CN217429939U

CN217429939U - Spraying system for cleaning machine and cleaning machine

Info

Publication number: CN217429939U
Application number: CN202221041590.9U
Authority: CN
Inventors: 王栋
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-09-16
Anticipated expiration: 2032-04-26

Abstract

The utility model relates to a spray system for a cleaning machine and the cleaning machine, which comprises a first spray arm, wherein a flow passage is arranged in the first spray arm, and the first spray arm is provided with a water spray hole communicated with the flow passage; the second spray arm is positioned above the first spray arm, a water flow channel is arranged in the second spray arm, and the second spray arm is provided with a water outlet communicated with the water flow channel; the connecting pipe is vertically arranged, the lower end of the connecting pipe is arranged on the top wall plate of the first spray arm and is connected with the second spray arm, a water channel communicated with the water flow channel is arranged in the connecting pipe, and a water inlet communicated with the water channel is formed in the position, close to the bottom, of the side wall of the connecting pipe; the second spray arm has a first state arranged along the extending direction of the connecting pipe, and the water outlet hole is at least positioned on the wall plate of the second spray arm far away from the connecting pipe when the second spray arm is in the first state. Improves the cleaning effect and realizes the fixed-point quick cleaning of the deep tableware, such as the cup.

Description

Spraying system for cleaning machine and cleaning machine

Technical Field

The utility model belongs to the domestic appliance field, concretely relates to a spraying system and cleaning machine for 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 various directions through the rotation of a sprayer.

Present cleaning machine, like the chinese utility model patent of applicant's prior application "a double-deck spraying system and use cleaning machine that has this spraying system", its patent number is ZL202020224083.3 (the grant bulletin number is CN212972879U) discloses a double-deck spraying system, including first spray arm and impeller subassembly, first spray arm has the body that extends along length direction, the inside cavity of body forms from the middle first runner, the second runner that extend to both ends respectively along length direction, the body middle part forms the chamber that catchments that is linked together with the end of intaking of first runner, second runner respectively, impeller subassembly is arranged in pumping to first spray arm, still including the second spray arm of locating first spray arm top, the second spray arm is through the chamber fluid intercommunication that catchments of water channel and first spray arm. When the utility model is used, the impeller component draws water into the water collecting cavity of the first spray arm, and the water flow is sprayed out after being dispersed through the first flow passage and the second flow passage to carry out lower layer spraying; simultaneously, water in the water collecting cavity enters the second spray arm above the water collecting cavity through the output channel to spray on the upper layer, so that double-layer spraying is realized. The cleaning machine of the double-layer spraying system enlarges the spraying range, is beneficial to eliminating the cleaning dead angle and improving the cleaning effect, but only realizes the spraying and cleaning from bottom to top, if objects to be cleaned (such as cup mouths or bowl mouths towards the central area) are transversely arranged, the cleaning effect is limited, and the cleaning effect on the cups is also limited.

Accordingly, further improvements to existing sprinkler systems are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first technical problem that will solve is to the current situation of above-mentioned prior art, provides a through upper and lower and horizontal alternately spray the cleaning with the spray system that is used for the cleaning machine that improves the cleaning performance.

The utility model discloses the second technical problem that will solve provides a cleaning machine who has above-mentioned spraying system.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a spray system for a cleaning machine comprising:

the first spray arm is internally provided with a flow channel and is provided with a water spray hole communicated with the flow channel;

the second spray arm is positioned above the first spray arm, a water flow channel is arranged in the second spray arm, and the second spray arm is provided with a water outlet hole communicated with the water flow channel;

it is characterized by also comprising:

the connecting pipe is vertically arranged, the lower end of the connecting pipe is arranged on the top wall plate of the first spray arm, the connecting pipe is connected with the second spray arm, a water channel communicated with the water flow channel is arranged in the connecting pipe, and a water inlet communicated with the water channel is formed in the position, close to the bottom, of the side wall of the connecting pipe; the second spray arm has a first state arranged along the extending direction of the connecting pipe, and the water outlet hole is at least positioned on a wall plate of the second spray arm far away from the connecting pipe when the second spray arm is in the first state.

