A condenser rubber ball rubber ball cleaning system
By designing an adsorption layer and a vibrator inside the condenser ball storage tank, and using a motor to drive the scraper and roller to rotate, combined with the vibration of the vibrator, automatic cleaning of the balls is achieved. This solves the problems of easy damage and retention of balls during removal in traditional methods, and improves cleaning efficiency and automation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN ZHUOFEI IND CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional methods of cleaning rubber balls require manual removal, which increases workload and is prone to damaging the rubber balls. In addition, the rubber ball device has a long retention time during the removal and placement process, which affects the cleaning efficiency of the condenser.
Design a condenser ball cleaning system, including a ball storage tank, an adsorption layer, a vibrator and a transmission assembly. The system uses a motor to drive the scraper and roller to rotate, combined with the vibration of the vibrator, to agitate and shake the balls in the storage tank, and uses a cleaning fluid for automatic cleaning.
It achieves efficient and automatic cleaning of the rubber balls, avoids damage to the rubber balls, saves time in taking them out and putting them in, improves cleaning efficiency, and reduces labor costs.
Smart Images

Figure CN122149250A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of condenser cleaning technology, and in particular to a condenser ball cleaning system. Background Technology
[0002] The rubber ball cleaning device is a device that automatically cleans the dirt on the inner wall of the condenser cooling tubes while the condenser is working. It uses a high-pressure air pump to push the rubber balls inside the device into the condenser pipes, and cleans the condenser pipes with the rubber balls. However, after the cleaning ball has finished cleaning the condenser pipes, dirt inside the condenser pipes will adhere to the cleaning ball, so cleaning the cleaning ball regularly is an essential step; Traditional cleaning methods for condenser balls involve removing the balls from the ball-collecting device before cleaning them. This method not only increases workload but also causes damage due to frequent ball removal. Furthermore, once the balls are removed from the device, it becomes stuck and cannot be quickly cleaned. The prolonged time spent removing and replacing the balls further exacerbates these problems. Therefore, this application proposes an improved condenser ball cleaning system to address these issues. Summary of the Invention
[0003] The purpose of this invention is to provide a condenser ball cleaning system that can quickly clean the balls inside the ball device and has a superior cleaning effect.
[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a condenser ball cleaning system, comprising a ball storage cylinder, a base fixedly installed on the inner bottom wall of the ball storage cylinder, a support rod fixedly connected inside the base, a ball storage net fixedly connected to one end of the support rod, a slot provided on the inner side of the ball storage net, an adsorption layer engaged inside the slot, a cover plate overlapping the top of the ball storage cylinder, a motor fixedly installed at the center of the cover plate, a transmission assembly fixedly installed at the output end of the motor, a drive shaft fixedly installed inside the transmission assembly, a scraper fixedly connected to the outer side of the drive shaft, a groove provided on the outer side of the scraper, a roller rotatably connected inside the groove, a rubber layer fixedly connected to the outer side of the roller, a vibrator provided inside the ball storage cylinder, an excitation rod hinged to the output end of the vibrator, transmission shafts fixedly installed on both sides of the outer side of the ball storage net, the excitation rods hinged to both sides of the outer side of the ball storage net via the transmission shafts, and a feed pipe fixedly connected to the edge of the top of the cover plate.
[0005] By adopting the above technical solution, the adsorption layer is installed inside the glue ball storage net through the slot, and the glue ball storage net is installed inside the base through the support rod, so that the glue ball storage net can be fixed inside the glue ball storage cylinder. The cover plate is closed at the opening of the glue ball storage cylinder. The motor drives the drive shaft and scraper to rotate through the transmission component. During this process, the roller can perform circumferential motion inside the adsorption layer. The vibrator drives the glue ball storage net and the adsorption layer to vibrate through the excitation rod, so that the glue balls inside the glue ball storage net can be stirred and shaken. The glue balls move fully inside the glue ball storage net. The roller squeezes the adsorption layer, and the cleaning liquid inside the adsorption layer is squeezed out and comes into contact with the glue balls inside the adsorption layer. Through the full movement of the glue balls, the glue balls can be cleaned.
