Recyclable drying device for plastic particle production
By designing a recirculating drying device, which uses an air pump to circulate and heat hot air in combination with a spiral guide plate, the problem of heat energy waste in existing drying devices is solved, and the efficient utilization of heat and the improvement of drying efficiency are achieved.
Patent Information
- Application Number
- CN202423313150.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing drying equipment, the density of hot air is lower than that of room temperature air when drying plastic granules, resulting in wasted heat energy, and the hot air cannot be effectively utilized after it rises.
Design a recirculating drying device for plastic granule production. The device uses an air pump to send hot air from the sleeve back to the heating rod for secondary heating, and then sends it back into the sleeve to dry the plastic granules. The device also incorporates a spiral guide plate to improve the contact efficiency between the hot air and the plastic granules.
This technology enables the recycling of heat, reduces energy waste, improves drying efficiency, and saves space in the drying equipment.
Smart Images
Figure CN223657385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic pellet production technology, and in particular to a recyclable drying device for plastic pellet production. Background Technology
[0002] Plastic granules refer to granular plastics, which are generally divided into three categories: general-purpose plastics, engineering plastics, and specialty plastics. General-purpose plastics include polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc. These materials are widely used in daily life and industrial production. Engineering plastics, such as polyamide, polycarbonate, and polyoxymethylene, have excellent physical and chemical properties and are often used in occasions that require high strength and special functions.
[0003] When producing plastic granules using an extruder, the granules are cooled with water after extrusion to ensure proper molding. This necessitates subsequent drying. Existing drying equipment typically places the granules on a conveyor belt, with a fan blowing hot air onto the conveyor surface. However, hot air, being less dense than room temperature air, rises and dissipates upon contact with the granules, resulting in significant energy waste. Therefore, we propose a recirculating drying device for plastic granule production to address these issues. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a recyclable drying device for the production of plastic granules.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a recyclable drying device for plastic granule production is designed, including a drying tank, at least three spaced support legs are installed at the bottom edge of the drying tank, a support shaft is coaxially provided inside the drying tank, the end of the support shaft is fixed to the upper and lower ends of the drying tank, and a spiral guide plate is provided on the support shaft, the inner side of the guide plate is fixed to the support shaft.
[0006] A sleeve is provided on the outside of the guide plate. The end of the sleeve is fixed to the upper and lower ends of the drying tank. Multiple ventilation holes are provided on the sleeve at intervals. The outer side of the guide plate is fitted with the inner wall of the sleeve with a clearance.
[0007] Several heating rods are arranged at intervals along the outer side of the sleeve. The top of the heating rods is fixed to the top of the drying tank, while several cross-flow fans are arranged at intervals on the outer wall of the drying tank.
[0008] An exhaust pipe is installed on the top of the drying tank. One end of the exhaust pipe is placed inside the sleeve, and the other end of the exhaust pipe is connected to the inlet of the air pump. The air pump is installed on the top of the drying tank, and an exhaust pipe is installed on the outlet of the air pump. The other end of the exhaust pipe is connected to the annular cover. The annular cover is fixed to the bottom of the drying tank, and the frontal projection of the annular cover is located between the drying tank and the sleeve. Multiple through holes are opened at the bottom of the drying tank, and the through holes correspond to the annular cover.
[0009] Preferably, a control cabinet is installed on the outer wall of the drying tank, and a controller is installed inside the control cabinet. The controller is connected to the crossflow fan, air pump and heating rod respectively through wires.
[0010] Preferably, a temperature sensor is installed on the inner wall of the sleeve, and the temperature sensor is connected to the controller via a wire.
[0011] Preferably, the guide plate has multiple spaced-apart ventilation holes that penetrate the guide plate.
[0012] Preferably, an insertion hole is provided at the top of the drying tank, a heating rod is placed inside the drying tank through the insertion hole, and the top of the heating rod is threadedly connected to the inner wall of the insertion hole, while a handle is installed on the top of the heating rod.
[0013] Preferably, a feeding port is provided on one side of the top of the drying tank, and a discharge port is provided at the bottom of the drying tank. The frontal projection of the discharge port is located on the side of the support shaft. A discharge pipe is provided below the discharge port and is fixed to the bottom of the drying tank.
[0014] Preferably, a flow guide seat is provided at the bottom of the sleeve, the flow guide seat is fixed on the bottom of the drying tank, the top surface of the flow guide seat is inclined, the outer wall of the flow guide seat is in clearance fit with the inner wall of the sleeve, and the bottom of the flow guide seat corresponds to the discharge port.
