CN220192952U - Spraying device and dish washer - Google Patents

Abstract

The utility model relates to the technical field of dish washers and discloses a spraying device and a dish washer, wherein the spraying device comprises a supporting component, a spraying component and a guiding component, the spraying component comprises a main body and at least one group of telescopic arms, the main body is rotatably arranged on the supporting component, the telescopic arms comprise fixed arms communicated with the main body and sliding arms connected with the fixed arms in a sliding manner, the main body, the fixed arms and the sliding arms are mutually communicated to form a runner, and at least the sliding arms are provided with spraying holes communicated with the runner; the guide assembly comprises a gear disc and a track wheel, the gear disc is arranged on the support assembly, a plurality of gear teeth of the gear disc form a guide track, the track wheel is rotatably arranged on the sliding arm, the track wheel is meshed with the gear disc and moves along the guide track, and part of the structure of the sliding arm is driven to extend out of or retract into the fixed arm. The sliding arm of the spraying device extends out of or retracts back to the fixed arm in the running process, so that the spraying area is increased, the cleaning area is enlarged, and the cleaning effect is improved.

Description

Spraying device and dish washer

Technical Field

The utility model relates to the technical field of dish washers, in particular to a spraying device and a dish washer.

Background

A dishwasher is a device that sprays cold water or hot water to dishes to remove dirt adhered to the dishes to wash the dishes. In the existing dish washer products, the spraying mode of the spraying device is rotary spraying, and as the length of the spraying arm cannot be changed, the spraying range is limited, and a better cleaning effect cannot be achieved.

Disclosure of Invention

The utility model aims to provide a spraying device and a dish washing machine, and solves the technical problems that the length of a spraying arm of the existing dish washing machine cannot be changed, the spraying range is limited, and a good cleaning effect cannot be achieved.

To achieve the purpose, the utility model adopts the following technical scheme:

the embodiment provides a spray device, including:

a support assembly;

the spraying assembly comprises a main body and at least one group of telescopic arms, the main body is rotatably arranged on the supporting assembly, the telescopic arms comprise fixed arms communicated with the main body and sliding arms connected with the fixed arms in a sliding manner, the main body, the fixed arms and the sliding arms are mutually communicated to form a runner, and at least the sliding arms are provided with spraying holes communicated with the runner; a kind of electronic device with high-pressure air-conditioning system

The guide assembly comprises a gear disc and a track wheel, the gear disc is installed on the support assembly, a plurality of gear teeth of the gear disc form a guide track, the track wheel is rotatably installed on the sliding arm, the track wheel is meshed with the gear disc and moves along the guide track, so that a part of the structure of the sliding arm is driven to extend out of or retract back into the fixed arm.

The spraying device is meshed with the track wheel through the gear disc of the guide assembly so as to drive the sliding arm to move along the guide track, and part of the structure of the sliding arm stretches out of or retracts into the fixed arm in the moving process, so that the spraying area is increased, the cleaning area is enlarged, and the cleaning effect is improved.

As a preferable scheme of the spraying device, the gear plate is an external gear plate, and the track wheel is externally meshed with the external gear plate;

a first elastic reset piece is arranged between the track wheel and the supporting component and used for driving the sliding arm to retract in the fixed arm.

The external gear plate is externally meshed with the track wheel so as to drive the sliding arm to move along the guiding track, and the operation is stable; the first elastic reset piece is used for driving the sliding arm to retract into the fixed arm and preventing the track wheel from being separated from the external gear disc.

As a preferable scheme of the spraying device, the gear plate is an internal gear plate, and the track wheel is internally meshed with the internal gear plate.

The track wheel is internally meshed with the internal gear disk, so that the sliding arm can move along the track in the direction; and the internal gear plate is internally meshed with the track wheel, so that the occupied space is reduced.

As a preferable mode of the spraying device, a second elastic reset piece is arranged between the track wheel and the supporting component and used for driving the sliding arm to retract into the fixed arm.

The second elastic reset piece is used for driving the sliding arm to retract to the fixed arm.