[0006] A further configuration of the present invention is as follows: the transmission assembly includes a first gear and a second gear, the first gear and the second gear meshing with each other, a coupling is fixedly installed at the center of the bottom of the second gear, and the second gear and the drive shaft are movably installed through the coupling.
[0007] By adopting the above technical solution, the first gear is fixed at the output end of the motor, and the second gear is fixedly connected to the drive shaft through a coupling. Through the meshing action between the first gear and the second gear, the rigid force of the motor during the driving process is reduced.
[0008] A further feature of the present invention is that: both sides of the top of the cover plate are threaded with first screws, the first screws extend into the interior of the glue ball storage cylinder, and a circular cavity adapted to the support rod is fixedly connected at the center of the base, the support rod being fixedly connected inside the circular cavity.
[0009] By adopting the above technical solution, the cover plate overlaps the top of the rubber ball storage cylinder, and the cover plate is fixed to the top of the rubber ball storage cylinder by the first screw, thereby fixing the motor.
[0010] A further feature of the present invention is that a vibration bracket is fixedly installed on the outside of the vibrator, and a second screw is threadedly connected to the inside of the vibration bracket, the second screw extending into the inside of the rubber ball storage cylinder.
[0011] By adopting the above technical solution, the vibration bracket is fixedly connected to the vibrator, and the second screw is threaded to the inner wall of the vibration bracket and the rubber ball storage cylinder, thereby fixing the vibrator inside the rubber ball storage cylinder and improving the stability of the vibrator during operation.
[0012] A further configuration of the present invention is as follows: a first glue ball pipe is fixedly connected inside the glue ball storage net, a first flange is provided outside the glue ball storage cylinder, a second glue ball pipe is movably connected to the first glue ball pipe through the first flange, and a high-pressure air pump is fixedly installed in the middle of the second glue ball pipe.
[0013] By adopting the above technical solution, the first ball pipe and the second ball pipe are connected by the first flange, and there are two sets of the first ball pipe and the second ball pipe. The two sets of the first ball pipe and the second ball pipe are controlled by two high-pressure air pumps, so that the two sets of the first ball pipe and the second ball pipe respectively put the ball in and put the ball out.
[0014] A further feature of the present invention is that a circular groove is formed on the inner side of the cover plate, and a sealing strip is fixedly connected inside the circular groove.
[0015] By adopting the above technical solution, the sealing strip fills and seals the gap between the cover plate and the rubber ball storage net, preventing the rubber balls from falling into the gap between the cover plate and the rubber ball storage net.
[0016] A further feature of the present invention is that a lifting lug is fixedly installed on the outside of the glue ball storage cylinder, a hook is hung inside the lifting lug, and a chain is fixedly connected to the end of the hook.
[0017] By adopting the above technical solution, the chain is connected to the lifting machinery, and the rubber ball storage cylinder is lifted by the hook and lifting lug, so that the rubber ball storage cylinder can be installed on the outside of the condenser.
[0018] A further feature of the present invention is that a second flange is fixedly installed on the other side of the outer side of the glue ball storage cylinder, and a sealing cover is movably connected to the glue ball storage cylinder through the second flange.
[0019] By adopting the above technical solution, the sealing cover can be removed through the second flange, which facilitates the inspection and maintenance of the inside of the rubber ball storage cylinder by the staff.
[0020] The beneficial effects of this invention are: This device can clean rubber balls inside the rubber ball storage cylinder and mesh without removing them, thus preventing damage caused by removal and saving time on ball removal and loading. It also increases cleaning efficiency. During cleaning, the rubber balls are agitated and shaken to ensure thorough contact with the cleaning solution, enhancing the cleaning effect and resulting in high-quality cleaning. The entire cleaning process is automated, reducing labor costs. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the exploded structure of the present invention; Figure 2 This is an exploded structural diagram of the transmission component of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the gel ball storage net and adsorption layer of the present invention; Figure 4 This is an exploded structural diagram of the first and second glue ball pipes of the present invention. Figure 5 This is a schematic diagram of the sealing strip of the present invention; Figure 6 This is a schematic diagram of the lifting lug of the present invention.
