CN110878465A

CN110878465A - Impeller washing machine and spraying system and outer barrel cover thereof

Info

Publication number: CN110878465A
Application number: CN201811028842.2A
Authority: CN
Inventors: 许升; 赵志强; 吕佩师; 赵新宇
Original assignee: Qingdao Haier Washing Machine Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd
Priority date: 2018-09-05
Filing date: 2018-09-05
Publication date: 2020-03-13

Abstract

The invention belongs to the field of spraying equipment, and particularly provides a pulsator washing machine, a spraying system and an outer barrel cover thereof. The invention aims to solve the problem that the existing impeller type washing machine with the spraying function has poor effect when spraying clothes. To this end, the spray system of the present invention includes a circulation pump and a plurality of spray nozzles disposed on the outer tub cover. Wherein, the water inlet pump mouth of circulating pump and the inner chamber intercommunication of outer bucket, the water outlet pump mouth and a plurality of nozzle of circulating pump communicate respectively. The extending direction of the jet orifice of each nozzle is different from the included angle of the horizontal direction. When the circulating pump works, the washing water sprayed from the nozzles can form a height difference on each concentric circle of the inner barrel, and then clothes floating out of the liquid level in the inner barrel are sprayed in a three-dimensional and all-around manner, so that the washing water fully infiltrates the clothes, the spraying effect of the pulsator washing machine is improved, and the washing effect of the pulsator washing machine is optimized.

Description

Impeller washing machine and spraying system and outer barrel cover thereof

Technical Field

The invention belongs to the field of spraying equipment, and particularly provides a pulsator washing machine, a spraying system and an outer barrel cover thereof.

Background

The pulsator washing machine mainly comprises a box body, an outer barrel, an inner barrel and a pulsator. Wherein, the outer barrel is fixedly arranged in the box body, the inner barrel is rotatably arranged in the outer barrel, and the wave wheel is rotatably arranged at the bottom of the outer barrel. When the pulsator washing machine performs washing and rinsing operations, the pulsator drives the washing water and the laundry in the outer tub to rotate, so as to achieve the purpose of washing the laundry. When the rotary drum washing machine performs spin-drying operation, the inner barrel drives the clothes in the inner barrel to rotate at high speed, so that the moisture on the clothes is separated from the clothes under the action of centrifugal force.

The pulsator washing machine often has the following problems in the use process: firstly, washing powder and laundry detergent are deposited at the bottom of an outer barrel and are not easily dissolved by washing water; secondly, when the number of the washed clothes is large, the condition that part of the clothes is not soaked by the washing water is easy to occur; thirdly, the down and other clothes often float above the level of the washing water during washing, and the washing effect is poor.

In order to solve the above problems, the conventional pulsator washing machine generally has a spraying device provided on an outer tub cover. For example, patent document No. CN204282066U discloses a pulsator washing machine, in which a plurality of nozzles are provided on an outer tub cover. When the pulsator washing machine works, the circulating water pump can pump the washing water in the outer barrel to the plurality of nozzles, so that the plurality of nozzles spray the washing water onto the clothes in the inner barrel. However, the pulsator washing machine has a poor spraying effect and cannot spray clothes floating out of the liquid level of the washing water in all directions.

Accordingly, there is a need in the art for a new pulsator washing machine, a spray system thereof, and an outer tub cover to solve the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, namely to solve the problem that the prior pulsator washing machine with a spraying function has poor effect when spraying clothes, the invention provides a spraying system of the pulsator washing machine, the pulsator washing machine comprises a box body, an outer barrel fixedly arranged in the box body and an inner barrel rotatably arranged in the outer barrel, the spraying system comprises a water supply device and a plurality of groups of nozzles, each group of nozzles comprises one or more nozzles with the extending directions of spray openings identical to each other, each nozzle is arranged at the top of the outer barrel, the water inlet of each nozzle is communicated with the water supply device, the jet orifice of each nozzle points to the inner barrel, the extending direction of the jet orifice of each group of nozzles has different included angles with the horizontal direction, so that a height difference can be formed in a circumferential direction of the inner tub after the washing water is sprayed by the plurality of sets of nozzles.

