Spraying device and cleaning machine

Abstract

The utility model relates to a kind of spraying device and cleaning machine, belong to cleaning equipment technical field.A kind of spraying device, including spraying support assembly;Spraying runner assembly, the spraying runner assembly is set on the spraying support assembly;Liquid supply column, the liquid supply column is set on the spraying runner assembly, the liquid supply column is cooperated with the spraying runner assembly and forms liquid supply channel, the liquid supply column is set apart from the spraying runner assembly with the liquid supply channel intercommunication's liquid supply mouth;Spray head assembly, the spray head assembly can be dismantled and set on the liquid supply column, spray hole is set on the spray head assembly, the spray hole is intercommunicated with the liquid supply mouth.Spray head assembly is connected with liquid supply column by thread or buckle, and it is convenient to disassemble and assemble, it is convenient to replace when wearing, block or need to adapt different spraying needs, reduce maintenance difficulty and cost.The device structure is stable, spraying covers comprehensively, ensures that cleaning machine is efficiently operated, prolongs service life, improves overall performance.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a spraying device and a cleaning machine. Background Technology

[0002] In the design and application of spray systems for cleaning machines, the ease of maintenance of the nozzle assembly is crucial for the continuous and stable operation of the system. Currently, many existing spray systems have fixed nozzle assemblies, which make disassembly and replacement cumbersome when wear or blockage occurs. This not only increases maintenance difficulty and costs but may also affect operational efficiency due to prolonged downtime. Therefore, it is necessary to optimize the structure of the spray system. Utility Model Content

[0003] Therefore, it is necessary to provide a spraying device and a cleaning machine to address the maintenance issues caused by the fixed structure of the nozzle assembly in the spraying device of the cleaning machine.

[0004] A spraying device includes: a spray support assembly; a spray channel assembly disposed on the spray support assembly; a liquid supply column disposed on the spray channel assembly, the liquid supply column and the spray channel assembly cooperating to form a liquid supply channel, and a liquid supply port communicating with the liquid supply channel is opened at one end of the liquid supply column away from the spray channel assembly; and a nozzle assembly detachably disposed on the liquid supply column, the nozzle assembly having spray holes that communicate with the liquid supply port.

[0005] The aforementioned spraying device provides a stable installation foundation for the entire system through the spray support assembly. The liquid supply channel formed by the spray flow channel assembly and the liquid supply column enables efficient liquid delivery. The connection between the liquid supply port and the spray hole ensures that the liquid can flow smoothly from the liquid supply channel to the spray hole and be sprayed out, thereby completing the spraying operation. The nozzle assembly is detachable, allowing for easy disassembly and installation when wear, blockage, or replacement with different types of nozzles to meet different spraying needs. This reduces maintenance difficulty and improves the flexibility of the device.

[0006] In one embodiment, the nozzle assembly and the liquid supply column are detachably connected by threads. The self-locking property of the threads ensures a tight connection between the nozzle assembly and the liquid supply column, effectively resisting the impact of liquid pressure on the connection during spraying and reducing the risk of loosening. Furthermore, the threaded connection is simple in structure; operators can easily assemble and disassemble it by simply rotating it, without the need for complex tools, facilitating routine maintenance and replacement.

[0007] In one embodiment, the nozzle assembly and the liquid supply column are connected by a snap-fit ​​connection. When using a snap-fit ​​connection, the elastic deformation of the snap allows for quick engagement and disengagement, making the operation convenient and efficient, and significantly reducing the replacement time of the nozzle assembly. This connection method requires no additional fastening components, has a lightweight structure, and ensures reliable connection when properly engaged, meeting the basic requirements of sprinkler operations for connection stability.

