Efficient hot air dryer for polypropylene regenerated particles

By designing a high-efficiency hot air dryer that includes a shell, cylinder, ventilation holes, electric heating tubes and fan assembly, the problems of uneven heating and low efficiency in the hot air drying process of polypropylene recycled granules are solved, and uniform heating and rapid drying of polypropylene recycled granules are achieved.

CN224089393UActive Publication Date: 2026-04-07TONGLING WANLONG TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-28
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

In the existing technology, the hot air drying process of recycled polypropylene granules suffers from uneven heating and low drying efficiency.

Method used

A high-efficiency hot air dryer was designed, comprising a shell, a cylinder, ventilation holes, an electric heating element, a fan assembly, a rotating disk, and a drive motor. The cylinder's rotation and the fan assembly's gas flow enable uniform heating and rapid drying of recycled polypropylene granules.

Benefits of technology

This improves the drying efficiency of recycled polypropylene granules, avoids uneven heating, and achieves a fast and efficient hot air drying process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of hot air drying, and discloses a polypropylene regenerated particle efficient hot air dryer which comprises a shell, a cylinder is arranged in the upper side of the shell, a plurality of ventilation holes are evenly formed in the outer end of the middle of the cylinder, bearing assemblies are arranged on the outer sides of the two ends of the cylinder, and a sealing plate is fixedly connected to one end face of the cylinder. One side of the sealing plate is in contact with a rotating disc, and a plurality of inserting holes are uniformly formed in the periphery of the rotating disc; according to the device, through the arranged shell, main body bearing of the structure on the shell is facilitated, and meanwhile the arranged cylinder, ventilation holes, a sealing plate, a rotating disc, an inserting hole, an inserting rod, a driving motor, an electric heating pipe, a connecting strip, a first hanging rod, a circulation hole, a pipe barrel, a fan set, an auxiliary assembly and two bearing assemblies are matched; and polypropylene regenerated particles can be conveniently taken and placed in the cylinder, and meanwhile, the polypropylene regenerated particles can be conveniently and rapidly dried through hot air.
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Description

Technical Field

[0001] This application relates to the field of hot air drying technology, and more specifically, to a high-efficiency hot air dryer for recycled polypropylene granules. Background Technology

[0002] Polypropylene is a polymer formed by the addition polymerization of propylene. It is a white, waxy material that is transparent and lightweight. Polypropylene is a high-performance thermoplastic synthetic resin and a colorless, semi-transparent, lightweight, general-purpose thermoplastic plastic.

[0003] Currently, the processing of recycled polypropylene granules involves a hot air drying process. However, the existing hot air drying process for recycled polypropylene granules generally only involves surface drying with hot air, which results in uneven heating of the recycled polypropylene granules and low drying efficiency.

[0004] To address the aforementioned issues, this application provides a high-efficiency hot air dryer for recycled polypropylene granules. Utility Model Content

[0005] The high-efficiency hot air dryer for recycled polypropylene granules provided in this application adopts the following technical solution:

[0006] A high-efficiency hot air dryer for recycled polypropylene granules includes a shell. A cylinder is located inside the upper side of the shell. Multiple ventilation holes are evenly distributed at the outer end of the cylinder's middle section. Support components are located on the outer sides of both ends of the cylinder. A sealing plate is fixedly connected to one end face of the cylinder. A rotating disk contacts one side of the sealing plate. Multiple insertion holes are evenly distributed around the circumference of the rotating disk. An insertion rod is movably inserted into the inner wall of each insertion hole. Each insertion rod is fixedly connected to the end face of the sealing plate facing away from the cylinder. A drive motor is connected to the center of the end face of the rotating disk facing away from the sealing plate via a rotating shaft. The drive motor is fixed... The cylinder is mounted on one outer surface of the housing, and the rotating shaft is rotatably sleeved through one end of the housing. An auxiliary component is provided at the open end of the cylinder facing away from the sealing plate. Multiple electric heating tubes are linearly and evenly distributed at intervals on the outer side of the middle of the cylinder. The top ends of the multiple electric heating tubes are fixedly connected to a connecting strip. A hanging rod is fixedly connected to the center of the top of the connecting strip. The top of the hanging rod is fixedly connected to the inner wall of the top of the housing. Multiple flow holes are matrix-shaped on both sides of the top of the housing. Tubes are fixedly sleeved through both sides of the lower end of the housing. Fan groups are provided inside the two tubes.

