Water supply connection column and washing machine

Abstract

This application relates to the field of cleaning technology, and provides a water supply connection column and a cleaning machine. The cleaning machine has a cleaning chamber and includes a first spray assembly, a water supply pipe, and a second spray assembly located within the cleaning chamber. The water supply connection column is disposed within the cleaning chamber and connects to the bottom wall of the cleaning chamber. The water supply connection column includes a first connecting section, a second connecting section, and a third connecting section. The peripheral wall of the first connecting section has a first water supply hole for passing through a spray arm. The second connecting section is connected to the upper end of the first connecting section, and its peripheral wall has a second water supply hole for passing through a spray frame. The third connecting section is connected to the upper end of the second connecting section, and its upper end face has a third water supply hole for connecting to the water supply pipe. The radial dimension of the outer peripheral surface of at least one of the first and third connecting sections is smaller than the radial dimension of the outer peripheral surface of the second connecting section. The water supply connection column provided by this application improves the user experience.

Description

Technical Field

[0001] This application belongs to the field of cleaning technology, and more specifically, relates to a water supply connection column and a cleaning machine. Background Technology

[0002] The cleaning machine can use a spray device to clean the items to be cleaned in the cleaning chamber. The spray device usually includes multiple spray elements for spraying water, and a water supply structure is needed to supply water to each spray element separately.

[0003] In related technologies, the assembly of water supply structures and spray components is difficult, which reduces the user experience. Utility Model Content

[0004] The purpose of this application is to provide a water supply connection column and a cleaning machine to improve the user experience.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, a water supply connection column for a cleaning machine is provided. The cleaning machine has a cleaning chamber and includes a first spray assembly, a water supply pipe, and a second spray assembly located within the cleaning chamber. The first spray assembly is located below the second spray assembly and includes a spray arm and a spray frame. The spray arm is located below the spray frame. The water supply pipe connects the first and second spray assemblies and is used to supply water to the second spray assembly. The water supply connection column is disposed within the cleaning chamber and is used to connect to the bottom wall of the cleaning chamber. The water supply connection column provided in this application includes a first connecting section, a second connecting section, and a third connecting section. The first connecting section has a first water supply hole on its peripheral wall and is used to pass through the spray arm to supply water to the spray arm. The second connecting section is connected to the upper end of the second connecting section, and has a second water supply hole on its peripheral wall. The second connecting section is used to pass through the spray frame to supply water to the spray frame. The third connecting section is connected to the upper end of the second connecting section, and has a third water supply hole on its upper end face. The third connecting section is used to connect to the water supply pipe to supply water to the water supply pipe. The radial dimension of the outer peripheral surface of at least one of the first connecting section and the third connecting section is smaller than the radial dimension of the outer peripheral surface of the second connecting section.

[0007] Through the above technical solution, the water supply connection column provided in this application can connect to the bottom wall of the cleaning chamber using the first connection section, and can supply water to the spray arm using the first connection section, supply water to the spray frame using the second connection section, and supply water to the water supply pipe using the third connection section, thereby supplying water to the second spray assembly. Furthermore, the radial dimension of the outer peripheral surface of at least one of the first and third connection sections is smaller than the radial dimension of the outer peripheral surface of the second connection section. This facilitates the second connection section of the water supply connection column to pass through the spray frame, thereby reducing the assembly difficulty of the water supply connection column with other components and improving the user experience.

[0008] Therefore, the water supply connection column provided in this application helps to improve the user experience.

[0009] In some embodiments, at least one of the first, second, and third connecting sections is a circular tube structure, or at least one of the first, second, and third connecting sections is a square tube structure. It is understood that when installing the circular tube structure with other components, alignment can be achieved at multiple points circumferentially on the water supply connection column, reducing alignment difficulty and thus simplifying the assembly of the water supply connection column with other components, thereby improving the user experience. The square tube structure can provide circumferential restraint for the connected components, which helps improve connection stability.

[0010] In some embodiments, the outer peripheral surface of the third connecting section is provided with a limiting protrusion, which is used to engage with the inner wall of the water supply pipe to restrict the relative rotation of the third connecting section and the water supply pipe along the circumference of the third connecting section.

[0011] This makes it less likely for the water supply pipe to rotate relative to the third connecting section, which helps improve the stability of the water supply pipe.

[0012] In some embodiments, a sealing structure is provided on the outer peripheral surface of the third connecting section. The sealing structure is used to seal the connection with the inner wall of the water supply pipe. The sealing structure extends circumferentially along the third connecting section and is a closed ring.

