Multi-hole-site ice spraying opening switching device

Abstract

The utility model discloses a multi-hole-site ice spraying opening switching device which is used for connecting ice spraying openings of a dry ice cleaning machine to different cleaning pipelines. The device comprises a position cutting assembly, a clutch assembly and a plurality of communicating ports. Each communicating port is externally connected with a cleaning pipeline; the position cutting assembly is used for positioning any specified communication port to the axis direction of the ice spraying port, and the end, back on to the cleaning pipeline, of the communication port is opposite to the ice spraying port; the clutch assembly stretches out and draws back in the direction parallel to the axis of the ice spraying opening so as to drive the communicating opening and the ice spraying opening to be in sealed butt joint or separated. The device further comprises a controller to control movement of the cutting assembly and the clutch assembly. According to the device, the mode of manually replacing the cleaning pipeline is eliminated, one dry ice cleaning machine can serve multiple terminals, manpower is liberated, the cleaning efficiency is improved, and the configuration cost of a cleaning system is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dry ice cleaning, in particular to a multi-hole ice spray port switching device. Background Art

[0002] Dry ice blasting is a cleaning system that uses high-pressure air to spray dry ice powder onto the surface of the object being cleaned. When the extremely cold dry ice particles come into contact with dirt, they cause a brittle explosion, shrinking and loosening the dirt. Simultaneously, the dry ice particles vaporize and expand rapidly, generating a tremendous peeling force that quickly and thoroughly removes dirt from the surface.

[0003] Most of the dry ice cleaning machines currently in widespread use are equipped with a single spray channel. To clean multiple terminals, it is often necessary to manually disassemble and reconnect multiple external cleaning pipelines to the dry ice cleaning machine's ice spray port in turn. Since dry ice cleaning machines require high airtightness of the pipelines and high precision in connection operations, the traditional method of disassembly and connection is particularly time-consuming and labor-intensive, resulting in low cleaning efficiency. In addition, there are a few large dry ice cleaning machines equipped with multiple spray channels to clean multiple terminals simultaneously. However, the decentralized ice spray mode will reduce the working air pressure in the pipeline, resulting in poor cleaning effect; moreover, this mode does not have the function of switching the cleaning pipelines and cannot meet special usage needs. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide a multi-hole ice spray port switching device, which switches the ice spray port of the dry ice cleaning machine to different cleaning pipelines, so that one dry ice cleaning machine can serve multiple terminals.

[0005] In order to solve the above technical problems, the utility model provides a multi-hole ice spray port switching device for connecting the ice spray port of a dry ice cleaning machine to different cleaning pipelines; the device includes a cutting assembly, a clutch assembly and a plurality of connecting ports;

[0006] The communication port is externally connected to a cleaning pipeline;

[0007] The cutting assembly positions any designated communication port in the axial direction of the ice spraying port by translation or rotation, and the end of the communication port facing away from the cleaning pipeline is arranged opposite to the ice spraying port; the clutch assembly extends and retracts in a direction parallel to the axis of the ice spraying port to drive the communication port to be tightly docked or separated from the ice spraying port.

[0008] In a preferred embodiment, the device further comprises a controller; the movements of the cutting assembly and the clutch assembly are directly or indirectly controlled by the controller.

[0009] In a preferred embodiment, the cutting assembly includes a driving member, an output shaft and a movable base;

[0010] The output shaft extends axially from the driving member; the movable base performs translational motion or rotational motion through direct or indirect transmission cooperation with the output shaft.

[0011] In a preferred embodiment, the clutch assembly includes a clutch; the clutch includes a piston rod;

[0012] One end of the piston rod close to the ice spraying port extends outward; the piston rod has a telescopic freedom in a direction parallel to the axis of the ice spraying port, so as to directly or indirectly drive the communication port and the ice spraying port to be sealed and connected or separated.

[0013] In a preferred embodiment, the cutting assembly is a straight rail type;

[0014] The output shaft extends in a direction perpendicular to the axis of the ice-blasting port; and the movable base passively slides along the extending direction of the output shaft through the transmission cooperation.

[0015] In a preferred embodiment, the cutting assembly also includes a track frame; the track frame is covered on the outer periphery of the output shaft along the extension direction of the output shaft; the movable base is arranged on the top of the track frame and is slidably connected to the track frame along the extension direction.