[0007] Through the above technical solution, the connecting strip and the hanging rod can achieve the connection and fixation of multiple electric heating tubes.

[0008] Furthermore, each of the fan assemblies has protective frames distributed on both sides, and the protective frames on both sides are fixedly installed on the inner wall positions at both ends of each tube.

[0009] Through the above technical solution, the protective frame achieves the safety protection function on both sides of the fan assembly.

[0010] Furthermore, the auxiliary component includes a hatch rotatably mounted on the outer surface of the housing facing away from the drive motor. The hatch has a hatch opening on one side, which is through-hole at one end of the housing. Multiple connecting rods pass through the inner side of the hatch. One end of the multiple connecting rods is fixedly connected to the hatch, and the other end of the multiple connecting rods is fixedly connected to a limiting plate. The limiting plate contacts the opening at one end of the cylinder facing away from the sealing plate. The inner diameter of the hatch is smaller than the outer diameter of the hatch, and the inner diameter of the hatch is larger than the diameter of the limiting plate and the outer diameter of the cylinder.

[0011] Furthermore, a handle ring is fixedly installed on one side of the outer end face of the hatch, and an electromagnetic lock is provided at the connection between one side of the hatch and the outer surface of one end of the housing.

[0012] Through the above technical solution, the auxiliary component enables the movable sealing action on one side of the cylinder, facilitating the loading and unloading of polypropylene recycled granular material in the cylinder.

[0013] Furthermore, the support assembly includes a support cylinder located on the outer side of one end of the cylinder. The support cylinder is located inside the shell, and a second hanger is fixedly connected to the outer wall of the top of the support cylinder. The top of the second hanger is fixedly connected to the inner wall of the top of the shell. Multiple sets of limiting sliding structures are evenly distributed around the inner side wall of the support cylinder.

[0014] Furthermore, the limiting sliding structure includes a limiting cover, a sliding ball is slidably sleeved on the inner wall of the limiting cover, and one side of the sliding ball partially extends out of the interior of the limiting cover. A fixing rod is fixedly connected to one outer surface of the limiting cover, and one end of the fixing rod is fixedly connected to the inner side wall of the supporting cylinder.

[0015] Through the above technical solution, the support component achieves a rotatable and stable support function for the cylinder.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] The shell structure provided in this application facilitates the support of the upper structure while, in conjunction with the cylindrical shell, ventilation holes, sealing plate, rotating disc, insertion hole, insertion rod, drive motor, heating element, connecting strip, hanging rod, flow hole, tube, fan assembly, auxiliary components, and two sets of support components, allows for easy loading and unloading of polypropylene recycled granules within the cylinder, while also enabling rapid and efficient hot air drying. This prevents uneven heating during the drying process of the polypropylene recycled granules and effectively improves the drying efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a partial structural diagram of this application;

[0020] Figure 3 This is a partial exploded view of this application;

[0021] Figure 4 This is a schematic diagram of the first partial structure of this application;

[0022] Figure 5 This is a schematic diagram of the second partial structure of this application.

[0023] Explanation of the labels in the diagram:

[0024] 1. Shell; 2. Cylinder; 3. Ventilation hole; 4. Sealing plate; 5. Rotating disc; 6. Insertion hole; 7. Insertion rod; 8. Drive motor; 9. Heating element; 10. Connecting strip; 11. Lifting rod one; 12. Flow hole; 13. Tube; 14. Fan assembly; 15. Hatch cover; 16. Limiting plate; 17. Connecting rod; 18. Support cylinder; 19. Lifting rod two; 20. Limiting cover; 21. Sliding ball; 22. Fixing rod. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Example:

[0029] This application discloses a high-efficiency hot air dryer for recycled polypropylene granules. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The device includes a housing 1, with a cylinder 2 inside the upper side of the housing 1. Multiple ventilation holes 3 are evenly distributed at the outer end of the middle of the cylinder 2, and support components are provided on the outer sides of both ends of the cylinder 2. A sealing plate 4 is fixedly connected to one end face of the cylinder 2, and a rotating disk 5 contacts one side of the sealing plate 4. Multiple insertion holes 6 are evenly distributed around the outer circumference of the rotating disk 5, and an insertion rod 7 is movably inserted into the inner wall of each insertion hole 6. Each insertion rod 7 is fixedly connected to the end face of the sealing plate 4 facing away from the cylinder 2. A drive motor 8 is connected to the center of the end face of the rotating disk 5 facing away from the sealing plate 4 via a rotating shaft. The drive motor 8 is fixedly installed on one outer surface of the housing 1, and the rotating shaft is rotatably sleeved on one end of the housing 1. The cylinder 2... An auxiliary component is provided at the opening end facing away from the sealing plate 4. Multiple electric heating tubes 9 are linearly and uniformly distributed at intervals on the outer side of the middle part of the cylinder 2. The top ends of the multiple electric heating tubes 9 are fixedly connected to a connecting strip 10. A hanging rod 11 is fixedly connected to the center of the top of the connecting strip 10. The top of the hanging rod 11 is fixedly connected to the inner wall of the top of the shell 1. Multiple flow holes 12 are matrix-shaped on both sides of the top of the shell 1. Tube cylinders 13 are fixedly sleeved and installed through both sides of the lower end of the shell 1. Fan groups 14 are provided inside the two tube cylinders 13. Protective frames are distributed on both sides of each fan group 14. The protective frames on both sides are fixedly installed on the inner walls at both ends of each tube cylinder 13.

[0030] The auxiliary components include a hatch 15 rotatably mounted on the outer surface of the housing 1 facing away from the drive motor 8. A hatch is provided on one side of the hatch 15, which is opened through one end of the housing 1. Multiple connecting rods 17 pass through the inner side of the hatch. One end of the multiple connecting rods 17 is fixedly connected to the hatch 15, and the other end of the multiple connecting rods 17 is fixedly connected to a limiting plate 16. The limiting plate 16 contacts the opening at the end of the cylinder 2 facing away from the sealing plate 4. The inner diameter of the hatch is smaller than the outer diameter of the hatch 15, and the inner diameter of the hatch is larger than the diameter of the limiting plate 16 and the outer diameter of the cylinder 2. A handle ring is fixedly installed on one side of the outer end face of the hatch 15, and an electromagnetic lock is provided at the connection between one side of the hatch 15 and the outer surface of one end of the housing 1.

[0031] The support assembly includes a support cylinder 18 located on the outer side of one end of the cylinder 2. The support cylinder 18 is located inside the housing 1, and a second hanger 19 is fixedly connected to the outer wall of the top of the support cylinder 18. The top of the second hanger 19 is fixedly connected to the inner wall of the top of the housing 1. Multiple sets of limiting sliding structures are evenly distributed around the inner wall of the support cylinder 18. The limiting sliding structure includes a limiting cover 20. A slider 21 is slidably sleeved on the inner wall of the limiting cover 20. One side of the slider 21 extends partially out of the interior of the limiting cover 20. A fixing rod 22 is fixedly connected to the outer surface of one side of the limiting cover 20. One end of the fixing rod 22 is fixedly connected to the inner wall of the support cylinder 18.

[0032] The bottom rear side of the housing 1 is movably equipped with a cabinet door (not shown in the attached figure). With the cabinet door, it is possible to regularly clean up any particles that accidentally fall during the loading and unloading of polypropylene recycled particles, thereby effectively improving the overall practicality.

[0033] The implementation principle of this embodiment is as follows: During use, while opening the cover 15, the limiting disc 16 is moved away from the opening on one side of the cylinder 2. Then, the polypropylene recycled granules to be dried are put into the inside of the cylinder 2, causing the cover 15 to reset. At the same time, the drive motor 8 is started, and the cylinder 2 is driven to rotate by rotating the disc 5 and each insertion hole 6 and insertion rod 7, thereby causing the material in the cylinder 2 to roll. At the same time, each heating tube 9 is turned on, so that the periphery of the cylinder 2 is heated and dried. Simultaneously, the two fan groups 1 are started. 4. Under the action of accelerating the flow of gas inside and outside the shell 1, the gas outside the shell 1 enters its interior through multiple flow holes 12, and is then heated by the electric heating tube 9 and passes through multiple ventilation holes 3 on the cylinder 2 to achieve efficient hot air drying of the material inside the cylinder 2. The gas inside the shell 1 is discharged by the side tubes 13 and the fan group 14. During the passive rotation of the cylinder 2, its outer surfaces on both sides are in a limited sliding engagement with each sliding ball 21, while each sliding ball 21 performs limited rolling work inside each limiting cover 20.

