Plastic particle drying device
By designing a layered drying assembly and a vertical vibration assembly, the problem of small contact area between plastic granules and hot air was solved, enabling simultaneous drying of plastic granules of various sizes and improving drying efficiency and production efficiency.
Patent Information
- Application Number
- CN202520805802.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Existing plastic pellet dryers suffer from problems such as small contact area between plastic pellets and hot air and inability to process plastic pellets of multiple sizes simultaneously, resulting in unsatisfactory drying effects and low production efficiency.
The system employs a layered drying assembly and a vertical vibration assembly. The support shaft is driven to vibrate by a spirally distributed material tray and a cylindrical cam, which increases the contact area between the plastic granules and the hot air and allows plastic granules of different sizes to be dried simultaneously.
It improves drying efficiency, increases the contact area between plastic granules and hot air, simplifies the production process, reduces energy consumption, and enhances production efficiency.
Smart Images
Figure CN223834859U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic granule drying technology, and specifically relates to a plastic granule drying device. Background Technology
[0002] Plastic products are typically made by melting plastic granules and then shaping them into the desired form using molds. Because excessive humidity can easily occur during production and storage, plastic granules generally require drying after melting. Current technology often uses specialized dryers for drying plastic granules, but these dryers typically have the following technical problems: 1. While dispersing the plastic granules through stirring, the granules remain in constant contact, failing to fundamentally increase the contact area between the granules and hot air, resulting in less than ideal drying effects; 2. They cannot dry plastic granules of various sizes simultaneously, requiring batch drying, which increases energy consumption and reduces production efficiency. Summary of the Invention
[0003] In view of this, the purpose of this utility model is to provide a plastic granule drying device to solve the technical problem of small contact area between plastic granules and hot air in the prior art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A plastic granule drying device includes a drying barrel and a support shaft slidably connected to the upper and lower ends of the drying barrel. A layered drying assembly is provided on the outer surface of the support shaft, and a vertical vibration assembly is provided below the support shaft. The layered drying assembly includes four fan-shaped material trays spirally distributed in the vertical direction. Adjacent material trays are spaced apart in the vertical direction, and there is a gap between the outer surface of the material tray and the inner wall of the drying barrel. The central angle of the material tray is less than 90°, and the included angle between adjacent material trays in the horizontal direction is 90°. The vertical vibration assembly includes a cylindrical cam located below the support shaft. The top surface of the cylindrical cam is an inclined plane that gradually rises in the circumferential direction. The highest and lowest points of the inclined plane form a sudden change in height, i.e., a step. A sliding cone with its tip pointing downwards is provided at the center of the bottom of the support shaft, and the tip of the sliding cone abuts against the inclined plane of the cylindrical cam.
[0006] Furthermore, a spherical blunt tip is formed at the tip of the sliding cone;
[0007] Furthermore, the cylindrical cam is cylindrical in shape, with an open top and an integrally formed base plate at the bottom;
[0008] Furthermore, a motor is located below the cylindrical cam, which drives the cylindrical cam to rotate.
[0009] Furthermore, the material tray includes a support frame and a screen that is detachably connected to the support frame;
[0010] Furthermore, a limiting groove is opened at the bottom of the support frame in the horizontal direction. The frame of the screen is inserted into the limiting groove to complete the assembly of the entire material tray. After assembly, the outer side of the screen frame is flush with the outer side of the support frame.
[0011] Furthermore, a through hole is opened at the bottom of the outer wall of the drying barrel, and a hot air blower is connected to the through hole;
[0012] Furthermore, the side wall of the drying barrel is provided with strip-shaped holes opposite to the material tray. The size of the strip-shaped holes is larger than the size of the screen, and the height of the strip-shaped holes is greater than the amplitude of the screen's up-and-down reciprocating movement.
[0013] Furthermore, the bottom of the drying hopper has a centrally raised guide slope, and the bottom of the drying hopper has a discharge port that is directly opposite the foot of the guide slope.
