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, wherein the spray device for a cleaning machine comprises a mounting seat; a main spray arm, which is rotatably arranged on the mounting seat, has a main flow channel formed inside, and has a water inlet channel connected to the main flow channel, and at least a spray hole is provided on the top wall plate; an auxiliary spray arm, which has a branch flow channel connected to the main flow channel inside, and has a water outlet connected to the branch flow channel; the first end of the auxiliary spray arm is rotatably arranged on the side wall of the main spray arm, and has a sliding member extending along its rotation axis; a movable member, which is arranged to move back and forth along the length direction of the main spray arm, has a slide groove extending in the up and down direction for the sliding member to slide, and drives the second end of the auxiliary spray arm to swing up and down relative to the main spray arm when the movable member moves back and forth. In the process of the auxiliary spray arm rotating with the main spray arm, the changing jet angle increases the cleaning area, and realizes multi-angle and all-round flushing.

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, with patent number ZL201821740203.4 (authorization announcement number 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. The above-mentioned spray device achieves the purpose of spraying, but only forms a circular spray area during the rotation process, and a cleaning dead angle may occur.

[0004] In order to solve the above-mentioned technical problems, the Chinese utility model patent "A spray arm and a cleaning machine for a cleaning machine" previously applied by the applicant, whose patent number is ZL202020282374.8 (authorization announcement number is CN212972883U), discloses a spray arm for a cleaning machine, including a mounting base for being fixed relative to the cleaning machine; a main spray arm, which is rotatably arranged on the mounting base, and has a main channel formed therein, and has a water inlet channel for water to flow into the main channel; an auxiliary spray arm, which is rotatably arranged at a position adjacent to the end of the main spray arm, and has a branch channel fluidically connected to the main channel, and at least one of the auxiliary spray arm and the main spray arm is provided with a spray hole for water to be sprayed out; an elastic member, which acts on the auxiliary spray arm and has a tendency to rotate the auxiliary spray arm relative to the main spray arm in the energy storage state. The auxiliary spray arm in the above-mentioned spray arm can be reliably rotated and expanded outward, thereby increasing the cleaning area. However, it only sprays upward and cannot change the spray angle such as spraying outward, so its cleaning range is limited.

[0005] Therefore, it is necessary to further improve the existing spraying device. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a spray device for a cleaning machine that changes the spray angle to increase the cleaning area in view of the current status of the above-mentioned prior art.

[0007] The second technical problem to be solved by the present invention is to provide a spray device for side spraying to clean the inner side of the cleaning machine.

[0008] 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:

[0009] A mounting base, used to fix relative to the cleaning machine;

[0010] A main spray arm is rotatably arranged on the mounting seat, a main flow channel is formed inside the main spray arm, and a water inlet channel is connected to the main flow channel, and a spray hole is opened on at least the top wall plate;

[0011] The auxiliary spray arm has a branch channel connected to the main channel and a water outlet hole connected to the branch channel;

[0012] The invention is characterized in that the first end of the auxiliary spray arm is rotatably arranged on the side wall of the main spray arm and has a sliding member extending along its rotation axis; the spray device also includes:

[0013] The movable part is arranged to move back and forth along the length direction of the main spray arm, and is provided with a slide groove extending along the up and down direction for the sliding of the sliding part. When the movable part moves back and forth, it drives the second end of the auxiliary spray arm to swing up and down relative to the main spray arm.

[0014] The moving part can be actively driven by a driving mechanism or can move outwards under the action of centrifugal force. However, preferably, an elastic part is installed on the moving part, and the fixed end of the elastic part is installed on the main spray arm. When the main spray arm is in a rotating state, the elastic part always has a tendency to move along the length direction of the main spray arm toward the fixed end of the elastic part. In this way, during the rotation of the main spray arm, the moving part moves outwards under the action of centrifugal force, and the existence of the elastic part realizes the automatic reset of the moving part.

[0015] The elastic part and the movable part can be arranged on the main spray arm, on the side wall of the main spray arm, or under the main spray arm, but preferably, a fixing part is arranged on the top wall plate of the main spray arm, the elastic part and the movable part are both located on the main spray arm, and the fixed end of the elastic part is connected to the fixing part.

