CN108866968B

CN108866968B - Drum washing machine

Info

Publication number: CN108866968B
Application number: CN201710320171.6A
Authority: CN
Inventors: 吕艳芬; 许升; 李以民; 李洋
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2017-05-09
Filing date: 2017-05-09
Publication date: 2021-09-28
Anticipated expiration: 2037-05-09
Also published as: CN108866968A

Abstract

The invention provides a drum washing machine, which comprises a machine body, a door body and an inner drum, wherein the inner drum is rotatably arranged in the machine body; the front part of the inner cylinder is provided with a feeding opening for taking and placing clothes, and the door body can be opened/closed and is arranged at the front part of the machine body and corresponds to the feeding opening of the inner cylinder; the rotatable sealing sleeve is arranged on the door body or on the machine body at the periphery of the door body, and the feeding port end of the inner cylinder is connected with the sealing sleeve in a sealing mode. The rotatable sealing sleeve is arranged on the door body or the machine body on the periphery of the door body, and the throwing port end of the inner cylinder is in sealing connection with the sealing sleeve, so that the sealing performance of the inner cylinder is ensured, the water containing function of the inner cylinder is realized, and the rotation of the inner cylinder is not influenced to realize the washing and dewatering functions.

Description

Drum washing machine

Technical Field

The invention relates to the technical field of clothes washing equipment, in particular to a drum washing machine.

Background

In the prior art, a drum washing machine generally comprises an inner drum and an outer drum which are mutually sleeved, wherein the outer drum is sealed and used for containing water, and the inner drum is used for containing clothes and beating and washing the clothes by rotating the inner drum; meanwhile, the inner barrel is provided with dehydration holes, so that water in the outer barrel flows into the inner barrel through the dehydration holes to soak the clothes in the inner barrel, the water in the inner barrel flows out of the outer barrel through the dehydration holes, and moisture on the clothes in the inner barrel is discharged to the outer barrel through the dehydration holes when the inner barrel rotates at a high speed, so that the aim of washing the clothes is fulfilled.

However, because the inner cylinder and the outer cylinder are mutually sleeved, dirt is easily accumulated between the inner cylinder and the outer cylinder in the use process of the washing machine; meanwhile, because the inner drum and the outer drum are mutually sleeved, a user cannot clean the outer wall of the inner drum and the inner wall of the outer drum, so that bacteria in the washing machine are increased, and the washing efficiency of the washing machine and the cleanliness of washed clothes are reduced.

Meanwhile, in the existing washing machine, the outer cylinder is sleeved outside the inner cylinder, and clothes are beaten and washed through the rotation of the inner cylinder in the washing process of the washing machine, so that the washing capacity of the washing machine is based on the inner cylinder, the utilization rate of the internal space of the washing machine is low, and the washing capacity of the washing machine cannot be expanded on the existing basis.

In view of this, how to provide a washing machine, so as to integrate the inner and outer drums, and make the inner drum be a sealed container, which can not only contain water and clothes, but also rotate to beat the clothes for washing; meanwhile, because the washing machine is not provided with the outer cylinder or the outer cylinder and the washing machine shell are integrally arranged, the inner cylinder of the washing machine can be expanded to expand the washing capacity of the washing machine, and the development hotspot is generated.

However, since the inner tub is not only used for containing washing water, but also rotated to beat and clean the clothes in the tub, how to provide a water inlet structure and/or a water discharge structure suitable for the above washing machine becomes a problem to be solved urgently.

The present application is particularly proposed in view of the above technical drawbacks.

Disclosure of Invention

In order to solve the above problems, the present invention provides a drum washing machine, specifically, the following technical solution is adopted:

a drum washing machine comprises a machine body, a door body and an inner drum, wherein the inner drum is rotatably arranged in the machine body and contains water in the washing process; the front part of the inner cylinder is provided with a feeding opening for taking and placing clothes, and the door body can be opened/closed and is arranged at the front part of the machine body and corresponds to the feeding opening of the inner cylinder; the rotatable sealing sleeve is arranged on the door body or on the machine body at the periphery of the door body, and the feeding port end of the inner cylinder is connected with the sealing sleeve in a sealing mode.

Furthermore, an annular seat body is arranged on the inner side of the door body, the sealing sleeve is rotatably and hermetically arranged in the annular seat body, a sealing connecting piece is arranged on the periphery of the putting-in opening of the inner cylinder and is hermetically connected with the sealing sleeve into a whole, and the sealing connecting piece drives the sealing sleeve to rotate relative to the machine body along with the rotation of the inner cylinder.