[0014] The beneficial effects of this utility model are as follows:
[0015] (1) Compared with the prior art, by setting up a vertical vibration component, the support shaft and the entire layer drying component reciprocate vertically under the drive of the cylindrical cam. When the sliding cone passes through the step, the support shaft and the entire layer drying component will drop suddenly, thus forming vertical vibration. On the one hand, it makes the plastic particles inside the material tray more dispersed, and gaps appear between the plastic particles, increasing the contact area between the plastic particles and the hot air, which is conducive to improving the drying efficiency. On the other hand, during the vibration process, due to the inertial effect, the moisture attached to the surface of the plastic particles is easily separated from the plastic particles, further accelerating the entire drying process.
[0016] (2) By setting up a layered drying component, the internal space of the drying barrel is reasonably divided so that plastic particles of different sizes can be dried at the same time. When in use, plastic particles of different sizes are put into different trays without having to do so in batches. This simplifies the production process, improves production efficiency, and reduces energy consumption. Attached Figure Description
[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:
[0018] Figure 1 This is a schematic diagram of the plastic granule drying device in Embodiment 1 of this utility model;
[0019] Figure 2 This is a cross-sectional view of the plastic granule drying device in Embodiment 1 of this utility model;
[0020] Figure 3This is a schematic diagram of the layered drying component in Embodiment 1 of this utility model;
[0021] Figure 4 This is a top view of the layered drying assembly in Embodiment 1 of this utility model;
[0022] Figure 5 for Figure 4 A cross-sectional view along the middle AA direction, used to show the internal structure of a single material tray;
[0023] Figure 6 for Figure 5 Enlarged view at point A1;
[0024] Figure 7 This is a schematic diagram of the cylindrical cam in Embodiment 1 of this utility model;
[0025] Figure 8 This is a schematic diagram of the sliding cone in Embodiment 1 of this utility model.
[0026] The following labels are shown in the attached diagram:
[0027] 1. Drying hopper, 101. Cover plate, 102. Vent hole, 103. Support, 104. Guide slope, 105. Discharge port, 106. Baffle, 2. Hot air blower, 3. Support shaft, 4. Layered drying assembly, 401. Material tray, 402. Limiting groove, 403. Screen, 404. Mounting hole, 405. Feeding pipe, 406. Strip hole, 407. Sliding strip, 508. Vertical vibration assembly, 501. Cylindrical cam, 502. Inclined surface, 503. Step, 504. Sliding cone, 505. Blunt tip, 506. Motor. Detailed Implementation
[0028] Example 1, specifically as follows Figures 1-8 As shown.
[0029] A plastic granule drying device includes a drying barrel 1 and a support shaft 3 slidably connected to the upper and lower ends of the drying barrel 1. A layered drying component 4 is provided on the outer side of the support shaft 3, and a vertical vibration component 5 is provided below the support shaft 3.
[0030] like Figure 1 As shown, the drying drum 1 is cylindrical in shape, with a cover plate 101 welded to its top opening for opening and closing. Multiple exhaust holes 102 are formed along the circumference of the cover plate 101. During the drying process, hot air carrying water vapor rises to the top of the drying drum 1 and is discharged through the exhaust holes 102. Multiple supports 103 are welded to the outer wall of the drying drum 1, providing support while maintaining a certain height above the ground.
[0031] A through hole is opened at the bottom of the outer wall of the drying hopper 1, and the through hole is connected to a hot air blower 2. The hot air blower 2 is fixedly connected to the outer wall of the drying hopper 1 by screws. The hot air generated by the hot air blower 2 enters the drying hopper 1 and dries the plastic granules inside the hopper. A vertical support shaft 3 is provided at the center of the drying hopper 1. The axis of the support shaft 3 coincides with the axis of the drying hopper 1. The upper and lower ends of the support shaft 3 are exposed on the cover plate 101 and the bottom of the drying hopper 1, respectively. The connection between the support shaft 3 and the drying hopper 1 is a sliding connection.