[0016] The movable part may extend along the length direction of the main spray arm or along the direction intersecting the main spray arm, but preferably, the movable part extends along the length direction of the main spray arm and has an upwardly extending connecting plate, and the slide groove is provided on the connecting plate.

[0017] In order to realize the rotational connection between the auxiliary spray arm and the main spray arm, the auxiliary spray arm is provided with a water inlet on the first wall panel facing the main spray arm, and the main spray arm is provided with an outlet connecting the water inlet and the main channel at the position corresponding to the water inlet, and a hook is provided on the surrounding side of the water inlet for passing through the outlet to constrain the side wall where the outlet of the main spray arm is located to the first wall panel of the auxiliary spray arm.

[0018] In order to limit the moving stroke of the movable part, the movable part is located on the main spray arm, and a guide groove extending along its moving direction is provided on the movable part, the spray hole is provided at the position corresponding to the guide groove, and a blocking part located in the guide groove and sliding relative to the guide groove is provided on the top surface of the main spray arm.

[0019] Preferably, the main channel extends along the length direction of the main spray arm, and includes a water collecting chamber located near the central position and water flow channels located on both sides of the water collecting chamber, the spray hole is opened at the position corresponding to the water flow channel, and the water inlet channel is opened at the bottom of the main spray arm and at the position corresponding to the water collecting chamber.

[0020] In order to position the auxiliary spray arm after rotation, the main spray arm is provided with a rotary vane which can rotate relative to the main spray arm to position the auxiliary spray arm. When the rotary vane is rotated to be arranged along the length direction of the movable part, the free end of the rotary vane abuts against the first end of the movable part, and the auxiliary spray arm is arranged vertically.

[0021] In order to achieve the positioning of the rotary vane, the end surface of the first end of the movable part has an inwardly recessed area, and the free end of the rotary vane is V-shaped with the tip facing outward. When the rotary vane is arranged along the length direction of the movable part, the tip of the rotary vane is located in the recessed area.

[0022] In order to achieve further positioning of the rotary vane, the rotary vane and the movable part are both located on the main spray arm, and the rotary vane is provided with an elastic clamping foot. The top surface of the main spray arm has a downwardly recessed groove. When the rotary vane is arranged along the length direction of the movable part, the free end of the clamping foot is arranged corresponding to the groove and is clamped into the groove.

[0023] Preferably, when the rotary vane is arranged along the length direction of the movable part, the auxiliary spray arm is perpendicular to the main spray arm.

[0024] Specifically, there are two groups of auxiliary spray arms and movable parts. A fixing part is arranged near the center of the main spray arm, and the fixing part is located between the two movable parts. The rotary vane is rotatably arranged near the center on the fixing part.

[0025] The auxiliary spray arm can be arranged at the end of the main spray arm or on the side wall of the main spray arm, but preferably, the two side walls of the main spray arm arranged along its rotation direction are first side walls, and the auxiliary spray arm is arranged on one of the first side walls.

[0026] The auxiliary spray arms can be arranged on the same side or staggered, but preferably, there are two groups of auxiliary spray arms and movable parts, and they are arranged along the length direction of the main spray arm. Along the rotation direction of the main spray arm, the main spray arm is located between the two auxiliary spray arms.

[0027] Preferably, when the second end of the auxiliary spray arm is in an upward swinging state, the water outlet is located on the outer wall surface of the auxiliary spray arm, and when the second end of the auxiliary spray arm is in a downward swinging state, the water outlet is located on the top wall surface of the auxiliary spray arm. In addition, it is also possible to adopt that when the second end is in an upward swinging state, the water outlet is located on the top surface, and when it is in a downward swinging state, the water outlet is located on the outer wall surface of the auxiliary spray arm.

[0028] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a cleaning machine with the above-mentioned spray device, characterized in that it includes a cleaning box with a washing chamber, the mounting seat is fixed at a position near the bottom of the washing chamber, and the bottom of the main spray arm is rotatably arranged on the upper part of the mounting seat at a position near the center.

