CN218684258U

CN218684258U - A spray structure and cleaning machine for cleaning machine

Info

Publication number: CN218684258U
Application number: CN202221694053.4U
Authority: CN
Inventors: 朱文杰; 郑峰; 刁硕
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-03-24
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a spraying structure for a cleaning machine and the cleaning machine, the spraying structure comprises a spraying arm which is in a strip shape, a flow passage is arranged inside the spraying arm, and the spraying arm is provided with a water inlet which is communicated with the flow passage in a fluid way; the spray head is rotatably arranged on the spray arm, the interior of the spray head is hollow and is in fluid communication with a flow channel of the spray arm, and the spray head is provided with a nozzle in fluid communication with the interior of the spray head; the shower nozzle is the bar, the rotation axis of shower nozzle is adjacent the tip that sprays the arm, use the rotation axis of shower nozzle as the border, the shower nozzle divide into first section and second section along its length direction, the length of first section is greater than the length of second section, the shower nozzle can rotate to its first section and extend the tip that sprays the arm, the length that sprays the structure this moment is the longest, it is the biggest to spray the scope, when the tip of first section is not located outside the spray arm, the length that sprays the structure can shorten when being located outside the spray arm than first section, can not produce with the inner wall of the box of cleaning machine and interfere.

Description

A spray structure and cleaning machine for cleaning machine

Technical Field

The utility model relates to a cleaning machine technical field, concretely relates to a spray structure and cleaning machine for cleaning machine.

Background

The spray arm of a dishwasher is the most critical component to achieve the washing performance of the dishwasher. At present, a household dish washing machine drives a spray arm by water pressure, and the spray arm rotates to spray water for washing, but due to the shielding of tableware and the limitation of the structure of the spray arm, spray dead angles easily exist.

In order to solve the problems, the invention discloses a spray arm and a cleaning machine applying the spray arm, which are disclosed in Chinese invention patent application with the patent number of CN201710917473.1 (with the publication number of CN 109589072A), and the cleaning machine comprises a main spray arm, wherein the main spray arm is hollow and is provided with at least two flow dividing channels, and the end surface of the main spray arm is provided with at least two water outlet holes respectively communicated with the corresponding flow dividing channels; and at least two auxiliary spray arms which are respectively rotatably arranged on the corresponding water outlet holes and communicated with the water outlet holes, wherein the auxiliary spray arms are provided with water spray holes and can rotate under the action of water flow sprayed from the water spray holes.

As can be seen from fig. 2, the rotation axis of the secondary spray arm is located in the middle of the main spray arm, so that when the extension directions of the main spray arm and the secondary spray arm are consistent, the length of the secondary spray arm extending out of the main spray arm is fixed, which requires that when the extension directions of the main spray arm and the secondary spray arm are consistent (i.e. when the secondary spray arm extends out of the end of the main spray arm), the overall maximum length of the spray arm cannot be greater than the minimum distance between the two opposite side walls of the tank body, otherwise the spray arm interferes with the side walls of the tank body, which results in the overall maximum length of the spray arm being shorter and the spray range being limited.

As can be seen from fig. 5, the inner space of the tank body is cubic, and the spraying arm of the patent has no longer overall maximum length than the minimum distance between the two opposite side walls of the tank body, so that the sprayed water flow is likely to not flush the corner of the tank body. Therefore, the corner area of the groove body is difficult to clean due to the length limitation of the spray arm and the blocking of tableware, and only the corner area can be indirectly cleaned by water drops dropping from the door body, so that secondary pollution is serious, and the secondary pollution at the corner area is serious; in addition, because the space in the tank body is small, the corner area of the tank body is covered by tableware, water columns generated by the spray arms cannot reach a high height for cleaning, and secondary pollution at the corner area is serious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides one kind can not produce the structure that sprays that is used for the cleaning machine of interfering with the inner chamber lateral wall of cleaning machine.

The utility model discloses the second technical problem that will solve is to prior art's current situation, provides one kind and can carry out the structure that sprays that is used for the cleaning machine that leads to the removal orbit that sprays the structure.

The utility model discloses the third technical problem that will solve is to prior art's current situation, provides one kind and can carry out abluent using the above-mentioned cleaning machine that sprays the structure to the bight of cleaning machine.