In the preferable technical scheme of the spraying system, the nozzle comprises a nozzle body and a water retaining structure fixedly connected with or integrally manufactured with the nozzle body, the jet orifice is formed between the nozzle body and the water retaining structure, and the included angles between the water retaining structure of each group of nozzles and the horizontal direction are different.

In a preferred embodiment of the above spraying system, an arc-shaped recess is formed in a side of the water blocking structure facing the nozzle body, and the recess is used for scattering and reflecting the washing water sprayed from the nozzle body into the inner tub.

In a preferred technical solution of the above spraying system, the pulsator washing machine further comprises an outer tub cover disposed on the top of the outer tub, and each of the nozzles is fixedly connected to or integrally formed with the outer tub cover.

In a preferred embodiment of the spraying system, all the nozzles are arranged at equal intervals along the circumferential direction of the outer tub.

In a preferred technical solution of the above spraying system, the spraying system further includes an annular cavity provided on the outer tub cover, and the annular cavity is communicated with the water supply device and each of the nozzles, respectively.

In the preferable technical scheme of the spraying system, the water supply device is a circulating pump, a water inlet pump port of the circulating pump is communicated with an inner cavity of the outer barrel, and a water outlet pump port of the circulating pump is communicated with the annular cavity; or the water supply device is a water inlet valve, a water inlet valve port of the water inlet valve is communicated with the outside, and a water outlet valve port of the water inlet valve is communicated with the annular cavity.

The outer barrel cover comprises a cover body and a plurality of groups of nozzles fixedly connected with or integrally manufactured with the cover body, each group of nozzles comprises one or more nozzles, the jet orifice of each nozzle points to the inner barrel of the pulsator washing machine, and the extension direction of the jet orifice of each group of nozzles is different from the horizontal direction so as to form a height difference in the circumferential direction of the inner barrel after washing water is sprayed out by the plurality of groups of nozzles.

In the preferable technical scheme of the outer barrel cover, all the nozzles are arranged at equal intervals along the circumferential direction of the outer barrel cover; and/or the cover body is provided with an annular cavity communicated with each nozzle; and/or a shielding structure for shielding the nozzle is arranged on the cover body.

In addition, the invention also provides a pulsator washing machine which comprises the spraying system in any one of the preferred embodiments.

The technical scheme of the invention includes that a plurality of groups of nozzles are arranged on the top of an outer barrel, and included angles between the extension direction of a jet orifice of each group of nozzles and the horizontal direction are different, so that washing water sprayed by the plurality of groups of nozzles can form a height difference in the circumferential direction of an inner barrel, and further the washing water sprayed by the plurality of groups of nozzles can spray clothes floating out of the liquid level of the washing water in a three-dimensional and all-around manner, so that the washing water can fully infiltrate the clothes, the spraying effect of the pulsator washing machine is improved, and the washing effect of the pulsator washing machine is optimized.

Further preferably, the spray ports of each of the nozzles extend at different angles from the horizontal direction so that the washing water sprayed from each of the nozzles is located at different heights when passing through the axis of the inner tub. Therefore, the combination of the plurality of nozzles can form a height difference of the sprayed washing water on each concentric circle of the inner barrel, and further, the clothes floating out of the liquid surface in the inner barrel are sprayed in a three-dimensional mode.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a top view of a pulsator washing machine of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

fig. 3 is a side view of the outer tub cover of the present invention;

fig. 4 is a top plan view of the outer tub cover of the present invention;

fig. 5 is a bottom view of the outer tub cover of the present invention;

FIG. 6 is a sectional view taken in the direction B1-B1 in FIG. 4 (first embodiment);

FIG. 7 is a sectional view taken in the direction B2-B2 in FIG. 4 (first embodiment);

FIG. 8 is a first side view of the nozzle of the present invention (first embodiment);

FIG. 9 is a second side view of the nozzle of the present invention (first embodiment);

FIG. 10 is a front view of the nozzle of the present invention (first embodiment);

FIG. 11 is a sectional view taken along the direction C-C in FIG. 10 (first embodiment);

FIG. 12 is a first schematic view of the spraying effect of the nozzle in the first embodiment of the present invention;

FIG. 13 is a second schematic view of the spraying effect of the nozzles in the first embodiment of the present invention;

FIG. 14 is a sectional view taken in the direction B1-B1 in FIG. 4 (second embodiment);

FIG. 15a is a cross-sectional view of the first nozzle taken along the direction C-C in FIG. 10 (second embodiment);

fig. 15b is a sectional view of the second nozzle in the direction C-C in fig. 10 (the first embodiment).

