Drainage sealing valve and washing machine having the same

Abstract

The present invention discloses a drainage sealing valve and a washing machine having the drainage sealing valve. The drainage sealing valve comprises a valve body and a valve plug. A cavity is defined in the valve body to form a water path from a water inlet end to a water outlet end. The valve plug is movably arranged in the cavity. A first force providing unit for providing a force to the valve plug to normally close the valve body water path is also installed in the cavity. The washing machine of the present invention comprises a rotating drum, a drainage port is arranged at the bottom of the rotating drum, and a drainage sealing valve is installed corresponding to the drainage port. The drainage sealing valve used for the washing machine of the present invention has the characteristics of simple structure, reliable drainage and sealing performance, etc.

Description

Technical Field

[0001] The invention belongs to the field of household appliance water channel sealing, and in particular relates to a drainage sealing valve and a washing machine having the drainage sealing valve. Background Art

[0002] In the existing pulsator washing machine, a plurality of dehydration holes are arranged on the peripheral wall of the washing tub, and the washing tub is connected with the water tub. The washing tub is a clothing storage area for washing clothes. The water filled between the side walls of the washing tub and the water tub does not participate in washing. The water actually participating in washing is the water in the washing tub, which results in a huge waste of water resources. In addition, too much water between the washing tub and the water tub will also reduce the concentration of the detergent and affect the washing effect.

[0003] With the advancement of technology, the washing tub is changed to a non-hole one, that is, there is no dehydration hole on the wall of the washing tub, and the washing water is completely stored in the washing tub. At this time, there is no water between the washing tub and the water storage tub, commonly known as no water between the tubs. When dehydrating, open the drain at the bottom of the washing tub, and the mud, sand and thread scraps are drained from the bottom with the water flow. The water in the clothes is discharged from the upper part of the wall of the washing tub. When washing, the drain at the bottom of the washing tub needs to be closed.

[0004] To this end, the relevant technology proposes a blocking mechanism for limiting the rotation of the washing tub and a drainage sealing structure for closing the drain outlet. Specifically, a locking hole is set at the bottom of the washing tub, and a retractable locking rod is used to cooperate with the locking hole. When the locking rod is extended, it cooperates with the locking hole to lock the washing tub. When the locking rod is retracted, it escapes from the locking hole and the washing tub is contact-locked.

[0005] When washing, the washing tub is locked and the drain port of the washing tub is closed by the drain sealing structure, while when dehydrating, the washing tub needs to be rotated and the drain sealing structure opens the drain port of the washing tub. The drain sealing structure is not only complex in structure, but also needs to limit the rotation of the washing tub during the washing process, making many washing methods that require the rotation of the washing tub impossible to implement, which relatively reduces the washing efficiency.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drainage sealing valve, which has the advantages of simple structure, self-locking sealing, reliable sealing, etc.

[0008] The present invention also provides a washing machine with the drainage sealing valve, and the drainage sealing valve is used for sealing the drainage port of the rotary drum of the washing machine.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] A drainage sealing valve comprises a valve body and a valve plug. A cavity is defined in the valve body to form a water path from a water inlet end to a water outlet end. The valve plug is movably arranged in the cavity. A first force providing unit is also installed in the cavity to provide a force to the valve plug to normally close the valve body water path.

[0011] Furthermore, in order to enable the valve plug to better normally close the valve body water channel and optimize the force provided to the valve plug to normally close the valve body water channel, the first force providing unit is arranged in the cavity between the water inlet end and the valve plug;

[0012] Preferably, the first force providing unit provides a force on the valve plug toward the water outlet end to seal the water path between the valve plug and the water outlet end;

[0013] Also preferably, the first force providing unit provides a force in the opposite direction of the force acting on the water path of the valve plug normally closed valve body to act on the water inlet end.

[0014] Furthermore, in order to enable the valve plug to move more smoothly in the cavity to better open the water path in the valve body, the valve plug is restricted to linear motion in the cavity between the water inlet end and the water outlet end.

[0015] Furthermore, the valve body cavity and the valve plug cooperate to form a water outlet waterway from the water inlet end to the water outlet end, which sequentially includes a first waterway from the water inlet end to the valve plug, a second waterway between the outer periphery of the valve plug and the inner wall of the cavity, and a third waterway that can be opened and closed between the end face of the valve plug close to the water outlet end and the water outlet end.