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

The spraying arm is strip-shaped, a flow channel is formed in the spraying arm, and water inlets which are in fluid communication with the flow channel are formed in the spraying arm;

the spray head is rotatably arranged on the spray arm, the interior of the spray head is hollow and is in fluid communication with a flow channel of the spray arm, and the spray head is provided with a nozzle in fluid communication with the interior of the spray head;

the method is characterized in that: the shower nozzle is the bar, the axis of rotation of shower nozzle is close to the tip of spray arm, with the axis of rotation of shower nozzle is the boundary, the shower nozzle divide into first section and second section along its length direction, the length of first section is greater than the length of second section, the shower nozzle can rotate to its first section and extend the tip of spray arm.

In order to allow a larger spray range even if the length of the spray structure is not at its maximum, the second section of the spray head can also extend beyond the end of the spray arm. The end part of the second section is positioned outside the spray arm, at the moment, although the length of the spray structure is not the longest, the spray range of the spray structure can be improved to a certain extent, and at the moment, the spray structure cannot interfere with the side wall of the inner cavity of the box body.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the spray arm is characterized in that an annular guide rail is fixedly arranged on one side of the spray arm, the guide rail is enclosed into an annular area, the guide rail is arranged at a position close to the end part of the first section of the spray head in a penetrating mode, the spray head can slide along the guide rail, the guide rail is locally arched towards the direction far away from the central line of the annular area to form an outward protruding part, and the end part of the spray arm is extended out of the first section in the state that the spray head moves to the outward protruding part.

Since the shower structure is usually correspondingly arranged in the inner cavity in the shape of a cube, there are four outward protrusions.

In order to prevent the spray structure from interfering with the side wall of the inner cavity, the guide rail is provided with a concave part which is concave towards the central line of the annular area of the guide rail between two adjacent external protrusions. Therefore, when the spraying structure rotates to the end part facing the side wall of the inner cavity, the end part of the first section of the spray head cannot face the side wall of the inner cavity due to the guiding effect of the concave part, and the length of the spraying structure is not in the longest state and cannot interfere with the side wall of the inner cavity.

In order to facilitate the guide rail to penetrate through the spray head and to enable the guide rail to be displaced between the spray head and the spray head, two guide columns which are arranged oppositely are arranged on the wall surface of the spray head, which is back to the spray arm, a through hole for the guide rail to pass through is formed in a hole between the two guide columns, each guide column is rotatably provided with a roller, and the guide rail is clamped between the two rollers. The arrangement of the roller can reduce the friction force between the guide rail and the spray head.

In order to limit the guide rail in the axial direction of the guide post, a circle of groove is formed in the peripheral wall of each roller, and the local wall surface of the guide rail is accommodated in the groove on the corresponding side. The groove plays a role in positioning the guide rail.

For the spraying effect and range, the number of the spray heads is two, and the spray heads are respectively and correspondingly arranged at the two end parts of the spraying arm.

In order to further improve the spraying effect of the spraying structure, the spraying arm is provided with a spraying hole which is in fluid communication with the flow channel of the spraying arm.

In order to facilitate the installation of the spray head on the spray arm, the spray arm is provided with a mounting hole, and the spray head comprises

The first end of the insertion part is provided with at least two lateral outward protrusions arranged at intervals along the circumferential direction on the peripheral wall of the insertion part, the insertion part can be inserted into the mounting hole by extruding the lateral outward protrusions inwards, and the lateral outward protrusions reversely buckle the inner wall surface of the corresponding spray arm in the insertion state;

the water collecting part is hollow and is in fluid communication with the other end of the inserting part, and the water collecting part is provided with the nozzle in fluid communication with the inside of the water collecting part.

The insertion part is inserted into the spraying arm from the mounting hole, and in the insertion process, the lateral outward convex parts deform due to the extrusion of the mounting hole on the lateral outward convex parts, so that the insertion of the insertion part cannot be influenced; after the lateral outward convex part enters the interior of the spray arm, the lateral outward convex part is restored to the original shape and is abutted against the inner wall surface of the spray arm, the installation is convenient, and other tools are not needed.

In order to facilitate the insertion of the insertion part in the spray arm and not influence the rotation of the spray head relative to the spray arm, the outer diameter of the insertion part is smaller than the diameter of the mounting hole, and the outer wall surface of the lateral outward convex part is a conical surface gradually reducing in diameter along the insertion direction of the insertion part.