[0008] In one embodiment, the spray nozzle includes a first spray nozzle and a second spray nozzle. The first spray nozzle is located at the end of the nozzle assembly away from the liquid supply column, and the second spray nozzle is located on the side of the nozzle assembly. The first spray nozzle, located at the end of the nozzle assembly, can directly spray the area directly in front of the nozzle, while the second spray nozzle, located on the side, can spray the area lateral to the nozzle. The two work together to ensure that the spray range is no longer limited to a single direction, but can cover more angles and positions, reduce spray dead zones, and improve the comprehensiveness and effectiveness of the spraying operation.

[0009] In one embodiment, there are multiple second nozzles distributed on the side of the nozzle assembly. The distribution of multiple second nozzles on the side of the nozzle assembly disperses the liquid into multiple streams that are sprayed laterally, increasing the coverage area of ​​the lateral spray. Simultaneously, the reasonable distribution of multiple nozzles ensures a more uniform distribution of liquid during lateral spraying, avoiding insufficient spraying in localized areas and improving the lateral spraying effect.

[0010] In one embodiment, the first nozzle is X-shaped or Y-shaped. When the first nozzle is X-shaped or Y-shaped, the liquid delivered from the liquid supply port can be diverted at the end, causing the liquid to be sprayed in multiple different directions, thus expanding the diffusion range of the end spray and enhancing the coverage capability of the end spray. This is suitable for scenarios where a large area directly in front of the nozzle needs to be sprayed.

[0011] In one embodiment, the number of the first spray holes is multiple. When the number of the first spray holes is multiple, multiple independent spray water streams can be formed at the end of the nozzle assembly. These water streams work together to increase the coverage density and range of the end spray, improve the uniformity of the end area spray, and ensure that the area can be fully sprayed.

[0012] In one embodiment, the nozzle assembly includes a spray pipe and a locking member. The spray pipe is detachably mounted on the liquid supply column and has spray holes. The locking member is sleeved on the spray pipe, with a portion of the spray pipe clamped between the locking member and the liquid supply column. The locking member is detachably mounted on the liquid supply column. The clamping force applied to the spray pipe by the locking member effectively enhances the stability of the connection between the spray pipe and the liquid supply column, preventing loosening due to liquid pressure fluctuations or device vibration during spraying, thus ensuring the continuity of the spraying operation. Furthermore, the detachable design of both the spray pipe and the locking member allows for easy disassembly and cleaning when the spray pipe is damaged, reducing maintenance costs and complexity.

[0013] In one embodiment, the locking element includes a collar and a locking plate. The collar is sleeved on the spray pipe, with a portion of the spray pipe sandwiched between the collar and the liquid supply column. The locking plate is disposed on the collar and is detachably connected to the liquid supply column. The collar makes full contact with the outer surface of the spray pipe, increasing the contact area and making the clamping force distribution more uniform, thereby better securing the spray pipe and preventing displacement during operation. The detachable connection between the locking plate and the liquid supply column not only achieves a stable connection between the locking element and the liquid supply column but also simplifies operation when the locking element needs to be disassembled, facilitating the inspection or replacement of the spray pipe and further improving the maintenance convenience of the device.

[0014] In one embodiment, there are multiple locking plates, which are disposed on the collar and spaced apart circumferentially along the collar. The multiple locking plates spaced apart circumferentially allow for the application of tension or pressure to the collar from multiple directions, ensuring the collar is securely fixed to the spray pipe. This prevents localized loosening due to force applied in a single direction, improving the stability and evenness of the collar's fixation to the spray pipe.

[0015] In one embodiment, one of the locking plate and the liquid supply column is provided with a limiting hole or a limiting groove, and the other of the locking plate and the liquid supply column is provided with a limiting protrusion. The limiting protrusion engages with the limiting hole or the limiting groove. This engagement of the limiting protrusion with the limiting hole or the limiting groove provides a positioning function when the locking plate and the liquid supply column are connected, ensuring accurate alignment and preventing misalignment. Simultaneously, the snap-fit ​​structure provides a certain locking force after connection, preventing relative displacement during device operation, ensuring connection reliability. Furthermore, this engagement method is simple to operate and facilitates quick assembly and disassembly.