[0029] In order to support the storage basket, the washing chamber is provided with a storage basket. When the second end of the auxiliary spray arm is swung upward to the highest position, the storage basket is placed on the auxiliary spray arm, and the water outlet faces the corresponding inner side of the washing chamber. In this way, the existence of the auxiliary spray arm can eliminate the need for a separate structure to support the storage basket.

[0030] In order to reduce the friction between the auxiliary spray arm and the storage basket, a ball is arranged on the end face of the second end of the auxiliary spray arm, and an annular groove which is recessed upward and extends circumferentially for the ball to slide is opened on the bottom surface of the storage basket at the position corresponding to the ball. When the main spray arm is in a rotating state, the ball is always located in the annular groove.

[0031] Compared with the prior art, the advantage of the present invention is that when the movable part in the spray device moves back and forth along the length direction of the main spray arm, the second end of the auxiliary spray arm can swing up and down, thereby adjusting the jet angle of the water outlet on the auxiliary spray arm. In the process of the auxiliary spray arm rotating with the main spray arm, the changing jet angle increases the cleaning area, realizes multi-angle and all-round flushing, and improves the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1It is a partial structural schematic diagram of the main spray arm and the auxiliary spray arm in the cleaning machine in a vertical state;

[0033] Figure 2 is a cross-sectional view of the cleaning machine of this embodiment;

[0034] Figure 3 for Figure 1 A schematic diagram of the structure of the spray device in FIG.

[0035] Figure 4 for Figure 3 A longitudinal cross-sectional view of

[0036] Figure 5 for Figure 3 A transverse cross-sectional view of

[0037] Figure 6 It is a partial structural schematic diagram of the main spray arm and the auxiliary spray arm in the cleaning machine in a parallel state;

[0038] Figure 7 for Figure 6 A cross-sectional view of the middle spray device;

[0039] Figure 8 for Figure 6 Schematic diagram of the structure of the spray device. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings.

[0041] like Figures 1 to 8 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 5, a storage basket 6, a spray device 01 and a water pump mechanism 7.

[0042] like Figure 2 and Figure 4 As shown, the interior of the cleaning box 5 has a washing chamber 50, and the above-mentioned spray device 01 includes a mounting seat 51, a main spray arm 1, an auxiliary spray arm 2 and a movable part 3. The mounting seat 51 is arranged at a position near the bottom of the washing chamber 50, and the main spray arm 1 can be rotatably arranged on the top of the mounting seat 51, and a main flow channel 10 is formed inside the main spray arm 1. Specifically, the main flow channel 10 extends along the length direction of the main spray arm 1, and includes a water collecting chamber 101 located near the central position and two water flow channels 102 located on both sides of the water collecting chamber 101, and the spray hole 1021 is opened at a position corresponding to the water flow channel 102. A water inlet channel connected to the water collecting chamber 101 is opened at a position near the central position of the bottom of the main spray arm 1, and the water inlet channel is arranged corresponding to the water collecting chamber 101, and the top wall plate of the main spray arm 1 is opened at a position corresponding to the water flow channel 102. In addition, as Figure 4As shown, a driving hole 106 is provided at the bottom of the main spray arm 1 and is connected to the water flow channel 102 and can drive the main spray arm 1 to rotate.

[0043] like Figure 4 As shown, the mounting seat 51 has a guide channel 511 at a position corresponding to the water inlet channel, and the water pumping mechanism 7 pumps the water at the bottom of the washing chamber 50 to the water collecting chamber 101 of the main spray arm 1 through the guide channel 511. The water pumping mechanism 7 in this embodiment includes a motor 71 and an impeller assembly 72, the upper part of the impeller assembly 72 is a centrifugal impeller located in the water collecting chamber 101 of the spray arm, the lower part of the impeller assembly 72 is an axial flow impeller located below the water inlet channel, the motor 71 is located below the washing box, and is arranged below the impeller assembly 72, and its output shaft is connected to the impeller assembly 72.

[0044] like Figure 3 , Figures 5 to 7 As shown, the two side walls of the main spray arm 1 arranged along the rotation direction thereof are the first side walls 1a, and the auxiliary spray arm 2 is arranged on one of the first side walls 1a. There are two auxiliary spray arms 2 in this embodiment, and they are arranged at intervals along the length direction of the main spray arm 1. Along the rotation direction of the main spray arm 1, the main spray arm 1 is located between the two auxiliary spray arms 2. The structure, installation form and movement form of the auxiliary spray arm 2 are the same, and one of the auxiliary spray arms 2 is taken as an example for description below.

