Hot air drying device for plastic granules

Abstract

The utility model relates to the technical field of plastic processing, and discloses a plastic granule hot air drying device which comprises a drying barrel, a ventilation pipe is fixedly communicated with one side of the peripheral wall of the drying barrel, a discharging plate is hinged to the position, away from the ventilation pipe, of the peripheral wall of the drying barrel, and a feeding plate is hinged to the position, close to the discharging plate, of the peripheral wall of the drying barrel. Handles are fixedly connected to one end of the discharging plate and one end of the feeding plate, the drying device further comprises a stirring assembly and an air supply assembly which are arranged in the drying barrel, the stirring assembly comprises a rotating shaft rotationally connected to one side of the top in the drying barrel, and the rotating shaft and the drying barrel are coaxially arranged; the effect of improving the drying efficiency is achieved, stirring blades rotate to stir plastic particles through mutual cooperation of a rotating shaft, a fixing ring and stirring rods, the plastic particles can be raised conveniently, the plastic particles on the bottom layer are exposed in hot air, and the drying efficiency is improved; the problem that the drying efficiency of plastic particles accumulated in the inner layer is difficult to improve is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to a hot air drying device for plastic pellets. Background Art

[0002] Resin raw materials, modified fillers and other additives are mixed, extruded and granulated to form plastic pellets. Since the plastic strands are cooled by water, the plastic pellets carry water, which must be removed. At present, plastic pellets are dried in electric ovens or electric blast drying ovens. When this method is used, the material is placed in a tray and is in a static state, so it is heated unevenly. The long drying time may even cause the surface layer material to agglomerate, while the inner layer material cannot be fully dried and the heat loss is large.

[0003] After searching, a Chinese patent with publication number CN216953858U discloses a hot air drying device for plastic pellets, including a cylinder, a working screen cylinder is arranged in the cylinder, a rotating rod is arranged at the center of the working screen cylinder, both ends of the rotating rod rotate with the inner wall of the working screen cylinder, one end of one of the rotating rods extends out of the cylinder and is provided with a first gear, a servo motor is arranged on the side wall of the cylinder, a second gear is arranged at the output end of the servo motor, and the first gear and the second gear are meshed.

[0004] The device sends hot air into the hot air cylinder through an external setting, and the hot air is discharged from the air outlet, so that the plastic pellets in the working screen cylinder can be dried. Two hot air cylinders are arranged symmetrically about the working screen cylinder. At the same time, the length of the hot air cylinder is greater than the working screen cylinder, which can ensure that the plastic pellets are heated evenly and the drying efficiency is high.

[0005] However, the device still has the following problem: the hot air moves to the inside of the rotating rod through the cooperation between the hot air blower and the ventilation pipe, and then the hot air contacts the plastic particles inside the working screen drum through the ventilation holes opened on the outer wall of the rotating rod. However, in actual use, the rotation of the working screen drum and the rotating rod can hardly drive the movement of the plastic particles, so that most of the plastic particles inside the working screen drum are still in a relatively static state, making it difficult to improve the drying efficiency of the plastic particles accumulated in the inner layer. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies of the prior art, the utility model provides a hot air drying device for plastic pellets, which solves the above-mentioned problem that it is difficult to improve the drying efficiency of the plastic pellets accumulated in the inner layer.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot air drying device for plastic pellets, comprising a drying barrel, one side of the outer peripheral wall of the drying barrel is fixedly connected to a ventilation pipe, a discharge plate is hingedly connected to the outer peripheral wall of the drying barrel away from the ventilation pipe, a feed plate is hingedly connected to the outer peripheral wall of the drying barrel near the discharge plate, one end of the discharge plate and one end of the feed plate are fixedly connected to a handle, and also includes a stirring component and an air supply component arranged inside the drying barrel;

[0010] The stirring assembly includes a rotating shaft rotatably connected to one side of the top of the drying barrel, and the rotating shaft is coaxially arranged with the drying barrel, a driving motor is fixedly connected to one side of the top of the drying barrel, and the output shaft of the driving motor is fixedly connected to the top of the rotating shaft, one end of the rotating shaft is fixedly connected to a fixing ring, and a plurality of evenly distributed stirring rods are fixedly connected to the outer peripheral wall of the fixing ring, and one end of each stirring rod is fixedly connected to a stirring blade, the outer peripheral wall of the rotating shaft is rotatably connected to a limiting sleeve near the fixing ring, one end of the limiting sleeve is slidably connected to a vibration plate, and the outer peripheral wall of the vibration plate is slidably connected to the inner peripheral wall of the drying barrel, and the outer peripheral wall of the vibration plate is slidably connected to the inner peripheral wall of the drying barrel, and the outer peripheral wall of the rotating shaft is fixedly connected to a bevel gear 1 near the limiting sleeve, and a pair of fixed frames are fixedly connected to the inner bottom of the drying barrel near the bevel gear, one end of each of the fixed frames is rotatably connected to a transmission rod, and one end of the transmission rod is rotatably connected to the inner peripheral wall of the drying barrel, the other end of each of the transmission rods is fixedly connected to a bevel gear 2 meshing with the bevel gear 1, and one end of the outer peripheral wall of each of the transmission rods is fixedly connected to a cam.