List of reference numerals:

1. a box body; 11. a tray seat; 12. a door cover; 2. an outer tub; 21. an outer barrel cover; 211. a cover body; 2111. a shielding structure; 212. an annular cavity; 213. a water inlet; 3. an inner barrel; 4. an impeller; 5. a drive motor; 6. a drain valve; 7. a drain pipe; 8. a circulation pump; 9. a circulating water pipe; 10. a nozzle; 101. a nozzle body; 1011. a water spray channel; 102. a water retaining structure; 1021. a recess.

Detailed Description

It should be understood by those skilled in the art that the embodiments of the present invention are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the components in the drawings are illustrated in a certain proportional relationship, the proportional relationship is not constant, and those skilled in the art can make modifications as required to adapt to specific applications, and the modified embodiments will still fall within the scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, the pulsator washing machine of the present invention mainly includes a cabinet 1, an outer tub 2, an inner tub 3, a pulsator 4, a driving motor 5, a drain valve 6, and a drain pipe 7. Wherein, the outer barrel 2 is fixedly arranged inside the box body 1, the inner barrel 3 is rotatably arranged in the outer barrel 2, and the wave wheel 4 is rotatably arranged at the bottom of the inner barrel 3. The driving motor 5 is fixedly installed on the box body 1 or the outer tub 2, and the driving motor 5 is respectively connected with the inner tub 3 and the pulsator 4 in a driving manner through a rotating shaft. The driving motor 5 can selectively drive the inner tube 3 and the impeller 4 to rotate. Since the technical means of the driving motor 5 selectively driving the inner tube 3 and the pulsator 4 is well known to those skilled in the art, it will not be described herein too much. Further, a water inlet valve port of the drain valve 6 is communicated with an inner cavity of the outer barrel 2 through a water pipe, and a water outlet valve port of the drain valve 6 is communicated to the outside of the box body 1 through a drain pipe 7. When the washing water in the outer tub 2 needs to be drained, the drain valve 6 is opened and the washing water is drained to the outside through the drain pipe 7.

Preferably, a drain opening of the outer tub 2 communicating with the drain valve 6 is located at the bottom of the outer tub 2 so that the washing water in the outer tub 2 can be flushed through the drain opening. It is further preferable that the drain valve 6 is mounted to an inner wall of the cabinet 1, or a person skilled in the art may mount the drain valve 6 to an outer wall of the outer tub 2 as needed. In addition, a person skilled in the art can omit a water pipe between the drain valve 6 and the outer tub 2 as required, so that the drain valve 6 is directly mounted on the outer tub 2 and is communicated with the inner cavity of the outer tub 2.

As shown in fig. 2, a tray 11 is installed on the top of the cabinet 1 of the present invention, and a door 12 is pivotally connected to the tray 11. An outer barrel cover 21 is arranged at the top of the outer barrel 2, and the outer barrel cover 21 is used for shielding the upper edge of the inner barrel 3 and preventing clothes from entering an interlayer between the outer barrel 2 and the inner barrel 3.

As shown in fig. 3 to 6, the outer tub cover 21 mainly includes a cover 211, an annular cavity 212, and a water inlet 213, wherein the annular cavity 212 and the water inlet 213 are both disposed on the cover 211. It will be understood by those skilled in the art that the cover 211 may be an integral structure or may be assembled from multiple separate structures. Illustratively, the cover 211 includes an upper cover and a lower cover, at least one of which is provided with an annular groove. When the upper and lower covers are mounted together, the upper and lower covers enclose the annular channel to form the annular cavity 212.

As shown in fig. 2, 5 and 6, the pulsator washing machine of the present invention further includes a spray system including a circulation pump 8, a circulation water pipe 9, an annular chamber 212, a water inlet 213 and a plurality of nozzles 10.