The water inlet can be communicated with the flow channel of the first spray arm through the pipe body and also can be communicated with a washing chamber of the cleaning machine.

In order to reliably pump water into the water flow channel of the second spray arm, the water pump further comprises a first impeller for pumping water entering through the water inlet into the water channel, wherein the first impeller is rotatably arranged in the connecting pipe and is positioned at the upstream of the water channel along the fluid flow path.

The connection pipe may be disposed at a position offset from the center of the first nozzle arm or at a position adjacent to the center, but preferably, the connection pipe is disposed at a position adjacent to the center of the first nozzle arm.

In order to reliably pump water into the flow channel of the first spray arm, the bottom wall of the first spray arm is provided with a water inlet channel, and the water pump mechanism is used for pumping water into the flow channel through the water inlet channel.

Preferably, the runner includes a water collecting cavity located in the center and two branch runners arranged at two sides of the water collecting cavity at intervals along the length direction of the first spray arm, the water inlet channel is arranged at a position corresponding to the water collecting cavity and communicated with the water collecting cavity, the water pumping mechanism includes a motor and a second impeller, an output shaft of the motor extends along the vertical direction, the upper end of the output shaft of the motor is located on a top wall plate of the first spray arm, the first impeller is mounted on the upper end of the output shaft of the motor, and the second impeller is mounted on the output shaft of the motor and is locally located in the water collecting cavity. The first impeller may be driven by a separate drive.

The second spray arm can be vertically arranged or transversely arranged, the second spray arm is provided with a second state of transverse arrangement, and the water outlet hole is formed in the top wall plate and/or the bottom wall plate of the second spray arm when the second spray arm is in the second state. Therefore, the upper layer and the lower layer are cleaned, and the cleaning effect is improved.

Preferably, when the second spray arm is in the second state, the second spray arm and the connecting pipe are in an inverted L shape as a whole. In addition, a T-shape may be employed.

In order to conveniently realize the switching between the first state and the second state of the second spray arm, the top wall and the side wall of the connecting pipe are respectively provided with a water outlet channel which is communicated with the water flowing channel, the second spray arm is provided with a water inlet channel which is communicated with the water flowing channel towards the first wall plate of the connecting pipe, the water inlet channel is arranged on the water outlet channel of the side wall of the connecting pipe and is communicated with the water flowing channel through the water outlet channel when the second spray arm is in the first state, and the water inlet channel is arranged on the water outlet channel of the top wall of the connecting pipe and is communicated with the water flowing channel through the water outlet channel when the second spray arm is in the second state. At this time, the second spray arm and the connecting pipe can be detachably connected, and the second spray arm and the connecting pipe can also be connected.

In order to block the water outlet channel which is not connected with the second spray arm, a movable part for opening or closing an inlet of the water outlet channel is arranged in the connecting pipe at a position corresponding to the water outlet channel. The movable part can move under the driving of the driving mechanism and also can move under the action of other external force.

In order to realize the automatic reset of the moving parts, each moving part is correspondingly provided with a first elastic part, the first elastic part acts on the moving part, and the moving part always has the trend of moving towards the direction of closing the inlet of the corresponding water outlet channel in the energy storage state.

In order to push the corresponding movable element to move when the second spray arm is arranged on the connecting pipe, the second spray arm is provided with a pushing element which partially penetrates out of the water inlet channel, the pushing element pushes the movable element on the side wall of the connecting pipe to overcome the elastic force of the corresponding first elastic element to move in the direction away from the corresponding inlet so as to open the corresponding water outlet channel when the second spray arm is in the first state, and the pushing element pushes the movable element on the top wall of the connecting pipe to overcome the elastic force of the corresponding first elastic element to move in the direction away from the corresponding inlet so as to open the corresponding water outlet channel when the second spray arm is in the second state.