[0016] Furthermore, in order to prevent the valve plug from moving out of position when the water path is opened, a guide structure is provided between the valve plug and the valve body to limit the movement of the valve plug in a predetermined direction between the water inlet end and the water outlet end.

[0017] Furthermore, in order to reduce the damage to the first force providing unit and the water inlet end caused by excessive movement of the valve plug when opening the water channel, a blocking structure that limits the movement of the valve plug to a certain position is also provided in the valve body.

[0018] Furthermore, the valve body comprises:

[0019] A first sealing cover is provided with a water through hole to form the water inlet end;

[0020] The second cover is connected to the first cover, and the two covers cooperate to form the cavity. A water outlet is provided in the direction opposite to the water inlet end to form the water outlet end.

[0021] Furthermore, in order to simplify the assembly process of the drain sealing valve, the second cover has a groove, the first cover is installed on the groove opening, the cavity is formed inside, a water outlet is provided at the bottom of the groove to form the water outlet end, and a gap is provided between the outer periphery of the valve plug and the side wall of the groove to form a second water path, and the valve plug is controlled to be away from the bottom of the groove so that a third water path connecting the second water path and the water outlet is formed between the valve plug and the bottom of the groove.

[0022] Furthermore, the side wall of the groove and the outer periphery of the valve plug are provided with a guide structure for limiting the movement of the valve plug along a predetermined trajectory between the water inlet end and the water outlet end;

[0023] Preferably, the guide structure includes a guide groove and a guide protrusion located in the guide groove, which are respectively arranged on the side wall of the groove and the outer periphery of the valve plug.

[0024] Furthermore, a blocking structure is provided on the side wall of the groove near the water inlet end to limit the valve plug to move to a certain position;

[0025] Preferably, the blocking structure is a blocking convexity arranged on the side wall of the groove, or the groove is a groove body structure with a stepped inner diameter, and the inner diameter of the groove close to the water outlet is larger than the inner diameter of the groove close to the water inlet.

[0026] Furthermore, the first force providing unit is an elastic support member in a compressed state, one end of which is supported and connected to the valve plug to provide elastic force to support the normally closed water outlet end of the valve plug, and the other end of which is supported and connected to the first sealing cover.

[0027] Furthermore, the elastic support member is a compression spring, and both ends are limitedly supported on the first sealing cover and the valve plug respectively;

[0028] Preferably, the compression spring is in a truncated cone structure, and the diameter of one end supported on the first cover is smaller than the diameter of one end supported on the valve plug, and this structure can reduce the misalignment caused by the movement of the valve plug;

[0029] Also preferably, the first cover is provided with a positioning boss, the valve plug is provided with an annular limiting groove, one end of the compression spring is sleeved on the positioning boss, and the other end is provided in the limiting groove.

[0030] Furthermore, the valve plug has a force-bearing portion for receiving the force of the normally closed valve body water channel provided by the first force providing unit and a sealing portion for closing the valve body water channel, the force-bearing portion is connected to the sealing portion, the force-bearing portion is arranged on the side close to the water inlet end, and the sealing portion is arranged on the side close to the water outlet end;

[0031] Preferably, the hardness of the force-bearing portion is greater than the hardness of the sealing portion;

[0032] Preferably, the force-bearing portion is in abutting connection with the sealing portion, or the force-bearing portion is integrally connected with the sealing portion.

[0033] Furthermore, the drainage sealing valve further comprises a second force providing unit for providing force for the valve plug to open the water path of the valve body, and the second force providing unit is arranged outside the valve body;

[0034] Preferably, the second force providing unit provides a force to the valve plug to open the water path of the valve body along the direction from the water outlet end to the water inlet end.

[0035] Furthermore, the second force providing unit includes:

[0036] A lifting member, which lifts the valve plug to move toward the water inlet end to open the water path of the valve body;

[0037] A driving member is a component that drives the lifting member to lift the valve plug.

[0038] Furthermore, the lifting member includes a lifting rod and a waterproof sleeve sleeved outside the lifting rod, the lifting rod is connected to the driving member, and the waterproof sleeve extends from the top of the lifting rod at least to surround the connection position between the lifting rod and the driving member.

