A stage performance device simulating a snowing environment

Abstract

This invention belongs to the field of performing arts equipment technology, and specifically mentions a stage performance device simulating a snowy environment. It includes a stage support frame, an air supply component, and an array of fixed frames fixed to the stage support frame. Each of the fixed frames is rotatably connected to an outer cylinder of a snow machine. An inner cylinder of the snow machine is fixed to the outer cylinder, and an air guide ring is fixed to the inner cylinder. The air guide ring has a foaming outer cylinder with an array of circumferentially distributed first openings. An inner cylinder is also connected to the outer cylinder, and a second opening is formed on the inner cylinder. This invention guides the air through the air guide ring, reducing the shear force exerted on the foam by the wind, ensuring the stability of the formed foam. The relative rotation of the outer and inner cylinders shears and separates the foam, while the air supply component blows the foam to a designated location, thus stably and effectively generating foam and ensuring the regular size and shape of the snowflakes.

Description

Technical Field

[0001] This invention relates to the field of performing arts equipment technology, and in particular to a stage performance device that simulates a snowy environment. Background Technology

[0002] Simulated snow effects are a core visual element in stage performances, including theater, musicals, live-action shows, and film and television stage lighting. Stage snow simulations often utilize foam snow machines, which use a foaming machine to generate a large amount of fine foam that falls from the air to simulate a snowy environment. Existing devices typically rely on airflow to blow the foam out of a foam net. The foam is separated by the shear force created by the foam net and the wind, and then propelled into the air by the airflow within the snow machine.

[0003] In actual operation, the mechanical vibrations generated by existing snow fans are transmitted to the airflow, causing fluctuations in the exhaust air. When the wind speed increases, the wind speed inside the snow machine increases, leading to increased shear force on the foam, resulting in smaller foam size. The increased wind speed also increases the distance the snowflakes are blown, causing changes in the snowfall area. Conversely, when the wind speed decreases, the wind speed inside the snow machine decreases, leading to increased shear force on the foam, resulting in larger foam size. The decreased wind speed also reduces the distance the snowflakes are blown, causing a shift in their landing position. This affects the realism of the snowmaking. These changes in snowflake size and landing position disrupt the spatial stability and visual continuity of the snowfall scene, impacting the overall realism of the simulated environment. Summary of the Invention

[0004] To overcome the drawback of snowflake size adjustment affecting the snowflake's falling position, this invention provides a stage performance device that simulates a snowy environment.

[0005] The technical implementation of this invention is as follows: A stage performance device simulating a snowy environment includes a stage support frame, an air supply component, an oil supply component, and an array of fixed frames fixedly connected to the stage support frame. Each of the arrayed fixed frames is rotatably connected to a snow machine outer cylinder. The snow machine outer cylinder is connected to the air outlet pipe of the air supply component via a connecting pipe. An inner cylinder of the snow machine is fixedly connected to the outer cylinder, and an air guide ring is fixedly connected to the inner cylinder. The air guide ring is equipped with a foaming outer cylinder, and an array of... The foaming outer cylinder has a first opening arranged in a row and circumferentially. The foaming outer cylinder is provided with a foaming inner cylinder. The foaming inner cylinder has a second opening corresponding to the first opening on the foaming outer cylinder. The foaming outer cylinder is used to seal the second opening on the foaming inner cylinder. The foaming inner cylinder is connected to the oil outlet pipe of the oil supply component. The stage support is fixedly connected to a drive module. The output shaft of the drive module drives the foaming inner cylinder to rotate through a gear set. The snow machine outer cylinder is provided with an auxiliary detachment component, which is used to assist the foam in detaching from the foaming outer cylinder.

