CN114748009A - A spray set and cleaning machine for cleaning machine - Google Patents

Abstract

The invention relates to a spraying device for a cleaning machine and the cleaning machine, wherein the spraying device for the cleaning machine comprises: the main spray arm is internally provided with a water collecting cavity and a main runner which is positioned on the periphery of the water collecting cavity and communicated with the water collecting cavity, and a top wall plate of the main spray arm is provided with a spray hole at a position corresponding to the main runner; the auxiliary spray arm is arranged on the main spray arm, a sub-runner communicated with the main runner is arranged in the auxiliary spray arm, and water outlet holes communicated with the sub-runner are formed in at least a top wall plate of the auxiliary spray arm; the auxiliary spray arm is positioned above the water collecting cavity of the main spray arm and is arranged to move back and forth along the length direction of the main spray arm or along the direction crossed with the main spray arm. When the auxiliary spray arm swings back and forth, the water outlet angle of the water outlet hole in the auxiliary spray arm changes, so that the central position area is directly and comprehensively washed, the comprehensive cleaning of the center of the circular spray area is improved, and the cleaning effect is improved.

Description

A spray set and cleaning machine for cleaning machine

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a spraying device for a cleaning machine and the cleaning machine.

Background

A washing machine is an apparatus that sprays cold or hot water to dishes to remove dirt adhered to the dishes or fruits and vegetables and wash the dishes or fruits and vegetables. The existing spray type cleaning machine generally realizes the spraying in all directions through the rotation of the sprayer.

Present spray set, as the chinese utility model patent "a spray set for cleaning machine" that this applicant applied for earlier, its patent number is ZL201821740203.4 (the grant announcement number is CN209695125U) discloses a spray set for cleaning machine includes the water pump and is used as the spray arm of water pump play water part, the water pump includes centrifugal impeller, still including setting up between spray arm and the centrifugal impeller, can make the spray arm constant speed rotatory drive mechanism, drive mechanism includes the planetary gear mechanism who is connected with the centrifugal impeller transmission, drives pivoted ring gear by planetary gear mechanism, ring gear and spray arm fixed connection. When the spray arm rotates, only a circular spray area is formed in the rotating process, and the central position of the spray arm is not provided with a jet hole, namely, the central part of the circular spray area is directly washed by water flow, so that the central position corresponding to the bowl rack is mainly dependent on the sputtering of water flow, and the cleaning capability is weak.

Accordingly, further improvements to existing spray devices are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a spraying device for a cleaning machine, which can enhance the cleaning of the central position of the spraying area, in view of the current state of the prior art.

The second technical problem to be solved by the invention is to provide a cleaning machine for enhancing the cleaning of the central position of the cleaning machine.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a spray assembly for a cleaning machine comprising:

the main spray arm is internally provided with a water collecting cavity and a main runner which is positioned on the periphery of the water collecting cavity and communicated with the water collecting cavity, and a top wall plate of the main spray arm is provided with a spray hole at a position corresponding to the main runner;

the auxiliary spray arm is arranged on the main spray arm, a sub-runner communicated with the main runner is arranged in the auxiliary spray arm, and water outlet holes communicated with the sub-runner are formed in at least a top wall plate of the auxiliary spray arm;

the method is characterized in that: the auxiliary spray arm is positioned above the water collecting cavity of the main spray arm and is arranged to move back and forth along the length direction of the main spray arm or along the direction crossed with the main spray arm.

The movement of the secondary spray arm can be in a form of manual pushing or active driving, but from the viewpoint of operational reliability, the secondary spray arm further comprises a driving mechanism for driving the secondary spray arm to move back and forth along the length direction of the primary spray arm, and a power output end of the driving mechanism is in driving connection with the secondary spray arm.