[0039] Furthermore, the sealing part and the end surface of the water outlet are sealed to realize the normally closed third waterway, and the thickness of the sealing part corresponding to the water outlet of the water outlet is greater than the thickness of other parts, so as to extend into the water outlet. This structure can not only increase the strength of the valve plug and reduce the damage caused by the second force providing unit providing force to the valve plug sealing part, but also guide the valve plug to reset and seal the water outlet, strengthen the sealing effect, and prevent the occurrence of poor sealing due to misalignment when the valve plug is reset after being opened.

[0040] Furthermore, the lifting member provides a supporting force for lifting the valve plug from the water outlet position of the water outlet end.

[0041] The washing machine of the present invention comprises a rotary tub, a drain port is provided at the bottom of the rotary tub, and the drain sealing valve is installed corresponding to the drain port.

[0042] The valve body is installed in the drain outlet, and the second force providing unit is installed on the outer barrel below the valve body or on other water collecting devices that collect water discharged from the drain outlet of the rotating barrel.

[0043] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0044] The drainage sealing valve described in the present invention is a normally closed self-locking valve structure, which is simple and reliable. It can achieve its own water channel sealing without the need for external force. The greater the water pressure, the better the sealing effect. At the same time, since the sealing valve is a normally closed structure, the possibility of initial water leakage is avoided, thereby relatively saving water resources.

[0045] The drainage sealing valve of the present invention is exquisitely designed, can prevent foreign matter from affecting the water channel seal, and reduce the possibility of water leakage caused by poor sealing.

[0046] The drainage sealing valve of the present invention seals the drainage outlet at the bottom of the rotary drum of the washing machine. When the drainage outlet is sealed, the movement of the rotary drum is not affected. During the washing process, the rotation of the rotary drum can be used to enhance the washing water flow, thereby relatively improving the washing efficiency.

[0047] The drainage sealing valve of the washing machine of the present invention has the advantages of simple structure, reliable drainage and sealing performance, etc.

[0048] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0050] Figure 1 Schematic diagram of the normally closed state of the drainage sealing valve of the washing machine of the present invention;

[0051] Figure 2 Schematic diagram of the washing machine drainage sealing valve in the open state of the present invention;

[0052] Figure 3 It is a schematic diagram of the assembly structure of the rotary barrel and the drainage sealing valve of the present invention;

[0053] Figure 4 yes Figure 3 A magnified schematic diagram of part A in FIG.

[0054] Figure 5 yes Figure 4 Schematic diagram of the middle drainage sealing valve in the open state.

[0055] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0057] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] like Figures 1 to 5 As shown, according to an embodiment of the present invention, a drain sealing valve is installed on a washing machine, the washing machine comprises a rotating tub 1 having a water holding function, a drain outlet (not shown in the figure) is provided at the bottom of the rotating tub 1, a drain sealing valve 2 is installed corresponding to the drain outlet, and a water collecting device for collecting washing water discharged from the drain outlet is provided outside the rotating tub 1, such as an outer tub 3. The drain sealing valve 2 comprises a valve body 4, a valve plug 5 provided in the valve body 4, and a first force providing unit 6 providing force to the valve plug 5 to normally close the water path of the valve body, and a second force providing unit 7 provided outside the valve body 4 to drive the valve plug 5 to move to open the water path of the valve body 4, the valve body 4 is installed in the drain outlet of the rotating tub 1, and the second force providing unit 7 is provided on the water collecting device below the drain outlet, such as the bottom of the outer tub 3 (see Figure 1 and Figure 2 ).

[0060] The force provided by the second force providing unit 7 to the valve plug 5 is greater than the sum of the force provided by the first force providing unit 6 to the valve plug 5 and the pressure exerted on the valve plug by the maximum water level of the washing machine.

