Drying device for tennis ball production
By introducing a return air duct and a preheating box into the drying device for tennis ball production, and using heat dissipation pipes and baffles to heat the air, the waste heat of the hot exhaust gas is reused, solving the problem of high energy consumption in existing devices and achieving a low-cost and high-efficiency drying effect.
Patent Information
- Application Number
- CN202520571736.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing tennis ball production drying equipment is unable to effectively recover and reuse the waste heat generated during the drying process, resulting in high energy consumption and the need to continuously heat fresh air, which increases energy consumption.
A drying device for tennis ball production was designed. Excess hot exhaust gas is introduced into the heat dissipation pipe in the preheating box through the return air duct. The heat is then dissipated into the preheating chamber through the heat dissipation pipe. The air in the preheating chamber is heated by heat dissipation fins and baffles. The hot air blower only needs to heat the air to the required drying temperature in a short time. Combined with the servo motor driving the carrying net cylinder to tumble the tennis balls, the waste heat is recycled.
It effectively reduces drying costs, improves energy efficiency, ensures uniformity and efficiency in drying, and avoids energy waste.
Smart Images
Figure CN223939812U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tennis ball processing technology, specifically a drying device for tennis ball production. Background Technology
[0002] Tennis is a competitive and entertaining ball sport in which players hit a ball over a net with a tennis racket in singles or doubles matches on a rectangular court separated by the net. It is also a yellow, round ball with a rubber core and a felt (or newer composite materials) with a diameter between 6.541 and 6.858 centimeters. Furthermore, it carries a unique tournament culture that originated and developed in medieval France and has the function of promoting social interaction among people.
[0003] Drying is a crucial step in tennis ball production. It ensures stable performance by removing excess moisture from internal materials such as rubber, stabilizing physical properties, maintaining elasticity and rebound height, and preserving dimensional accuracy. It also improves durability, reduces moisture to prevent mold growth, and enhances the bonding strength of multiple materials. Furthermore, it optimizes surface treatment effects, facilitates coating adhesion, and ensures printing quality. Additionally, it facilitates tennis ball storage and transportation, allowing for long-term storage at room temperature, reducing risks, resisting external forces, and ensuring stable quality.
[0004] When drying tennis balls, the net frame holding the balls is usually placed inside the drying structure, and then hot air is blown into the drying chamber to dry the balls. Some drying devices on the market usually recover the waste heat from the hot exhaust gas generated during drying to avoid energy waste. However, existing drying devices for tennis ball production cannot directly recycle the recovered waste heat from the exhaust gas back to the device itself. Although this achieves energy saving, the energy consumption of the drying equipment is still inconvenient. Every time the hot air blower draws in new air, the cold air needs to be reheated, which greatly increases energy consumption. Therefore, we propose a drying device for tennis ball production. Utility Model Content
[0005] The main objective of this invention is to provide a drying device for tennis ball production, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a drying device for tennis ball production, comprising a drying chamber and a hot air blower. The hot air blower is located at the bottom of one side of the drying chamber, and a hot air delivery pipe is connected to the outlet of the hot air blower. A carrying net cylinder is rotatably mounted on the upper part of the inner cavity of the drying chamber. A servo motor is detachably nested on the outer wall of the drying chamber on one side of the carrying net cylinder, and the power output end of the servo motor is detachably connected to the center position of the end of the carrying net cylinder. A hot air supply assembly is provided in the inner cavity of the drying chamber below the carrying net cylinder, and the air inlet of the hot air supply assembly is connected to the outlet of the hot air delivery pipe. A preheating chamber is located on one side of the hot air blower, and the outlet of the preheating chamber is connected to the air inlet of the hot air blower. A preheating cavity is provided inside the preheating chamber, and a heat dissipation pipe is detachably connected to the inner cavity of the preheating cavity. A return air pipe is detachably nested at the top of the preheating chamber, and both ends of the return air pipe are connected to the top of the drying chamber and the air inlet of the heat dissipation pipe, respectively.
[0007] Preferably, the hot air supply assembly includes a hot air exhaust pipe and an air distribution hood. The hot air exhaust pipe is horizontally arranged in the inner cavity of the drying box and directly below the supporting mesh cylinder. The air inlet end of the hot air exhaust pipe is interconnected with the air outlet end of the hot air conveying pipe. The air distribution hood is arranged in an interconnected manner on the side of the hot air exhaust pipe facing the supporting mesh cylinder.
