Spraying device for cleaning machine and cleaning machine

Abstract

The present invention relates to a spray device for a cleaning machine and a cleaning machine. A spray device for a cleaning machine includes: a main spray arm, which has a water collection chamber and a main flow channel located on the periphery of the water collection chamber and connected to the water collection chamber, and a top wall plate is provided with a spray hole at a position corresponding to the main flow channel; an auxiliary spray arm, which is arranged on the main spray arm and has a branch flow channel connected to the main flow channel, and at least a water outlet hole connected to the branch flow channel is provided on the top wall plate; the auxiliary spray arm is located above the water collection chamber of the main spray arm, and is arranged to be able to move back and forth along the length direction of the main spray arm or along the direction intersecting the main spray arm. When the auxiliary spray arm swings back and forth, the water outlet angle of the water outlet hole on the auxiliary spray arm changes, thereby directly and comprehensively flushing the central position area, improving the comprehensive cleaning of the center of the circular spray area, and improving the cleaning effect.

Description

Technical Field

[0001] The invention belongs to the field of household appliances, and in particular relates to a spray device for a cleaning machine and the cleaning machine. Background Art

[0002] A cleaning machine is a device that sprays cold or hot water onto dishes to remove dirt adhered to the dishes or fruits and vegetables and clean the dishes or fruits and vegetables. Existing spray cleaning machines generally achieve spraying in all directions by rotating a sprayer.

[0003] The current spray device, such as the Chinese utility model patent "A spray device for a cleaning machine" previously applied by the applicant, whose patent number is ZL201821740203.4 (authorization announcement number is CN209695125U), discloses a spray device for a cleaning machine including a water pump and a spray arm used as a water outlet component of the water pump, the water pump includes a centrifugal impeller, and also includes a transmission mechanism arranged between the spray arm and the centrifugal impeller, which can rotate the spray arm at a constant speed, the transmission mechanism includes a planetary gear mechanism connected to the centrifugal impeller, and a gear ring driven by the planetary gear mechanism, and the gear ring is fixedly connected to the spray arm. When the spray arm rotates, only a circular spray area is formed during the rotation process, and there is no jet hole at the center position of the above-mentioned spray arm, that is, there is no water flow directly flushing in the center of the circular spray area, resulting in the center position corresponding to the dish rack mainly relying on the splashing of water flow, and then the cleaning ability is weak.

[0004] Therefore, it is necessary to further improve the existing spraying device. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a spray device for a cleaning machine that can enhance the cleaning of the central position of the spray area in view of the current status of the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning machine which can enhance the cleaning of the central position of the cleaning machine.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a spray device for a cleaning machine, comprising:

[0008] The main spray arm has a water collecting chamber and a main flow channel located around the water collecting chamber and connected to the water collecting chamber, and a spray hole is opened on the top wall plate at a position corresponding to the main flow channel;

[0009] The auxiliary spray arm is arranged on the main spray arm and has a branch channel connected to the main channel inside, and at least a water outlet hole connected to the branch channel is provided on the top wall plate;

[0010] The feature is that the auxiliary spray arm is located above the water collecting chamber 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 intersecting the main spray arm.

[0011] The movement of the auxiliary spray arm can be achieved by manual pushing or active driving. However, from the perspective of operational reliability, it is preferably also provided with a driving mechanism for driving the auxiliary spray arm to move back and forth along the length direction of the main spray arm, and the power output end of the driving mechanism is connected to the auxiliary spray arm drive.

[0012] Preferably, the auxiliary spray arm is connected to a connecting rod which is arranged crosswise with the auxiliary spray arm, and the interior of the connecting rod is hollow to form a water passage connecting the main channel and the branch channel, and the driving mechanism includes a motor and a transmission mechanism for driving the connecting rod to rotate, and the output shaft of the motor and the rotation axis of the connecting rod extend in the up and down directions, and the transmission mechanism is located above the water collecting chamber of the main spray arm, and the power input end of the transmission mechanism is connected to the motor drive, and the power output end of the transmission mechanism is connected to the connecting rod drive.

[0013] The motor can be located above or below the main spray arm, but preferably, the motor is located below the main spray arm, and the top wall of the main spray arm is provided with a through hole for the output shaft of the motor to pass through at the position corresponding to the water collecting chamber.