As shown in fig. 2, the water inlet pump port of the circulating pump 8 is communicated with the inner cavity of the outer tub 2 through a water pipe, and the water outlet pump port of the circulating pump 8 is communicated with the water inlet 213 on the outer tub cover 21 through a circulating water pipe 9. Preferably, a water outlet of the outer tub 2 communicating with the circulation pump 8 is located at the bottom of the outer tub 2. It is further preferable that the circulation pump 8 is mounted to an inner wall of the cabinet 1, or a person skilled in the art may mount the circulation pump 8 to an outer wall of the outer tub 2 as needed. In addition, a person skilled in the art can omit a water pipe between the circulating pump 8 and the outer tub 2 as required, so that the circulating pump 8 is directly mounted on the outer tub 2 and is communicated with the inner cavity of the outer tub 2.

As shown in fig. 5 and 6, a plurality of nozzles 10 are fixedly coupled or integrally formed to the cover body 211 at equal intervals in the circumferential direction of the outer tub cover 21, and each nozzle 10 communicates with the annular chamber 212, respectively. Further, the injection port of each nozzle 10 is directed toward the inner tub 3. Further, a person skilled in the art may dispose the plurality of nozzles 10 on the cover 211 at unequal intervals as needed.

As shown in fig. 6 and 7, in the first embodiment of the present invention, each of the nozzles 10 is the same, and the extending direction of the ejection opening of each of the nozzles 10 is different from the angle of the horizontal direction (or the vertical direction). Illustratively, the nozzle 10, on the left in fig. 6, has a nozzle body 101 (as shown in fig. 8) whose axis is at an angle of 90 ° to the vertical; in the right nozzle 10 of fig. 6, the axis of the nozzle body 101 (shown in fig. 8) forms an angle of 98 ° with the vertical direction; as shown in the right nozzle 10 of fig. 7, the axis of the nozzle body 101 (shown in fig. 8) is at an angle of 76 ° to the vertical.

It can be understood by those skilled in the art that, based on the difference in the angle of each nozzle 10 from the horizontal direction (or the vertical direction), a height difference is formed in the circumferential direction of the inner tub 3 after the washing water is sprayed from the nozzles 10 (as shown in fig. 6 and 7), and the washing water sprayed from each nozzle 10 passes through the axis of the inner tub 3 at different heights from each other. Therefore, the sprayed washing water can spray the clothes floating above the water level of the washing water in the inner tub 3 in a three-dimensional and all-around manner, especially when the clothes rotate along with the rotation of the pulsator 4.

Further, the skilled person may also divide the plurality of nozzles 10 into a plurality of groups, each group including at least two nozzles 10, as required. All the nozzles 10 in each set of nozzles 10 are angled at the same angle to the horizontal (or vertical). It will be understood by those skilled in the art that the plurality of nozzles 10 in the same group may be arranged adjacent to each other or spaced apart from each other, and that the number of nozzles 10 in each group may be the same or different.

With continued reference to fig. 5 and 6, the inside of the lid 211 of the outer tub cover 21 is further provided with an annular shielding structure 2111, and the shielding structure 2111 is used for shielding the nozzle 10 from the user so as to optimize the appearance of the outer tub cover 21.

Although not shown in the drawings, in another possible embodiment of the present invention, a person skilled in the art may fix a plurality of nozzles 10 directly to the top of the outer tub 2 and then make the circulation water pipe 9 communicate with each nozzle 10 directly or via other water pipes, as needed.

As shown in fig. 2, when the circulation pump 8 is operated, the washing water in the outer tub 2 can be sucked out and pumped into the annular cavity 212 of the outer tub cover 21 through the circulation water pipe 9, so that the nozzle 10 sprays the washing water into the inner tub 3 to spray the clothes in the inner tub 3.

In addition, although not shown in the drawings, in another possible embodiment of the spraying system of the present invention, a person skilled in the art may also connect the water inlet 213 of the outer tub cover 21 with the water inlet valve of the pulsator washing machine through a water pipe as needed. When the inlet valve port of the inlet valve is connected to the water tap, the tap water can be supplied to the annular chamber 212 along the path of the inlet valve, the water pipe and the inlet 213, thereby allowing the nozzle 10 to spray the tap water onto the laundry in the inner tub 3 to wet the laundry.