In order to realize the automatic reset of the pushing piece, the automatic reset device also comprises a second elastic piece which acts on the pushing piece and enables the pushing piece to always have the tendency of moving towards the direction of closing the outlet of the corresponding water inlet channel.

One or two water inlet channels can be adopted, but preferably, the water inlet channels are arranged at intervals along the length direction of the first wall plate.

In order to make the second spray arm connect on the connecting pipe all the time, and automatic switch first state and second state when the second spray arm upset, the second spray arm can set up with tilting on the connecting pipe the second spray arm rotates downwards to being in under the first state, and the inhalant canal that is located the below is installed on the exhalant canal on the lateral wall of connecting pipe the second spray arm upwards rotates to being in under the second state, and another inhalant canal is installed on the exhalant canal on the roof of connecting pipe.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the cleaning machine with the spraying system is characterized by further comprising a cleaning box with a washing chamber inside, a flow guide seat is arranged at the position, close to the bottom, of the washing chamber, the first spraying arm can be rotatably arranged on the flow guide seat, and the water inlet is communicated with the washing chamber.

Compared with the prior art, the utility model has the advantages of: this spraying system's second spray arm vertical layout, and be connected with first spray arm through the connecting pipe, the horizontal rivers of apopore spun through the second spray arm intersect with the rivers of the spout hole spun that makes progress of first spray arm, the cleaning performance has been improved, in addition, cup or bowl can back-off on connecting pipe and second spray arm, so, the inner wall of the apopore on the second spray arm to the cup sprays the washing, and at the second spray arm along with first spray arm rotation in-process, can wash the cup inner wall totally in short time, the fixed point of having realized this kind of deep tableware of cup is washd fast promptly.

Drawings

Fig. 1 is a partial structural schematic view of a second spray arm in a second state according to the embodiment;

FIG. 2 is a longitudinal cross-sectional view of the sprinkler system of FIG. 1;

FIG. 3 is another angled longitudinal sectional view of the sprinkler system of FIG. 1;

FIG. 4 is a transverse cross-sectional view of the sprinkler system of FIG. 1;

fig. 5 is a partial structural schematic view of the second spray arm of the present embodiment in a first state;

fig. 6 is a longitudinal cross-sectional view of the sprinkler system of fig. 5.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6, the washing machine of the present embodiment is a washing machine for washing fruits, vegetables or dishes. The cleaning machine comprises a cleaning box 6 and a spraying system.

The above-mentioned washing tank 6 includes a tank body 6a having an open top and a door body (not shown) covering the open top of the tank body. In a state where the door closes the open top of the cabinet 6a, the cabinet 6a and the door enclose to form a washing chamber 60. The cross section of the case 6a of this embodiment is square. The bottom of the washing chamber 60 is provided with a deflector seat 7.

The spraying system comprises a first spraying arm 1, a second spraying arm 2, a connecting pipe 3, a first impeller 4 and a water pumping mechanism 5. The first spray arm 1 is rotatably disposed on the guide base 7, and the first spray arm 1 has a flow channel 10 therein. The top wall plate of the first spray arm 1 has a water spray hole 101 communicating with the flow passage 10, and water is sprayed upward through the water spray hole 101. The first spray arm 1 may be in a straight shape, an S shape, or other shapes. The flow channel 10 includes a water collecting cavity 10a located at the center and two branch channels 10b arranged at intervals along the length direction of the first spray arm 1 at both sides of the water collecting cavity 10a, the water collecting cavity 10a is communicated with the branch channels 10b at both sides, and the water spray holes 101 in this embodiment are arranged at the positions corresponding to the branch channels 10b, and are provided in plurality and arranged at intervals along the length direction of the branch channels. The bottom wall plate of the first spray arm 1 has a water inlet channel 102 near the center, which is communicated with the water collecting cavity 10a, and the water pumping mechanism 8 is used to pump the water at the bottom of the washing chamber 60 into the water collecting cavity 10a of the first spray arm 1 through the internal flow channel of the diversion seat 7 and the water inlet channel 102. The bottom surface of the first spray arm 1 is provided with two driving holes for driving the first spray arm 1 to rotate, the driving holes are communicated with the flow channel, and the reaction force generated by the water flow ejected by the two driving holes drives the first spray arm 1 to rotate.