[0006] Furthermore, the auxiliary release assembly includes a piston cylinder fixedly connected to the outer cylinder of the snow machine. The outer cylinder has symmetrically distributed air holes at the first opening. The outer cylinder has circumferentially distributed channels. The arrayed and symmetrically distributed air holes on the outer cylinder are all connected to the corresponding channels. An air inlet pipe and an air supply pipe assembly are fixedly connected to and connected to the piston cylinder. Both the air inlet pipe and the air supply pipe assembly are equipped with one-way valves. The channels are fixedly connected to and connected to the air supply pipe assembly. A drive assembly is provided on the outer cylinder of the snow machine for supplying air to the air holes on the outer cylinder.

[0007] Furthermore, the air guide ring is configured as a trumpet shape, and the opening area of ​​the air guide ring on the side closer to the piston cylinder is smaller than the opening area on the side farther away from the piston cylinder. The air guide ring is used to make the airflow transition smoothly.

[0008] Furthermore, the drive assembly includes a piston rod slidably connected to the piston cylinder, a guide groove is provided inside the piston rod, the piston rod rotates and is slidably connected to a rotating rod, the rotating rod is fixedly connected to the output shaft of the drive module, and a protrusion is provided on the rotating rod, the protrusion being located and sliding within the guide groove of the piston rod.

[0009] Furthermore, the air supply pipe assembly is equipped with an air volume adjustment module, which is used to control the air volume entering all the channels, so that the air volume of all the air holes of the foaming outer cylinder gradually decreases from top to bottom.

[0010] Furthermore, the first opening on the foamed outer cylinder is an oval hole.

[0011] Furthermore, the first opening on the foaming outer cylinder is provided with an inclined surface, which is used to guide the flow of foam.

[0012] Furthermore, the surface of the foamed outer cylinder is coated with a Teflon coating.

[0013] Furthermore, it also includes symmetrically arranged push rods, which are fixed to the adjacent outer cylinder of the snow machine. The telescopic end of the push rod is fixed to the adjacent foaming outer cylinder. The foaming outer cylinder is rotatably and slidably connected to the foaming inner cylinder. The foaming outer cylinder is slidably connected to the air guide ring.

[0014] Furthermore, it also includes an array of regulating valves, which are installed on the connecting pipes of adjacent outer cylinders of the snow machine, and are used to regulate the airflow entering the outer cylinder of the snow machine.

[0015] Combining the above technical solutions, the present invention has the following advantages: The present invention guides the wind through the air guide ring, reducing the influence of the wind on the shear force applied to the foam, ensuring the stability of the formed foam, and using the relative rotation of the outer foaming cylinder and the inner foaming cylinder to shear and separate the foam, while the air supply component blows the foam to the designated position, thereby stably and effectively generating foam and ensuring that the snowflakes are of regular size and shape.

[0016] This invention uses a piston rod to compress the air inside the piston cylinder, causing some of the air to be discharged through the air hole on the first opening of the outer foaming cylinder. This air is then used to blow the foam that has been sheared between the outer and inner foaming cylinders, helping the foam to detach from the outer foaming cylinder and reducing the occurrence of foam sticking to the outside of the outer foaming cylinder, thereby ensuring the effect of snowflake simulation.

[0017] This invention uses a push rod to cause the outer foaming cylinder and the inner foaming cylinder to alternate, changing the overlapping area of ​​the first opening of the outer foaming cylinder and the second opening of the inner foaming cylinder, thereby adjusting the size of the foam. The regulating valve adjusts the wind speed entering the outer cylinder of the snow machine, changing the initial kinetic energy provided by the gas to the foam, thereby adjusting the falling position and ensuring the best effect of simulated snowfall. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the air supply component and oil supply component of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the fixing frame and the outer cylinder of the snow machine of the present invention.

[0021] Figure 4 This is a three-dimensional structural cross-sectional view of the outer cylinder of the snowflake machine of the present invention.

[0022] Figure 5 This is a three-dimensional structural cross-sectional view of the outer cylinder and inner cylinder of the snow machine of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the foamed outer cylinder of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the foamed inner cylinder of the present invention.