[0014] In order to reliably pump water into the water collection chamber, an impeller assembly for pumping water into the water collection chamber is also included, the impeller assembly is mounted on the output shaft of the motor, and the upper part has a centrifugal gear located in the water collection chamber. In this way, the auxiliary spray arm movement and water pumping use the same motor, which reduces the presence of components, reduces costs and structural complexity.

[0015] The auxiliary spray arm may extend along the length direction of the main spray arm, or may extend along a direction intersecting the main spray arm. However, preferably, the auxiliary spray arm extends along the length direction of the main spray arm.

[0016] Preferably, there are two main channels which are arranged at intervals on both sides of the water collecting chamber along the length direction of the main spray arm, and each end of the auxiliary spray arm corresponds to a connecting rod, which is connected to the main channel on the corresponding side.

[0017] In order to realize the opposite movements of the two auxiliary spray arms at the same time, the power output end of the transmission mechanism acts on the two connecting rods intermittently and alternately, so that the rotation directions of the two connecting rods are opposite.

[0018] There are various structural forms of the transmission mechanism, but preferably, the transmission mechanism includes two first gears arranged at intervals along the length direction of the main spray arm and a double gear located between the two first gears, the two first gears are respectively rotatably arranged at positions above the corresponding main channels of the main spray arm and both have water guide channels connected to the main channels on the corresponding sides, the water guide channels are connected to the water guide channels of the connecting rods on the corresponding sides, the double gears are installed on the output shaft of the motor, and include a first sector gear and a second sector gear arranged staggered from top to bottom, the first sector gear can only be directly or indirectly meshed with one of the first gears, and the second sector gear can only be directly or indirectly meshed with the other first gear.

[0019] In order to achieve water flow communication between the main spray arm and the auxiliary spray arm, the main spray arm has a water outlet channel connected to the main channel on the corresponding side at the position corresponding to the first gear, the first gear is installed on the water outlet channel on the corresponding side and its water guide channel is coaxially arranged and connected to the water outlet channel, the inner peripheral edge of the top of the water outlet channel has an annular flange extending inward, and the bottom edge of the water guide channel has a hook that passes through the inner space surrounded by the corresponding annular flange and constrains the annular flange to the inner top wall of the corresponding first gear.

[0020] Preferably, the toothed portion of the first sector gear and the toothed portion of the second sector gear are connected to form a circle of teeth along the projection of the motor output shaft on the top surface of the main spray arm. In addition, the toothed portion of the first sector gear and the toothed portion of the second sector gear may be spaced apart along the projection of the motor output shaft on the top surface of the main spray arm.

[0021] The first sector gear and the first gear can be directly or indirectly meshed, but preferably, the first sector gear is meshed with the corresponding first gear through a linkage assembly, and the linkage assembly includes a meshed first transmission gear and a second transmission gear, the first sector gear is meshed with the first transmission gear, and the second transmission gear is meshed with the first gear on the corresponding side.

[0022] The second sector gear and the first gear on the corresponding side may be directly meshed or indirectly meshed, but preferably, the second sector gear is meshed with the first gear on the corresponding side through a driven gear.

[0023] In order to strengthen the cleaning of the center of the circular spray area formed during the rotation of the main spray arm, there are two auxiliary spray arms, which are arranged at intervals along the length direction of the connecting rod, and the transmission mechanism is located between the two auxiliary spray arms.

[0024] In order to protect the transmission mechanism, the main spray arm is covered with a cover at a position above the water collecting chamber, and a accommodating chamber is formed between the cover and the main spray arm. The transmission mechanism and the auxiliary spray arm are located in the accommodating chamber, and a water spray hole is opened on the top wall plate of the accommodating chamber at a position corresponding to the water outlet hole.

[0025] In order to clean the transmission mechanism and reduce the contact of residues with the transmission mechanism, the accommodating chamber has a water flow channel in communication with the main channel fluid located above the transmission mechanism, a drainage hole is provided on the bottom wall of the water flow channel, the transmission mechanism is located on the water flow path of the drainage hole, and a discharge hole is provided on the wall plate of the accommodating chamber.

