Drainage device and washing machine

Abstract

The utility model provides a drainage device and a washing machine. The drainage device comprises a driving piece, a valve body, a telescopic valve plug, an operating rod and a locking mechanism, and a water inlet connector and a drainage connector which are communicated with a valve cavity of the valve body are formed in the side wall of the valve body; the driving piece is installed at one end of the valve body and can drive the valve plug to move in the valve cavity so as to open or close a channel between the water inlet connector and the water outlet connector. The operating rod is arranged at the other end of the valve body and can compress the valve plug so as to open a passage between the water inlet connector and the water outlet connector, and the locking mechanism can be switched between a locking state and an unlocking state; when the locking mechanism is in a locking state, the operating rod is locked at the position of the compression valve plug; and when the locking mechanism is in an unlocking state, the operation rod relieves compression on the valve plug. When automatic drainage is abnormal, a user can push the operating rod to compress the valve plug and switch the locking mechanism to the locking state so that the operating rod can be locked at the position where the valve plug is compressed, and therefore the valve plug opens a channel between the water inlet connector and the drainage connector, and drainage is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drainage, and particularly relates to a drainage device and a washing machine. BACKGROUND

[0002] The washing machine is generally provided with an emergency drainage opening, which is used for draining water in the washing machine as soon as possible to ensure that the waterway of the washing machine is unobstructed. When the existing down-drain washing machine fails to automatically drain water, the user needs to unscrew the plug at the emergency drainage opening, and drains the water to other places through the emergency drainage pipe, which cannot use the original drainage pipe, and the operation is inconvenient. CONTENT OF THE UTILITY MODEL

[0003] The application provides a drainage device and a washing machine to solve the problem that the drainage device of the existing washing machine is inconvenient to operate in emergency drainage.

[0004] In a first aspect, the application provides a drainage device, which comprises a driving member, a valve body, a retractable valve plug, an operating rod and a locking mechanism. The valve body has a valve cavity, and a water inlet interface and a drainage interface are arranged on the side wall of the valve body and communicate with the valve cavity. The driving member is mounted on one end of the valve body and can drive the valve plug to move in the valve cavity to open or close the passage between the water inlet interface and the drainage interface. The operating rod is arranged on the other end of the valve body, one end of the operating rod extends into the valve cavity and is in contact with the valve plug, and the operating rod can compress the valve plug to open the passage between the water inlet interface and the drainage interface. The locking mechanism can be switched between a locked state and an unlocked state. When the locking mechanism is in the locked state, the operating rod is locked at the position of compressing the valve plug. When the locking mechanism is in the unlocked state, the operating rod releases the compression of the valve plug.

[0005] Optionally, the other end of the valve body is provided with a valve cover, the valve cover is provided with a channel communicating with the valve cavity, the operating rod is arranged in the channel and one end of the operating rod extends into the valve cavity. The locking mechanism comprises a locking groove, an unlocking groove and a matching protrusion. The locking groove and the unlocking groove are arranged on the side wall of the channel in a circumferential direction and are spaced apart from each other. The length of the locking groove is less than that of the unlocking groove. The matching protrusion is protruded on the side wall of the operating rod, and the operating rod can rotate relative to the valve cover so that the matching protrusion is clamped into the locking groove or the unlocking groove. When the matching protrusion is clamped into the locking groove, the locking mechanism is in the locked state. When the matching protrusion is clamped into the unlocking groove, the locking mechanism is in the unlocked state.

[0006] Optionally, the operating rod comprises a first rod and a second rod, one end of the first rod penetrates into the channel and is provided with a clamping tooth, one end of the second rod is in contact with the valve plug, and a side wall of the other end of the second rod is provided with the matching protrusion, the matching protrusion has a slope, and the slope is in abutment with a side wall of the clamping tooth.

[0007] Optionally, a sealing ring is arranged between the valve cover and the operating rod.

[0008] Optionally, the other end of the valve body is provided with an opening in communication with the valve cavity, and the valve cover is detachably arranged at the opening.

