A spool structure, a centrifugal valve and a washing machine

Abstract

The present invention discloses a spool structure, which includes a spool and a valve plug column; the spool is flexibly connected to the valve plug column, and the spool can generate an adjustment displacement with a certain inclination angle relative to the valve plug column. The present invention also provides a centrifugal valve, including: a bracket; the above-mentioned spool structure is installed on the bracket, and the valve plug column of the spool structure is correspondingly inserted into the installation sleeve of the bracket; the spool is located below the installation sleeve. The present invention also provides a washing machine, which includes: a drum; a drain port is provided on the drum, and the above-mentioned centrifugal valve is provided on the drum, and the spool of the centrifugal valve is correspondingly arranged at the drain port on the drum. By flexibly connecting the spool and the valve plug column, certain deformation and / or movement displacement can be generated between the spool and the valve plug column, so that the spool can move to the corresponding position under the guiding action of the drain port and completely block the drain port, thereby improving the sealing performance of the centrifugal valve.

Description

Technical Field

[0001] The present invention belongs to a washing machine in the field of washing machines, which adopts a perforation-free drum and is self-cleaning. Specifically, it designs a centrifugal valve structure for a washing machine, and particularly relates to a valve core structure of a centrifugal valve that can improve the sealing performance. Background Art

[0002] In the prior art, a drum washing machine generally includes a drum and an outer tub that are sleeved with each other. The outer tub is sealed for holding water, and the drum is used for holding clothes and rotates the drum to beat and wash the clothes; at the same time, dehydration holes are provided on the drum so that the water in the outer tub flows into the drum through the dehydration holes to soak the clothes in the drum, the water in the drum flows out of the drum through the dehydration holes to the outer tub, and the water on the clothes in the drum is discharged to the outer tub through the dehydration holes when the drum rotates at a high speed, so as to achieve the purpose of washing the clothes.

[0003] However, since the drum and the outer tub are sleeved with each other, dirt is likely to accumulate between the inner and outer tubs during the use of the washing machine; at the same time, since the inner and outer tubs are sleeved with each other, users cannot clean the outer wall of the drum and the inner wall of the outer tub, which increases the bacteria inside the washing machine and reduces the washing efficiency of the washing machine and the cleanliness of the clothes after washing.

[0004] At the same time, in the above-mentioned existing washing machines, since the outer tub is sleeved outside the drum, the washing process of the washing machine is to beat and wash the clothes by rotating the drum, so that the washing capacity of the washing machine is based on the drum, resulting in a low utilization rate of the internal space of the washing machine and making it impossible to expand the washing capacity of the washing machine on the existing basis.

[0005] In view of this, how to set a washing machine to combine the inner and outer tubs, make the drum a sealed container that can both hold water and clothes and rotate to beat and wash the clothes; at the same time, since the washing machine does not have an outer tub or the outer tub is integrally provided with the washing machine housing, the drum of the washing machine can also be enlarged to expand the washing capacity of the washing machine, which has become a research and development hotspot.

[0006] However, since the drum is not only used for holding washing water but also rotates to beat and clean the clothes in the drum, how to set a dehydration structure and a drainage structure suitable for the above-mentioned washing machine has become a difficult problem to be solved urgently.

[0007] Some existing technical solutions disclose valve body structures applied to self-cleaning washing machines. However, since there will be a certain assembly error after the existing valve body structure is assembled on the washing machine drum, there will be a certain deviation between the valve core and the drainage port on the drum, which is likely to cause the situation that the valve core cannot completely close the drainage port. In particular, after the washing machine is used for a certain period of time, the valve core will be affected by the water flow impact during use and the stress during opening and closing operations, resulting in displacement of the valve core and reducing the sealing performance of the valve core.

[0008] In view of this, the present invention is hereby proposed. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a spool structure to achieve the purpose of improving the sealing performance of the spool. The present invention also provides a centrifugal valve and a washing machine to achieve the purpose of automatically aligning the spool with the drain port and improving the sealing performance at the drain port of the holeless drum.

[0010] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0011] The present invention provides a spool structure, which includes a spool and a valve plug column; the spool and the valve plug column are flexibly connected, and the spool can generate an adjustment displacement with a certain inclination angle relative to the valve plug column.

[0012] Further, a groove is provided at the end of the valve plug column, the spool is provided with a plugging portion corresponding to be inserted into the groove, a spring is provided in the groove, and both ends of the spring are respectively connected to the plugging portion and the groove.