[0045] like Figure 7 As shown, the auxiliary spray arm 2 has a branch channel 20 connected to the main channel 10, and has a water outlet 201 connected to the branch channel 20. The first end of the auxiliary spray arm 2 in this embodiment is rotatably arranged on the side wall of the main spray arm 1. In order to realize the rotation connection between the auxiliary spray arm 2 and the main spray arm 1, as shown in FIG. Figure 4 As shown, the auxiliary spray arm 2 is provided with a water inlet 211 connected to the corresponding branch channel 20 on the first wall plate 21 facing the main spray arm 1, and the main spray arm 1 is provided with an outlet 105 connecting the water inlet 211 and the main channel 10 at the position corresponding to the water inlet 211. The circumferential side of the water inlet 211 is provided with a hook 212 that passes through the outlet 105 and constrains the side wall where the outlet 105 of the main spray arm 1 is located to the first wall plate 21 of the auxiliary spray arm 2. There are three hooks 212 and they are arranged at intervals along the circumference of the water inlet 211. In addition, two or more hooks can be used, and each hook 212 forms a rotation axis of the auxiliary spray arm 2.

[0046] like Figures 1 to 4As shown, each auxiliary spray arm 2 corresponds to a movable part 3 and an elastic part, and the elastic part and the movable part 3 are both located on the main spray arm 1. A fixing part 11 is provided near the middle of the top wall plate of the main spray arm 1, and the fixing part is located between the two movable parts 3. The following is an example of a group of auxiliary sprays 2, movable parts 3 and elastic parts. The movable part 3 of this embodiment extends along the length direction of the main spray arm 1. The elastic part is a spring 35 arranged along the length direction of the main spray arm 1. The fixed end of the spring 35 is installed on the fixing part 11, and the other end of the spring 35 is connected to the position near the inner end of the corresponding movable part 3. In this way, during the rotation of the main spray arm 1, under the action of centrifugal force, the movable part 3 can move outward along the length direction of the main spray arm 1 (that is, towards the direction away from the fixed end of the spring 35). The above-mentioned spring 35 makes the movable part 3 always have a tendency to move inward (toward the fixed end of the spring 35) along the length direction of the main spray arm 1 when the main spray arm 1 is in a rotating state.

[0047] In order to limit the back and forth movement of the movable part 3 and avoid covering the spray hole 1021 on the main spray arm 1, as shown in FIG. Figures 1 to 4 , Figures 6 to 8 As shown, the movable part 3 is provided with a guide groove 32 extending along its moving direction, the spray hole 1021 is provided at a position corresponding to the guide groove 32, and a blocking member 14 is provided on the top surface of the main spray arm 1, which is located in the guide groove 32 and slides relative to the guide groove 32. In this embodiment, each movable part 3 corresponds to two blocking members 14, and the existence of the two blocking members 14 limits the back and forth movement of the movable part.

[0048] In order to realize the connection between the movable part and the corresponding auxiliary spray arm 2, as Figure 4 As shown, the outer end of the movable part 3 has a connecting plate 31 extending upward, and the connecting plate 31 is provided with a slide groove 311 extending in the up-down direction. The auxiliary spray arm 2 has a sliding part 23 extending along its rotation axis near the middle, and the sliding part 23 is located in the slide groove 311 and slides along the slide groove 311. When the movable part 3 moves back and forth along the length direction of the main spray arm 1, it drives the second end of the auxiliary spray arm 2 to swing up and down relative to the main spray arm 1. In this embodiment, when the movable part 3 moves inward along the length direction of the main spray arm 1, it drives the second end of the auxiliary spray arm 2 to swing downward. When the second end of the auxiliary spray arm 2 is in a downward swinging state, the water outlet 201 is located on the top wall surface of the auxiliary spray arm 2. For details, see Figure 6 When the movable part 3 moves outward along the length direction of the main spray arm 1, it drives the second end of the auxiliary spray arm 2 to swing upward. When the second end of the auxiliary spray arm 2 is in the upward swinging state, the water outlet 201 is located on the outer wall surface of the auxiliary spray arm 2. For details, see Figure 3 As shown, the water outlet 201 faces the inner side of the washing chamber, so that the inner side of the washing chamber 40 is sprayed and cleaned.