[0013] In this way, the third connecting section of the water supply connection column provided in this application can be sealed to the water supply pipe, which helps to prevent the cleaning fluid from leaking from the connection between the third connecting section and the water supply pipe.

[0014] In some implementations, the radial dimensions of the outer peripheral surfaces of the first connecting segment, the second connecting segment, and the third connecting segment decrease sequentially.

[0015] In this way, the spray arm, spray frame, and water supply pipe can be installed sequentially from top to bottom, which can further reduce the assembly difficulty of the water supply connection column and other components, and help improve the user experience.

[0016] In some embodiments, the water supply connection column provided in this application further includes an installation section for connecting the bottom wall of the cleaning chamber. The installation section is connected to the lower end of the first connection section, and the radial dimension of the outer peripheral surface of the installation section is greater than the radial dimension of the outer peripheral surface of the first connection section. The upper end of the installation section is provided with a first support surface surrounding the first connection section, and the first support surface is used to support the spray arm.

[0017] In this way, the first connecting section of the water supply connecting column provided in this application can be connected to the bottom wall of the cleaning chamber through the installation section, thereby fixing the water supply connecting column. In addition, the water supply connecting column provided in this application can also use the first support surface to support the spray arm, which helps to improve the connection stability.

[0018] In some embodiments, the upper end of the first connecting section is provided with a second support surface surrounding the second connecting section, the second support surface being used to support the spray arm or spray frame;

[0019] And / or, the upper end of the second connecting section is provided with a third support surface surrounding the third connecting section, the third support surface being used to support the spray frame or water supply pipe.

[0020] In this way, the water supply connection column provided in this application can support the spray arm, spray frame and water supply pipe, which helps to improve the connection stability.

[0021] In some embodiments, the radial dimension of the outer peripheral surface of the first connecting section is a first dimension, the radial dimension of the outer peripheral surface of the second connecting section is a second dimension, and the radial dimension of the outer peripheral surface of the third connecting section is a third dimension, wherein the second dimension is larger than the first dimension and the third dimension is larger. In this way, the water supply connecting column provided in this application can be assembled with the sprinkler frame using the second connecting section first, and then assembled with other components using the first and third connecting sections, thus increasing its applicability.

[0022] In some implementations, the water supply connection column is a one-piece molded structure, which can reduce the processing difficulty of the water supply connection column and help reduce processing costs.

[0023] Secondly, this application provides a cleaning machine having a cleaning chamber and including a water supply connection column as described in any of the above embodiments. The water supply connection column is disposed within the cleaning chamber, and a first connecting section is connected to the bottom wall of the cleaning chamber. A first spray assembly is disposed within the cleaning chamber, including a spray arm and a spray frame. The spray arm is located below the spray frame, and a first connecting section passes through the spray arm to supply water to the spray arm. A second connecting section passes through the spray frame to supply water to the spray frame. A second spray assembly is disposed within the cleaning chamber, and the first spray assembly is located below the second spray assembly. A water supply pipe is disposed within the cleaning chamber, connecting the first spray assembly and the second spray assembly, and is used to supply water to the second spray assembly. The upper end of a third connecting section is connected to the water supply pipe to supply water to the water supply pipe.

[0024] The cleaning machine provided in this application has the same or similar technical effects as the water supply connection column of any of the above embodiments, and will not be described again here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a partial structural diagram of the cleaning machine provided in an embodiment of this application;

[0027] Figure 2 For along Figure 1 Cross-sectional view of line AA in the middle;

[0028] Figure 3 for Figure 2 A magnified view of a portion of point B in the middle;

[0029] Figure 4 This is a three-dimensional structural diagram of the water supply connection column provided in the embodiments of this application.

[0030] The following are the labeling elements in the figure:

[0031] Cleaning machine 1000; fixing frame 1100; water supply connection column 100; first spray assembly 200; spray arm 210; first spray channel 2101; first spray hole 2102; spray frame 220; second spray channel 2201; water supply pipe 300; water supply channel 310; annular groove 320; limiting groove 321;

[0032] First connecting section 10; first water supply hole 101; second support surface 102; second connecting section 20; second water supply hole 201; third support surface 202; third connecting section 30; third water supply hole 301; limiting protrusion 3131; sealing groove 32; sealing ring 33; mounting section 40; first support surface 401; mounting ear plate 41; mounting hole 411. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] The cleaning machine 1000 can use a spray device to clean the items to be cleaned in the cleaning chamber. The spray device usually includes multiple spray elements for spraying water, and a water supply structure is needed to supply water to each spray element separately.