[0023] In the diagram, 1. Glue ball storage cylinder; 2. Base; 3. Support rod; 4. Glue ball storage net; 5. Adsorption layer; 6. Cover plate; 7. Transmission assembly; 8. Drive shaft; 9. Scraper; 10. Groove; 11. Roller; 12. Rubber layer; 13. Vibrator; 14. Excitation rod; 15. Transmission shaft; 16. Feed pipe; 17. First screw pin; 18. Vibration bracket; 19. Second screw pin; 20. First glue ball pipe; 21. First flange; 22. Second glue ball pipe; 23. High-pressure air pump; 24. Sealing strip; 25. Lifting lug; 26. Hook; 27. Chain; 28. Second flange; 29. Sealing cover; 30. Cavity; 31. Motor; 71. First gear; 72. Second gear; 73. Coupling. Detailed Implementation
[0024] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0025] A condenser ball cleaning system includes the following specific embodiments: Example 1: Please refer to Figure 1-4A base 2 is fixedly installed on the inner bottom wall of the ball storage cylinder 1. A support rod 3 is fixedly connected inside the base 2. A ball storage net 4 is fixedly connected to one end of the support rod 3. A slot is opened on the inner side of the ball storage net 4. An adsorption layer 5 is engaged inside the slot. A cover plate 6 is attached to the top of the ball storage cylinder 1. A motor 31 is fixedly installed at the center of the cover plate 6. A transmission assembly 7 is fixedly installed at the output end of the motor 31. A drive shaft 8 is fixedly installed inside the transmission assembly 7. A scraper 9 is fixedly connected to the outer side of the drive shaft 8. A groove 10 is opened on the outer side of the scraper 9. A roller 11 is rotatably connected inside the groove 10. A rubber layer 12 is fixedly connected to the outside of the roller 11. A vibrator 13 is installed inside the ball storage cylinder 1. An excitation rod 14 is hinged to the output end of the vibrator 13. A transmission shaft 15 is fixedly installed on both sides of the outer side of the ball storage net 4. The excitation rod 14 is hinged to both sides of the outer side of the ball storage net 4 through the transmission shaft 15. A feed pipe 16 is fixedly connected to the top edge of the cover plate 6. Furthermore, the transmission assembly 7 includes a first gear 71 and a second gear 72, which mesh with each other. A coupling 73 is fixedly installed at the center of the bottom of the second gear 72, and the second gear 72 and the drive shaft 8 are movably installed through the coupling 73. Specifically, the adsorption layer 5 is installed inside the glue ball storage net 4 via a slot. The glue ball storage net 4 is installed inside the base 2 via a support rod 3, so that the glue ball storage net 4 can be fixed inside the glue ball storage cylinder 1. The cover plate 6 is closed at the opening of the glue ball storage cylinder 1. The motor 31 drives the drive shaft 8 and scraper 9 to rotate via the transmission assembly 7. During this process, the roller 11 can perform circumferential motion inside the adsorption layer 5. The vibrator 13 drives the glue ball storage net 4 and the adsorption layer 5 to vibrate via the excitation rod 14, thereby causing the glue balls inside the glue ball storage net 4 to be agitated and shaken. The glue balls move fully inside the glue ball storage net 4. The roller 11 squeezes the adsorption layer 5, and the cleaning liquid inside the adsorption layer 5 is squeezed out and comes into contact with the glue balls inside the adsorption layer 5. Through the full movement of the glue balls, the cleaning liquid inside the adsorption layer 5 is squeezed out and comes into contact with the glue balls inside the adsorption layer 5. The rubber balls can be cleaned by cleaning them inside the rubber ball storage cylinder 1 and the rubber ball storage net 4 without removing them. This prevents the rubber balls from being damaged during cleaning and saves time on removing and placing them, increasing cleaning efficiency. During the cleaning process, the rubber balls are agitated and shaken to ensure they fully contact the cleaning liquid, thus enhancing the cleaning effect and achieving high-quality cleaning. The entire cleaning process is automated, reducing labor costs. The first gear 71 is fixed to the output end of the motor 31, and the second gear 72 is fixedly connected to the drive shaft 8 through the coupling 73. The meshing between the first gear 71 and the second gear 72 reduces the rigid force on the motor 31 during the driving process. Example 2: Please refer to Figure 1 , Figure 2 and Figure 5 Both sides of the top of the cover plate 6 are threaded with first screw pins 17, which extend into the interior of the rubber ball storage cylinder 1. A circular cavity 30 adapted to the support rod 3 is fixedly connected at the center of the base 2. The support rod 3 is fixedly connected inside the circular cavity 30. A vibration bracket 18 is fixedly installed on the outside of the vibrator 13. A second screw pin 19 is threadedly connected inside the vibration