[0013] Further, the plugging portion includes a connecting rod extending along the axial direction of the groove, one end of the connecting rod is connected to the sealing member of the spool, and the other end is connected with a limiting disc. The limiting disc is coaxially arranged with the connecting rod and extends along the radial direction of the groove. The limiting disc is correspondingly inserted into the groove, and the end of the spring is connected to the limiting disc;

[0014] Preferably, the radial dimension of the limiting disc is equal to the radial dimension of the groove;

[0015] Preferably, the axial height of the limiting disc is less than the depth of the groove.

[0016] Further, a circle of radially protruding ribs is provided at the opening of the groove. The inner circumference dimension of the ribs is smaller than the radial dimension of the limiting disc and larger than the radial dimension of the connecting rod;

[0017] Preferably, the spool includes a sealing member, the sealing member is conical or frustum-shaped, the large end of the sealing member is coaxially connected to one end of the connecting member, and the radial dimension of the large end of the sealing member is larger than the radial dimension of the inner circumference of the ribs.

[0018] Further, the spring in the groove is in a compressed state, the spring extends along the axial direction of the groove, and both ends of the spring are respectively in contact with the bottom of the groove and the limiting disc.

[0019] The present invention also provides a centrifugal valve, including: a bracket; the above-mentioned spool structure is installed on the bracket. The bracket includes a mounting sleeve, and the valve plug column of the spool structure is correspondingly inserted into the mounting sleeve of the bracket; the spool is located below the mounting sleeve.

[0020] Further, a return spring sleeved around the outer periphery of the valve plug column is provided inside the installation sleeve, and two ends of the return spring are respectively connected to the installation sleeve and the valve core.

[0021] Further, the upper end of the valve plug column passes through the installation sleeve; a counterweight block rotatably connected is provided on the installation sleeve, a connecting rib protruding and extending is provided at one end of the counterweight block, the middle of the connecting rib is connected to the installation sleeve through a rotating shaft, and the end of the connecting rib is connected to the upper end of the valve plug column;

[0022] Preferably, a connecting shaft is provided at the upper end of the valve plug column, a long strip-shaped through hole with a strip-shaped cross section is provided at the second end of the centrifugal member, the connecting shaft correspondingly passes through the long strip-shaped through hole, and the centrifugal member and the valve plug column can rotate and / or move relative to each other.

[0023] The present invention also provides a washing machine, which includes: a drum; a drain port is provided on the drum, and the centrifugal valve described in any one of the above is provided on the drum, and the valve core of the centrifugal valve is correspondingly arranged at the drain port on the drum.

[0024] Further, at least one lifting rib protruding radially towards the axis of the drum is provided on the side wall of the drum, a hollow installation cavity is formed inside the lifting rib, a water permeable hole communicating the installation cavity with the drum is provided on the lifting rib, the centrifugal valve is correspondingly installed in the hollow installation cavity inside the lifting rib, the drain port is provided on the side wall of the drum at the corresponding buckling position of the lifting rib, and the valve core of the centrifugal valve correspondingly seals the drain port.

[0025] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art:

[0026] By flexibly connecting the valve core and the valve plug column, certain deformation and / or displacement can be generated between the valve core and the valve plug column, so that the valve core can move to the corresponding position under the guiding action of the drain port and completely seal the drain port, thereby improving the sealing performance of the centrifugal valve.

[0027] Through the above settings, the valve core can be offset and tilted relative to the valve plug column, so that the valve core is correspondingly closed with the drain port after generating an adjustment displacement, so as to achieve the effect of automatically adjusting the displacement of the valve core and improving the sealing performance of the valve core.

[0028] At the same time, the structure of the present invention is simple, the effect is remarkable, and it is suitable for popularization and use.

[0029] The following further describes in detail the specific embodiments of the present invention with reference to the drawings. Description of the Drawings

[0030] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0031] Figure 1 is a schematic structural diagram of a washing machine in an embodiment of the present invention;

[0032] Figure 2 is a schematic structural diagram of a lifting rib in an embodiment of the present invention;

[0033] Figure 3 is in an embodiment of the present invention Figure 2 schematic cross-sectional structure diagram of A-A.