[0015] The design scheme proposed in this utility model has the following beneficial effects in application:
[0016] 1. This recirculating drying device for plastic granule production uses an air pump to send hot air from the top of the sleeve through the annular cover to the bottom between the drying tank and the sleeve. This allows the hot air that cannot be used at the top of the drying tank to be sent back to the heating rod for secondary heating and then sent back into the sleeve to dry the plastic granules. This recirculates the heat and avoids energy waste.
[0017] 2. The recirculating drying device for plastic granule production uses a spiral guide plate to allow the plastic granules to slide down the spiral plate, which not only allows the plastic granules to fully contact the hot air, but also saves the overall space occupied by the drying tank. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the internal structure of the drying tank of this utility model;
[0021] Figure 4 This is a schematic diagram of the internal structure of the sleeve of this utility model.
[0022] In the diagram: 1. Drying tank; 2. Sleeve; 3. Insertion hole; 4. Heating rod; 5. Handle; 6. Crossflow fan; 7. Guide seat; 8. Discharge pipe; 9. Support shaft; 10. Guide plate; 11. Feed port; 12. Air extraction pipe; 13. Air pump; 14. Air outlet pipe; 15. Annular cover; 16. Through hole; 17. Support leg. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Reference Figures 1-4 A recyclable drying device for plastic pellet production includes a drying tank 1, with at least three spaced-apart support legs 17 installed at the bottom edge of the drying tank 1 for supporting the drying tank 1.
[0025] During use, a feeding port 11 is provided on the top side of the drying tank 1. The plastic granules to be dried are added into the drying tank 1 through the feeding port 11. In actual use, an elevator is provided on the outside of the drying tank 1 to lift the plastic granules into the feeding port 11. A support shaft 9 is coaxially provided inside the drying tank 1. The end of the support shaft 9 is fixed to the upper and lower ends of the drying tank 1. A spiral guide plate 10 is provided on the support shaft 9. The inner side of the guide plate 10 is fixed to the support shaft 9. The plastic granules falling into the drying tank 1 will fall on the guide plate 10 and slide down the spiral along the guide plate 10.
[0026] As the plastic particles slide down, such as Figure 1 and Figure 3As shown, a sleeve 2 is provided on the outer side of the guide plate 10. The end of the sleeve 2 is fixed to the upper and lower ends of the drying tank 1. The sleeve 2 has multiple ventilation holes arranged at intervals, and the outer side of the guide plate 10 is fitted with the inner wall of the sleeve 2 with a clearance. Several heating rods 4 are arranged at intervals along the outer side of the sleeve 2. The top of the heating rods 4 is fixed to the top of the drying tank 1. Several cross-flow fans 6 are arranged at intervals on the outer wall of the drying tank 1. The heating rods 4 heat the air between the drying tank 1 and the sleeve 2. Then, under the action of the cross-flow fans 6, the heated air is sent into the sleeve 2 through the ventilation holes, thereby heating and drying the sliding plastic particles. In order to improve the contact between the plastic particles and the hot air, the guide plate 10 has multiple ventilation holes arranged at intervals and penetrating the guide plate 10, which allows the hot air to pass through the guide plate 10 and contact the plastic particles, thereby allowing the plastic particles to better contact the hot air.
[0027] Furthermore, an insertion hole 3 is provided on the top of the drying tank 1. The heating rod 4 passes through the insertion hole 3 and is placed inside the drying tank 1. The top of the heating rod 4 is threadedly connected to the inner wall of the insertion hole 3. A handle 5 is installed on the top of the heating rod 4 to facilitate the disassembly and installation of the heating rod 4 and to facilitate the maintenance and repair of the heating rod 4.
[0028] During the drying process of plastic granules, hot air continuously rises and accumulates at the top of sleeve 2. At this time, an exhaust pipe 12 is installed at the top of the drying tank 1. One end of the exhaust pipe 12 is placed inside sleeve 2, and the other end is connected to the inlet of air pump 13. Air pump 13 is installed at the top of the drying tank 1, and an exhaust pipe 14 is installed at the outlet of air pump 13. The other end of exhaust pipe 14 is connected to an annular cover 15, which is fixed to the bottom of the drying tank 1. The frontal projection of the cover 15 is located between the drying tank 1 and the sleeve 2. Multiple through holes 16 are provided at the bottom of the drying tank 1, which correspond to the annular cover 15. The air pump 13 draws air from the top of the sleeve 2 and sends it into the annular cover 15. The air in the annular cover 15 flows back into the vicinity of the heating rod 4 through the through holes 16 and is then reheated by the heating rod 4. Subsequently, the crossflow fan 6 sends it back into the sleeve 2 to dry the plastic particles, saving energy consumption in the entire drying process.