Furthermore, an annular seat body is arranged on the machine body on the periphery of the door body, the sealing sleeve is rotatably and hermetically arranged in the annular seat body, a sealing connecting piece is arranged on the periphery of the putting-in opening of the inner tube, the sealing sleeve and the sealing connecting piece are hermetically connected into a whole when the door body is closed, and the sealing connecting piece drives the sealing sleeve to rotate relative to the door body along with the rotation of the inner tube.

Furthermore, a rolling device is arranged in the annular seat body, and the rolling device is in sealing contact with the sealing sleeve and the annular seat body respectively.

Furthermore, the sealing connecting piece comprises a circular sealing connecting ring, an annular sealing groove is formed in the sealing sleeve, and the circular sealing connecting ring is inserted into the annular sealing groove and is connected with the sealing sleeve in a sealing mode to form a whole.

Furthermore, the sealing connecting ring is arranged at the throwing port end of the inner cylinder through an elastic damping device;

preferably, the elastic damping device is a threaded sealing sleeve, one end of the threaded sealing sleeve is connected with the throwing port end of the inner cylinder in a sealing mode, and the other end of the threaded sealing sleeve is sleeved on one end of the sealing connecting ring.

The water inlet and/or water outlet device further comprises a driving device, the bottom of the inner cylinder is in transmission connection with the driving device through a central rotating shaft, and a water flow channel for water inlet and/or water outlet is arranged in the hollow central rotating shaft.

Further, still include the supporting seat, the supporting seat passes through damping device and installs in the organism, has open cavity that holds in the supporting seat, the bottom setting of inner tube is in the cavity that holds of supporting seat, the rotatable support of central rotating shaft on the diapire of supporting seat.

Furthermore, a water outlet is formed in the bottom of the inner cylinder, and a sealing plug body is arranged on the water outlet; the bottom of supporting seat corresponds sealed cock body installation telescoping device, the telescoping device can stretch out and open sealed cock body back, and the outlet is opened and is carried out the drainage, and the telescoping device withdrawal, sealed cock body resets, and the outlet is closed.

Furthermore, a positioning locking device is installed on the side wall of the supporting seat, a positioning locking hole matched with the positioning locking device is formed in the side wall of the inner barrel, and the positioning locking device is matched and locked with the positioning locking hole to limit the rotation of the inner barrel relative to the supporting seat.

The inner drum of the drum washing machine is a non-porous inner drum with no dewatering holes on the drum wall, and when the drum washing machine is used for washing, washing water is contained in the inner drum, and the inner drum rotates to wash clothes. The drum washing machine of the embodiment can eliminate the outer drum, so that the volume of the inner drum is increased and the capacity of the drum washing machine is increased under the condition that the size of the machine body is not changed. In addition, the inner cylinder is filled with water, so that the problem that the outer wall of the inner cylinder and the inner wall of the outer cylinder are easy to store dirt and dirty as the washing water of the existing washing machine enters between the inner cylinder and the outer cylinder and accumulates along with time is solved.

The drum washing machine of the invention creatively designs the inner barrel into the imperforate inner barrel, because the inner barrel is placed horizontally, the rotatable sealing sleeve is arranged on the door body or the machine body at the periphery of the door body, the throwing port end of the inner barrel is connected with the sealing sleeve in a sealing way, the sealing performance of the inner barrel is ensured, the water containing function of the inner barrel is realized, and the rotation of the inner barrel is not influenced to realize the washing and dewatering functions.

Drawings

FIG. 1 is a front view of a drum washing machine according to an embodiment of the present invention;

FIG. 2 is a partial perspective view of a drum washing machine according to an embodiment of the present invention at A in FIG. 1;

FIG. 3 is a partial perspective view of a drum washing machine according to an embodiment of the present invention at B of FIG. 1;

fig. 4 is a left side view of the drum washing machine according to the embodiment of the present invention.

Reference numerals in the drawings indicate: 1-damping hanging spring 2-water inlet pipe 3-machine body 4-supporting seat 5-door body 6-water collecting flow channel 7-inner cylinder 8-driving device 9-communicating piece 10-central rotating shaft 11-water collecting chamber 12-bearing 13-self-sucking pump 14-water discharging pipe 15-eccentric cam 16-telescopic rod 17-sealing plug body 18-reset spring 19-water discharging valve 20-main water discharging pipe 21-water retaining rib 22-shock absorber 23-rolling device 24-sealing sleeve 25-sealing connecting ring 26-annular seat body 27-elastic shock-absorbing device 29-water discharging port 30-positioning locking hole 31-positioning locking device.