[0016] In a preferred embodiment, the device further comprises a working plate;

[0017] The working plate is fixed to one end of the clutch assembly facing the ice spraying port and is perpendicular to the axial direction of the ice spraying port; the working plate moves in a direction close to or away from the ice spraying port under the drive of the clutch assembly;

[0018] The clutch assembly is fixed on the top of the movable base, and moves together with the working plate along the extending direction of the output shaft under the drive of the movable base.

[0019] In a preferred embodiment, the communication opening is provided through the thickness direction of the working plate; and the plurality of communication openings are spaced apart and distributed on a straight line parallel to the output shaft.

[0020] In a preferred embodiment, the cutting assembly is of rotary type;

[0021] The output shaft extends in a direction parallel to the axis of the ice spraying port; the movable base extends outward in the radial direction of the output shaft and passively rotates around the output shaft through the transmission cooperation.

[0022] In a preferred embodiment, the communication opening is provided through the thickness direction of the movable base; and the plurality of communication openings are distributed at intervals on the same circumference of the movable base.

[0023] In a preferred embodiment, the clutch assembly further comprises a connecting plate; the connecting plate can move back and forth in a direction parallel to the axis of the ice blasting port under power drive;

[0024] The connecting plate and the movable base are limitedly matched along the axial direction of the output shaft to drive the cutting assembly to move in a direction close to or away from the ice spraying port.

[0025] In a preferred embodiment, the driving member is a stepping motor or a servo motor.

[0026] In a preferred embodiment, a sealing ring is provided at one end of the communication port facing the ice spraying port.

[0027] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0028] The multi-hole ice spray port switching device provided by this utility model utilizes the switching assembly to switch any designated connection port to the axis of the ice spray port. The clutch assembly achieves sealed docking and separation between the connection port and the ice spray port. Simultaneously, the controller automates the operation, allowing the ice spray port to be flexibly switched and connected between different cleaning pipelines. This device eliminates the traditional cleaning pipeline replacement method, allowing a single dry ice cleaning machine to serve multiple terminals. This not only frees up manpower and improves cleaning efficiency, but also significantly reduces the configuration cost of the cleaning system.

[0029] The multi-hole ice spray port switching device provided by this utility model utilizes a high-precision drive element, such as a stepper motor or servo motor, to precisely control the displacement of the connection port. A sealing ring is provided at the end of the connection port, ensuring airtight connection with the ice spray port. The motion variables of the cutting assembly and the clutch assembly are precisely controlled by the controller. Consequently, the device has high positioning accuracy and connection stability.

[0030] The multi-hole ice spray port switching device provided by this utility model is compatible with existing dry ice blasting machines only through the connection port. This means that the device can be widely used in most dry ice blasting machines simply by adjusting the specifications of the connection port. Furthermore, the device has a simple structure, convenient operation, high flexibility, and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a first view of the multi-hole ice spray port switching device according to the first embodiment of the present invention when working with a dry ice cleaning machine;

[0032] Figure 2 This is a second view (partial) of the multi-hole ice spray port switching device according to the first embodiment of the present invention when working with a dry ice cleaning machine;

[0033] Figure 3 This is a three-dimensional schematic diagram of the multi-hole ice spray port switching device described in Example 1 of the present utility model;

[0034] Figure 4 This is a top view of the multi-hole ice spray port switching device described in Example 1 of the present utility model;

[0035] Figure 5 This is a partial cross-sectional schematic diagram of the cutting assembly described in Example 1 of the present utility model;

[0036] Figure 6 This is a top view of the multi-hole ice spray port switching device described in Example 2 of the present utility model;

[0037] Figure 7 Schematic diagram of a preferred alternative to the movable base described in Example 2 of the present utility model (7A is an exploded schematic diagram from the front, and 7B is an exploded schematic diagram from the top).

