Waste plastic particle dewatering and drying device
By designing a waste plastic particle dehydration and drying device that combines spin drying and hot air drying, the problem of poor dehydration effect in the existing technology is solved, efficient plastic particle drying is achieved, and production efficiency is improved.
Patent Information
- Application Number
- CN202422434224.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-09
AI Technical Summary
In the prior art, the dehydration and drying effect of waste plastic particles is poor, resulting in the need for secondary dehydration operations, which affects production efficiency.
A dehydration and drying device for waste plastic particles is designed, which combines a spin drying unit and an air drying unit. Spin drying and hot air drying are carried out simultaneously, using centrifugal force to remove water stains and using hot air to remove water vapor, thereby further drying the plastic particles.
It achieves efficient drying of plastic particles, avoids secondary dehydration, and improves production efficiency.
Smart Images
Figure CN223354669U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste plastic barrel resource processing, in particular to a waste plastic particle dehydration and drying device. Background Art
[0002] To conserve resources and improve the utilization rate of used plastic barrels, recycled plastic barrels are typically crushed and processed into plastic pellets. The recycling process includes crushing, cleaning, rinsing, and drying. After rinsing, the plastic pellets retain a significant amount of moisture, requiring surface drying before collection or direct processing. Dehydration is typically used for drying, but this method is ineffective. In some applications requiring a higher degree of dryness, a secondary dehydration operation may be required, impacting production efficiency. Utility Model Content
[0003] In view of the above-mentioned problems, the purpose of the present invention is to design a dehydration and drying device for waste plastic particles to improve the dehydration and drying effect of the plastic particles.
[0004] The purpose of the utility model is achieved through the following technical solutions:
[0005] A dehydration and drying device for waste plastic particles is designed, comprising a dehydration mechanism and a drying mechanism connected to the dehydration mechanism; the dehydration mechanism comprises a horizontally arranged dehydration barrel, a feed barrel provided at the end of the dehydration barrel and connected to the dehydration barrel, a drying unit for drying water stains, and a drying unit for hot air drying; the feed barrel is provided with a feed channel, and the dehydration barrel is provided with a discharge channel at one end away from the feed barrel; the drying mechanism comprises a drying barrel connected to the discharge channel, a hot air unit provided on the side wall of the drying barrel and connected to the drying barrel, a flap discharge unit provided at the bottom of the drying barrel, and a stirring unit for stirring the plastic particles in the drying barrel.
[0006] This waste plastic pellet dehydration and drying device can simultaneously perform spin drying and air drying of the plastic pellets. Plastic pellets are fed into the feed channel and, driven by the spin-drying unit, rotate at high speed toward the discharge channel. During this process, water stains are removed from the plastic pellets by centrifugal force and flow out of the water outlet, completing the spin-drying operation. During the spin-drying process, the air-drying unit simultaneously generates hot air that flows into the dehydration barrel, removing water vapor from the barrel and further drying the plastic pellets. The dehydrated plastic pellets are then ejected from the discharge channel into the drying barrel, where a hot air unit connected to the barrel continuously blows hot air into the barrel. A stirring unit stirs the plastic pellets within the barrel, ensuring full contact with the hot air, further drying them. When the set drying time is reached, the flap discharge unit controls the opening of the drying barrel outlet to release the dried plastic pellets. This design effectively improves the dryness of the plastic pellets to meet process requirements and avoids the impact of incomplete dehydration and secondary dehydration that can affect production efficiency.
[0007] Furthermore, the drying unit includes a screen installed on the inner wall of the dehydration barrel, a horizontally arranged rotating shaft passing through the feed barrel and the dehydration barrel, and a rotating shaft driving unit driving the rotating shaft to rotate, and spiral blades are provided on the outer periphery of the rotating shaft.
[0008] Driven by the high-speed rotating spiral blades, the plastic particles rotate at high speed and move toward the discharge channel. Under the filtration of the screen, the water stains are thrown out, flow out from the water outlet of the dehydration barrel and are collected and processed.
[0009] Furthermore, the air drying unit includes an air supply blade arranged on the periphery of the rotating shaft, and a heating element located beside the air supply blade, and the air supply blade is located on a side of the feed channel away from the dehydration barrel.