[0009] Optionally, the valve cover is rotatable relative to the valve body along the circumference of the opening to be connected with or disconnected from the valve body, an outer surface of the valve cover is provided with a rotating operation part, and the operating rod is arranged in the rotating operation part.

[0010] Optionally, an inner thread is arranged on an inner wall of the opening, an outer thread is arranged on a side wall of the valve cover, and the outer thread is matched and connected with the inner thread, or one of the valve cover and the side wall of the opening is provided with a clamping groove, and the other is provided with a protrusion, and the valve cover is rotatable relative to the valve body around the circumference of the opening, so that the protrusion can be clamped into or out of the clamping groove.

[0011] Optionally, a baffle is arranged on the operating rod, and the baffle is arranged on a passage between the water inlet interface and the water outlet interface, and a plurality of filtering through holes are arranged on the baffle.

[0012] In a second aspect, the embodiments of the present application further provide a washing machine, which comprises a casing and the above-mentioned drainage device, and the drainage device is arranged at the bottom of the casing.

[0013] Optionally, the washing machine further comprises a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the water inlet interface, and the water outlet pipe is connected with the water outlet interface.

[0014] The drainage device and the washing machine provided by the embodiments of the present application can realize emergency drainage when automatic drainage is abnormal, the user can push the operating rod inward to compress the valve plug, and switch the locking mechanism to the locking state to lock the operating rod at the position of compressing the valve plug, so that the valve plug can open the passage between the water inlet interface and the water outlet interface, and the operation is convenient; after the emergency drainage is completed, the locking mechanism can be switched to the unlocking state to release the compression of the valve plug by the operating rod, so that the valve plug is elongated to close the passage between the water inlet interface and the water outlet interface. BRIEF DESCRIPTION OF DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. In the following description, the same reference numerals denote the same parts.

[0016] Figure 1 This is a schematic diagram of the drainage device provided in an embodiment of this application.

[0017] Figure 2 for Figure 1 A top view of the drainage system shown.

[0018] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the drainage device along the AA direction.

[0019] Figure 4 for Figure 2 The diagram shows the exploded structure of the drainage device.

[0020] Figure 5 for Figure 4 The diagram shows the structure of the operating lever and baffle in the drainage device.

[0021] Figure 6 This is a schematic diagram of the structure of the valve cover, operating lever, and baffle provided in the embodiments of this application.

[0022] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the valve cover, operating lever, and baffle along the BB direction.

[0023] Figure 8 for Figure 6 The diagram shows the exploded structure of the valve cover, operating lever, and baffle.

[0024] Figure 9 for Figure 8 The diagram shows a cross-sectional view of the valve cover, operating lever, and baffle along the CC direction.

[0025] Figure 10 for Figure 8 A schematic diagram of the valve cover structure.

[0026] Figure 11 for Figure 8 A schematic diagram of the structure of the first rod in the diagram.

[0027] Figure 12 for Figure 8 A schematic diagram of the structure of the second rod in the diagram.

[0028] Figure 13 A structural schematic diagram of a washing machine is provided in the embodiments of the present application.

[0029] Brief Description of the Drawings

[0030] 10, drain device; 20, machine shell; 21, mounting port; 30, water inlet pipe; 40, drain pipe; 100, driving member; 200, valve body; 201, opening; 210, water inlet interface; 220, drain interface; 300, valve plug; 400, valve cover; 401, passage; 402, locking groove; 403, unlocking groove; 410, rotary operation part; 500, operation lever; 510, first lever; 511, clamping tooth; 520, second lever; 521, matching protrusion; 522, inclined surface; 600, baffle; 601, filtering through hole; 700, sealing ring; 800, wire interface. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by “first” and “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0033] In the present application, the word “exemplary” is used to mean “serving as an example, instance, or illustration.” Any implementation described as “exemplary” in the present application is not necessarily to be construed as preferred or advantageous over other implementations. The term “and / or” includes any and all combinations of one or more of the associated listed items.