As a preferable mode of the above spraying device, the track wheel includes:

the connecting part is rotationally connected with one end of the sliding arm; a kind of electronic device with high-pressure air-conditioning system

The gear is connected to the other end of the connecting part, and the track wheel is meshed with the gear disc.

The track wheel is convenient for realizing the installation of the gear through the connecting part.

As a preferable mode of the above spray device, the slide arm includes:

the sliding main body is provided with a plurality of spraying holes; a kind of electronic device with high-pressure air-conditioning system

And one end of the movable part is connected with the sliding main body, and the other end of the movable part is connected with the fixed arm in a sliding manner so as to extend out of or retract into the fixed arm.

The sliding arm is connected with the fixed arm in a sliding manner through the movable part, and liquid is sprayed out through a plurality of spraying holes in the sliding main body so as to clean the top angle of the liner.

As a preferable scheme of the spraying device, a limit groove is formed in one end of the movable part, which is in sliding connection with the fixed arm, a sealing ring is sleeved in the limit groove, and the sealing ring seals a gap between the sliding arm and the fixed arm.

The sealing ring is arranged to seal the gap between the sliding arm and the fixed arm, so that water leakage is avoided.

As a preferable mode of the spraying device, the spraying assembly further comprises:

the spray arms are arranged on the main body and are communicated with the main body, and a plurality of spray holes are formed in the spray arms.

The arrangement of the spray arm can enhance the spray effect and improve the cleaning effect.

As a preferable scheme of the spraying device, the included angles between any two adjacent groups of the spraying arms and the telescopic arms are equal.

The arrangement can enable the spraying assembly to be stable in the rotation process.

The embodiment also provides a dish washer, which comprises the spraying device.

The dish washer has the advantages that the spraying area is increased through the spraying device, the cleaning area is enlarged, and the cleaning effect is improved.

The utility model has the beneficial effects that:

according to the spraying device provided by the utility model, the gear disc and the track wheel of the guide assembly are meshed with each other to drive the sliding arm to move along the guide track, and part of the structure of the sliding arm extends out of or retracts into the fixed arm in the moving process, so that the spraying area is increased, the cleaning area is enlarged, and the cleaning effect is improved.

According to the dish washer provided by the utility model, the spraying area is increased through the spraying device, the cleaning area is enlarged, and the cleaning effect is improved.

Drawings

Fig. 1 is a schematic view of a dishwasher according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a spraying device according to a first embodiment of the present utility model;

fig. 3 is a schematic structural view of a telescopic arm of a spraying device according to a first embodiment of the present utility model in an extended state;

fig. 4 is a schematic diagram of a first structure to be assembled of a spraying device according to a first embodiment of the present utility model;

fig. 5 is a schematic diagram of a second structure to be assembled of the spraying device according to the first embodiment of the present utility model;

FIG. 6 is an exploded view of a sprinkler system according to a first embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a spray device provided in accordance with a first embodiment of the present utility model;

FIG. 8 is an enlarged partial schematic view at A in FIG. 7;

FIG. 9 is a schematic view of a sprinkler in different states according to a first embodiment of the present utility model;

FIG. 10 is a schematic view of a sprinkler including a set of telescopic arms according to a first embodiment of the present utility model;

FIG. 11 is a schematic view of a spray device according to a first embodiment of the present utility model, including two sets of telescopic arms;

fig. 12 is a schematic structural view of a spray device according to a first embodiment of the present utility model, including three telescopic arms;

fig. 13 is a schematic structural view of a spray device according to a first embodiment of the present utility model, including four telescopic arms;

FIG. 14 is a schematic view of a spray device according to a first embodiment of the present utility model, including a set of telescopic arms and a set of spray arms;

FIG. 15 is a schematic view of a spray device according to a first embodiment of the present utility model, including a set of telescopic arms and three sets of spray arms;

fig. 16 is a schematic structural diagram of a spraying device according to a second embodiment of the present utility model;

fig. 17 is a diagram of a spraying device to be assembled according to a second embodiment of the present utility model.