Detailed Description

A drum washing machine according to the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the drum washing machine of the present embodiment includes a machine body 3, a door body 5 and an inner drum 7, wherein the inner drum 7 is rotatably disposed in the machine body 3, and the inner drum 7 contains water during a washing process; the front part of the inner cylinder 7 is provided with a feeding opening for taking and putting clothes, and the door body 5 can be opened/closed and is arranged at the front part of the machine body 3 and corresponds to the feeding opening of the inner cylinder 7; a rotatable sealing sleeve 24 is arranged on the door body 5 or the machine body 3 at the periphery of the door body 5, and the feeding port end of the inner cylinder 7 is connected with the sealing sleeve 24 in a sealing manner.

The inner drum 7 of the drum washing machine of the embodiment is a non-porous inner drum with no dewatering holes on the drum wall, and when washing, washing water is contained in the inner drum 7, and the inner drum 7 rotates to wash clothes. The drum washing machine of the embodiment can eliminate the outer drum, thus increasing the volume of the inner drum 7 and the capacity of the drum washing machine under the condition of keeping the size of the machine body unchanged. In addition, the inner cylinder 7 is filled with water, so that the problem that the outer wall of the inner cylinder and the inner wall of the outer cylinder are easy to store dirt and dirty as the washing water of the existing washing machine enters between the inner cylinder and the outer cylinder and accumulates along with time is solved.

Because the drum washing machine realizes washing by lifting/beating clothes through the rotation of the inner drum 7, the outer drum of the existing drum washing machine mainly has the function of containing water, and the sealing is realized through the outer drum because the outer drum is fixed. The drum washing machine of the embodiment creatively designs the inner barrel 7 into a non-porous inner barrel, because the inner barrel 7 is horizontally placed, the rotatable sealing sleeve 24 is arranged on the door body 5 or the machine body 3 at the periphery of the door body 5, the throwing port end of the inner barrel 7 is in sealing connection with the sealing sleeve 24, the sealing performance of the inner barrel 7 is ensured, the water containing function of the inner barrel 7 is realized, and the rotation of the inner barrel 7 is not influenced to realize the washing and dewatering functions.

As an embodiment of the present invention, an annular seat body 26 is disposed on an inner side of the door body 5 in this embodiment, the sealing sleeve 24 is rotatably and sealingly installed in the annular seat body 26, a sealing connector is disposed on a periphery of the input port of the inner cylinder 7, the sealing connector and the sealing sleeve 24 are sealingly connected into a whole, and the sealing connector rotates along with the inner cylinder 7 to drive the sealing sleeve 24 to rotate relative to the machine body 3. In the embodiment, sealing is realized through the matching between the rotatable sealing sleeve 24 on the door body 5 and the sealing connecting piece on the inner cylinder 7, the door body 5 is separated when opened, and the door body 5 is connected in a dynamic sealing manner when closed, so that the structure is simple, and the opening and closing of the door body 5 are not influenced.

As another embodiment of the present invention, an annular seat body 26 is disposed on the body 3 at the periphery of the door body 5 in this embodiment, the sealing sleeve 24 is rotatably and sealingly mounted in the annular seat body 26, a sealing connector is disposed at the periphery of the input port of the inner cylinder 7, the sealing sleeve 24 and the sealing connector are sealingly connected into a whole when the door body 5 is closed, and the sealing connector drives the sealing sleeve 24 to rotate relative to the door body 5 along with the rotation of the inner cylinder 7. In the embodiment, the sealing is realized through the matching between the rotatable sealing sleeve 24 on the machine body 3 at the periphery of the door body 5 and the sealing connecting piece on the inner barrel 7, the door body 5 is always kept to be sealed regardless of the opening and closing, the structure is simple, and the influence of the opening and closing state of the door body 5 is avoided.

In order to realize the relative rotation between the sealing sleeve 24 and the door body 5 or the machine body 7, and thus not influence the rotation of the inner cylinder 7 which is connected with the sealing sleeve 24 into a whole in a sealing way, the annular seat body 26 is internally provided with the rolling device 23, and the rolling device 23 is in sealing contact with the sealing sleeve 24 and the annular seat body 26 respectively. The sealing sleeve 24 and the annular seat body 26 of the present embodiment are relatively rotated by the rolling device 23, specifically, the rolling device may be a ball or the like.