Preferably, the auxiliary spray arm is connected with a connecting rod which is crossed with the auxiliary spray arm, a water channel which is communicated with the main runner and the sub-runners is formed in the connecting rod in a hollow mode, the driving mechanism comprises a motor and a transmission mechanism which is used for driving the connecting rod to rotate, an output shaft of the motor and a rotation axis of the connecting rod extend along the up-and-down direction, the transmission mechanism is located above a water collecting cavity of the main spray arm, a power input end of the transmission mechanism is connected with the motor in a driving mode, and a power output end of the transmission mechanism is connected with the connecting rod in a driving mode.

The motor can be positioned above the main spray arm and also can be positioned below the main spray arm, but preferably, the motor is positioned below the main spray arm, and a through hole for the output shaft of the motor to pass through is formed in the position of the top wall plate of the main spray arm, which corresponds to the water collecting cavity.

In order to reliably pump water into the water collecting cavity, the water collecting device also comprises an impeller assembly for pumping water into the water collecting cavity, the impeller assembly is arranged on an output shaft of the motor, and the upper part of the impeller assembly is provided with a centrifugal gear positioned in the water collecting cavity. Therefore, the auxiliary spray arm moves and pumps water by using the same motor, so that the existence of parts is reduced, and the cost and the structural complexity are reduced.

The sub spray arm may extend in a length direction of the main spray arm and may also extend in a direction crossing the main spray arm, but preferably, the sub spray arm extends in a length direction of the main spray arm.

Preferably, two main runners are arranged on two sides of the water collecting cavity at intervals along the length direction of the main spray arm, two ends of the auxiliary spray arm are respectively and correspondingly provided with one connecting rod, and the connecting rods are communicated with the main runners on the corresponding sides.

In order to realize the opposite movement of the two auxiliary spray arms at the same time, the power output end of the transmission mechanism intermittently and alternately acts on the two connecting rods, so that the rotating directions of the two connecting rods are opposite.

The transmission mechanism has various structural forms, but preferably, the transmission mechanism includes two first gears arranged at intervals along the length direction of the main spray arm and a duplicate gear located between the two first gears, the two first gears are respectively rotatably disposed on the positions of the main spray arm corresponding to the main runner and respectively have water guide channels communicated with the main runner on the corresponding side, the water guide channels are communicated with the water passing channels of the connecting rods on the corresponding side, the duplicate gear is mounted on the output shaft of the motor and includes a first sector gear and a second sector gear which are staggered from top to bottom, the first sector gear can only be directly or indirectly engaged with one of the first gears, and the second sector gear can only be directly or indirectly engaged with the other first gear.

In order to realize water flow communication between the main spray arm and the auxiliary spray arm, the main spray arm is provided with a water outlet channel communicated with the main channel on the corresponding side at a position corresponding to the first gear, the first gear is arranged on the water outlet channel on the corresponding side, a water guide channel of the first gear is coaxially arranged and communicated with the water outlet channel, the inner peripheral edge of the top of the water outlet channel is provided with an annular flange extending inwards, and the bottom edge of the water guide channel is provided with a clamping hook which penetrates through an inner peripheral space defined by the corresponding annular flange and restrains the annular flange on the inner top wall of the corresponding first gear.

Preferably, the teeth of the first sector gear and the teeth of the second sector gear are engaged with each other along the axial direction of the motor output shaft on the projection of the top surface of the main spray arm to form a ring of teeth. In addition, a gap is left between the tooth part of the first sector gear and the tooth part of the second sector gear along the axial direction of the motor output shaft on the projection of the top surface of the main spray arm.

The first sector gear and the first gear may be directly or indirectly engaged, but preferably, the first sector gear is engaged with the corresponding first gear through a linkage assembly, the linkage assembly includes a first transmission gear and a second transmission gear, which are engaged with each other, the first sector gear is engaged with the first transmission gear, and the second transmission gear is engaged with the first gear of the corresponding side.

The second sector gear and the first gear on the opposite side may be directly meshed or indirectly meshed, but preferably, the second sector gear is meshed with the first gear on the opposite side through a driven gear.