[0038] Marked in the figure: 1-multi-hole ice spray port switching device, 2-cutting assembly, 21-driving member, 22-output shaft, 220-screw rod, 221-first transmission member, 23-movable base, 24-reversing transmission member, 25-track frame, 3-clutch assembly, 31-clutch, 32-connecting plate, 310-cylinder, 311-piston rod, 312-cylinder wall, 4-working plate, 5-connecting port, 51-sealing ring, 6-dry ice cleaning machine, 7-ice spray port, 8-connecting rod, 9-support. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] Example 1

[0043] like Figures 1 to 5 As shown, an embodiment of the present invention provides a multi-hole ice spray port switching device 1 for connecting the ice spray port 7 of a dry ice cleaning machine 6 to different cleaning pipelines. The device 1 includes a cutting assembly 2, a clutch assembly 3 and a plurality of connecting ports 5. Each of the connecting ports 5 is externally connected to a cleaning pipeline. In general, the cutting assembly 2 is used to position any designated connecting port 5 in the axial direction of the ice spray port 7, and the end of the connecting port 5 facing away from the cleaning pipeline is arranged opposite to the ice spray port 7. The clutch assembly 3 extends and retracts in a direction parallel to the axis of the ice spray port 7, driving the connecting port 5 to be tightly docked or separated from the ice spray port 7. When the connecting port 5 is separated from the ice spray port 7, the cutting assembly 2 can switch different connecting ports 5 to the axial direction of the ice spray port 7 by translation or rotation. Furthermore, the device 1 is also provided with a controller, and the movement of the cutting assembly 2 and the clutch assembly 3 is directly or indirectly controlled by the controller.

[0044] like Figures 1 to 5As shown, in this embodiment, the cutting assembly 2 is a straight track structure. The cutting assembly 2 includes a drive member 21, an output shaft 22, a reversing transmission member 24, a track frame 25, and a movable base 23. To ensure that the connecting port 5 can be accurately positioned in the axial direction of the ice-blasting port 7, the drive member 21 adopts a stepper motor or a servo motor. It should be understood that as long as the same technical purpose can be achieved, the specific form of the drive member 21 should not be limited. The output shaft 22 extends from the axial direction of the drive member 21 and extends in a direction perpendicular to the axis of the ice-blasting port 7. In this embodiment, the surface of the output shaft 22 is provided with a thread, so it is defined as a screw rod 220 below. The track frame 25 is arranged on the outer periphery of the screw rod 220 along the axial direction of the screw rod 220, and the bottom is connected to the dry ice cleaning machine 6 through a plurality of connecting rods 8. For the convenience of the following description, the direction parallel to the axis of the screw rod 220 is defined as the longitudinal direction of the device 1. The movable base 23 is arranged on the top of the track frame 25 and has the freedom of sliding along the longitudinal direction of the track frame 25. The reversing transmission member 24 is sleeved on the outer circumference of the screw rod 220 and is threadedly engaged with the screw rod 220. In the circumferential direction of the screw rod 220, the reversing transmission member 24 is limitedly engaged with the track frame 25, and the screw rod 220 is bearing engaged with the track frame 25. In this way, the active rotation of the screw rod 220 is converted into the passive movement of the reversing transmission member 24 in the longitudinal direction. The reversing transmission member 24 is fixedly connected to the movable base 23 or is limitedly engaged in the longitudinal direction, thereby driving the movable base 23 to slide along the longitudinal direction of the track frame 25. For those skilled in the art, as a common existing technical means in mechanical engineering, there are many ways to achieve reversing transmission between the screw rod 220 and the movable base 23. Therefore, this article explains this part in order to reflect the feasibility of this technical solution, rather than a restrictive description.

[0045] like Figures 1 to 5As shown, two sets of clutch assemblies 3 are longitudinally spaced apart on the movable base 23. The clutch assembly 3 comprises a clutch 31 and a connecting plate 32. In this embodiment, the clutch 31 is a cylinder 330 comprising a cylinder wall 312 and a piston rod 311. The cylinder wall 312 defines at least one air chamber within which a piston rod 311 passes. When the device 1 is operating in conjunction with the dry ice cleaning machine 6, the track frame 25 must be perpendicular to the axis of the ice-blasting port 7, while the piston rod 311 must move parallel to the axis of the ice-blasting port 7. Therefore, for the device 1 itself, the arrangement of the air chamber and the piston rod 311 is perpendicular to the extension direction of the track frame 25. For ease of description, the extension direction of the piston rod 311 is defined as the transverse direction of the device 1. The end of the piston rod 311, closest to the ice-blasting port 7, extends out of the cylinder 330 and is in airtight sliding connection with the cylinder wall 312. The piston rod 311 extends radially outward from the air chamber to form a partition. This partition is in airtight sliding connection with the cylinder wall 312, dividing the air chamber into two independent sub-chambers. An external bidirectional air pump simultaneously supplies air to one sub-chamber and evacuates air from the other at high power, creating a significant pressure differential between the two sub-chambers, thereby driving the piston rod 311 to rapidly pump axially.