[0034] The embodiments of the present application provide a drain device 10, asFigures 1-12 As shown, the drain device 10 comprises a driving member 100, a valve body 200, a telescopic valve plug 300, an operating rod 500 and a locking mechanism, the valve body 200 has a valve cavity, a side wall of the valve body 200 is provided with a water inlet interface 210 and a drain interface 220 which are in communication with the valve cavity; the driving member 100 is installed at one end of the valve body 200 and can drive the valve plug 300 to move in the valve cavity to open or close the passage between the water inlet interface 210 and the drain interface 220; the operating rod 500 is arranged at the other end of the valve body 200, one end of the operating rod 500 extends into the valve cavity and is in contact with the valve plug 300, the operating rod 500 can compress the valve plug 300 to open the passage between the water inlet interface 210 and the drain interface 220, and the locking mechanism can be switched between a locked state and an unlocked state; when the locking mechanism is in the locked state, the operating rod 500 is locked at the position of compressing the valve plug 300; when the locking mechanism is in the unlocked state, the operating rod 500 releases the compression of the valve plug 300.

[0035] The drain device 10 provided by the embodiment of the present application can be used to realize emergency drainage when the automatic drainage is abnormal, the user can push the operating rod 500 inward to compress the valve plug 300, and switch the locking mechanism to the locked state to lock the operating rod 500 at the position of compressing the valve plug 300, so that the valve plug 300 can open the passage between the water inlet interface 210 and the drain interface 220, thereby realizing emergency drainage, which is convenient to operate; after the emergency drainage is completed, the locking mechanism can be switched to the unlocked state to release the compression of the valve plug 300 by the operating rod 500, so that the valve plug 300 is elongated to close the passage between the water inlet interface 210 and the drain interface 220.

[0036] It should be understood that the drain device 10 of the present application makes full use of the original drainage passage for emergency drainage, without the need to additionally increase the emergency drainage pipe 40, thereby saving the installation time of the emergency drainage pipe 40 when installed on the assembly line, improving the installation efficiency of the factory assembly line, and making the operation more convenient for the user. In addition, when the drain device 10 of the present application is applied to a washing machine or other equipment that needs to be drained, since the emergency drainage pipe 40 does not need to be increased, more space can be left in the casing 20 of the washing machine or other equipment, thereby facilitating the installation of other components.

[0037] Specifically, the working principle of the drain device 10 of the present application is as follows:

[0038] When the drain device 10 is in normal operation, the operating rod 500 does not need to be operated by the user. When drainage is needed, a control signal is transmitted to the driving member 100 (for example, an electric motor) through the wire interface 800, and the driving member 100 drives the valve plug 300 to move to open the passage between the water inlet interface 210 and the drain interface 220. Water flows into the valve cavity of the valve body 200 from the water inlet interface 210, and then is discharged from the drain interface 220, thereby achieving automatic drainage. When the drain device 10 is abnormally drained automatically, for example, when there is a power failure or the circuit is not connected, the user can push the operating rod 500 inward to compress the valve plug 300, and switch the locking mechanism to the locked state to lock the operating rod 500 in the position of compressing the valve plug 300, so that the valve plug 300 can open the passage between the water inlet interface 210 and the drain interface 220, thereby achieving manual drainage without power.

[0039] In some embodiments of the present application, the other end of the valve body 200 is provided with a valve cover 400, as shown in Figures 6-12 The valve cover 400 is provided with a passage 401 communicating with the valve cavity, and the operating rod 500 passes through the passage 401 and extends into the valve cavity at one end. The locking mechanism includes a locking groove 402, an unlocking groove 403, and a matching protrusion 521. The locking groove 402 and the unlocking groove 403 are arranged on the side wall of the passage 401 in a circumferential direction of the passage 401, and the length of the locking groove 402 (i.e., the length of the locking groove 402 in the axial direction of the passage 401) is less than the length of the unlocking groove 403 (i.e., the length of the unlocking groove 403 in the axial direction of the passage 401). The matching protrusion 521 is protrudingly arranged on the side wall of the operating rod 500. The operating rod 500 can rotate relative to the valve cover 400 so that the matching protrusion 521 is clamped into the locking groove 402 or the unlocking groove 403. When the matching protrusion 521 is clamped into the locking groove 402, the locking mechanism is in the locked state, and at this time the operating rod 500 is locked in the position of compressing the valve plug 300, and the valve plug 300 opens the passage between the water inlet interface 210 and the drain interface 220. When the matching protrusion 521 is clamped into the unlocking groove 403, the locking mechanism is in the unlocked state, and at this time the operating rod 500 releases the compression of the valve plug 300, and the valve plug 300 can automatically recover to close the passage between the water inlet interface 210 and the drain interface 220.