[0016] In one embodiment, the spray pipe includes a mounting base, a liquid outlet pipe, and a sealing rib. The liquid outlet pipe is disposed on the mounting base and has the spray holes. The sealing rib is disposed on the mounting base and surrounds the mounting base. A locking member is sleeved on the liquid outlet pipe. The mounting base is clamped between the locking member and the liquid supply column. The sealing rib is also clamped between the locking member and the mounting base. The sealing rib surrounds the mounting base and is located between the locking member and the mounting base. Through the fixed engagement of the locking member and the liquid supply column, it can fill the gap between them, effectively preventing liquid leakage from the connection point, improving the sealing performance of the device, reducing liquid waste and corrosion to other components. Simultaneously, the mounting base further enhances the stability of the connection between the spray pipe and the liquid supply column.

[0017] In one embodiment, the spray pipe is sleeved on the liquid supply column. The sleeved structure between the spray pipe and the liquid supply column facilitates rapid positioning, ensuring accurate alignment between the liquid supply port and the internal channel of the spray pipe, and guaranteeing smooth liquid flow. Simultaneously, the sleeved structure provides guidance and support, enhancing connection stability and reducing assembly errors.

[0018] In one embodiment, the spray support assembly includes a support frame, a support net, and support rods. The support frame is annular, the support net is disposed on the support frame and located inside the support frame, and the support rods are disposed on the support frame and located on both sides of the support frame. The annular support frame structure has good strength and stability, providing a solid frame support for the entire device. The support net, located inside the support frame, can support items placed on it; the support rods on both sides of the support frame can both place items and provide auxiliary support for items on the support net, ensuring the stability of the placed items while not affecting the flow of spray liquid, thus ensuring smooth spraying operations.

[0019] In one embodiment, the spray channel assembly includes a main liquid supply arm and multiple liquid supply support arms, each mounted on the main liquid supply arm. The liquid supply column is mounted on one of the liquid supply support arms, and the liquid supply column and the liquid supply support arm are integrally formed. The multiple liquid supply support arms extend the liquid supply channel in multiple directions, expanding the liquid supply range. Multiple liquid supply columns and nozzle assemblies can be installed, enabling spraying operations over a larger area. The integral formation of the liquid supply column and the liquid supply support arm enhances structural strength and sealing performance, reduces the risk of breakage and leakage, and simultaneously reduces assembly steps, simplifies the manufacturing process, and lowers production costs.

[0020] The second aspect of this application discloses a cleaning machine, which includes the above-mentioned spraying device.

[0021] The aforementioned cleaning machine features a detachable nozzle assembly design, making equipment maintenance more convenient. When the nozzle assembly becomes worn or clogged, it can be quickly disassembled for replacement or cleaning, reducing maintenance time and costs. Simultaneously, the stable structural connection of the spray device ensures continuous operation of the cleaning machine, and excellent sealing performance reduces liquid leakage, guaranteeing efficient cleaning, extending equipment lifespan, and improving overall performance and economy. Attached Figure Description

[0022] Figure 1 This is a first perspective view of the spraying device; Figure 2 This is a second perspective view of the spraying device; Figure 3 This is a third perspective view of the spray system; Figure 4 This is a cross-sectional view of the spray system; Figure 5 This is an exploded view of the sprinkler system. Figure 6 A 3D view of the spray pipes; Figure 7 This is a 3D view of the locking component.

[0023] The correspondence between the reference numerals and the component names is as follows: 1. Sprinkler support assembly; 11. Support frame; 12. Support net; 13. Support rod; 2 spray channel assembly, 21 main liquid supply arm, 22 liquid supply support arm; 3. Liquid supply column, 301 liquid supply channel, 302 liquid supply port; 4. Nozzle assembly, 41. Spray pipe, 411. Mounting base, 412. Liquid outlet pipe, 413. Sealing rib, 42. Locking component, 421. Collar, 422. Locking plate, 401. Spray hole, 4011. First spray hole, 4012. Second spray hole. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] The following description, with reference to the accompanying drawings, describes some embodiments of the spraying device and cleaning machine of this utility model.