[0026] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a cleaning machine with the above-mentioned spraying device, characterized in that it includes a cleaning box with a washing chamber, and the main spraying arm is rotatably arranged at a position adjacent to the bottom of the washing chamber.

[0027] Compared with the prior art, the advantage of the present invention is that the auxiliary spray arm of the spray device is located above the water collecting chamber 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 intersecting the main spray arm. In this way, the auxiliary spray arm cleans the center of the circular spray area formed by the main spray arm during the rotation process, and when the auxiliary spray arm swings back and forth, the water outlet angle of the water outlet on the auxiliary spray arm changes, thereby directly and comprehensively flushing the central position area, improving the comprehensive cleaning of the center of the circular spray area and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a partial structural schematic diagram of the cleaning machine of this embodiment;

[0029] Figure 2 for Figure 1 A cross-sectional view of the cleaning machine with a cover installed on the middle spray device;

[0030] Figure 3 for Figure 1 A schematic diagram of a structure in which a cover is installed on the middle spray device;

[0031] Figure 4 for Figure 1 The structural diagram of the middle spray device;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure from another angle;

[0033] Figure 6 for Figure 3 Sectional view

[0034] Figure 7 for Figure 3 A cross-sectional view from another angle. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] like Figures 1 to 7 As shown, the cleaning machine of this embodiment is used to clean dishes (tableware) or fruits and vegetables. The aforementioned cleaning machine includes a cleaning box 8 and a spray device 01.

[0037] like Figure 2 and Figure 4 As shown, the washing box 8 has a washing chamber 80 inside, and the above-mentioned spray device 01 includes a main spray arm 1, an auxiliary spray arm 2, an impeller assembly 5 and a driving mechanism 3. A mounting seat 81 is arranged at a position adjacent to the bottom of the washing chamber 80, and the main spray arm 1 can be rotatably arranged on the top of the mounting seat 81, and the main spray arm 1 has a water collecting chamber 10 and a main flow channel 11 located on the periphery of the water collecting chamber 10 and connected to the water collecting chamber 10. In this embodiment, there are two main flow channels 11 and they are arranged at intervals on both sides of the water collecting chamber 10 along the length direction of the main spray arm 1. The top wall plate of the above-mentioned main spray arm 1 is provided with a spray hole 111 at a position corresponding to the main flow channel 11. A water inlet channel connected to the water collecting chamber 10 is provided at the bottom of the main spray arm 1. In addition, a driving hole (not shown) connected to the main flow channel and capable of driving the main spray arm 1 to rotate is provided at the bottom of the main spray arm 1 at a position corresponding to the main flow channel 11.

[0038] like Figures 4 to 6 As shown, the auxiliary spray arm 2 is arranged on the main spray arm 1, and is located above the water collecting chamber 10 of the main spray arm 1, and extends along the length direction of the main spray arm 1. Figure 7 As shown, the auxiliary spray arm 2 has a branch channel 20 connected to the main channel 11, and the auxiliary spray arm 2 is connected to a connecting rod 4 arranged crosswise with the auxiliary spray arm 2. In this embodiment, there is a connecting rod 4 at each end of the auxiliary spray arm 2, and the inner hollow of the connecting rod 4 forms a water passage 40 connecting the corresponding side main channel 11 and the branch channel 20. There are two auxiliary spray arms 2 in this embodiment, and they are arranged at intervals along the length direction of the connecting rod 4. The following is an example of one of the auxiliary spray arms 2. The top wall plate of the auxiliary spray arm 2 has a water outlet 201 connected to the branch channel 20.

[0039] The auxiliary spray arm can move back and forth along the length direction of the main spray arm 1 under the drive of the driving mechanism 3, and the power output end of the driving mechanism 3 is connected to the auxiliary spray arm 2. In addition, the auxiliary spray arm 2 can also move back and forth along the direction intersecting with the main spray arm 1 under the drive of the driving mechanism 3. The driving mechanism 3 of this embodiment includes a motor 31 and a transmission mechanism 32 for driving the connecting rod 4 to rotate. The output shaft of the motor 31 and the rotation axis of the connecting rod 4 extend along the up and down direction. The motor 31 is located below the main spray arm 1 and below the cleaning box. The top wall plate of the main spray arm 1 is provided with a through hole 102 through which the output shaft of the power supply machine 31 passes at the position corresponding to the water collection chamber 10. The transmission mechanism 32 is located above the water collection chamber 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 to the motor 31, and the power output end of the transmission mechanism 32 is connected to the connecting rod 4.