[0040] Optionally, the operating rod 500 comprises a first rod 510 and a second rod 520, one end of the first rod 510 penetrates into the channel 401 and is provided with a clamping tooth 511, one end of the second rod 520 is in contact with the valve plug 300, and the sidewall of the other end of the second rod 520 is provided with a matching protrusion 521, the matching protrusion 521 has an inclined surface 522, and the inclined surface 522 is in abutment with the sidewall of the clamping tooth 511. In this way, when the first rod 510 is rotated, the second rod 520 is driven to rotate, so that the matching protrusion 521 on the second rod 520 is clamped into the locking slot 402 or the unlocking slot 403. Illustratively, the number of the matching protrusion 521, the locking slot 402 and the unlocking slot 403 is three, and the three locking slots 402 and the three unlocking slots 403 are arranged alternately along the circumference of the channel 401, when the second rod 520 is rotated, the three matching protrusions 521 can be correspondingly clamped into the three locking slots 402 or the three unlocking slots 403.

[0041] Specifically, when emergency drainage is needed, the first rod 510 is pushed inward to compress the valve plug 300, and then the second rod 520 is rotated to clamp the matching protrusion 521 into the locking slot 402, at this time the operating rod 500 is locked in the position of compressing the valve plug 300, the valve plug 300 opens the passage between the water inlet interface 210 and the drainage interface 220, and normal drainage is realized; after the drainage is completed, the second rod 520 is rotated to clamp the matching protrusion 521 into the unlocking slot 403, at this time the operating rod 500 releases the compression of the valve plug 300, and the valve plug 300 can automatically recover to close the passage between the water inlet interface 210 and the drainage interface 220.

[0042] Optionally, a sealing ring 700 is arranged between the valve cover 400 and the operating rod 500, the sealing ring 700 plays a sealing role to prevent water from overflowing outside the valve body 200 through the gap between the operating rod 500 and the valve cover 400. Specifically, when the operating rod 500 comprises the first rod 510 and the second rod 520, the sealing ring 700 is arranged between the inner wall of the channel 401 of the valve cover 400 and the first rod 510, so as to prevent water from overflowing outside the valve body 200 through the gap between the first rod 510 and the inner wall of the channel 401.

[0043] Optionally, the other end of the valve body 200 is provided with an opening 201 communicating with the valve cavity, and the valve cover 400 is detachably arranged at the opening 201. By detachably arranging the valve cover 400 at the opening 201, when there are too many solid impurities in the valve cavity, the valve cover 400 can be opened to clean out the solid impurities, so as to prevent the solid impurities from causing blockage and affecting normal drainage when there are too many solid impurities.

[0044] In some embodiments of the present application, the valve cover 400 can be rotated relative to the valve body 200 along the circumference of the opening 201 to be connected with or disconnected from the valve body 200; the outer surface of the valve cover 400 (i.e. the surface of the valve cover 400 facing away from the driving member 100) is provided with a rotating operation part 410, and the operating rod 500 is arranged through the rotating operation part 410. By arranging the rotating operation part 410, it is convenient to install or remove the valve cover 400 from the valve body 200. Specifically, a user can hold the rotating operation part 410 to rotate the valve cover 400 relative to the valve body 200, and the valve cover 400 has a first position and a second position during the rotation; when the valve cover 400 is rotated to the first position, the valve cover 400 is connected with the valve body 200; when the valve cover 400 is rotated to the second position, the valve cover 400 is disconnected from the valve body 200, so that the valve cover 400 can be removed.

