CN111235816B

CN111235816B - Washing machine washing barrel assembly and washing machine

Info

Publication number: CN111235816B
Application number: CN201811435880.XA
Authority: CN
Inventors: 席磊; 周丑国; 余永刚; 苑林枫; 余百乐
Original assignee: TCL Home Appliances Hefei Co Ltd
Current assignee: TCL Home Appliances Hefei Co Ltd
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2021-09-28
Anticipated expiration: 2038-11-28
Also published as: CN111235816A

Abstract

A washing machine washing barrel assembly and a washing machine, the washing machine washing barrel assembly comprises: a big barrel, a big barrel wave wheel and a three-power clutch; the bottom wall of the big barrel is provided with a big barrel through hole; the big barrel impeller is positioned in the big barrel; the three power clutches are provided with three coaxial power output shafts which are respectively a first power output shaft, a second power output shaft and a third power output shaft from outside to inside, the first power output shaft is connected with the big barrel, and the first power output shaft is used for driving the big barrel to rotate; the second power output shaft penetrates through the barrel through hole and is connected with the barrel impeller. According to the washing machine washing barrel assembly, the three-power clutch is used for replacing a traditional DD variable frequency motor, the three-power clutch can provide power drive through a common motor, the cost is lower compared with the expensive DD variable frequency motor, the whole cost of the washing machine can be reduced, and therefore the washing machine with the barrel-in-barrel function can be more easily served to the public due to the lower cost.

Description

Washing machine washing barrel assembly and washing machine

Technical Field

The invention relates to the technical field of impeller washing machines, in particular to a washing machine washing barrel assembly and a washing machine.

Background

At present, in order to solve the problem of cross contamination between clothes cleaned by a traditional washing machine, a barrel-in-barrel washing machine is already available on the market, a detachable small barrel is arranged in a washing large barrel of the traditional pulsator washing machine for washing, the small barrel is used when clothes needing to be washed are separated, such as underwear, socks, infant clothes and the like, and the large barrel is used for washing when large clothes are washed, so that the clothes are separately washed. The patent with the publication number of CN105483974A discloses a washing machine and a washing barrel thereof, wherein the washing barrel comprises a big barrel, a wave wheel and small barrels, an independent small barrel is arranged in the big barrel, the small barrels can be arranged in the big barrel in a mode that a positioning column is matched with a groove or in a mode that the small barrels and the wave wheel are integrally formed to form a barrel-in-barrel structure, special clothes can be placed in the small barrel in the washing process, water in the big barrel cannot enter the small barrels, the water in the small barrels is thrown into the big barrel from the inclined side wall of the small barrel during spin-drying, and flows out along with the water in the big barrel, so that the purpose of independently washing the special clothes is realized; if special clothes do not need to be washed, the small barrel can be detached from the big barrel, and the positioning column and the groove are assembled in a simple, convenient and quick manner.

However, the existing drum-in-drum washing machine still has the following disadvantages: the existing barrel-in-barrel washing machine is mainly driven by a Direct Drive (DD) variable frequency motor, the DD variable frequency motor has a complex structure and high cost, the cost of the whole machine is increased, the price of the barrel-in-barrel washing machine is higher, and the barrel-in-barrel washing machine is difficult to serve the public due to price factors.

Disclosure of Invention

Based on this, it is necessary to provide a washing machine tub assembly capable of reducing costs and a washing machine including the same.

A washing machine tub assembly comprising: a big barrel, a big barrel wave wheel and a three-power clutch; a vat through hole is formed in the bottom wall of the vat; the big barrel impeller is positioned in the big barrel; the three-power clutch is provided with three coaxial power output shafts which are respectively a first power output shaft, a second power output shaft and a third power output shaft from outside to inside, the first power output shaft is connected with the big barrel, and the first power output shaft is used for driving the big barrel to rotate; the second power output shaft penetrates through the large barrel penetrating hole and is connected with the large barrel impeller, and the second power output shaft is used for driving the large barrel impeller to rotate.

In one embodiment, the drum type impeller comprises a drum flange, the drum flange is fixedly connected with the outer side of the bottom wall of the drum, a drum flange penetrating hole is formed in the middle of the drum flange, a first bearing ring is fixed outside the first power output shaft, the first bearing ring is fixedly connected with one surface, far away from the drum, of the drum flange, the first power output shaft drives the drum to rotate through the drum flange, and the second power output shaft sequentially penetrates through the drum flange penetrating hole and the drum penetrating hole and is connected with the drum impeller.

In one embodiment, the first bearing ring is provided with a plurality of fixing holes, the barrel flange is provided with a plurality of through holes corresponding to the fixing holes on the first bearing ring, and the fixing holes of the first bearing ring and the through holes on the barrel flange are respectively fixed through screws.

In one embodiment, the fixing holes of the first bearing ring are distributed in a circular array around the first power output shaft.

In one embodiment, a plurality of fixing posts are convexly arranged on the outer side of the bottom wall of the barrel, screw holes are formed in the fixing posts, a plurality of through holes corresponding to the fixing posts are formed in the barrel flange, and the screw holes in the fixing posts and the through holes in the barrel flange are fixed through screws respectively.

In one embodiment, the middle of the barrel flange protrudes upwards, the barrel flange through hole and the through holes are arranged in the protruding area of the barrel flange, and the through holes are arranged in the non-protruding area of the barrel flange.

In one embodiment, the washing machine also comprises a large barrel impeller flange plate which is fixedly connected with the side surface of the wall of the large barrel impeller close to the bottom of the large barrel, a fastening hole is arranged in the middle of the big barrel impeller flange, a limit ring is fixed outside the second power output shaft, the end part of the second power output shaft extends out of the limit ring, the part of the second power output shaft extending out of the limit ring comprises a fastening part and a screwed part which are connected, the fastening part is arranged close to the limiting ring, the barrel impeller flange is fixed outside the fastening part through the fastening hole, the big barrel impeller flange plate is abutted against the limiting ring, a fixed spiral ring is externally screwed on the screwed part, the fixed helicoid is abutted with the barrel impeller flange plate, and the second power output shaft is used for driving the barrel impeller to rotate through the barrel impeller flange plate.

In one embodiment, the barrel impeller flange plate has a star-shaped structure, a plurality of end angle positions of the barrel impeller flange plate are provided with through holes, one side of the barrel impeller, which is adjacent to the bottom wall of the barrel, is provided with a plurality of barrel screw holes corresponding to the through holes, and each through hole and each barrel screw hole are respectively fixed through a screw in a one-to-one correspondence manner.

In one embodiment, the washing machine further comprises an outer barrel, the big barrel is located in the outer barrel, an outer barrel mounting hole is formed in the bottom wall of the outer barrel, the three-power clutch is fixed on the outer side of the bottom wall of the outer barrel, and three coaxial power output shafts of the three-power clutch penetrate through the outer barrel mounting hole.

A washing machine comprising a washing machine tub assembly as described in any one of the above embodiments.

The washing machine washing barrel assembly is applied to a barrel-in-barrel washing machine, the three-power clutch is used for replacing a traditional DD variable frequency motor, the three-power clutch can provide power drive through a common motor, the total cost of the three-power clutch and the common motor is lower than that of an expensive DD variable frequency motor, the cost is lower, the whole machine cost of the washing machine can be reduced, and therefore the washing machine with the barrel-in-barrel function can be more easily served to the public due to the lower cost. In addition, above-mentioned washing machine washing barrel subassembly carries out the power of vat and vat impeller and carries out through adopting three power clutch, and the installation is comparatively simple. The three-power clutch can be driven by a common motor, and compared with the traditional DD motor, the three-power clutch can be driven by a common motor, and can select a common motor and a three-power clutch with convenient price, thereby reducing the production cost and further enabling the washing machine with the bucket-in-bucket function to more easily serve the public due to the lower price.

Drawings

FIG. 1 is a schematic view of a washing machine according to an embodiment; FIG. 2 is a schematic structural diagram of a clothes washing machine according to an embodiment; FIG. 3 is an exploded view of a portion of the assembly of FIG. 2; FIG. 4 is a partial block diagram of a three power clutch; FIG. 5 is a sectional view of a washing machine according to an embodiment; FIG. 6 is a partial structural view of a washing machine according to an embodiment; FIG. 7 is a partial structural view of a washing machine according to an embodiment; FIG. 8 is a partial exploded view of a washing machine according to an embodiment; FIG. 9 is another perspective view of FIG. 8; FIG. 10 is a partial block diagram of a washing machine according to an embodiment; FIG. 11 is a partial structural view of a washing machine according to an embodiment; FIG. 12 is a sectional view taken along line A-A of FIG. 10; figure 13 is a partial cross sectional view of an embodiment of a keg; figure 14 is a partial cross sectional view of an embodiment of a keg having a water stop ring installed; FIG. 15 is a partial structural view of a washing machine according to an embodiment; FIG. 16 is a partial structural view of a washing machine according to an embodiment; FIG. 17 is a partial structural view of a washing machine according to an embodiment; FIG. 18 is a partially exploded sectional view of a washing machine according to an embodiment; FIG. 19 is a partial sectional view of a washing machine according to an embodiment; FIG. 20 is a schematic structural view of a keg impeller of a washing machine according to an embodiment; fig. 21 is a schematic structural view of a keg impeller of a washing machine of an embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the above objects, features and advantages of the present invention will be more clearly understood and appreciated by reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and in order to provide a better understanding of the present invention. The present invention may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology or nomenclature used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

For example, a washing machine tub assembly, comprising: a big barrel, a big barrel wave wheel and a three-power clutch; a vat through hole is formed in the bottom wall of the vat; the big barrel impeller is positioned in the big barrel; the three-power clutch is provided with three coaxial power output shafts which are respectively a first power output shaft, a second power output shaft and a third power output shaft from outside to inside, the first power output shaft is connected with the big barrel, and the first power output shaft is used for driving the big barrel to rotate; the second power output shaft penetrates through the barrel penetrating hole and is connected with the barrel impeller, and the second power output shaft is used for driving the barrel impeller to rotate. In one embodiment, the washing machine washing tub assembly includes the related structures of the following embodiments, including but not limited to a tub, a tub pulsator, a triple clutch, etc.