[0034] After the material is dried by hot air, the cylinder 2 can be pulled out from inside the shell 1 by opening the hatch 15 and utilizing the hatch design. This facilitates the removal of the dried material, and during this process, each insert 7 at one end of the sealing plate 4 is separated from the insertion hole 6.

[0035] 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 high-efficiency hot air dryer for recycled polypropylene granules, comprising a shell (1), characterized in that: The upper side of the housing (1) is provided with a cylinder (2). Multiple ventilation holes (3) are evenly opened at the outer end of the middle part of the cylinder (2). Support components are provided on the outer sides of both ends of the cylinder (2). A sealing plate (4) is fixedly connected to one end face of the cylinder (2). A rotating disk (5) is in contact with one side of the sealing plate (4). Multiple insertion holes (6) are evenly opened on the outer circumference of the rotating disk (5). An insertion rod (7) is movably inserted into the inner wall of each insertion hole (6). Each insertion rod (7) is fixedly connected to the end face of the sealing plate (4) facing away from the cylinder (2). A drive motor (8) is connected to the center of the end face of the rotating disk (5) facing away from the sealing plate (4) through a rotating shaft. The drive motor (8) is fixedly installed on one side of the housing (1). The outer surface, and the rotating shaft is rotatably sleeved on one side of the housing (1). The cylinder (2) is provided with an auxiliary component on the side opening facing away from the sealing plate (4). Multiple electric heating tubes (9) are linearly and uniformly distributed on the outer side of the middle part of the cylinder (2). The top of the multiple electric heating tubes (9) is fixedly connected to a connecting strip (10). The center of the top of the connecting strip (10) is fixedly connected to a first hanging rod (11). The top of the first hanging rod (11) is fixedly connected to the inner wall of the top of the housing (1). Multiple flow holes (12) are matrix-shaped on both sides of the top of the housing (1). Tubes (13) are fixedly sleeved on both sides of the lower end of the housing (1). Fan groups (14) are provided inside the two tubes (13).

2. The high-efficiency hot air dryer for recycled polypropylene granules according to claim 1, characterized in that: Each of the fan units (14) has protective frames distributed on both sides, and the protective frames on both sides are fixedly installed on the inner wall positions at both ends of each tube (13).

3. The high-efficiency hot air dryer for recycled polypropylene granules according to claim 1, characterized in that: The auxiliary component includes a hatch (15) rotatably mounted on the outer surface of the housing (1) facing away from the drive motor (8). The hatch (15) has a hatch on one side, which is opened through one end of the housing (1). Multiple connecting rods (17) pass through the inner side of the hatch. One end of the multiple connecting rods (17) is fixedly connected to the hatch (15), and the other end of the multiple connecting rods (17) is fixedly connected to a limiting plate (16). The limiting plate (16) contacts the opening at one end of the cylinder (2) facing away from the sealing plate (4). The inner diameter of the hatch is smaller than the outer diameter of the hatch (15), and the inner diameter of the hatch is larger than the diameter of the limiting plate (16) and the outer diameter of the cylinder (2).

4. The high-efficiency hot air dryer for recycled polypropylene granules according to claim 3, characterized in that: A handle ring is fixedly installed on one side of the outer end face of the hatch (15), and an electromagnetic lock is provided at the connection between one side of the hatch (15) and the outer surface of one end of the shell (1).

5. The high-efficiency hot air dryer for recycled polypropylene granules according to claim 1, characterized in that: The supporting assembly includes a supporting cylinder (18) located on the outer side of one end of the cylinder (2). The supporting cylinder (18) is located inside the shell (1), and a second hanging rod (19) is fixedly connected to the outer side wall of the top of the supporting cylinder (18). The top of the second hanging rod (19) is fixedly connected to the inner wall of the top of the shell (1). Multiple sets of limiting sliding structures are evenly distributed around the inner side wall of the supporting cylinder (18).

6. The high-efficiency hot air dryer for recycled polypropylene granules according to claim 5, characterized in that: The limiting sliding structure includes a limiting cover (20), a sliding ball (21) is slidably sleeved on the inner wall of the limiting cover (20), and one side of the sliding ball (21) extends partially out of the interior of the limiting cover (20). A fixing rod (22) is fixedly connected to the outer surface of one side of the limiting cover (20), and one end of the fixing rod (22) is fixedly connected to the inner wall of the support cylinder (18).