A water switch device for water inlet of the washing drum of a self-cleaning drum washing machine

Abstract

The water switch device for water inlet of the washing drum of the present invention, which is a washing machine that does not require cleaning, relates to the technical field of water-saving washing machines. It overcomes the defects of inconvenient water inlet and water leakage of the existing water-saving drum washing machines. A drain hole is provided near the periphery of the bottom of the washing drum. A water sealing plate that can move back and forth to seal or open the drain hole is also provided between the bottom of the washing drum and the flange. The water sealing plate is installed and connected to a hollow water inlet shaft. One end of the water inlet shaft axially and movably seals through the bottom of the washing drum. A radially rotatable clutch sleeve is provided outside the other end and is axially locked by a positioning member. An inlet nozzle that is axially and sealingly connected to the water inlet shaft is connected to the clutch sleeve. The product of the present invention, by providing a water switch device on the washing drum and connecting the hollow water inlet shaft to the water inlet pipe, not only facilitates water inlet, but also can effectively open or close the washing drum, prevent washing water from leaking, and save water resources.

Description

Technical Field

[0001] The present invention relates to the technical field of water-saving washing machines, and particularly to a water switch device for the water inlet of a washing drum of a self-cleaning drum washing machine. Background Art

[0002] At present, for a self-cleaning drum washing machine, since the washing drum rotates during washing, the washing water is likely to leak during washing, wasting water resources and the clothes are not thoroughly cleaned. Therefore, how to set the washing drum so that it can discharge water conveniently and prevent the washing water from leaking during washing is a technical problem that needs to be solved urgently at present. Summary of the Invention

[0003] The object of the present invention is to provide a water switch device for the water inlet of a washing drum of a self-cleaning drum washing machine. A water switch device is provided on the washing drum, and the hollow water inlet shaft is connected to the water inlet pipe, which not only facilitates water inlet, but also can effectively open or close the washing drum to prevent the washing water from leaking and save water resources.

[0004] According to the above object, the technical solution of the present invention is: a water switch device for the water inlet of a washing drum of a self-cleaning drum washing machine, including a non-porous washing drum body concentrically installed in an outer cylinder, and the circumference of the bottom of the washing drum connected to the washing drum body is connected to a shaft sleeve through a flange. The shaft sleeve is rotatably installed in the central hole at the bottom of the outer cylinder. It is characterized in that: a drain hole is provided near the periphery of the bottom of the washing drum, and a water sealing plate capable of moving back and forth to seal or open the drain hole is further provided between the bottom of the washing drum and the flange. The water sealing plate is installed and connected to a hollow water inlet shaft. The water inlet shaft is installed in the shaft sleeve through a spline sleeve and can move back and forth. One end of the water inlet shaft axially and movably seals through the bottom of the washing drum, and a radially rotatable clutch sleeve is provided outside the other end and is axially locked through a positioning member. An elastic member is provided between the water inlet shaft and the shaft sleeve. The clutch sleeve is axially and sealingly connected to a water inlet nozzle communicated with the water inlet shaft, and a power member for applying a force to the water inlet shaft in the direction opposite to the elastic member is connected to the clutch sleeve in the radial direction.

[0005] Further, a ring rib is provided in the shaft sleeve. One end of the elastic member is connected to the ring rib, and the other end is connected to the clutch sleeve. Under the action of the elastic member, the water inlet shaft moves outwards.

[0006] Or, further, a ring rib is provided in the shaft sleeve. One end of the elastic member is connected to the ring rib, and the other end is connected to a step outside the water inlet shaft. Under the action of the elastic member, the water inlet shaft moves towards the inside of the washing drum.

[0007] Furthermore, bearings and water seals are provided in the shaft sleeve and the central hole at the bottom of the outer cylinder.

[0008] Further, a front plate is provided in front of the washing cylinder, and a loading opening is provided on the front plate; alternatively, a door cover is provided on the loading opening.

[0009] Further, water deflecting ribs are provided inside the washing cylinder; the water deflecting ribs are spiral and inclined with respect to the center line.

[0010] Further, the shaft sleeve is connected with a power wheel through a spline or a square tenon and is locked and connected through a belt pulley positioning member.

