Cooling device for polypropylene regenerated particle production
By designing a combined structure of limiting groove, slider, guide frame and exhaust equipment, uniform cooling of polypropylene particles was achieved, solving the problem of low cooling efficiency of existing equipment and improving the cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGLING WANLONG TECHNOLOGY CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cooling devices for polypropylene production have low contact efficiency between the cold gas and the polypropylene granules, resulting in ineffective cooling of the granules covering the granules underneath.
A cooling device was designed, which adopts a combination structure of limiting groove, slider, guide frame and exhaust equipment. The exhaust equipment is driven to move back and forth by reciprocating screw. Combined with the shaking of the moving frame and uniform air blowing, the polypropylene particles are cooled evenly.
This improves cooling efficiency and effectiveness, enabling polypropylene particles to be cooled uniformly and solving the cooling limitations of existing devices.
Smart Images

Figure CN224255800U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooling technology, and more specifically, to a cooling device for the production of recycled polypropylene pellets. Background Technology
[0002] Polypropylene is an important plastic material, belonging to the thermoplastic category. Cooling devices are required in the production process of polypropylene.
[0003] While existing cooling devices for polypropylene production do provide cooling, the way the cold gas comes into contact with the polypropylene particles is inefficient. Because polypropylene is produced by piling up the material, the polypropylene particles covered underneath cannot be effectively cooled during the cooling process.
[0004] To address the aforementioned problems, this application provides a cooling device for the production of recycled polypropylene pellets. Utility Model Content
[0005] The cooling device for producing recycled polypropylene pellets provided in this application adopts the following technical solution:
[0006] A cooling device for producing recycled polypropylene pellets includes a housing, a cooling mechanism inside the housing, and the cooling mechanism extending to the outside of the housing.
[0007] The cooling mechanism includes a limiting groove formed on the inner wall of the top of the housing. A slider is embedded inside the limiting groove. A motor is fixedly connected to the rear side of the housing. A reciprocating screw is fixedly connected to the output shaft of the motor. The front end of the reciprocating screw passes through the slider and extends to the interior of the front side of the housing. The reciprocating screw and the slider are connected by a ball nut pair. A guide groove is embedded inside one side of the housing. A guide frame is embedded inside the guide groove. Two exhaust device bodies are fixedly connected to one side of the guide frame. The top of the exhaust device body is fixedly installed to the bottom of the slider. Auxiliary components are provided on the outer side of the two exhaust device bodies.
[0008] Furthermore, the auxiliary component includes a support wheel, which is fixedly connected to the bottom of the bottom exhaust device body, and the bottom of the support wheel is in contact with the inner wall of the bottom of the housing.
[0009] The above technical solution, by setting support wheels, can not only support the body of the bottom exhaust device, but also reduce the friction between the body of the bottom exhaust device and the shell.
[0010] Furthermore, the limiting groove matches the slider, the guide groove matches the guide frame, and the reciprocating screw is movably connected to the housing via a bearing.
[0011] The above technical solution makes the reciprocating lead screw more stable and secure when rotating.
[0012] Furthermore, two tracks are fixedly embedded inside the housing, with the two tracks located on the front and rear sides of the guide frame respectively, and pulleys are embedded inside the two tracks.
[0013] The above technical solution, through the cooperation of two tracks and two pulleys, can support the moving frame.
[0014] Furthermore, a movable frame is fixedly connected to the top of the two pulleys, and two connecting plates are fixedly connected to one side of the movable frame, with a connecting rod fixedly connected between the two connecting plates.
[0015] Furthermore, a transmission rod is movably sleeved on the outer side of the connecting rod, a drive disc is movably sleeved on the outer side of the rear end of the transmission rod, a roller is fixedly connected to the rear side of the drive disc, a base plate is fixedly connected to the inner wall of the rear side of the housing, a second motor is fixedly connected to the top of the base plate, and the output shaft of the second motor is fixedly connected to the rear end of the roller.
[0016] The above technical solution, through the cooperation of rollers, drive discs and transmission rods, facilitates the later reciprocating movement of the moving frame.