[0046] like Figures 1 to 5 As shown, for each cylinder 330, one of the extended ends of the piston rod 311 is fixedly connected to a connecting plate 32, and a working plate 4 is disposed between the two connecting plates 32. The working plate 4 is provided with a plurality of connecting ports 5 extending through the thickness thereof, and the plurality of connecting ports 5 are spaced apart and distributed along a straight line parallel to the screw rod 220. When the device 1 is operating in conjunction with the dry ice cleaning machine 6, at least one of the connecting ports 5 is axially opposed to the ice-blasting port 7. In this way, the clutch assembly 3, through the rapid ejection or retraction of the piston rod 311, drives the connecting port 5 to move toward or away from the ice-blasting port 7.

[0047] To achieve a relatively stable transmission effect, the device 1 provided in this embodiment is equipped with two sets of cylinders 330, each of which is equipped with three air chambers. It is understood that the number of air chambers in the cylinders 330 can vary, and this document does not limit this. Similarly, in other embodiments, the number of cylinders 330 can be one or more than two. Overall, in other embodiments, the clutch 31 can be operated not by pneumatic means, but by electric or electromagnetic means.

[0048] As shown in the figure and the foregoing description, the drive member 21, via the screw rod 220 and the reversing transmission member 24, drives the movable base 23 to move longitudinally along the track frame 25, thereby driving the connecting port 5 to move longitudinally along the track frame 25, thereby switching the ice-spraying port 7 between different connecting ports 5. Once the connecting port 5 is aligned with the ice-spraying port 7, the clutch assembly 3, via the expansion and contraction of the piston rod 311, drives the connecting port 5 to connect or disconnect with the ice-spraying port 7. For dry ice cleaning machines, the pipelines used to transport dry ice must be highly airtight, requiring high precision in controlling the longitudinal and lateral displacement of the connecting port 5 during the switching process.

[0049] In terms of structural design, the multiple connecting ports 5 are arranged on the same plane and along the same straight line, which is parallel to the extension direction of the track frame 25. In practical application, the connecting ports 5 are at the same height relative to the track frame 25 and are at the same vertical distance from the ice-spraying port 7. Furthermore, a sealing ring 51 is provided on the end of the connecting port 5 facing the ice-spraying port 7 to ensure a sealed connection with the ice-spraying port 7. Regarding system control, the driver 21 utilizes a stepper motor or servo motor. The unit rotation stroke, total rotation stroke, and rotation direction of the driver 21 during any switching process are precisely controlled by a controller, ensuring precise longitudinal displacement of the connecting ports 5 during switching. For this reason, the spacing between the connecting ports 5 is controlled by the controller, which is not a limitation for comparison purposes herein. Secondly, the controller synchronously controls the air supply and extraction of the bidirectional air pump connected to each cylinder 330, ensuring precise and sealed connection between the connecting ports 5 and the ice-spraying port 7. Therefore, in order to cooperate with the operation of the controller, the device 1 and the dry ice cleaning machine 6 need to be calibrated when they are paired and installed for the first time.

[0050] In this embodiment, the controller is a programmable logic controller (PLC). A purge line is connected to the end of the connecting port 5 facing away from the ice-blasting port 7. This purge line can lead to different terminals or to different surfaces of the same terminal. Upon receiving a switching command from the terminal system, the PLC controls the device 1 to enter a switching process. First, upon receiving a first pulse signal from the PLC, the external bidirectional air pump supplies and evacuates air to the different sub-chambers, causing the piston rod 311 to retract and separate the initial connecting port 5 from the ice-blasting port 7. Next, upon receiving a second pulse signal from the PLC, the driver 21 rotates by a set rotational stroke, positioning the designated vent 5 in the direction of the axis of the ice-blasting port 7. Subsequently, upon receiving a third pulse signal from the PLC, the bidirectional air pump reversely evacuates and supplies air to the sub-chambers, pushing the piston rod 311 forward and sealingly connecting the designated connecting port 5 to the ice-blasting port 7. Thus, the device 1 completes a switching process.