In order to strengthen the cleaning of the center of the circular spraying area formed in the rotating process of the main spraying arm, the number of the auxiliary spraying arms is two, the auxiliary spraying arms are arranged at intervals along the length direction of the connecting rod, and the transmission mechanism is positioned between the two auxiliary spraying arms.

In order to protect the transmission mechanism, a cover cap covers the position of the main spray arm above the water collecting cavity, an accommodating cavity is formed by enclosing the cover cap and the main spray arm, the transmission mechanism and the auxiliary spray arm are positioned in the accommodating cavity, and a water spraying hole is formed in the position, corresponding to the water outlet hole, of the top wall plate of the accommodating cavity.

In order to clean the transmission mechanism and reduce the contact of residues with the transmission mechanism, a water flow channel which is positioned above the transmission mechanism and is communicated with the main flow channel in the accommodating chamber is provided, a drain hole is formed in the bottom wall of the water flow channel, the transmission mechanism is positioned on a water flow path of the drain hole, and a drain hole is formed in a wall plate of the accommodating chamber. Prevent because of drive mechanism

The technical solution adopted by the present invention to solve the second technical problem is as follows: the cleaning machine with the spraying device is characterized in that: the washing machine comprises a washing box with a washing chamber, and a main spray arm can be rotatably arranged on the position of the washing chamber, which is adjacent to the bottom.

Compared with the prior art, the invention has the advantages that: this spray set's vice spray arm is located the top that catchments the water cavity of main spray arm, and be arranged into can along the length direction back and forth movement of main spray arm or along the direction back and forth movement who crosses with main spray arm, so, vice spray arm washs main spray arm at the central authorities that rotate the circular spray zone that the in-process formed, and when vice spray arm back and forth swing, the play water angle of apopore on the vice spray arm changes, thereby wash central position region's directness comprehensively, improved the comprehensive washing to circular spray zone's central authorities, and the cleaning performance is improved.

Drawings

FIG. 1 is a schematic view of a part of the structure of the cleaning machine of the present embodiment;

FIG. 2 is a cross-sectional view of the cleaning machine of FIG. 1 with the spray assembly having the shroud mounted thereon;

FIG. 3 is a schematic view of the spray apparatus of FIG. 1 with a cover mounted thereon;

FIG. 4 is a schematic view of the spraying device shown in FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a cross-sectional view of FIG. 3

Fig. 7 is a cross-sectional view at another angle of fig. 3.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, the washing machine of the present embodiment is used to wash dishes (tableware) or fruits and vegetables. The aforementioned washer includes a washing tank 8 and a shower device 01.

As shown in fig. 2 and 4, the washing chamber 80 is provided inside the washing tank 8, and the spray device 01 includes a main spray arm 1, a sub spray arm 2, an impeller assembly 5, and a driving mechanism 3. The washing device is characterized in that a mounting seat 81 is arranged at a position of the washing chamber 80 adjacent to the bottom, the main spray arm 1 is rotatably arranged at the top of the mounting seat 81, the main spray arm 1 is internally provided with a water collecting cavity 10 and a main runner 11 which is positioned at the periphery of the water collecting cavity 10 and communicated with the water collecting cavity 10, two main runners 11 in the embodiment are arranged at intervals at two sides of the water collecting cavity 10 along the length direction of the main spray arm 1, and a top wall plate of the main spray arm 1 is provided with spray holes 111 at positions corresponding to the main runners 11. The bottom of the main spray arm 1 is provided with a water inlet channel communicated with the water collecting cavity 10. In addition, the bottom of the main spray arm 1 is opened with a driving hole (not shown) communicating with the main runner 11 at a position corresponding to the main runner and driving the main spray arm 1 to rotate.

