Spraying arm mechanism

Abstract

The utility model relates to the technical field of dish washing machines, in particular to a spraying arm mechanism which comprises a connector, a first spraying arm and a second spraying arm, the connector is provided with a first water supply part and a second water supply part in the length direction, the connector is sleeved with the first spraying arm and the second spraying arm, the first spraying arm is provided with a first water containing cavity, and the second spraying arm is provided with a second water containing cavity. The first spraying arm is provided with a first water containing cavity which is communicated with the first water conveying part, and the second spraying arm is provided with a second water containing cavity which is communicated with the second water conveying part; therefore, water in the connector can be supplied to the first spraying arm and the second spraying arm from the first water supply part and the second water supply part respectively at the same time, so that the first water containing cavity and the second water containing cavity can be almost filled with water at the same time, then tableware is cleaned, the time difference when the first water containing cavity and the second water containing cavity are filled with water is greatly reduced, and the tableware cleaning efficiency is improved. And the cleaning efficiency is greatly improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of dishwashers, and in particular to a spray arm mechanism. Background Art

[0002] With the continuous improvement of people's living standards, household dishwashers have gradually entered many households, replacing the tedious labor of manual dishwashing. A variety of dishwasher models are available on the market, including front-loading, sink-type, drawer-type, and small table-top models. Their water flow systems are generally similar, primarily using rotating spray arms to directly or indirectly spray high-temperature, high-pressure water onto the dishes in the basket. This system also combines mechanical rinsing through the water's divergence, reflection, and splashing, supplemented by the chemical effects of detergent wetting, decomposition, soaking, and expansion, and the dissolution and thermal shock effects of hot water, ensuring a thorough cleaning of the dishes.

[0003] The spray arm mechanism is an important component of the dishwasher. Currently, household dishwashers on the market generally have two layers of bowl baskets in the inner tank of the dishwasher, and the inner tank is also equipped with an upper spray arm, a middle spray arm and a lower spray arm. Patent No. 202122453014.7 discloses a double-layer spray arm assembly and a dishwasher thereof. The patent is achieved by arranging the second spray arm and the first spray arm in an upper and lower interval, and fastening the second spray arm to the lower end of the connecting block. The first spray arm is rotatably connected to the lower end of the connecting block through a first rotating shaft, so that the second spray arm can rotate horizontally relative to the first spray arm. On the one hand, a double-layer spray arm effect is formed, and the diversity of rotation is achieved, thereby forming a spray washing effect with more direct spray positions and more diverse spray angles, thereby improving washing efficiency. When the water inlet module supplies water to the double-layer spray arm assembly, the water first enters the first spray arm located at the bottom. After the inner cavity of the first spray arm is filled with water, the excess water will continue to fill the inner cavity of the second spray arm upwards. This water inlet method causes a long time difference between the first spray arm and the second spray arm when spraying, resulting in low cleaning efficiency of the spray arm assembly. Utility Model Content

[0004] In view of the deficiencies or problems existing in the prior art, the present disclosure provides a spray arm mechanism with high cleaning efficiency.

[0005] The technical solution adopted by the present disclosure to solve the above-mentioned technical problems is: a spray arm mechanism, including a connecting head, a first spray arm and a second spray arm, the connecting head is respectively provided with a first water supply part and a second water supply part along the length direction, the first spray arm and the second spray arm are sleeved on the outside of the connecting head, the first spray arm is provided with a first water containing chamber, the first water containing chamber is connected to the first water supply part, the second spray arm is provided with a second water containing chamber, the second water containing chamber is connected to the second water supply part.

[0006] As a preferred embodiment, the connecting head is provided with a first bearing and a second bearing, the first bearing is arranged between the first spray arm and the second spray arm, the second bearing is arranged below the second spray arm, and the upper end of the connecting head is detachably connected to a limiting sleeve, and the limiting sleeve is used to axially limit the first spray arm.

[0007] As a preferred embodiment, the connecting head is connected to a water supply pipe, and the connecting head is communicated with the water supply pipe. The water supply pipe is used to connect to an external pipeline. The water flowing through the water supply pipe flows from the first water supply part to the first spray arm, and from the second water supply part to the second spray arm.

[0008] As a preferred embodiment, the first spray arm includes a first interface connected to the first water holding chamber, and the first interface is mounted on the outside of the first water supply part. The second spray arm includes a second interface connected to the second water holding chamber, and the second interface is mounted on the outside of the second water supply part.