[0029] Finally, the plastic granules slide down the guide plate 10 to the bottom of the drying tank 1, such as Figure 2 and Figure 4As shown, a discharge port is provided at the bottom of the drying tank 1, and the frontal projection of the discharge port is located on the side of the support shaft 9. A discharge pipe 8 is provided below the discharge port and is fixed to the bottom of the drying tank 1. A guide seat 7 is provided at the bottom of the sleeve 2 and is fixed to the bottom of the drying tank 1. The top surface of the guide seat 7 is inclined, and the outer wall of the guide seat 7 is in clearance fit with the inner wall of the sleeve 2. The bottom of the guide seat 7 corresponds to the discharge port, so that the plastic particles can gather along the guide seat 7 to the discharge port and be discharged through the discharge pipe 8.
[0030] It should be noted that a control cabinet is installed on the outer wall of the drying tank 1, and a controller is installed inside the control cabinet. The controller is connected to the crossflow fan 6, the air pump 13, and the heating rod 4 through wires to control the drying process. A temperature sensor is installed on the inner wall of the sleeve 2. The temperature sensor is connected to the controller through wires to monitor the temperature inside the sleeve 2.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A recyclable drying device for producing plastic granules, characterized in that: The equipment includes a drying tank (1), at least three spaced support legs (17) are installed at the bottom edge of the drying tank (1), a support shaft (9) is coaxially provided inside the drying tank (1), the end of the support shaft (9) is fixed to the upper and lower ends of the drying tank (1), a spiral guide plate (10) is provided on the support shaft (9), and the inner side of the guide plate (10) is fixed to the support shaft (9); A sleeve (2) is provided on the outside of the guide plate (10). The end of the sleeve (2) is fixed to the upper and lower ends of the drying tank (1). Multiple ventilation holes are arranged at intervals on the sleeve (2), and the outer side of the guide plate (10) is fitted with the inner wall of the sleeve (2) with a clearance. Several heating rods (4) are arranged at intervals along the outer side of the sleeve (2). The top of the heating rods (4) is fixed to the top of the drying tank (1). Several cross-flow fans (6) are arranged at intervals on the outer wall of the drying tank (1). An air extraction pipe (12) is installed on the top of the drying tank (1). One end of the air extraction pipe (12) is placed inside the sleeve (2), and the other end of the air extraction pipe (12) is connected to the inlet of the air pump (13). The air pump (13) is installed on the top of the drying tank (1), and an air outlet pipe (14) is installed on the outlet of the air pump (13). The other end of the air outlet pipe (14) is connected to the annular cover (15). The annular cover (15) is fixed to the bottom of the drying tank (1), and the frontal projection of the annular cover (15) is located between the drying tank (1) and the sleeve (2). Multiple through holes (16) are opened at the bottom of the drying tank (1), and the through holes (16) correspond to the annular cover (15).
2. The recyclable drying device for producing plastic granules according to claim 1, characterized in that: A control cabinet is installed on the outer wall of the drying tank (1). A controller is installed inside the control cabinet. The controller is connected to the crossflow fan (6), the air pump (13), and the heating rod (4) through wires.
3. The recyclable drying device for producing plastic granules according to claim 2, characterized in that: A temperature sensor is installed on the inner wall of the sleeve (2), and the temperature sensor is connected to the controller through a wire.
4. The recyclable drying device for producing plastic granules according to claim 1, characterized in that: The guide plate (10) has multiple air holes arranged at intervals and penetrating the guide plate (10).
5. The recyclable drying device for producing plastic granules according to claim 1, characterized in that: A socket (3) is provided on the top of the drying tank (1). A heating rod (4) is placed inside the drying tank (1) through the socket (3), and the top of the heating rod (4) is threaded to the inner wall of the socket (3). A handle (5) is installed on the top of the heating rod (4).
6. The recyclable drying device for producing plastic granules according to claim 1, characterized in that: A feeding port (11) is provided on one side of the top of the drying tank (1), and a discharge port is provided at the bottom of the drying tank (1). The frontal projection of the discharge port is located on the side of the support shaft (9). A discharge pipe (8) is provided below the discharge port and is fixed to the bottom of the drying tank (1).
7. A recyclable drying apparatus for producing plastic granules according to claim 6, characterized in that: A guide seat (7) is provided at the bottom of the sleeve (2). The guide seat (7) is fixed on the bottom of the drying tank (1). The top surface of the guide seat (7) is inclined. The outer wall of the guide seat (7) is in clearance fit with the inner wall of the sleeve (2). The bottom of the guide seat (7) corresponds to the discharge port.