In the figure:

100. a spraying device; 200. A chamber;

1. a support assembly; 11. A convex structure;

2. a spray assembly; 20. spraying holes; 21. a main body; 211. a main body connecting part; 212. a main body communication part; 2111. a clamping part;

22. a telescoping arm; 221. a fixed arm; 2211. a chute; 222. a sliding arm; 2221. a sliding body; 22211. a clamping hole;

2222. a movable part; 22221. a limit groove; 223. a seal ring; 23. a spray arm;

3. a guide assembly; 31. a gear plate; 32. a track wheel; 321. a connection part; 322. a gear; 33. a first elastic restoring member; 34. and a second elastic restoring member.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Embodiment one:

as shown in fig. 1, the dishwasher includes a chamber 200, a shower device 100 disposed in the chamber 200 and communicating with a water supply device (not shown), and a bowl (not shown) disposed in the chamber 200, wherein the bowl is disposed above the shower device 100, and dishes such as dishes disposed in the bowl are washed by the shower device 100. The inner cavity of the chamber 200 has a square structure in order to increase the spray area of the spray device 100. As shown in fig. 1-9, the present embodiment provides a spraying device 100, which comprises a supporting component 1, a spraying component 2 and a guiding component 3, wherein the supporting component 1 is installed in a chamber 200, the spraying component 2 is rotatably installed on the supporting component 1, the spraying component 2 comprises a main body 21 and at least one group of telescopic arms 22, the main body 21 is rotatably arranged on the supporting component 1, a water inlet is arranged on the main body 21 and is communicated with a water supply device, and water enters the spraying component 2 through the water inlet. The telescopic arm 22 comprises a fixed arm 221 communicated with the main body 21 and a sliding arm 222 connected with the fixed arm 221 in a sliding manner, the main body 21, the fixed arm 221 and the sliding arm 222 are mutually communicated to form a runner, a spray hole 20 communicated with the runner is formed in at least the sliding arm 222, the guide assembly 3 is arranged between the support assembly 1 and the sliding arm 222, the spray assembly 2 rotates under the action of the force of spray water flow, the guide assembly 3 comprises a gear disc 31 and a track wheel 32, the gear disc 31 is arranged on the support assembly 1, a plurality of gear teeth of the gear disc 31 form a guide track, the track wheel 32 is rotatably arranged on the sliding arm 222, the track wheel 32 is meshed with the gear disc 31 and moves along the guide track so as to drive part of the structure of the sliding arm 222 to extend out of or retract into the fixed arm 221, so that the spray area is enlarged, the cleaning area is enlarged, and the cleaning effect is improved.

Specifically, as shown in fig. 4 to 6, the main body 21 includes a main body connection portion 211 and a main body communication portion 212, the main body connection portion 211 is rotatably connected to the support assembly 1, one end of the main body connection portion 211 is provided with a water inlet, the other end is communicated with the main body communication portion 212, and a fixing arm 221 of the telescopic arm 22 is provided on the main body communication portion 212 and is communicated with the main body communication portion 212. The water enters the flow channel from the water inlet and is sprayed out through the spraying holes 20, and the acting force of the water sprayed out of the spraying holes 20 can enable the spraying assembly 2 to rotate relative to the supporting assembly 1.

Further, as shown in fig. 7 and 8, the main body connecting portion 211 has a structure that two ends are penetrated, one end of the main body connecting portion 211 is a water inlet, and the other end of the main body connecting portion 211 is communicated with the main body communicating portion 212. The outer diameter of the body connection part 211 is gradually increased from one end provided with the water inlet to the other end, so that the body connection part 211 is easily installed in the support assembly 1. The main body connecting portion 211 is provided with the clamping portion 2111, the clamping portion 2111 is an annular protrusion arranged on the outer surface of the main body connecting portion 211, the supporting component 1 is provided with a mounting hole, the inner wall of the mounting hole is provided with the clamping convex structure 11, the main body connecting portion 211 stretches into the mounting hole, the clamping portion 2111 is matched with the clamping convex structure 11 in a clamping manner, the main body 21 can be prevented from being separated from the supporting component 1, and the rotation of the main body 21 relative to the supporting component 1 cannot be influenced. The rotational connection between the main body connection portion 211 and the support member 1 is not limited to the above connection method, and may be any connection that can be achieved.