[0034] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Such as Figures 1 to 3As shown, an embodiment of the present invention introduces a washing machine, which includes: a housing 100, inside which there is a drum 1. The axis of the drum 1 extends horizontally or gradually slopes downward from front to back. The front end of the drum 1 is an open drum opening 101, and the rear end is a sealed drum bottom 102. The drum side wall 103 connects the drum opening 101 and the drum bottom 102 to form the drum 1. There are no through holes on the wall of the drum 1, so that the inside of the drum 1 forms a sealed container with only the front opening. At the same time, a door 300 that can be opened outward is installed at the front end of the washing machine housing 100, so as to close the drum opening 101 after the door 300 is closed and to put clothes into the drum 1 from the drum opening 101 after the door 300 is opened.

[0039] In an embodiment of the present invention, the rear end of the drum 1 is installed in the washing machine housing 100 through a drum support member 200. The drum support member 200 is bent at its upper and lower ends towards the front end opening direction of the drum 1, and the bent part extends at least to the middle of the drum 1. The upper and lower bent parts are respectively connected to the washing machine housing 100 through shock-absorbing suspension springs and shock-absorbing support rods, so as to achieve the purpose that the drum support member 200 can be installed in the washing machine housing 100 in a vibration-proof manner. At the same time, the center of the drum bottom 102 is coaxially arranged with the motor shaft of the washing machine drive motor 400 to drive the drum 1 to rotate. Both the drum 1 and the drive motor 400 are fixedly installed on the drum support member 200. Preferably, the drum bottom 102 and the drive motor 400 are respectively arranged on both sides of the drum support member 200. The drive motor 400 is fixedly connected to the drum support member 200. The motor shaft of the drive motor 400 passes through the drum support member 200 through a bearing and is coaxially and fixedly connected to the drum bottom 102, and the motor shaft of the drive motor 400 can rotate relative to the drum support member 200, so as to achieve the purpose that the drum 1 and the drive motor 400 are installed on the drum support member 200 and the drum 1 can rotate independently under the action of the drive motor 400 to wash the internal clothes. Preferably, the motor shaft of the drive motor 400 directly forms the drum shaft, and the drum shaft is coaxially and fixedly connected to the drum bottom 102 of the drum 1.

[0040] Of course, the drum support member 200 in the embodiment of the present invention can be directly set as the ordinary outer drum of the washing machine, and the drum 1 is sleeved inside the outer drum, which can also achieve the effects of supporting the drum, collecting and draining water and discharging it outside.

[0041] In addition, the washing machine in the embodiments of the present invention can be any washing machine in the prior art that forms a sealed container with the drum when the door cover closes the drum opening, so as to control the high-speed rotation of the drum when the washing machine executes the dehydration program, so as to smoothly discharge the water flow separated from the clothes in the drum out of the drum, thereby achieving the purpose of normally executing the dehydration program for the washing machine with a drum without holes. Therefore, the washing machine in the embodiments of the present invention is not limited to the structure in the drawings. For example, an existing ordinary washing machine can be used, and only the washing machine drum 1 needs to be set as a washing machine without dehydration holes and forms a sealed container after the door cover closes the drum opening 101.

[0042] At the same time, by setting the drum to form a sealed container when the door cover is buckled and the washing machine is washing, it is ensured that the clothes only contact the washing water in the sealed drum during the washing process, avoiding the situation that the washing water between the inner and outer drums flows into the drum and contaminates the clothes, greatly improving the washing cleanliness of the washing machine, and avoiding the situation that the washing machine fails to clean the clothes thoroughly due to the contamination of the inner and outer drums by the washing water.

[0043] In the embodiments of the present invention, in order to drain the water flow separated from the clothes in the washing machine drum 1 and realize the normal washing with the drum 1 sealed to hold water during the working process of the washing machine, the following settings are made:

[0044] In the embodiments of the present invention, in order to realize the dehydration and drainage functions of the drum forming a sealed container, any existing dehydration and drainage structure can be provided on the drum 1. For example, a drainage port 4 is provided on the side wall 103 of the drum, and a centrifugal valve 500 is correspondingly installed at the drainage port, so that when the drum 1 rotates at a high speed, the valve core of the centrifugal valve is opened under the action of centrifugal force, and when the drum rotates at a low speed, the valve core of the centrifugal valve is closed at the drainage port under the braking force of itself and / or the reset device.