[0049] In order to position the upward swinging position of the auxiliary spray arm 2, the main spray arm 1 is provided with a rotary vane 4 which can rotate relative to the main spray arm 1 to position the auxiliary spray arm 2. The rotary vane 4 is rotatably arranged on the fixing member 11 near the center. The rotary vane 4 of this embodiment has two free ends, and the free ends of the rotary vane 4 are in a V shape with the tip facing outward. The end surface of the first end of the movable member 3 has an inwardly concave concave area 33, such as Figure 3 As shown, when the rotary vane 4 rotates to be arranged along the length direction of the movable part 3, the tip 42 of the rotary vane 4 is located in the concave area 33 on the corresponding side, and the auxiliary spray arm 2 is perpendicular to the main spray arm 1. At this time, the second end of the auxiliary spray arm 2 is in a state of swinging upward to the highest position. In order to achieve the positioning of the rotary vane 4, the rotary vane 4 and the movable part 3 are both located on the main spray arm 1, and are provided with elastic clamping feet 43. The top surface of the main spray arm 1 has a groove 12 that is concave downward. When the rotary vane 4 is arranged along the length direction of the movable part 3, the free end of the clamping foot 43 is arranged corresponding to the groove 12 and is clamped into the groove 12.

[0050] like Figure 2 As shown, the above-mentioned storage basket 6 is located in the washing chamber 50, and when the second end of the auxiliary spray arm 2 is in a state of swinging upward to the highest position, the storage basket 6 is placed on the auxiliary spray arm 2. In order to reduce the friction between the storage basket and the auxiliary spray arm 2, the end surface of the second end of the auxiliary spray arm 2 is provided with a ball 22, and the bottom surface of the storage basket 6 is provided with an annular groove 61 that is recessed upward and extends in the circumferential direction at the position corresponding to the ball 22 for the ball 22 to slide. When the main spray arm 1 is in a rotating state, the ball 22 is always located in the annular groove 61. In addition, in order to better support the storage basket 6, the second end of the auxiliary spray arm 2 has an end with an enlarged area, and the above-mentioned ball 22 is located on the above-mentioned end.

[0051] When washing dishes, the rotor rotates to Figure 6 and Figure 7 In the position shown, the motor 71 is driven, and the impeller assembly draws the water flow in the washing chamber 50 into the water collecting chamber 101 of the main spray arm 1 through the guide channel 511 of the fixing seat 51, and then ejects it from the spray hole 1021, and drives the main spray arm 1 to rotate under the action of the water flow. The speed of the motor is variable, such as Figure 6 and Figure 7 As shown, the auxiliary spray arm 2 is parallel to the main spray arm 1 and rotates with the main spray arm 1. Because the auxiliary spray arm 2 rotates synchronously with the main spray arm 1, (two auxiliary spray arms 2 are added to increase the flushing area); when the speed of the motor 71 is increased, as shown in FIG. Figure 8As shown in FIG. 1 , due to the high speed, a large centrifugal force is generated. At this time, the elastic force of the spring 35 is smaller than the outward centrifugal force of the movable part 3, and the spring 35 is stretched. The pulling force of the spring 35 becomes larger. When the pulling force of the spring 35 is equal to the centrifugal force generated by the movable part 3, the movable part 3 no longer moves outward and remains at the position shown in FIG. Figure 4 , at which point the centrifugal force of the movable part 3 sliding outward is equal to the pulling force of the spring on the movable part 3. The higher the speed of the motor 71, the greater the centrifugal force, and the longer the spring 35 is stretched, and the movable part 3 can be forced to move by changing the speed of the motor 71. After the movable part 3 moves, it can drive the auxiliary spray arm to rotate and form an angle with the main spray arm. This angle will also change with the position of the movable part 3. The jet on the auxiliary spray arm 2 will change with the change of the rotation angle of the auxiliary spray arm 2. In this way, when the auxiliary spray arm 2 rotates in a circle with the main spray arm, the jet on the water outlet can emit water at different angles, realizing multi-angle and all-round flushing, greatly improving the effective flushing coverage area.