bracket 18. The second screw pin 19 extends into the interior of the rubber ball storage cylinder 1. A circular groove is opened on the inner side of the cover plate 6. A sealing strip 24 is fixedly connected inside the circular groove. Specifically, the cover plate 6 overlaps the top of the rubber ball storage cylinder 1, and is fixed to the top of the rubber ball storage cylinder 1 by the first screw 17, thereby fixing the motor 31. The vibration bracket 18 is fixedly connected to the vibrator 13, and is threaded to the vibration bracket 18 and the inner wall of the rubber ball storage cylinder 1 by the second screw 19, thereby fixing the vibrator 13 to the inner side of the rubber ball storage cylinder 1, improving the stability of the vibrator 13 during operation. The sealing strip 24 fills and seals the gap between the cover plate 6 and the rubber ball storage net 4, preventing the rubber balls from falling into the gap between the cover plate 6 and the rubber ball storage net 4. Example 3: Please refer to Figure 1 and Figure 4 The glue ball storage net 4 is internally fixedly connected to a first glue ball pipe 20. The glue ball storage cylinder 1 is externally provided with a first flange 21. The first glue ball pipe 20 is movably connected to a second glue ball pipe 22 through the first flange 21. A high-pressure air pump 23 is fixedly installed in the middle of the second glue ball pipe 22. Specifically, the first ball-filling pipe 20 and the second ball-filling pipe 22 are connected by the first flange 21, and there are two sets of the first ball-filling pipe 20 and the second ball-filling pipe 22. The two sets of the first ball-filling pipe 20 and the second ball-filling pipe 22 are controlled by two high-pressure air pumps 23, so that the two sets of the first ball-filling pipe 20 and the second ball-filling pipe 22 respectively fill the ball and release the ball. Example 4: Please refer to Figure 1 and Figure 6 The outer side of the glue ball storage cylinder 1 is fixedly installed with a lifting lug 25, and a hook 26 is brushed inside the lifting lug 25. A chain 27 is fixedly connected to the end of the hook 26. A second flange 28 is fixedly installed on the other side of the outer side of the glue ball storage cylinder 1. A sealing cover 29 is movably connected to the glue ball storage cylinder 1 through the second flange 28. Specifically, the chain 27 is connected to the lifting machinery, and the rubber ball storage cylinder 1 is lifted by the hook 26 and the lifting lug 25, so that the rubber ball storage cylinder 1 can be installed on the outside of the condenser. The sealing cover 29 is removed through the second flange 28. Removing the sealing cover 29 makes it easier for the staff to inspect and repair the inside of the rubber ball storage cylinder 1. A condenser ball cleaning system includes the following steps: S1), the glue ball storage net 4 is installed inside the glue ball storage cylinder 1 through the base 2 and the support rod 3. The glue ball storage net 4 collects and stores the glue balls. The motor 31 and the transmission assembly 7 are installed above the glue ball storage cylinder 1 through the cover plate 6. S2), as shown in S1, during the storage process of the glue balls, the adsorption layer 5 is installed on the inside of the glue ball storage net 4 so that the glue balls are stored inside the adsorption layer 5. The staff puts the cleaning liquid into the adsorption layer 5 inside the glue ball storage net 4 through the feed pipe 16, and the cleaning liquid is adsorbed into the inside of the adsorption layer 5. S3), as shown in S2, the motor 31 drives the transmission assembly 7, the drive shaft 8 and the scraper 9 to rotate. The roller 11 is installed in the groove 10 inside the scraper 9. The roller 11 moves in a circular motion along the inner wall of the adsorption layer 5, which can agitate the glue balls inside the adsorption layer 5, so that the glue balls move inside the adsorption layer 5. S4), as shown in S3, during the movement of the rubber balls, the vibrator 13 drives the excitation rod 14 to excite the rubber ball storage net 4, causing the rubber balls inside the adsorption layer 5 to shake during the agitation. During this process, the roller 11 squeezes the adsorption layer 5, causing the cleaning liquid inside the adsorption layer 5 to be squeezed out and come into contact with the rubber balls. Through the high-frequency agitation and shaking of the rubber balls, the rubber balls and the cleaning liquid come into full contact, thereby achieving the purpose of cleaning the rubber balls. S5), the first ball pipe 20, the first flange 21 and the second ball pipe 22 are all in two sets. The first ball pipe 20, the first flange 21 and the second ball pipe 22 are controlled by the high-pressure air pump 23, so that the ball can be put into and out of the ball through the two sets of the first ball pipe 20, the first flange 21 and the second ball pipe 22.