[0040] The power output end of the transmission mechanism 32 of this embodiment intermittently and alternately acts on the two connecting rods 4 so that the rotation 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 double gear located between the two first gears 321. The two first gears 321 are rotatably arranged at positions above the corresponding main flow channel 11 of the main spray arm 1 and both have a water guide channel 3211 connected to the main flow channel 11 on the corresponding side, and the water guide channel 3211 is connected to the water channel 40 of the connecting rod 4 on the corresponding side. The double gear is installed on the output shaft of the motor 31 and includes a first sector gear 322 and a second sector gear 323 arranged in a staggered manner from top to bottom. The tooth portion of the first sector gear 322 and the tooth portion of the second sector gear 323 are connected along the axial projection of the output shaft of the motor 31 on the top surface of the main spray arm 1 to enclose a circle of teeth. In this embodiment, the first sector gear 322 can only mesh directly or indirectly with one of the first gears 321, and the second sector gear 323 can only mesh directly or indirectly with the other first gear 321. In this embodiment, the first sector gear 322 meshes with the first gear 321 on the corresponding side through a linkage assembly, and the linkage assembly includes a first transmission gear 326 and a second transmission gear 327 that mesh with each other. The first sector gear 322 meshes with the first transmission gear 326, and the second transmission gear 327 meshes with the first gear 321 on the corresponding side. The second sector gear 323 meshes with the first gear 321 on the corresponding side through a driven gear 325. In this embodiment, Figure 2 As shown, the driven gear 325, the first transmission gear 326 and the second transmission gear 327 are respectively arranged on the mounting plate 328 through mounting shafts, and the mounting plate 328 is arranged horizontally.

[0041] like Figure 2As shown, the above-mentioned mounting seat 81 has a guide channel 811 at the position corresponding to the water inlet channel. The impeller assembly 5 is used to pump the water at the bottom of the washing chamber 50 to the water collecting chamber 10 of the main spray arm 1 through the guide channel 811. The impeller assembly 5 is installed on the output shaft of the motor 31, and the upper part has a centrifugal gear 51 located in the water collecting chamber 10.

[0042] The installation method of the two first gears 321 is the same, and the following is described by taking one of the first gears as an example. In order to realize the installation of the first gear 321, Figure 2 As shown, the main spray arm 1 has a water outlet channel 112 connected to the main channel 11 on the corresponding side at the position corresponding to the first gear 321, the first gear 321 is installed on the water outlet channel 112 on the corresponding side, and its water guide channel 3211 is coaxially arranged and connected to the water outlet channel 112, the inner circumference of the top of the water outlet channel 112 has an annular flange 1121 extending inward, and the bottom edge of the water guide channel 3211 has a hook 3212 that passes through the inner space surrounded by the corresponding annular flange 1121 and constrains the annular flange 1121 on the inner top wall of the corresponding first gear 321. In this way, the first gear 321 rotates relative to the water outlet channel 112. In addition, a sealing ring is provided between the annular flange 1121 and the inner top wall of the first gear 321 to form a sealed connection between the two. As shown Figure 7 As shown, the connection mode between the auxiliary spray arm and the main spray arm is the same as the connection mode between the connecting rod 4 and the main spray arm 1, and will not be described in detail in this embodiment.

[0043] In order to protect the transmission mechanism, the main spray arm 1 is covered with a cover 6 at a position above the water collecting chamber 10. A housing chamber 60 is formed between the cover 6 and the main spray arm 1. The transmission mechanism 32 and the auxiliary spray arm 2 are located in the housing chamber 60. The top wall plate of the housing chamber 60 is provided with a spray hole 601 at a position corresponding to the water outlet hole 201. In order to flush the transmission mechanism, the housing chamber 60 has a water flow channel 602 located above the transmission mechanism 32 and connected to the main flow channel 11. In this embodiment, Figure 2 As shown, a water channel of one of the first gears 321 has a water outlet connected to the water channel 602. A drainage hole 6021 is provided on the bottom wall of the water channel 602, and the transmission mechanism 32 is located on the water flow path of the drainage hole 6021, so that the water discharged through the drainage hole 6021 flushes the transmission mechanism. In addition, a discharge hole 603 is provided on the wall plate of the accommodating chamber 60, and the discharge hole 603 is connected to the washing chamber 80, so that the water after flushing the transmission mechanism is discharged into the washing chamber 80 through the discharge hole 603.