To further illustrate the washing tub assembly of the washing machine, referring to fig. 1 to 3, a washing machine includes an outer tub, a tub 110, a tub pulsator 120, a tub 130, a tub pulsator 140 and a driving device, wherein the tub 110 is accommodated in the outer tub, the tub pulsator 120 is accommodated in the tub 110, the tub 130 is disposed on the tub pulsator 120, the tub 130 is accommodated in the tub 110, and the tub pulsator 140 is accommodated in the tub 130. The driving device is used for respectively driving the big barrel 110, the big barrel impeller 120, the small barrel 130 and the small barrel impeller 140 to rotate, the driving device is provided with a transmission shaft, different transmission shafts respectively correspond to the big barrel, the big barrel impeller and the small barrel impeller, and the purpose of independently driving the big barrel, the big barrel impeller and the small barrel impeller to rotate is achieved.

It should be noted that the outer tub in this embodiment plays a role in supporting and mounting as a whole. For example, the washing machine further includes a cabinet, and the outer tub is located in the cabinet. Please refer to the prior art for the specific arrangement of the outer barrel and the box body. The large barrel in the embodiment is equivalent to a washing barrel of a traditional pulsator washing machine and is used for washing clothes. When the washing machine only comprises an outer barrel, a large barrel and a large barrel impeller, the washing machine is similar to a traditional common impeller washing machine, clothes in the large barrel disturb water flow mainly through the large barrel impeller, and the clothes are washed by combining ribs convexly arranged on the inner side wall of the large barrel. The small barrel in the embodiment is additionally arranged on the basis of a traditional common impeller washing machine, is arranged on a large barrel impeller and can be used for washing special clothes, such as clothes needing to be washed separately, as underwear, socks, infant clothes and the like. Therefore, the cross contamination of the clothes during washing can be avoided. The design of a conventional keg can be seen in the keg as in patent document CN 105483974A. In other embodiments of the present application, a technical design that improves upon conventional kegs is also presented.

In the drum-in-drum washing machine shown in fig. 1 of CN107059318A (i.e., a washing machine with a small inner drum added to the inner drum of the conventional general pulsator washing machine), the applicant adopts a DD (direct drive) inverter motor to drive the large drum and the large drum pulsator to rotate, respectively. However, in the product design, the DD variable frequency motor has a complex structure and high cost, which increases the cost of the whole machine, and makes the price of the drum-in-drum washing machine higher, and the drum-in-drum washing machine is difficult to serve the public due to the price factor. In order to reduce the cost of the conventional tub-in-tub washing machine, in one embodiment, the driving device is a triple power clutch 150, and the triple power clutch 150 is disposed on the outer side of the bottom wall of the outer tub. Of course, the three-power clutch may not be fixed on the outer side of the bottom wall of the outer tub. The cost of the washing machine can be greatly reduced by combining the three-power clutch with the traditional common motor. Specifically, referring to fig. 4, the triple power clutch 150 has three coaxial power output shafts, which are a first power output shaft 151, a second power output shaft 152 and a third power output shaft 153 from the outside. For example, three coaxial power output shafts are sequentially sleeved from outside to inside and can respectively and independently rotate. The first power output shaft 151 is used for driving the vat 110 to rotate, and the second power output shaft 152 is used for driving the vat pulsator 120 to rotate. In order to facilitate the three power shafts of the three-power clutch to pass through the bottom wall of the outer barrel, for example, an outer barrel mounting hole is formed in the bottom wall of the outer barrel, the three-power clutch is fixed on the outer side of the bottom wall of the outer barrel, and three power output shafts of the three-power clutch all pass through the outer barrel mounting hole. The three-power clutch and a common motor for driving the three-power clutch are commercially available. For example, referring to fig. 2, the three-power clutch 150 has a transmission gear 154, and a common motor drives the transmission gear of the three-power clutch through a belt to provide the capability for the three-power clutch. Of course, the general motor is a motor distinguished from the DD motor or referred to as a rotary motor having a rotary shaft.

Referring to fig. 3 and 5, the first power output shaft 151 is connected to the barrel 110, and the first power output shaft is used for driving the barrel to rotate. Specifically, for example, the first power take-off shaft 151 is fixedly coupled to the tub 110. For another example, the first power output shaft is connected to the bottom wall of the vat. For another example, the first power output shaft is fixedly connected with the outer side of the bottom wall of the big barrel. In order to better realize the connection between the first power output shaft and the tub, in an embodiment, please refer to fig. 5 and 6, the washing machine further includes a tub flange plate 180, the tub flange plate 180 is fixedly connected to the outer side of the bottom wall of the tub 110, the first power output shaft 151 is fixedly connected to the tub flange plate 180, the first power output shaft 151 is used for driving the tub 110 to rotate through the tub flange plate 180, and by arranging the tub flange plate, the tub flange plate and the outer side of the bottom wall of the tub have a large contact area, so that the torque can be conveniently transmitted to the tub. In order to better realize the fixed connection between the barrel flange and the outer side of the barrel bottom wall, in one embodiment, a plurality of screw holes are formed in the outer side of the barrel bottom wall, a plurality of through holes 183 corresponding to the screw holes are formed in the barrel flange, the screw holes in the plurality of fixed columns and the plurality of through holes in the barrel flange are respectively fixed through screws, and thus, the fixed connection between the barrel flange and the outer side of the barrel bottom wall can be better realized. If the barrel is provided with a plurality of fixing columns, the fixing columns are convexly arranged on the outer side of the bottom wall of the barrel, the screw holes are formed in the fixing columns, a plurality of through holes corresponding to the fixing columns are formed in the barrel flange plate, and the screw holes in the fixing columns and the through holes in the barrel flange plate are respectively fixed through screws. So, adopt the fixed column to set up the longer screw of length to make the spiro union of fixed column and screw more firm, and then make the connection in the outside of vat ring flange and vat diapire more firm.

In order to better realize the fixed connection between the first power output shaft and the barrel flange, in an embodiment, referring to fig. 4, a first bearing ring 1511 is fixed outside the first power output shaft 151, and referring to fig. 5 and 6, the first bearing ring 1511 is fixedly connected with a side of the barrel flange 180 away from the barrel 110. Specifically, a plurality of fixing holes are formed in the first bearing ring 1511, a plurality of through holes 182 corresponding to the fixing holes in the first bearing ring are formed in the vat flange plate 180, and the plurality of fixing holes in the first bearing ring and the plurality of through holes in the vat flange plate are respectively fixed through screws, for example, the plurality of fixing holes in the first bearing ring 1511 are distributed in a circular array by taking the first power output shaft as the center, so that the first power output shaft and the vat flange plate can be fixedly connected well. In an embodiment, referring to fig. 6, the tub flange 180 has a tub flange through hole 181, referring to fig. 3 again, the bottom wall of the tub 110 has a tub through hole 111, and the tub flange through hole 181 is disposed opposite to the tub through hole 111, so that the second power output shaft 152 and the third power output shaft 153 can pass through the tub pulsator flange 180 and the bottom wall of the tub 110. For another example, a barrel flange penetrating hole is formed in the middle of the barrel flange 180.

Referring to fig. 6 in combination with fig. 5, the middle of the barrel flange 180 protrudes upward, or slightly protrudes upward, that is, protrudes upward in the height direction of the barrel 110, the barrel flange through hole 181 and the through holes 182 are both disposed in the protruding region of the barrel flange 180, and the through holes 183 are both disposed in the non-protruding region of the barrel flange 180. So, through upwards protruding with the middle part of vat ring flange, can make vat ring flange 180 more be close to in vat mounting hole 111 with the mounted position of first power output shaft 151, and then make the length that second power output shaft 152 and third power output shaft 153 stretched into the inside of vat 180 longer, the installation of the follow-up vat impeller of being convenient for and keg impeller. In another example, the through hole of the big barrel flange is a round hole structure.

Referring to fig. 1 again, the tub pulsator 120 is disposed in the tub 110. Specifically, the tub pulsator 120 is disposed adjacent to a bottom wall of the tub. Referring to fig. 5 in combination with fig. 3 and 4, the second power output shaft 152 passes through the vat penetration hole 111 and is connected to the vat pulsator 120, and the second power output shaft 152 is used for driving the vat pulsator 120 to rotate. The vat pulsator is mainly used for disturbing water flow to wash clothes in the vat. For example, the second power output shaft is fixedly connected with the big barrel impeller.

In order to better achieve the connection between the second power output shaft 152 and the tub pulsator 120, in an embodiment, referring to fig. 7 and fig. 5, the washing machine further includes a tub pulsator flange 190, the tub pulsator flange 190 is fixedly connected to the side surface of the bottom wall of the tub pulsator 120 close to the tub 110, and the second power output shaft 150 is connected to the tub pulsator flange 190 to drive the tub pulsator to rotate through the tub pulsator flange 190. In order to better realize the connection between the large barrel impeller flange and the large barrel impeller, in an embodiment, the large barrel impeller flange 190 is provided with a plurality of through holes 192, one side of the large barrel impeller 120 adjacent to the bottom wall of the large barrel 110 is provided with a plurality of large barrel screw holes corresponding to the through holes 192, and each through hole 192 and each large barrel screw hole are respectively fixed through a screw in a one-to-one correspondence manner. So, can realize being connected of vat impeller dish and vat impeller betterly. For example, vat pulsator flange 190 is star structure, and a plurality of end angle position department of vat pulsator flange 190 all is provided with through-going hole 192, and like this, vat pulsator flange 190 of star structure can make vat pulsator flange more firm with being connected of vat pulsator. In order to better realize the fixed connection between the second power output shaft 152 and the barrel pulsator flange for facilitating the transmission of torque, in an embodiment, please refer to fig. 7, fig. 4 and fig. 5, a fastening hole 191 is formed in the barrel pulsator flange 190, the second power output shaft 152 is supported in the fastening hole 191, and the second power output shaft is used for driving the barrel pulsator to rotate through the barrel pulsator flange. For another example, the fastening hole 191 has a non-circular hole structure, and for another example, the fastening hole 191 has a polygonal hole structure, and for another example, the fastening hole 191 has an octagonal hole structure, and for another example, the fastening hole is formed in the middle of the large barrel pulsator flange. Thus, the transmission of the torque is convenient. Referring to fig. 4, a limit ring 1521 is fixed outside the second power output shaft 152, an end of the second power output shaft 152 extends out of the limit ring 1521, a portion of the second power output shaft 152 extending out of the limit ring 1521 includes a fastening portion 1522 and a screwing portion 1523, the fastening portion 1522 is disposed adjacent to the limit ring 1521, the tub pulsator flange 190 is fixed outside the fastening portion 1522 through a fastening hole 191, the tub pulsator flange 190 abuts against the limit ring 1521, a fixing helicoid (not shown) is screwed outside the screwing portion 1523, the fixing helicoid abuts against the tub flange 190, and the second power output shaft 152 is used for driving the tub pulsator 120 to rotate through the tub pulsator flange 190. Therefore, the limiting ring 1521 and the fixing helicoid can better fix the barrel impeller flange plate 190 outside the second power output shaft 152. As another example, the shape of the fastening portion 1522 matches the shape of the fastening hole 191. Please combine fig. 7 and fig. 5, so the middle of the barrel flange 190 is recessed downward, and the bearing hole 191 of the flange is located in the recessed area of the barrel flange 190, so that the slightly recessed barrel flange 190 can move the connection position of the barrel flange and the second power output shaft to the bottom wall of the barrel 110, which is convenient to save the space in the barrel, and thus, the screw joint 1523 has a longer length to set more threads, so that the connection between the screw joint 1523 and the fixed screw ring is more secure. If, the height of fixed helicoidal is unanimous with the length of spiro union portion again, so, the fastening nature after second power output shaft and the installation of vat impeller ring flange is better.

