A drying mechanism of a plastic product granulator
By using centrifugal components to remove moisture from the plastic surface and sponge strips to absorb residual moisture, combined with an exhaust fan to extract water vapor, the problem of long drying time in existing plastic granulators is solved, achieving a rapid and uniform plastic drying effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN YIZHENG PACKAGING MATERIAL CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-19
AI Technical Summary
Existing plastic product granulators struggle to quickly penetrate the material when the raw material has a high moisture content or large water droplets adhering to its surface, resulting in prolonged drying time and reduced drying efficiency.
It adopts a combination structure of centrifugal components and heating tubes. It uses centrifugal force to shake off the moisture on the plastic surface, combined with sponge strips to absorb residual moisture and exhaust fans to extract water vapor, to achieve rapid dehydration and uniform heating.
It significantly reduces the subsequent drying load, shortens the total drying time, improves drying efficiency, and ensures uniform drying of plastic raw materials.
Smart Images
Figure CN224374577U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic processing equipment technology, and in particular to a drying mechanism for a plastic product granulator. Background Technology
[0002] The core function of a plastic granulator is to process plastic raw materials into uniformly sized plastic granules through processes such as melting, mixing, molding, and cutting. The first step of the granulator is to pre-treat the raw materials. Before granulation, water droplets may remain on the plastic and need to be dried by a drying device to ensure that the state of the raw materials meets the requirements of subsequent processing.
[0003] A search revealed that Chinese Patent Publication No. CN221659807U discloses a drying mechanism for a granulator. Users can feed plastic granules through the inlet, which will fall onto the heating plate surface. The user can then start the dryer to begin the drying process. The motor drives a reciprocating screw, which in turn moves a sleeve on its surface left and right. This movement of the sleeve moves the connecting rod and the equalizing plate at its lower end, evenly spreading and turning the plastic granules. This prevents poor drying due to material accumulation on the heating plate surface.
[0004] The above-mentioned and existing related technologies often have the following drawbacks: although plastics can be evenly spread and turned, when the raw material has a high moisture content or large water droplets are attached to the surface, the heat of the heating plate cannot quickly penetrate into the material, resulting in a longer drying time. Summary of the Invention
[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that large water droplets on the surface of plastic are difficult to dry in a short time, which affects the drying efficiency. To this end, we propose a drying mechanism for a plastic product granulator.
[0006] To achieve the above objectives, this application adopts the following technical solution: a drying mechanism for a plastic product granulator, comprising: a centrifugal component, a first cylinder provided at the lower end of the centrifugal component, a second cylinder provided at the lower end of the first cylinder, a third cylinder provided at the lower end of the second cylinder, and an exhaust component provided on the outer surface of the third cylinder;
[0007] The first cylinder includes a circular outer cylinder and a centrifugal inner cylinder disposed at the lower end of the centrifugal component. A water collection channel is provided between the circular outer cylinder and the centrifugal inner cylinder. The centrifugal component includes a support plate disposed at the upper end of the circular outer cylinder. A motor is disposed at the upper end of the support plate. A rotating shaft is disposed through the output end of the motor and passes through the support plate. A centrifugal plate is fixed at one end of the rotating shaft. The centrifugal plate is fixedly connected to the centrifugal inner cylinder. A conical discharge port is fixed on the inner wall of the centrifugal inner cylinder.
[0008] Preferably, the outer surface of the circular outer cylinder is provided with a drain pipe, which is connected to the water collection channel.
[0009] Preferably, an electric push rod is fixed to the inner wall of the second cylinder, and a partition plate is fixed to the output end of the electric push rod, the partition plate being matched with the conical discharge port.
[0010] Preferably, the inner wall of the second cylinder is provided with a sponge strip, one end of which is provided with a bolt. The sponge strip is fixedly connected to the inner wall of the second cylinder by the bolt. Multiple sets of sponge strips are provided, and all sets of sponge strips are located below the partition plate.
[0011] Preferably, the third cylinder includes a conical outer cylinder and a conical inner cylinder disposed at the lower end of the second cylinder, with a cavity between the conical outer cylinder and the conical inner cylinder. A heating pipe is disposed inside the cavity. The conical inner cylinder is connected to the second cylinder, and a valve is disposed at the lower end of the third cylinder. The third cylinder is connected to a granulator through the valve.