[0038] In related technologies, the assembly of water supply structures and spray components is difficult, which reduces the user experience.

[0039] To address the aforementioned technical problems, this application provides a water supply connection column 100 and a cleaning machine 1000.

[0040] Please see Figure 1 This application provides a cleaning machine 1000, which has a cleaning chamber (not shown in the figure) in which the items to be cleaned can be placed for cleaning.

[0041] The cleaning machine 1000 provided in this application embodiment also includes a water pump (not shown in the figure), a water supply connection column 100, a first spray assembly 200, a water supply pipe 300 and a second spray assembly (not shown in the figure) disposed in the cleaning chamber. The water supply pipe 300 is connected between the first spray assembly 200 and the second spray assembly and is used to supply water to the second spray assembly. The water inlet of the water pump is connected to the drain outlet of the cleaning chamber, and the drain outlet is disposed on the bottom wall of the cleaning chamber.

[0042] The first spray assembly 200 is located below the second spray assembly. The first spray assembly 200 includes a spray arm 210 and a spray frame 220, with the spray arm 210 located below the spray frame 220.

[0043] The cleaning machine 1000 provided in this embodiment further includes a fixing frame 1100, which is installed on the bottom wall of the cleaning chamber and forms part of the bottom wall. A water supply connection column 100 can be connected to the fixing frame 1100, allowing the water supply connection column 100 to be connected to the bottom wall of the cleaning chamber and thus stably fixed to it. The fixing frame 1100 has a connecting hole that connects to the outlet of the water pump and the inlet of the water supply connection column 100, allowing the water pump to pump the cleaning fluid into the water supply connection column 100.

[0044] When the cleaning machine 1000 provided in this application embodiment is working, the water pump pumps the cleaning liquid in the cleaning chamber into the water supply connection column 100. The water supply connection column 100 can deliver the cleaning liquid to the first spray assembly 200 and the second spray assembly, so that the first spray assembly 200 and the second spray assembly can spray water onto the items to be cleaned in the cleaning chamber, thereby cleaning the items to be cleaned in the cleaning chamber.

[0045] The water supply connection column 100 provided in this application will be described below with reference to the accompanying drawings.

[0046] Please refer to the following: Figure 2 , Figure 3 and Figure 4 The water supply connection column 100 provided in this application embodiment includes a first connection segment 10, a second connection segment 20 and a third connection segment 30. The second connection segment 20 is connected to the upper end of the second connection segment 20, and the third connection segment 30 is connected to the upper end of the second connection segment 20. That is, the first connection segment 10, the second connection segment 20 and the third connection segment 30 are connected sequentially from bottom to top.

[0047] The first connecting section 10 has a first water supply hole 101 on its peripheral wall, and the first connecting section 10 passes through the spray arm 210. The spray arm 210 has a first spray channel 2101 and a first spray hole 2102 communicating with the first spray channel 2101. The first water supply hole 101 communicates with the first spray channel 2101, so that the first connecting section 10 can supply water to the spray arm 210.

[0048] The second connecting section 20 has a second water supply hole 201 on its peripheral wall, and the second connecting section 20 passes through the spray frame 220. The spray frame 220 has a second spray channel 2201 and a second spray hole (not shown in the figure) communicating with the second spray channel 2201. The second water supply hole 201 communicates with the second spray channel 2201, so that the second connecting section 20 can supply water to the spray frame 220.

[0049] The upper end face of the third connecting section 30 is provided with a third water supply hole 301, and the third connecting section 30 is connected to the water supply pipe 300. The water supply pipe 300 has a water supply channel 310, and the third water supply hole 301 communicates with the water supply channel 310, so that the third connecting section 30 can supply water to the water supply pipe 300. Optionally, the upper end of the third connecting section 30 is inserted into the inside of the water supply pipe 300.

[0050] Optionally, please refer to Figure 3 The inner wall of the water supply pipe 300 is provided with an annular groove 320, and the third connecting section 30 can cooperate with the annular groove 320, which facilitates the connection between the third connecting section 30 and the water supply pipe 300.

