CN110878464A - Impeller washing machine and spraying system and outer barrel cover thereof - Google Patents

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. Therefore, the spraying system comprises a circulating pump, a plurality of nozzles arranged on the outer barrel cover and a plurality of water retaining structures. 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. Each nozzle corresponds to a water retaining structure, and one side of each water retaining structure facing the nozzle is obliquely arranged along the circumferential direction of the outer barrel. When the circulating pump works, the washing water sprayed by the spray nozzle can be scattered by the water retaining structure and obliquely reflected into the inner barrel along the circumferential direction of the inner barrel, and 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, that is, to solve the problem of poor effect when the existing pulsator washing machine with a spraying function sprays clothes, the present invention provides a spraying system of a pulsator washing machine, wherein 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, a plurality of nozzles and a plurality of water retaining structures, the nozzles and the water retaining structures are all arranged on the top of the outer barrel, one end of each nozzle is respectively communicated with the water supply device, and the other end of each nozzle is respectively directed to one water retaining structure; one side of the water retaining structure facing the nozzle is obliquely arranged along the circumferential direction of the outer barrel; when the washing machine works, the water supply device supplies washing water to the plurality of nozzles, the nozzles spray the washing water to the water retaining structure, and the water retaining structure breaks up and reflects the washing water into the inner barrel.

In a preferred embodiment of the above spraying system, a recess is formed at a side of the water blocking structure facing the nozzle, and the water blocking structure breaks up and reflects the washing water into the inner tub through the recess.

In a preferred embodiment of the above spraying system, the recess is a recess having an arc-shaped surface; and/or the end face of one end of the nozzle, which is close to the water retaining structure, is arranged in parallel with one side of the water retaining structure.

In a preferred technical scheme of the spraying system, the pulsator washing machine further comprises an outer barrel cover arranged at the top of the outer barrel, and the plurality of nozzles and the plurality of water retaining structures are respectively fixedly connected with or integrally manufactured with the outer barrel cover.

In the preferable technical scheme of the spraying system, an annular cavity is arranged on the outer barrel cover, and the annular cavity is respectively communicated with the water supply device and the plurality of nozzles; and/or the nozzles are arranged at equal intervals along the circumferential direction of the outer barrel.

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 a water source, and a water outlet valve port of the water inlet valve is communicated with the annular cavity.

In another aspect, the present invention further provides an outer tub cover, wherein the outer tub cover comprises a cover body, a plurality of nozzles and a plurality of water retaining structures, the nozzles and the water retaining structures are fixedly connected with or integrally formed with the cover body, one end of each nozzle is respectively communicated with a water source, and the other end of each nozzle is respectively directed to one of the water retaining structures; one side of the water retaining structure facing the nozzle is obliquely arranged along the circumferential direction of the cover body, so that the water retaining structure can scatter and reflect the washing water sprayed by the nozzle into a target object.

In a preferred embodiment of the outer tub cover, a concave portion is formed on a side of the water blocking structure facing the nozzle, and the water blocking structure breaks up and reflects the washing water into the target object through the concave portion.

In a preferred embodiment of the above outer tub cover, the concave portion is a concave portion having an arc-shaped surface; and/or the end surface of one end of the nozzle close to the water retaining structure is arranged in parallel with one side of the water retaining structure; and/or the nozzles are arranged at equal intervals along the circumferential direction of the cover body.

In a further aspect, the invention further provides a pulsator washing machine, which comprises the spraying system of any one of the above preferred embodiments.

As can be appreciated by those skilled in the art, in a preferred embodiment of the present invention, the plurality of nozzles and the plurality of water blocking structures are disposed at the top of the outer tub, and one end of each nozzle is directed to one water blocking structure, respectively, so that the water blocking structures can scatter and reflect the washing water into the inner tub. The water retaining structure is obliquely arranged along the circumferential direction of the outer barrel towards one side of the nozzle, so that the washing water reflected by the water retaining structure can be obliquely sprayed into the inner barrel along the radial direction of the inner barrel and can also be obliquely sprayed into the inner barrel along the circumferential direction of the inner barrel, the washing water forms a height difference in the circumferential direction of the inner barrel, and further the washing water sprayed by the plurality of nozzles can be sprayed to clothes floating out of the liquid level of the washing water in a three-dimensional and all-dimensional 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.