[0009] As a preferred embodiment, the first water supply portion comprises at least two first water supply holes, each located at the same height; the second water supply portion comprises at least two second water supply holes, each located at the same height. Each first water supply hole is located at the same height, so that all first water supply holes are directly opposite the first interface, thereby allowing water from the water supply pipe to smoothly enter the first water storage chamber from the first water supply portion; each second water supply hole is located at the same height, so that all second water supply holes are directly opposite the second interface, thereby allowing water from the water supply pipe to smoothly enter the second water storage chamber from the second water supply portion.

[0010] As a preferred embodiment, the first spray arm includes a first upper shell and a first lower shell, the first water holding chamber is formed by the first upper shell and the first lower shell covering each other, a plurality of first water spray holes are provided on the first upper shell, and two first through holes are provided on the first lower shell.

[0011] As a preferred embodiment, the two first through holes are arranged along the length direction of the first lower shell, and the two first through holes are respectively provided at two ends of the first lower shell, and the two first through holes are oriented in opposite directions.

[0012] The first spray arm is used to wash the dishes in the bowl basket above it. A first water spray hole is provided on the first upper shell, allowing water to spray upwards. Two first through holes are located on the first lower shell, and water is sprayed out through the two first through holes. These two first through holes generate a force when spraying water, which propels the first spray arm to rotate. The two first through holes are oriented in opposite directions, so that when the two first through holes spray water in two different directions, the forces generated by them can coordinate and cause the first spray arm to rotate faster in a clockwise or counterclockwise direction.

[0013] As a preferred embodiment, the second spray arm includes a second upper shell and a second lower shell, the second water holding chamber is formed by the second upper shell and the second lower shell covering each other, a plurality of second water spray holes are provided on the second lower shell, and two second through holes are provided on the second upper shell.

[0014] As a preferred embodiment, the two second through holes are arranged along the length direction of the second upper shell, and the two second through holes are respectively provided at two ends of the second upper shell, and the two second through holes are oriented in opposite directions.

[0015] The second spray arm is used to wash the dishes in the bowl basket below it. A second water spray hole is provided on the second lower housing, allowing water to spray downward. Two second through holes are located on the second upper housing, and water is sprayed out through these two second through holes. These two second through holes generate a force when spraying water, which drives the second spray arm to rotate. The two second through holes are arranged in opposite directions. This arrangement allows the forces generated by the two second through holes, when spraying water in two different directions, to coordinate and cause the second spray arm to rotate faster in either a clockwise or counterclockwise direction.

[0016] As a preferred embodiment, the limit sleeve includes a cover plate, which has an annular first connecting portion and a plug extending toward the direction of the first spray arm. The annular first connecting portion is arranged around the plug, and the connecting head is provided with a second connecting portion, and the first connecting portion is used to connect to the second connecting portion.

[0017] In some embodiments, the first connecting portion is provided with a first clamping member, the second connecting portion is a second clamping member, and the first clamping member and the second clamping member cooperate to connect the limiting sleeve and the connector.

[0018] In some embodiments, an internal thread is provided on the inner peripheral wall of the first connecting portion, and the second connecting portion is an external thread, and the internal thread and the external thread are screwed together to connect the limiting sleeve and the connector.

[0019] As a preferred embodiment, the cover plate has a first annular protrusion extending in the direction of the first spray arm, a first gap is provided between the first annular protrusion and the first connecting portion, a plurality of reinforcing ribs are provided in the first gap, and the outer peripheral wall of the first annular protrusion is provided with a structure for enhancing friction.

[0020] The provision of the first gap saves material. Without the first gap, the first annular protrusion and the first connecting portion are integral and have a thicker wall, which not only increases the overall weight of the limit sleeve but also increases material costs. A reinforcing rib is provided in the first gap to connect the first annular protrusion and the first connecting portion, effectively strengthening the structural strength of the limit sleeve. A friction-enhancing structure is provided on the outer peripheral wall of the first annular protrusion to increase the friction between the hand and the limit sleeve, facilitating installation or removal of the limit sleeve.