[0044] When the motor 31 is working, it drives the impeller assembly 5, and the impeller assembly sucks the water in the washing chamber 80 into the water collecting chamber 10 of the main spray arm 1 through the guide channel 811 of the fixing seat 81, and a part of the water is sprayed out from the spray hole 111 of the main spray arm 1, and a part of the water is sprayed out from the driving hole at the bottom of the main spray arm 1. The reaction force of the water flow drives the main spray arm 1 to rotate, and the other part of the water flows through the hollow connecting rod 4 into the diversion channel 20 of the auxiliary spray arm 2, and is ejected from the water outlet hole 201 of the auxiliary spray arm 2, and the whole spray device performs a circular motion. At the same time, since the motor 31 drives the double gear to rotate counterclockwise, when the double gear rotates 180° until its first sector gear 322 meshes with the first gear 321 on the left side through the linkage assembly (at this time, the second sector gear 323 and the first gear 321 on the right side are not linked), it drives the first gear 321 to rotate clockwise, thereby driving the front auxiliary spray arm 2 to swing to the right, and driving the rear auxiliary spray arm 2 to swing to the left; when the double gear continues to rotate 180 degrees, its 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 and the first gear 321 on the left side are not linked), thereby driving the front auxiliary spray arm 2 to swing to the left, and driving the rear auxiliary spray arm 2 to swing to the right. In this way, the two auxiliary spray arms 2 are driven to swing back and forth along the length direction of the main spray arm 2, and the central area of ​​the entire main spray arm 1 has a large area of ​​water flow flushing. When the auxiliary spray arm swings back and forth, the water outlet angle of the water outlet changes, thereby directly flushing the central area. In this way, the bowl rack or fruits and vegetables in the central position of the storage basket can be fully cleaned.

[0045] The above embodiment is described by taking the example that the length direction of the first spray arm extends along the left-right direction and the two auxiliary spray arms are arranged in a front-to-back interval.

[0046] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0047] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A spray device for a cleaning machine, comprising: A main spray arm (1) has a water collection chamber (10) and a main flow channel (11) located on the periphery of the water collection chamber (10) and connected to the water collection chamber (10), and a spray hole (111) is provided on the top wall plate at a position corresponding to the main flow channel (11); An auxiliary spray arm (2) is arranged on the main spray arm (1) and has a branch channel (20) in the interior thereof which is connected to the main channel (11), and at least a water outlet hole (201) in the top wall plate thereof is connected to the branch channel (20); Features: The auxiliary spray arm (2) is located above the water collecting chamber (10) of the main spray arm (1), and is arranged to be able to move back and forth along the length direction of the main spray arm (1) or along a direction intersecting the main spray arm (1); It also includes a driving mechanism (3) for driving the auxiliary spray arm (2) to move back and forth along the length direction of the main spray arm (1), and the power output end of the driving mechanism (3) is drivingly connected to the auxiliary spray arm (2); The auxiliary spray arm (2) is connected to a connecting rod (4) arranged crosswise with the auxiliary spray arm (2); the connecting rod (4) is hollow inside to form a water passage (40) connecting the main channel (11) and the branch channel (20); the driving mechanism (3) comprises a motor (31) and a transmission mechanism (32) for driving the connecting rod (4) to rotate; the output shaft of the motor (31) and the rotation axis of the connecting rod (4) extend in the up-down direction; the transmission mechanism (32) is located above the water collecting chamber (10) of the main spray arm (1); the power input end of the transmission mechanism (32) is drivingly connected to the motor (31); and the power output end of the transmission mechanism (32) is drivingly connected to the connecting rod (4).

2. The spray device according to claim 1, characterized in that: The motor (31) is located below the main spray arm (1), and a through hole (102) for the output shaft of the motor (31) to pass through is provided on the top wall plate of the main spray arm (1) at a position corresponding to the water collecting chamber (10).