[0026] In this invention, the adsorption layer 5 is installed inside the glue ball storage net 4 via a slot, and the glue ball storage net 4 is installed inside the base 2 via a support rod 3, so that the glue ball storage net 4 can be fixed inside the glue ball storage cylinder 1. The cover plate 6 is closed at the opening of the glue ball storage cylinder 1. The motor 31 drives the drive shaft 8 and scraper 9 to rotate via the transmission assembly 7. During this process, the roller 11 can perform circumferential motion inside the adsorption layer 5. The vibrator 13 drives the glue ball storage net 4 and the adsorption layer 5 to vibrate via the excitation rod 14, thereby agitating and shaking the glue balls inside the glue ball storage net 4. The glue balls move fully inside the glue ball storage net 4, and the roller 11 squeezes the adsorption layer 5, adsorbing the glue balls. The cleaning liquid inside the adsorption layer 5 is squeezed out and comes into contact with the rubber balls inside the adsorption layer 5. Through the full movement of the rubber balls, the rubber balls can be cleaned. The rubber balls can be cleaned inside the rubber ball storage cylinder 1 and the rubber ball storage net 4 without removing them. This prevents the rubber balls from being damaged during the cleaning process and saves time on removing and placing them, increasing the cleaning efficiency. During the cleaning process, the rubber balls are agitated and shaken, allowing them to fully contact the cleaning liquid, thereby increasing the cleaning effect and ensuring high-quality cleaning. The entire cleaning process is automated, reducing labor costs.
[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A condenser ball cleaning system, comprising a ball storage cylinder (1), characterized in that: A base (2) is fixedly installed on the inner bottom wall of the glue ball storage cylinder (1). A support rod (3) is fixedly connected inside the base (2). A glue ball storage net (4) is fixedly connected to one end of the support rod (3). A slot is opened on the inner side of the glue ball storage net (4). An adsorption layer (5) is engaged inside the slot. A cover plate (6) is attached to the top of the glue ball storage cylinder (1). A motor (31) is fixedly installed at the center of the cover plate (6). A transmission assembly (7) is fixedly installed at the output end of the motor (31). A drive shaft (8) is fixedly installed inside the transmission assembly (7). The outer side of the drive shaft (8) is fixedly... A scraper (9) is fixedly connected to the outside of the scraper (9), and a groove (10) is provided on the outside of the groove (10). A roller (11) is rotatably connected inside the groove (10). A rubber layer (12) is fixedly connected to the outside of the roller (11). A vibrator (13) is provided inside the ball storage cylinder (1). An excitation rod (14) is hinged to the output end of the vibrator (13). A drive shaft (15) is fixedly installed on both sides of the outside of the ball storage net (4). The excitation rod (14) is hinged to both sides of the outside of the ball storage net (4) through the drive shaft (15). A feed pipe (16) is fixedly connected to the top edge of the cover plate (6).