[0061] First, a drain sealing valve 2 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0062] like Figures 1 to 5As shown, the drain sealing valve 2 according to the embodiment of the present invention includes a valve body 4 and a valve plug 5. A cavity 43 is defined in the valve body 4 to form a water path from the water inlet end 41 to the water outlet end 42. The valve plug 5 is movably arranged in the cavity 43. A first force providing unit 6 is also installed in the cavity 43 to provide the valve plug 5 with a force to normally close the valve body water path. The drain sealing valve 2 also includes a second force providing unit 7 to provide the valve plug 5 with a force to open the valve body water path. The second force providing unit 7 is arranged outside the valve body 4. The force provided by the first force providing unit 6 to the valve plug 5 to normally close the valve body water path is hereinafter referred to as the first force, and the force provided by the second force providing unit 7 to the valve plug 5 to open the valve body water path is hereinafter referred to as the second force.

[0063] The first force and the second force are in opposite directions, corresponding to the direction from the water inlet end 41 to the water outlet end 42 and the reverse direction thereof. The valve plug 5 moves linearly in the cavity 43 between the water inlet end 41 and the water outlet end 42. This structure enables the valve plug to move more smoothly in the cavity, with a higher force utilization rate, and better open and close the waterway in the valve body.

[0064] The first force providing unit 6 is disposed in a cavity 43 between the water inlet end 41 and the valve plug 5 ; the first force providing unit 6 provides a reverse force of the first force of the valve plug 5 to act on the water inlet end 41 .

[0065] The valve body cavity 43 cooperates with the valve plug 5 to form a water outlet waterway from the water inlet end 41 to the water outlet end 42, which includes a first waterway from the water inlet end 41 to the valve plug 5, a second waterway between the outer periphery of the valve plug 5 and the inner wall of the cavity 43, and a third waterway between the end surface of the valve plug 5 close to the water outlet end 42 and the water outlet end 42 (see Figure 5 ). The first waterway and the second waterway are passages, the valve plug 5 normally closes the third waterway, and the first force always acts on the valve plug 5, so that the valve plug 5 is close to the water outlet end 42 and closes the third waterway; when the second force is applied to the valve plug 5, the valve plug 5 overcomes the first force and the pressure of the water, and the valve plug 5 moves toward the water inlet end 41, opening the third waterway, and the water outlet waterway is completely connected.

[0066] In order to prevent the valve plug 5 from moving out of position when the water path is opened, a guide structure is provided between the valve plug 5 and the valve body 4 to limit the movement of the valve plug 5 in a predetermined direction between the water inlet end 41 and the water outlet end 42 .

[0067] Furthermore, in order to reduce the damage to the first force providing unit 6 and the water inlet end 41 caused by excessive movement of the valve plug 5 when opening the water circuit, and at the same time avoid the water flow rate of the first water circuit from becoming smaller, thereby reducing the water outlet flow rate of the sealing valve, a blocking structure is also provided in the valve body 4 to limit the movement of the valve plug 5 to a certain position.

[0068] The drain sealing valve 2 according to the embodiment of the present invention can realize the opening and closing of the drain outlet of the rotary barrel. Specifically, the force provided to the valve plug 5 by the first force providing unit 6 and the second force providing unit 7 is used to realize the closing and opening of the water outlet waterway of the drain sealing valve. Compared with the structure of the related art that uses a driving mechanism to drive the valve plug to close the drain outlet, the structure is simpler, and the force transmission path is simplified, making the transmission simpler, thereby reducing the requirements for matching accuracy, and greatly improving the stability of the action conversion. In addition, the first force providing unit 6 is used to provide the valve plug 5 with the first force to close the water outlet waterway. The provision of the first force is more continuous and reliable, and is affected by the water pressure of the inlet water. The more water is inlet, the better the sealing, so that the sealing effect is more reliable. Therefore, the drain sealing valve for washing machines according to the embodiment of the present invention has the advantages of simple structure, stable transmission, and reliable sealing.

[0069] In an embodiment of the washing machine of the present invention, in order to enhance the precise positioning between the second force providing unit 7 and the valve plug 5 during drainage, the washing machine also includes a positioning device for rotating the rotating barrel 1 to a certain position, for example, a locking mechanism (not shown in the figure) for limiting the movement of the rotating barrel, and the locking mechanism can be switched between a state of limiting the rotation of the rotating barrel and a state of allowing the rotating barrel to rotate. The locking mechanism is installed on the outer barrel, or a part of the locking mechanism is installed on the rotating barrel and the other part is installed on the outer barrel.