[0011] Further, the joint between the drain hole at the bottom of the washing cylinder and the water sealing plate is an annular surface.

[0012] Further, the water inlet nozzle is connected with an external water inlet valve.

[0013] Further, a switching valve is provided between the water sealing plate and the bottom of the washing cylinder. A push plate inclined surface is provided on the water sealing plate. The switching valve includes a valve body. A valve inlet and a valve drain that are vertically arranged and communicated with the drain hole are provided on the valve body. A valve plug is further provided on the valve body. A return compression spring is provided between the valve plug and the valve body. By moving the push plate inclined surface, the valve plug or the elastic force of the return compression spring is compressed into the valve body to close or open the valve inlet and the valve drain.

[0014] There are several of the switching valves, which are arranged circumferentially. The push plate inclined surfaces on the water sealing plate are connected to the switching valves one by one.

[0015] Further, a tilting valve is provided between the water sealing plate and the bottom of the washing cylinder. The tilting valve includes a tilting valve cover and a tilting valve body. The tilting valve cover and the tilting valve body are movably connected together through a pin shaft. A torsion spring is installed on the pin shaft. A tilting valve drain is provided on the tilting valve body. The tilting valve drain is opposite to the drain hole on the bottom of the washing cylinder. Driven by the water inlet shaft, the outer peripheral edge of the water sealing plate is linked to push open the tilting valve cover, and the tilting valve drain is opened. When the water inlet shaft returns to its original position, the tilting valve drain is closed by the tilting valve cover under the torsion of the torsion spring.

[0016] There are several of the tilting valves, which are arranged circumferentially on the bottom of the washing cylinder. The outer peripheral edge on the water sealing plate is connected to the tilting valves correspondingly.

[0017] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: For the product of the present invention, by providing a water switching device on the washing cylinder and connecting the hollow water inlet shaft with the water inlet pipe, it is not only convenient for water inlet, but also can effectively open or close the washing cylinder, prevent washing water from leaking, and save water resources. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0019] Figure 1 This is a schematic diagram of the structure of the washing drum shaft sleeve in a partially closed state according to the first embodiment of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the washing drum shaft sleeve portion in an open state according to the first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the washing drum in the closed state of the first embodiment of the product of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the washing drum in the open state of the product embodiment 1 of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the washing drum in the closed state of the second embodiment of the product of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the washing drum in the open state of the second embodiment of the product of the present invention;

[0025] Figure 7 This is an enlarged structural schematic diagram of the switch valve of the second product embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the washing drum in the closed state of the third embodiment of the product of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the washing drum in the open state of the third embodiment of the product of the present invention;

[0028] Figure 10 This is a schematic diagram of the enlarged structure of the valve of the third embodiment of the product of the present invention;

[0029] In the figure: 1. Water inlet nozzle; 2. Positioning component; 3. Clutch sleeve; 4. Elastic component; 5. Bush; 6. Water inlet shaft; 7. Spline sleeve; 8. Flange; 9. Water seal plate; 10. Belt pulley positioning component; 11. Power wheel; 12. Bearing; 13. Water seal; 14. Outer cylinder; 15. Bottom of washing cylinder; 16. Drain hole; 17. Washing cylinder body; 18. Front plate; 19. Loading opening; 20. Water deflecting rib; 21. Inclined surface of push plate; 22. Switch valve; 221. Valve plug; 222. Return compression spring; 223. Valve body; 224. Valve drain port; 225. Valve water inlet; 23. Tilting valve; 231. Tilting valve cover; 232. Tilting valve body; 233. Tilting valve drain port; 234. Torsion spring; 235. Pin shaft. Detailed implementation mode

[0030] Combined with Figures 1 to 4 , it is a schematic structural diagram of the first embodiment of the water switch device for the washing cylinder water inlet of the self-cleaning drum washing machine of the present invention. The washing cylinder sleeved in the outer cylinder 14 is composed of a washing cylinder body 17, a front plate 18 and a washing cylinder bottom 15 with a flat periphery. Among them, the washing cylinder body 17 is designed without holes, and a circle of drain holes 16 are opened around the washing cylinder bottom 15. A loading opening 19 for loading clothes is opened on the front plate 18, and a door cover or the like may be provided at the loading opening 19.