[0025] Figure 8 This is an exploded three-dimensional view of the foamed outer cylinder and foamed inner cylinder of the present invention.

[0026] Figure 9 For the present invention Figure 8 A magnified view of a portion of point A in the middle.

[0027] Figure 10 This is a three-dimensional structural diagram of the piston cylinder of the present invention.

[0028] Figure 11 This is a three-dimensional structural cross-sectional view of the piston cylinder of the present invention.

[0029] Figure 12 This is a three-dimensional structural cross-sectional view of the piston cylinder and piston rod of the present invention.

[0030] Figure 13 This is an exploded three-dimensional view of the piston cylinder, piston rod, and rotating rod of the present invention.

[0031] The symbols in the attached diagram represent: 1-Stage support, 2-Air supply assembly, 3-Oil supply assembly, 4-Fixed frame, 5-Snow machine outer cylinder, 6-Snow machine inner cylinder, 7-Air guide ring, 8-Foaming outer cylinder, 9-Foaming inner cylinder, 10-Drive module, 20-Piston cylinder, 21-Channel, 22-Air inlet pipe, 23-Air supply pipe assembly, 24-Air volume adjustment module, 30-Piston rod, 31-Rotating rod, 40-Push rod, 41-Regulating valve Detailed Implementation

[0032] In this document, reference to embodiments means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. Example 1

[0033] A stage performance installation that simulates a snowy environment, such as Figures 1-8As shown, the system includes a stage support 1, an air supply assembly 2 (a conventional blower), and an oil supply assembly 3. The oil supply assembly 3 consists of a snowflake oil tank, an oil pump, an oil pipeline, and a foam machine. The foam machine is located inside the oil pipeline and close to a fixed frame 4. The foam machine uses high-pressure air to agitate the snowflake oil, turning it into foam. The stage support 1 is fixedly connected to three fixed frames 4 arranged in an array (this number is only an example; the actual number can be changed according to the actual situation). Each fixed frame 4 is fixedly connected to an electric push rod. Each of the arrayed fixed frames 4 is rotatably connected to a snow machine outer cylinder 5. The telescopic end of the electric push rod on the fixed frame 4 is fixedly connected to the snow machine outer cylinder 5. The electric push rod is a conventional device used to adjust the orientation of the snow machine outer cylinder 5. The snow machine outer cylinder 5 is connected to the air outlet pipe of the air supply assembly 2 via a connecting pipe. A snow machine inner cylinder 6 is fixedly connected to the snow machine outer cylinder 5, and the air inside the snow machine outer cylinder 5 passes through the outer cylinder. 5. The air is discharged from the inner cylinder 6 of the snow machine. The inner cylinder 6 divides the outer cylinder 5 of the snow machine into two parts. The connecting pipe of the outer cylinder 5 is directly opposite the inner cylinder 6, so that the air intake on the inner side of the inner cylinder 6 is greater than that on the outer side. The air velocity is high and the pressure is low on the inner side of the inner cylinder 6, while the air velocity is slow and the pressure is high on the outer side. This causes the foam to move towards the center at the outlet of the inner cylinder 6, increasing the travel distance of the foam. The outer cylinder 5 of the snow machine is provided with an inclined part at the spray position, so that the gas passes through the inclined part and gathers towards the center, reducing the dispersion range of the foam and ensuring the travel distance of the foam. The cross-sectional area of ​​the inner cylinder 6 of the snow machine decreases step by step. According to the Venturi effect, the wind speed will increase step by step, increasing the driving force on the foam, thereby increasing the spray distance of the foam. The inner cylinder 6 of the snow machine is fixedly connected to an air guide ring 7. The air guide ring 7 is set in a trumpet shape. The front opening area of ​​the air guide ring 7 is larger than the rear opening area. The trumpet-shaped air guide ring 7 is used to make the airflow transition smoothly.The air guide ring 7 is equipped with a foamed outer cylinder 8. In this embodiment, the air guide ring 7 and the foamed outer cylinder 8 are fixedly connected. The surface of the foamed outer cylinder 8 is coated with a Teflon coating to reduce foam adhesion to the foamed outer cylinder 8 and extend its service life. The foamed outer cylinder 8 has an array of circumferentially distributed first openings. The first openings on the foamed outer cylinder 8 are oval holes, which help improve structural strength and lifespan, and ensure precise fit and smooth shearing action between the foamed outer cylinder 8 and the foamed inner cylinder 9. The first opening on the foamed outer cylinder 8 is provided with a slope, which is used to guide the flow of foam. In this embodiment, the foamed outer cylinder 8 and the foamed inner cylinder 9 are connected in a fixed manner. The inner cylinder 9 is rotatably connected. A second opening corresponding to the first opening on the outer foam cylinder 8 is provided on the inner foam cylinder 9. The inner foam cylinder 9 is connected to the oil outlet pipe of the oil supply assembly 3. When the first opening of the outer foam cylinder 8 and the second opening of the inner foam cylinder 9 are aligned, foam can flow out through the opening. When the openings are not aligned, the outer foam cylinder 8 seals the second opening on the inner foam cylinder 9. A drive module 10 is fixedly connected to the stage support 1. The drive module 10 is an existing reciprocating motor. The output shaft of the drive module 10 drives the inner foam cylinder 9 to rotate through a gear set. An auxiliary detachment assembly is provided on the outer cylinder 5 of the snow machine. The auxiliary detachment assembly is used to assist the foam in detaching from the outer foam cylinder 8.