As shown in fig. 7, a sliding groove 2211 is formed in the inner side of the fixed arm 221, the sliding arm 222 is slidably disposed in the sliding groove 2211, the sliding groove 2211 guides the sliding arm 222 to stretch out and draw back from the fixed arm 221 by moving along the sliding groove 2211, so that the telescopic arm 22 can automatically adjust the stretching length according to the square track, and the sliding arm can move along the square track.

Further, as shown in fig. 5 to 7, the sliding arm 222 includes a sliding body 2221 and a movable portion 2222, the sliding body 2221 is provided with a plurality of spray holes 20 at intervals along a length direction thereof, and the number, size and inclination angle of the spray holes 20 may be set according to the need to enhance the washing effect. One end of the movable portion 2222 is connected to the sliding body 2221, and the other end thereof is slidably connected to the slide groove 2211 to extend from or retract into the fixed arm 221. The sliding arm 222 is slidably connected to the fixed arm 221 through the movable portion 2222, and sprays water through the spray holes 20 on the sliding body 2221, so that the top corner position of the chamber 200 can be cleaned, and the cleaning effect is improved.

Optionally, as shown in fig. 5 and 6, a limiting groove 22221 is disposed at one end of the movable portion 2222 slidably connected to the fixed arm 221, a sealing ring 223 is disposed in the limiting groove 22221, the limiting groove 22221 is used for limiting the sealing ring 223, and the sealing ring 223 seals a gap between the sliding arm 222 and the fixed arm 221, so as to prevent water from flowing out from the gap. Preferably, the sealing ring 223 is made of soft material, and the sealing ring 223 can be made of rubber material, so that the sealing ring has certain elasticity and can achieve a good sealing effect.

As shown in fig. 3 to 6, in this embodiment, the gear plate 31 is an external gear plate, a plurality of gear teeth on the external gear plate form a square guiding track, the track wheel 32 is rotatably mounted on the sliding arm 222, and the track wheel 32 is externally meshed with the external gear plate. The track wheel 32 runs along the teeth of the external gear plate, and in the running process, the sliding arm 222 is driven to extend out of or retract into the fixed arm 221, so that a square track (see fig. 1 and 2) is formed, and four vertex angle positions of the inner cavity of the cavity 200 are fully cleaned, so that cleaning dead angles are avoided. Of course, the guide track formed by the plurality of teeth on the external gear plate is not limited to square, and may be regular polygon, ellipse, or the like. In this embodiment, the four vertex angle positions of the square track formed by the sliding arm 222 are in arc transition to form a square circle.

Further, a first elastic restoring member 33 is disposed between the sliding arm 222 and the support assembly 1, and the first elastic restoring member 33 can pull the sliding arm 222 to restore the sliding arm 222; but also avoids the track wheel 32 from disengaging from the external gear plate. In this embodiment, the first elastic restoring member 33 is a spring, one end of which is mounted on the track wheel 32 (but does not affect the rotation of the track wheel 32), and the other end of which is mounted on the support assembly 1.

Further, the track wheel 32 includes a connecting portion 321 and a gear 322, one end of the spring is sleeved on the connecting portion 321, one end of the connecting portion 321 is provided with a chuck, a clamping hole 22211 (see fig. 7) is provided on the sliding main body 2221, the chuck stretches into the clamping hole 22211 and cannot be separated, the connecting portion 321 can rotate relative to the sliding arm 222, the gear 322 is connected to the other end of the connecting portion 321, and the track wheel 32 is meshed with the external gear plate. The track wheel 32 facilitates mounting of the gear 322 via the connection 321 to effect rotation of the gear 322 relative to the slide arm 222.