[0031] The washing cylinder bottom 15 is fixedly connected to the flange 8 at the periphery, but there is enough space between the two. A water seal plate 9 is coaxially arranged in this space. The water seal plate 9 can rotate synchronously with the washing cylinder, rotate in the reverse direction, or one of them rotates while the other does not move. The flange 8 is fixedly connected to the bush 5 that passes through the bottom of the outer cylinder 15 through the bearing 12 and the water seal 13, while the water seal plate 9 is fixedly connected to the water inlet shaft 6. The water inlet shaft 6 is concentrically installed in the bush 5 through the spline sleeve 7 and can move a certain distance along the axis of the bush 5. A clutch sleeve 3 is also movably installed in the water inlet shaft 6 and is fixedly connected to the water inlet shaft 6 through the positioning component 2. The clutch sleeve 3 is restricted by the positioning component 2 and the end of the bush 5 in the axial space, but the clutch sleeve 3 moves axially synchronously with the water inlet shaft 6, but can rotate freely with respect to each other in the circumferential direction. An elastic component 4 is arranged between the clutch sleeve 3 and the annular rib inside the bush 5. When the clutch sleeve 3 is under the action of an external traction motor or other power components, it can move a certain distance along the axis and block at the end of the bush 5, thereby driving the water inlet shaft 6 and the water seal plate 9 to move synchronously, such as Figure 1 The closed state. Such as Figure 2As shown in the figure, when the power of the externally connected traction motor or other power components disappears, the elastic component 4 causes the clutch sleeve 3, the water inlet shaft 6, and the water seal plate 9 to return to their original positions and be in an open state. Without the action of an external traction motor or the like, the elastic component 4 pushes the water inlet shaft 6 to the outside of the outer cylinder 14, causing the water seal plate 9 to separate from the bottom of the washing cylinder 3, thereby opening the drain hole 16. The washing machine enters the drainage and dehydration state, and the water in the washing cylinder is discharged into the outer cylinder 14 through the drain hole 4 and then discharged from the drain port provided on the outer cylinder 14. Under the action of an external traction motor, the clutch sleeve 3 pushes the water inlet shaft 6 and the water seal plate 9 to move to the inner side of the bottom of the outer cylinder 14, thereby closing the drain hole 16. The washing cylinder is in a closed state. The water inlet nozzle 1 at the end of the water inlet shaft 6 is connected to an external water inlet valve, and water enters the washing cylinder. After reaching the set water volume, the washing state is entered.

[0032] The water deflecting ribs 20 in the washing cylinder are arranged in a spiral shape and are inclined relative to the center line, deflecting the water in the washing cylinder towards the bottom of the washing cylinder 15 so as to be discharged through the drain hole 16.

[0033] The end of the bushing 5 has a spline or square key structure to connect to the power wheel 11, such as the rotor or pulley of a variable frequency motor, and is locked at the rear by the positioning component 10.

[0034] The connection between the bottom of the washing cylinder 15 and the flange 8 can also be made into a special shape, so that the water seal plate 9 has an annular surface here, and the drain hole can be directly opened on the washing cylinder body 17 for direct discharge.

[0035] The clutch sleeve 3, the elastic component 4, and the water inlet shaft 6 can be designed in the reverse direction, that is, the elastic component 4 pushes the water inlet shaft 6 to the outside of the bottom of the outer cylinder 14, and an external force such as a traction motor pushes the clutch sleeve 3, and then pushes the water seal plate 9 to move to the inner side of the bottom of the outer cylinder 14.

[0036] Combined Figures 5 to 7 , it is a schematic structural diagram of the second embodiment of the water switch device for water inlet of the washing cylinder of the self-cleaning drum washing machine of the present invention. Specifically, it is a push plate type water-saving drum washing machine with a switching valve. One or more valves 22 are fixedly installed on a part of the bottom of the washing cylinder 15. The valve 22 is composed of a valve body 223 and a valve plug 221, and a return compression spring 222 is installed between the two. The valve body has a valve drain port 224, a valve water inlet 225 and other structures. When installed, the valve water inlet faces the washing cylinder drain port 16 on the bottom of the washing cylinder 15.