[0051] In addition, the radial dimension of the outer peripheral surface of at least one of the first connecting section 10 and the third connecting section 30 is smaller than the radial dimension of the outer peripheral surface of the second connecting section 20. This makes it easier for the second connecting section 20 of the water supply connecting column 100 to pass through the spray frame 220, thereby reducing the assembly difficulty of the water supply connecting column 100 with other components and improving the user experience.

[0052] Therefore, the water supply connection column 100 provided in this application embodiment helps to improve the user experience.

[0053] Please see Figure 4 In some embodiments, the radial dimensions of the outer peripheral surfaces of the first connecting segment 10, the second connecting segment 20, and the third connecting segment 30 decrease sequentially. When the water supply connecting column 100 provided in this application embodiment is installed with other components, the spray arm 210 can pass through the second connecting segment 20 and the third connecting segment 30 from top to bottom to cooperate with the first connecting segment 10, the spray frame 220 can pass through the third connecting segment 30 from top to bottom to cooperate with the second connecting segment 20, and finally the water supply pipe 300 can cooperate with the third connecting segment 30.

[0054] In this way, the spray arm 210, spray frame 220, and water supply pipe 300 can be installed sequentially from top to bottom, which can further reduce the assembly difficulty of the water supply connection column 100 and other components, and help improve the user experience.

[0055] In other embodiments, the radial dimension of the outer peripheral surface of the first connecting segment 10 is a first dimension, the radial dimension of the outer peripheral surface of the second connecting segment 20 is a second dimension, and the radial dimension of the outer peripheral surface of the third connecting segment 30 is a third dimension. The second dimension is larger than the first dimension, and the second dimension is larger than the third dimension, meaning the second dimension is the largest. In this way, the spray frame 220 can pass through the third connecting segment 30 from top to bottom to cooperate with the second connecting segment 20, or it can pass through the first connecting segment 10 from bottom to top to cooperate with the second connecting segment 20. The water supply connecting column 100 provided in this application embodiment can be assembled with the spray frame 220 using the second connecting segment 20 first, and then assembled with other components using the first connecting segment 10 and the third connecting segment 30, thus increasing its applicability.

[0056] For example, the spray arm 210 can be engaged with the first connecting section 10 from below, that is, the first connecting section 10 can be inserted into the spray arm 210 from top to bottom. In this case, the first connecting section 10 can be connected to the bottom wall of the cleaning chamber by means of threaded connection.

[0057] For example, the water supply pipe 300 can be fitted with the third connecting section 30 from above, that is, the third connecting section 30 can be inserted into the water supply pipe 300 from bottom to top.

[0058] In some embodiments, at least one of the first connecting segment 10, the second connecting segment 20, and the third connecting segment 30 is a circular tube structure. In this way, when the water supply connecting column 100 provided in this embodiment is installed with other components, the circular tube structure allows for alignment at multiple positions around the water supply connecting column 100, reducing alignment difficulty and thus lowering the assembly difficulty of the water supply connecting column 100 with other components, thereby improving the user experience.

[0059] Optionally, the first connecting section 10 is a circular tube structure, so that the first connecting section 10 can be rotatably connected to the spray arm 210, which facilitates the rotation of the spray arm 210.

[0060] Optionally, the second connecting section 20 is a circular tube structure, which facilitates the connection between the second connecting section 20 and the spray frame 220.

[0061] Optionally, the third connecting section 30 is a circular pipe structure, which facilitates the connection between the third connecting section 30 and the water supply pipe 300.

[0062] In other embodiments, at least one of the first connecting segment 10, the second connecting segment 20, and the third connecting segment 30 is a square tube structure. In this way, when the water supply connecting column 100 provided in this application is installed with other components, the square tube structure can circumferentially limit the connected components, which helps to improve connection stability.

[0063] Optionally, the first connecting section 10 is a square tube structure, which can improve the stability of the connection between the first connecting section 10 and the spray arm 210.

[0064] Optionally, the second connecting section 20 is a circular tube structure, which can improve the stability of the connection between the second connecting section 20 and the spray frame 220.

[0065] Optionally, the third connecting section 30 is a circular pipe structure, which can improve the stability of the connection between the third connecting section 30 and the water supply pipe 300.

[0066] Please see Figure 3 and Figure 4 In some embodiments, the outer peripheral surface of the third connecting segment 30 is provided with a limiting protrusion, which is used to engage with the inner wall of the water supply pipe 300 to restrict the relative rotation of the third connecting segment 30 and the water supply pipe 300 along the circumference of the third connecting segment 30.