[0027] Example 1

[0028] like Figures 1 to 7 As shown, this embodiment discloses a spraying device, including a spraying support assembly 1; a spraying channel assembly 2, which is disposed on the spraying support assembly 1; a liquid supply column 3, which is disposed on the spraying channel assembly 2, and the liquid supply column 3 and the spraying channel assembly 2 cooperate to form a liquid supply channel 301, and a liquid supply port 302 communicating with the liquid supply channel 301 is opened at one end of the liquid supply column 3 away from the spraying channel assembly 2; and a nozzle assembly 4, which is detachably disposed on the liquid supply column 3, and a spray hole 401 is opened on the nozzle assembly 4, which is communicating with the liquid supply port 302.

[0029] The spraying device disclosed in this application provides a stable installation foundation for the entire device through the spray support assembly 1. The liquid supply channel 301 formed by the spray flow channel assembly 2 and the liquid supply column 3 enables effective liquid delivery. The connection between the liquid supply port 302 and the spray hole 401 ensures that the liquid can flow smoothly from the liquid supply channel 301 to the spray hole 401 and be sprayed out, thereby completing the spraying operation. The nozzle assembly 4 is detachable, which allows for convenient disassembly and installation when it becomes worn, clogged, or when different types of nozzles need to be replaced to adapt to different spraying needs. This reduces maintenance difficulty and improves the flexibility of the device.

[0030] like Figure 1 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the nozzle assembly 4 and the liquid supply column 3 are detachably connected by threads. When using a threaded detachable connection, the self-locking property of the threads ensures the tightness of the connection between the nozzle assembly 4 and the liquid supply column 3, effectively resisting the impact of liquid pressure on the connection during spraying and reducing the risk of loosening. At the same time, the threaded connection has a simple structure; operators can complete the assembly and disassembly simply by rotating it, without the need for complex tools, facilitating daily maintenance and replacement operations.

[0031] In addition to the features of the above embodiments, this embodiment further specifies that the nozzle assembly 4 and the liquid supply column 3 are connected by a snap-fit ​​connection. When using a snap-fit ​​connection, the elastic deformation of the snap-fit ​​enables quick engagement and disengagement, making the operation convenient and efficient, and significantly shortening the replacement time of the nozzle assembly 4. This connection method requires no additional fastening components, has a lightweight structure, and ensures the reliability of the connection when properly engaged, meeting the basic requirements of sprinkler operation for connection stability.

[0032] like Figure 1 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the spray hole 401 includes a first spray hole 4011 and a second spray hole 4012. The first spray hole 4011 is located at the end of the nozzle assembly 4 away from the liquid supply column 3, and the second spray hole 4012 is located on the side of the nozzle assembly 4. The first spray hole 4011 is located at the end of the nozzle assembly 4 and can directly spray the area directly in front of the nozzle. The second spray hole 4012 is located on the side and can spray the area lateral around the nozzle. The two work together to make the spray range no longer limited to a single direction, but can cover more angles and positions, reduce spray dead zones, and improve the comprehensiveness and effectiveness of the spraying operation.

[0033] In addition to the features of the above embodiments, this embodiment further specifies that: the number of second spray holes 4012 is multiple, and the multiple second spray holes 4012 are distributed on the side of the nozzle assembly 4. The multiple second spray holes 4012 distributed on the side of the nozzle assembly 4 can disperse the liquid into multiple water streams that are sprayed out from the side, increasing the coverage area of ​​the side spray. At the same time, the reasonable distribution of multiple spray holes can make the liquid distribution of the side spray more uniform, avoid the situation of insufficient spraying in local areas, and improve the side spraying effect.