[0052] When the inner wall of the washing chamber is cleaned, the rotary blade 4 is rotated to Figure 3 , at which time the auxiliary spray arm 2 is at right angles to the main spray arm 1, and the water outlet 201 of the auxiliary spray arm 2 can wash the inner side of the washing chamber from the front. When the main spray arm 1 and the auxiliary spray arm 2 make circular motions, the water flow on the auxiliary spray arm 2 can wash the entire inner side of the washing chamber 50, and combined with the water flow washing of the bottom drive hole 106, the bottom surface and the inner side of the washing chamber 50 are cleaned.

[0053] When cleaning fruits and vegetables, the rotary blade 4 is rotated to Figures 2 to 3 The auxiliary spray arm 2 is at a right angle to the main spray arm, the end face of the second end of the auxiliary spray arm 2 has a ball 22, the storage basket 6 is placed on the auxiliary spray arm 2, the auxiliary spray arm 2 supports the storage basket 6, the ball 22 on the auxiliary spray arm 2 and the annular groove 61 at the bottom of the storage basket 6, when the auxiliary spray arm 2 makes a circular motion, the ball 22 on the auxiliary spray arm 2 rolls, which can greatly reduce friction, and the spray hole 1021 on the main spray arm 1 can clean the fruits and vegetables in the storage basket.

[0054] 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.

Claims

1. A spray device for a cleaning machine, comprising: A mounting seat (51) for fixing relative to the cleaning machine; A main spray arm (1) is rotatably arranged on the mounting seat (51), a main flow channel (10) is formed inside the main spray arm, and a water inlet channel is provided which is connected to the main flow channel (10), and a spray hole (1021) is provided on at least the top wall plate; An auxiliary spray arm (2) having a branch channel (20) in its interior that is connected to the main channel (10), and having a water outlet hole (201) in communication with the branch channel (20); It is characterized in that The first end of the auxiliary spray arm (2) is rotatably arranged on the side wall of the main spray arm (1) and has a sliding member (23) extending along its rotation axis; the spray device also includes: The movable part (3) is arranged to be able to move back and forth along the length direction of the main spray arm (1), and is provided with a slide groove (311) extending in the up and down direction for the sliding part (23) to slide. When the movable part (3) moves back and forth, it drives the second end of the auxiliary spray arm (2) to swing up and down relative to the main spray arm (1).

2. The spray device according to claim 1, characterized in that: An elastic member is mounted on the movable member (3), and a fixed end of the elastic member is mounted on the main spray arm (1). When the main spray arm (1) is in a rotating state, the elastic member causes the movable member (3) to always have a tendency to move along the length direction of the main spray arm (1) toward the fixed end of the elastic member.

3. The spray device according to claim 2, characterized in that: A fixing part (11) is arranged on the top wall plate of the main spray arm (1), the elastic part and the movable part (3) are both located on the main spray arm (1), and the fixed end of the elastic part is connected to the fixing part (11).

4. The spray device according to claim 1, characterized in that: The movable part (3) extends along the length direction of the main spray arm (1) and has a connecting plate (31) extending upward, and the sliding groove (311) is provided on the connecting plate (31).

5. The spray device according to claim 1, characterized in that: The auxiliary spray arm (2) is provided with a water inlet (211) on a first wall plate (21) facing the main spray arm (1); the main spray arm (1) is provided with an outlet (105) connecting the water inlet (211) and the main flow channel (10) at a position corresponding to the water inlet (211); and a hook (212) is provided around the water inlet (211) for passing through the outlet (105) and constraining the side wall where the outlet (105) of the main spray arm (1) is located to the first wall plate (21) of the auxiliary spray arm (2).

6. The spray device according to claim 1, characterized in that: The movable part (3) is located on the main spray arm (1), and a guide groove (32) extending along the moving direction of the movable part (3) is provided, the spray hole (1021) is provided at a position corresponding to the guide groove (32), and a blocking part (14) is provided on the top surface of the main spray arm (1) and is located in the guide groove (32) and slides relative to the guide groove (32).