Further, one skilled in the art can also use the spraying system of the present invention to have the above-mentioned circulation pump 8, circulation water pipe 9, water inlet valve and water pipe connecting the water inlet valve and the water inlet 213, and connect a stop valve in series between the water inlet valve and the water inlet 213, as required. At this time, the circulation pump 8 and the water inlet valve may be separately or collectively used as water supply means. When the tap water is required to spray the laundry, the water inlet valve and the shutoff valve are opened. The circulation pump 8 is operated when it is required that the washing water in the outer tub 2 is sprayed to the laundry.

The nozzle 10 of the present invention will be described in detail with reference to fig. 8 to 13.

As shown in fig. 8 to 11, the nozzle 10 includes a nozzle body 101 and a water guard structure 102. The nozzle body 101 and the water stop structure 102 may be secured together by any suitable connection, such as welding, fusing, bonding, etc. Alternatively, the nozzle body 101 and the water blocking structure 102 may be integrally formed as needed by those skilled in the art.

As shown in fig. 9 and 11, the nozzle body 101 is provided with an injection passage 1011 therein. The lower end of the spray channel 1011 in figure 10 communicates with the annular chamber 212 when the nozzle 10 is mounted to the outer tub cover 21. The washing water in the annular chamber 212 is sprayed from the upper end of the spray channel 1011 in fig. 10 toward the water guard structure 102 after passing through the spray channel 1011, and the water guard structure 102 scatters and reflects the washing water into the inner tub 3. Those skilled in the art will appreciate that the nozzle body 101 may be any feasible shape, such as a circular string configuration, a square string configuration, a tapered string configuration, and the like.

As shown in fig. 8 to 11, the water blocking structure 102 blocks the injection passage 1011 in the axial direction of the nozzle body 101. The water guard structure 102 is provided with a recess 1021 on a side facing the nozzle body 101. Preferably, the recess 1021 is a recess having an arc-shaped surface, i.e. the inner surface of the recess 1021 is an arc-shaped face. Further preferably, the water guard structure 102 is a scoop-shaped structure as a whole. Furthermore, the water retaining structure 102 may be configured in any other feasible structure, such as a plate structure with a concave surface or a block structure with a concave surface, as required by those skilled in the art.

As shown in fig. 10, the washing water is jetted into the recess 1021 in a bundle shape after being jetted from the jet passage 1011. The washing water dropped into the recess 1021 spreads along the arc of the recess 1021 from the landing point, and finally flows out from the edge of the recess 1021 to form a fan-shaped waterfall-like water flow (as shown in fig. 12 and 13) to drop into the inner tub 3.

It can be understood by those skilled in the art that the shape of the washing water spouting can be adjusted by changing the angle of the arc-shaped concave surface in the concave portion 1021. The concave surface of the concave portion 1021 is a uniform spherical surface as shown in fig. 12; the concave surface of the recess 1021 is a bilaterally symmetrical non-uniform arc surface as shown in fig. 13, and the concave surface is tightened toward the symmetry axis so that the washing water is concentrated and sprayed as far as possible.

It can be understood by those skilled in the art that the recess 1021 may have any feasible shape, such as a U-shaped recess or a flared recess, in addition to the arc shape, on the premise that the washing water sprayed from the spray passage 1011 can be scattered.

As shown in fig. 14, in the second embodiment of the present invention, the nozzle body 101 of each nozzle 10 is parallel to the horizontal direction, and the extending direction of the ejection opening of each nozzle 10 is different from the angle of the horizontal direction (or the vertical direction). Exemplarily, the nozzle 10 on the left side in fig. 6 has an angle of 34 ° between the extending direction of the jet port (i.e., the direction of the washing water jetting direction) and the vertical direction; as shown in fig. 6, the right nozzle 10 has an angle of 57 ° between the extending direction of the spray opening (i.e., the direction of the washing water spray) and the vertical direction.