[0021] Compared with existing products, since the connecting head is respectively provided with the first water supply part and the second water supply part along the length direction, the first water holding chamber is connected with the first water supply part, and the second water holding chamber is connected with the second water supply part, the water in the connecting head can be simultaneously delivered to the first spray arm and the second spray arm by the first water supply part and the second water supply part, respectively, so that the first water holding chamber and the second water holding chamber can be filled with water almost at the same time, and then the tableware is washed, which greatly reduces the time difference between the water filling the first water holding chamber and the second water holding chamber, and greatly improves the washing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. In addition, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the described objects and may contain exaggerated representations. The drawings are not necessarily drawn to scale.

[0023] Figure 1 This is one of the structural diagrams of a spray arm mechanism disclosed in the present invention;

[0024] Figure 2 This disclosure Figure 1 A partial enlarged view of point A in the middle;

[0025] Figure 3 is a cross-sectional view of a spray arm mechanism disclosed herein;

[0026] Figure 4 This is a structural diagram of the connection between the connector disclosed herein and a water supply pipe;

[0027] Figure 5 This is the second structural diagram of a spray arm mechanism disclosed in the present invention;

[0028] Figure 6 This is the third structural diagram of a spray arm mechanism disclosed in the present invention;

[0029] Figure 7 This is one of the structural diagrams of the disclosed limit sleeve;

[0030] Figure 8 This is the second structural diagram of the limit sleeve disclosed in the present invention.

[0031] Description of reference numerals:

[0032] 1. First spray arm; 11. First upper shell; 111. First water spray hole; 12. First lower shell; 121. First through hole; 2. Second spray arm; 21. Second upper shell; 211. Second through hole; 22. Second lower shell; 221. Second water spray hole; 3. Limit sleeve; 31. Cover plate; 32. First connecting part; 33. Plug; 34. First annular protrusion; 35. First gap; 36. Reinforcing rib; 4. Water supply pipe; 41. First positioning buckle; 42. Arc rib; 5. Connector; 51. Second positioning buckle; 52. Annular plate; 521. Rib structure; 53. First water supply hole; 54. Second water supply hole; 55. Second connecting part; 6. First bearing; 7. Second bearing. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is described in detail, clearly, and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0034] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0035] Please see Figure 4 and Figure 6 As shown, the present disclosure provides a spray arm mechanism, including a connecting head 5, a first spray arm 1, and a second spray arm 2. The connecting head 5 is provided with a first water supply portion and a second water supply portion respectively along the length direction. The first water supply portion is arranged above the second water supply portion. The first spray arm 1 and the second spray arm 2 are sleeved on the outside of the connecting head 5. The first spray arm 1 is provided with a first water storage chamber, which is connected to the first water supply portion. The second spray arm 2 is provided with a second water storage chamber, which is connected to the second water supply portion. In this way, the water in the connecting head 5 can be simultaneously supplied to the first spray arm 1 and the second spray arm 2 by the first water supply portion and the second water supply portion, respectively, so that the first water storage chamber and the second water storage chamber can be filled with water almost at the same time, and then the tableware can be washed, greatly reducing the time difference between the water filling the first water storage chamber and the second water storage chamber, and greatly improving the washing efficiency.

[0036] For further information, please also refer to Figure 3 As shown, a first bearing 6 and a second bearing 7 are provided on the connecting head 5. The first bearing 6 is arranged between the first spray arm 1 and the second spray arm 2, and the second bearing 7 is arranged below the second spray arm 2. The upper end of the connecting head 5 is detachably connected to a limiting sleeve 3. The limiting sleeve 3 is used to axially limit the first spray arm 1 to prevent the first spray arm 1 from moving upward or downward when rotating, thereby making the first spray arm 1 and the second spray arm 2 more stable during operation. In addition, since the first bearing 6 is arranged between the first spray arm 1 and the second spray arm 2, the second bearing 7 is arranged below the second spray arm 2, the first spray arm 1 is located between the limit sleeve 3 and the first bearing 6, when the first spray arm 1 is working, the first spray arm 1 rotates on the first bearing 6, and the second spray arm 2 is located between the first bearing 6 and the second bearing 7. When the second spray arm 2 is working, it rotates on the second bearing 7, so that the first spray arm 1 and the second spray arm 2 are more silky and smooth when rotating; in this application, the connection structure between the first spray arm 1 and the second spray arm 2 and the connecting head 5 is simpler, and fewer bearings and parts are used, which not only saves costs, but also can achieve quick installation and quick disassembly, and facilitates later maintenance.