[0011] Preferably, the cross section of each stirring blade is arranged in a triangular structure, and the stirring blades are arranged to be inclined toward the upper end of the inner peripheral wall of the drying barrel.

[0012] Preferably, a plurality of guide sleeves are fixedly connected to the inner bottom of the drying barrel near the fixed frame, the inner circumferential wall of each guide sleeve is slidably connected to a guide rod, and the top end of the guide rod is fixedly connected to the bottom of the vibration plate, and a spring is sleeved between the outer circumferential wall of each guide rod and the vibration plate.

[0013] Preferably, the air supply assembly comprises a hot air blower fixedly connected to the other side of the top of the drying barrel, and the output end of the hot air blower is fixedly connected to a connecting pipe.

[0014] Preferably, an annular tube is fixedly connected to the inner top of the drying barrel near the hot air blower, and one end of the annular tube is fixedly connected to one end of the connecting tube, and the bottom end of the annular tube is fixedly connected to a plurality of evenly distributed nozzles.

[0015] Preferably, one end of the ventilation pipe extends between the annular pipe and the top of the drying barrel, and the output end of the nozzle is arranged in a contraction-shaped structure.

[0016] (III) Beneficial effects

[0017] 1. The hot air drying device for plastic pellets, through the mutual cooperation between the rotating shaft, the fixed ring and the stirring rod, makes the stirring blade rotate to stir the plastic pellets, which is convenient for lifting the plastic pellets, so that the bottom plastic pellets are exposed to hot air, and the drying efficiency is improved. At the same time, through the mutual cooperation between the bevel gear 1 and the bevel gear 2, a pair of cams are synchronously cyclically pressed against the bottom of the vibration plate, so that the accumulated plastic pellets on the top of the vibration plate are vibrated and turned out, which effectively improves the drying efficiency of the device.

[0018] 2. The hot air drying device for plastic pellets is practical, efficient and ingeniously designed. The stability of the reciprocating vibration of the vibration plate is improved through the mutual cooperation between the guide rod, the guide sleeve and the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0020] Figure 2 This is a schematic diagram of a half-cut three-dimensional structure of some components of the utility model;

[0021] Figure 3 This is a schematic diagram of a half-section three-dimensional structure of a part of the stirring assembly of the utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1. drying barrel; 2. ventilation pipe; 3. discharge plate; 301. feed plate; 4. handle; 5. hot air blower; 6. connecting pipe; 7. driving motor; 8. rotating shaft; 9. fixing ring; 10. stirring rod; 11. stirring blade; 12. limiting sleeve; 13. vibration plate; 14. guide sleeve; 15. guide rod; 16. spring; 17. bevel gear 1; 18. fixing frame; 19. transmission rod; 20. bevel gear 2; 21. cam; 22. annular tube; 23. nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Figure 1As shown, a hot air drying device for plastic pellets includes a drying barrel 1, which is made of aluminum alloy material to improve the overall structural strength of the device. A ventilation pipe 2 is fixedly connected to one side of the outer peripheral wall of the drying barrel 1, wherein the ventilation pipe 2 serves to facilitate the discharge of wet hot water vapor, a discharge plate 3 is hingedly connected to the outer peripheral wall of the drying barrel 1 away from the ventilation pipe 2, and a feed plate 301 is hingedly connected to the outer peripheral wall of the drying barrel 1 near the discharge plate 3, one end of the discharge plate 3 and one end of the feed plate 301 are fixedly connected with a handle 4, wherein the handle 4 serves to facilitate pulling out the discharge plate 3 and the feed plate 301, and also includes a stirring component and an air supply component arranged inside the drying barrel 1.