As a preferred embodiment of the present invention, the sealing connector in this embodiment includes an annular sealing connecting ring 25, an annular sealing groove is disposed on the sealing sleeve 24, and the annular sealing connecting ring 25 is inserted into the annular sealing groove and is connected with the sealing sleeve 24 in a sealing manner.

Further, the sealing connection ring 25 of the present embodiment is mounted at the throwing opening end of the inner cylinder 7 through an elastic damping device 27. Because the drum washing machine is in operation, the inner cylinder 7 inevitably shakes or shakes, the sealing connection ring 25 is installed on the inner side of the door body 5 through the elastic damping device 27 in the embodiment, so that when the sealing connection ring 25 is inserted into the annular sealing groove and is connected with the sealing sleeve 24 in a sealing manner into a whole, the connection between the inner cylinder 7 and the door body 5 is also elastic connection, the inner cylinder 7 can be effectively buffered and damped, and the operation stability of the inner cylinder 7 is improved.

Preferably, the elastic damping device 27 is a threaded sealing sleeve, one end of the threaded sealing sleeve is connected with the throwing port end of the inner cylinder 7 in a sealing manner, and the other end of the threaded sealing sleeve is sleeved on one end of the sealing connecting ring 25.

The drum washing machine of the embodiment solves the problems of water inlet and water outlet at the same time, and the specific scheme is as follows:

the drum washing machine of the embodiment further comprises a driving device 8, the bottom of the inner drum 7 is in transmission connection with the driving device 8 through a central rotating shaft 10, and the central rotating shaft 10 is hollow so as to be provided with a water flow channel for water inlet and/or water discharge.

In the present embodiment, the water flow passage is provided in the central rotating shaft 10, so that water can be supplied to or discharged from the washing machine through the water flow passage, and the water supply and discharge are not affected by the rotation of the inner tub.

Preferably, a water flow channel is disposed in the central rotating shaft 10 of this embodiment, and the water flow channel is communicated with a water inlet device or a water outlet device of the drum washing machine, and the water flow channel in the central rotating shaft 10 of this embodiment can only realize a separate water inlet or water outlet function.

Or, a plurality of water flow channels respectively communicating with the water inlet device and the water outlet device are provided in the central rotating shaft 10 according to this embodiment, so that the water flow channels in the central rotating shaft 10 can simultaneously realize water inlet and water outlet.

As a preferred embodiment of the present invention, one end of the central rotating shaft 10 extends out of the driving device 8, the extending end of the central rotating shaft 10 is rotatably mounted on the communicating member 9 through a bearing 31, and the communicating member 9 has a communicating channel therein, and the communicating channel communicates the water flow passage with the water inlet device/the water outlet device.

The present invention will be described in detail by taking the example of realizing drainage through the water flow channel in the central rotating shaft 10 as an example, and the water flow channel in the central rotating shaft 10 of the present embodiment is communicated with a drainage device to realize a drainage function. Specifically, the drainage device described in this embodiment includes drain pipe 14 and self priming pump 13, and the water inlet of self priming pump 13 passes through the rivers runner intercommunication in drain pipe 14 and the central pivot 10.

Because the central rotating shaft 10 is positioned at the center of the bottom of the inner cylinder 7 and is not positioned at the lowest position of the inner cylinder, in order to ensure better discharge of the washing water in the inner cylinder 7, a water collecting device for collecting water in the dehydration and/or drainage process is arranged on the inner wall of the rear cylinder bottom of the inner cylinder 7 and is communicated with the water flow channel; during dewatering and/or draining, the water collector collects the water in the inner cylinder and discharges the water under the suction of the self-sucking pump 13.

Specifically, the water collecting device described in this embodiment has a water collecting cavity 11 and a water collecting channel 6, the water collecting cavity 11 is disposed at the center of the inner wall of the rear cylinder bottom of the inner cylinder 28 and is communicated with the water flow channel in the central rotating shaft 10, the water collecting channel 6 is disposed on the inner wall of the rear cylinder bottom of the inner cylinder, one end of the water collecting channel 6 is communicated with the water collecting cavity 11, and the other end extends toward the inner wall of the inner cylinder 28.