The utility model provides a technical scheme that above-mentioned third technical problem adopted does: the utility model provides an use cleaning machine of above-mentioned structure that sprays which characterized in that: the spraying structure is arranged in the inner cavity, the spraying arm can rotate relative to the inner cavity, the inner cavity is in a cubic shape, the guide rail is fixedly arranged in the inner cavity, and the four outer protruding parts of the guide rail are respectively arranged corresponding to the four corners of the box body.

In order to place tableware or vegetables and fruits, a storage rack for placing the tableware or the vegetables and fruits is further arranged in the box body, the spraying arm is arranged below the storage rack, and the storage rack is of a hollow structure formed by a plurality of frame bars so as to drain water on the tableware or the vegetables and fruits; in order to facilitate the positioning of the guide rail, at least one of the frame strips at the bottom of the storage rack is annular, a plurality of stop blocks are arranged on the guide rail along the circumferential interval of the guide rail, the stop blocks are all abutted to the outer side or the inner side of the annular frame strip, or part of the stop blocks are abutted to the outer side of the annular frame strip, and the rest of the stop blocks are abutted to the inner side of the annular frame strip. With the help of the structure of supporter like this, only need set up again on the guide rail several dogs can, simple structure to support the dog and annular frame strip mutually, can realize the installation, the simple operation.

Compared with the prior art, the utility model has the advantages that: 1. the utility model discloses a with the rotation axis eccentric settings of shower nozzle (rotation axis does not set up the middle part at the shower nozzle), the distance of the both ends of shower nozzle apart from its rotation axis is different like this. Because the length of the first section is greater than that of the second section, and the rotating axis of the spray head is close to the end part of the spray arm, the whole length of the spray structure when the first section is positioned outside the end part of the spray arm is greater than that when the second section is positioned outside the end part of the spray arm, the spray range is large, the spray structure can be adapted to the inner cavity of the cleaning machine, for example, when the spray arm rotates to the corner part of the inner cavity of the box body of the cleaning machine, the first section extends out of the end part of the spray arm, the whole length of the spray structure is longest, the spray range is largest, and the corner part of the cleaning machine can be cleaned; when the end part of the first section is not positioned outside the spray arm, the length of the spray structure is shortened compared with that when the first section is positioned outside the spray arm, and interference with the inner wall of a box body of the cleaning machine is avoided;

2. the utility model discloses a set up the guide rail, the shower nozzle slides along the guide rail, can lead to the rotation orbit of shower nozzle like this, through facing the angular part of inner chamber with the evagination of guide rail, when the first section of shower nozzle rotates to the evagination like this, the spray structure rotates to the angular part facing to the inner chamber, the whole length of the spray structure is the longest, can avoid the sheltering from of tableware at this moment, wash the angular part department of cleaning machine; when the first section of the spray head is not rotated to the outer protruding part, the spray structure does not face the corner part of the inner cavity, and the whole length of the spray structure is not the longest and does not interfere with the side wall of the inner cavity of the box body.

Drawings

Fig. 1 is a schematic structural view of a shelf and a spraying structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view of the shelf of FIG. 1 with the shelf removed;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is an enlarged view of FIG. 4 at A;

FIG. 6 is a schematic view of the showerhead of FIG. 5;

fig. 7 is a schematic structural view in another direction of fig. 6.

Detailed Description

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

As shown in fig. 1 to 7, the cleaning machine of the preferred embodiment includes a box (not shown), a rack 3, a spraying structure a and a guide rail 4, wherein the rack 3 can be used for placing the objects to be cleaned, such as the tableware or the vegetables and fruits, and the rack 3 is a hollow structure formed by a plurality of frame bars 31, so as to drain the water on the tableware or the vegetables and fruits; of course, the washing machine further comprises a water pumping mechanism and other components, which can adopt the existing structure and are not described in detail herein.

As shown in fig. 3 to 7, the spray structure a includes a spray arm 1 and a nozzle 2, the spray arm 1 is in a strip shape, a flow channel 11 extending along a length direction of the spray arm 1 is formed inside the spray arm 1, and the spray arm 1 is provided with a water inlet 12 and a spray hole 13 both in fluid communication with the flow channel 11. Of course, the spray arm 1 may not be provided with the spray holes 13.