[0034] like Figures 3-6 and Figures 8-11 As shown, the auxiliary release assembly includes a piston cylinder 20, which is fixedly connected to the outer cylinder 5 of the snow machine. Two symmetrically distributed air holes are provided on the foaming outer cylinder 8 at the first opening; this number is only an example, and the specific number can be changed according to the actual situation. The foaming outer cylinder 8 has circumferentially distributed channels 21. The arrayed and symmetrically distributed air holes on the foaming outer cylinder 8 are all connected to their corresponding adjacent channels 21. An air inlet pipe 22 and an air supply pipe group 23 are fixedly connected and connected to the piston cylinder 20. The air supply pipe group 23 contains several pipes, the number of which is the same as the number of channels 21, and each pipe is connected to its corresponding channel 21. Both the air inlet pipe 22 and the air supply pipe group 23 have... One-way valves are installed. The one-way valve on the air inlet pipe 22 is only used for the flow of outside air to the piston cylinder 20. The one-way valve on the air supply pipe group 23 is only used for the flow of air in the piston cylinder 20 to the channel 21. The channel 21 is fixedly connected to and communicates with the air supply pipe group 23. An air volume adjustment module 24 is provided on the air supply pipe group 23. The air volume adjustment module 24 is an existing air volume control valve. The air volume adjustment module 24 is used to control the air volume entering all channels 21, so that the air volume of all the air holes on the foaming outer cylinder 8 gradually decreases from top to bottom, so as to achieve better detachment of foam located at different positions on the snow machine outer cylinder 5. A drive component is provided on the snow machine outer cylinder 5. The drive component is used to supply air to the air holes on the foaming outer cylinder 8.

[0035] like Figure 7 and Figures 10-13As shown, the drive assembly includes a piston rod 30, which is slidably connected to a piston cylinder 20. The piston cylinder 20 is provided with a spline groove, and the piston rod 30 is provided with a spline corresponding to the spline groove on the piston cylinder 20. A guide groove is provided inside the piston rod 30. The piston rod 30 rotates and is slidably connected to a rotating rod 31. The rotating rod 31 is fixedly connected to the output shaft of the drive module 10. A protrusion is provided on the rotating rod 31, which slides within the guide groove of the piston rod 30.