[0045] However, due to assembly errors and / or stress during the use of the washing machine, a certain deviation will occur between the valve core 24 of the centrifugal valve 500 and the drainage port 4 on the drum 1, which easily causes the situation that the valve core 24 cannot completely seal the drainage port 4. In view of this, a valve core structure is specifically proposed in this application. The valve core structure includes a valve core 24 and a valve plug column 5. The valve core 24 and the valve plug column 5 are flexibly connected, so that a certain deformation and / or displacement can occur between the valve core 24 and the valve plug column 5, enabling the valve core 24 to move to the corresponding position under the guiding action of the drainage port 4 and completely block the drainage port 4, thereby improving the sealing performance of the centrifugal valve 500.

[0046] Embodiment 1

[0047] Such as Figures 1 to 3As shown, in this embodiment, a spool structure is introduced, which includes a spool 24 and a valve plug column 5; the spool 24 is flexibly connected to the valve plug column 5, and the spool 24 can generate an adjustment displacement with a certain inclination angle relative to the valve plug column 5. Through the above settings, the spool can be offset and inclined relative to the valve plug column, so that after the spool generates an adjustment displacement, it corresponds to the drain port to be closed, so as to achieve the effects of automatic displacement adjustment of the spool and improvement of the sealing performance of the spool.

[0048] In this embodiment, a groove 51 is provided at the end of the valve plug column 5, the spool 24 is provided with a plug-in portion 241 corresponding to be inserted into the groove 51, and a spring 52 is provided in the groove 51. The two ends of the spring 52 are respectively connected to the plug-in portion 241 and the groove 51.

[0049] Through the above settings, the valve plug column and the spool are connected by plugging, so that relative offset can occur between the valve plug column and the spool through the plugging gap, thereby achieving the effect of providing a clearance space for the displacement adjustment of the spool; at the same time, a spring is clamped between the spool and the valve plug column, so that the spool can be kept in an outward extending state under the action of the spring, and the spool is made to fit corresponding to the drain port under the elastic force of the spring, so as to achieve the effect of corresponding closing of the drain port by the spool.

[0050] In this embodiment, the plug-in portion 241 includes a connecting rod 242 extending along the axial direction of the groove 51. One end of the connecting rod 242 is connected to the seal 244 of the spool 24, and the other end is connected with a limiting disk 243. The limiting disk 243 is coaxially arranged with the connecting rod 242 and extends along the radial direction of the groove 51. The limiting disk 243 is correspondingly inserted into the groove 51, and the end of the spring 52 is connected to the limiting disk 243. By providing the plug-in portion 241 composed of the connecting rod 242 and the limiting disk 243 on the spool 24, the plug-in portion 241 of the spool 24 can be correspondingly inserted into the groove 51 to achieve plugging connection; also, through the axially extending connecting rod 242, the spool 24 can protrude from the connecting rod 242, providing a moving space for the axial movement of the spool 24; at the same time, a limiting disk 243 is provided in the groove 51 to increase the contact area between the spool 24 and the spring 52 and improve the stability of the elastic force of the spring 52, thereby preventing the spool 24 from shifting and even affecting the sealing performance of the centrifugal valve 500.

[0051] Preferably, in this embodiment, the radial dimension of the limiting disk 243 is equal to the radial dimension of the groove 51 to ensure the relative stability of the position of the limiting disk 243 in the groove 51; at the same time, the dimension of the limiting disk 243 is made as large as possible to increase the contact area with the spring 52 and improve the stability of the spool 24.

[0052] In this embodiment, the axial height of the limiting disk 243 is less than the depth of the groove 51; even more, the axial height of the limiting disk 243 needs to be much less than the depth of the groove 51 to provide sufficient space margin for the offset of the spool 24 and the inclination of the limiting disk 243.

[0053] In this embodiment, a ring of radially protruding retaining ribs 53 is provided at the opening of the groove 51. The size of the inner circumference of the retaining ribs 53 is smaller than the radial size of the limiting disc 243 and larger than the radial size of the connecting rod 242. Thus, under the blocking action of the retaining ribs 53, when the spring 52 pushes the limiting disc 243, the limiting disc 243 is restricted to the contact position with the retaining ribs 53, avoiding the situation that the limiting disc 243 slides out of the groove 51 and causing the valve core 24 to be disengaged from the valve plug column 5.