2. The condenser ball cleaning system according to claim 1, characterized in that: The transmission assembly (7) includes a first gear (71) and a second gear (72), which mesh with each other.
3. The condenser ball cleaning system according to claim 2, characterized in that: A coupling (73) is fixedly installed at the center of the bottom of the second gear (72), and the second gear (72) and the drive shaft (8) are movably installed through the coupling (73).
4. The condenser ball cleaning system according to claim 1, characterized in that: Both sides of the top of the cover plate (6) are threaded with first screw pins (17), which extend into the interior of the ball storage cylinder (1). A circular cavity (30) adapted to the support rod (3) is fixedly connected at the center of the base (2), and the support rod (3) is fixedly connected inside the circular cavity (30).
5. The condenser ball cleaning system according to claim 1, characterized in that: A vibration bracket (18) is fixedly installed on the outside of the vibrator (13), and a second screw (19) is threadedly connected inside the vibration bracket (18), the second screw (19) extending into the inside of the rubber ball storage cylinder (1).
6. The condenser ball cleaning system according to claim 1, characterized in that: The inside of the glue ball storage net (4) is fixedly connected to a first glue ball pipe (20), and the outside of the glue ball storage cylinder (1) is provided with a first flange (21). The first glue ball pipe (20) is movably connected to a second glue ball pipe (22) through the first flange (21), and a high-pressure air pump (23) is fixedly installed in the middle of the second glue ball pipe (22).
7. The condenser ball cleaning system according to claim 1, characterized in that: A circular groove is provided on the inner side of the cover plate (6), and a sealing strip (24) is fixedly connected inside the circular groove.
8. The condenser ball cleaning system according to claim 1, characterized in that: The outer side of the rubber ball storage cylinder (1) is fixedly installed with a lifting lug (25), and a hook (26) is brushed inside the lifting lug (25). A chain (27) is fixedly connected to the end of the hook (26).
9. A condenser ball cleaning system according to claim 1, characterized in that: A second flange (28) is fixedly installed on the other side of the outside of the glue ball storage cylinder (1), and a sealing cover (29) is movably connected to the glue ball storage cylinder (1) through the second flange (28).
10. A condenser ball cleaning system according to claims 1-9, characterized in that: The following usage steps are included: S1), the glue ball storage net (4) is installed inside the glue ball storage cylinder (1) through the base (2) and the support rod (3). The glue ball storage net (4) collects and stores the glue balls. The motor (31) and the transmission assembly (7) are installed above the glue ball storage cylinder (1) through the cover plate (6). S2), as shown in S1), during the storage process, the adsorption layer (5) is installed on the inside of the glue ball storage net (4) so that the glue ball is stored inside the adsorption layer (5). The staff puts the cleaning liquid into the adsorption layer (5) inside the glue ball storage net (4) through the feed pipe (16), and the cleaning liquid is adsorbed into the inside of the adsorption layer (5). S3), as shown in S2), the motor (31) drives the transmission assembly (7), drive shaft (8) and scraper (9) to rotate, and the roller (11) is installed in the groove (10) inside the scraper (9). The roller (11) moves in a circular motion along the inner wall of the adsorption layer (5), thereby agitating the glue balls inside the adsorption layer (5) so that the glue balls move inside the adsorption layer (5); (S4), as shown in S3), during the movement of the rubber ball, the vibrator (13) drives the excitation rod (14) to excite the rubber ball storage net (4), so that the rubber ball inside the adsorption layer (5) is shaken during the agitation. During this process, the adsorption layer (5) is squeezed by the roller (11), so that the cleaning liquid inside the adsorption layer (5) is squeezed out and comes into contact with the rubber ball. Through the high-frequency agitation and shaking of the rubber ball, the rubber ball and the cleaning liquid come into full contact, thereby achieving the purpose of cleaning the rubber ball. S5), the first ball pipe (20), the first flange (21) and the second ball pipe (22) are all in two sets. The first ball pipe (20), the first flange (21) and the second ball pipe (22) are controlled by a high-pressure air pump (23) respectively, so that the ball can enter and exit through the two sets of the first ball pipe (20), the first flange (21) and the second ball pipe (22).