[0010] The heating element generates heat when it is energized, and the air supply blades rotate at high speed to drive the air flow, thereby generating hot air that is blown to the dehydration barrel. The plastic particles are further dried by hot air while being spun and dehydrated. By setting the air supply blades to rotate with the rotating shaft, there is no need to set up an additional wind source power mechanism, saving electricity.
[0011] Furthermore, an air inlet is provided at the end of the feed barrel, a first air outlet is provided at the end of the dehydration barrel close to the discharge channel, and the heating element is located between the air inlet and the air supply blades.
[0012] The air inlet, the first air outlet and the water outlet form a hot air duct in the dehydration barrel. Air enters from the air inlet, is heated by the heating element and then blown toward the dehydration barrel. During the flow of hot air, water vapor is taken away from the first air outlet and the water outlet.
[0013] Furthermore, the drying barrel includes a stirring chamber connected to the discharge channel, and a discharge chamber away from the discharge channel and connected to the stirring chamber, and the diameter of the stirring chamber is smaller than the diameter of the discharge chamber.
[0014] The drying barrel is arranged vertically and is divided into a stirring chamber and a discharge chamber. The upper end of the stirring chamber is connected to the discharge channel of the dehydration barrel from the side. A flap discharge unit is provided in the discharge chamber to control the closure of the bottom of the stirring chamber.
[0015] Furthermore, the hot air unit includes a hot air plate attached to the side wall of the stirring chamber, and a hot air blower connected to the hot air plate, the hot air plate has an air duct inside, and a plurality of air nozzles are provided on the hot air plate, and the air nozzles are connected to the hot air blower through the air duct; the side wall of the stirring chamber is provided with a through hole for the air nozzles to pass through.
[0016] The hot air plate is designed in an arc shape and fits tightly with the outer wall of the stirring chamber. The air nozzle installed on the side wall of the hot air plate extends into the stirring chamber through the through hole on the side wall of the stirring chamber. The hot air blower is used to continuously blow hot air into the stirring chamber to dry the plastic particles.
[0017] Furthermore, the side wall of the stirring chamber is also provided with a second air outlet.
[0018] A second air outlet is provided at a side wall of the stirring chamber opposite to the hot air plate to quickly take away the water vapor in the stirring chamber.
[0019] Furthermore, the stirring unit includes a stirring shaft passing through the stirring chamber, and a stirring driving member driving the stirring shaft to rotate, and the stirring driving member is located at the end of the stirring chamber away from the discharge chamber.
[0020] The stirring drive is arranged at the top of the discharge chamber and is connected to the stirring shaft through a reducer, driving the stirring shaft to rotate in the stirring chamber so that the plastic particles in the stirring chamber can be evenly contacted with the hot air ejected from the air nozzle, thereby improving the drying effect of the plastic particles.
[0021] Furthermore, the stirring shaft is provided with stirring blades, which are distributed in an axial array and stop at the intersection of the stirring cavity and the discharge channel.
[0022] The stirring blades are arranged in an alternating array on the stirring shaft to ensure that the plastic particles can be evenly stirred and turned in the stirring chamber, so that the plastic particles can effectively contact the hot air; at the same time, the stirring blades stop at the intersection of the stirring chamber and the discharge channel to avoid affecting the plastic particles in the discharge channel from entering the stirring chamber.
[0023] Furthermore, the flap discharging unit includes a flap located in the discharge chamber, and a flap driving component that drives the flap to rotate, the diameter of the flap is larger than the diameter of the stirring chamber and smaller than the diameter of the discharge chamber, and the flap driving component is arranged on the side wall of the discharge chamber.
[0024] When the stirring chamber is filled with material, the flap fits against the bottom of the stirring chamber to close the stirring chamber. When the plastic particles in the stirring chamber reach the set drying time, the flap drive drives the flap to rotate ninety degrees to release the plastic particles in the stirring chamber, and then the flap drive drives the flap to rotate again to close the stirring chamber.