[0037] Furthermore, the connector 5 is connected to a water supply pipe 4, and the connector 5 is in communication with the water supply pipe 4. The water supply pipe 4 is arranged approximately perpendicular to the connector 5. The water supply pipe 4 is used to connect to an external pipeline. Water from the external pipeline enters the connector 5 through the water supply pipe 4, and then enters the first spray arm 1 and the second spray arm 2. The connector 5 is provided with a first water supply portion and a second water supply portion. The first spray arm 1 is located at the position of the first water supply portion, and the second spray arm 2 is located at the position of the second water supply portion. The water in the water supply pipe 4 flows from the first water supply portion to the first spray arm 1, and from the second water supply portion to the second spray arm 2. In this way, a single water supply pipe 4 can simultaneously supply water to the first spray arm 1 and the second spray arm 2, so that the first spray arm 1 and the second spray arm 2 can wash the dishes almost simultaneously.

[0038] Please see Figure 3 and Figure 4 As shown, further, the first spray arm 1 includes a first interface connected to the first water holding chamber, and the first interface is mounted on the outside of the first water delivery part. The second spray arm 2 includes a second interface connected to the second water holding chamber, and the second interface is mounted on the outside of the second water delivery part, so that the water in the water delivery pipe 4 can smoothly and quickly enter the first water holding chamber and the second water holding chamber.

[0039] Furthermore, the first water supply portion comprises at least two first water supply holes 53, each located at the same height; and the second water supply portion comprises at least two second water supply holes 54, each located at the same height. Each first water supply hole 53 is located at the same height, so that all first water supply holes 53 are directly opposite the first interface, thereby allowing water from the water supply pipe 4 to smoothly enter the first water storage chamber from the first water supply portion; each second water supply hole 54 is located at the same height, so that all second water supply holes 54 are directly opposite the second interface, thereby allowing water from the water supply pipe 4 to smoothly enter the second water storage chamber from the second water supply portion. After the water from the water supply pipe 4 enters the connecting head 5, the water first passes through the second water supply hole 54 located below. Part of the water enters the second water holding chamber from the second water supply hole 54, and part of the water continues upward through the first water supply hole 53 and enters the first water holding chamber from the first water supply hole 53. Since the height difference between the first water supply hole 53 and the second water supply hole 54 is small, the water flowing through the first water supply hole 53 can quickly enter the first water holding chamber. Therefore, it can be considered that the first water holding chamber and the second water holding chamber are filled with water almost at the same time and spray water at the same time to wash the tableware, thereby making the spray arm mechanism have a higher cleaning efficiency.

[0040] like Figure 1 and Figure 5 As shown, in one embodiment of the present disclosure, the first spray arm 1 includes a first upper shell 11 and a first lower shell 12. The first water holding chamber is formed by the first upper shell 11 and the first lower shell 12 covering each other. The first upper shell 11 is provided with a plurality of first water spray holes 111. Water in the first water holding chamber is sprayed out through the first water spray holes 111 to clean the dishes. The first lower shell 12 is provided with two first through holes 121. Specifically, the two first through holes 121 are arranged along the length of the first lower shell 12. The two first through holes 121 are respectively provided at the two ends of the first lower shell 12, and the two first through holes 121 face opposite directions. The first spray arm 1 is used to clean the dishes in the bowl basket located above it. The first water spray holes 111 are provided on the first upper shell 11 so that water sprays upward when sprayed from the first water spray holes 111. Two first through holes 121 are located on the first lower housing 12. Water is sprayed out of the two first through holes 121, respectively. When spraying water, the two first through holes 121 generate a force that drives the first spray arm 1 to rotate. The two first through holes 121 are arranged in opposite directions. This arrangement allows the forces generated by the two first through holes 121 when spraying water in two different directions to cooperate and cause the first spray arm 1 to rotate faster in a clockwise or counterclockwise direction. Preferably, each first water spray hole 111 has a different orientation to maximize the cleaning range. In addition, the water sprayed from the two first through holes 121 can also clean the dishes located below them.