[0051] Example 2

[0052] like Figure 6 This embodiment provides a multi-hole ice spray port switching device 1. The core difference between this device 1 and the first embodiment is that the cutting assembly 2 is a rotary type. Accordingly, the configuration of the connecting plate 32 and the communication port 5 also differs.

[0053] Specifically, the output shaft 22 of the driving member 21 is parallel to the axis of the ice spray nozzle 7, and a first transmission member 221 is provided at the end. In this embodiment, the first transmission member 221 is a gear. The movable base 23 is circular and extends radially outward along the output shaft 22. The movable base 23 is provided with a clearance hole with irregular edges at the center of the circle to cooperate with the first transmission member 221. In particular, in this embodiment, the movable base 23 is slidably connected to the output shaft 22 along the axis of the output shaft 22.

[0054] The movable base 23 is provided with a plurality of communication ports 5 along its thickness, and the plurality of communication ports 5 are spaced apart and distributed along the same circumference of the movable base 23, forming an overall shape similar to the cylinder of a revolver. It is understood that the rotational displacement of the movable base 23 is controlled by the controller, and this document does not restrict whether the plurality of communication ports 5 are arranged at equal intervals. When the device 1 is operating in conjunction with the dry ice cleaning machine 6, any of the communication ports 5 is located in the axial direction of the ice blasting port and is arranged opposite the ice blasting port. The drive member 21 drives the movable base 23 to rotate via the output shaft 22, aligning different communication ports 5 with the ice blasting port to achieve switching of the communication ports 5.

[0055] To achieve axially sealed connection and separation between the connecting port 5 and the ice-spraying port, the connecting plate 32 of the clutch assembly 3 engages with the movable base 23 in a transversely limited manner. This allows the clutch assembly 3 to move the movable base 23 toward or away from the ice-spraying port through the extension and retraction of the piston rod 311. Essentially, the connecting plate 32 and the movable base 23 are flexibly connected to each other to prevent interference with the rotation of the movable base 23.

[0056] Furthermore, in terms of overall structure, the device 1 is provided with a support 9, and the driving member 21 and the cylinder 330 are both fixed on the support 9. The support 9 is connected to the dry ice cleaning machine 6 via a plurality of connecting rods 8.

[0057] As an equivalent alternative to this embodiment, in other embodiments, the movable base 23 is fixedly connected to the output shaft 22 along the axis of the output shaft 22, while the driving member 21 is slidably connected to the support 9. In this way, the clutch assembly 3 drives the entire cutting assembly 2 to slide toward or away from the ice spraying port 7.

[0058] like Figure 7 As a preferred alternative, the movable base 23 can adopt a structure similar to a handwheel-type shower head. The movable base 23 includes a first panel 231 and a second panel. The first panel 231 and the second panel 232 are rotatably connected, with the first panel 501 positioned on the side of the second panel 502 near the ice-spraying port 7. The first panel 231 is provided with a first docking port 501, which is aligned with the ice-spraying port 7. The edge of the first docking port 501 is provided with the sealing ring 51, which seals the docking port 7. The second panel 232 is provided with a plurality of second docking ports 502 at equal intervals along the circumference, with the rotation path of the second docking ports 502 passing through the first docking ports 501. The second panel 232 is in driving engagement with the output shaft 22 through the clearance hole 230. Driven by the output shaft 22, the second panel 232 rotates relative to the first panel 231, aligning one of the second docking ports 502 with the first docking port 501. The advantage of this alternative solution is that, referring to the rotating structure of the handwheel shower head, the first interface 501 can be directly and always kept in a sealed docking with the ice spray port 7, and the second interface 502 does not need to move along the axial direction of the output shaft 22 to achieve a sealed docking and separation with the first interface 501, thereby getting rid of the dependence on the clutch assembly 3.

[0059] It should be understood that the core essence of this embodiment is the rotary structure of the cutting position assembly 2. Those skilled in the art will recognize numerous methods for achieving the sealed connection and separation between the connecting port 5 and the ice spray port 7. This description is provided herein to illustrate the feasibility of this technical solution and should not be construed as limiting. Therefore, any non-substantial modifications to this technical solution do not deviate from the scope of protection of this utility model.