As shown in fig. 9, the sliding arm 222 has two states of extending from or retracting to the fixed arm 221 in operation, and the track wheel 32 moves to the straight edge of the external gear plate where the sliding arm 222 is in the retracted state. The track wheel 32 travels to the location of the apex of the external gear plate where the slide arm 222 is in an extended state. The extension driving source of the sliding arm 222 is that water flows to drive the spray assembly 2 to rotate, the retraction of the sliding arm 222 is kept by a spring, and the spring always keeps the extension state to pull the telescopic arm 22 to reset.

As shown in fig. 10-13, the spray device 100 may only include a telescopic arm 22, where in fig. 10, a set of telescopic arms 22 is disposed in the spray device 100, and in fig. 11, the spray device 100 includes two sets of telescopic arms 22, where an included angle between the two sets of telescopic arms 22 is 180 ° so as to ensure smooth operation of the spray assembly 2. The sliding arms 222 of each set of telescoping arms 22 are engaged with the external gear plate via a set of track wheels 32. The spray assembly 100 of fig. 12 includes three sets of telescoping arms 22, wherein the included angle between any two adjacent sets of telescoping arms 22 in the three sets of telescoping arms 22 is 120 °. The sliding arms 222 of each set of telescoping arms 22 are engaged with the external gear plate via a set of track wheels 32. The spray assembly 100 of fig. 13 includes four sets of telescoping arms 22, wherein the included angle between any two adjacent sets of telescoping arms 22 in the four sets of telescoping arms 22 is 90 °. The sliding arms 222 of each set of telescoping arms 22 are engaged with the external gear plate via a set of track wheels 32. Of course, the number of the groups of the telescopic arms 22 is not limited to the above-mentioned number of groups, and may further include more groups, for example, five groups, six groups, etc., and the included angles between any two groups of telescopic arms 22 in the plurality of groups of telescopic arms 22 are equal, so as to ensure the stability of the operation of the spray assembly 2.

As shown in fig. 2-5, the spray device 100 further includes at least one set of spray arms 23, the spray arms 23 being in communication with the body 21. The spray arm 23 is provided with a plurality of spray holes 20 arranged along the length direction thereof, water flow is sprayed out through the spray holes 20, and under the action of the water flow, the running track of the spray arm 23 is circular. Preferably, the spray arm 23 is of unitary construction with the body 21.

In this embodiment, the spray device 100 includes a set of telescopic arms 22 and two sets of spray arms 23, the spray arms 23 are communicated with the main body 21, the included angles between any two adjacent telescopic arms 22 and two sets of spray arms 23 are equal, that is, the included angle between every two sets of spray arms is 120 °, a plurality of spray holes 20 are provided on the spray arms 23 along the length direction thereof, the spray arms 23 rotate around the support assembly 1, and the running track is circular.

As shown in fig. 14 and 15, the spray arms 23 are not limited to two groups, and the spray arms 23 may include one group, and as shown in fig. 14, the spray assembly 2 includes a group of telescopic arms 22 and a group of spray arms 23, and an angle between the telescopic arms 22 and the spray arms 23 is 180 degrees. As shown in fig. 15, the spray assembly 2 includes a set of telescoping arms 22 and three sets of spray arms 23, with the angle between any two adjacent sets being 90 °. Of course, in other embodiments, the number of groups of the telescopic arms 22 in the spray assembly 2 is not limited to one group, but may be multiple groups, and the number of groups of the spray arms 23 is not limited to the above example, and the specific number of groups may be set according to the requirement.

Example two

The present embodiment provides a spray device 100, and the spray device 100 of the present embodiment is different from the first embodiment in the structure of the guide assembly 3. In this embodiment, as shown in fig. 16 and 17, the gear disc 31 is an internal gear disc, and a plurality of gear teeth on the internal gear disc form a square guide track; the track wheel 32 is rotatably mounted to the slide arm 222, and the track wheel 32 is internally meshed with the internal gear.

The guide assembly 3 can realize stable transmission, the spray assembly 2 can rotate according to a specific direction under the driving force of water flow, and the track wheel 32 can always rotate next to the internal gear due to the centrifugal force generated during rotation. The gear 322 is internally meshed with the internal gear, so that the occupied space of the guide assembly 3 is reduced, and the dish washer suitable for a small space is facilitated.