In order to facilitate the third power output shaft 153 to pass through the big barrel pulsator 120, please refer to fig. 3, the big barrel pulsator 120 is provided with a big barrel pulsator through hole 1212, so that the third power output shaft passes through or is connected with the small barrel pulsator above the third power output shaft through other components. Referring to fig. 8 again, the large tub impeller 120 is provided with a plurality of ribs 122, and the plurality of ribs 122 of the large tub impeller 120 are distributed in a circular array around the rotation center of the large tub impeller 120, so that the ribs on the large tub impeller play a role of water flow disturbance to facilitate the washing of the laundry in the large tub. For another example, the big barrel wave wheel is provided with convex ribs along the radial direction. If the drum impeller 120 is rotated in the forward direction, the convex rib 122 of the drum impeller 120 has a first water-stirring surface 1221 and a second water-stirring surface 1222 opposite to each other, the first water-stirring surface has two opposite ends along the radial direction of the drum impeller, the first water-stirring surface gradually protrudes from the two ends to the middle part of the first water-stirring surface in the direction away from the second water-stirring surface, the second water-stirring surface has two opposite ends along the radial direction of the drum impeller, the second water-stirring surface gradually protrudes from the two ends to the middle part of the second water-stirring surface in the direction away from the first water-stirring surface, and thus the first water-stirring surface and the second water-stirring surface protruding outward slightly can improve the water flow disturbance effect of the drum impeller, so that the drum impeller rotates in the forward direction and rotates in the reverse direction to have good water flow disturbance effect. For another example, the first water-stirring surface and the second water-stirring surface of the convex rib of the big barrel wave wheel 120 are arranged in bilateral symmetry.

Referring to fig. 2 and 5, the keg 130 is disposed on the vat pulsator 120, and the keg 130 is disposed in the vat 110. The big barrel impeller 120 is used for driving the small barrel 130 to rotate under the driving of the second power output shaft 152. For example, the keg 130 is detachably disposed on the tub pulsator 120. Thus, the keg is convenient to disassemble. For example, the ways of removably attaching the keg to the vat pulsator may include, but are not limited to, snapping, screwing, binding, tying, nesting, and the like. In order to facilitate the installation and disassembly of the small barrel and the big barrel impeller, in an embodiment, referring to fig. 8 and fig. 9 in combination with fig. 5, a positioning column 121 is convexly disposed on the big barrel impeller 120, a positioning groove 131 is concavely disposed on an outer side of a bottom wall of the small barrel 130, the positioning column 121 is embedded or inserted in the positioning groove 131, and the positioning column 121 of the big barrel impeller 120 is used for driving the small barrel 130 to rotate when the big barrel impeller 120 rotates. It should be noted that the positioning groove in this embodiment may also be understood as a concave structure, that is, a concave structure is formed on the outer side of the bottom wall of the keg. It should be noted that, the positioning groove or the positioning column of the present application, such as the word "positioning", is for convenience of description and is not used to limit the specific structure thereof. Subsequent related terms are analogized and should be understood as such. In this embodiment, through the setting of reference column 121 and positioning groove 131, be convenient for when needing to use the keg, install keg 130 on vat impeller 120 through the cooperation of reference column and positioning groove. In order to better realize the installation of the positioning column and the positioning groove and facilitate the torque transmission of the rotation of the keg driven by the keg impeller, for example, the shape of the positioning groove is matched with the shape of the positioning column. For another example, the shape or the cross-sectional shape of the positioning column is set to be triangular, quadrilateral and other polygonal or non-circular shapes, so that the keg is driven to rotate by the matching of the positioning column and the positioning groove through the vat wave wheel. Of course, in other embodiments, the cross-section of the positioning column may be circular. It can be understood that the locating column with the circular cross section is arranged, and is aligned more easily relative to the locating column with the non-circular cross section, so that the locating column and the locating groove can be installed more conveniently, and further the small barrels can be installed and disassembled conveniently.

It should be noted that, the conventional tub-in-tub washing machine, that is, the washing machine additionally provided with a small inner tub in the inner tub of the conventional pulsator washing machine, is poor in structural firmness when the small tub is mounted on the large tub pulsator in a manner of positioning columns and grooves, and when the small tub is used for washing, the situation that the small tub may fall off if the washing machine vibrates too much. In order to ensure that the keg has good structural firmness after being mounted on the barrel wave wheel and is not easy to fall off, in an embodiment, please refer to fig. 8 and fig. 9 in combination with fig. 12, a plurality of slots 1211 are formed on the outer side wall of the positioning column 121, even if a subsequent slot into which the limiting insert column is inserted is facilitated, a plurality of limiting insert columns 1311 are arranged on the inner side wall of the positioning slot 131 of the keg 130, and the limiting insert columns 1311 are at least partially embedded or inserted into the slots 1211. So, because the reference column inlays in the constant head tank, and through the cooperation of spacing post and slot of inserting for the keg is installed to vat wave wheel and is gone up the back structural firmness better, and the keg is difficult for droing. For another example, referring to fig. 8 and 9, the positioning column 121 is disposed in the middle of the big tub impeller 120. Of course, in other embodiments, a plurality of positioning columns or positioning grooves may be provided and respectively provided at a plurality of positions on the large-barrel pulsator. In this embodiment, as shown in fig. 8, the number of the positioning posts and the positioning grooves is one. Through setting up reference column 121 in the middle part of vat impeller 120, can make the installation convenience of keg better. As another example, as shown in fig. 8 and 9, the positioning column 121 has a circular cross section along the height direction of the keg, or the outer side wall thereof has a circular cross section. The positioning groove 131 has a circular cross section in the keg height direction. So, through designing into circular cross-section with the reference column to combine spacing cooperation of inserting post and slot, make the keg install to vat impeller last back structural firmness better, thereby make the keg be difficult for droing. For example, the limit inserting column is matched with the inserting groove and limits the position so that the big barrel impeller drives the small barrel to rotate when rotating. So, be convenient for the vat impeller through spacing the cooperation of inserting post and slot in order to drive the keg and rotate. For another example, the shape of the slot matches the shape of its corresponding limit post. For another example, the position-limiting studs 1311 are embedded in the slots 1211 in a one-to-one correspondence. So, through the cooperation of spacing post 1311 of inserting with slot 1211, can further improve the structural fastness behind keg installation to the vat impeller for be difficult for droing in the keg use. In one embodiment, the position-limiting insertion column 1311 has a rectangular structure, and the insertion groove 1211 has a rectangular cross section, for example, the position-limiting insertion column 1311 has a strip-shaped convex structure, the insertion groove 1211 has a boundary surface matched with the position-limiting insertion column 1311, and the position-limiting insertion column 1311 and the insertion groove 1211 form a clearance fit. So, spacing 1311 of inserting has better limiting displacement after inserting in the slot for the keg installation is better to big barrel wave wheel back structural soundness. For example, the height of the locating post is 40 mm to 110 mm and the depth of the locating groove in the height direction of the keg is 60 mm to 110 mm. So, can make the reference column better with the bonding strength of constant head tank, reduce or avoid the keg to drop. Of course, the depth of the positioning groove or the height of the positioning post is not limited thereto. As another example, the locating post has a height of 45 mm to 60 mm and the locating groove has a depth of 75 mm to 90 mm in the height direction of the keg. Therefore, the binding force of the positioning column and the positioning groove can be ensured under the condition of reducing the heights of the positioning column and the positioning groove as much as possible. Of course, in the embodiment, the height of the positioning column and the height of the positioning groove can be flexibly set according to the size of the barrel, the rotating speed and the like. For example, the depth of the insertion slot 1211 in the radial direction of the drum pulsator is 1.5 to 20 mm. For another example, the depth of the slot in the radial direction of the tub pulsator is 1.8 mm to 3 mm. As another example, the depth of the socket in the height direction of the keg is from 15 mm to 80 mm. As another example, the depth of the socket in the height direction of the keg is from 15 mm to 80 mm. As another example, the depth of the socket in the height direction of the keg is from 20 mm to 25 mm. As another example, the length of the restraining stud in the height direction of the keg is 40 mm to 100 mm. As another example, the length of the restraining stud in the height direction of the keg is from 50 mm to 70 mm. Therefore, the combination strength of the slot and the inserting column can be better ensured, and the torque of the big barrel impeller can be conveniently transmitted. One specific example is that the depth of the positioning groove is 77 mm, the length of the limiting insertion column is 77 mm, the height of the positioning column is 73 mm, and the length of the insertion groove is 73 mm. Thus, the installation firmness is better. Of course, the slot and the inserting column can be of other structures which can be nested mutually, so that the positioning column is embedded in the positioning groove and then has a certain limiting effect through the slot and the inserting column. For another example, the slots 1211 are disposed at intervals along the rotation axis of the drum 120. For another example, referring to fig. 8 and 9, the slots 1211 are disposed at two intervals along the rotation axis of the drum 120. So, can make keg 130 more firm with the installation intensity of vat impeller for the vat is difficult for droing at the dehydration process. For example, the depth of the positioning groove 131, i.e., the length of the designated positioning groove in the height direction of the keg 130, is greater than the thickness of the bottom wall of the keg 130.