[0045] Alternatively, one of the valve cover 400 and the side wall of the opening 201 is provided with a clamping groove, and the other is provided with a protrusion; when the valve cover 400 is rotated relative to the valve body 200 around the circumference of the opening 201, the protrusion can be clamped into or out of the clamping groove, so that the valve cover 400 can be detachably installed at the opening 201 of the valve body 200. Specifically, the valve cover 400 has a first position and a second position during the rotation; when the valve cover 400 is rotated to the first position, the protrusion is clamped into the clamping groove, so that the valve cover 400 is connected with the valve body 200; when the valve cover 400 is rotated to the second position, the protrusion is out of the clamping groove, so that the valve cover 400 is disconnected from the valve body 200, so that the valve cover 400 can be removed from the valve body 200.

[0046] Alternatively, one of the valve cover 400 and the side wall of the opening 201 is provided with a clamping groove, and the other is provided with a protrusion; when the valve cover 400 is rotated relative to the valve body 200 around the circumference of the opening 201, the protrusion can be clamped into or out of the clamping groove, so that the valve cover 400 can be detachably installed at the opening 201 of the valve body 200. Specifically, the valve cover 400 has a first position and a second position during the rotation; when the valve cover 400 is rotated to the first position, the protrusion is clamped into the clamping groove, so that the valve cover 400 is connected with the valve body 200; when the valve cover 400 is rotated to the second position, the protrusion is out of the clamping groove, so that the valve cover 400 is disconnected from the valve body 200, so that the valve cover 400 can be removed from the valve body 200.

[0047] Optionally, the operation rod 500 is sleeved with a baffle 600, and the baffle 600 is located on the passage between the water inlet interface 210 and the water outlet interface 220, and the baffle 600 is provided with a plurality of filtering through holes 601. By arranging the filtering baffle 600 with the filtering through holes 601 on the passage between the water inlet interface 210 and the water outlet interface 220, the solid impurities can be intercepted under the condition of normal water drainage. Specifically, when the operation rod 500 includes the first rod 510 and the second rod 520, the baffle 600 is sleeved on the second rod 520.

[0048] It can be understood that, since the valve cover 400 is detachably covered on the opening 201, when the solid impurities intercepted on the baffle 600 are too much, the valve cover 400 can be opened to clean the solid impurities on the baffle 600, so as to avoid that the solid impurities are too much to cause blockage and affect normal water drainage.

[0049] The application also provides a washing machine, as shown in the figure, which includes a machine shell 20 and a water drainage device 10, and the water drainage device 10 is arranged at the bottom of the machine shell 20, and the specific structure of the water drainage device 10 refers to the above-mentioned embodiments. Since the washing machine adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Figure 13

[0050] Optionally, the washing machine further includes a water inlet pipe 30 and a water outlet pipe 40, the water inlet pipe 30 is connected to the water inlet interface 210, and the water outlet pipe 40 is connected to the water outlet interface 220. Specifically, one end of the water inlet pipe 30 is communicated with a washing tub of the washing machine, the other end of the water inlet pipe 30 is communicated with the valve cavity of the valve body 200 through the water inlet interface 210, one end of the water outlet pipe 40 is communicated with the valve cavity of the valve body 200 through the water outlet interface 220, and the other end of the water outlet pipe 40 is communicated with the outside; when the valve plug 300 opens the passage between the water inlet interface 210 and the water outlet interface 220, the wastewater in the washing tub can flow through the water inlet pipe 30, the water inlet interface 210, the valve cavity of the valve body 200, the water outlet interface 220 and the water outlet pipe 40 in sequence, and finally is discharged to the outside of the machine shell 20.

[0051] Optionally, the side of the machine shell 20 is provided with a mounting port 21, and the valve cover 400 of the water drainage device 10 is arranged in the mounting port 21. The application arranges the valve cover 400 in the mounting port 21 of the side of the machine shell 20, which is convenient for the user to open the valve cover 400 to clean the solid impurities in the valve cavity of the valve body 200.