The water pumping mechanism 5 in this embodiment includes a motor 51 and a second impeller 52, an output shaft of the motor 51 extends in the vertical direction, the second impeller 52 is installed on the output shaft of the motor 51 and is partially located in the water collecting cavity 10a, and the first impeller 4 can be installed on the output shaft of the motor 51 and is driven by the motor 51 to rotate. In this way, the first impeller 4 and the second impeller 52 are both rotated by the motor 51.

The second spray arm 2 is located above the first spray arm 1 and is connected to the first spray arm 1 through a connection pipe 3. Specifically, the connecting pipe 3 is vertically arranged, and the lower end of the connecting pipe 3 is disposed at a position near the center of the top wall plate of the first spray arm 1, and the water spray holes 101 are located on the peripheral side of the connecting pipe 3. In addition, the second spray arm 2 has a water flow channel 20 inside, and the second spray arm 2 has a water outlet hole 201 communicated with the water flow channel 20; the connecting pipe 3 has a water channel 30 communicating with the water channel 20 inside, and a water inlet 301 communicating the washing chamber 60 and the water channel 30 is disposed at a position near the bottom of the side wall of the connecting pipe 3, the first impeller 4 is disposed in the connecting pipe 3 and located at the upstream of the water channel 30 along the fluid flow path, for pumping the water in the washing chamber 60 into the water channel 20 through the water inlet 301 and the water channel 30, and finally spraying the water through the water outlet 201. In the present embodiment, the second spray arm 2 has a first state arranged along the extending direction of the connection pipe 3 and a second state arranged transversely, and in the second state of the second spray arm 2, the second spray arm 2 is perpendicular to the connection pipe 3, and the second spray arm 2 and the connection pipe 3 are in an inverted L shape as a whole. When the second spray arm 2 is in the second state, the top wall plate and the bottom wall plate of the second spray arm 2 are both provided with a plurality of water outlet holes 201 arranged at intervals along the length direction of the second spray arm 2. So, second spray arm 2 can upwards spout rivers, also can spout rivers downwards to under the effect of the upwards spout rivers of first spray arm 1, increased the washing area, improved the cleaning performance.

In order to switch the second spray arm 2 between the first and second states, i.e. under the action of external forces, the second spray arm 2 is arranged on the connecting pipe 3 so as to be able to rotate up and down via the connecting plate. Specifically, the top wall and the side wall of the connection pipe 3 are respectively provided with a water outlet channel 31 in fluid communication with the water passage 30, the water outlet channel 31 is partially located outside the corresponding wall plate of the connection pipe 3, and the periphery of the water outlet channel 31 is provided with a plurality of notches 312 arranged at intervals along the circumferential direction for water to flow out. The connecting pipe 3 is provided with a movable member 32 for opening or closing the inlet 311 of the water outlet channel 31 at a position corresponding to the water outlet channel 31, in this embodiment, the movable member 32 is arranged to move back and forth along the length direction of the water outlet channel 31, and each movable member 32 corresponds to a first elastic member. The two movable members 32 have the same structure and operation principle, and one of the movable members is taken as an example for explanation. The first elastic element acts on the movable element 32 and in the energy storage state, the movable element 32 always has a tendency to move towards the inlet 311 of the corresponding water outlet channel 31. The first elastic member in this embodiment is a first spring 33, and the extending direction of the first spring 33 is along the length direction of the corresponding water outlet channel 31, and two ends of the first spring are respectively in contact with the movable member 32 on the corresponding side and the corresponding inner wall of the connecting pipe 3.