When the convex rib 122 is disposed on the big barrel wave wheel, in order to fully utilize the limiting function of the convex rib 122 to further improve the structural firmness of the small barrel after being mounted on the big barrel wave wheel, in an embodiment, please refer to fig. 8 to 10, the small barrel 130 is disposed with a plurality of limiting grooves 133 on the outer side of the bottom wall thereof, and the convex rib 122 of the big barrel wave wheel 120 is embedded in the limiting grooves 133. If so, when the small barrel 130 is embedded in the positioning column 121 through the positioning groove 131, the limiting groove 133 on the small barrel is also embedded outside the convex rib, so that the structural firmness of the small barrel after being installed on the big barrel impeller is further improved, and the small barrel is not easy to fall off in the use process. For another example, the ribs 122 of the big-barrel pulsator 120 are distributed in a circular array around the rotation axis of the big-barrel pulsator 120. For another example, the number of the ribs of the big barrel impeller is 5 to 12. Preferably, the number of the ribs 122 of the tub pulsator 120 is 5. So, on the one hand, it is better to the clothing cleaning performance in the vat, and on the other hand it can further improve the structural firmness behind keg installation to the vat wave wheel for keg is difficult for droing in the use. For another example, please refer to fig. 8 and 10, the barrel pulsator 120 is a circular flat structure. So, the vat impeller of flat structure is more suitable for the installation keg for keg can comparatively firmly install on the vat impeller. For another example, referring to fig. 8, the large-barrel pulsator 120 is further provided with a plurality of water discharge holes 123 in the middle of the two adjacent ribs 122. For another example, referring to fig. 9, a plurality of annular reinforcing ribs 124 and radial reinforcing ribs 125 are further convexly disposed on a side of the big barrel impeller away from the small barrel, and each radial reinforcing rib intersects with the plurality of annular reinforcing ribs, so that the overall structural strength of the big barrel impeller 120 can be improved. In one embodiment, referring to fig. 8 and 12, the periphery of the tub pulsator is upwardly convex or slightly upwardly convex, so that the slightly upwardly convex periphery can reduce the foreign matter from falling below the tub pulsator, i.e. into the bottom walls of the tub pulsator 120 and the tub 110. In order to further improve the structural firmness of the keg after the keg is mounted on the keg impeller and avoid the problem that the keg falls off during the dehydration rotation process driven by the keg impeller, in an embodiment, referring to fig. 11, which is a schematic view, the limiting insert pillar 1311 is provided with a protruding portion 13111, the positioning pillar is provided with a recessed groove 12111 on the sidewall of the insert groove 1211, when the limiting insert pillar 1311 is inserted or inserted into the insert groove 1211, the recessed groove 12111 corresponds to the protruding portion 13111, and the protruding portion 11 can be at least partially accommodated in the recessed groove 12111, according to the actual use process, the position of the recessed groove and the position of the protruding portion can be set on the side toward which the centrifugal tangential force is directed during the dehydration rotation process of the keg, or on the side toward which the circumferential force is directed during the dehydration rotation process. Or the position of the concave groove is arranged on the side, facing the centrifugal tangential force, of the limiting inserted column in the dehydration rotation process of the small bucket, and the position of the convex part is arranged on the side wall, facing the centrifugal tangential force, of the inserting slot in the dehydration rotation process of the small bucket. So, establish the groove and protruding portion of establishing through setting up the recess, at the rotatory in-process of dehydration, under the effect of dehydration centrifugal tangential force, protruding portion of establishing can at least partial holding in the recess establish the inslot, make the recess establish the groove and have certain limiting displacement to protruding portion of establishing, thereby make the slot to inserting the post have certain limiting displacement, and then make the reference column of vat impeller have better limiting displacement to the constant head tank of keg, can further improve the structural firmness behind the keg installation to the vat impeller, avoid the vat impeller to drive the rotatory in-process of keg dehydration, the problem that drops appears in the keg. In a particular embodiment the side walls of the keg have an angle of inclination, typically 1.5-30 degrees, such that the water of the keg is easily flung out through the inclined side walls under the centrifugal force of the dewatering rotation, but there is a risk that the keg is unstable and even flung out when the centrifugal force of the dewatering rotation is too great. In this embodiment, establish groove 12111 and protruding portion 13111 of establishing through setting up the concave, can improve the structural firmness behind keg installs to the vat impeller betterly, drive the rotatory in-process of keg dehydration at the vat impeller, improve the stability of keg. For another example, the protruding portion 13111 has a rectangular parallelepiped structure, and the recessed groove 12111 also has a rectangular cross section. Alternatively, the concave grooves 12111 match the shape of the convex portions 13111. Of course, the protruding portion and the protruding portion may have other shapes as long as the slot has a certain limiting effect on the limiting insertion column. In order to reduce the noise generated when the vat wave wheel drives the vat to rotate, in one embodiment, the rubber strip is still arranged between the slot and the limiting insertion column, so, through installing the rubber strip additional, the noise generated when the vat wave wheel drives the vat to rotate can be reduced. When the rubber strip is arranged, the rubber strip is properly kept away at the position of the concave groove or the convex part. It should be noted that, when the positioning column is disposed in the middle of the big-barrel impeller, the big-barrel impeller through hole disposed on the big-barrel impeller penetrates through the top of the positioning column. In this way, the third power output shaft or the transmission part thereof can pass through the power output shaft. When the large-barrel impeller penetrating hole penetrates through the positioning column and is far away from the side face of the large-barrel impeller, and the outer side wall of the positioning column is provided with a circular cross section, the positioning column at the moment can be regarded as a hollow cylinder. In order to facilitate the third power output shaft 153 to penetrate through the bottom wall of the keg 130, in an embodiment, referring to fig. 3 and fig. 12, a keg mounting hole 1312 is formed in the bottom wall of the keg 130, so that the keg mounting hole 1312 facilitates the third power shaft 153 or a transmission part thereof to penetrate through and extend into the keg 130 so as to be connected with the keg impeller 140 located inside the keg. For another example, a keg mounting hole 1312 is formed in the bottom wall of the positioning groove 131 of the bottom wall of the keg 130, and the keg mounting hole 1312 and the large barrel impeller through hole 1212 are at least partially overlapped, so that the third power shaft 153 or the transmission part thereof can sequentially pass through the large barrel impeller through hole 1212 and the keg mounting hole 1312.

It can be appreciated that the bottom wall of the keg 130 is typically thin and has recessed features or locating grooves 131 that are limited in technical design and that affect how securely the keg 130 fits on the vat pulsator 120. In order to improve the firmness of the keg 130 mounted on the barrel pulsator 120, in one embodiment, referring to fig. 12 in combination with fig. 5 and fig. 2, the positioning groove 131 is formed with a mounting column 132 on the inner side of the bottom wall 130a of the keg 130, that is, the positioning groove 131 is formed with a mounting column on one side of the inner bottom wall of the keg, it can also be understood that the mounting column is protruded on the inner side of the bottom wall 130a of the keg 130, and the positioning column 132 is formed with a positioning groove 131 on the outer side of the bottom wall 130a of the keg. A keg mounting hole 1312 is formed in the side of the mounting post 132 remote from the inside bottom wall of the keg 130. Thus, the protruding mounting post 132 is convenient for open the positioning groove 131 with a longer depth, and further can improve the firmness of the keg 130 mounted on the big barrel wave wheel 120. In this embodiment, it is also understood that the mounting post 132 is disposed on the bottom wall of the keg 120, i.e., the mounting post is considered to be separate from the bottom wall member of the keg. Of course, it should be noted that the bottom wall of the keg is provided with the mounting post in a protruding manner, or the mounting post is provided on the bottom wall of the keg, although the description is different, it should be considered that the disclosure should be considered as covering the scope of the present application. The inner side of the bottom wall of the keg is the side of the bottom wall of the keg inside the keg, the outer side of the bottom wall of the keg is the side of the bottom wall of the keg and the outer side of the keg, and the like.

Referring to fig. 5 again in conjunction with fig. 1 and 3, the keg impeller 140 is located in the keg 130, the third power output shaft 153 sequentially passes through the vat penetration hole 111, the vat impeller penetration hole 1212 and the keg installation hole 1312 and is connected to the keg impeller 140, and the third power output shaft 153 is used for driving the keg impeller 140 to rotate. The keg impeller 140 is used to provide a turbulent water flow effect to facilitate the cleaning of the laundry in the keg. It should be noted that the conventional drum-in-drum washing machine (i.e. the washing machine with a small inner drum added in the inner drum of the conventional pulsator washing machine) still has the following defects: the washing of clothing in the keg mainly relies on the bellied muscle of keg inner wall to realize that the rivers disturbance washs, so, relative motion between clothing and the rivers just is relatively more weak, just also is relatively poor to the cleaning performance of clothing in the keg. In addition, in the conventional drum-in-drum washing machine, the power of the large drum impeller is mainly provided by the washing shaft of the DD motor. The DD motor power output shaft is divided into a washing shaft and a dewatering shaft, the dewatering shaft drives the big barrel to rotate, the washing shaft drives the impeller to rotate, the washing shaft is low in strength, and the force arm is long. When the small barrel is used for washing, the washing shaft is subjected to large torque and bending stress, and the bearing for fixing the washing shaft is abraded seriously indirectly. Because the washing shaft is limited in strength and the maximum torque which can be borne by the washing shaft is limited, the appearance is that the weight of clothes and water is limited during the washing of the small barrels, and therefore the rated washing capacity of the small barrels cannot be too large. In this embodiment, through adopting three power clutch 150, it has three power shaft, compare in the DD motor, it goes out a third power output shaft 153 more, third power output shaft drives the keg impeller and rotates, so, in using keg washing process, the washing power of keg is provided by second power output shaft and third power output shaft simultaneously, can solve traditional above-mentioned problem, for current barrel-in-barrel washing machine, the washing machine of this application, because the washing power of keg is provided by second power output shaft and third power output shaft simultaneously, the torque that the second power output shaft that drives the big barrel impeller receives and the corresponding reduction of bending stress, thereby can make the rated washing capacity of keg obtain improving, the more clothing of large capacity of keg can wash. In addition, set up little barrel wave wheel in little barrel, for traditional bucket-in-bucket washing machine, its little barrel only relies on the protruding muscle of establishing of the inside wall of the interior bucket of washing to realize that the rivers disturbance carries out abluent mode, and above-mentioned interior bucket of washing sets up little barrel wave wheel in little barrel, can realize stronger rivers disturbance effect to can improve the cleaning performance to the clothing.