[0070] Specifically, during the water intake and washing process of the washing machine, the drain sealing valve plug installed at the bottom of the rotating drum 1 closes the water outlet waterway, and the washing water is completely sealed in the rotating drum 1, and only the rotating drum 1 contains water. During the washing process, the washing machine can control the rotating drum 1 to rotate in at least one direction, for example, the rotating drum 1 and the impeller 8 can be controlled to rotate in opposite directions to achieve a dual-power washing effect, or the rotation of the rotating drum 1 can be uncontrolled, so that the rotating drum 1 is in a free state and rotates freely under the influence of the tumbling of the clothes in the drum and the flow of water; when the washing is completed and the rotating drum 1 is drained, the locking mechanism switches to a state of restricting the rotation of the rotating drum 1, and the rotating drum 1 is stopped. At this time, the rotating drum 1 is in a stationary state, and the second force provided by the second force providing unit 7 causes the valve plug 5 to move to open the water outlet waterway and start draining. Most of the sediments such as mud, lint, particles, dirt, etc. are discharged through the water outlet waterway in the valve body 4. After drainage is completed, the locking mechanism releases the positioning restriction on the rotating tub 1, and the second force providing unit 7 also retracts the second force provided to the valve plug 5 to open the water outlet waterway. The valve plug 5 is only affected by the first force providing unit, resets and recloses the water outlet waterway, the drain port of the rotating tub 1 is closed, and dehydration begins. The washing machine controls the rotating tub 1 to rotate in one direction at a high speed higher than the rotation speed during washing. Under the influence of centrifugal force, the water in the clothes is thrown out and rises along the inner wall of the rotating tub to the upper dehydration hole for discharge.

[0071] The locking mechanism and the dehydration principle are known to those skilled in the art, such as the introduction to the background technology of the present invention, and will not be repeated here.

[0072] Embodiment 1

[0073] like Figure 4 and Figure 5 As shown, the valve body 4 described in this embodiment includes a first cover 44 and a second cover 45. The first cover 44 is provided with a water hole 441 to form the water inlet end 41; the second cover 45 is connected to the first cover 44, and the two covers cooperate to form the cavity 43. A water outlet 451 is provided in the direction opposite to the water inlet end 41 to form the water outlet end 42.

[0074] Preferably, the second cover 45 has a groove 452, the first cover 44 is installed on the opening of the groove 452, the cavity 43 is formed inside, the bottom of the groove is provided with a water outlet 451, forming the water outlet 42, a gap is formed between the outer periphery of the valve plug 5 and the side wall of the groove 452 to form a second water path, the valve plug 5 is controlled to be away from the bottom of the groove so that a third water path connecting the second water path and the water outlet is formed between the valve plug 5 and the bottom of the groove. The size of the water outlet 451 is sufficient to allow the second force provided by the second force providing unit 7 to act on the valve plug 5.

[0075] Embodiment 2

[0076] like Figure 5 As shown, on the basis of the first embodiment, the side wall of the groove 452 of the second cover 45 and the outer periphery of the valve plug 5 in this embodiment are provided with a guide structure for limiting the movement of the valve plug 5 along a predetermined track between the water inlet end 41 and the water outlet end 42. The guide structure includes a guide groove 46 and a guide protrusion (not shown in the figure) located in the guide groove, which are respectively provided on the side wall of the groove 452 and the outer periphery of the valve plug 5, and the guide groove 46 is provided along the direction in which the valve plug 5 moves.

[0077] Furthermore, a blocking structure is provided on the side wall of the groove 452 near the water inlet end 41 to limit the valve plug 5 to move to a certain position; the blocking structure limits the distance between the valve plug 5 and the water inlet end 41 to meet the set first water passage water flow rate. Specifically, the groove 452 is a groove structure with a stepped inner diameter, the inner diameter R of the groove near the water outlet end is greater than the inner diameter r of the groove near the water inlet end, the position where the groove inner diameter changes stepwise forms the blocking structure 9, and the diameter D of the valve plug 5 satisfies: r<D<R, and the difference between R and D satisfies the set second water passage water flow rate.