[0008] Preferably, the surface of the heat dissipation pipe is covered with a heat-conducting sleeve, and a heat dissipation fin is fixedly connected to the outer wall of the heat-conducting sleeve.
[0009] Preferably, the inner cavity of the heat dissipation pipe is provided with a baffle plate, and there are multiple baffle plates arranged alternately on both sides of the inner cavity of the heat dissipation pipe.
[0010] Preferably, the surface of the drying chamber on the side of the supporting mesh cylinder opposite to the servo motor has a feeding port, and the surface of the feeding port is hinged to a cover.
[0011] Preferably, the preheating box has an exhaust vent at the lower end of its surface, and the air inlet of the exhaust vent is interconnected with the air outlet of the heat dissipation pipe. The preheating box has an air inlet on the side opposite to the hot air blower, and a dustproof net is detachably connected to the surface of the air inlet.
[0012] Preferably, a PLC is provided on one side of the drying oven, and the servo motor and the hot air blower are both electrically connected to an external power source through the PLC.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This invention utilizes a return air duct, a preheating chamber connected to a hot air blower, and a heat dissipation pipe in a coordinated manner. During drying, excess hot exhaust gas flows back into the heat dissipation pipe within the preheating chamber through the return air duct. The heat dissipation pipe then dissipates the heat into the preheating cavity within the preheating chamber. When the hot air blower operates, it draws external air into the preheating cavity through the air inlet. As the air flows within the preheating cavity, the heat dissipated by the heat dissipation pipe preheats the incoming air. Consequently, the air entering the hot air blower only needs to be heated to the required drying temperature in a short time, effectively reducing energy consumption and drying costs. Furthermore, during preheating, the heat-conducting sleeve and heat sink on the surface of the heat dissipation pipe interact with the internal cavity of the heat dissipation pipe. The staggered baffles work together to allow the heat dissipation pipes to quickly transfer heat outwards with the help of the heat-conducting sleeves, and then quickly dissipate it into the preheating chamber with the help of the heat sinks. This improves the heating effect on the air in the preheating chamber. Furthermore, when hot air flows through the heat dissipation pipes, the staggered baffles inside interrupt the direct flow of hot air, increasing the contact area between the hot air and the inside of the heat dissipation pipes, further improving the heat dissipation effect. This ensures the preheating of the introduced air during drying, and the waste gas generated during drying can be recycled back to the drying device itself. This avoids energy waste, reduces drying costs, and improves the practical effect of the device. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the drying oven of this utility model;
[0017] Figure 3 This is a cross-sectional view of the preheating box of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the heat dissipation pipe used in this application.
[0019] In the diagram: 1. Drying oven; 2. Feeding port; 3. Cover; 4. Supporting mesh cylinder; 5. Hot air blower; 6. Hot air conveying pipe; 7. Preheating box; 8. Exhaust port; 9. Air inlet; 10. Return air pipe; 11. Servo motor; 12. Hot air exhaust pipe; 13. Air distribution hood; 14. Preheating chamber; 15. Heat dissipation pipe; 16. Heat sink; 17. Baffle plate; 18. Heat conducting sleeve. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example
[0022] Please see Figure 1 - Figure 4 The diagram shows a drying device for tennis ball production, including a drying chamber 1 and a hot air blower 5. The hot air blower 5 is located at the bottom of one side of the drying chamber 1, and its outlet is connected to a hot air delivery pipe 6. A carrying net cylinder 4 is rotatably mounted on the upper part of the inner cavity of the drying chamber 1. A servo motor 11 is detachably nested on the outer wall of the drying chamber 1 on one side of the carrying net cylinder 4, and the power output end of the servo motor 11 is detachably connected to the center position of the end of the carrying net cylinder 4. A hot air supply assembly is provided in the inner cavity of the drying chamber 1 below the carrying net cylinder 4, and its inlet is connected to the outlet of the hot air delivery pipe 6. A preheating chamber 7 is located on one side of the hot air blower 5, and its outlet is connected to the inlet of the hot air blower 5. A preheating cavity 14 is provided inside the preheating chamber 7, and its inner cavity is detachably connected to… The preheating box 7 has a heat dissipation pipe 15. A return air pipe 10 is detachably nested at the top of the preheating box 7. The two ends of the return air pipe 10 are respectively connected to the top of the drying box 1 and the air inlet of the heat dissipation pipe 15. The hot air supply component in the drying box 1 is connected to the hot air fan 5 (composed of a box body, a centrifugal fan and a heating wire. The air inlet of the box body is connected to the air outlet of the preheating box 7. The air intake part of the centrifugal fan is located inside the box body and the air outlet is connected to the hot air supply pipe 6. The heating wire is located in the inner cavity of the air outlet of the centrifugal fan) through the hot air supply component in the drying box 1. With the help of the carrying net cylinder 4 that can be driven to rotate by the servo motor 11, the tennis balls can be heated evenly during the drying process. The hot waste gas in the drying box 1 is introduced into the heat dissipation pipe 15 of the preheating box 7 through the return air pipe 10, realizing the recovery and reuse of waste heat, effectively reducing energy consumption, improving drying efficiency and reducing drying costs.