As shown in fig. 4 to 6, the sub spray arm 2 is disposed on the main spray arm 1, is located above the water collecting chamber 10 of the main spray arm 1, and extends along the longitudinal direction of the main spray arm 1. As shown in fig. 7, the sub spray arm 2 has a sub flow passage 20 communicating with the main flow passage 11 inside, and the sub spray arm 2 is connected with a connecting rod 4 arranged to intersect with the sub spray arm 2, in this embodiment, two ends of the sub spray arm 2 correspond to one connecting rod 4 respectively, and a water passage 40 communicating the main flow passage 11 and the sub flow passage 20 on the corresponding side is formed in the hollow inside of the connecting rod 4. The secondary spray arms 2 in this embodiment are two and spaced apart along the length of the connecting rod 4. One of the sub-shower arms 2 will be described as an example. The top wall plate of the secondary spray arm 2 is provided with water outlet holes 201 communicated with the sub-runners 20.

The auxiliary spray arm can move back and forth along the length direction of the main spray arm 1 under the driving of the driving mechanism 3, and the power output end of the driving mechanism 3 is connected with the auxiliary spray arm 2 in a driving way. In addition, the secondary spray arm 2 can also move back and forth in a direction intersecting the primary spray arm 1 under the drive of the drive mechanism 3. The driving mechanism 3 of this embodiment includes a motor 31 and a transmission mechanism 32 for driving the link 4 to rotate, an output shaft of the motor 31 and a rotation axis of the link 4 extend along the up-down direction, and the motor 31 is located under the main spray arm 1 and under the cleaning box. The top wall plate of the main spray arm 1 is provided with a through hole 102 corresponding to the water collecting cavity 10 for the output shaft of the power supply 31 to pass through. The transmission mechanism 32 is located above the water collecting cavity 10 of the main spray arm 1 and between the two auxiliary spray arms 2. The power input end of the transmission mechanism 32 is connected with the motor 31 in a driving way, and the power output end of the transmission mechanism 32 is connected with the connecting rod 4 in a driving way.

The power output end of the transmission mechanism 32 of the embodiment intermittently and alternately acts on the two connecting rods 4 so that the rotating directions of the two connecting rods 4 are opposite. Specifically, the transmission mechanism 32 includes two first gears 321 arranged at intervals along the length direction of the main spray arm 1 and a duplicate gear located between the two first gears 321, the two first gears 321 are respectively rotatably disposed at positions on the main runner 11 corresponding to the main spray arm 1 and each have a water guide channel 3211 communicated with the main runner 11 on the corresponding side, and the water guide channel 3211 is communicated with the water passage 40 of the connecting rod 4 on the corresponding side. The duplicate gear is installed on the output shaft of the motor 31, and includes a first sector gear 322 and a second sector gear 323 which are staggered from top to bottom, the teeth of the first sector gear 322 and the teeth of the second sector gear 323 are connected along the axial direction of the output shaft of the motor 31 on the projection of the top surface of the main spray arm 1 to form a ring of teeth. The first sector gear 322 in this embodiment can be directly or indirectly engaged with only one of the first gears 321, and the second sector gear 323 can be directly or indirectly engaged with only the other first gear 321. In this embodiment, the first sector gear 322 is engaged with the first gear 321 on the corresponding side through a linkage assembly, the linkage assembly includes a first transmission gear 326 and a second transmission gear 327 that are engaged with each other, the first sector gear 322 is engaged with the first transmission gear 326, and the second transmission gear 327 is engaged with the first gear 321 on the corresponding side. The second sector gear 323 meshes with the first gear 321 on the corresponding side via the driven gear 325. In this embodiment, as shown in fig. 2, the driven gear 325, the first transmission gear 326 and the second transmission gear 327 are respectively disposed on a mounting plate 328 by mounting shafts, and the mounting plate 328 is arranged transversely.