[0078] Embodiment 3

[0079] like Figure 4As shown, the first force providing unit 6 described in this embodiment is a compression spring, one end of which is supported and connected to the valve plug 5 to provide elastic force to support the normally closed water outlet end 42 of the valve plug 5, and the other end is supported and connected to the first sealing cover 44.

[0080] In order to ensure that the valve plug 5 is evenly stressed, the compression spring 6 has a truncated cone structure, and the diameter of one end supported on the first cover 44 is smaller than the diameter of the other end supported on the valve plug 5. This structure can reduce the misalignment caused by the movement of the valve plug; the first cover 44 is provided with a positioning boss 442, and the valve plug 5 is provided with an annular limiting groove 51. One end of the compression spring 6 is sleeved on the positioning boss 442, and the other end is provided in the limiting groove 51.

[0081] Embodiment 4

[0082] like Figure 3 and Figure 4 As shown, the valve plug 5 described in this embodiment has a force-bearing portion 52 for receiving the first force and a sealing portion 53 for closing the third waterway, the force-bearing portion 52 is connected to the sealing portion 53, the force-bearing portion 52 is arranged on the side close to the water inlet end 41, and the sealing portion 53 is arranged on the side close to the water outlet end 42.

[0083] Preferably, the sealing portion 53 has a certain elastic deformation to maintain the seal with the water outlet 42. On the contrary, in order to maintain the force direction of the force-bearing portion 52 and avoid force misalignment causing the valve plug to deviate from the moving path, the hardness of the force-bearing portion is greater than the hardness of the sealing portion.

[0084] Since the second force is in opposite directions to the first force, the second force providing unit 7 is disposed outside the valve body 4 (see Figure 1 and Figure 2 ), therefore, the sealing portion 53 is also used to receive the second force. In order to reduce the damage to the valve plug sealing portion 53 caused by the second force, the thickness at the force-bearing position of the sealing portion 53 is designed to be greater than the thickness at other positions. In order to further maintain the end face sealing effect between the sealing portion and the water outlet end, the portion with increased thickness corresponds to the water outlet 451 of the water outlet end 42.

[0085] Preferably, the force-bearing portion 52 and the sealing portion 53 are connected in abutting relation, or the force-bearing portion 52 and the sealing portion 53 are connected as one piece, or the force-bearing portion 52 and the sealing portion 53 are an integral structure.

[0086] Embodiment 5

[0087] like Figure 1 and Figure 2 As shown, the second force providing unit 7 described in the present invention includes a lifting member 71 and a driving member 72. The lifting member 71 lifts the valve plug 5 to move toward the water inlet end 41 to open the valve body water path. The driving member 72 is a power component that drives the lifting member 71 to lift the valve plug 5.

[0088] Furthermore, the lifting member 71 includes a lifting rod and a waterproof cover 711 sleeved outside the lifting rod, the lifting rod is connected to the driving member, and the waterproof cover extends from the top of the lifting rod to at least surround the connection position between the lifting rod and the driving member. Preferably, the waterproof cover 711 is configured as a corrugated cover structure (see Figure 3 ).

[0089] The driving member structure is known to those skilled in the art, such as the driving structure for driving the locking rod in the background technology of the present invention and the driving structure for driving the rod-shaped component to extend and retract in the prior art, which will not be described in detail here.

[0090] In some specific examples in which the drainage sealing valve of the present invention can be applied, the drainage port is arranged on the side wall of the rotating barrel and is located at the bottom of the rotating barrel, and the valve body is installed in the drainage port of the side wall of the rotating barrel. For washing machines, since the bottom space is usually tight due to the installation of motors, clutches and other devices, the present invention can utilize the space on the side of the washing machine by arranging the drainage sealing valve on the side, thereby reducing the occupation of the bottom space, increasing the usable amount of the bottom space of the washing machine, and facilitating the arrangement of the components at the bottom of the washing machine. In addition, the drainage sealing valve is arranged on the side, which can reduce the influence of the vibration of the washing machine on the drainage sealing valve, thereby further improving the reliability of drainage and sealing.

[0091] In addition, the drainage sealing valve of the present invention is not limited to washing machines, but can also be used in other water containers that require drainage.