[0034] like Figure 1 , Figure 3 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the first nozzle 4011 is X-shaped or Y-shaped. When the first nozzle 4011 is X-shaped or Y-shaped, the liquid delivered from the liquid supply port 302 can be diverted at the end, causing the liquid to be sprayed in multiple different directions, expanding the diffusion range of the end spray, enhancing the coverage capability of the end spray, and is suitable for scenarios that require spraying a large area directly in front of the nozzle.

[0035] In addition to the features of the above embodiments, this embodiment further specifies that the number of first spray holes 4011 is multiple. When the number of first spray holes 4011 is multiple, multiple independent spray water streams can be formed at the end of the nozzle assembly 4. These water streams work together to increase the coverage density and range of the end spray, improve the uniformity of the end area spray, and ensure that the area can be fully sprayed.

[0036] like Figure 1 , Figure 5 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the nozzle assembly 4 includes a spray pipe 41 and a locking member 42. The spray pipe 41 is detachably mounted on the liquid supply column 3, and the spray pipe 41 has spray holes 401. The locking member 42 is sleeved on the spray pipe 41, and a portion of the spray pipe 41 is clamped between the locking member 42 and the liquid supply column 3. The locking member 42 is detachably mounted on the liquid supply column 3. The clamping force applied to the spray pipe 41 by the locking member 42 can effectively enhance the stability of the connection between the spray pipe 41 and the liquid supply column 3, preventing loosening between the two due to liquid pressure fluctuations or device vibration during spraying, and ensuring the continuity of spraying operations. At the same time, both the spray pipe 41 and the locking member 42 are detachable, so that when the spray pipe 41 is damaged or needs cleaning, both can be easily disassembled for processing, reducing maintenance costs and difficulties.

[0037] like Figure 1 , Figure 5 and Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the locking member 42 includes a collar 421 and a locking plate 422. The collar 421 is sleeved on the spray pipe 41, and a portion of the spray pipe 41 is sandwiched between the collar and the liquid supply column 3. The locking plate 422 is disposed on the collar 421 and is detachably connected to the liquid supply column 3. The collar 421 is in full contact with the outer surface of the spray pipe 41, increasing the contact area and making the clamping force distribution more uniform, thereby better fixing the spray pipe 41 and preventing it from shifting during operation. The detachable connection between the locking plate 422 and the liquid supply column 3 not only achieves a stable connection between the locking member 42 and the liquid supply column 3, but also makes it easy to disassemble the locking member 42 when needed, facilitating the inspection or replacement of the spray pipe 41, and further improving the maintenance convenience of the device.

[0038] In addition to the features of the above embodiments, this embodiment further specifies that: the number of locking plates 422 is multiple, and the multiple locking plates 422 are disposed on the collar 421 and spaced apart circumferentially along the collar 421. The multiple locking plates 422 spaced apart circumferentially along the collar 421 can apply tension or pressure to the collar 421 from multiple directions, so that the collar 421 is firmly fixed to the spray pipe 41, avoiding local loosening due to force in a single direction, and improving the stability and uniformity of the collar 421 in fixing the spray pipe 41.

[0039] In addition to the features of the above embodiments, this embodiment further specifies that: one of the locking plate 422 and the liquid supply column 3 is provided with a limiting hole or a limiting groove, and the other of the locking plate 422 and the liquid supply column 3 is provided with a limiting protrusion, which engages with the limiting hole or the limiting groove. The engaging engagement of the limiting protrusion with the limiting hole or the limiting groove can play a positioning role when the locking plate 422 and the liquid supply column 3 are connected, ensuring accurate docking and avoiding misalignment during installation. At the same time, the engaging structure can provide a certain locking force after connection, preventing relative displacement between the two during device operation, ensuring the reliability of the connection, and this engagement method is simple to operate and facilitates quick assembly and disassembly.