[0023] The hot air supply assembly includes a hot air exhaust pipe 12 and an air distribution hood 13. The hot air exhaust pipe 12 is horizontally arranged in the inner cavity of the drying chamber 1 and directly below the supporting mesh cylinder 4. The air inlet end of the hot air exhaust pipe 12 is interconnected with the air outlet end of the hot air conveying pipe 6. The air distribution hood 13 is arranged in an interconnected manner on the side of the hot air exhaust pipe 12 facing the supporting mesh cylinder 4, which enables the hot air generated by the hot air blower 5 to blow evenly and stably onto the items to be dried on the supporting mesh cylinder 4, effectively improving the uniformity and efficiency of drying and ensuring the consistency of drying effect.
[0024] The heat dissipation pipe 15 is covered with a heat-conducting sleeve 18, and a heat sink 16 is fixedly connected to the outer wall of the heat-conducting sleeve 18. The inner cavity of the heat dissipation pipe 15 is provided with a baffle plate 17, and there are multiple baffle plates 17 arranged alternately on both sides of the inner cavity of the heat dissipation pipe 15. The heat-conducting sleeve 18 (the heat-conducting sleeve 18 is made of a heat-conducting sheet, also called a heat-conducting silicone sheet, which is a material that fills the gap between the heat-generating device and the heat sink 16 or metal base, and can improve the heat transfer efficiency between them. It is commonly used in scenarios such as heat dissipation of electronic devices) can quickly transfer heat out. The heat sink 16 increases the heat dissipation area and accelerates heat dissipation, while the baffle plate 17 interrupts the direct flow of hot air, increases the contact area between the hot air and the inside of the heat dissipation pipe 15, and can make full use of the waste heat of the drying exhaust gas to efficiently preheat the air entering the preheating box 7, effectively reducing energy consumption and drying costs.
[0025] The drying chamber 1 on the side of the supporting mesh cylinder 4 opposite to the servo motor 11 has a feeding port 2, and a cover 3 is hinged to the surface of the feeding port 2. The lower end of the surface of the preheating chamber 7 has an exhaust port 8, and the air inlet of the exhaust port 8 is interconnected with the air outlet of the heat dissipation pipe 15. The preheating chamber 7 on the side opposite to the hot air blower 5 has an air inlet 9, and a dustproof net is detachably connected to the surface of the air inlet 9 for easy and convenient feeding and removal of tennis balls. The exhaust port 8 at the lower end of the surface of the preheating chamber 7 is interconnected with the air outlet of the heat dissipation pipe 15, which can promptly discharge the exhaust gas after heat dissipation. The dustproof net detachably connected to the air inlet 9 of the preheating chamber 7 can effectively filter the incoming air, prevent dust and other impurities from entering the device, ensure the purity of the hot air, and thus improve the drying quality of the tennis balls.