[0017] Furthermore, a connecting door is provided on the front side of the housing, and the connecting door is movably connected to the housing via a hinge. A connecting mesh is fixedly embedded in both the connecting door and the interior of the housing.
[0018] The above technical solution, by setting up two connecting nets, can accelerate airflow.
[0019] In summary, this application includes the following beneficial technical effects:
[0020] When in use, motor one can be started, and the output shaft of motor one drives the reciprocating screw to rotate. Since the slider and guide frame are matched with the limit groove and guide groove respectively, the two exhaust device bodies can move back and forth in the direction of reciprocating. At this time, the two exhaust device bodies can blow air downward and upward evenly to cool the shaking polypropylene granules evenly, thereby improving the cooling effect and efficiency. Through the above structure, the problem that existing cooling devices have certain limitations in cooling polypropylene granules and cannot cool them evenly is solved. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this application;
[0022] Figure 2 This is a rear sectional perspective view of this application;
[0023] Figure 3This is a partial perspective view of this application;
[0024] Figure 4 For the purposes of this application Figure 1 Enlarged view of the structure at point A in the middle.
[0025] Explanation of the labels in the diagram:
[0026] 1. Housing; 2. Slider; 3. Motor 1; 4. Reciprocating lead screw; 5. Guide frame; 6. Exhaust equipment body; 7. Support wheel; 8. Track; 9. Pulley; 10. Moving frame; 11. Connecting plate; 12. Connecting rod; 13. Transmission rod; 14. Drive disc; 15. Roller; 16. Base plate; 17. Motor 2. Detailed Implementation
[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0028] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0030] Example:
[0031] This application discloses a cooling device for the production of recycled polypropylene pellets. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 4 It includes a housing 1, a cooling mechanism is provided inside the housing 1, and the cooling mechanism extends to the outside of the housing 1;
[0032] The cooling mechanism includes a limiting groove, which is opened on the inner wall of the top of the housing 1. A slider 2 is embedded in the limiting groove. A motor 3 is fixedly connected to the rear side of the housing 1. A reciprocating screw 4 is fixedly connected to the output shaft of the motor 3. The front end of the reciprocating screw 4 passes through the slider 2 and extends to the front side of the housing 1. The reciprocating screw 4 and the slider 2 are connected by a ball nut pair. A guide groove is embedded in one side of the housing 1. A guide frame 5 is embedded in the guide groove. Two exhaust device bodies 6 are fixedly connected to one side of the guide frame 5. The top exhaust device body 6 is fixedly installed to the bottom of the slider 2.
[0033] Please see Figure 2 The two exhaust device bodies 6 are provided with auxiliary components on the outside. The auxiliary components include support wheels 7. The support wheels 7 are fixedly connected to the bottom of the bottom exhaust device body 6. The bottom of the support wheels 7 is in contact with the inner wall of the bottom of the housing 1. The limiting groove matches the slider 2, the guide groove matches the guide frame 5, and the reciprocating screw 4 is connected to the housing 1 by a bearing.
[0034] Please see Figure 2 and Figure 4 Two tracks 8 are fixedly embedded inside the housing 1. The two tracks 8 are located on the front and rear sides of the guide frame 5 respectively. Each track 8 is embedded with a pulley 9. A movable frame 10 is fixedly connected to the top of the two pulleys 9. Two connecting plates 11 are fixedly connected to one side of the movable frame 10. A connecting rod 12 is fixedly connected between the two connecting plates 11.
[0035] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A transmission rod 13 is movably sleeved on the outer side of the connecting rod 12. A drive disc 14 is movably sleeved on the outer side of the rear end of the transmission rod 13. A roller 15 is fixedly connected to the rear side of the drive disc 14. A base plate 16 is fixedly connected to the inner wall of the rear side of the housing 1. A second motor 17 is fixedly connected to the top of the base plate 16. The output shaft of the second motor 17 is fixedly connected to the rear end of the roller 15. A connecting door is provided on the front side of the housing 1. The connecting door and the housing 1 are movably connected by a hinge. A connecting mesh is fixedly embedded inside both the connecting door and the housing 1.