As shown in fig. 2, the mounting seat 81 has a diversion channel 811 at a position corresponding to the water inlet channel, the impeller assembly 5 is used for pumping the water at the bottom of the washing chamber 50 into the water collection chamber 10 of the main spray arm 1 through the diversion channel 811, the impeller assembly 5 is mounted on the output shaft of the motor 31, and the upper portion of the impeller assembly has the centrifugal gear 51 located in the water collection chamber 10.

The two first gears 321 are mounted in the same manner, and one of the first gears will be described as an example. In order to realize the installation of the first gear 321, as shown in fig. 2, the main shower arm 1 has a water outlet channel 112 communicating with the main flow channel 11 on the corresponding side at a position corresponding to the first gear 321, the first gear 321 is installed on the water outlet channel 112 on the corresponding side, and the water guide channel 3211 of the first gear is coaxially arranged and communicated with the water outlet channel 112, the inner peripheral edge of the top of the water outlet channel 112 has an inwardly extending annular flange 1121, and the bottom edge of the water guide channel 3211 has a hook 3212 passing through the inner peripheral space surrounded by the corresponding annular flange 1121 to constrain the annular flange 1121 on the inner top wall of the corresponding first gear 321. Thus, the first gear 321 rotates relative to the water outlet passage 112. Furthermore, a sealing ring is disposed between the annular flange 1121 and the inner top wall of the first gear 321 to form a sealing connection therebetween. As shown in fig. 7, the connection manner of the auxiliary spray arm and the main spray arm is the same as that of the connecting rod 4 and the main spray arm 1, and details are not repeated in this embodiment.

In order to protect the transmission mechanism, the main spray arm 1 is covered with the cover cap 6 at a position above the water collecting cavity 10, an accommodating cavity 60 is formed between the cover cap 6 and the main spray arm 1 in an enclosing manner, the transmission mechanism 32 and the auxiliary spray arm 2 are located in the accommodating cavity 60, and a top wall plate of the accommodating cavity 60 is provided with water spraying holes 601 at positions corresponding to the water outlet holes 201. In order to flush the transmission mechanism, the accommodating chamber 60 has a water passage 602 located above the transmission mechanism 32 and in fluid communication with the main flow passage 11, and in this embodiment, as shown in fig. 2, the water passage of one of the first gears 321 has a water passing opening communicating with the water passage 602. A drain hole 6021 is formed in the bottom wall of the water flow passage 602, and the transmission mechanism 32 is located in the flow path of the drain hole 6021, so that the transmission mechanism is washed by the water discharged through the drain hole 6021. In addition, a drain hole 603 is formed in a wall plate of the accommodating chamber 60, and the drain hole 603 is communicated with the washing chamber 80, so that the water flushed from the transmission mechanism is drained into the washing chamber 80 through the drain hole 603.

When the motor 31 works, the impeller assembly 5 is driven, the impeller assembly sucks water in the washing chamber 80 into the water collecting cavity 10 of the main spray arm 1 through the flow guide channel 811 of the fixing seat 81, one part of the water is sprayed out from the spray holes 111 of the main spray arm 1, one part of the water is sprayed out from the driving holes at the bottom of the main spray arm 1, the main spray arm 1 is driven to rotate by the reaction force of the water flow, the other part of the water flow enters the branch channel 20 of the auxiliary spray arm 2 through the hollow connecting rod 4 and is sprayed out from the water outlet hole 201 of the auxiliary spray arm 2, and the whole spray device makes circular motion. Meanwhile, as the motor 31 drives the dual gear to rotate counterclockwise, when the dual gear rotates 180 degrees until the first sector gear 322 thereof is meshed with the first gear 321 on the left side through the linkage assembly (at this time, the second sector gear 323 is not linked with the first gear 321 on the right side), the first gear 321 is driven to rotate clockwise, so as to drive the auxiliary spray arm 2 on the front side to swing rightward, and drive the auxiliary spray arm 2 on the rear side to swing leftward; when the duplicate gear rotates 180 degrees, the second sector gear 323 rotates counterclockwise with the first gear 321 on the right side through the transmission gear (at this time, the first sector gear 322 is not linked with the first gear 321 on the left side), so as to drive the auxiliary spray arm 2 on the front side to swing leftward, and drive the auxiliary spray arm 2 on the rear side to swing rightward. So, drive two vice spray arm 2 and control the back and forth swing along the length direction of main spray arm 2, the central zone of whole main spray arm 1 has a rivers of a great area to wash, when vice spray arm back and forth swing, the play water angle of apopore changes to directly wash central position region. Thus, the bowl rack or the fruit and vegetable on the center of the object basket can be cleaned completely.