[0025] Compared with the prior art, the beneficial effects of the present invention are:
[0026] This waste plastic pellet dehydration and drying device can simultaneously perform spin drying and air drying of the plastic pellets. Plastic pellets are fed into the feed channel and, driven by the spin-drying unit, rotate at high speed toward the discharge channel. During this process, water stains are removed from the plastic pellets by centrifugal force and flow out of the water outlet, completing the spin-drying operation. During the spin-drying process, the air-drying unit simultaneously generates hot air that flows into the dehydration barrel, removing water vapor from the barrel and further drying the plastic pellets. The dehydrated plastic pellets are then ejected from the discharge channel into the drying barrel, where a hot air unit connected to the barrel continuously blows hot air into the barrel. A stirring unit stirs the plastic pellets within the barrel, ensuring full contact with the hot air, further drying them. When the set drying time is reached, the flap discharge unit controls the opening of the drying barrel outlet to release the dried plastic pellets. This design effectively improves the dryness of the plastic pellets to meet process requirements and avoids the impact of incomplete dehydration and secondary dehydration that can affect production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a structural diagram of a waste plastic particle dehydration and drying device according to one embodiment of the present utility model.
[0028] Figure 2 This is a structural diagram of the interior of the dehydration mechanism of one embodiment of the present utility model.
[0029] Figure 3 This is a structural diagram of a rotating shaft according to an embodiment of the present invention.
[0030] Figure 4 This is a structural diagram of a drying mechanism according to an embodiment of the present invention.
[0031] Figure 5 This is a structural diagram of the interior of the drying mechanism of an embodiment of the present utility model.
[0032] Illustrations: 1. Dehydration mechanism; 2. Drying mechanism; 11. Dehydration barrel; 12. Spin-drying unit; 13. Feed barrel; 14. Air-drying unit; 21. Drying barrel; 22. Hot air unit; 23. Flip-type discharging unit; 24. Stirring unit; 111. Discharging channel; 121. Screen; 122. Rotating shaft; 123. Rotating shaft driving unit; 124. Spiral blade; 131. Feeding channel; 132. Air inlet; 141. Air supply blade; 142. Heating element; 211. Stirring chamber; 212. Discharging chamber; 213. Second air outlet; 221. Hot air plate; 222. Hot air blower; 223. Air nozzle; 231. Flip; 232. Flip-type driving element; 241. Stirring shaft; 242. Stirring driving element; 243. Stirring blade. DETAILED DESCRIPTION
[0033] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.
[0034] like Figures 1 to 5 As shown, this embodiment provides a waste plastic particle dehydration and drying device, comprising a dehydration mechanism 1 and a drying mechanism 2 connected to the dehydration mechanism 1. The dehydration mechanism 1 comprises a horizontally arranged dehydration barrel 11, a drying unit 12 for drying water stains, a feed barrel 13 disposed at the end of the dehydration barrel 11 and connected to the dehydration barrel 11, and a drying unit 14 for hot air drying. The drying unit 12 comprises a screen 121 mounted on the inner wall of the dehydration barrel 11, a horizontally arranged rotating shaft 122 extending through the feed barrel 13 and the dehydration barrel 11, and a rotating shaft driving unit 123 for driving the rotating shaft 122 to rotate. The rotating shaft 122 has spiral blades 124 disposed on its outer circumference. The ends of the rotating shaft 122 are mounted at the ends of the feed barrel 13 and the dehydration barrel 11 via sealed bearings. The rotating shaft driving unit 123 is powered by a drive motor and a belt. The drive motor is disposed beside the feed barrel 13, and the output shaft of the drive motor is connected to the end of the rotating shaft 122 via a belt. The air drying unit 14 includes an air supply blade 141 arranged on the periphery of the rotating shaft 122, and a heating element 142 located next to the air supply blade 141. The feed barrel 13 is provided with a feed channel, and the air supply blade 141 is located on the side of the feed channel 131 away from the dehydration barrel 11. The dehydration barrel 11 is provided with a discharge channel 111 at the end away from the feed barrel 13; the drying mechanism 2 includes a drying barrel 21 connected to the discharge channel 111, a hot air unit 22 provided on the side wall of the drying barrel 21 and connected to the drying barrel 21, a flap discharge unit 23 provided at the bottom of the drying barrel 21, and a stirring unit 24 for stirring the plastic particles in the drying barrel 21.