[0037] The water seal plate 9 is composed of a disc-shaped body and a push plate inclined surface 21 with the same number as the number of valves. When the clutch sleeve 3 drives the water inlet shaft 6 and the fixedly connected water seal plate 9 to be pushed to the inner side of the outer cylinder 14 under the action of an external force such as a tractor, the push plate inclined surface 21 pushes the valve plug 221 to move axially until it abuts against the bottom surface of the valve body 223, sealing the valve drain port 224 and the valve water inlet 225. Therefore, the washing cylinder is in a closed state and is in the washing and water inlet states.

[0038] When the external force such as the tractor disappears, the clutch sleeve 3, together with the water inlet shaft 6 and the water sealing disc 9, is pushed to the outside of the outer cylinder 14 under the action of the elastic member 4. At this time, the push plate inclined surface 21 disengages from the valve plug 221, and the valve plug 221 is axially pulled out under the action of the reset compression spring 222, so that the valve water inlet 225 and the valve water outlet 224 on the valve body 223 are opened, and the machine enters the drainage and dehydration process.

[0039] Combined Figures 8 to 10 , FIG. 3 is a schematic structural diagram of the third embodiment of the water switch device for water inlet of the washing cylinder of the self-cleaning drum washing machine of the present invention, specifically a push plate type water-saving drum washing machine with a tilting valve. One or more tilting valves 23 are fixedly installed on a part of the bottom 15 of the washing cylinder. The tilting valve 23 is composed of a tilting valve cover 231 and a tilting valve body 232, and the two are installed together through a pin shaft 235. A torsion spring 234 is installed on the pin shaft 235. There is a tilting valve drainage port 233 on the tilting valve body 232. When installed, the tilting valve drainage port 233 faces the washing cylinder drainage port 16 on the bottom 15 of the washing cylinder.

[0040] When the clutch sleeve 3 drives the water inlet shaft 6 and the fixedly connected water sealing disc 9 to be pushed to the inside of the outer cylinder 14 under the action of an external force such as a tractor, the water sealing disc 9 disengages from the tilting valve cover 231, and the tilting valve 23, under the action of the torsion spring 234, presses the tilting valve cover 231 tightly against the tilting valve body 232, so that the tilting valve drainage port 233 is in a closed state. Therefore, the washing cylinder is in a closed state and is in the washing and water inlet state.

[0041] When the external force such as the tractor disappears, the clutch sleeve 3, together with the water inlet shaft 6 and the water sealing disc 9, is pushed to the outside of the outer cylinder 14 under the action of the elastic member 4. The edge of the water sealing disc 9 pushes the tilting valve cover 231 to rotate a certain angle around the pin shaft 235, and the tilting valve drainage ports 233 on the tilting valve cover 231 and the tilting valve body 232 are disengaged, and the tilting valve drainage port 233 is opened, and the water in the washing cylinder is discharged through the tilting valve 23, and the machine enters the drainage and dehydration process.