The above embodiment has been described with an example in which the first shower arm extends in the longitudinal direction in the left-right direction, and two sub shower arms are arranged at a distance from each other in the front-rear direction.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (17)

1. A spray assembly for a cleaning machine comprising:

the main spray arm (1) is internally provided with a water collecting cavity (10) and a main runner (11) which is positioned on the periphery of the water collecting cavity (10) and communicated with the water collecting cavity (10), and a top wall plate of the main spray arm is provided with spray holes (111) at the position corresponding to the main runner (11);

the auxiliary spray arm (2) is arranged on the main spray arm (1), a sub-runner (20) communicated with the main runner (11) is arranged in the auxiliary spray arm, and at least a top wall plate of the auxiliary spray arm is provided with a water outlet hole (201) communicated with the sub-runner (20);

the method is characterized in that: the auxiliary spray arm (2) is positioned above the water collecting cavity (10) of the main spray arm (1) and is arranged to move back and forth along the length direction of the main spray arm (1) or move back and forth along the direction crossed with the main spray arm (1).

2. The spray assembly of claim 1, wherein: the spraying device is characterized by further comprising a driving mechanism (3) for driving the auxiliary spraying arm (2) to move back and forth along the length direction of the main spraying arm (1), and a power output end of the driving mechanism (3) is connected with the auxiliary spraying arm (2) in a driving mode.

3. The spray assembly of claim 2, wherein: the water spraying device is characterized in that a connecting rod (4) which is crossed with the auxiliary spraying arm (2) is connected to the auxiliary spraying arm (2), a water channel (40) which is communicated with the main runner (11) and the sub-runner (20) is formed in the connecting rod (4) in a hollow mode, the driving mechanism (3) comprises a motor (31) and a transmission mechanism (32) which is used for driving the connecting rod (4) to rotate, an output shaft of the motor (31) and a rotating axis of the connecting rod (4) extend along the vertical direction, the transmission mechanism (32) is located above the water collecting cavity (10) of the main spraying arm (1), a power input end of the transmission mechanism (32) is connected with the motor (31) in a driving mode, and a power output end of the transmission mechanism (32) is connected with the connecting rod (4) in a driving mode.

4. The spray device of claim 3, wherein: the motor (31) is positioned below the main spray arm (1), and a through hole (102) for the output shaft of the motor (31) to pass through is formed in the position, corresponding to the water collecting cavity (10), of the top wall plate of the main spray arm (1).

5. The spray device of claim 3, wherein: the water collecting device also comprises an impeller assembly (5) for pumping water into the water collecting cavity (10), wherein the impeller assembly (5) is arranged on an output shaft of the motor (31), and the upper part of the impeller assembly is provided with a centrifugal gear (51) positioned in the water collecting cavity (10).

6. The spray device of claim 3, wherein: the auxiliary spray arm (2) extends along the length direction of the main spray arm (1).

7. The spray device of claim 6, wherein: the two main flow channels (11) are arranged on two sides of the water collecting cavity (10) at intervals along the length direction of the main spray arm (1), two ends of the auxiliary spray arm (2) are respectively and correspondingly provided with one connecting rod (4), and the connecting rods (4) are communicated with the main flow channels (11) on the corresponding sides.