[0035] The waste plastic granule dehydration and drying device of this embodiment can realize the simultaneous drying and dehydration of plastic granules by air drying. Plastic granules are fed into the feed channel 131, the shaft drive unit 123 drives the shaft 122 to rotate, and the spiral blades 124 rotate at high speed and drive the plastic granules to move toward the discharge channel 111. During this process, water stains are thrown out of the screen 121 under the action of centrifugal force and flow out from the water outlet, completing the drying operation of the plastic granules. An air supply blade 141 is provided at the end of the shaft 122 near the feed barrel 13, and a heating element 142 is provided behind the air supply blade 141. Therefore, during the high-speed rotation of the shaft 122, hot air is simultaneously generated to flow into the dehydration barrel 11, and the plastic granules are further dried by hot air while being dried and dehydrated. By setting the air supply blade 141 to rotate with the shaft 122, there is no need to set up an additional wind source power mechanism, saving electricity. The dehydrated plastic pellets are ejected from the discharge channel 111 and enter the drying barrel 21. The stirring unit 24 stirs the plastic pellets that fall into the drying barrel 21. The hot air unit 22, which is connected to the drying barrel 21, continuously blows hot air into the drying barrel 21, further drying the plastic pellets. When the set drying time is reached, the flap discharge unit 23 controls the discharge port of the drying barrel 21 to open, releasing the dried plastic pellets. This design effectively improves the dryness of the plastic pellets to meet process requirements and improves production efficiency.
[0036] like Figure 1 and Figure 2 As shown, an air inlet 132 is provided at the end of the feed barrel 13, a first air outlet is provided at the end of the dehydration barrel 11 near the discharge channel 111, and a heating element 142 is located between the air inlet 132 and the air supply blades 141. The air inlet 132, the first air outlet, and the water outlet form a hot air duct within the dehydration barrel 11. Air enters through the air inlet 132, is heated by the heating element 142, and then blows toward the dehydration barrel 11. During the flow of the hot air, water vapor is carried away from the first air outlet and the water outlet.
[0037] like Figure 4 and Figure 5 As shown, the drying barrel 21 includes a stirring chamber 211 connected to the discharge channel 111, and a discharge chamber 212, which is separated from the discharge channel 111 and connected to the stirring chamber 211. The diameter of the stirring chamber 211 is smaller than the diameter of the discharge chamber 212. The drying barrel 21 is vertically arranged and divided into the stirring chamber 211 and the discharge chamber 212. The upper end of the stirring chamber 211 is connected to the discharge channel 111 of the dehydration barrel 11 from the side. The discharge chamber 212 is provided with a flap discharge unit 23 that controls the closure of the bottom of the stirring chamber 211.
[0038] like Figure 4 and Figure 5As shown, the hot air unit 22 includes a hot air plate 221 attached to the side wall of the stirring chamber 211, and a hot air blower 222 connected to the hot air plate 221. The hot air plate 221 has an internal air duct and is equipped with a plurality of air nozzles 223, which are connected to the hot air blower 222 through the air duct. The side wall of the stirring chamber 211 is provided with through holes for the air nozzles 223 to pass through. The hot air plate 221 has an arc-shaped design and fits tightly against the outer wall of the stirring chamber 211. The air nozzles 223 installed on the side wall of the hot air plate 221 extend into the stirring chamber 211 through the through holes in the side wall of the stirring chamber 211. The hot air blower 222 continuously blows hot air into the stirring chamber 211, thereby drying the plastic particles. A second air outlet is provided on the side wall of the stirring chamber 211 opposite the hot air plate 221 to quickly remove water vapor from the stirring chamber 211.
[0039] like Figure 4 and Figure 5 As shown, the stirring unit 24 includes a stirring shaft 241 that passes through the stirring chamber 211, and a stirring drive 242 that drives the stirring shaft 241 to rotate. The stirring drive 242 is located at the end of the stirring chamber 211 away from the discharge chamber 212. The stirring shaft 241 is provided with stirring blades 243, which are distributed in an array along the axial direction and terminate at the intersection of the stirring chamber 211 and the discharge channel 111. The stirring drive member 242 adopts a driving motor, and the output shaft of the driving motor is connected to the stirring shaft 241 through a reducer, driving the stirring shaft 241 to rotate in the stirring chamber 211. The stirring blades 243 are arranged in an alternating array on the stirring shaft 241 to ensure that the plastic particles can be evenly stirred and turned in the stirring chamber 211, so that the plastic particles in the stirring chamber 211 can be evenly contacted with the hot air ejected from the air nozzle 223, thereby improving the drying efficiency of the plastic particles; at the same time, the stirring blades 243 stop at the intersection of the stirring chamber 211 and the discharge channel 111, so as to avoid affecting the plastic particles in the discharge channel 111 from entering the stirring chamber 211.