Preferably, a second elastic restoring member 34 is provided between the track wheel 32 and the support assembly 1, for driving the sliding arm 222 to restore. The second elastic restoring member 34 has the same structure as the first elastic restoring member 33, and the connection manner is the same, which is not described herein.

In the internal engagement scheme between the internal gear and the track wheel 32, the second elastic restoring member 34 may not be provided, and when the second elastic restoring member 34 is not provided, the shower assembly 2 may rotate in a specific direction under the driving force of the water flow, and the track wheel 32 may always rotate next to the internal gear due to the centrifugal force generated during rotation.

The other structures of this embodiment are the same as those of the first embodiment, and will not be described here again.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Spray set, its characterized in that includes:

a support assembly (1);

the spray assembly (2) comprises a main body (21) and at least one group of telescopic arms (22), wherein the main body (21) is rotatably arranged on the support assembly (1), the telescopic arms (22) comprise fixed arms (221) communicated with the main body (21) and sliding arms (222) connected with the fixed arms (221) in a sliding manner, the main body (21), the fixed arms (221) and the sliding arms (222) are mutually communicated to form a runner, and at least the sliding arms (222) are provided with spray holes (20) communicated with the runner; a kind of electronic device with high-pressure air-conditioning system

The guide assembly (3) comprises a gear disc (31) and a track wheel (32), wherein the gear disc (31) is installed on the support assembly (1), a guide track is formed by a plurality of gear teeth of the gear disc (31), the track wheel (32) is rotatably installed on the sliding arm (222), the track wheel (32) is meshed with the gear disc (31) and moves along the guide track, so that part of the structure of the sliding arm (222) is driven to extend out of or retract back into the fixed arm (221).

2. The spraying device according to claim 1, characterized in that the gear wheel (31) is an external gear wheel, the track wheel (32) being in external engagement with the external gear wheel;

a first elastic reset piece (33) is arranged between the track wheel (32) and the supporting component (1) and used for driving the sliding arm (222) to retract into the fixed arm (221).

3. The spraying device according to claim 1, characterized in that the gear wheel (31) is an internal gear wheel, and the track wheel (32) is internally meshed with the internal gear wheel.

4. A spraying device according to claim 3, characterized in that a second elastic return (34) is provided between the track wheel (32) and the support assembly (1) for driving the sliding arm (222) to retract into the fixed arm (221).

5. The spraying device according to any one of claims 1 to 4, wherein the trajectory wheel (32) comprises:

a connecting part (321), wherein one end of the connecting part (321) is rotationally connected with the sliding arm (222); a kind of electronic device with high-pressure air-conditioning system

And a gear (322), wherein the gear (322) is connected to the other end of the connecting part (321), and the track wheel (32) is meshed with the gear disc (31).

6. The spray device of any one of claims 1-4, wherein the slide arm (222) comprises:

a sliding body (2221), wherein a plurality of spray holes (20) are arranged on the sliding body (2221); a kind of electronic device with high-pressure air-conditioning system

And a movable part (2222), wherein one end of the movable part (2222) is connected with the sliding main body (2221), and the other end of the movable part (2222) is connected with the fixed arm (221) in a sliding manner so as to extend out of or retract into the fixed arm (221).

7. The spraying device according to claim 6, wherein a limit groove (22221) is arranged at one end of the movable part (2222) in sliding connection with the fixed arm (221), a sealing ring (223) is sleeved in the limit groove (22221), and the sealing ring (223) seals a gap between the sliding arm (222) and the fixed arm (221).

8. The spray device according to any one of claims 1-4, wherein the spray assembly (2) further comprises:

and the spray arms (23) are arranged on the main body (21) and are communicated with the main body (21), and a plurality of spray holes (20) are formed in the spray arms (23).

9. The spray device of claim 8, wherein the angles between any adjacent two of each set of spray arms (23) and each set of telescopic arms (22) are equal.

10. Dishwasher, characterized by comprising a spray device according to any one of claims 1 to 9.