[0026] like Figure 2-Figure 4 As shown, in a certain embodiment, in order to improve the efficiency of the device in drying plastic particles, the stirring assembly includes a rotating shaft 8 rotatably connected to one side of the top of the drying barrel 1 through a bearing, and the rotating shaft 8 is coaxially arranged with the drying barrel 1, a driving motor 7 is fixedly connected to one side of the top of the drying barrel 1, and the output shaft of the driving motor 7 is fixedly connected to the top of the rotating shaft 8, wherein the driving motor 7 plays a role in driving the rotating shaft 8 to rotate, one end of the rotating shaft 8 is fixedly connected to a fixing ring 9 by bolts, and a plurality of evenly distributed stirring rods 10 are fixedly connected to the outer peripheral wall of the fixing ring 9, and one end of each of the stirring rods 10 is fixedly connected to a stirring blade 11, and the cross-section of each of the stirring blades 11 is arranged in a triangular structure, and the stirring blades 11 are inclined toward the upper end of the inner peripheral wall of the drying barrel 1, and the stirring blades 11 are driven to rotate and stir the plastic particles through the mutual cooperation between the rotating shaft 8, the fixing ring 9 and the stirring rod 10, so as to increase the contact area between the plastic particles and the hot air and improve the drying efficiency of the plastic particles, and the outer peripheral wall of the rotating shaft 8 is rotatably connected to a limiting sleeve 12 near the fixing ring 9, and the limiting sleeve One end of the rotating shaft 8 is slidably connected to a vibration plate 13, and the outer peripheral wall of the vibration plate 13 is slidably connected to the inner peripheral wall of the drying barrel 1, wherein the limiting sleeve 12 serves to facilitate the vertical reciprocating motion of the vibration plate 13, the outer peripheral wall of the rotating shaft 8 is fixedly connected to a bevel gear 17 near the limiting sleeve 12, and the inner bottom of the drying barrel 1 is fixedly connected to a pair of fixing frames 18 near the bevel gear 17, one end of each fixing frame 18 is rotatably connected to a transmission rod 19, and one end of the transmission rod 19 is rotatably connected to the inner peripheral wall of the drying barrel 1, and the inner peripheral wall of the drying barrel 1 is rotatably connected to the inner peripheral wall of the drying barrel 1. The middle fixed frame 18 plays the role of supporting and limiting the transmission rod 19. The other end of each transmission rod 19 is fixedly connected to a bevel gear 20 meshing with the bevel gear 17. One end of the outer peripheral wall of each transmission rod 19 is fixedly connected to a cam 21. Through the mutual cooperation between the bevel gear 17 and the bevel gear 20, a pair of cams 21 can synchronously and cyclically contact the bottom of the vibration plate 13, so that the vibration plate 13 vibrates back and forth in the vertical direction, so that the plastic particles above the vibration plate 13 vibrate continuously, avoiding the accumulation of plastic particles in the bottom layer and making it difficult to contact with hot air.

[0027] like Figure 2 and Figure 3 As shown, in a certain embodiment, in order to improve the vibration stability of the vibration plate 13, a plurality of guide sleeves 14 are fixedly connected to the inner bottom of the drying barrel 1 near the fixed frame 18, and the inner peripheral wall of each guide sleeve 14 is slidably connected to a guide rod 15, and the top of the guide rod 15 is fixedly connected to the bottom of the vibration plate 13, and a spring 16 is sleeved between the outer peripheral wall of each guide rod 15 and the vibration plate 13. Through the mutual cooperation between the guide rod 15, the guide sleeve 14 and the spring 16, the stability of the reciprocating vibration of the vibration plate 13 is improved.

[0028] like Figure 1 and Figure 2 As shown, in a certain embodiment, in order to improve the stability of the device in drying plastic particles, the air supply component includes a hot air blower 5 fixedly connected to the other side of the top of the drying barrel 1, and the output end of the hot air blower 5 is fixedly connected to a connecting pipe 6. An annular tube 22 is fixedly connected to the inner top of the drying barrel 1 near the hot air blower 5, and one end of the annular tube 22 is fixedly connected to one end of the connecting pipe 6, and the bottom end of the annular tube 22 is fixedly connected to a plurality of evenly distributed nozzles 23. Through the mutual cooperation between the hot air blower 5, the connecting pipe 6 and the annular tube 22, the nozzle 23 is convenient to spray hot air toward the plastic particles. One end of the ventilation pipe 2 extends between the annular pipe 22 and the inner top of the drying barrel 1, and the output end of the nozzle 23 is arranged in a contracted structure to prevent the plastic particles from splashing and clogging the ports of the ventilation pipe 2 or the nozzle 23 during stirring.