The second spray arm 2 opens with a water inlet channel 21 communicated with the water flow channel 20 towards the first wall plate 2a of the connecting pipe 3, and the two water inlet channels 21 are arranged at intervals along the length direction of the first wall plate 2 a. The second spray arm 2 is provided with a pushing member 22 which partially penetrates out of the water inlet channel 21, and each water inlet channel 21 is provided with a pushing member 22 correspondingly. The installation manner, structure and operation principle of the water inlet channel 21 and the corresponding pushing member 22 are the same, and a set of the water inlet channel 21 and the pushing member 22 is taken as an example for explanation. The pushing member 22 partially protrudes out of the water inlet channel 21, and specifically, the pushing member 22 includes a blocking member 221 for opening or closing the outlet 211 of the water inlet channel 21, and an extending member 222 provided on the blocking member 221, and the extending member 222 protrudes out of the water inlet channel 21 and is located outside the water inlet channel 21. In order to realize the automatic blocking of the inlet of the water inlet channel 21, each pushing element 22 is provided with a second elastic element, the second elastic element acts on the pushing element 22, and the pushing element 22 always has the tendency of moving towards the outlet 211 of the corresponding water inlet channel 21 in the energy storage state. The second elastic member of this embodiment is a second spring 23, and two ends of the second spring 23 are respectively in contact with the corresponding positions of the blocking member 221 and the second spray arm.

When the second spray arm 2 is rotated downward to be in the first state, the water inlet channel 21 located below is installed on the water outlet channel 31 on the side wall of the connection pipe 3, and when the second spray arm 2 is rotated upward to be in the second state, the other water inlet channel 21 is installed on the water outlet channel 31 on the top wall of the connection pipe 3. Specifically, in the first state of the second spray arm 2, the pushing element 22 at the lower water inlet channel 21 pushes the movable element 32 on the side wall of the connecting pipe 3 to move away from the corresponding inlet 311 against the elastic force of the corresponding first spring 33, so as to open the water outlet channel 31 of the side wall of the connecting pipe 3, and at this time, the water outlet channel 31 at the side wall is inserted into the water inlet channel 21 and is communicated with the water inlet channel 21, so as to communicate the water flow channel 20 of the second spray arm 2 with the water outlet channel 30; in order to increase the connection firmness between the side wall of the water outlet channel 31 and the side wall of the water inlet channel 21, a buckle (not shown) is usually arranged at a position adjacent to the water inlet channel 21 of the second spray arm 21, a buckle hole is arranged at a position corresponding to the buckle of the connecting pipe 3, and the connection firmness between the second spray arm 21 and the connecting pipe 3 is increased by the clamping fit between the buckle and the buckle hole; in addition, other fixing modes can be adopted, so long as the connection firmness of the water outlet channel and the water inlet channel can be improved; the outlet of the other water inlet passage 21 is blocked by the corresponding blocking member 221 and the second spring 23, and the inlet of the water outlet passage 31 on the top wall of the connection pipe 3 is also blocked by the corresponding movable member 32 and the first spring.

When the second spray arm 2 is in the second state, the pushing element 22 corresponding to the other water inlet channel 21 pushes the movable element 32 on the top wall of the connecting pipe 3 to move away from the corresponding inlet 311 against the elastic force of the corresponding first spring 33, so as to open the water outlet channel 31 on the top wall of the connecting pipe 3, and at this time, the water outlet channel 31 on the top wall is inserted into the other water inlet channel 21 and is communicated with the water inlet channel 21, so as to realize the communication between the water flow channel 20 of the second spray arm 2 and the water outlet channel 30. The outlets of the other water inlet channels 21 are blocked by the corresponding blocking pieces 221 and the second springs 23, and the inlet of the water outlet channel 31 on the side wall of the connecting pipe 3 is also blocked by the corresponding movable pieces 32 and the first springs. In addition, in order to achieve a sealing connection when the water outlet channel 31 is inserted into the water inlet channel 21, a sealing ring is sleeved outside the water outlet channel 31.