Preferably, the water collecting flow passage 6 comprises a plurality of flow passages, which are respectively and uniformly distributed along the circumferential direction of the rear cylinder bottom of the inner cylinder 28.

In order to cooperate with a water collecting device to collect water, one end, opposite to the rear cylinder bottom, of the inner cylinder 7 in the embodiment is a front cylinder cover, the diameter of the front cylinder cover is smaller than that of the rear cylinder bottom, and the side wall of the inner cylinder 7 is obliquely and upwards arranged from the front cylinder cover to the rear cylinder bottom.

In order to realize the water collecting effect of the water collecting device, the inner cylinder 7 rotates in coordination with the rotation of the inner cylinder 7, and the washing water is gathered on the surface of the side wall of the inner cylinder 7 under the centrifugal action, so that the washing water is gathered from the front cylinder cover to the bottom of the rear cylinder along the inclined side wall of the inner cylinder 28 due to the inclined structure of the side wall and is introduced into the water collecting chamber through the water collecting flow channel 6 arranged at the position.

Therefore, the drum washing machine of the embodiment realizes water collection and drainage by means of high-speed rotation of the inner drum 7 in the dehydration process, can increase a drainage procedure for drainage after the washing process, and realizes drainage by improving high-speed rotation of the inner drum 7.

As a preferred implementation manner of this embodiment, the water collecting device described in this embodiment includes a cover plate, and the cover plate is installed on the inner wall of the rear cylinder bottom of the inner cylinder: the cover plate is internally provided with a closed hollow cavity to form a water collecting cavity 11 and a water collecting flow channel 6, or the cover plate is internally provided with an open groove, and the cover plate is hermetically connected with the inner wall of the bottom of the rear cylinder of the inner cylinder to seal the groove to form the water collecting cavity 11 and the water collecting flow channel 6.

As a preferred embodiment of this embodiment, the upper surface of the water collecting device is configured with a protrusion structure protruding from the bottom of the inner tub, and the protrusion structure can lift the laundry during washing, thereby improving the washing effect.

The drum washing machine of this embodiment still includes supporting seat 4, and supporting seat 4 passes through damping device to be installed in organism 3, has open cavity that holds in supporting seat 4, the bottom setting of inner tube 7 is in the cavity that holds of supporting seat 4, the rotatable support of central pivot 10 on the diapire of supporting seat.

The support seat 4 of the embodiment mainly plays a role in supporting and damping the inner drum 7, and ensures the working stability of the washing machine. Therefore, the opening of the supporting seat 4 is suspended, and is not required to be connected with the machine body 3 in a sealing manner. The supporting base 4 at least includes a bottom wall for supporting the central rotating shaft 10, and the length of the side wall can be shortened or even eliminated. In particular, the support seat 4 of the present embodiment is preferably a basin-like structure.

Further, the damping device of this embodiment includes a damper 22 and a damping hanging spring 1, the damper 22 is installed in the middle of the bottom side wall of the support seat 4, and the damping hanging spring 1 is hung on the top side wall of the support seat 4.

Preferably, the shock-absorbing suspension spring 1 is mounted on the top side wall of the supporting seat 4 near one end of the driving device, and the two shock absorbers 22 are symmetrically mounted on the two sides of the bottom side wall of the outer cylinder 5.

As a preferred embodiment of this embodiment, since the drainage mode of the central rotating shaft 10 needs to be implemented in cooperation with the high-speed rotation of the inner cylinder 7, this embodiment provides a corresponding drainage structure for the drainage of the washing process on the basis of the support seat 4.

Specifically, a water outlet 29 is formed in the bottom of the inner cylinder 7, and a sealing plug body 17 is mounted on the water outlet 29; the bottom of the supporting seat 4 is provided with a telescopic device corresponding to the sealing plug body 17, the telescopic device can stretch out to jack the sealing plug body 17, the water outlet is opened to drain water, the telescopic device retracts, the sealing plug body resets, and the water outlet is closed.

Therefore, the drum washing machine of the present embodiment can drain water during the washing process by controlling the expansion device to open the drain port 29, and can drain water during the dehydration process through the water flow passage inside the central rotating shaft 10.

Furthermore, a return spring 18 connected with the sealing plug body 17 is arranged in the water outlet 29 of the embodiment, the telescopic device retracts, and the sealing plug body 17 is reset under the elastic action of the return spring 18.