7. The spray device according to claim 1, characterized in that: The main flow channel (10) extends along the length direction of the main spray arm (1), and comprises a water collecting chamber (101) located near the central position and water flow channels (102) located on both sides of the water collecting chamber (101); the spray hole (1021) is arranged at a position corresponding to the water flow channel (102); and the water inlet channel is arranged at the bottom of the main spray arm (1) and at a position corresponding to the water collecting chamber (101).

8. The spray device according to claim 1, characterized in that: The main spray arm (1) is provided with a rotary vane (4) which can rotate relative to the main spray arm (1) to position the auxiliary spray arm (2); when the rotary vane (4) is rotated to be arranged along the length direction of the movable part (3), the free end of the rotary vane (4) abuts against the first end of the movable part (3), and the auxiliary spray arm (2) is arranged vertically.

9. The spray device according to claim 8, characterized in that: The end surface of the first end of the movable part (3) has an inwardly recessed depression (33), and the free end of the rotary blade (4) is in a V-shape with the tip facing outward. When the rotary blade (4) is arranged along the length direction of the movable part (3), the tip (42) of the rotary blade (4) is located in the recessed depression (33).

10. The spray device according to claim 8, characterized in that: The rotary vane (4) and the movable part (3) are both located on the main spray arm (1), and the rotary vane (4) is provided with an elastic clamping foot (43). The top surface of the main spray arm (1) has a downwardly recessed groove (12). When the rotary vane (4) is arranged along the length direction of the movable part (3), the free end of the clamping foot (43) is arranged corresponding to the groove (12) and is clamped into the groove (12).

11. The spray device according to claim 8, characterized in that: When the rotary vane (4) is arranged along the length direction of the movable part (3), the auxiliary spray arm (2) is perpendicular to the main spray arm (1).

12. The spray device according to claim 8, characterized in that: The auxiliary spray arm (2) and the movable part (3) are provided in two groups. A fixing part (11) is provided at a position near the center of the main spray arm (1). The fixing part (11) is located between the two movable parts (3). The rotary vane (4) is rotatably provided on the fixing part (11) at a position near the center.

13. The spray device according to any one of claims 1 to 11, characterized in that: The two side walls of the main spray arm (1) arranged along the rotation direction thereof are first side walls (1a), and the auxiliary spray arm (2) is arranged on one of the first side walls (1a).

14. The spray device according to claim 13, characterized in that: There are two groups of auxiliary spray arms (2) and movable parts (3), which are arranged along the length direction of the main spray arm (1). Along the rotation direction of the main spray arm (1), the main spray arm (1) is located between the two auxiliary spray arms (2).

15. The spray device according to claim 13, characterized in that: When the second end of the auxiliary spray arm (2) is in an upward swinging state, the water outlet hole (201) is located on the outer wall surface of the auxiliary spray arm (2); when the second end of the auxiliary spray arm (2) is in a downward swinging state, the water outlet hole (201) is located on the top wall surface of the auxiliary spray arm (2).

16. A cleaning machine having a spray device according to any one of claims 1 to 15, characterized in that: The invention comprises a cleaning box (5) having a washing chamber (50), wherein the mounting seat (51) is fixed at a position near the bottom of the washing chamber (50), and the bottom of the main spray arm (1) is rotatably arranged on the upper part of the mounting seat (51) at a position near the center.

17. The cleaning machine according to claim 16, characterized in that: A storage basket (6) is arranged in the washing chamber (50), and when the second end of the auxiliary spray arm (2) is in a state of swinging upward to the highest position, the storage basket (6) is placed on the auxiliary spray arm (2).

18. The cleaning machine according to claim 17, characterized in that: The end surface of the second end of the auxiliary spray arm (2) is provided with a ball (22), and the bottom surface of the storage basket (6) is provided with an annular groove (61) at a position corresponding to the ball (22) which is recessed upward and extends in a circumferential direction for the ball (22) to slide. When the main spray arm (1) is in a rotating state, the ball (22) is always located in the annular groove (61).

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