[0012] Preferably, the exhaust component includes a support plate disposed on the outer surface of the conical outer cylinder, an exhaust fan disposed at the upper end of the support plate, an exhaust pipe disposed at one end of the exhaust fan, and one end of the exhaust pipe being connected to the conical inner cylinder.
[0013] The technical effects and advantages of this utility model are as follows:
[0014] In this invention, through a motor, a centrifugal inner cylinder, a water collection channel, and a conical discharge port, when the plastic is put into the centrifugal inner cylinder, the motor drives the centrifugal inner cylinder to rotate and generate centrifugal force, which quickly throws out the water on the surface and in the gaps of the plastic. The water enters the water collection channel through the through hole of the centrifugal inner cylinder and is discharged, completing the initial dehydration. The dehydrated raw material enters the subsequent cylinder for further processing through the conical discharge port. The centrifugal pre-dehydration removes a large amount of free water, significantly reducing the subsequent drying load and shortening the total drying time. Attached Figure Description
[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the first cylindrical body of this utility model;
[0018] Figure 3 This is a schematic diagram of the second and third cylindrical bodies of this utility model;
[0019] Figure 4 This is a schematic diagram of the exhaust component structure of this utility model;
[0020] Legend: 1. Centrifuge component; 11. Motor; 12. Support plate; 13. Shaft; 14. Centrifuge plate; 2. First cylinder; 21. Circular outer cylinder; 22. Centrifuge inner cylinder; 23. Water collection channel; 24. Conical discharge port; 25. Drain pipe; 3. Second cylinder; 31. Material separator plate; 32. Electric push rod; 33. Sponge strip; 4. Third cylinder; 41. Conical outer cylinder; 42. Conical inner cylinder; 43. Heating tube; 44. Cavity; 5. Exhaust component; 51. Exhaust fan; 52. Support plate; 53. Exhaust pipe. Detailed Implementation
[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.
[0022] Reference Figures 1-4 As shown, this utility model provides a technical solution: a drying mechanism for a plastic product granulator, comprising: a centrifugal component 1, a first cylinder 2 at the lower end of the centrifugal component 1, a second cylinder 3 at the lower end of the first cylinder 2, a third cylinder 4 at the lower end of the second cylinder 3, and an exhaust component 5 on the outer surface of the third cylinder 4.
[0023] The first cylinder 2 includes a circular outer cylinder 21 and a centrifugal inner cylinder 22 located at the lower end of the centrifugal component 1. A water collection channel 23 is provided between the circular outer cylinder 21 and the centrifugal inner cylinder 22. The centrifugal component 1 includes a support plate 12 located at the upper end of the circular outer cylinder 21. A motor 11 is located at the upper end of the support plate 12. A rotating shaft 13 is provided through the output end of the motor 11 and passes through the support plate 12. A centrifugal plate 14 is fixed to one end of the rotating shaft 13. The centrifugal plate 14 is fixedly connected to the centrifugal inner cylinder 22. A conical discharge port 24 is fixed to the inner wall of the centrifugal inner cylinder 22. Plastic is put into the centrifugal inner cylinder 22, and the motor 11 passes through the support plate. 12 is fixed, and motor 11 provides power to drive the rotating shaft 13 to drive the centrifugal plate 14 and the centrifugal inner cylinder 22 fixed thereto to rotate at high speed. Under the action of centrifugal force, the water on the plastic, such as water droplets left over from washing or water between particles, is quickly thrown out. Centrifugal force can quickly remove a large amount of water from the plastic, thereby reducing the subsequent drying load and shortening the total drying time. The water droplets after centrifugation enter the water collection channel 23 between the circular outer cylinder 21 and the centrifugal inner cylinder 22 through the through hole on the centrifugal inner cylinder 22, and are finally discharged, completing the initial dehydration. The water collection channel 23 directly discharges the water thrown out by centrifugation, effectively preventing water backflow.