8. The spray device of claim 7, wherein: the power output end of the transmission mechanism (32) intermittently and alternately acts on the two connecting rods (4) so as to enable the rotating directions of the two connecting rods (4) to be opposite.

9. The spray device of claim 8, wherein: the transmission mechanism (32) comprises two first gears (321) which are arranged along the length direction of the main spray arm (1) at intervals and a duplicate gear which is positioned between the two first gears (321), the two first gears (321) are respectively and rotatably arranged on the positions of the main spray arm (1) corresponding to the main runner (11) and are respectively provided with a water guide channel (3211) communicated with the main runner (11) on the corresponding side, the water guide channel (3211) is communicated with the water passage (40) of the connecting rod (4) at the corresponding side, the duplicate gear is arranged on the output shaft of the motor (31), and comprises a first sector gear (322) and a second sector gear (323) which are arranged in a staggered way from top to bottom, the first sector gear (322) can only mesh directly or indirectly with one of the first gears (321), the second toothed segment (323) can only mesh directly or indirectly with the other first toothed segment (321).

10. The spray device of claim 9, wherein: the main spray arm (1) is provided with a water outlet channel (112) communicated with a main flow channel (11) on the corresponding side at a position corresponding to the first gear (321), the first gear (321) is installed on the water outlet channel (112) on the corresponding side, a water guide channel (3211) of the first gear is coaxially arranged with and communicated with the water outlet channel (112), the inner periphery of the top of the water outlet channel (112) is provided with an annular flange (1121) extending inwards, and the bottom edge of the water guide channel (3211) is provided with a clamping hook (3212) which penetrates through the inner peripheral space surrounded by the corresponding annular flange (1121) to restrain the annular flange (1121) on the inner top wall of the corresponding first gear (321).

11. The spray assembly of claim 9, wherein: the teeth of the first sector gear (322) and the teeth of the second sector gear (323) are engaged with each other along the axial direction of the output shaft of the motor (31) on the projection of the top surface of the main spray arm (1) to form a ring of teeth.

12. The spray assembly of claim 9, wherein: the first sector gear (322) is meshed with the corresponding first gear (321) through a linkage assembly, the linkage assembly comprises a first transmission gear (326) and a second transmission gear (327) which are meshed with each other, the first sector gear (322) is meshed with the first transmission gear (326), and the second transmission gear (327) is meshed with the first gear (321) on the corresponding side.

13. The spray assembly of claim 9, wherein: the second sector gear (323) is meshed with the first gear (321) on the corresponding side via a driven gear (325).

14. The spray assembly of claim 9, wherein: the number of the auxiliary spray arms (2) is two, the auxiliary spray arms are arranged at intervals along the length direction of the connecting rod (4), and the transmission mechanism (32) is positioned between the two auxiliary spray arms (2).

15. The spraying device according to any one of claims 2 to 14, characterized in that: the main spray arm (1) is covered with a cover cap (6) at a position above the water collecting cavity (10), an accommodating cavity (60) is formed by enclosing the cover cap (6) and the main spray arm (1), the transmission mechanism (32) and the auxiliary spray arm (2) are positioned in the accommodating cavity (60), and a water spraying hole (601) is formed in a position, corresponding to the water outlet hole (201), of a top wall plate of the accommodating cavity (60).

16. The spray assembly of claim 15, wherein: the accommodating chamber (60) is internally provided with a water flow channel (602) which is positioned above the transmission mechanism (32) and is communicated with the main flow channel (11) in a fluid manner, a drain hole (6021) is formed in the bottom wall of the water flow channel (602), the transmission mechanism (32) is positioned on a water flow path of the drain hole, and a discharge hole (603) is formed in a wall plate of the accommodating chamber (60).

17. A cleaning machine having a shower arrangement according to any one of claims 1 to 16, characterized in that: comprises a washing box (8) with a washing chamber (80), and the main spray arm (1) can be rotatably arranged on the position of the washing chamber (80) near the bottom.

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