[0092] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A drainage sealing valve, comprising a valve body and a valve plug, characterized in that: The valve body comprises: The first sealing cover is provided with a water through hole to form a water inlet end; A second cover is connected to the first cover, the second cover has a groove, the first cover is installed on the opening of the groove, a cavity is formed inside, and a water outlet is provided at the bottom of the groove to form a water outlet; The valve plug is movably arranged in the cavity, and the cavity has a water outlet waterway from the water inlet end to the water outlet end, including a first waterway from the water inlet end to the valve plug, a second waterway formed by the gap between the outer periphery of the valve plug and the side wall of the groove, and a third waterway connecting the second waterway and the water outlet by controlling the valve plug to be away from the bottom of the groove so that the valve plug and the bottom of the groove are formed; A first force providing unit is installed in the cavity to provide a force for the valve plug to normally close the third water channel; the first force providing unit is a compressed elastic support member, one end of which supports and connects the valve plug to provide elastic force to support the normally closed water outlet end of the valve plug, and the other end of which supports and connects the first cover; The valve plug has a force-bearing portion for receiving the force of the normally closed third waterway provided by the first force providing unit and a sealing portion for closing the waterway of the valve body, the force-bearing portion is connected to the sealing portion, the force-bearing portion is arranged on the side close to the water inlet end, the sealing portion is arranged on the side close to the water outlet end, and the hardness of the force-bearing portion is greater than the hardness of the sealing portion; The drainage sealing valve also includes a second force providing unit that provides force for the valve plug to open the third water channel, and the second force providing unit is arranged outside the valve body.

2. The drain sealing valve according to claim 1, characterized in that: A guide structure is provided between the valve plug and the valve body to limit the movement of the valve plug along a predetermined direction between the water inlet end and the water outlet end.

3. The drainage sealing valve according to claim 1, characterized in that: The valve body is also provided with a blocking structure for limiting the movement of the valve plug to a certain position.

4. The drain sealing valve according to claim 1, characterized in that: The side wall of the groove and the outer periphery of the valve plug are provided with a guide structure for limiting the movement of the valve plug along a predetermined track between the water inlet end and the water outlet end.

5. The drainage sealing valve according to claim 4, characterized in that: The guide structure comprises a guide groove and a guide protrusion located in the guide groove, which are respectively arranged on the side wall of the groove and the outer periphery of the valve plug.

6. The drain sealing valve according to claim 1, characterized in that: A blocking structure for limiting the movement of the valve plug to a certain position is provided on the side wall of the groove close to the water inlet end.

7. The drain sealing valve according to claim 6, characterized in that: The blocking structure is a blocking convexity arranged on the side wall of the groove, or the groove is a groove body structure with a stepped inner diameter, and the inner diameter of the groove near the water outlet is larger than the inner diameter of the groove near the water inlet.

8. The drainage sealing valve according to any one of claims 1 to 7, characterized in that: The elastic support member is a compression spring, and two ends thereof are respectively limitedly supported on the first sealing cover and the valve plug.

9. The drainage sealing valve according to claim 8, characterized in that: The compression spring is in a truncated cone structure, and the diameter of one end supported on the first cover is smaller than the diameter of one end supported on the valve plug.

10. The drainage sealing valve according to claim 9, characterized in that: The first sealing cover is provided with a positioning boss, the valve plug is provided with an annular limiting groove, one end of the compression spring is sleeved on the positioning boss, and the other end is arranged in the limiting groove.

11. The drainage sealing valve according to any one of claims 1 to 7, characterized in that: The force-bearing portion of the valve plug is in contact with the sealing portion, or the force-bearing portion is integrally connected with the sealing portion.

12. The drainage sealing valve according to any one of claims 1 to 7, characterized in that: The second force providing unit provides the force for the valve plug to open the water path of the valve body along the direction from the water outlet end to the water inlet end.

13. The drain sealing valve according to claim 12, characterized in that: The second force providing unit comprises: A lifting member, which lifts the valve plug to move toward the water inlet end to open the water path of the valve body; A driving member is a component that drives the lifting member to lift the valve plug.

14. A washing machine comprising a rotating tub, characterized in that: A drain outlet is provided at the bottom of the rotating barrel, and a drain sealing valve as described in any one of claims 1-13 is installed corresponding to the drain outlet.

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