Drying equipment for polypropylene plastic production

Abstract

The utility model discloses a polypropylene plastic production, which belongs to the technical field of drying equipment for polypropylene plastic production, and comprises a drying cylinder, a drying channel for conveying hot air is fixedly mounted at the top end of the drying cylinder, and an air outlet groove corresponding to the drying channel is formed in the bottom end of the drying cylinder; the closed end of the rotating cylinder is rotationally inserted into the inner wall of the drying cylinder through a bearing, and a plurality of drying grooves are formed in the rotating cylinder; the drying cylinder is sleeved with a sealing door in a threaded mode, the inner wall of the sealing door is fixedly provided with a protruding plate connected to the opening end of the rotating cylinder in an inserted mode, and the two ends of the drying cylinder are fixedly sleeved with fixing rings. And hot air generated by the drying channel blows to different positions of the polypropylene plastic, so that the polypropylene plastic is conveniently overturned and dried, and the drying efficiency of the polypropylene plastic is improved.

Description

Technical Field

[0001] This utility model belongs to the field of polypropylene plastic production technology, specifically relating to a drying device for polypropylene plastic production. Background Technology

[0002] Plastics are polymers formed by polymerization of monomers through addition or condensation reactions. Their composition and shape can be freely altered. They consist of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Polypropylene itself has low hygroscopicity, but raw materials (especially recycled or certain modified materials) may contain trace amounts of moisture or surface-adsorbed water. During high-temperature processing (such as injection molding and extrusion), moisture can vaporize and form bubbles, leading to silver streaks, pores, or internal voids on the surface of the product, affecting its appearance and mechanical properties. Pure polypropylene is not sensitive to water, but if highly hygroscopic fillers (such as glass fiber or calcium carbonate) or functional additives (such as flame retardants) are added, moisture may trigger hydrolysis reactions in these additives, leading to performance degradation (such as reduced strength and color changes). Therefore, the raw materials for polypropylene plastics need to be dried using drying equipment before production.

[0003] Currently, existing drying equipment uses hot air to process polypropylene plastic placed inside a box. For example, patent application number 202123264935.5 discloses a drying equipment for the production of modified polypropylene plastic, including a box body. The top of the box body is connected to a container, and the top of the inner wall of the container is connected to a first partition. The top of the box body is provided with ventilation holes, and the top of the inner wall of the container is connected to a hot air blower. However, because the relatively sealed box body makes it difficult to expel water vapor, the water vapor will condense on the surface of the polypropylene plastic after it cools down, resulting in poor drying effect on the polypropylene plastic. At the same time, the raw materials of polypropylene plastic have different shapes (especially recycled materials or some modified materials), and water may accumulate in the recessed parts of the polypropylene plastic. It is difficult to pour out the water from the fixed polypropylene plastic, which leads to the need for a long drying time to completely dry the water, resulting in low drying efficiency for polypropylene plastic. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a drying equipment for polypropylene plastic production. This drying equipment aims to solve the technical problems of poor drying effect of polypropylene plastic after cooling, water vapor condenses on its surface, water accumulation requires a long drying time to completely dry, and low drying efficiency of polypropylene plastic.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a drying device for polypropylene plastic production, comprising:

[0008] The drying cylinder has a drying channel for conveying hot air fixedly installed at its top and an air outlet slot corresponding to the drying channel at its bottom.

[0009] The rotating drum has one closed end inserted into the inner wall of the drying drum via a bearing, and multiple drying grooves are provided on the rotating drum.

[0010] The sealing door is threaded onto the drying drum, and a protruding plate is fixed to one end of the opening of the rotating drum on its inner wall.

[0011] When using this technical solution, a rotating drum is installed inside the drying drum. Polypropylene plastic raw materials are placed into the rotating drum during drying. The sealing door is threadedly connected to the connecting part, and the convex plate on the sealing door is inserted into the opening of the rotating drum. After the motor is started, it drives the rotating drum to rotate, and the polypropylene plastic is turned over during the rotation. During the turning process, the water accumulated in the polypropylene plastic flows out from the drying tank under the influence of gravity and wind. The hot air generated by the drying channel blows to different positions of the polypropylene plastic, which facilitates the turning and drying of the polypropylene plastic and improves the drying efficiency of the polypropylene plastic.