[0040] like Figure 1 , Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines: the spray pipe 41 includes a mounting base 411, a liquid outlet pipe 412, and a sealing rib 413. The liquid outlet pipe 412 is disposed on the mounting base 411 and has spray holes 401. The sealing rib 413 is disposed on the mounting base 411 and surrounds the mounting base 411. The locking member 42 is sleeved on the liquid outlet pipe 412. The mounting base 411 is clamped between the locking member 42 and the liquid supply column 3. The sealing rib 413 is clamped between the locking member 42 and the mounting base 411. The sealing rib 413 surrounds the mounting base 411 and is located between the locking member 42 and the mounting base 411. Through the fixed cooperation between the locking member 42 and the liquid supply column 3, the gap between the two can be filled, effectively preventing liquid leakage from the connection point, improving the sealing performance of the device, reducing liquid waste and corrosion to other components. At the same time, the setting of the mounting base 411 can also further enhance the stability of the connection between the spray pipe 41 and the liquid supply column 3.

[0041] like Figure 1 , Figure 4 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the spray pipe 41 is sleeved on the liquid supply column 3. The sleeved structure between the spray pipe 41 and the liquid supply column 3 facilitates rapid positioning, ensures accurate alignment between the liquid supply port 302 and the internal channel of the spray pipe 41, and ensures smooth liquid flow. At the same time, the sleeved structure provides a certain guiding and supporting function, enhances the stability of the connection, and reduces assembly errors.

[0042] like Figure 1 and Figure 2As shown, in addition to the features of the above embodiments, this embodiment further defines: the spray support assembly 1 includes a support frame 11, a support net 12, and support rods 13. The support frame 11 is annular, the support net 12 is disposed on the support frame 11 and located inside the support frame 11, and the support rods 13 are disposed on the support frame 11 and located on both sides of the support frame 11. The annular support frame 11 has good structural strength and stability, providing a solid frame support for the entire device. The support net 12 is disposed inside the support frame 11 and can support items placed on it; the support rods 13 on both sides of the support frame 11 can not only place items but also provide auxiliary support for the items on the support net 12, ensuring the stability of the placed items while not affecting the flow of spray liquid, thus ensuring the smooth operation of the spraying operation.

[0043] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the spray channel assembly 2 includes a main liquid supply arm 21 and a liquid supply support arm 22, and the number of liquid supply support arms 22 is multiple, with multiple liquid supply support arms 22 disposed on the main liquid supply arm 21. A liquid supply column 3 is disposed on the liquid supply support arm 22, and the liquid supply column 3 and the liquid supply support arm 22 are integrally formed. The multiple liquid supply support arms 22 disposed on the main liquid supply arm 21 extend the liquid supply channel in multiple directions, expanding the liquid supply range. Multiple liquid supply columns 3 and nozzle assemblies 4 can be installed to achieve spraying operations over a larger area. The integral formation of the liquid supply column 3 and the liquid supply support arm 22 enhances structural strength and sealing performance, reduces the risk of breakage and leakage, and simultaneously reduces assembly steps, simplifies the manufacturing process, and lowers production costs.

[0044] Example 2

[0045] like Figures 1 to 7 As shown in the figure, this embodiment discloses a cleaning machine, including a spraying device.

[0046] The cleaning machine disclosed in this application features a detachable nozzle assembly 4, which facilitates equipment maintenance. When the nozzle assembly 4 becomes worn or clogged, it can be quickly disassembled for replacement or cleaning, reducing maintenance time and costs. Simultaneously, the stable structural connection of the spray device ensures continuous operation of the cleaning machine, and the excellent sealing performance reduces liquid leakage, ensuring efficient cleaning, extending equipment lifespan, and improving overall performance and economy.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spraying device, characterized in that, The spraying device includes: Sprayer support assembly (1); Spray channel assembly (2), the spray channel assembly (2) is disposed on the spray support assembly (1); Liquid supply column (3) is provided on the spray channel assembly (2). The liquid supply column (3) and the spray channel assembly (2) cooperate to form a liquid supply channel (301). The end of the liquid supply column (3) away from the spray channel assembly (2) is provided with a liquid supply port (302) that communicates with the liquid supply channel (301). The nozzle assembly (4) is detachably mounted on the liquid supply column (3). The nozzle assembly (4) has a spray hole (401) which is connected to the liquid supply port (302).