[0060] Except for the above differences, the rest of the device 1 provided in this embodiment is the same as that in the first embodiment.

[0061] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any technical equivalent transformation made using the contents of the present invention specification falls within the protection scope of the present invention.

Claims

1. A multi-hole ice spray port switching device for connecting the ice spray ports of a dry ice cleaning machine to different cleaning pipelines, characterized by: The device includes a cutting component, a clutch component and a plurality of communication ports; The communication port is externally connected to a cleaning pipeline; The cutting assembly positions any designated communication port in the axial direction of the ice spraying port by translation or rotation, and the end of the communication port facing away from the cleaning pipeline is arranged opposite to the ice spraying port; the clutch assembly extends and retracts in a direction parallel to the axis of the ice spraying port to drive the communication port to be tightly docked or separated from the ice spraying port.

2. The multi-hole ice spray nozzle switching device according to claim 1, characterized in that: The device further comprises a controller; the movements of the cutting assembly and the clutch assembly are directly or indirectly controlled by the controller.

3. The multi-hole ice spray nozzle switching device according to claim 1, characterized in that: The cutting assembly includes a driving member, an output shaft and a movable base; The output shaft extends axially from the driving member; the movable base performs translational motion or rotational motion through direct or indirect transmission cooperation with the output shaft.

4. The multi-hole ice spray nozzle switching device according to claim 1, characterized in that: The clutch assembly includes a clutch; the clutch includes a piston rod; One end of the piston rod close to the ice spraying port extends outward; the piston rod has a telescopic freedom in a direction parallel to the axis of the ice spraying port, so as to directly or indirectly drive the communication port and the ice spraying port to be sealed and connected or separated.

5. The multi-hole ice spray nozzle switching device according to claim 3, characterized in that: The cutting assembly is a straight rail type; The output shaft extends in a direction perpendicular to the axis of the ice-blasting port; and the movable base passively slides along the extending direction of the output shaft through the transmission cooperation.

6. The multi-hole ice spray nozzle switching device according to claim 5, characterized in that: The cutting assembly further includes a track frame; the track frame is arranged on the outer periphery of the output shaft along the extension direction of the output shaft; the movable base is arranged on the top of the track frame and is slidably connected to the track frame along the extension direction.

7. The multi-hole ice spray nozzle switching device according to claim 5, characterized in that: The device also includes a working plate; The working plate is fixed to one end of the clutch assembly facing the ice spraying port and is perpendicular to the axial direction of the ice spraying port; the working plate moves in a direction close to or away from the ice spraying port under the drive of the clutch assembly; The clutch assembly is fixed on the top of the movable base, and moves together with the working plate along the extending direction of the output shaft under the drive of the movable base.

8. The multi-hole ice spray nozzle switching device according to claim 7, characterized in that: The communication opening is arranged to penetrate the thickness direction of the working plate; and the plurality of communication openings are distributed at intervals on a straight line parallel to the output shaft.

9. The multi-hole ice spray nozzle switching device according to claim 3, characterized in that: The cutting component is a rotary type; The output shaft extends in a direction parallel to the axis of the ice spraying port; the movable base extends outward in the radial direction of the output shaft and passively rotates around the output shaft through the transmission cooperation.

10. The multi-hole ice spray nozzle switching device according to claim 9, characterized in that: The communication opening is arranged to penetrate the thickness direction of the movable base; and the plurality of communication openings are distributed at intervals on the same circumference of the movable base.

11. The multi-hole ice spray nozzle switching device according to claim 9, characterized in that: The clutch assembly further includes a connecting plate; the connecting plate can move back and forth in a direction parallel to the axis of the ice spraying port under power drive; The connecting plate and the movable base are limitedly matched along the axial direction of the output shaft to drive the cutting assembly to move in a direction close to or away from the ice spraying port.

12. The multi-hole ice spray nozzle switching device according to claim 3, characterized in that: The driving element is a stepping motor or a servo motor.

13. A multi-hole ice spray nozzle switching device according to any one of claims 1 to 12, characterized in that: A sealing ring is provided at one end of the communication port facing the ice spraying port.

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