[0024] The outer surface of the circular outer cylinder 21 is provided with a drain pipe 25, which is connected to the water collection channel 23. When the centrifugal inner cylinder 22 rotates at high speed, the free water that is thrown out enters the water collection channel 23 through the through hole. The water in the water collection channel 23 flows downward along the inner wall of the circular outer cylinder 21 due to gravity. The collected water eventually flows into the drain pipe 25, which is connected to the bottom of the water collection channel 23, and is discharged directly through the drain pipe 25. This prevents the water from stagnating in the channel and re-entering the centrifugal inner cylinder 22, thus ensuring a stable centrifugal dehydration effect.
[0025] Reference Figure 3 As shown in this embodiment: an electric push rod 32 is fixed to the inner wall of the second cylinder 3, and a partition plate 31 is fixed to the output end of the electric push rod 32. The partition plate 31 matches the conical discharge port 24. When the electric push rod 32 extends, the partition plate 31 fits against the lower end of the conical discharge port 24 to form a seal and block the plastic from falling. When the electric push rod 32 retracts, a gap is formed between the partition plate 31 and the conical discharge port 24. Under the action of gravity, the plastic enters the second cylinder 3 along the gap. The size of the gap can be precisely controlled by the extension and retraction of the electric push rod 32, thereby adjusting the amount of plastic falling per unit time and ensuring that each piece of plastic can fully contact the drying medium.
[0026] The inner wall of the second cylinder 3 is provided with sponge strips 33, one end of which is bolted. The sponge strips 33 are fixedly connected to the inner wall of the second cylinder 3 by bolts. Multiple sets of sponge strips 33 are provided, all located below the partition plate 31. The plastic surface, after being controlled by the partition plate 31, may still have trace amounts of moisture or dampness remaining. Under the action of gravity, this moisture passes through the gaps between the multiple sets of sponge strips 33. The sponge strips 33 are made of high-density hydrophilic sponge. The fluffy and porous structure makes full contact with the plastic surface and absorbs residual moisture through capillary action, directly reducing the energy consumption of subsequent drying.
[0027] Reference Figure 3 and Figure 4 As shown in this embodiment: the third cylinder 4 includes a conical outer cylinder 41 and a conical inner cylinder 42 disposed at the lower end of the second cylinder 3. A cavity 44 is provided between the conical outer cylinder 41 and the conical inner cylinder 42. A heating tube 43 is disposed inside the cavity 44. The conical inner cylinder 42 is connected to the second cylinder 3. A valve is provided at the lower end of the third cylinder 4. The third cylinder 4 is connected to a granulator through the valve. When the heating tube 43 is energized, it releases heat in the cavity 44 between the conical outer cylinder 41 and the conical inner cylinder 42, forming a stable high-temperature zone in the cavity 44. The heat is transferred to the inside of the conical inner cylinder 42 through the cylinder wall, heating and drying the falling plastic. During the falling process, the plastic is in continuous contact with the heated cylinder wall of the conical inner cylinder 42, and is constantly turned over due to gravity, so that the surface of the plastic can be in contact with heat, achieving uniform heating.
[0028] Reference Figure 4 As shown in this embodiment: the exhaust component 5 includes a support plate 52 disposed on the outer surface of the conical outer cylinder 41, an exhaust fan 51 disposed at the upper end of the support plate 52, an exhaust pipe 53 disposed at one end of the exhaust fan 51, and one end of the exhaust pipe 53 connected to the conical inner cylinder 42. During the heating and drying process of the third cylinder 4, the bound water inside the plastic evaporates into water vapor upon heating, which gradually accumulates in the conical inner cylinder 42. The exhaust fan 51 is fixed on the support plate 52 and is connected to the conical inner cylinder 42 through the exhaust pipe 53. After starting, it generates negative pressure, which draws the humid air in the inner cylinder out from the exhaust pipe 53, preventing water vapor from condensing and flowing back, and avoiding secondary moisture absorption.