2. The spraying device according to claim 1, characterized in that, The nozzle assembly (4) and the liquid supply column (3) are detachably connected by threads; Alternatively, the nozzle assembly (4) may be connected to the liquid supply column (3) via a snap-fit ​​connection.

3. The spraying device according to claim 1, characterized in that, The spray hole (401) includes a first spray hole (4011) and a second spray hole (4012). The first spray hole (4011) is located at one end of the nozzle assembly (4) away from the liquid supply column (3), and the second spray hole (4012) is located on the side of the nozzle assembly (4).

4. The spraying device according to claim 3, characterized in that, The number of the second nozzles (4012) is multiple, and the multiple second nozzles (4012) are distributed on the side of the nozzle assembly (4); And / or the first nozzle (4011) is X-shaped or Y-shaped; And / or the number of the first nozzles (4011) is multiple.

5. The spraying device according to claim 1, characterized in that, The nozzle assembly (4) includes a spray pipe (41) and a locking member (42). The spray pipe (41) is detachably mounted on the liquid supply column (3). The spray pipe (41) has the spray hole (401). The locking member (42) is sleeved on the spray pipe (41). A portion of the spray pipe (41) is sandwiched between the locking member (42) and the liquid supply column (3). The locking member (42) is detachably mounted on the liquid supply column (3).

6. The spraying device according to claim 5, characterized in that, The locking component (42) includes a collar (421) and a locking plate (422). The collar (421) is sleeved on the spray pipe (41), and a portion of the spray pipe (41) is sandwiched between the collar and the liquid supply column (3). The locking plate (422) is disposed on the collar (421), and the locking plate (422) is detachably connected to the liquid supply column (3).

7. The spraying device according to claim 6, characterized in that, The number of locking plates (422) is multiple, and the multiple locking plates (422) are disposed on the collar (421) and spaced apart along the circumference of the collar (421); One or one of the locking plate (422) and the liquid supply column (3) is provided with a limiting hole or a limiting groove, and the other of the locking plate (422) and the liquid supply column (3) is provided with a limiting protrusion, which engages with the limiting hole or the limiting groove.

8. The spraying device according to claim 5, characterized in that, The spray pipe (41) includes a mounting base (411), a liquid outlet pipe (412), and a sealing rib (413). The liquid outlet pipe (412) is disposed on the mounting base (411) and has the spray hole (401). The sealing rib (413) is disposed on the mounting base (411) and surrounds the mounting base (411). The locking member (42) is sleeved on the liquid outlet pipe (412). The mounting base (411) is sandwiched between the locking member (42) and the liquid supply column (3). The sealing rib (413) is sandwiched between the locking member (42) and the mounting base (411). And / or the spray pipe (41) is fitted onto the liquid supply column (3).

9. The spraying device according to claim 1, characterized in that, The spray support assembly (1) includes a support frame (11), a support net (12) and a support rod (13). The support frame (11) is annular. The support net (12) is disposed on the support frame (11) and located inside the support frame (11). The support rod (13) is disposed on the support frame (11) and located on both sides of the support frame (11). And / or the spray channel assembly (2) includes a main liquid supply arm (21) and a liquid supply support arm (22), the number of the liquid supply support arms (22) is multiple, the multiple liquid supply support arms (22) are arranged on the main liquid supply arm (21), the liquid supply column (3) is arranged on the liquid supply support arm (22), and the liquid supply column (3) is integrally formed with the liquid supply support arm (22).

10. A cleaning machine, characterized in that, The cleaning machine includes: The spraying device according to any one of claims 1 to 9.

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