The spray head 2 is rotatably arranged on the spray arm 1, the interior of the spray head 2 is hollow and is in fluid communication with the flow channel 11 of the spray arm 1, and the spray head 2 is provided with a nozzle 21 in fluid communication with the interior thereof. In this embodiment, two spray heads 2 are provided, which are respectively disposed at two end portions of the spray arm 1, and the spray heads 2 are in the shape of a bar, and a plurality of spray nozzles 21 are provided and spaced apart from each other along the length direction of the spray heads 2.

As shown in fig. 5, the rotation axis a of the nozzle 2 (i.e. the axis of the insertion portion 27 hereinafter) is adjacent to the end of the spray arm 1, and is defined by the rotation axis a of the nozzle 2, the nozzle 2 is divided into a first section 22 and a second section 23 along the length direction thereof, the length of the first section 22 is greater than that of the second section 23, when the nozzle 2 rotates to the extent that the first section 22 or the second section 23 extends out of the end of the spray arm 1, the extension direction of the nozzle 2 is substantially the same as that of the spray arm 1, the spray structure a is in a bar shape at this time, and when the first section 22 is located outside the end of the spray arm 1, the length of the spray structure a is greater than that when the second section 23 is located outside the end of the spray arm 1.

The guide rail 4 is located on one side of the spray arm 1, the guide rail 4 is annular and encloses an annular area 40 (the annular shape is not limited to that the guide rail 4 is circular, and the guide rail 4 enables the movement tracks of the spray head 2 to coincide, that is, the starting point and the end point can coincide, the annular shape can be circular, rectangular, square, and the like), two oppositely-arranged guide posts 24 are arranged on the wall surface of the spray head 2, which faces away from the spray arm 1, a through hole 25 for the guide rail 4 to pass through is formed in a gap between the two guide posts 24, so that the guide rail 4 is arranged at a position close to the end part of the first section 22 of the spray head 2 in a penetrating manner, the spray head 2 can slide along the guide rail 4, each guide post 24 is rotatably provided with a roller 241, the guide rail 4 is clamped between the two rollers 241, a circle of grooves 2411 is arranged on the outer peripheral wall of each roller 241, and a local wall surface of the guide rail 4 is accommodated in the grooves 2411 on the corresponding side.

The guide rail 4 is partially curved in a direction away from the center line of the annular region 40 to form an outward protruding portion 41, the inner cavity of the casing of the cleaning machine is cube-shaped, four outward protruding portions 41 are provided corresponding to four corners of the inner cavity, a recessed portion 42 is formed between two adjacent outward protruding portions 41 of the guide rail 4, and the recessed portion 42 is recessed toward the center line of the annular region 40 of the guide rail 4. In this embodiment, the guide rail 4 is rectangular, four corners of the guide rail 4 are protruded toward a direction away from the center line thereof (because the distance of the diagonal line is longest, the distance of the four corners of the guide rail 4 from the center line thereof is farthest with respect to the side of the guide rail 4), four corners of the guide rail 4, that is, the protruding portions 41, are disposed to correspond to four corners of the box body, respectively, and the middle portions of the respective sides of the guide rail 4 are recessed toward the center line of the guide rail 4 to form the recessed portions 42.

When the spray head 2 moves to the external protrusion 41, the first section 22 is located outside the end part of the spray arm 1, the extending direction of the spray head 2 is basically consistent with the extending direction of the spray arm 1, the length of the spray structure A is the longest, the end part of the first section 22 faces the corner part of the box body, and the water column sprayed by the spray nozzle 21 faces the corner part of the box body, so that the water column cannot be shielded by the storage rack 3, and the corner part of the box body can be washed.

When the spraying structure A rotates to the position that the second section 23 is positioned outside the end part of the spraying arm 1, the length of the spraying structure A is not in the longest state and cannot interfere with the side wall of the inner cavity.