It can be understood that the washing of the laundry in the keg 130 is performed by rotating the keg at a high speed to throw the water out of the inclined bottom wall of the keg. To further describe the keg, referring to figure 12, the keg 130 comprises a bottom wall 130a and side walls 130b, the bottom wall of the keg is connected to the side walls of the keg, and the bottom wall 130a of the keg 130 and the side walls 130b of the keg 130 together enclose a hollow cavity of the keg. As before in the keg, i.e. in the hollow cavity of the keg. A mounting post 132 is also located within the hollow cavity of keg 130. For example, the side wall of the keg has an inclined angle and the inside diameter of the keg becomes progressively larger from the bottom wall of the keg in the direction of the opening of the keg. For example, the inclination angle is 1.5 degrees to 30 degrees. Thus, the side wall of the inclined keg can better throw water out along the side wall of the keg during the dewatering process of clothes in the keg. For example, the bottom wall 130a of the keg 130 is provided with a recessed structure, i.e., the positioning groove 131 as before, on the outer side of the keg 130, and the recessed structure is used for detachably mounting the keg onto the barrel pulsator. For example, the bottom wall 130a of the keg 130 is generally circular in configuration or the bottom wall 130a of the keg has a circular cross-section in the height direction of the keg. The recessed structure 131 is located in the middle of the bottom wall 130a and the location of the recessed structure 131 corresponds to the location of the mounting posts 132, it being understood that the recessed structure forms the mounting posts on the inside of the bottom wall of the keg. For example, the mounting column has a circular cross section along the height direction of the keg, for example, the diameter of the mounting column is 1/5-2/5 of the smallest diameter of the keg. Thus, the cleaning effect of the keg is better. It can be appreciated that after the bottom wall of the keg is provided with the mounting post, the mounting post protrudes out of the bottom wall of the keg, which can affect the mounting of the keg impeller to some extent, especially when the keg impeller 140 is relatively flat, wasting a lot of space in the keg. In an embodiment, referring to fig. 12 in combination with fig. 13, a first step portion 130c and a second step portion 130d are disposed between the side wall 130b and the bottom wall 130a of the keg 130, the first step portion 130c includes a top wall 130c1 and a side wall 130c2 connected to each other, the second step portion 130d includes a top wall 130d1 and a side wall 130d2 connected to each other, the top wall 130c1 of the first step portion is connected to the inner side of the side wall 130b of the keg 130, the top wall 130d1 of the second step portion is connected to the side wall 130c2 of the first step portion, and the periphery of the bottom wall 130a of the keg 130 is connected to the bottom wall 130d2 of the second step portion. So, set up second step portion except can holding the spacing groove 133 on the diapire, more importantly can guarantee the height of erection column for the erection column possesses sufficient height, thereby the diapire can set up the constant head tank and the spacing post of inserting of sufficient height, and then can further improve the structural strength that the keg installed on the vat impeller, can remain stable when making the vat impeller rotate through setting up spacing post of inserting and slot drive keg. In addition, through setting up first step portion and second step portion, can reduce the influence to keg impeller installation, can reduce the volume in the clearance space between the diapire of keg impeller and keg, and then the waste of water when reducing keg and washing. For another example, the top wall 130d1 of the second step connects to the middle of the side wall 130c2 of the first step, so that the structural connection strength can be increased. For another example, the top end of the side wall 130c2 of the first stepped portion protrudes from the top wall 130c1 of the first stepped portion, and the top end of the side wall 130c2 of the first stepped portion, the top wall 130c1 of the first stepped portion and the side wall 130b of the keg together enclose a first annular barrier groove 130 e. For another example, the top end of the side wall 130d2 of the second step portion slightly protrudes out of the top wall 130d1 of the second step portion, the top end of the side wall 130d2 of the second step portion, the top wall 130d1 of the second step portion and the side wall 130c2 of the first step portion jointly enclose a second annular object blocking groove 130f, and for another example, the lower periphery of the keg impeller 140 extends downward to form an annular reinforcing rib 1431, and the annular reinforcing rib 1431 on the lower periphery of the keg impeller 140 is at least partially accommodated in the second annular object blocking groove 130 f. For example, the height of the first step portion is 9 to 13 mm, and the height of the second step portion is 14 to 21 mm. The heights of the first stepped portion and the second stepped portion are both the heights of the side plates. In order to facilitate removal and movement of the keg, in one embodiment the keg is provided with a handle. Therefore, the small barrels are convenient to detach and move from the big barrel impeller through the handles. In another example, the handle is disposed on a top end of a side wall of the keg.

In order to further improve the cleaning effect on the clothes in the keg, for example, please refer to fig. 12, a plurality of cleaning ribs 130b1 are convexly arranged on the inner side of the side wall 130b of the keg 130, and in another example, a plurality of cleaning ribs 130b1 are distributed on the side wall of the keg at intervals, and in another example, the cleaning ribs of a plurality of kegs are distributed at intervals on the circumference of the rotation center of the kegs, so that the water flow disturbance capability in the kegs can be further improved by the cleaning ribs arranged at intervals, and the cleaning effect on the clothes in the kegs can be further improved. For another example, the cleaning rib of the keg is a raised strip structure, and for another example, the length extending direction of the cleaning rib is consistent with the height direction of the keg. So, can play better rivers disturbance effect in the keg rotation, and then can improve the cleaning performance to clothing in the keg. As another example, the interval central angle between two adjacent cleaning ribs 130b1 of the keg 130 is 15 degrees to 20 degrees, and preferably, the interval central angle between two adjacent cleaning ribs of the keg is 20 degrees. The alternate central angles are central angles centered on the center of rotation of the keg. Thus, the cleaning effect is better. As another example, the cleaning ribs of the keg have a length in the circumferential direction of the keg of from 8 millimeters to 12 millimeters. As another example, the corners of the cleaning ribs of the keg have a rounded corner configuration. In another example, the cleaning ribs of the keg each have a rounded corner configuration at the corners. So, it is better to the disturbance effect of rivers, can improve the cleaning performance to the clothing in the keg.

It can be understood that washing of laundry generally involves soaking, washing, and dehydrating processes. The inclined side wall of the keg allows water therein to flow along the inclined side wall into the outer tub during dehydration of the keg. At the same time, however, during normal keg cleaning, the water flow in the rotating keg also partially flows down the keg side walls. In order to better perform the water-retaining function on the water in the rotating keg during the cleaning process of the keg, for example, please refer to fig. 14, which is a partial sectional view of an opening position of the keg provided with a water-retaining ring in an embodiment, an annular limiting rib 130b2 is convexly arranged on the top of a side wall 130b of the keg 130, the washing machine further comprises a water-retaining ring 135, the water-retaining ring 135 comprises a water-retaining portion 1351 and a water-discharging portion 1352 which are connected, and an end of the water-retaining portion far away from the water-discharging portion abuts against the annular limiting rib, so that the annular limiting rib plays a certain supporting role on the water-retaining portion. The diameter of the water retaining part is gradually increased from the end part close to the annular limiting rib to the end part far away from the annular limiting rib, the water discharging part 1351 is positioned above the water retaining part 1352, the diameter of the water discharging part is gradually increased from the end part close to the water retaining part to the end part far away from the water retaining part, the end part far away from the water retaining part of the water discharging part extends out of the outer side of the side wall of the small bucket, a gap is reserved between the end part far away from the water retaining part of the water discharging part and the top end of the side wall of the small bucket, a plurality of water discharging holes 13511 are formed in the end part, close to the annular limiting rib, of the water retaining part, the water discharging holes of the water retaining part are distributed at intervals circumferentially around the rotation center of the small bucket, so that by arranging the water retaining part, the water retaining part has a good water retaining effect on the cleaning water flow of the small bucket in a non-dehydration state, and most of the water in the small bucket can be discharged into a large bucket outside through the water retaining part and the water discharging part, and then discharged through the vat. By providing the drain hole, a small amount of water at the end of the water stop portion away from the drain portion can be drained well. For another example, the distance between two adjacent water discharge holes of the water retaining part is equal, and for another example, the opening direction of the water discharge holes is the height direction of the small bucket. As another example, the drain hole has a circular cross-section, and as another example, the drain hole becomes larger in diameter from an end near the bottom wall of the keg to an end away from the bottom wall of the keg. As another example, the diameter of the drain hole is 4 mm to 6 mm. As another example, the central angle of the adjacent two water discharge holes of the water-retaining portion with the rotational center of the keg is 15 to 20 degrees. Preferably, the adjacent two water discharge holes of the water guard portion are at an angle of 18 degrees with the center of rotation of the keg. So, can effectively improve drainage efficiency, and the drainage effect is better, can make the little partial water discharge of the tip department that water retaining part kept away from water discharging part comparatively thorough. As another example, the drain hole has a circular cross-section. In order to better play a role in water blocking and reduce the water passing through the gap between the water blocking part and the side wall of the keg, for example, an annular groove 13512 is further formed in the end part of the water blocking part 1351 away from the water discharging part, a sealing ring 136 is further arranged between the end part of the water blocking part away from the water discharging part and the limiting rib, and the sealing ring is partially accommodated in the annular groove 13512 and is abutted against the side wall of the keg. For another example, the sealing ring is a rubber ring, so that the gap between the end part of the water retaining part and the side wall of the small barrel can be well sealed. For example, washing machine still includes clamping ring 137, and the top bending type of clamping ring 137 has screens groove 1371, and the clamping ring is detained the top at the lateral wall of keg through screens groove 1371, and the second end of clamping ring and the tip butt of water retaining part keeping away from water discharging part, and the tip that water retaining part kept away from water discharging part is located between clamping ring and the spacing muscle. So, through setting up the clamping ring, can support to hold well the manger plate portion and fix on annular spacing muscle, and then make the installation of whole manger plate ring comparatively firm.