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 an outer tub cover according to a first embodiment of the present invention;

fig. 4 is a bottom view of the outer tub cover in the first embodiment of the present invention;

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

FIG. 6 is an enlarged view of portion B of FIG. 4 (first embodiment);

FIG. 7 is a sectional view taken along the direction C-C in FIG. 5 (first embodiment);

fig. 8 is an enlarged view of a portion D in fig. 7 (first embodiment);

FIG. 9 is a schematic diagram showing the spraying effect of the nozzles in the first embodiment of the present invention;

FIG. 10 is a sectional view taken along the direction C-C in FIG. 5 (second embodiment);

fig. 11 is an enlarged view of a portion E in fig. 10 (second embodiment);

FIG. 12 is a schematic structural view of a nozzle in a second embodiment of the present invention;

fig. 13 is a bottom view of a tub cover according to a third embodiment of the present invention;

fig. 14 is an enlarged view of portion F in fig. 13 (third embodiment);

fig. 15 is a partial sectional view of a tub cover according to a third embodiment of the present invention.

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; 10a, a nozzle; 10b, a water retaining structure; 10b1, 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, the pulsator washing machine of the present invention may have an outer tub cover or no outer tub cover. Those skilled in the art can make modifications as needed to suit a particular application, and such 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 tub 2 is fixedly disposed inside the cabinet 1, the inner tub 3 is rotatably disposed in the outer tub 2, and the pulsator 4 is rotatably disposed at the bottom of the inner tub 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 5 and 7, 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, 4 and 7, the pulsator washing machine of the present invention further includes a spraying system including a circulation pump 8, a circulation water pipe 9, an annular chamber 212, a water inlet 213, a plurality of nozzles 10a, and a plurality of water blocking structures 10 b.

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. 6 to 8, in the first embodiment of the present invention, each nozzle 10a corresponds to one water blocking structure 10b, and each nozzle 10a and the corresponding water blocking structure 10b are fixedly connected or integrally formed. It will be appreciated by those skilled in the art that the means of secure attachment may be any feasible means, such as welding, fusing, bonding, etc. Further, injection ports (not shown) are formed between the nozzle 10a and the water guard structure 10b, each of which is directed toward the inner tub 3.

As shown in fig. 8, the right end surface of the nozzle 10a is disposed in parallel with the left end surface of the water blocking structure 10b so that the washing water sprayed from the spray opening forms a fan-shaped waterfall shape. Alternatively, the two end faces of the nozzle 10a and the water guard structure 10b adjacent to each other may be made non-parallel as required by those skilled in the art.

Although not shown in the drawings, those skilled in the art may arrange the portion or each of the plurality of water blocking structures 10b facing the nozzle 10a (the left side of the water blocking structure 10b in fig. 8) to be inclined along the circumferential direction of the cover 211 (or the tub 2) as needed, and exemplarily, the side of the water blocking structure 10b facing the nozzle 10a in fig. 6 (the lower side of the water blocking structure 10b in fig. 6) to be inclined along the left-right direction in fig. 6, that is, the left side of the water blocking structure 10b is lower than the right side in fig. 6; and the side of the water blocking structure 10b facing the nozzle 10a in fig. 6 is also obliquely arranged in the up-down direction in fig. 6. The water blocking structure 10b not only scatters the washing water sprayed from the nozzles 10a and reflects the washing water into the inner tub 3, but also sprays the washing water into the inner tub 3 obliquely (as shown in fig. 9) along the circumferential direction of the inner tub 3 to form a height difference (as shown in fig. 2) in the circumferential direction of the inner tub 3, so that the washing water sprayed from the nozzles 10a can spray the laundry floating on the surface of the washing water in a three-dimensional and all-directional manner, and the washing water can sufficiently soak the laundry, especially when the laundry rotates with the rotation of the pulsator 4.