[0036] When using this device to simulate stage snow, first activate the electric push rod on the fixed frame 4 to adjust the tilt angle of the snow machine outer cylinder 5. The snow machine outer cylinder 5 will drive all its parts to rotate synchronously until it reaches the optimal snow-making angle for the performance. Then, stop the electric push rod. Next, activate the air supply assembly 2. Air is delivered to the inside of the snow machine outer cylinder 5 through the air outlet pipe of the air supply assembly 2 and the connecting pipe of the snow machine outer cylinder 5. The air inside the snow machine outer cylinder 5 passes through the snow machine outer cylinder 5 and the snow machine inner cylinder 6 and is then discharged. Finally, activate the oil supply assembly 3 to supply oil. Component 3 converts snowflake oil into foam through the oil outlet pipe and delivers it to the foaming inner cylinder 9. The foam flows out through the first opening of the foaming outer cylinder 8 and the second opening of the foaming inner cylinder 9. During this process, the air guide ring 7 guides the air blowing towards the snow machine inner cylinder 6 to the outside, so that the air inside the snow machine inner cylinder 6 does not directly impact the foam, reducing the shearing force of the air inside the snow machine inner cylinder 6 directly impacting the foam flowing out of the first opening of the foaming outer cylinder 8. Then, the drive module 10 is started. The output shaft of the drive module 10 drives the foaming inner cylinder 9 to rotate reciprocally through the gear set. Figure 6 Based on the front view, when the output shaft of the drive module 10 rotates clockwise, the output shaft of the drive module 10 drives the foaming inner cylinder 9 to rotate counterclockwise through the gear set. The first opening on the foaming outer cylinder 8 and the second opening on the foaming inner cylinder 9 are staggered, and the foaming outer cylinder 8 separates the outer foam of the foaming inner cylinder 9. At the same time, when the output shaft of the drive module 10 rotates clockwise, it drives the rotating rod 31 to rotate clockwise. The protrusion on the rotating rod 31 squeezes the guide groove of the piston rod 30, causing the piston rod 30 to rotate clockwise. As the piston rotates and moves forward, the piston rod 30 compresses the gas inside the piston cylinder 20, causing this gas to flow through the air supply pipe group 23, through the channel 21, and out through the symmetrically distributed air holes on the first opening of the foaming outer cylinder 8. This blows away the foam on the outside of the foaming inner cylinder 9 that has been sheared by the foaming outer cylinder 8. The blown-away foam is then blown by the air inside the snow machine inner cylinder 6 and sprayed out from the nozzle of the snow machine inner cylinder 6, entering the snow machine outer cylinder 5. The air inside the snow machine outer cylinder 5 causes the foam to gather towards the center and be sprayed out from the nozzle of the snow machine outer cylinder 5.

[0037] After the foam separates from the outer foaming cylinder 8, it tends to move downwards due to gravity, causing the lower foam to contact the inner wall of the snow machine inner cylinder 6, while the upper foam is difficult to separate from the outer foaming cylinder 8. Therefore, when the air supply component 2 is turned on, the air volume adjustment module 24 is activated simultaneously. The air volume adjustment module 24 can adjust the air volume to each channel 21, so that the air volume of all channels 21 gradually decreases from top to bottom. This reduces the blowing force exerted by the air outlet on the foam from top to bottom, reducing the probability of the lower foam of the outer foaming cylinder 8 contacting the inner cylinder 6 of the snow machine and the probability of the upper foam contacting the outer foaming cylinder 8. This allows the foam located at different positions on the outer foaming cylinder 8 to be better blown between the inner cylinder 6 and the outer foaming cylinder 8, preventing the foam from sticking to the surface of the inner cylinder 6 and the outer foaming cylinder 8. After the foam loses contact with the outer foaming cylinder 8, the output shaft of the drive module 10 rotates counterclockwise. The output shaft of the drive module 10 is connected to the gear set. The foaming inner cylinder 9 is rotated clockwise, aligning the first opening on the foaming outer cylinder 8 with the second opening on the foaming inner cylinder 9. The foam in the foaming inner cylinder 9 flows out through the openings on the foaming outer cylinder 8 and the foaming inner cylinder 9. At the same time, the output shaft of the drive module 10 drives the rotating rod 31 to rotate counterclockwise. The protrusion on the rotating rod 31 squeezes the guide groove of the piston rod 30, causing the piston rod 30 to rotate and move backward. A negative pressure is formed on the front side of the piston cylinder 20. This negative pressure draws outside air into the piston cylinder 20 through the air inlet pipe 22. The above process is repeated. The continuous generation of foam snowflakes is achieved through the reciprocating shearing between the first opening of the foaming outer cylinder 8 and the second opening of the foaming inner cylinder 9. The piston rod 30 squeezes the gas in the piston cylinder 20, causing the gas to be blown out from the air cylinder on the foaming outer cylinder 8. The simultaneous blowing away blows the foam to the outside. After the performance is completed, the oil supply component 3 is turned off, and the oil supply component 3 stops pumping snowflake oil. Then the drive module 10 and the air supply component 2 are turned off. Example 2