It can be understood that the keg is detachably mounted on the keg impeller, thus posing no small challenge to the mounting of the third power output shaft 153 and the keg impeller 140. On the one hand, both to guarantee that third power output shaft can transmit moment for little keg impeller, on the other hand, will make things convenient for the dismantlement and the installation of third power shaft and little keg impeller. For example, the third power output shaft is detachably connected with the keg impeller, and specifically, the modes include but are not limited to screwing, clamping and the like. In order to conveniently detachably connect the small barrel wave wheel and the third power shaft and facilitate the transmission of torque. In one embodiment, the washing machine further comprises a power output shaft connecting assembly, and the third power output shaft is connected with the keg impeller through the power output shaft connecting assembly. Referring to fig. 15 to 19, the power output shaft connecting assembly includes an upper clamping cylinder 160 and a lower clamping cylinder 170, which are clamped together. Referring to fig. 16, the upper clamping cylinder 160 is provided with an upper clamping tooth 161, the lower clamping cylinder 170 is provided with a lower clamping tooth 171, the upper clamping tooth 161 is clamped with the lower clamping tooth 171, and the upper clamping cylinder 160 and the lower clamping cylinder 170 are clamped by the upper clamping tooth 161 and the lower clamping tooth 171. The upper clamping cylinder 160 can be used for mounting and connecting a component to be transmitted, and the lower clamping cylinder 170 is used for mounting and connecting a power output shaft or a transmission shaft of the driving assembly. In particular to the detachable installation of a small barrel wave wheel and a third power output shaft in a detachable small barrel. In this embodiment, the upper cartridge 160 may be used to connect to the keg impeller 140, and the lower cartridge 170 may be used to connect to the third power output shaft 153. The upper clamping cylinder and the lower clamping cylinder are clamped to facilitate torque transmission of the power output shaft, so that the third power output shaft drives the small barrel impeller to rotate through the lower clamping cylinder and the upper clamping cylinder. When the third power shaft and the small barrel impeller need to be disconnected, the clamping connection of the upper clamping barrel and the lower clamping barrel is directly disconnected. When the small barrel is arranged on the small barrel wave wheel, the upper clamping teeth of the upper clamping barrel are clamped with the lower clamping teeth of the lower clamping barrel. When the small barrels are detached from the small barrel wave wheel, the upper clamping teeth and the lower clamping teeth can be disconnected.

Referring to fig. 15 to 19, an upper clamping tooth 161 is disposed on an outer sidewall of the upper clamping cylinder 160; the lower clamping cylinder 170 is provided with a clamping groove 172, and the inner side wall 172 of the clamping groove of the lower clamping cylinder 170 is provided with a lower clamping tooth 171; the upper clamping cylinder 160 is at least partially accommodated in the clamping groove 172, and the upper clamping teeth 161 and the lower clamping teeth 172 are clamped. So, can make go up a calorie of section of thick bamboo and can dismantle the connection with a lower calorie of section of thick bamboo, during the installation, the joint of calorie of tooth and lower calorie of tooth is convenient for the conveying of power output shaft moment through last calorie of tooth, and is specific, the power transmission of the third power output shaft to the keg impeller of being convenient for in this embodiment. When the upper clamping cylinder is disassembled, the upper clamping cylinder is directly pulled out from the clamping groove of the lower clamping cylinder, so that the assembling process and the disassembling process are very convenient to operate, and the operation is convenient and fast. In one embodiment, the upper latch 161 includes a plurality of upper protrusions 1611 spaced apart from each other on the outer sidewall of the upper latch 160, the lower latch 171 includes a plurality of lower protrusions 1711 spaced apart from each other on the inner sidewall of the latching groove 172 of the lower latch 170, a lower groove 1711a is formed between two adjacent lower protrusions 1711, each upper protrusion 1611 is inserted into one lower groove 1711a, and each upper protrusion 1611 is at least partially inserted into the corresponding lower groove 1711. Therefore, the mounting structure is good in firmness and high in torque transmission efficiency. For another example, the upper protrusions are embedded in the lower grooves in a one-to-one correspondence, and each upper protrusion is at least partially embedded in the corresponding lower groove. Therefore, the upper clamping teeth and the lower clamping teeth can be clamped more firmly, and the torque transmission efficiency is further improved. For another example, upper protrusion 1611 and lower protrusion 1711 each have a strip-shaped configuration, with the end of upper protrusion 1611 adjacent to the lower groove having a pointed configuration, and the end of lower protrusion 111 adjacent to the upper cartridge also having a pointed configuration. Therefore, the corner structure of the end part is more convenient for the upper bulge to be inserted into the lower groove. It should be noted that, in the present embodiment, it is also understood that an upper groove is formed between two adjacent upper protrusions, and each lower protrusion is inserted into one upper groove one by one. It should be understood that the above description, although different, should be construed to encompass the scope of the present application. In addition, the position of going up card section of thick bamboo and lower card section of thick bamboo also can be exchanged, namely, goes up card section of thick bamboo and is used for connecting the power shaft, and lower card section of thick bamboo is used for connecting waiting to transmit the part, like the keg impeller, and it should also be gone into this application's scope of protection with its bag.

In an embodiment, referring to fig. 15 to 19, the upper clamping cylinder 160 includes a top plate 160a and a cylinder 160b, the cylinder 160b is a hollow cylinder, an upper clamping tooth 161 is disposed on an outer sidewall of the cylinder 160b, and the upper clamping tooth 161 includes a plurality of upper protrusions 1611 spaced apart from each other on the outer sidewall of the cylinder 160 b; the top plate 160a is connected to the top end of the cylinder 160 b. The top plate is used for opening a hole to install and connect the keg impeller. In one embodiment, the top plate 160a connects the ends of the upper protrusions 1611 distal from the lower recesses 1711a, so that the top plate can provide a more rigid structure for the upper protrusions 1611 on the cartridge. For another example, the upper clamping cylinder 160 further includes a mounting rod 160c, the mounting rod 160c is cylindrical, the top plate 160a is connected to the top end of the mounting rod 160c, the diameter of the mounting rod 160c is smaller than the inside diameter of the cylinder 160b, the mounting rod 160c is located in the cylinder 160b, and the length of the cylinder 160b is smaller than the length of the mounting rod 160 c; therefore, by arranging the mounting rod, a hole with a longer length can be conveniently formed in the mounting rod, so that the mounting connection between the upper clamping cylinder and the third power shaft is firmer. In one embodiment, the end of each lower protrusion far away from the upper clamping cylinder is connected with the bottom wall of the clamping groove. Thus, the structural strength of the entire lower retaining tooth can be increased.

In a specific embodiment, the upper cartridge 160 is connected to the keg impeller 140 through a spline 221, and in order to better connect the spline and the upper cartridge together, for example, please refer to fig. 18, an upper mounting hole 160a1 is opened on the top plate 160a, an upper mounting hole 160c1 and an upper containing hole 160c2 are opened in the mounting rod 160c, and the upper mounting hole, the upper mounting hole and the upper containing hole are sequentially communicated; the diameters of the upper mounting holes are respectively smaller than the diameters of the upper placing holes and the upper containing holes. The upper seating hole 160a1 is to receive the spline 221, and the upper seating hole 160a1 matches the shape of the spline. For example, the end part of the spline adjacent to the upper clamping barrel has a triangular, quadrangular or polygonal cross section, and the upper placing hole is matched with the shape of the spline, so that the transmission of torque can be more convenient. Referring to fig. 5, the upper mounting hole 160c1 is used for passing through the shaft of the screw 310a, and the upper receiving hole 160c2 is used for receiving the head of the screw 310 a. Therefore, the upper clamping cylinder can be fixed with the spline through the screw. Of course, the end of the spline needs to be provided with a screw hole corresponding to the screw. Note that, the screw 310a in this embodiment is named as a first upper screw 310a for distinguishing the following screws. For example, two screw holes are respectively formed at two ends of the spline 221, namely, an upper spline screw hole 2211 and a lower spline screw hole 2212. For example, the keg impeller 140 is provided with a fixing hole 141, and the keg impeller 140 and the spline 221 are fixed by a second upper screw 310. The shaft of the second upper screw 310 is sequentially screwed with the fixing hole 141 and the spline upper screw hole 2211. So, can be connected spline and vat impeller. For example, the shank of the first upper screw 310a passes through the upper mounting hole 160c1 and threadingly engages the splined lower screw hole 2212. Thus, the spline can be connected with the upper clamping cylinder. The splines in this embodiment may also be understood as splined shafts, or connecting rods.

Referring to fig. 16 and 18, the lower clip cylinder 170 has a mounting groove 1721 formed on a bottom wall of the clip groove 172, and the mounting rod is received in the mounting groove adjacent to an end of the lower clip cylinder, i.e., the mounting groove is used for mounting or placing or receiving an end of the mounting rod. For another example, the bottom wall of the clamping groove 172 of the lower clamping cylinder protrudes a plurality of arc-shaped blocking pieces 172a towards the direction close to the upper clamping cylinder, the arc centers and the arc radii of the arc-shaped blocking pieces 172a are the same, the central axis of the cylinder 160b of the upper clamping cylinder of the plurality of arc-shaped blocking pieces 172a is circumferentially distributed at intervals, and the bottom walls of the arc-shaped blocking pieces 172a and the clamping groove 172 together enclose a placement position for placing or accommodating the end portion of the installation rod. The bottom wall of the clamping groove 172 is also provided with a placing groove 1721 at the placing position, so that a mounting rod with a longer length can be accommodated. In an embodiment, referring to fig. 16, a plurality of reinforcing ribs 170a are convexly disposed on an outer sidewall of the lower clamping cylinder 170, and the plurality of reinforcing ribs 170 of the lower clamping cylinder are circumferentially spaced around a central axis of the upper clamping cylinder. Therefore, the reinforcing ribs can play a good reinforcing role in the structure of the lower clamping cylinder. In an embodiment, please refer to fig. 16, 18 and 19, an extending portion 170b extends from an end of the lower clip cylinder 170 adjacent to the upper clip cylinder 160 along an outer side of the lower clip cylinder 170, and for example, the extending portion 170b is gradually inclined downward from a direction away from a side wall of the lower clip cylinder 170. For another example, the end of the extension 170b away from the sidewall of the lower cartridge 170 is protruded with a stopper 170b 1. Referring to fig. 8 and 5, an annular groove 1213 is formed on a surface of the positioning pillar 121 of the tub pulsator 120 away from the tub pulsator 120, and the annular groove 1213 is formed around the tub pulsator mounting hole 1212. The stopper portion 170b1 partially protrudes into the annular groove 1213, so that the arrangement of the annular groove and the stopper portion 170b1 can also prevent foreign matter from falling into the drum pulsator mounting hole to some extent.