[0052] In the above-mentioned embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0053] ​The drainage device and the washing machine provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and the core idea thereof; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A drainage device, characterized in that, The drainage device (10) includes a drive (100), a valve body (200), a retractable valve plug (300), an operating lever (500), and a locking mechanism. The valve body (200) has a valve cavity, and the side wall of the valve body (200) is provided with a water inlet (210) and a drain outlet (220) communicating with the valve cavity. The drive (100) is installed at one end of the valve body (200) and can drive the valve plug (300) to move in the valve cavity to open or close the passage between the water inlet (210) and the drain outlet (220). The operating lever (500) is located at the other end of the valve body (200). One end of the operating lever (500) extends into the valve cavity and contacts the valve plug (300). The operating lever (500) can compress the valve plug (300) to open the passage between the water inlet (210) and the drain (220). The locking mechanism can switch between a locked state and an unlocked state. When the locking mechanism is in the locked state, the operating lever (500) is locked in the position that compresses the valve plug (300); When the locking mechanism is in the unlocked state, the operating lever (500) releases the compression of the valve plug (300).

2. The drainage device according to claim 1, characterized in that, The valve body (200) is provided with a valve cover (400) at the other end. The valve cover (400) is provided with a channel (401) communicating with the valve cavity. The operating rod (500) passes through the channel (401) and one end extends into the valve cavity. The locking mechanism includes a locking groove (402), an unlocking groove (403), and a mating protrusion (521). The locking groove (402) and the unlocking groove (403) are spaced apart on the side wall of the channel (401) along the circumference of the channel (401). The length of the locking groove (402) is less than the length of the unlocking groove (403). The mating protrusion (521) protrudes from the side wall of the operating rod (500), and the operating rod (500) can rotate relative to the valve cover (400) so that the mating protrusion (521) can be engaged in the locking groove (402) or the unlocking groove (403). When the mating protrusion (521) engages with the locking groove (402), the locking mechanism is in a locked state; when the mating protrusion (521) engages with the unlocking groove (403), the locking mechanism is in an unlocked state.

3. The drainage device according to claim 2, characterized in that, The operating lever (500) includes a first lever (510) and a second lever (520). One end of the first lever (510) is inserted into the channel (401) and is provided with a retaining tooth (511). One end of the second lever (520) is in contact with the valve plug (300). The side wall of the other end of the second lever (520) is provided with the mating protrusion (521). The mating protrusion (521) has an inclined surface (522) and the inclined surface (522) abuts against the side wall of the retaining tooth (511).

4. The drainage device according to claim 2, characterized in that, A sealing ring (700) is provided between the valve cover (400) and the operating lever (500).

5. The drainage device according to claim 2, characterized in that, The valve body (200) has an opening (201) at the other end that communicates with the valve cavity, and the valve cover (400) is detachably placed over the opening (201).

6. The drainage device according to claim 5, characterized in that, The valve cover (400) can rotate circumferentially relative to the valve body (200) along the opening (201) to connect with or disconnect from the valve body (200); the outer surface of the valve cover (400) is provided with a rotating operating part (410), and the operating rod (500) passes through the rotating operating part (410).

7. The drainage device according to claim 6, characterized in that, The inner wall of the opening (201) is provided with an internal thread, and the side wall of the valve cover (400) is provided with an external thread, which is connected to the internal thread. Alternatively, one of the sidewalls of the valve cover (400) and the opening (201) is provided with a groove and the other with a protrusion, so that when the valve cover (400) rotates circumferentially relative to the valve body (200) around the opening (201), the protrusion can be engaged or disengaged from the groove.

8. The drainage device according to any one of claims 1 to 7, characterized in that, A baffle (600) is fitted on the operating lever (500), and the baffle (600) is located in the passage between the water inlet (210) and the drain (220). The baffle (600) is provided with a plurality of filter holes (601).

9. A washing machine, characterized in that, The washing machine includes a casing (20) and a drainage device (10) as described in any one of claims 1 to 8, wherein the drainage device (10) is disposed at the bottom of the casing (20).

10. The washing machine according to claim 9, characterized in that, The washing machine also includes a drain pipe (40) and a water inlet pipe (30), the water inlet pipe (30) being connected to the water inlet interface (210), and the drain pipe (40) being connected to the drain interface (220).

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