[0029] Working principle: When in use, first pull out the feed plate 301 through the handle 4, then place the plastic pellets in the drying barrel 1, then close the feed plate 301, start the hot air blower 5, and through the cooperation between the hot air blower 5, the connecting pipe 6 and the annular pipe 22, the nozzle 23 sprays hot air toward the plastic pellets, and then start the drive motor 7, and the drive motor 7 drives the rotating shaft 8, and through the cooperation between the rotating shaft 8, the fixing ring 9 and the stirring rod 10, the stirring blade 11 rotates to stir the plastic pellets. The tilted setting of the stirring blade 11 facilitates the lifting of the plastic pellets during the rotation of the stirring blade 11, so that the bottom plastic pellets are exposed to the In the hot air, the drying efficiency is improved. At the same time, through the mutual cooperation between the bevel gear 17 and the bevel gear 20, a pair of transmission rods 19 drive a pair of cams 21 to rotate synchronously, and then the pair of cams 21 synchronously and cyclically resist the bottom of the vibration plate 13, so that the vibration plate 13 vibrates back and forth along the direction of the limiting sleeve 12, so that the plastic particles accumulated on the top of the vibration plate 13 are vibrated and turned out, further improving the uniformity of contact between each part of the plastic particles and the hot air, effectively improving the drying efficiency of the device, and then through the mutual cooperation between the guide rod 15, the guide sleeve 14 and the spring 16, the stability of the reciprocating vibration of the vibration plate 13 is improved.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air drying device for plastic pellets, comprising a drying barrel (1), a ventilation pipe (2) is fixedly connected to one side of the outer peripheral wall of the drying barrel (1), a discharge plate (3) is hingedly connected to the outer peripheral wall of the drying barrel (1) away from the ventilation pipe (2), a feed plate (301) is hingedly connected to the outer peripheral wall of the drying barrel (1) near the discharge plate (3), one end of the discharge plate (3) and one end of the feed plate (301) are both fixedly connected with a handle (4), characterized in that: It also includes a stirring component and an air supply component arranged inside the drying barrel (1); The stirring assembly comprises a rotating shaft (8) rotatably connected to one side of the top of the drying barrel (1), and the rotating shaft (8) is coaxially arranged with the drying barrel (1); a driving motor (7) is fixedly connected to one side of the top of the drying barrel (1), and the output shaft of the driving motor (7) is fixedly connected to the top of the rotating shaft (8); one end of the rotating shaft (8) is fixedly connected to a fixing ring (9); a plurality of evenly distributed stirring rods (10) are fixedly connected to the outer peripheral wall of the fixing ring (9); one end of each stirring rod (10) is fixedly connected to a stirring blade (11); the outer peripheral wall of the rotating shaft (8) is rotatably connected to a limiting sleeve (12) near the fixing ring (9); one end of the limiting sleeve (12) is slidably connected to A vibration plate (13) is provided, and the outer peripheral wall of the vibration plate (13) is slidably connected to the inner peripheral wall of the drying barrel (1); the outer peripheral wall of the rotating shaft (8) is fixedly connected to a bevel gear 1 (17) near the limiting sleeve (12); the inner bottom of the drying barrel (1) is fixedly connected to a pair of fixing frames (18) near the bevel gear 1 (17); one end of each fixing frame (18) is rotatably connected to a transmission rod (19); one end of the transmission rod (19) is rotatably connected to the inner peripheral wall of the drying barrel (1); the other end of each transmission rod (19) is fixedly connected to a bevel gear 2 (20) meshing with the bevel gear 1 (17); and one end of the outer peripheral wall of each transmission rod (19) is fixedly connected to a cam (21).

2. A hot air drying device for plastic pellets according to claim 1, characterized in that: The cross section of each stirring blade (11) is arranged in a triangular structure, and the stirring blades (11) are arranged to be inclined toward the upper end of the inner peripheral wall of the drying barrel (1).

3. A hot air drying device for plastic pellets according to claim 1, characterized in that: A plurality of guide sleeves (14) are fixedly connected to the inner bottom of the drying barrel (1) near the fixing frame (18); the inner peripheral wall of each guide sleeve (14) is slidably connected to a guide rod (15); the top end of the guide rod (15) is fixedly connected to the bottom of the vibration plate (13); and a spring (16) is sleeved between the outer peripheral wall of each guide rod (15) and the vibration plate (13).

4. A hot air drying device for plastic pellets according to claim 1, characterized in that: The air supply assembly comprises a hot air blower (5) fixedly connected to the other side of the top of the drying barrel (1), and the output end of the hot air blower (5) is fixedly connected to a connecting pipe (6).

5. A hot air drying device for plastic pellets according to claim 4, characterized in that: An annular tube (22) is fixedly connected to the inner top of the drying barrel (1) near the hot air blower (5), and one end of the annular tube (22) is fixedly connected to one end of the connecting tube (6), and the bottom end of the annular tube (22) is fixedly connected to a plurality of evenly distributed nozzles (23).

6. A hot air drying device for plastic pellets according to claim 5, characterized in that: One end of the ventilation pipe (2) extends between the annular pipe (22) and the top of the drying barrel (1), and the output end of the nozzle (23) is arranged in a contraction-shaped structure.

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