In order to better mount the lower cartridge 170 and the third power transmission shaft 153 together, in an embodiment, referring to fig. 18, the lower cartridge 170 is provided with a lower mounting hole 1722, a lower mounting hole 1723 and a lower receiving hole 1724 on the bottom wall of the mounting groove 1721, which are sequentially communicated, the lower mounting hole 1722 is closest to the upper cartridge 160, and the diameter of the lower mounting hole 1723 is smaller than the diameter of the lower mounting hole 1722 and the diameter of the lower receiving hole 1724. Referring to fig. 5, the lower clamping cylinder 170 is connected to the third power output shaft 153 through a lower screw 320. The lower mounting hole 1722 is used for accommodating the head of the lower screw 320, the lower mounting hole 1723 is used for passing through the rod of the lower screw 320, and the lower accommodating hole 1724 is used for accommodating and mounting the end of the third power output shaft 153. The third power output shaft 153 is provided with a screw hole 153a, and the rod part of the lower screw 320 passes through the lower mounting hole 1723 and is screwed with the screw hole 153a of the third power output shaft 153, so as to fix the lower clamping cylinder and the third power output shaft.

In order to make the connection between the third power output shaft and the lower clamping cylinder more firm and improve the torque transmission efficiency, in one embodiment, referring to fig. 17 to 19, the lower clamping cylinder 170 has a plurality of embedding grooves 1724a formed on a sidewall of the lower receiving hole 1724 thereof, and the plurality of embedding grooves 1724a are circumferentially spaced apart from a central axis of the cylinder 160b of the upper clamping cylinder 160, or it can be understood that the plurality of embedding grooves are circumferentially spaced apart from a rotation axis of the third power shaft, the power output shaft connecting assembly further includes a mounting insert 175, a plurality of embedding posts 1751 are formed on an outer sidewall of the mounting insert 175, the mounting insert 175 is embedded in the lower receiving hole 1724, and the embedding posts 1751 are embedded in the embedding grooves 1724a in a one-to-one correspondence manner, by providing the mounting insert 175, the fastening of the lower clamping cylinder 170 to the third power output shaft 153 can be further improved. In a specific application, the installation insert 175 can be made of metal, the lower clamping cylinder can be made of plastic, and the installation insert is embedded into an injection mold of the lower clamping cylinder to form a connection structure of the installation insert and the lower clamping cylinder. In addition, the fit of the embedding post 1751 and the embedding groove 1724a can further improve the torque transmission efficiency of the lower clamping cylinder and the power shaft. For another example, the outer sidewall of the mounting insert 175 is provided with an insertion portion 1754 in a protruding manner, the lower clip is provided with an insertion groove 1724 in a recessed manner on the sidewall of the lower accommodating hole 1724, and the insertion portion 1754 of the mounting insert 175 is inserted into the insertion groove 1724. Preferably, the insertion part has a polygonal shape, and the insertion groove has a shape corresponding to the insertion part. So, can make down a calorie of section of thick bamboo higher with the joint strength of installation inserts, and the installation inserts can be better the moment transmission of third power output shaft for a calorie of section of thick bamboo down. Referring to fig. 19 in combination with fig. 18, the mounting insert 175 is provided with a power shaft mounting hole 1753 and a screw through hole 1752 sequentially communicating with each other along the central axis direction of the cylinder 160b of the upper clamping cylinder 160, the screw through hole 1752 is closest to the lower mounting hole 1723, and the diameter of the power shaft mounting hole 1753 is greater than the diameter of the screw through hole 1752. The power shaft mounting hole is used to mount and receive the end of the third power shaft 153. Referring to fig. 5, the rod of the lower screw 320 sequentially passes through the lower mounting hole 1723 and the screw through hole 1752 and is screwed with the screw hole 153a of the third power output shaft 153, so as to fix the lower clamping cylinder, the mounting insert and the third power output shaft 153. In an embodiment, referring to fig. 4 and fig. 19, the outer side wall of the end portion of the third power output shaft 153 is provided with a plurality of retaining grooves 1531, referring to fig. 19 again, the mounting insert 175 is provided with a plurality of retaining posts (not shown) protruding from the inner side wall of the power shaft mounting hole 1753 and corresponding to the retaining grooves 1531 one by one, and the retaining posts are inserted into the retaining grooves. So, the cooperation in screens post and screens groove has better limiting displacement, can further improve the fastening intensity of third power output shaft and installation inserts to can improve its moment transmission efficiency.

To better install the keg impeller in the keg, referring again to fig. 5 in conjunction with fig. 3, the keg impeller 140 is rotatably mounted on the mounting post 131 of the keg 130. A keg mounting hole 1312 is formed in the bottom wall of the keg 130, and the keg mounting hole 1312 penetrates the top of the mounting post 131. Referring to fig. 5 and 15, the washing machine further includes splines 221 and a bearing 222, the bearing 222 is supported in the keg mounting hole 1312, and the splines 221 are fixed in an inner ring of the bearing 222 so that the splines are rotatable relative to the keg mounting hole. The spline 221 is connected with the keg impeller 140. For example, the installation of the spline and the keg impeller can refer to the foregoing. In this manner, the keg impeller can be rotatably disposed on the mounting column 131 through the spline and the bearing. And the small barrel impeller can be connected with the upper clamping barrel through a spline, so that the third power output shaft 153 drives the small barrel impeller to rotate through the upper clamping barrel and the lower clamping barrel. It can understand, because the bottom wall of keg is seted up porosely, the keg mounting hole promptly, simultaneously, is restricted to keg detachable characteristics, and the problem that need await the solution is not overflowed in keg bottom wall trompil, in order to make the keg mounting hole overflow not appear, in one embodiment, the bearing is for sealing water bearing or sealed bearing. So, can mention better water seal effect for the excessive water does not appear in keg mounting hole. In an embodiment, referring to fig. 15, 17 to 19, the water sealing bearing 222 has an inner ring 2221 and an outer ring 2222, the inner ring 2221 of the water sealing bearing is fixedly sleeved outside the spline 221, and referring to fig. 20, the outer ring 2222 of the water sealing bearing is fixed on the inner sidewall of the tub mounting hole 1312. Thus, the installation is firmer. In one embodiment, the water seal bearing 222 includes an inner ring 2221, an outer ring 2222, and a sealing ring 2223, the inner ring 2221 of the water seal bearing is fixedly sleeved outside the spline 221, the outer ring 2222 of the water seal bearing is fixed inside the inner sidewall of the keg installation hole 1312, and the inner ring 2221 of the water seal bearing is rotatably supported inside the outer ring, for example, by balls, and for example, the inner ring is movably sleeved inside the outer ring. Referring to fig. 18 and 19, an installation portion 2222a is extended from an outer side wall of the outer ring 2222, the installation portion is used for placing the sealing ring, and an installation groove 2222b is formed in the installation portion, and the installation groove is used for installing or placing the sealing ring. The sealing ring has a circular ring structure, the sealing ring is partially embedded into the placing groove, the sealing ring 2223 abuts against the side wall and the bottom wall of the placing groove 2222b, and the side face, far away from the placing groove 2222b, of the sealing ring 2223 abuts against the bottom wall of the positioning groove 131. Therefore, the sealing ring can play a good water sealing role. In an embodiment, the mounting portion 2222a of the outer ring 2222 further has an extending portion 2222c extending outward, the extending portion 2222c has a circular sheet-shaped structure, the extending portion 2222c is provided with a plurality of extending portion screw holes at intervals, the bottom wall of the positioning groove is provided with a plurality of positioning screw holes, the positions of the positioning screw holes correspond to the positions of the extending portion screw holes, and the positioning screw holes and the extending portion screw holes are fixed by screws respectively. In this manner, the outer collar is better securely mounted within the keg mounting aperture 1312. In one embodiment, a limiting portion 221a is convexly arranged in the middle of the spline 221, a limiting protrusion 2222d is convexly arranged on the inner side wall of the outer ring 2222, the limiting protrusion 2222d divides the cavity of the outer ring into an upper placing cavity 2222e and a lower placing cavity 2222f, the limiting protrusion encloses the middle placing cavity 2222g, the number of the inner rings 2221 is two, the two inner rings are respectively an upper inner ring and a lower inner ring, the upper inner ring and the lower inner ring are sleeved outside the spline 221, the upper inner ring is supported in the upper placing cavity, the lower inner ring is supported in the lower placing cavity, the limiting portion 221a of the spline is accommodated in the upper placing cavity, the limiting portion is integrally in a circular-ring-shaped structure, the diameter of the limiting portion is larger than that of the middle placing cavity 2222g, and the limiting portion 221a of the spline is located between the limiting protrusion 2222d and the upper inner ring. So, can be better with the spline spacing, avoid it to drop from the inner circle. In one embodiment, the water sealing bearing further comprises a containing limiting ring, the containing limiting ring is sleeved outside the spline and located between the upper inner ring and the lower inner ring, the containing limiting ring comprises a containing ring portion and a limiting ring portion which are connected, the outside diameter of the containing ring portion is respectively larger than the diameter of the outside of the limiting ring portion and the diameter of the middle placing cavity, the limiting ring portion is contained in the upper placing cavity, the containing ring portion is contained in the middle placing cavity, and the limiting portion of the spline is located between the limiting ring portion and the limiting protrusion. So, through setting up the holding spacing ring, can further play better limiting displacement to the spline, avoid it to drop from the inner circle. In addition, the spline that this embodiment provided, through setting up two inner circles, its flexibility is better, can improve moment transmission efficiency betterly, can also improve the whole life who seals water bearing.