[0029] Working principle: The plastic raw material to be dried is put into the centrifugal inner cylinder 22. The motor 11 is fixed by the support plate 12 and provides power, driving the rotating shaft 13 to drive the centrifugal plate 14 and the centrifugal inner cylinder 22 to rotate at high speed. The centrifugal force generated throws out the free water on the surface of the plastic. The water enters the water collection channel 23 between the circular outer cylinder 21 and the centrifugal inner cylinder 22 through the through hole of the centrifugal inner cylinder 22, and flows along the inner wall of the channel by gravity. Finally, it is discharged out of the mechanism through the drain pipe 25, completing the initial dehydration and greatly reducing the subsequent drying load. The dehydrated raw material enters the second cylinder 3 through the conical discharge port 24 on the inner wall of the centrifugal inner cylinder 22. The electric push rod 32 on the inner wall of the second cylinder 3 drives the partition plate 31 to extend and retract: when extended, it fits the conical discharge port 24 to form a seal and block the material from falling; when retracted, it forms an adjustable gap. By controlling the size of the gap, the amount of raw material falling is precisely adjusted to ensure that the raw material enters the next stage evenly. The falling raw material passes through multiple The sponge strip 33, which is fixed by bolts, is made of high-density hydrophilic sponge. It adsorbs the trace moisture remaining on the surface of the raw material through capillary action, reducing the energy consumption of subsequent heating and drying. The raw material, which has undergone secondary moisture absorption, enters the third cylinder 4 and falls naturally along the inner wall of the conical inner cylinder 42. The heating tube 43 is energized to release heat and form a stable high-temperature zone. The heat is transferred to the interior through the cylinder wall of the conical inner cylinder 42, indirectly heating the raw material. During the fall, the raw material is turned over by gravity and comes into full contact with the heated cylinder wall, achieving uniform heating and removing the bound water inside the granules. The water vapor generated during the heating process accumulates in the conical inner cylinder 42. The exhaust fan 51 is turned on and connected to the conical inner cylinder 42 through the exhaust pipe 53 to generate negative pressure, which directionally extracts the humid air and prevents water vapor from condensing and flowing back, causing the raw material to absorb moisture again. Finally, the dried raw material enters the granulator through the valve at the bottom of the third cylinder 4, completing the entire drying process.
[0030] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A drying mechanism for a plastic product granulator, characterized in that, include: The centrifugal component has a first cylinder at its lower end, a second cylinder at its lower end, a third cylinder at its lower end, and an exhaust component on the outer surface of the third cylinder. The first cylinder includes a circular outer cylinder and a centrifugal inner cylinder disposed at the lower end of the centrifugal component. A water collection channel is provided between the circular outer cylinder and the centrifugal inner cylinder. The centrifugal component includes a support plate disposed at the upper end of the circular outer cylinder. A motor is disposed at the upper end of the support plate. A rotating shaft is disposed through the output end of the motor and passes through the support plate. A centrifugal plate is fixed at one end of the rotating shaft. The centrifugal plate is fixedly connected to the centrifugal inner cylinder. A conical discharge port is fixed on the inner wall of the centrifugal inner cylinder.
2. The drying mechanism of a plastic product granulator according to claim 1, characterized in that: The outer surface of the circular outer cylinder is provided with a drain pipe, which is connected to the water collection channel.
3. The drying mechanism of a plastic product granulator according to claim 1, characterized in that: An electric push rod is fixed to the inner wall of the second cylinder, and a partition plate is fixed to the output end of the electric push rod. The partition plate is matched with the conical discharge port.
4. The drying mechanism of a plastic product granulator according to claim 3, characterized in that: The inner wall of the second cylinder is provided with a sponge strip, and a bolt is provided at one end of the sponge strip. The sponge strip is fixedly connected to the inner wall of the second cylinder by the bolt. There are multiple sets of sponge strips, and all sets of sponge strips are located below the partition plate.
5. The drying mechanism of a plastic product granulator according to claim 4, characterized in that: The third cylinder includes a conical outer cylinder and a conical inner cylinder disposed at the lower end of the second cylinder. A cavity is provided between the conical outer cylinder and the conical inner cylinder. A heating pipe is disposed inside the cavity. The conical inner cylinder is connected to the second cylinder. A valve is provided at the lower end of the third cylinder. The third cylinder is connected to a granulator through the valve.
6. The drying mechanism of a plastic product granulator according to claim 5, characterized in that: The exhaust component includes a support plate disposed on the outer surface of the conical outer cylinder, an exhaust fan disposed at the upper end of the support plate, an exhaust pipe disposed at one end of the exhaust fan, and one end of the exhaust pipe being connected to the conical inner cylinder.