In the above embodiment, the second spray arm 2 can rotate up and down, when the second spray arm 2 is in the first state, the horizontal water flow ejected from the water outlet 201 of the second spray arm 2 is intersected with the water flow ejected upwards from the water spray hole of the first spray arm 1, so that the cleaning effect is improved, in addition, the cup or the bowl can be reversely buckled on the connecting pipe and the second spray arm 2, so that the water outlet 201 on the second spray arm 2 sprays and cleans the inner wall of the cup, the inner wall of the cup is washed by multiple water flows, and in the rotating process of the second spray arm 2 along with the first spray arm 1, the inner wall of the cup can be cleanly washed in a short time, namely, the fixed-point quick cleaning of the deep tableware such as the cup is realized.

The working process of the cleaning machine in the embodiment is as follows:

when the water pumping mechanism 5 works, the water is pumped into the flow channel of the first spray arm 1 and is upwards sprayed out through the water spraying holes of the first spray arm 1, and the first spray arm rotates on the flow guide seat. The first impeller 4 is driven by the motor 51 of the water pumping mechanism 5 to rotate, so that the water in the washing chamber 60 is pumped into the water channel 30 of the connecting pipe 3 through the water inlet 301, flows into the water channel of the second spray arm 2 through the corresponding water outlet channel 31 and the water inlet channel 21 of the second spray arm 2, and finally is sprayed out through the water outlet hole 201.

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 present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent 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), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. A spray system for a cleaning machine comprising:

the spray gun comprises a first spray arm (1), a second spray arm and a spray nozzle, wherein the first spray arm (1) is internally provided with a flow channel (10), and the first spray arm (1) is provided with a spray hole (101) communicated with the flow channel (10);

the second spray arm (2) is positioned on the first spray arm (1), a water flow channel (20) is arranged in the second spray arm, and the second spray arm (2) is provided with a water outlet hole (201) communicated with the water flow channel (20);

it is characterized by also comprising:

the connecting pipe (3) is vertically arranged, the lower end of the connecting pipe is arranged on a top wall plate of the first spray arm (1), the connecting pipe (3) is connected with the second spray arm (2), a water channel (30) communicated with the water flow channel (20) is arranged in the connecting pipe, and a water inlet (301) communicated with the water channel (30) is formed in the position, close to the bottom, of the side wall of the connecting pipe; the second spray arm (2) has a first state arranged along the extending direction of the connecting pipe (3), and the water outlet hole (201) is at least positioned on a wall plate of the second spray arm (2) far away from the connecting pipe (3) when the second spray arm (2) is in the first state.

2. The spray system of claim 1, wherein: the water pump further comprises a first impeller (4) for pumping water entering through the water inlet (301) into the water channel (30), wherein the first impeller (4) is rotatably arranged in the connecting pipe (3) and is positioned at the upstream of the water channel (30) along a fluid flow path.

3. The spray system of claim 2, wherein: the connecting pipe (3) is arranged at the position of the first spray arm (1) close to the center.

4. The spray system of claim 3, wherein: the bottom wall of the first spray arm (1) is provided with a water inlet channel (102), and the first spray arm further comprises a water pumping mechanism (5) for pumping water into the flow channel (10) through the water inlet channel (102).

5. The spray system of claim 4, wherein: the flow channel (10) comprises a water collecting cavity (10a) located in the center and two branch flow channels (10b) arranged on two sides of the water collecting cavity (10a) at intervals along the length direction of the first spray arm (1), the water inlet channel (102) is arranged at the position corresponding to the water collecting cavity (10a) and communicated with the water collecting cavity (10a), the water pumping mechanism (5) comprises a motor (51) and a second impeller (52), an output shaft of the motor (51) extends in the vertical direction, the upper end of the output shaft is located on a top wall plate of the first spray arm (1), the first impeller (4) is installed on the upper end of the output shaft of the motor (51), and the second impeller (52) is installed on the output shaft of the motor (51) and is locally located in the water collecting cavity (10 a).