[0038] Based on Example 1, such as Figures 3-6 As shown, it also includes six push rods 40 that are symmetrically arranged in an array. The push rods 40 are existing electric push rods. The push rods 40 are fixed to the adjacent snow machine outer cylinder 5. The telescopic end of the push rod 40 is fixed to the adjacent foaming outer cylinder 8. The push rods 40 are used to adjust the position of the adjacent foaming outer cylinder 8.

[0039] like Figure 1 and Figure 2 As shown, it also includes three regulating valves 41 arranged in an array. The regulating valves 41 are existing air volume valves. The regulating valves 41 are set on the connecting pipes of adjacent snow machine outer cylinders 5. The regulating valves 41 are used to regulate the air volume of the snow machine outer cylinders 5.

[0040] During the performance, when it is necessary to reduce the size of the simulated snowflakes, push rod 40 is activated. Push rod 40 moves the adjacent foaming outer cylinder 8 backward, reducing the communication area between the first opening of the foaming outer cylinder 8 and the corresponding second opening on the foaming inner cylinder 9, thereby reducing the size of the foam. When it is necessary to increase the size of the simulated snowflakes, push rod 40 moves the adjacent foaming outer cylinder 8 forward, increasing the communication area between the first opening of the foaming outer cylinder 8 and the corresponding second opening on the foaming inner cylinder 9, thereby increasing the size of the snowflakes. After adjustment, push rod 40 is closed. When it is necessary to extend the snowflake's movement... When the snowflakes are in the correct position, the regulating valve 41 is opened, increasing the airflow into the connecting pipe of the adjacent snowflake machine outer cylinder 5. This increases the airflow speed in the outer cylinder 5 and inner cylinder 6 of the snowflake machine, allowing the air to blow the foam further. When it is necessary to shorten the snowflakes' falling position, the regulating valve 41 decreases the airflow into the connecting pipe of the adjacent snowflake machine outer cylinder 5, reducing the airflow speed in the outer cylinder 5 and inner cylinder 6. This shortens the distance the foam is blown by the air in the outer cylinder 5 and inner cylinder 6, thus adjusting the snowflakes' falling position.