[0032] The layered drying assembly 4 includes four spirally arranged material trays 401 along the vertical direction. Adjacent material trays 401 are spaced apart vertically. Each material tray 401 is fan-shaped, with its inner side (smaller diameter) welded to the outer side of the support shaft 3, and its outer side (larger diameter) spaced apart from the inner wall of the drying barrel 1. It is worth noting that in this embodiment, the central angle of the material trays 401 is less than 90°, and the horizontal angle between adjacent material trays 401 is 90°. This prevents interference between the plastic particles contained in different material trays 401. For example, water droplets generated in the upper material tray 401 will not drip into the lower material tray 401, and the lower material tray 401 will not block the rising heat, thus affecting the drying effect of the plastic particles in the upper material tray 401.
[0033] The material tray 401 includes a fan-shaped support frame and a screen 403 detachably connected to the support frame. Specifically, a limiting groove 402 is formed horizontally at the bottom of the support frame. The edge of the screen 403 is inserted into the limiting groove 402 to complete the assembly of the entire material tray 401. After assembly, the outer surface of the screen 403 edge is flush with the outer surface of the support frame. It should be further noted that a mounting hole 404 is formed on the outer surface of the screen 403 edge 404. The mounting hole 404 is a threaded hole. By threading the threaded rod into the mounting hole 404, external force can be applied to the screen 403, facilitating its installation and removal. It should be noted that the diameter of the screen holes on the screen 403 is smaller than the particle size of the corresponding plastic granules. A feeding pipe 405 is provided above the material tray 401. The feeding pipe 405 corresponds to the material tray 401 one by one. The feeding pipe 405 is welded and fixed to the drying barrel 1. Plastic granules are added into the material tray 401 through the feeding pipe 405. A sealing plug (not shown in the figure) is also provided at the inlet of the feeding pipe 405. The sealing plug is made of rubber material and is used to seal the inlet of the feeding pipe 405.
[0034] The rational division of the internal space of the drying hopper 1 allows plastic granules of different sizes to be dried simultaneously. When in use, plastic granules of different sizes can be put into different trays 401 without batching, which simplifies the production process, improves production efficiency, and reduces energy consumption.
[0035] The vertical vibration assembly 5 includes a cylindrical cam 501 located below the support shaft 3. The cylindrical cam 501 is cylindrical in shape, with an open top and a base plate integrally formed at the bottom. More specifically, the top surface of the cylindrical cam 501 is an inclined plane 502 that gradually rises along the circumference, forming a sudden change in height between the highest and lowest points of the inclined plane 502, i.e., a step 503. A motor 506 is located below the cylindrical cam 501. The output shaft of the motor 506 passes through the center of the base plate of the cylindrical cam 501, and the two are fixed together by a key. The motor 506 drives the cylindrical cam 501 to rotate.
[0036] A downward-pointing sliding cone 504 is welded at the center of the bottom of the support shaft 3. The axis of the sliding cone 504 coincides with the axis of the support shaft 3. The tip of the sliding cone 504 abuts against the inclined surface of the cylindrical cam 501. A spherical blunt tip 505 is formed at the tip of the sliding cone 504, thereby reducing the friction and wear between the tip of the sliding cone 504 and the inclined surface of the cylindrical cam 501.
[0037] In use, the rotation of the cylindrical cam 501 drives the support shaft 3 and the entire layered drying assembly 4 to reciprocate vertically. When the sliding cone 504 passes through the step 503, the support shaft 3 and the entire layered drying assembly 4 will experience a sudden drop, thereby forming vertical vibration. On the one hand, this makes the plastic particles inside the material tray 401 more dispersed, with gaps between the plastic particles, increasing the contact area between the plastic particles and the hot air, which is beneficial to improving drying efficiency. On the other hand, during the vibration process, due to inertia, the moisture attached to the surface of the plastic particles is easily separated from the plastic particles, further accelerating the entire drying process.
