water inlet.

4. A filtration module according to claim 3, wherein the valve body has a certain extension in the direction of the reciprocating movement of the valve plug, the water inlet is provided at one end of the valve body, and the water outlet is provided on a side wall of the valve body in a region near the end where the water inlet is located.

5. The filtration module of claim 2, wherein a pressure sensing element for sensing the water pressure in the pressure relief branch is disposed between the water inlet end of the pressure relief branch and the pressure relief valve.

6. The filtration module of any one of claims 2-5, further comprising a blowdown line, wherein a water inlet end of the blowdown line is connected to a blowdown port of the filtration device, a water outlet end is communicated with the recovery device, and a water inlet end of the pressure relief branch is communicated with the blowdown line; and a sewage control valve for controlling the on-off of the sewage pipeline is arranged on the sewage pipeline.

7. The filtration module of claim 6, wherein the blowdown control valve is disposed between a water outlet end of the blowdown line and a water inlet end of the pressure relief branch.

8. The filtration module of any one of claims 1-5, wherein the recovery device comprises:

a housing having a recovery chamber therein;

the wire scrap collecting assembly is arranged in the recovery cavity, a collection cavity for receiving sewage is formed by surrounding, the sewage carrying the filtered impurities enters the collection cavity, the filtered sewage flows into the recovery cavity outside the collection cavity after being filtered by the wire scrap collecting assembly, and the filtered impurities are collected in the collection cavity;

the pressure relief device is used for relieving pressure when the online scrap collecting assembly is blocked by the filtered impurities.

9. The filtration module of claim 8, wherein the pressure relief device comprises a pressure relief branch, a water inlet end of the pressure relief branch being connected between a drain outlet of the filtration device and the recovery device;

the water outlet end of the pressure relief branch is communicated with the external space, or the water outlet end of the pressure relief branch is communicated with the recovery cavity outside the collecting cavity.

10. A washing apparatus comprising a water containing cartridge, further comprising a filtration module of any one of claims 1-9, a filtration device of the filtration module in communication with the water containing cartridge.