[0054] Preferably, the valve core 24 includes a sealing member 244. The sealing member 244 is conical or frustoconical. The large end of the sealing member 244 is coaxially connected to one end of the connecting rod 242. The radial size of the large end of the sealing member 244 is larger than the radial size of the inner circumference of the retaining ribs 53, so as to avoid the situation that the sealing member 244 slides into the groove and causing the valve core 24 to be restricted by the retaining ribs 53 and unable to reset.

[0055] In this embodiment, the insertion part 241 further includes a fixing rod 245 that is horizontally extended and connected to the lower end of the connecting rod 242. The sealing member 244 is fixedly installed on the fixing rod 245. The sealing member 244 is made of an elastic sealing material, such as rubber, etc.; the insertion part 241 is an integral part made of a material with a certain rigidity, such as plastic, metal, etc.

[0056] In this embodiment, the spring 52 in the groove 51 is in a compressed state. The spring 52 extends along the axial direction of the groove 51. The two ends of the spring 52 are respectively in contact with the bottom of the groove 51 and the limiting disc 243.

[0057] Embodiment Two

[0058] As Figures 1 to 3 shown, in this embodiment, a centrifugal valve structure is introduced. The centrifugal valve 500 adopts the valve core structure described in the above Embodiment One; the centrifugal valve includes a valve plug column 5 correspondingly installed at the drainage port provided on the side wall 103 of the drum 1. The valve plug column 5 is coaxially arranged with the corresponding drainage port 4; a counterweight 7 hinged to the upper end of the valve plug column 5. The lower end of the valve plug column 5 is connected to the valve core 24, and the valve core 24 correspondingly closes the drainage port 4; a centrifugal valve installation structure is fixedly installed on the side wall 103 of the drum. A return spring 32 is clamped between the centrifugal valve installation structure and the valve core structure.

[0059] By installing the above centrifugal valve on the drum, the action of correspondingly opening the drainage port can be generated by the counterweight under the action of centrifugal force, and the valve plug column can be pulled back to its original position by the return spring, and the valve core can correspondingly block the drainage port. Furthermore, the purpose of correspondingly opening and closing the drainage port by the action of the centrifugal force generated by the high-speed rotation of the drum on the valve plug column is achieved.

[0060] In this embodiment, the valve plug column 5 is coaxially arranged at the drain port 4, and a valve core 24 protruding radially outward is provided at the lower end of the valve plug column 5; preferably, the valve core 24 is a plug with a radially expanding dimension gradually from bottom to top, and the radial width of the large end of the valve core 24 is greater than the diameter of the drain port 4, and the radial width of the small end is less than the diameter of the drain port 4.

[0061] In this embodiment, the installation structure of the sealing valve includes a support plate 9 installed on the inner side wall of the drum. A through hole 23 corresponding to the drain port 4 provided on the side wall of the drum is provided in the middle of the support plate 9. There is a certain gap between the support plate 9 and the side wall of the drum to form a space for the sealing valve valve core to move up and down; an installation sleeve 6 in the shape of a sleeve is fixedly installed on the upper side of the support plate 9. The inner through hole of the installation sleeve 6 is coaxially opposite to the through hole 23 provided on the support plate 9, so as to coaxially and vertically movably install the valve plug column 5 of the sealing valve in the inner through hole.

[0062] In this embodiment, the installation sleeve 6 is a vertically extending cylindrical structure. The lower end of the installation sleeve 6 is open, and the upper end is provided with a horizontally inwardly protruding flange 27. The inner circumference of the flange 27 is provided with an inner flange 28 extending vertically downward to the lower end of the installation sleeve; there is a certain gap between the outer wall of the inner flange 28 and the inner wall of the flange 27 to form a chamber for installing and fixing the return spring 32 of the sealing valve; preferably, the return spring 32 is sleeved on the outer wall of the inner flange 28. The upper end of the return spring 32 abuts against the lower side of the flange 27, and the lower end of the return spring 32 abuts against the large end of the valve core 24; further preferably, the outer wall of the valve plug column 5 abuts against the inner wall of the inner flange 28 in a limiting manner.

[0063] In this embodiment, a second extension rib 14 protruding horizontally outward is provided on one side of the installation sleeve 6. The extending end of the second extension rib 14 is provided with a hinge hole 31 with a horizontal axis. The counterweight 7 of the sealing valve is hingedly installed with the second extension rib 14 through a pin passing through the hinge hole 31.