6. The spray system of any one of claims 1 to 5, wherein: the second spray arm (2) has a second state of being transversely arranged, and the water outlet hole (201) is formed in the top wall plate and/or the bottom wall plate of the second spray arm (2) when the second spray arm (2) is in the second state.

7. The spray system of claim 6, wherein: when the second spray arm (2) is in a second state, the second spray arm (2) and the connecting pipe (3) are integrally in an inverted L shape.

8. The spray system of claim 6, wherein: the top wall and the side wall of the connecting pipe (3) are respectively provided with a water outlet channel (31) which is communicated with the water flowing channel (30) in a fluid mode, the second spraying arm (2) faces the first wall plate (2a) of the connecting pipe (3) and is provided with a water inlet channel (21) which is communicated with the water flowing channel (20), the water inlet channel (21) is installed on the water outlet channel (31) of the side wall of the connecting pipe (3) and is communicated with the water flowing channel (30) through the water outlet channel (31) when the second spraying arm (2) is in the first state, and the water inlet channel (21) is installed on the water outlet channel (31) of the top wall of the connecting pipe (3) and is communicated with the water flowing channel (30) through the water outlet channel (31) when the second spraying arm (2) is in the second state.

9. The spray system of claim 8, wherein: a movable piece (32) which opens or closes an inlet (311) of the water outlet channel (31) is arranged at a position corresponding to the water outlet channel (31) in the connecting pipe (3).

10. The spray system of claim 9, wherein: each movable piece (32) is correspondingly provided with a first elastic piece, the first elastic piece acts on the movable piece (32), and the movable piece (32) always has the trend of moving towards the direction of closing the inlet (311) of the corresponding water outlet channel (31) in the energy storage state.

11. The spray system of claim 10, wherein: the second spraying arm (2) is provided with a pushing piece (22) which partially penetrates out of the water inlet channel (21), when the second spraying arm (2) is in a first state, the pushing piece (22) pushes a movable piece (32) on the side wall of the connecting pipe (3) to overcome the elastic force of a corresponding first elastic piece to move towards the direction away from a corresponding inlet (311) so as to open a corresponding water outlet channel (31), and when the second spraying arm (2) is in a second state, the pushing piece (22) pushes the movable piece (32) on the top wall of the connecting pipe (3) to overcome the elastic force of the corresponding first elastic piece to move towards the direction away from the corresponding inlet (311) so as to open the corresponding water outlet channel (31).

12. The spray system of claim 11, wherein: and a second elastic element acting on the pushing element (22) and making the pushing element (22) always have the tendency of moving towards the direction of closing the outlet (211) of the corresponding water inlet channel (21).

13. The spray system of claim 8, wherein: the two water inlet channels (21) are arranged at intervals along the length direction of the first wall plate (2 a).

14. The spray system of claim 13, wherein: second spray arm (2) can set up with tilting on connecting pipe (3) second spray arm (2) rotate down to be in under the first state, intake passage (21) that are located the below are installed on exhalant canal (31) on the lateral wall of connecting pipe (3) second spray arm (2) upwards rotate to be in under the second state, and another intake passage (21) is installed on exhalant canal (31) on the roof of connecting pipe (3).

15. A cleaning machine having a spraying system according to any one of claims 1 to 14, characterized in that it further comprises a cleaning tank (6) having a washing chamber (60) therein, said washing chamber (60) being provided with a deflector seat (7) adjacent to the bottom, said first spray arm (1) being rotatably arranged above said deflector seat (7), said water inlet (301) being in communication with said washing chamber (60).