[0041] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. A stage performance device simulating a snowy environment, comprising a stage support (1), wherein the stage support (1) is provided with an air supply component (2), the stage support (1) is provided with an oil supply component (3), the stage support (1) is fixedly connected to an array of fixed frames (4), each of the arrayed fixed frames (4) is rotatably connected to a snow machine outer cylinder (5), the snow machine outer cylinder (5) is connected to the air outlet pipe of the air supply component (2) through a connecting pipe, and the snow machine outer cylinder (5) is fixedly connected to a snow machine inner cylinder (6), characterized in that: It also includes an air guide ring (7), which is fixed to the inner cylinder (6) of the snow machine. The air guide ring (7) is provided with a foam outer cylinder (8). The foam outer cylinder (8) has an array of first openings distributed circumferentially. The foam outer cylinder (8) is provided with a foam inner cylinder (9). The foam inner cylinder (9) has a second opening corresponding to the first opening on the foam outer cylinder (8). The foam outer cylinder (8) is used to block the second opening on the foam inner cylinder (9). The foam inner cylinder (9) is connected to the oil outlet pipe of the oil supply component (3). The stage support (1) is fixed to a drive module (10). The output shaft of the drive module (10) drives the foam inner cylinder (9) to rotate through a gear set. The outer cylinder (5) of the snow machine is provided with an auxiliary detachment component. The auxiliary detachment component is used to assist the foam in detaching from the foam outer cylinder (8).

2. A stage performance device simulating a snowy environment according to claim 1, characterized in that, The auxiliary release assembly includes a piston cylinder (20), which is fixed to the outer cylinder (5) of the snow machine. The foaming outer cylinder (8) has symmetrically distributed air holes at the first opening. The foaming outer cylinder (8) has circumferentially distributed channels (21). The arrayed and symmetrically distributed air holes on the foaming outer cylinder (8) are all connected to the corresponding channels (21). The piston cylinder (20) is fixed to and connected to an air inlet pipe (22) and an air supply pipe group (23). Both the air inlet pipe (22) and the air supply pipe group (23) are equipped with one-way valves. The channels (21) are fixed to and connected to the air supply pipe group (23). The outer cylinder (5) of the snow machine is provided with a drive assembly, which is used to supply air to the air holes on the foaming outer cylinder (8).

3. A stage performance device simulating a snowy environment according to claim 2, characterized in that, The air guide ring (7) is configured as a horn shape. The opening area of ​​the air guide ring (7) on the side closer to the piston cylinder (20) is smaller than the opening area on the side farther away from the piston cylinder (20). The air guide ring (7) is used to make the airflow transition smoothly.

4. A stage performance device simulating a snowy environment according to claim 2, characterized in that, The drive assembly includes a piston rod (30) which is slidably connected to the piston cylinder (20). A guide groove is provided in the piston rod (30). The piston rod (30) rotates and is slidably connected to a rotating rod (31). The rotating rod (31) is fixedly connected to the output shaft of the drive module (10). A protrusion is provided on the rotating rod (31), which slides within the guide groove of the piston rod (30).

5. A stage performance device simulating a snowy environment according to claim 2, characterized in that, The air supply pipe assembly (23) is equipped with an air volume adjustment module (24), which is used to control the air volume entering all the channels (21) so that the air volume of all the air holes of the foaming outer cylinder (8) gradually decreases from top to bottom.

6. A stage performance device simulating a snowy environment according to claim 1, characterized in that, The first opening on the foamed outer cylinder (8) is an oval hole.

7. A stage performance device simulating a snowy environment according to claim 1, characterized in that, The first opening of the foaming outer cylinder (8) is provided with an inclined surface, which is used to guide the flow of foam.

8. A stage performance device simulating a snowy environment according to claim 2, characterized in that, The surface of the foamed outer cylinder (8) is coated with a Teflon coating.

9. A stage performance device simulating a snowy environment according to claim 1, characterized in that, It also includes symmetrically arranged push rods (40), which are fixed to the adjacent outer cylinder (5) of the snow machine. The telescopic end of the push rod (40) is fixed to the adjacent foaming outer cylinder (8). The foaming outer cylinder (8) is rotatably and slidably connected to the foaming inner cylinder (9). The foaming outer cylinder (8) is slidably connected to the air guide ring (7).

10. A stage performance device simulating a snowy environment according to claim 9, characterized in that, It also includes an array of regulating valves (41), which are disposed on the connecting pipe of the adjacent outer cylinder (5) of the snow machine, and the regulating valves (41) are used to regulate the air volume entering the outer cylinder (5) of the snow machine.

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