[0036] The implementation principle of this embodiment is as follows: When polypropylene granules are being produced, the connecting door and the moving frame 10 are opened in sequence. Then, the polypropylene granules are placed inside the moving frame 10. At this time, the second motor 17 is turned on. The output shaft of the second motor 17 drives the drive disk 14 to rotate through the roller 15. Then, the drive disk 14, in cooperation with the transmission rod 13, the connecting rod 12 and the two connecting plates 11, drives the moving frame 10 to move back and forth on the two tracks 8, which screens and shakes the polypropylene granules inside, so as to achieve the effect of uniform cooling of polypropylene granules.
[0037] Simultaneously, motor 3 is started, and the output shaft of motor 3 drives the reciprocating screw 4 to rotate. Since the slider 2 and the guide frame 5 are matched with the limiting groove and the guide groove respectively, the two exhaust device bodies 6 can move back and forth in a more stable manner. At this time, the two exhaust device bodies 6 can blow air downwards and upwards evenly to cool the shaking polypropylene particles evenly, thereby improving the cooling effect and efficiency. Through the above structure, the problem that existing cooling devices have certain limitations in cooling polypropylene particles and cannot cool them evenly is solved.
[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A cooling device for producing recycled polypropylene pellets, comprising a housing (1), characterized in that: The housing (1) is provided with a cooling mechanism inside, and the cooling mechanism extends to the outside of the housing (1); The cooling mechanism includes a limiting groove, which is opened on the inner wall of the top of the housing (1). A slider (2) is embedded in the limiting groove. A motor (3) is fixedly connected to the rear side of the housing (1). A reciprocating screw (4) is fixedly connected to the output shaft of the motor (3). The front end of the reciprocating screw (4) passes through the slider (2) and extends to the front side of the housing (1). The reciprocating screw (4) and the slider (2) are connected by a ball nut pair. A guide groove is embedded in one side of the housing (1). A guide frame (5) is embedded in the guide groove. Two exhaust device bodies (6) are fixedly connected to one side of the guide frame (5). The top of the exhaust device body (6) is fixedly installed to the bottom of the slider (2). Auxiliary components are provided on the outside of the two exhaust device bodies (6).
2. The cooling device for producing recycled polypropylene pellets according to claim 1, characterized in that: The auxiliary component includes a support wheel (7), which is fixedly connected to the bottom of the bottom exhaust device body (6), and the bottom of the support wheel (7) is in contact with the inner wall of the bottom of the housing (1).
3. The cooling device for producing recycled polypropylene pellets according to claim 1, characterized in that: The limiting groove matches the slider (2), the guide groove matches the guide frame (5), and the reciprocating screw (4) is connected to the housing (1) by a bearing.
4. A cooling device for producing recycled polypropylene pellets according to claim 1, characterized in that: The housing (1) is fixedly embedded with two tracks (8), which are located on the front and rear sides of the guide frame (5) respectively, and each track (8) is embedded with a pulley (9).
5. A cooling device for producing recycled polypropylene pellets according to claim 4, characterized in that: A movable frame (10) is fixedly connected to the top of the two pulleys (9), and two connecting plates (11) are fixedly connected to one side of the movable frame (10), and a connecting rod (12) is fixedly connected between the two connecting plates (11).
6. A cooling device for producing recycled polypropylene pellets according to claim 5, characterized in that: A transmission rod (13) is movably sleeved on the outside of the connecting rod (12). A drive disc (14) is movably sleeved on the outside of the rear end of the transmission rod (13). A roller (15) is fixedly connected to the rear side of the drive disc (14). A base plate (16) is fixedly connected to the inner wall of the rear side of the housing (1). A second motor (17) is fixedly connected to the top of the base plate (16). The output shaft of the second motor (17) is fixedly connected to the rear end of the roller (15).
7. A cooling device for producing recycled polypropylene pellets according to claim 1, characterized in that: The front side of the housing (1) is provided with a connecting door, which is movably connected to the housing (1) by a hinge, and a connecting mesh is fixedly embedded in both the connecting door and the housing (1).