[0012] Preferably, both ends of the drying cylinder are fixedly fitted with fixing rings, and the bottom ends of the two fixing rings are fixedly installed with support frames.

[0013] Furthermore, a connecting part is provided at the opening of the drying cylinder, the sealing door is threaded onto the connecting part, and a turntable is fixedly installed on the outer wall of the sealing door.

[0014] Furthermore, the outer wall of the convex plate is rotatably engaged with a ring array of supporting balls, and multiple supporting balls are in contact with the inner wall of the rotating cylinder.

[0015] Furthermore, an electric heating rod is fixedly installed at the bottom of the inner wall of the drying channel, and a fan is fixed at the top of the inner wall of the drying channel.

[0016] Furthermore, a dustproof net is provided at the top of the fan, and the dustproof net is embedded and fixed in the drying channel.

[0017] Furthermore, a motor is fixedly installed on the outer wall of the drying cylinder, and the motor shaft passes through the drying cylinder and is fixedly connected to the rotating cylinder.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention features a rotating drum within a drying chamber. Polypropylene plastic raw materials are placed inside the rotating drum during drying. A sealing door is threadedly connected to a connecting part, and a protruding plate on the sealing door is inserted into the opening of the rotating drum. After the motor is started, it drives the rotating drum to rotate, and during the rotation, the polypropylene plastic is turned over. During the turning process, water accumulated in the polypropylene plastic flows out of the drying chamber due to the influence of gravity and wind. The hot air generated by the drying channel blows to different positions of the polypropylene plastic, which facilitates the turning and drying of the polypropylene plastic and improves the drying efficiency of the polypropylene plastic. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. 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 structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the disassembled drying channel structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the sealing door structure of this utility model;

[0025] Figure 4 This is a cross-sectional view of the drying cylinder of this utility model.

[0026] The labels in the attached diagram are as follows: 1. Drying cylinder; 2. Support frame; 3. Fixing ring; 4. Drying channel; 5. Sealing door; 6. Turntable; 7. Fan; 8. Dustproof net; 9. Heating rod; 10. Support ball bearing; 11. Protruding plate; 12. Connecting part; 13. Rotating cylinder; 14. Drying trough; 15. Air outlet trough; 16. Motor. Detailed Implementation

[0027] 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.

[0028] This specific embodiment is a drying device for polypropylene plastic production, and its structural schematic diagram is shown below. Figure 1 and Figure 2 As shown, it includes:

[0029] The drying cylinder 1 has a drying channel 4 for conveying hot air fixedly installed at its top end, and an air outlet slot 15 corresponding to the drying channel 4 is opened at its bottom end.

[0030] The rotating cylinder 13 has one closed end rotatably inserted into the inner wall of the drying cylinder 1 via a bearing, and the rotating cylinder 13 is provided with multiple drying grooves 14.

[0031] The sealing door 5 is threaded onto the drying cylinder 1, and its inner wall is fixed with a protruding plate 11 that is inserted into one end of the opening of the rotating cylinder 13.

[0032] A heating rod 9 is fixedly installed at the bottom of the inner wall of the drying channel 4. The heating rod 9 is of model Hot-07 and has a heating temperature of 100℃ to 200℃ to avoid the polypropylene plastic from melting due to excessive heating temperature. A fan 7 is fixed at the top of the inner wall of the drying channel 4. A JKL-500 type high-power fan 7 is preferred. The sealing door 5 is threadedly connected to the connecting part 12. The protrusion 11 on the sealing door 5 is inserted into the opening of the rotating cylinder 13. After the motor 16 is started, it drives the rotating cylinder 13 to rotate and flips the polypropylene plastic during the rotation. During the flipping process, the water accumulated in the polypropylene plastic flows out from the drying tank 14 under the influence of gravity and wind. The hot air generated by the drying channel 4 blows to different positions of the polypropylene plastic.