As shown in fig. 3 and 4, a plurality of nozzles 10a 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 10a communicates with the annular chamber 212, respectively. Further, the injection port of each nozzle 10a is directed toward the inner tub 3. Further, a person skilled in the art may dispose the plurality of nozzles 10a on the cover 211 at unequal intervals as necessary.

As shown in fig. 6 to 8, the inner side of the cover body 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 10a and the water blocking structure 10b, preventing the nozzle 10a and the water blocking structure 10b from being observed by a 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 the plurality of nozzles 10a and the plurality of water blocking structures 10b directly to the top of the outer tub 2 and then communicate the circulation water pipe 9 with each of the nozzles 10a directly or via other water pipes, as needed.

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 causing the nozzle 10a 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.

As shown in fig. 10 to 12, in the second embodiment of the present invention, unlike the first embodiment, the water blocking structure 10b is provided with a recess 10b1 on the side facing the nozzle 10 a. Preferably, the recess 10b1 is a recess having an arc-shaped surface, i.e., the inner surface of the recess 10b1 is an arc-shaped face. Further preferably, the water retaining structure 10b is a scoop-shaped structure as a whole. Furthermore, the water retaining structure 10b 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 will be understood by those skilled in the art, the washing water is jetted in a bundle shape into the recess 10b1 after being jetted from the nozzle 10 a. The washing water dropped into the recess 10b1 spreads along the arc of the recess 10b1 from the landing point and finally flows out from the edge of the recess 10b1 to form a fan-shaped waterfall-like current (as shown in fig. 2 and 9) and drops into the inner tub 3 obliquely.

Further, those skilled in the art may arrange the annular surface at the upper end of the nozzle 10a in fig. 12 and the annular surface at the lower end (the end where the recess 10b1 is formed) of the water blocking structure 10b in fig. 12 in parallel, as needed, so that the washing water sprayed from the spray opening forms a fan-shaped waterfall shape.

Furthermore, those skilled in the art can also make the water retaining structure 10b in the second embodiment be the same as the water retaining structure 10b in the first embodiment, and be inclined along the circumferential direction of the tub 2 according to the requirement. That is, the distance from the left side edge of the water-stop structure 10b in fig. 12 to the lower end face of the nozzle 10a in fig. 12 is greater or smaller than the distance from the right side edge of the water-stop structure 10b in fig. 12 to the lower end face of the nozzle 10a in fig. 12.

As shown in fig. 13 to 15, in the third embodiment of the present invention, unlike the first and second embodiments, the nozzle 10a and the water blocking structure 10b are separately provided, that is, the nozzle 10a and the water blocking structure 10b are not directly connected in structure and are separated from each other. In order to correspondingly bring the nozzle 10a and the water retaining structure 10b together, the nozzle 10a and the water retaining structure 10b are respectively fixed to or integrated with the cover body 211.

As shown in fig. 14 and 15, in the third embodiment of the present invention, as in the first embodiment, a side of each water blocking structure 10b facing the nozzle 10a (a lower side of the water blocking structure 10b in fig. 14) is obliquely arranged along a circumferential direction of the cover body 211, exemplarily, a side of the water blocking structure 10b facing the nozzle 10a in fig. 15 (a lower side of the water blocking structure 10b in fig. 14) is obliquely arranged along a left-right direction in fig. 14 (an included angle d shown in fig. 14), and a side of the water blocking structure 10b facing the nozzle 10a in fig. 14 and 15 is also obliquely arranged along an up-down direction in fig. 14 and 15. The water blocking structure 10b not only scatters the washing water sprayed from the nozzles 10a and reflects the washing water into the inner tub 3, but also sprays the washing water into the inner tub 3 obliquely (as shown in fig. 9) along the circumferential direction of the inner tub 3 to form a height difference (as shown in fig. 2) in the circumferential direction of the inner tub 3, so that the washing water sprayed from the nozzles 10a can spray the laundry floating on the surface of the washing water in a three-dimensional and all-directional manner, and the washing water can sufficiently soak the laundry, especially when the laundry rotates with the rotation of the pulsator 4.