[0041] Furthermore, the second spray arm 2 includes a second upper shell 21 and a second lower shell 22. The second upper shell 21 and the second lower shell 22 cover each other to form a second water chamber. The second lower shell 22 is provided with a plurality of second water spray holes 221, and the second upper shell 21 is provided with two second through holes 211. The two second through holes 211 are arranged along the length of the second upper shell 21, and the two second through holes 211 are respectively provided at the two ends of the second upper shell 21, and the two second through holes 211 face opposite directions. The second spray arm 2 is used to wash the dishes in the bowl basket located below it. The second water spray holes 221 are provided in the second lower shell 22 so that water sprayed from the second water spray holes 221 sprays downward. Two second through holes 211 are located on the second upper shell 21. Water is sprayed out of the two second through holes 211. When spraying water, the two second through holes 211 generate a force that drives the second spray arm 2 to rotate. The two second through holes 211 are set in opposite directions. This configuration allows the forces generated by the two second through holes 211 when spraying water in two different directions to cooperate and cause the second spray arm 2 to rotate faster in a clockwise or counterclockwise direction. Preferably, each second water spray hole 221 has a different orientation to maximize the cleaning range. In addition, the water sprayed from the two second through holes 211 can also clean the dishes located above them.

[0042] like Figure 3 、 Figure 7 and Figure 8 As shown, the limiting sleeve 3 includes a cover plate 31, which extends toward the first spray arm 1 and has an annular first connection portion 32 and a plug 33. The annular first connection portion 32 is arranged around the plug 33. The connector 5 is provided with a second connection portion 55, and the first connection portion 32 is used to connect with the second connection portion 55. The plug 33 is arranged opposite the opening of the connector 5. After the limiting sleeve 3 is connected to the connector 5, most or all of the plug 33 is located inside the connector 5. It is understandable that the height of the plug 33 should not be too high, otherwise it will block the first water supply hole 53. The water in the water supply pipe 4 enters the connector 5, and most of the water enters the first water storage chamber and the second water storage chamber through the first water supply portion and the second water inlet portion respectively. A small amount of water will continue to flow upward under the action of inertia and impact the plug 33, and then fall downward under the action of the plug 33 and gravity. The setting of the plug 33 can buffer the impact of water on one hand, and can prevent water from directly impacting the cover plate 31 on the other hand, thereby preventing the limit sleeve 3 from loosening due to long-term impact on the cover plate 31.

[0043] In some embodiments, a first clamping member is provided on the first connecting portion 32, and the first connecting portion 32 is a second clamping member. The first clamping member and the second clamping member cooperate to connect the limiting sleeve 3 and the connector 5. In this embodiment, the limiting sleeve 3 and the connector 5 are connected by clamping the first clamping member and the second clamping member, which can achieve rapid installation and removal of the limiting sleeve 3 and the connector 5.

[0044] In some embodiments, the inner circumferential wall of the first connecting portion 32 is provided with an internal thread, and the second connecting portion 55 is an external thread, and the internal thread and the external thread are screwed together to connect the limiting sleeve 3 and the connector 5. This embodiment connects the limiting sleeve 3 and the connector 5 by means of a threaded connection, which is easy to disassemble and reliable.

[0045] In one embodiment of the present disclosure, the cover plate 31 extends toward the first spray arm 1 with a first annular protrusion 34, the first annular protrusion 34 is arranged outside the first connecting portion 32, a first gap 35 is provided between the first annular protrusion 34 and the first connecting portion 32, a plurality of reinforcing ribs 36 are provided in the first gap 35, and the outer peripheral wall of the first annular protrusion 34 is provided with a structure for enhancing friction.

[0046] The provision of the first gap 35 saves material. Without the provision of the first gap 35, the first annular protrusion 34 and the first connecting portion 32 are integrally formed and have a thicker wall, which not only increases the overall weight of the limiting sleeve 3 but also increases material costs. A reinforcing rib 36 is provided in the first gap 35 to connect the first annular protrusion 34 and the first connecting portion 32, effectively strengthening the structural strength of the limiting sleeve 3. A friction-enhancing structure is provided on the outer peripheral wall of the first annular protrusion 34 to increase the friction between the human hand and the limiting sleeve 3, thereby facilitating installation or removal of the limiting sleeve 3.