It is noted that the keg is relatively small both in volume and area and therefore the keg impeller area and diameter introduced is also relatively small. How to introduce the keg impeller in the small keg with small volume to further improve the water flow disturbance capability is a problem to be solved urgently. In order to improve the water flow disturbance capability of the keg impeller, please refer to fig. 20 and 21, the present application further provides a keg impeller 140 impeller including a keg impeller body 140a, wherein the middle of one side of the keg impeller body 140a protrudes to form a protrusion 142, or the middle of one side of the keg impeller body facing the keg opening protrudes to form a protrusion. The convex part 142 forms a cavity 143 on the other side of the keg impeller body 140a, the keg impeller body 140a has a connection column 144 in the middle of one side of the cavity, and the connection column 144 is used for mounting the spline 221. Fixing hole 141 is opened at the middle part of keg impeller body 140a, and fixing hole 141 runs through with cavity 143, and fixing hole 141 runs through spliced pole 144, if again, the fixing hole is the screw. The spliced pole is used for connecting the power transmission mechanism who installs connection drive arrangement, and the fixed orifices of bigger degree of depth can be seted up to the spliced pole, and then can set up the longer screw thread of length. For the less keg impeller body of thickness, through the power transmission mechanism of spliced pole installation connection drive arrangement, owing to have longer screw thread, therefore can make keg impeller better with power transmission mechanism's mounting structure intensity, also can be at the loss of the keg impeller that reduces to a certain extent. For example, the height of the connecting column is 20 to 30 mm. Preferably, the height of the connecting column is 23 mm to 26 mm. Therefore, the length of the thread in the fixing hole is ensured to be appropriate. Referring to fig. 20 and 21, a plurality of keg impeller ribs 1421 are convexly disposed on the protruding portion 142, and each keg impeller rib 1421 extends from the periphery of the keg impeller body 140a to the rotation axis of the keg impeller body 140 in a vortex shape. So, can make keg impeller 140 have a bigger surface area towards one side of the opening direction of keg 130, can set up the protruding muscle of the longer keg impeller of length, can further improve keg impeller 140's rivers disturbance ability to can further improve the cleaning performance to the clothing in the keg. As another example, the mounting post 132 is at least partially positioned within the cavity 143. If the protruding portion 142 is provided with a plurality of keg impeller ribs 1421, the keg impeller ribs 1421 extend in a vortex shape from the periphery of the keg impeller 140 to the rotation axis of the keg impeller 140. So, for the impeller that tradition is flat, can set up the protruding muscle that length is longer in the arch of above-mentioned keg impeller to can improve the rivers disturbance ability among the cleaning process. If so, the convex ribs of each small barrel wave wheel are distributed in an annular array by taking the rotating axis of the small barrel wave wheel body as the center. For example, the number of the small barrel wave wheel convex ribs is 3 to 8. For another example, the ratio of the height of the cavity to the maximum diameter of the keg impeller body is 0.2: 1 to 0.7: 1. for example, the height of the keg impeller is 90 mm to 110 mm. So, can further improve rivers disturbance ability, and then improve the cleaning performance in the keg. It should be noted that the maximum diameter of the cavity is the maximum diameter of the cross section of the cavity along the height direction of the keg, or the diameter of the maximum circular cross section of the keg impeller body along the height direction of the keg. For example, the ratio of the height of the cavity to the diameter of the largest circular cross-section of the cavity is 1/3. So, messenger's cavity holding erection column that can be better, and can set up the protruding muscle of the comparatively suitable keg impeller of length. In one embodiment, the keg impeller convex rib 1421 has a front water-stirring side surface 1421a and a back water-stirring side surface 1421b which are opposite to each other along the circumferential direction of the keg impeller body 140a, the front water-stirring side surface 1421a is located on the side to which the tangential centrifugal force points in the forward rotation process of the keg impeller, the back water-stirring side surface 1421b is located on the side to which the tangential centrifugal force points in the reverse rotation process of the keg impeller, the front water-stirring side surface 1421a has two opposite ends along the extending direction of the keg impeller convex rib, and the front water-stirring side surface 1421a is gradually recessed from the two ends to the middle part along the direction close to the back water-stirring side surface 1421 b; the reverse water stirring side surface 1421b has two opposite ends along the extending direction of the small barrel wave wheel convex rib, and the reverse water stirring side surface 1421b gradually protrudes from the two ends to the middle part along the direction far away from the forward water stirring side surface 1421 a. So, setting up of just dialling water side 1421a and anti-side of dialling 1421b has better water flow disturbance effect, can further improve the cleaning performance of the clothing in the keg. In order to improve the structural strength of the keg impeller, for example, an annular reinforcing rib 1431 extends from the inner surface of the cavity 143 around the rotation axis of the keg impeller 140; as another example, radial ribs 1432 extend from the inner surface of the cavity 143 in the radial direction. As another example, a plurality of radial ribs 1432 are provided. So, through setting up a plurality of annular strengthening ribs 1431 and radial strengthening rib 1432, can play better reinforcing effect to the keg impeller, reduce the spoilage in the keg impeller use. For another example, a plurality of annular reinforcing ribs 1431 are provided, and the plurality of annular reinforcing ribs 1431 are radially spaced apart from the rotation axis of the keg impeller 140. So, be a plurality of annular strengthening rib 1431 of radial interval distribution can further play better reinforcing effect to the keg impeller, reduce the spoilage in the keg impeller use. As another example, the diameter of the mounting post is 1/3 the smallest diameter of the keg. For example, the height of the mounting posts is 80 mm to 110 mm. Thus, the keg impeller can be well installed. For example, the height of the keg wave wheel is 1/4-3/5 of the minimum diameter of the keg, and is preferably 2/5 of the minimum diameter of the keg. So, can improve the clothing cleaning performance in the keg betterly.

When the washing machine with small barrel wave wheel of this application is washd clothes as needs adopt: for example, when the large tub 110 is needed to wash the clothes therein, the small tub and the small tub pulsator are detached from the large tub pulsator, and then the washing is performed by a normal pulsator washing machine. Specifically, the first power output shaft 151 and the second power output shaft 152 can be controlled to rotate to drive the vat 110 and the vat pulsator 120 to rotate respectively, and the rotation directions of the vat 110 and the vat pulsator 120 are controlled to be opposite, so that the washing of the clothes in the vat 110 is completed; when the clothes in the tub 110 need to be dehydrated, the rotation directions of the tub 110 and the tub pulsator 120 are the same by controlling the rotation of the first power output shaft 151 and the second power output shaft 152, and the clothes in the tub 110 are dehydrated by the centrifugal force. It is noted that the vat may be implemented with reference to prior art vats. It should be noted that how to control the rotation direction of the vat or vat pulsator to wash and dewater can be realized by referring to the prior art. For example, when the keg 130 is required to be used for washing the clothes in the keg, after the keg is mounted on the vat pulsator, the second power output shaft 152 and the third power output shaft 153 are controlled to rotate, the second power output shaft 152 drives the keg 130 to rotate through the vat pulsator 120, and the third power output shaft 153 drives the keg pulsator 140 to rotate, so that the rotation direction of the keg pulsator 140 is opposite to the rotation direction of the keg 130, and therefore the effect of strongly stirring the water flow in the keg is achieved, and the washing operation of the clothes in the keg is completed. When the clothes in the keg 130 need to be dehydrated, the clothes in the keg 130 are dehydrated by controlling the second power output shaft 152 and the third power output shaft 153 to rotate, so that the rotation directions of the keg 130 and the keg wave wheel 140 are the same, and the clothes in the keg 130 are dried through the action of centrifugal force. Of course, the specific control method is not limited to this, and other washing methods known in the art may be used, and the keg impeller are only required to be integrated into a common impeller washing machine to control the washing.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A washing tub assembly for a washing machine, comprising:

the bottom wall of the big barrel is provided with a big barrel through hole;

the big barrel impeller is positioned in the big barrel, and a big barrel impeller penetrating hole is formed in the big barrel impeller;

a keg removably mounted on the vat impeller and located in the vat;

a keg impeller located within the keg;

the three-power clutch is provided with three coaxial power output shafts which are respectively a first power output shaft, a second power output shaft and a third power output shaft from outside to inside, the first power output shaft is connected with the big barrel, and the first power output shaft is used for driving the big barrel to rotate; the second power output shaft penetrates through the large barrel through hole and is connected with the large barrel impeller, the second power output shaft is used for driving the large barrel impeller to rotate, and the large barrel impeller can drive the small barrel to rotate under the driving of the second power output shaft; the third power output shaft penetrates through the barrel penetrating hole, the barrel impeller penetrating hole and the small barrel penetrating hole and is detachably connected with the small barrel impeller, and the third power output shaft is used for driving the small barrel impeller to rotate.

2. The washing machine washing barrel assembly according to claim 1, further comprising a barrel flange fixedly connected to the outside of the bottom wall of the barrel, wherein a barrel flange through hole is formed in the middle of the barrel flange, a first bearing ring is fixed outside the first power output shaft, the first bearing ring is fixedly connected to one surface of the barrel flange away from the barrel, the first power output shaft drives the barrel to rotate through the barrel flange, and the second power output shaft sequentially penetrates through the barrel flange through hole and the barrel through hole and is connected to the barrel pulsator.

3. The washing machine tub assembly as claimed in claim 2, wherein the first bearing ring has a plurality of fastening holes, the tub flange has a plurality of through holes corresponding to the fastening holes of the first bearing ring, and the fastening holes of the first bearing ring and the through holes of the tub flange are fastened by screws, respectively.

4. A washing machine washing tub assembly according to claim 3, wherein the fixing holes of the first bearing ring are distributed in a circular array centered on the first power take-off shaft.

5. A washing machine washing barrel assembly according to claim 4, wherein the outer side of the bottom wall of the tub is provided with a plurality of fixing posts, screw holes are formed on the fixing posts, a plurality of through holes corresponding to the fixing posts are formed on the tub flange, and the screw holes on the fixing posts and the through holes on the tub flange are respectively fixed by a screw.

6. A washing machine washing tub assembly as claimed in claim 5, in which the tub flange projects upwardly at its middle, the tub flange through-hole and the through-holes are provided in the projecting region of the tub flange, and the through-holes are provided in the non-projecting region of the tub flange.

7. A washing machine washing tub assembly according to claim 1, further comprising a tub pulsator flange, the big barrel impeller flange plate is fixedly connected with the side surface of the wall of the big barrel impeller close to the big barrel bottom, a fastening hole is arranged in the middle of the big barrel impeller flange, a limit ring is fixed outside the second power output shaft, the end part of the second power output shaft extends out of the limit ring, the part of the second power output shaft extending out of the limit ring comprises a fastening part and a screwed part which are connected, the fastening part is arranged close to the limiting ring, the barrel impeller flange is fixed outside the fastening part through the fastening hole, the big barrel impeller flange plate is abutted against the limit ring, a fixed helicoid is externally screwed on the screwing part, the fixed helicoid is abutted with the barrel impeller flange plate, and the second power output shaft is used for driving the barrel impeller to rotate through the barrel impeller flange plate.

8. The washing machine washing tub assembly of claim 7, wherein the tub pulsator flange has a star-shaped structure, a plurality of end corners of the tub pulsator flange are provided with through holes, one side of the tub pulsator adjacent to the bottom wall of the tub is provided with a plurality of tub screw holes corresponding to the through holes, and each of the through holes and each of the tub screw holes are fixed by a screw in a one-to-one correspondence.

9. The washing machine washing tub assembly of claim 8, further comprising an outer tub, wherein the tub is located in the outer tub, an outer tub mounting hole is formed in a bottom wall of the outer tub, the triple power clutch is fixed on an outer side of the bottom wall of the outer tub, and three coaxial power output shafts of the triple power clutch pass through the outer tub mounting hole.

10. A washing machine, characterized by comprising a washing machine washing tub assembly as claimed in any one of claims 1 to 9.