[0064] In this embodiment, the upper end of the counterweight 7 is provided with a connecting rib 8 protruding axially upward. The upper end of the valve plug column 5 passes through the top of the installation sleeve 6. The end of the connecting rib 8 is hingedly connected to the upper end of the valve plug column 5; the middle part of the connecting rib 8 corresponds to and overlaps with the second extension rib 14 of the installation sleeve 6 and is hingedly installed through a penetrating pin at the overlapping part; preferably, the extending end of the second extension rib 14 is higher than the top of the installation sleeve 6. The extending end of the second extension rib 14 is provided with a slot 13. The slot 13 is arranged along the extending direction of the second extension rib 14. The middle part of the connecting rib 8 of the sealing valve is correspondingly inserted into the slot 13; a horizontally extending hinge hole 31 is provided at the slot 13, and a corresponding overlapping hinge hole is provided in the middle part of the connecting rib 8, so as to be hingedly installed through a penetrating pin at the overlapping part.

[0065] In this embodiment, a rotating hole hinged to the upper end of the valve plug column 5 is provided at the end of the connecting rib 8. The rotating hole is a long strip-shaped through hole 33 extending along the axis direction of the connecting rib 8, so as to provide a space margin for the connecting rib 8 to drive the valve plug column 5 to move up and down when the counterweight 7 rotates around the mounting sleeve 6.

[0066] Preferably, in this embodiment, the outer diameter of the upper end of the valve core 24 is greater than the lower diameter of the inner folded edge, and the height of the valve core 24 is less than the clearance height between the support plate and the side wall of the drum.

[0067] In this embodiment, when the washing machine is in the dehydration and / or drainage state, the drum is in a high-speed rotation state. The water in the drum flows along the inner wall under the action of centrifugal force and flows into the inside of the lifting rib from the gap between the drum wall and the lifting rib. At this time, the counterweight moves towards the outer circumference of the drum under the action of centrifugal force, and the counterweight provides an upward prying force towards the center of the drum to the valve plug column through the connecting rib. The centrifugal force of the valve core received by the counterweight overcomes the elastic force of the return spring, causing the valve plug column to displace in the radial direction of the drum and open the drain port; when the washing machine is in a non-dehydration and non-drainage state, the drum is not in a high-speed rotation state, the counterweight is no longer affected by centrifugal force, and the return spring is in a pulling state. The return spring acts on the valve plug column with a driving force towards the outer circumference of the drum, causing the valve core to move towards the initial position until the drain port is closed. And when the drum is in the washing or rinsing program, the return spring always provides an elastic force to the valve plug column to ensure that the valve core always blocks the drain port, thereby ensuring that the drain port is always in a closed state.

[0068] Embodiment Three

[0069] As Figures 1 to 3 As shown, in this embodiment, a washing machine is introduced. The washing machine includes a drum, and at least one lifting rib is installed on the side wall of the drum. The drum lifting rib 2 includes a lifting rib body extending along the construction line of the drum side wall. The lifting rib body is a shell structure with an open lower side and buckled on the inner side wall of the drum 1. The inside of the lifting rib body is hollow to form an installation cavity 3 for installing the centrifugal valve described in the second embodiment above. The lifting rib 2 is provided with a water passing structure for guiding the washing water in the drum 1 into the installation cavity 3; the water passing structure includes a plurality of water permeable holes 210 arranged on the lifting rib 2, and each water permeable hole 210 connects the installation cavity 3 inside and outside the lifting rib 2 with the drum 1.

[0070] By setting the drum lifting rib as a hollow chamber, a chamber for installing the drain centrifugal valve is formed inside the lifting rib, so as to achieve the purpose of concealing the assembly of the centrifugal valve and realizing the function of draining water by centrifugal force for a self-cleaning washing machine; at the same time, the lifting rib extends along the construction line of the drum. When the drum rotates, the lifting rib blocks the washing water flowing along the wall, and the blocked washing water flows into the inside of the lifting rib through the water passing structure provided on the lifting rib, so as to achieve the purpose of guiding the water to drain outwards.

[0071] In this embodiment, a plurality of lifting ribs 2 are arranged symmetrically with respect to the axis of the drum 1 on the inner side wall of the drum 1. Drainage openings 4 are provided on the side walls 103 of the drum opposite to each of the lifting ribs 2 respectively, and sealing valves corresponding to the respective drainage openings 4 are provided inside the lifting ribs 2.