[0033] like Figure 3 and Figure 4 As shown, both ends of the drying cylinder 1 are fixedly fitted with fixing rings 3, and the bottom ends of the two fixing rings 3 are fixedly installed with support frames 2. The opening of the drying cylinder 1 is provided with a connecting part 12, and the sealing door 5 is threaded onto the connecting part 12. The outer wall of the sealing door 5 is fixedly installed with a turntable 6. The outer wall of the convex plate 11 is arranged in a ring array and rotates to engage with support balls 10. Multiple support balls 10 are in contact with the inner wall of the rotating cylinder 13. The support balls 10 support the opening of the rotating cylinder 13. During the rotation of the rotating cylinder 13, the multiple support balls 10 rotate synchronously. The support balls 10 are embedded in the convex plate 11 with a structure greater than half. The top of the fan 7 is provided with a dustproof net 8, which is embedded and fixed in the drying channel 4. The outer wall of the drying cylinder 1 is fixedly installed with a motor 16. The shaft of the motor 16 passes through the drying cylinder 1 and is fixedly connected to the rotating cylinder 13. The motor 16 is a ZDM112-4 type low-speed motor 16 with a speed of 5-30 revolutions per minute.

[0034] Working principle: When using the device of this technical solution, hold the turntable 6 and unscrew the sealing door 5 from the drying cylinder 1. The polypropylene plastic raw material is placed into the rotating cylinder 13 during drying. The sealing door 5 is threaded to the connecting part 12. The convex plate 11 on the sealing door 5 is inserted into the opening of the rotating cylinder 13. The supporting ball bearings 10 on the outer wall of the convex plate 11 are in contact with the inner wall of the rotating cylinder 13. After the motor 16 is started, it drives the rotating cylinder 13 to rotate and flips the polypropylene plastic during the rotation. During the flipping process, the water accumulated in the polypropylene plastic flows out from the drying tank 14 under the influence of gravity and wind. The hot air generated by the drying channel 4 blows to different positions of the polypropylene plastic, which facilitates the flipping and drying of the polypropylene plastic and improves the drying efficiency of the polypropylene plastic.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drying device for polypropylene plastic production, characterized in that, include: The drying cylinder (1) has a drying channel (4) for conveying hot air fixedly installed at its top and an air outlet slot (15) corresponding to the drying channel (4) at its bottom. The rotating cylinder (13) has its closed end rotatably inserted into the inner wall of the drying cylinder (1) via a bearing, and multiple drying grooves (14) are provided on the rotating cylinder (13). The sealing door (5) is threaded onto the drying cylinder (1), and its inner wall is fixed with a protruding plate (11) inserted into one end of the opening of the rotating cylinder (13).

2. The drying equipment for polypropylene plastic production according to claim 1, characterized in that, Both ends of the drying cylinder (1) are fixedly fitted with fixing rings (3), and the bottom ends of the two fixing rings (3) are fixedly installed with support frames (2).

3. The drying equipment for polypropylene plastic production according to claim 2, characterized in that, The opening of the drying cylinder (1) is provided with a connecting part (12), the sealing door (5) is threaded onto the connecting part (12), and a turntable (6) is fixedly installed on the outer wall of the sealing door (5).

4. The drying equipment for polypropylene plastic production according to claim 1, characterized in that, The outer wall of the convex plate (11) is arranged in a ring array and is rotatably engaged with supporting balls (10), and multiple supporting balls (10) are in contact with the inner wall of the rotating cylinder (13).

5. A drying device for polypropylene plastic production according to claim 1, characterized in that, A heating rod (9) is fixedly installed at the bottom of the inner wall of the drying channel (4), and a fan (7) is fixed at the top of the inner wall of the drying channel (4).

6. A drying device for polypropylene plastic production according to claim 5, characterized in that, The top of the fan (7) is provided with a dustproof net (8), which is embedded and fixed in the drying channel (4).

7. A drying device for polypropylene plastic production according to claim 6, characterized in that, A motor (16) is fixedly installed on the outer wall of the drying cylinder (1), and the shaft of the motor (16) passes through the drying cylinder (1) and is fixedly connected to the rotating cylinder (13).

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