[0047] like Figure 1 、 Figure 2 and Figure 6As shown, in one embodiment of the present disclosure, the water supply pipe 4 is provided with a plurality of arc-shaped ribs 42 at intervals along its length direction to strengthen its structural strength. A first positioning buckle 41 is provided on the end of the water supply pipe 4 away from the connector 5, and a second positioning buckle 51 is provided on the side of the connector 5 away from the water supply pipe 4. The first positioning buckle 41 and the second positioning buckle 51 are used to connect the bowl basket located below the water supply pipe 4. An annular plate 52 is provided on the end of the connector 5 close to the water supply pipe 4. The annular plate 52 is sleeved on the outside of the connector 5 and is integrally formed with the connector 5. The second bearing 7 is located on the annular plate 52, and the annular plate 52 plays a supporting role. Specifically, the second bearing 7, the second spray arm 2, the first bearing 6, the first spray arm 1 and the limit sleeve 3 are provided above the annular plate 52 from bottom to top. The weight of the second bearing 7, second spray arm 2, first bearing 6, and first spray arm 1, as well as the weight of the water within the first and second spray arms 1 and 2, bears substantially all upon the annular plate 52. To enhance the load-bearing capacity of the annular plate 52, a rib structure 521 is provided on its lower surface to increase its structural strength. To further enhance the structural strength of the annular plate 52, the annular plate 52 is located on the side of the water supply pipe 4 where it contacts the water supply pipe 4. The end of at least one arcuate rib 42 on the water supply pipe 4 contacts the lower surface of the annular plate 52.

[0048] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. A spray arm mechanism, characterized in that: The invention comprises a connecting head (5), a first spray arm (1) and a second spray arm (2); the connecting head (5) is provided with a first water supply portion and a second water supply portion respectively along the length direction; the first spray arm (1) and the second spray arm (2) are sleeved on the outside of the connecting head (5); the first spray arm (1) is provided with a first water containing cavity, which is in communication with the first water supply portion; the second spray arm (2) is provided with a second water containing cavity, which is in communication with the second water supply portion.

2. The spray arm mechanism according to claim 1, characterized in that: The connecting head (5) is provided with a first bearing (6) and a second bearing (7), the first bearing (6) is provided between the first spray arm (1) and the second spray arm (2), and the second bearing (7) is provided below the second spray arm (2). The upper end of the connecting head (5) is detachably connected to a limiting sleeve (3), and the limiting sleeve (3) is used to axially limit the first spray arm (1).

3. The spray arm mechanism according to claim 2, characterized in that: The limiting sleeve (3) comprises a cover plate (31), the cover plate (31) extending in the direction of the first spray arm (1) to have an annular first connecting portion (32) and a plug (33), the annular first connecting portion (32) being arranged around the plug (33), the connecting head (5) being provided with a second connecting portion (55), the first connecting portion (32) being used to connect to the second connecting portion (55).

4. The spray arm mechanism according to claim 1, characterized in that: The connector (5) is connected to a water supply pipe (4), and the connector (5) is in communication with the water supply pipe (4). The water supply pipe (4) is used to connect to an external pipeline. Water flowing through the water supply pipe (4) flows from the first water supply part to the first spray arm (1) and from the second water supply part to the second spray arm (2).

5. The spray arm mechanism according to claim 1, characterized in that: The first spray arm (1) includes a first interface connected to the first water containing chamber, and the first interface is sleeved on the outside of the first water supply part. The second spray arm (2) includes a second interface connected to the second water containing chamber, and the second interface is sleeved on the outside of the second water supply part.

6. The spray arm mechanism according to claim 1 or 5, characterized in that: The first water supply portion is composed of at least two first water supply holes (53), each of which is located at the same height; the second water supply portion is composed of at least two second water supply holes (54), each of which is located at the same height.

7. The spray arm mechanism according to claim 1, characterized in that: The first spray arm (1) comprises a first upper shell (11) and a first lower shell (12); the first water holding chamber is formed by the first upper shell (11) and the first lower shell (12) covering each other; the first upper shell (11) is provided with a plurality of first water spray holes (111); the first lower shell (12) is provided with two first through holes (121).

8. The spray arm mechanism according to claim 7, characterized in that: The two first through holes (121) are arranged along the length direction of the first lower shell (12), and the two first through holes (121) are respectively arranged at two ends of the first lower shell (12), and the two first through holes (121) are oriented in opposite directions.

9. The spray arm mechanism according to claim 1, characterized in that: The second spray arm (2) comprises a second upper shell (21) and a second lower shell (22); the second water holding chamber is formed by the second upper shell (21) and the second lower shell (22) covering each other; the second lower shell (22) is provided with a plurality of second water spray holes (221); and the second upper shell (21) is provided with two second through holes (211).

10. The spray arm mechanism according to claim 9, characterized in that: The two second through holes (211) are arranged along the length direction of the second upper shell (21), and the two second through holes (211) are respectively arranged at two ends of the second upper shell (21), and the two second through holes (211) are oriented in opposite directions.

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