[0072] In this embodiment, the plurality of lifting ribs 2 provided on the drum 1 are arranged symmetrically at equal angular intervals, so that the clothes in the drum 1 can be uniformly lifted and beaten by the respective lifting ribs 2 arranged uniformly, thereby improving the washing efficiency of the clothes.

[0073] In this embodiment, the plurality of lifting ribs 2 provided on the drum 1 can also be arranged as follows: each of the lifting ribs 2 is arranged corresponding to the drum door body, so that the center of gravity of the drum 1 is at the central axis, thereby ensuring the balance during the rotation of the drum and improving the smoothness of the drum rotation.

[0074] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A spool structure, which includes a spool and a valve plug column; characterized in that: There is a flexible connection between the valve core and the valve plug column; A groove is provided at the end of the valve plug column, the valve core is provided with a plugging portion correspondingly inserted into the groove, a spring is arranged in the groove, and two ends of the spring are respectively connected with the plugging portion and the groove; The plugging portion includes a connecting rod extending along the axial direction of the groove, one end of the connecting rod is connected with the seal of the valve core, and the other end is connected with a limiting disc. The limiting disc is coaxially arranged with the connecting rod and extends along the radial direction of the groove. The limiting disc is correspondingly inserted into the groove, and the end of the spring is connected with the limiting disc; The axial height of the limiting disc is less than the depth of the groove to provide a space margin for the offset of the valve core and the inclination of the limiting disc.

2. The spool structure according to claim 1, characterized in that, The radial dimension of the limiting disc is equal to the radial dimension of the groove.

3. The spool structure according to any one of claims 1 to 2, characterized in that, A ring of ribs protruding radially is provided at the opening of the groove. The dimension of the inner circumference of the ribs is less than the radial dimension of the limiting disc and greater than the radial dimension of the connecting rod.

4. The spool structure according to claim 3, characterized in that, The valve core includes a seal, the seal is conical or frustum-shaped, the large end of the seal is coaxially connected with one end of the connecting piece, and the radial dimension of the large end of the seal is greater than the radial dimension of the inner circumference of the ribs.

5. The spool structure according to claim 3, characterized in that, The spring in the groove is in a compressed state, the spring extends along the axial direction of the groove, and two ends of the spring are respectively in contact with the bottom of the groove and the limiting disc.

6. A centrifugal valve, comprising: A bracket; characterized in that, the valve core structure described in any one of claims 1 to 5 is installed on the bracket, and the valve plug column of the valve core structure is correspondingly inserted into the installation sleeve of the bracket; the valve core is located below the installation sleeve.

7. The centrifugal valve according to claim 6, characterized in that, A return spring sleeved on the outer periphery of the valve plug column is arranged in the installation sleeve, and two ends of the return spring are respectively connected with the installation sleeve and the valve core.

8. The centrifugal valve according to claim 6, characterized in that, The upper end of the valve plug column penetrates out of the installation sleeve; a counterweight block rotatably connected is arranged on the installation sleeve. One end of the counterweight block is provided with a connecting rib protruding and extending. The middle of the connecting rib is connected with the installation sleeve through a rotating shaft, and the end of the connecting rib is connected with the upper end of the valve plug column.

9. The spool structure according to claim 6, characterized in that, The upper end of the valve plug column is provided with a connecting shaft, and the second end of the centrifugal member is provided with a long strip-shaped through hole with a strip-shaped cross section. The connecting shaft correspondingly passes through the long strip-shaped through hole, and the centrifugal member and the valve plug column can rotate and / or move relative to each other.

10. A washing machine, which includes: A drum; characterized in that, a drain port is provided on the drum, and the centrifugal valve described in any one of claims 6 to 9 is provided on the drum. The valve core of the centrifugal valve is correspondingly arranged at the drain port on the drum.

11. The washing machine according to claim 10, characterized in that, At least one lifting rib protruding radially towards the axis direction of the drum is provided on the side wall of the drum. A mounting cavity is formed inside the lifting rib in a hollow manner. A water permeable hole communicating the mounting cavity with the drum is provided on the lifting rib. The centrifugal valve is correspondingly installed in the mounting cavity inside the lifting rib in a hollow manner. The drain port is arranged on the side wall of the drum at the corresponding buckling position of the lifting rib, and the valve core of the centrifugal valve correspondingly blocks the drain port.

Images