It should be noted that, regardless of the first, second, or third embodiments, the nozzle 10a may have any feasible structure, such as a circular tube, a tapered tube, an elliptical tube, a polygonal tube, or the like.

It will be appreciated by those skilled in the art that the combination of the nozzles 10a and 10b of the present invention is not limited to the first, second and third embodiments described above, but may be a combination of two or three of the three embodiments, or any other feasible combination.

Based on the above description, it can be understood by those skilled in the art that, in the present invention, one side of the water blocking structure 10b facing the nozzles 10a is obliquely disposed along the circumferential direction of the outer tub 2, so that the washing water reflected by the water blocking structure 10b can be obliquely sprayed into the inner tub 3 not only along the radial direction of the inner tub 3, but also along the circumferential direction of the inner tub 3, so that the washing water forms a height difference in the circumferential direction of the inner tub 3, and further the washing water sprayed by the nozzles 10a can be sprayed to the clothes floating out of the liquid level of the washing water in a three-dimensional and all-directional manner, so that the washing water can fully infiltrate the clothes, thereby improving the spraying effect of the pulsator washing machine and optimizing the washing effect of the pulsator washing machine.

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 (10)

1. A spray system of a pulsator washing machine, the pulsator washing machine comprising a cabinet, an outer tub fixedly disposed in the cabinet, and an inner tub rotatably disposed in the outer tub,

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

the plurality of nozzles and the plurality of water retaining structures are arranged at the top of the outer barrel, one end of each nozzle is communicated with the water supply device, and the other end of each nozzle points to one water retaining structure;

one side of the water retaining structure facing the nozzle is obliquely arranged along the circumferential direction of the outer barrel;

when the washing machine works, the water supply device supplies washing water to the plurality of nozzles, the nozzles spray the washing water to the water retaining structure, and the water retaining structure breaks up and reflects the washing water into the inner barrel.

2. The spraying system of claim 1, wherein a side of the water blocking structure facing the nozzle is formed with a recess through which the water blocking structure breaks up and reflects the washing water into the inner tub.

3. The spray system of claim 2, wherein said recess is a recess having an arcuate surface;

and/or the end face of one end of the nozzle, which is close to the water retaining structure, is arranged in parallel with one side of the water retaining structure.

4. The spraying system of claim 3, wherein the pulsator washing machine further comprises an outer tub cover disposed on the top of the outer tub, and the plurality of nozzles and the plurality of water blocking structures are respectively fixedly connected to or integrally formed with the outer tub cover.

5. The spraying system of claim 4, wherein an annular chamber is provided on the outer tub cover, the annular chamber being in communication with the water supply and the plurality of nozzles, respectively;

and/or the nozzles are arranged at equal intervals along the circumferential direction of the outer barrel.

6. The spraying system of claim 5, 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 a water source, and a water outlet valve port of the water inlet valve is communicated with the annular cavity.

7. An outer barrel cover is characterized in that the outer barrel cover comprises a cover body, a plurality of nozzles and a plurality of water retaining structures,

the nozzles and the water retaining structures are fixedly connected with the cover body or integrally manufactured,

one end of each nozzle is respectively communicated with a water source, and the other end of each nozzle is respectively directed to one water retaining structure;

one side of the water retaining structure facing the nozzle is obliquely arranged along the circumferential direction of the cover body, so that the water retaining structure can scatter and reflect the washing water sprayed by the nozzle into a target object.

8. The outer tub cover according to claim 7, wherein a recess is formed at a side of the water blocking structure facing the nozzle, through which the water blocking structure breaks up and reflects the washing water into the target object.

9. An outer drum cover according to claim 8, wherein the recess is a recess having an arcuate surface;

and/or the end surface of one end of the nozzle close to the water retaining structure is arranged in parallel with one side of the water retaining structure;

and/or the nozzles are arranged at equal intervals along the circumferential direction of the cover body.

10. Pulsator washing machine, characterized in that it comprises a spraying system as claimed in any one of claims 1 to 6.

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