The telescopic device of the embodiment comprises an eccentric cam 15 which is driven by a motor to rotate and a telescopic rod 16 which is rotatably connected with the eccentric cam 15, wherein the eccentric cam 15 drives the telescopic rod 16 to move upwards to push the sealing plug body 17 open to enable the water outlet 29 to be opened for water drainage.

In the embodiment, an outer cylinder water outlet is arranged on the support seat 4 corresponding to the water outlet 29 of the inner cylinder 7, the outer cylinder water outlet is connected with the main water drainage pipe 20, a water retaining rib 21 is arranged on one side of the outer cylinder water outlet, and the water retaining rib 21 blocks the washing water between the water retaining rib 21 and the bottom wall of the support seat 4, so that excessive washing water is prevented from contacting with the inner surface of the support seat 4, and dirt is prevented from being accumulated on the inner wall of the support seat 4.

The drain pipe 14 of the present embodiment is communicated with a main drain pipe 20, and the main drain pipe 20 is connected to a drain valve 19.

In order to realize the corresponding matching between the telescopic device and the sealing plug body 17, a positioning locking device 31 is installed on the side wall of the supporting seat 4, a positioning locking hole 30 matched with the positioning locking device 31 is formed in the side wall of the inner cylinder 7, the positioning locking device 31 is matched and locked with the positioning locking hole 30, and the rotation of the inner cylinder 7 relative to the supporting seat 4 is limited. In the embodiment, the locking device 31 is matched and locked with the locking hole 30, the inner cylinder 7 is locked, the telescopic device is just opposite to the sealing plug body 17, and the drainage control of the sealing plug body 17 is better realized.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A drum washing machine is characterized by comprising a machine body, a door body and an inner drum, wherein the inner drum is rotatably arranged in the machine body and contains water in the washing process; the front part of the inner cylinder is provided with a feeding opening for taking and placing clothes, and the door body can be opened/closed and is arranged at the front part of the machine body and corresponds to the feeding opening of the inner cylinder; set up annular pedestal on the organism of the inboard of the door body or door body periphery annular pedestal in the rotatable seal cover of seal installation, annular pedestal in set up the rolling device, sealing contact respectively between rolling device and seal cover, the annular pedestal, the periphery of the mouth of puting in of inner tube sets up sealing connecting piece, sealing connecting piece include annular sealing connection circle of circle, sealing connection circle pass through elastic shock absorber device and install the mouth end of puting in at the inner tube, set up annular seal groove on the seal cover, annular sealing connection circle of circle insert annular seal groove in as an organic whole with seal cover sealing connection when the door body is closed, sealing connecting piece rotate along with the inner tube and drive the relative organism of seal cover and rotate.

2. A drum washing machine as claimed in claim 1, characterized in that the elastic damping device is a threaded sealing sleeve, one end of which is connected with the input end of the inner drum in a sealing manner, and the other end of which is sleeved on one end of the sealing connection ring.

3. A drum washing machine according to any one of claims 1-2, characterized by further comprising a driving device, wherein the bottom of the inner drum is in transmission connection with the driving device through a central rotating shaft, and the central rotating shaft is hollow inside to arrange a water flow channel for water inlet and/or water discharge.

4. A drum washing machine according to claim 3, characterized by further comprising a supporting base installed in the machine body through a damping device, the supporting base having an open receiving cavity therein, the bottom of the inner drum being disposed in the receiving cavity of the supporting base, the central rotating shaft being rotatably supported on the bottom wall of the supporting base.

5. A drum washing machine according to claim 4, characterized in that the bottom of the inner drum is provided with a water outlet, and a sealing plug body is arranged on the water outlet; the bottom of supporting seat corresponds sealed cock body installation telescoping device, the telescoping device can stretch out and open sealed cock body back, and the outlet is opened and is carried out the drainage, and the telescoping device withdrawal, sealed cock body resets, and the outlet is closed.

6. A drum washing machine according to claim 4, characterized in that the side wall of the supporting seat is provided with a positioning locking device, the side wall of the inner drum is provided with a positioning locking hole for matching with the positioning locking device, and the positioning locking device is matched and locked with the positioning locking hole to limit the rotation of the inner drum relative to the supporting seat.

7. A drum washing machine according to claim 5, characterized in that the side wall of the supporting seat is provided with a positioning locking device, the side wall of the inner drum is provided with a positioning locking hole for matching with the positioning locking device, and the positioning locking device is matched and locked with the positioning locking hole to limit the rotation of the inner drum relative to the supporting seat.