[0067] Optionally, a limiting groove 321 can be provided on the inner wall of the water supply pipe 300, and a limiting protrusion can be inserted into the limiting groove 321, so that the limiting protrusion can be engaged with the inner wall of the water supply pipe 300.

[0068] The limiting groove 321 and the limiting protrusion extend along the length direction (vertical direction) of the water supply pipe 300, and there can be multiple limiting grooves 321 and multiple limiting protrusions, which are arranged at intervals along the circumference of the water supply pipe 300.

[0069] In this way, the water supply pipe 300 is less likely to rotate relative to the third connecting section 30, which helps to improve the stability of the water supply pipe 300.

[0070] Please continue reading. Figure 3 and Figure 4 In some embodiments, the outer peripheral surface of the third connecting section 30 is provided with a sealing structure, which is used to seal the connection with the inner wall of the water supply pipe 300. The sealing structure extends circumferentially along the third connecting section 30 and is a closed ring.

[0071] Optionally, the sealing structure may include an annular sealing groove 32 disposed on the outer peripheral surface of the third connecting section 30 and an inner annular sealing ring 33 located in the sealing groove 32. The sealing ring 33 may abut against the inner wall of the water supply pipe 300, thereby enabling the sealing structure to be sealed to the inner wall of the water supply pipe 300.

[0072] In this way, the third connecting section 30 of the water supply connecting column 100 provided in this application embodiment can be sealed to the water supply pipe 300, which helps to prevent the cleaning fluid from leaking from the connection between the third connecting section 30 and the water supply pipe 300.

[0073] Please continue reading. Figure 2 and Figure 4 In some embodiments, the water supply connection column 100 provided in this application embodiment further includes an installation section 40 for connecting the bottom wall of the cleaning chamber. The installation section 40 is connected to the lower end of the first connection section 10. The installation section 40 can be connected to the fixing frame 1100, thereby connecting the bottom wall of the cleaning chamber.

[0074] Optionally, the outer peripheral surface of the mounting section 40 is provided with a mounting ear plate 41, which is connected to the fixing bracket 1100. Therefore, the first connecting section 10 can be connected to the bottom wall of the cleaning chamber through the mounting ear plate 41, thereby fixing the water supply connecting column 100. The mounting ear plate 41 can be connected to the fixing bracket 1100 through the mounting hole 411.

[0075] Optionally, the radial dimension of the outer peripheral surface of the mounting section 40 is larger than the radial dimension of the outer peripheral surface of the first connecting section 10. The upper end of the mounting section 40 is provided with a first support surface 401 surrounding the first connecting section 10. The first support surface 401 is used to support the spray arm 210. The water supply connection column 100 provided in this application embodiment can use the first support surface 401 to support the spray arm 210, thereby improving the connection stability.

[0076] In some embodiments, the water supply connection column 100 is an integrally formed structure, that is, the installation section 40, the first connection section 10, the second connection section 20 and the third connection section 30 are integrally connected. This can reduce the processing difficulty of the water supply connection column 100 and help reduce processing costs.

[0077] Please continue reading. Figure 2 and Figure 4 In some embodiments, the upper end of the first connecting segment 10 is provided with a second support surface 102 surrounding the second connecting segment 20, and the second support surface 102 is used to support the spray arm 210 or the spray frame 220.

[0078] In some examples, the second support surface 102 can support the spray arm 210, which can improve the stability of the spray arm 210, and the spray arm 210 can support the spray frame 220.

[0079] In other examples, the second support surface 102 can support the spray frame 220, which helps to prevent the spray arm 210 from contacting the spray frame 220, thereby reducing the resistance when the spray arm 210 rotates.

[0080] Optionally, the upper end of the second connecting section 20 is provided with a third support surface 202 surrounding the third connecting section 30, the third support surface 202 being used to support the spray frame 220 or the water supply pipe 300.

[0081] In some examples, the third support surface 202 can support the spray frame 220, thereby improving the stability of the spray frame 220. The spray frame 220 can support the water supply pipe 300.

[0082] In other examples, the third support surface 202 can support the water supply pipe 300, thereby improving the stability of the water supply pipe 300.

[0083] Therefore, the water supply connection column 100 provided in this application embodiment can support the spray arm 210, the spray frame 220 and the water supply pipe 300, which is beneficial to improving the connection stability.

[0084] The cleaning machine 1000 provided in this application embodiment may include the water supply connection column 100 of any of the above embodiments, and has the same or similar technical effects as the water supply connection column 100 of any of the above embodiments, which will not be described again here.