[0026] It should be noted that this utility model is a drying device for tennis ball production. The tennis balls to be dried are placed into the carrying net cylinder 4 through the feeding port 2, and then the cover 3 is closed. During drying, the dryer delivers heated air to the drying chamber 1 to heat the tennis balls in the carrying net cylinder 4. Simultaneously, outside air enters the preheating chamber 14 of the preheating chamber 7 after being filtered by the dustproof net at the air inlet 9. At this time, the hot exhaust gas generated during drying flows back to the heat dissipation pipe 15 of the preheating chamber through the return air pipe 10. The heat-conducting sleeve 18 on the surface of the heat dissipation pipe 15 quickly transfers heat outwards, and the outer heat dissipation fins 16 accelerate the dissipation of heat into the preheating chamber 14. The interlaced baffles 17 interrupt the direct flow of hot air, increase the contact area, and improve the heat dissipation effect, so that the air entering the preheating chamber 14 is fully preheated. The hot air blower 5 can heat it to the required drying temperature in a short time. The heated hot air enters the hot air supply component of the drying chamber 1 through the hot air conveying pipe 6. It first goes to the hot air discharge pipe 12 below the carrying net cylinder 4, and then blows it evenly onto the tennis balls through the air distribution hood 13. At the same time, the servo motor 11 drives the carrying net cylinder 4 to rotate, so that the tennis balls roll continuously, ensuring that all sides are in full contact with the hot air, improving the drying uniformity and efficiency, effectively realizing the recycling of waste heat, and reducing energy consumption and cost.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A drying device for tennis ball production, comprising a drying chamber (1) and a hot air blower (5), characterized in that: A hot air blower (5) is provided at the bottom of one side of the drying box (1). The outlet of the hot air blower (5) is connected to a hot air conveying pipe (6). A carrying mesh cylinder (4) is rotatably provided at the upper end of the inner cavity of the drying box (1). A servo motor (11) is detachably nested on the outer wall of the drying box (1) on one side of the carrying mesh cylinder (4). The power output end of the servo motor (11) is detachably connected to the center position of the end of the carrying mesh cylinder (4). A hot air supply assembly is provided in the inner cavity of the drying box (1) below the carrying mesh cylinder (4). The air inlet of the component is interconnected with the air outlet of the hot air conveying pipe (6). A preheating box (7) is provided on one side of the hot air blower (5). The air outlet of the preheating box (7) is interconnected with the air inlet of the hot air blower (5). A preheating chamber (14) is provided inside the preheating box (7). A heat dissipation pipe (15) is detachably connected to the inner cavity of the preheating chamber (14). A return air pipe (10) is detachably nested at the top of the preheating box (7). The two ends of the return air pipe (10) are interconnected with the top of the drying box (1) and the air inlet of the heat dissipation pipe (15), respectively.
2. The drying device for tennis ball production according to claim 1, characterized in that: The hot air supply assembly includes a hot air exhaust pipe (12) and an air distribution hood (13). The hot air exhaust pipe (12) is horizontally arranged in the inner cavity of the drying box (1) and directly below the supporting mesh cylinder (4). The air inlet end of the hot air exhaust pipe (12) is interconnected with the air outlet end of the hot air conveying pipe (6). The air distribution hood (13) is arranged in an interconnected manner on the side of the hot air exhaust pipe (12) facing the supporting mesh cylinder (4).
3. The drying device for tennis ball production according to claim 1, characterized in that: The surface of the heat dissipation pipe (15) is covered with a heat-conducting sleeve (18), and a heat dissipation fin (16) is fixedly connected to the outer wall of the heat-conducting sleeve (18).
4. A drying device for tennis ball production according to claim 1, characterized in that: The heat dissipation pipe (15) has a baffle plate (17) inside, and there are multiple baffle plates (17) arranged alternately on both sides of the heat dissipation pipe (15).
5. A drying device for tennis ball production according to claim 1, characterized in that: The drying chamber (1) on the side of the carrying mesh cylinder (4) opposite to the servo motor (11) has a feeding port (2), and a cover (3) is hinged to the surface of the feeding port (2).
6. A drying device for tennis ball production according to claim 1, characterized in that: The preheating box (7) has an exhaust port (8) at the lower end of its surface, and the air inlet of the exhaust port (8) is connected to the air outlet of the heat dissipation pipe (15). The preheating box (7) has an air inlet (9) on one side relative to the hot air blower (5), and a dustproof net is detachably connected to the surface of the air inlet (9).
7. A drying device for tennis ball production according to claim 1, characterized in that: The drying oven (1) is equipped with a PLC on one side, and the servo motor (11) and the hot air blower (5) are electrically connected to the external power supply through the PLC.