The guide rail 4 is fixed in the inner cavity, as shown in fig. 1, at least one of the frame strips 31 at the bottom of the shelf 3 is annular, a plurality of stoppers 43 are arranged on the guide rail 4 along the circumferential direction thereof at intervals, the plurality of stoppers 43 are all abutted against the outer side or the inner side of the annular frame strip 31, or part of the stoppers 43 are abutted against the outer side of the annular frame strip 31, and the rest of the stoppers 43 are abutted against the inner side of the annular frame strip 31. With the help of supporter 3's structure like this, only need set up again on guide rail 4 several dog 43 can, simple structure to support dog 43 and annular frame strip 31 mutually, can realize the installation, the simple operation.

The spray head 2 and the spray holes 13 are both provided on a first wall surface 14 (upper end surface in the direction of fig. 4) of the spray arm 1, the water inlet 12 is provided on a second wall surface 15 (lower end surface in the direction of fig. 4) opposite to the first wall surface 14 of the spray arm 1, and the water inlet 12 is provided adjacent to the middle portion of the spray arm 1. The spray arm 1 can be rotatably arranged in the inner cavity of the box body and can be arranged at the top or the bottom of the box body, the spray arm 1 is arranged on one side of the commodity shelf 3, and the spray holes 13 and the spray nozzles 21 are both towards the position of the commodity shelf 3.

Under the action of the water pumping mechanism, water enters the flow channel 11 of the spray arm 1 and is sprayed out from the spray holes 13, and under the action of water pressure, the spray arm 1 can rotate; the water in the flow passage 11 flows into the interior of the head 2 and flows out from the nozzles 21, and the head 2 is also rotated by the water pressure, as described in the patent publication in the background art.

As shown in fig. 5, the spray head 2 is rotatably mounted on the spray arm 1 by: the spray arm 1 is provided with a mounting hole 16 communicated with a flow channel 11 on the spray arm, the longitudinal section of the spray head 2 is T-shaped, and the spray head comprises a water collecting part 26 and an insertion part 27 which are integrally connected, wherein the water collecting part 26 is hollow, a spray nozzle 21 is arranged on the water collecting part 26 and is communicated with the water collecting part 26, the insertion part 27 is tubular, the outer diameter of the insertion part 27 is smaller than the diameter of the mounting hole 16, the first end of the insertion part 27 extends into the flow channel 11 of the spray arm from the mounting hole 16, the second end of the insertion part 27 is connected with the water collecting part 26, the insertion part 27 is communicated with the water collecting part 26 in a fluid mode, and the insertion part 27 can rotate around the axis of the insertion part 27.

The first end of the insertion part 27 has at least two lateral protrusions 28 arranged at intervals in the circumferential direction on the outer circumferential wall thereof, the outer wall surface of the lateral protrusions 28 is a tapered surface 281 which gradually decreases in diameter in the insertion direction of the insertion part 27, and the insertion part 27 is inserted into the mounting hole 16 by pressing the lateral protrusions 28 inward; specifically, when the lateral outward protrusion 28 passes through the mounting hole 16, it is pressed by the wall surface of the mounting hole 16 and deformed toward the center line of the insertion portion 27, so as to pass through the mounting hole 16 smoothly.

After the lateral outward protrusions 28 pass through the mounting holes 16, the insertion portions 27 are inserted into the mounting holes 16, and the lateral outward protrusions 28 are reversely engaged with the inner wall surfaces of the corresponding shower arms 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered limiting, as "upper", "lower", and the like are not necessarily limited to directions opposite to or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter, referred to as a first portion and a second portion) in a unified manner, i.e., a fluid (gas, liquid or a mixture thereof) 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 member, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims

1. A spray structure for a cleaning machine, comprising

The spraying arm (1) is strip-shaped, a flow channel (11) is formed in the spraying arm (1), and a water inlet (12) which is in fluid communication with the flow channel (11) is formed in the spraying arm (1);

the spray head (2) is rotatably arranged on the spray arm (1), the spray head (2) is hollow and is communicated with a flow channel (11) of the spray arm (1) in a fluid manner, and the spray head (2) is provided with a nozzle (21) communicated with the interior of the spray head in a fluid manner;

the method is characterized in that: shower nozzle (2) are the bar, the tip that the axis of rotation of shower nozzle (2) is close to spray arm (1), with the axis of rotation of shower nozzle (2) is the boundary, shower nozzle (2) divide into first section (22) and second section (23) along its length direction, the length of first section (22) is greater than the length of second section (23), shower nozzle (2) can rotate to its first section (22) and extend the tip that spray arm (1).