Claims

1. A water switch device for water inlet of a washing drum of a self - cleaning drum washing machine, comprising a concentric non - porous washing drum body (17) installed inside an outer drum (14), a washing drum bottom (15) connected to the washing drum body (17), and the circumference of the washing drum bottom (15) is connected to a bushing (5) through a flange (8). The bushing (5) is rotatably installed in the central hole at the bottom of the outer drum (14), and is characterized in that: The bottom (15) of the washing drum is provided with a drainage hole (16) near the periphery. A water sealing disk (9) which can move forward and backward to seal or open the drainage hole (16) is also provided between the bottom (15) of the washing drum and the flange (8). The water sealing disk (9) is fixedly installed and connected to the hollow water inlet shaft (6). The water inlet shaft (6) is installed in the shaft sleeve (5) through a spline sleeve (7) so as to move forward and backward. One end of the water inlet shaft (6) passes through the bottom (15) of the washing drum in an axially movable and sealed manner. The other end of the water inlet shaft (6) is provided with a radially rotatable clutch sleeve (3) on the outside and is axially locked by a positioning component (2). An elastic component (4) is provided between the water inlet shaft (6) and the shaft sleeve (5). The clutch sleeve (3) is axially sealedly connected to a water inlet nozzle (1) which is connected to the water inlet shaft (6). The clutch sleeve (3) is radially connected to a power component which moves the water inlet shaft (6) in the opposite direction of the force of the elastic component (4). A front plate (18) is provided in front of the washing drum, and a feeding port (19) is provided on the front plate (18); The feeding port (19) is provided with a door cover; Wherein, a switch valve (22) is provided between the water sealing disk (9) and the bottom (15) of the washing drum, the water sealing disk (9) is provided with a push plate inclined surface (21), the switch valve (22) comprises a valve body (223), the valve body (223) is provided with a valve water inlet (225) and a valve water outlet (224) which are vertically arranged and communicate with the water discharge hole (16), the valve body (223) is also provided with a valve plug (221), a return pressure spring (222) is provided between the valve plug (221) and the valve body (223), the valve plug (221) is compressed into the valve body (223) by the movement of the push plate inclined surface (21) to close the valve water inlet (225) and the valve water outlet (224), and the valve plug (221) opens the valve water inlet (225) and the valve water outlet (224) under the elastic force of the return pressure spring (222); Alternatively, a valve (23) is provided between the water sealing tray (9) and the bottom (15) of the washing tub, the valve (23) comprising a valve cover (231) and a valve body (232), the valve cover (231) and the valve body (232) being movably connected together via a pin shaft (235), a torsion spring (234) being mounted on the pin shaft (235), a valve drain outlet (233) being provided on the valve body (232), the valve drain outlet (233) being directly opposite to the drain hole (16) on the bottom (15) of the washing tub, and driven by the water inlet shaft (6), the outer peripheral edge of the water sealing tray (9) is linked with the water sealing tray to push open the valve cover (231), and the valve drain outlet (233) is opened, and when the water inlet shaft (6) returns to its original position, the valve drain outlet (233) is closed by the valve cover (231) under the torsion of the torsion spring (234).

2. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to claim 1, characterized in that: The shaft sleeve (5) is provided with an annular rib, one end of the elastic component (4) is connected to the annular rib, and the other end is connected to the clutch sleeve (3). Under the action of the elastic component (4), the water inlet shaft (6) moves outward.

3. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to claim 1, characterized in that: The bushing (5) is provided with a ring rib inside. One end of the elastic member (4) is connected to the ring rib, and the other end is connected to a step outside the water inlet shaft (6). Under the action of the elastic member (4), the water inlet shaft (6) moves towards the inside of the washing cylinder.

4. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to any one of claims 1 to 3, characterized in that: A bearing (12) and a water seal (13) are provided in the central hole at the bottom of the bushing (5) and the outer cylinder (14).

5. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to any one of claims 1 to 3, characterized in that: The washing cylinder is provided with water deflecting ribs (20).

6. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to claim 5, characterized in that: The water deflecting ribs (20) are spiral and inclined with respect to the center line.

7. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to any one of claims 1 to 3, characterized in that: The bushing (5) is connected with a power wheel (11) through a spline or a square tenon and is tightly connected through a belt wheel positioning member (10).

8. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to any one of claims 1 to 3, characterized in that: The joint between the drain hole (16) at the bottom of the washing cylinder bottom (15) and the water sealing disc (9) is an annular surface.

9. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to any one of claims 1 to 3, characterized in that: The water inlet nozzle (1) is connected to an external water inlet valve.

10. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to claim 1, characterized in that: There are several switching valves (22), which are arranged circumferentially. The push plate inclined surfaces (21) on the water sealing disc (9) are connected to the switching valves (22) one by one.

11. The water switch device for water inlet of a washing drum of a self - cleaning drum washing machine according to claim 1, characterized in that: There are several tilting valves (23), which are arranged circumferentially on the bottom of the washing cylinder (15). The outer peripheral edge of the water sealing disc (9) is connected to the tilting valves (23) correspondingly.

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