[0040] like Figure 4 and Figure 5 As shown, the flap discharge unit 23 includes a flap 231 located in the discharge chamber 212, and a flap drive 232 that drives the flap 231 to rotate. The diameter of the flap 231 is larger than the diameter of the stirring chamber 211 and smaller than the diameter of the discharge chamber 212. The flap drive 232 is located on the side wall of the discharge chamber 212. When the stirring chamber 211 is filled with material, the flap 231 is in contact with the bottom of the stirring chamber 211 to achieve a closed state of the stirring chamber 211. When the plastic particles in the stirring chamber 211 reach the set drying time, the flap drive 232 drives the flap 231 to rotate 90 degrees to release the plastic particles in the stirring chamber 211. Then, the flap drive 232 drives the flap 231 to rotate again to close the stirring chamber 211.
[0041] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0042] Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Therefore, the term "first," "second," and the like may explicitly or implicitly include one or more of the features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dehydration and drying device for waste plastic particles, characterized in that: It includes a dehydration mechanism and a drying mechanism connected to the dehydration mechanism; the dehydration mechanism includes a horizontally arranged dehydration barrel, a feed barrel provided at the end of the dehydration barrel and connected to the dehydration barrel, a drying unit for drying water stains, and a drying unit for hot air drying; the feed barrel is provided with a feed channel, and the dehydration barrel is provided with a discharge channel at one end away from the feed barrel; the drying mechanism includes a drying barrel connected to the discharge channel, a hot air unit provided on the side wall of the drying barrel and connected to the drying barrel, a flap discharge unit provided at the bottom of the drying barrel, and a stirring unit for stirring the plastic particles in the drying barrel.
2. The waste plastic particle dehydration and drying device according to claim 1, characterized in that: The drying unit includes a screen installed on the inner wall of the dehydration barrel, a horizontally arranged rotating shaft passing through the feed barrel and the dehydration barrel, and a rotating shaft driving unit for driving the rotating shaft to rotate. The outer periphery of the rotating shaft is provided with spiral blades.
3. The waste plastic particle dehydration and drying device according to claim 2, characterized in that: The air drying unit includes an air supply blade arranged on the periphery of the rotating shaft and a heating element located beside the air supply blade. The air supply blade is located on a side of the feeding channel away from the dehydration barrel.
4. The waste plastic particle dehydration and drying device according to claim 3, characterized in that: An air inlet is provided at the end of the feed barrel, a first air outlet is provided at the end of the dehydration barrel close to the discharge channel, and the heating element is located between the air inlet and the air supply blades.
5. The waste plastic particle dehydration and drying device according to claim 1, characterized in that: The drying barrel includes a stirring chamber connected to the discharge channel, and a discharge chamber away from the discharge channel and connected to the stirring chamber. The diameter of the stirring chamber is smaller than the diameter of the discharge chamber.
6. The waste plastic particle dehydration and drying device according to claim 5, characterized in that: The hot air unit includes a hot air plate attached to the side wall of the stirring chamber, and a hot air blower connected to the hot air plate. The hot air plate has an air duct inside, and a plurality of air nozzles are provided on the hot air plate. The air nozzles are connected to the hot air blower through the air duct; the side wall of the stirring chamber is provided with a through hole for the air nozzles to pass through.
7. The waste plastic particle dehydration and drying device according to claim 6, characterized in that: The side wall of the stirring chamber is also provided with a second air outlet.
8. The waste plastic particle dehydration and drying device according to claim 5, characterized in that: The stirring unit includes a stirring shaft passing through the stirring chamber and a stirring driving member driving the stirring shaft to rotate. The stirring driving member is located at the end of the stirring chamber away from the discharge chamber.
9. The waste plastic particle dehydration and drying device according to claim 8, characterized in that: The stirring shaft is provided with stirring blades, which are distributed in an axial array and stop at the intersection of the stirring cavity and the discharge channel.
10. The waste plastic particle dehydration and drying device according to claim 5, characterized in that: The flap discharging unit includes a flap located in the discharge chamber and a flap driving member that drives the flap to rotate. The diameter of the flap is larger than the diameter of the stirring chamber and smaller than the diameter of the discharge chamber. The flap driving member is arranged on the side wall of the discharge chamber.