2. The spray structure of claim 1, wherein: the second section (23) of the spray head (2) can also extend out of the end of the spray arm (1).

3. The spray structure of claim 1, wherein: the spray arm is characterized in that an annular guide rail (4) is fixedly arranged on one side of the spray arm (1), the guide rail (4) is surrounded to form an annular area (40), the guide rail (4) penetrates through the position close to the end part of a first section (22) of the spray head (2), the spray head (2) can slide along the guide rail (4), the guide rail (4) is locally arched towards the direction of the central line far away from the annular area (40) to form an outer protruding part (41), and the first section (22) extends out of the end part of the spray arm (1) in the state that the spray head (2) moves to the outer protruding part (41).

4. The spray structure of claim 3, wherein: the number of the outward protrusions (41) is four.

5. The spray structure of claim 4, wherein: the guide rail (4) is provided with a recessed part (42) recessed toward the center line of the annular region (40) of the guide rail (4) between two adjacent outward protruding parts (41).

6. The spray structure of claim 3, wherein: the wall surface of the spray head (2) back to the spray arm (1) is provided with two oppositely arranged guide columns (24), a through hole (25) for the guide rail (4) to pass through is formed in a gap between the two guide columns (24), each guide column (24) is rotatably provided with a roller (241), and the guide rail (4) is clamped between the two rollers (241).

7. The spray structure of claim 6, wherein: the peripheral wall of each roller (241) is provided with a circle of groove (2411), and the local wall surface of the guide rail (4) is accommodated in the groove (2411) on the corresponding side.

8. The spray structure according to any one of claims 1 to 7, characterized in that: the number of the spray heads (2) is two, and the two spray heads are respectively and correspondingly arranged at the two end parts of the spray arm (1).

9. The spray structure according to any one of claims 1 to 7, characterized in that: and the spray arm (1) is provided with a spray hole (13) which is in fluid communication with the flow channel (11).

10. The spray structure according to any one of claims 1 to 7, characterized in that: the spray arm (1) is provided with a mounting hole (16) which is in fluid communication with the flow channel (11), and the spray head (2) comprises

The insertion part (27) is tubular, a first end of the insertion part (27) extends into the flow channel (11) of the spray arm (1) from the mounting hole (16), the insertion part (27) can rotate around the axis of the insertion part, the first end of the insertion part (27) is provided with at least two lateral outward protrusions (28) which are arranged at intervals along the circumferential direction on the outer circumferential wall of the insertion part, the insertion part (27) can be inserted into the mounting hole (16) by pressing the lateral outward protrusions (28) inwards, and in the insertion state, the lateral outward protrusions (28) reversely buckle the inner wall surface of the corresponding spray arm (1);

the water collecting part (26) is hollow and is in fluid communication with the second end of the inserting part (27), and the water collecting part (26) is provided with the nozzle (21) which is in fluid communication with the inside of the water collecting part.

11. The spray structure of claim 10, wherein: the outer diameter of the insertion part (27) is smaller than the diameter of the mounting hole (16), and the outer wall surface of the lateral convex part (28) is a conical surface (281) which gradually reduces in diameter along the insertion direction of the insertion part (27).

12. A cleaning machine using the spray structure of any one of claims 3 to 11, characterized in that: the spraying structure is arranged in the inner cavity, the spraying arm (1) can rotate relative to the inner cavity, the inner cavity is cubic, the guide rail (4) is fixedly arranged in the inner cavity, and four outer protruding parts (41) of the guide rail (4) are correspondingly arranged at four corners of the box body respectively.

13. The cleaning machine of claim 12, wherein: still be equipped with supporter (3) that are used for placing tableware or vegetables and fruits in the box, the below of supporter (3) is located in spray arm (1), supporter (3) are the hollow out construction who constitutes by many frame strips (31), and at least one of them frame strip (31) of the bottom of supporter (3) are the annular, set up a plurality of dog (43) along its circumference interval on guide rail (4), a plurality of dog (43) all support and keep out in annular frame strip (31) outside or inboard, perhaps partial dog (43) support and keep out in annular frame strip (31) outside, and all the other dog (43) support and keep out in annular frame strip (31) inboard.