[0038] like Figure 1 As shown, a strip-shaped hole 406 is provided on the side wall of the drying barrel 1, opposite to the material tray 401. The size of the strip-shaped hole 406 is larger than the size of the screen 403, meaning that the screen 403 can pass through the strip-shaped hole 406 and be inserted into the limiting groove 402. It is worth noting that in this embodiment, the height of the strip-shaped hole 406 is greater than the amplitude of the up-and-down reciprocating movement of the screen 403. A sliding groove extending away from the direction of the strip-shaped hole 406 is provided on one side of the horizontal direction of the strip-shaped hole 406. A sliding strip 407 is slidably connected in the sliding groove, and the strip-shaped hole 406 is opened and closed by the sliding strip 407.
[0039] The bottom of the drying barrel 1 has a centrally raised guide slope 104. The bottom of the drying barrel 1 has a strip-shaped discharge port 105. The discharge port 105 is directly opposite the foot of the guide slope 104. A vertically extending receiving groove is provided directly above the discharge port 105. A baffle 106 is slidably connected in the receiving groove. The opening and closing of the discharge port 105 is achieved by the baffle 106.
[0040] In use, firstly, the screen 403 is inserted into the limiting groove 402 through the strip hole 406 to complete the assembly of the material tray 401, and then plastic granules are fed into the material tray 401 through the feeding pipe 405. Then, the plastic granules in the material tray 401 are dried. Finally, the screen 403 is pulled out in batches so that the plastic granules in the screen 403 fall onto the guide slope 104 and slide down the guide slope 104 to the discharge port 105, thus completing the collection of plastic granules.
[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A plastic granule drying device, characterized in that, The device includes a drying hopper and a support shaft that is slidably connected to the upper and lower ends of the drying hopper. A layered drying assembly is provided on the outer surface of the support shaft, and a vertical vibration assembly is provided below the support shaft. The layered drying assembly includes four fan-shaped material trays that are spirally distributed in the vertical direction. Adjacent material trays are spaced apart in the vertical direction, and there is a gap between the outer surface of the material tray and the inner wall of the drying hopper. The central angle of the material tray is less than 90°, and the angle between adjacent material trays in the horizontal direction is 90°. The vertical vibration assembly includes a cylindrical cam located below the support shaft. The top surface of the cylindrical cam is an inclined plane that gradually rises in the circumferential direction. The highest and lowest points of the inclined plane form a sudden change in height, i.e., a step. A sliding cone with its tip pointing downwards is provided at the center of the bottom of the support shaft. The tip of the sliding cone abuts against the inclined plane of the cylindrical cam.
2. The plastic granule drying device according to claim 1, characterized in that, The tip of the sliding cone has a spherical blunt tip.
3. The plastic granule drying device according to claim 2, characterized in that, The cylindrical cam is cylindrical in shape, with an open top and a base plate integrally formed at the bottom.
4. The plastic granule drying device according to claim 3, characterized in that, A motor is located below the cylindrical cam, which drives the cylindrical cam to rotate.
5. The plastic granule drying device according to claim 1, characterized in that, The material tray includes a support frame and a screen that is detachably connected to the support frame.
6. The plastic granule drying apparatus according to claim 5, characterized in that, A limiting groove is opened at the bottom of the support frame in the horizontal direction. The frame of the screen is inserted into the limiting groove to complete the assembly of the entire material tray. After assembly, the outer side of the screen frame is flush with the outer side of the support frame.
7. The plastic granule drying device according to claim 1, characterized in that, There is a through hole at the bottom of the outer wall of the drying barrel, which is connected to a hot air blower.
8. The plastic granule drying apparatus according to claim 1, characterized in that, The side wall of the drying barrel has a strip-shaped hole opposite to the material tray. The size of the strip-shaped hole is larger than the size of the screen, and the height of the strip-shaped hole is greater than the amplitude of the screen's up-and-down reciprocating movement.
9. The plastic granule drying device according to claim 1, characterized in that, The bottom of the drying hopper has a centrally raised guide slope, and the bottom of the drying hopper has a discharge port that is directly opposite the foot of the guide slope.