3. The spray device according to claim 1, characterized in that: It also includes an impeller assembly (5) for pumping water into the water collecting chamber (10). The impeller assembly (5) is mounted on the output shaft of the motor (31) and has a centrifugal gear (51) located in the water collecting chamber (10) on its upper portion.

4. The spray device according to claim 1, characterized in that: The auxiliary spray arm (2) extends along the length direction of the main spray arm (1).

5. The spray device according to claim 4, characterized in that: There are two main flow channels (11) which are arranged at intervals on both sides of the water collecting chamber (10) along the length direction of the main spray arm (1), and each end of the auxiliary spray arm (2) corresponds to a connecting rod (4), and the connecting rod (4) is connected to the main flow channel (11) on the corresponding side.

6. The spray device according to claim 5, characterized in that: The power output end of the transmission mechanism (32) acts on the two connecting rods (4) intermittently and alternately, so that the two connecting rods (4) rotate in opposite directions.

7. The spray device according to claim 6, characterized in that: The transmission mechanism (32) comprises two first gears (321) arranged at intervals along the length direction of the main spray arm (1) and a double gear located between the two first gears (321); the two first gears (321) are rotatably arranged at positions above the main flow channel (11) corresponding to the main spray arm (1) and each has a water guide channel (3211) connected to the main flow channel (11) on the corresponding side; the water guide channel (3211) is connected to the water channel (40) of the connecting rod (4) on the corresponding side; the double gear is mounted on the output shaft of the motor (31) and comprises a first sector gear (322) and a second sector gear (323) arranged in a staggered manner from top to bottom; the first sector gear (322) can only directly or indirectly mesh with one of the first gears (321); and the second sector gear (323) can only directly or indirectly mesh with the other first gear (321).

8. The spray device according to claim 7, characterized in that: The main spray arm (1) has a water outlet channel (112) at a position corresponding to the first gear (321) and connected to the main flow channel (11) on the corresponding side; the first gear (321) is mounted on the water outlet channel (112) on the corresponding side and its water guide channel (3211) is coaxially arranged and connected to 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); the bottom edge of the water guide channel (3211) has a hook (3212) that passes through the inner space surrounded by the corresponding annular flange (1121) and constrains the annular flange (1121) on the inner top wall of the corresponding first gear (321).

9. The spray device according to claim 7, characterized in that: 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) and projected onto the top surface of the main spray arm (1) to enclose a circle of teeth.

10. The spray device according to claim 7, characterized in that: The first sector gear (322) is meshed with the corresponding first gear (321) through a linkage assembly, and the linkage assembly includes a first transmission gear (326) and a second transmission gear (327) that 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.

11. The spray device according to claim 7, characterized in that: The second sector gear (323) meshes with the first gear (321) on the corresponding side through a driven gear (325).

12. The spray device according to claim 7, characterized in that: There are two auxiliary spray arms (2), which are arranged at intervals along the length direction of the connecting rod (4), and the transmission mechanism (32) is located between the two auxiliary spray arms (2).

13. The spray device according to any one of claims 1 to 12, characterized in that: The main spray arm (1) is covered with a cover (6) at a position above the water collecting chamber (10); a receiving chamber (60) is formed between the cover (6) and the main spray arm (1); the transmission mechanism (32) and the auxiliary spray arm (2) are located in the receiving chamber (60); and a water spray hole (601) is provided on the top wall plate of the receiving chamber (60) at a position corresponding to the water outlet hole (201).

14. The spray device according to claim 13, characterized in that: The accommodating chamber (60) has a water flow channel (602) located above the transmission mechanism (32) and connected to the fluid of the main channel (11), a drainage hole (6021) is provided on the bottom wall of the water flow channel (602), the transmission mechanism (32) is located on the water flow path of the drainage hole, and a discharge hole (603) is provided on the wall plate of the accommodating chamber (60).

15. A cleaning machine having a spray device according to any one of claims 1 to 14, characterized in that: The invention comprises a washing box (8) having a washing chamber (80), wherein the main spray arm (1) is rotatably arranged at a position adjacent to the bottom of the washing chamber (80).

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