[0085] The above are merely specific embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water supply connection column of a cleaning machine, characterized by, The cleaning machine has a cleaning chamber and includes a first spray assembly, a water supply pipe, and a second spray assembly located within the cleaning chamber. The first spray assembly is located below the second spray assembly. The first spray assembly includes a spray arm and a spray frame. The spray arm is located below the spray frame. The water supply pipe is connected between the first spray assembly and the second spray assembly and is used to supply water to the second spray assembly. The water supply connection column is used to be disposed within the cleaning chamber and is used to connect to the bottom wall of the cleaning chamber. The water supply connection column includes: The first connecting section has a first water supply hole on its peripheral wall, which is used to pass through the spray arm to supply water to the spray arm; The second connecting section is connected to the upper end of the second connecting section. The peripheral wall of the second connecting section is provided with a second water supply hole, which is used to pass through the spray frame to supply water to the spray frame. The third connecting section is connected to the upper end of the second connecting section. The upper end face of the third connecting section is provided with a third water supply hole, which is used to connect to the water supply pipe to supply water to the water supply pipe. The radial dimension of the outer peripheral surface of at least one of the first connecting segment and the third connecting segment is smaller than the radial dimension of the outer peripheral surface of the second connecting segment.

2. The water service pillar of claim 1, wherein, At least one of the first connecting segment, the second connecting segment, and the third connecting segment is a circular tube structure, or at least one of the first connecting segment, the second connecting segment, and the third connecting segment is a square tube structure.

3. The water service pillar of claim 2, wherein, The outer peripheral surface of the third connecting section is provided with a limiting protrusion, which is used to engage with the inner wall of the water supply pipe to restrict the relative rotation of the third connecting section and the water supply pipe along the circumference of the third connecting section.

4. Water supply connection column according to any one of claims 1 to 3, characterized in that The outer circumferential surface of the third connecting section is provided with a sealing structure, which is used to seal the connection with the inner wall of the water supply pipe. The sealing structure extends circumferentially along the third connecting section and is a closed ring.

5. The water supply connection column as described in any one of claims 1 to 3, characterized in that, The radial dimensions of the outer peripheral surfaces of the first connecting segment, the second connecting segment, and the third connecting segment decrease sequentially.

6. The water service pillar of claim 5, wherein, The water supply connection column also includes an installation section for connecting the bottom wall of the cleaning chamber. The installation section is connected to the lower end of the first connection section, and the radial dimension of the outer peripheral surface of the installation section is greater than the radial dimension of the outer peripheral surface of the first connection section. The upper end of the installation section is provided with a first support surface surrounding the first connection section, and the first support surface is used to support the spray arm.

7. The water service pillar of claim 5, wherein, The upper end of the first connecting segment is provided with a second support surface surrounding the second connecting segment, and the second support surface is used to support the spray arm or the spray frame; And / or, the upper end of the second connecting segment is provided with a third support surface surrounding the third connecting segment, the third support surface being used to support the spray frame or the water supply pipe.

8. A water service pillar as claimed in any one of claims 1 to 3, wherein, The radial dimension of the outer peripheral surface of the first connecting segment is a first dimension, the radial dimension of the outer peripheral surface of the second connecting segment is a second dimension, and the radial dimension of the outer peripheral surface of the third connecting segment is a third dimension. The second dimension is greater than the first dimension and the third dimension is also greater than the third dimension.

9. A water service pillar according to any one of claims 1 to 3, wherein, The water supply connection column is a one-piece molded structure.

10. A cleaning machine characterized by, The cleaning machine has a cleaning chamber, and the cleaning machine includes: The water supply connection column according to any one of claims 1 to 9 is disposed in the cleaning chamber, and the first connection section is connected to the bottom wall of the cleaning chamber; A first spray assembly is disposed in the cleaning chamber. The first spray assembly includes a spray arm and a spray frame. The spray arm is located below the spray frame. A first connecting section passes through the spray arm to supply water to the spray arm. A second connecting section passes through the spray frame to supply water to the spray frame. The second spray assembly is disposed inside the cleaning chamber, and the first spray assembly is located below the second spray assembly; A water supply pipe is disposed inside the cleaning chamber. The water supply pipe is connected between the first spray assembly and the second spray assembly and is used to supply water to the second spray assembly. The upper end of the third connecting section is connected to the water supply pipe to supply water to the water supply pipe.

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