In the second embodiment, the included angle between the water blocking structure 102 of each nozzle 10 and the horizontal direction (or the vertical direction) is different, so that the included angle between the extending direction of the ejection opening of each nozzle 10 and the horizontal direction (or the vertical direction) is different on the premise that the nozzle body 101 of each nozzle 10 is horizontally arranged. Exemplarily, the water blocking structure 102 of the nozzle 10 shown in fig. 15a is at an angle a from the horizontal direction in fig. 15a, and the water blocking structure 102 of the nozzle 10 shown in fig. 15b is at an angle b from the horizontal direction in fig. 15 b. Wherein a < b.

Further, the skilled person may also divide the plurality of nozzles 10 into a plurality of groups, each group including at least two nozzles 10, as required. Each nozzle 10 in the same set is identical in structure. It will be understood by those skilled in the art that the plurality of nozzles 10 in the same group may be arranged adjacent to each other or spaced apart from each other, and that the number of nozzles 10 in each group may be the same or different.

As described above, in the preferred embodiment of the present invention, the recess 1021 is formed at the side of the water blocking structure 102 facing the nozzle body 101, so that the bunch-shaped washing water sprayed from the spraying channel 1011 can be uniformly dispersed by the recess 1021 and flow into the inner tub 3, and the laundry in the inner tub 3 can be uniformly sprayed. Therefore, the nozzle 10 of the present invention can improve the spraying effect of the pulsator washing machine on the clothes in the inner tub 3, thereby optimizing the washing effect of the pulsator washing machine on the clothes.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. A spraying system of a pulsator washing machine, the pulsator washing machine comprises a box body, an outer barrel fixedly arranged in the box body and an inner barrel rotatably arranged in the outer barrel,

it is characterized in that the spraying system comprises a water supply device and a plurality of groups of nozzles,

each of the sets of nozzles includes one or more nozzles having ejection ports extending in the same direction as each other,

each of the nozzles is disposed at the top of the outer tub, and a water inlet of each of the nozzles is communicated with the water supply device, and a spray port of each of the nozzles is directed toward the inner tub,

the extending direction of the jet orifice of each group of the nozzles is different from the included angle of the horizontal direction, so that the washing water can form a height difference in the circumferential direction of the inner barrel after being sprayed by the plurality of groups of the nozzles.

2. The spray system of claim 1, wherein the nozzles comprise a nozzle body and a water retaining structure fixedly connected to or integrally formed with the nozzle body, the spray ports are formed between the nozzle body and the water retaining structure, and the included angle of the water retaining structure of each group of nozzles with the horizontal direction is different.

3. The spraying system of claim 2, wherein a side of the water blocking structure facing the nozzle body is provided with an arc-shaped recess for scattering and reflecting the washing water sprayed from the nozzle body into the inner tub.

4. The spraying system of claim 3, wherein the pulsator washing machine further comprises an outer tub cover provided on the top of the outer tub, and each of the nozzles is fixedly connected to or integrally formed with the outer tub cover.

5. The spraying system of claim 4 wherein all of said nozzles are equally spaced circumferentially of said outer tub.

6. The spray system of claim 5, further comprising an annular chamber disposed on said outer barrel cover, said annular chamber being in communication with said water supply and each of said spray nozzles, respectively.

7. The spraying system of claim 6, wherein the water supply device is a circulating pump, a water inlet pump port of the circulating pump is communicated with the inner cavity of the outer barrel, and a water outlet pump port of the circulating pump is communicated with the annular cavity;

or the water supply device is a water inlet valve, a water inlet valve port of the water inlet valve is communicated with the outside, and a water outlet valve port of the water inlet valve is communicated with the annular cavity.

8. An outer barrel cover of a pulsator washing machine is characterized in that the outer barrel cover comprises a cover body and a plurality of groups of nozzles fixedly connected with or integrally manufactured with the cover body,

each group of the nozzles comprises one or more nozzles with jet ports extending in the same direction, the jet ports of each nozzle point to an inner barrel of the pulsator washing machine,

9. An outer barrel cover according to claim 8, wherein all of the nozzles are equally spaced circumferentially of the outer barrel cover; and/or an annular cavity is provided in the cover body in communication with each of the nozzles.

10. Pulsator washing machine, characterized in that it comprises a spraying system as claimed in any one of claims 1 to 7.