Plastic particle extrusion drying machine

Abstract

The utility model relates to the technical field of drying machines, in particular to a plastic particle extrusion drying machine which comprises a drying cylinder, an electric heating rod is embedded in the inner wall of the drying cylinder, a first rotating rod rotationally penetrates through the middle of the interior of the drying cylinder, and a motor is installed at the top end of the first rotating rod. A driving gear is installed on the surface of the top end of the first rotating rod, and spiral blades are fixed to the surface of the first rotating rod. The plastic particle drying device has the beneficial effects that plastic particles can be fully rotated and stirred, the clustered plastic particles are dispersed, and the stacked plastic particles are turned up and down to be dried, so that the plastic particles can be quickly and fully dried; according to the plastic particle drying device, chippings generated in the plastic particle drying process can be separated out of the discharging barrel, the chippings fall off from the chipping falling holes, the quality of plastic particles is improved, the plastic particles in the discharging barrel can be heated and dried again through the electric heating ring, and the dryness of the plastic particles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a plastic pellet extrusion dryer. Background Art

[0002] Plastic products are common in daily life and industry. They are mainly made by adding plastic pellets of corresponding ingredients into an injection molding machine, melting them and then extruding them. In order to verify the performance of the plastic pellets produced, companies usually need to make samples through injection molding machines for testing. The water content of plastic pellets must be reduced during the injection molding process, so the plastic pellets usually need to be dried before injection molding.

[0003] Plastic pellet extruder is a type of plastic processing machinery. It relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the materials, and then form them through a die. The plastic pellets need to be cooled and dried after extrusion.

[0004] For example, the prior art Chinese patent publication number "CN218365866U" provides a plastic pellet extrusion dryer, including a body, a discharge port and a feed port. A drying component is arranged inside the body, and the drying component includes two groups of support plates, and the two groups of support plates are connected to the inner wall of the body. The top of the support plate is connected to a breathable grid through a spring, and the inner wall of the body is rotatably connected to two transmission rods. The outsides of the two transmission rods are both sleeved with cams, one end of the two cams passes through the body and is sleeved with pulleys, a driving motor is installed at one end of the body, and the output end of the driving motor is connected to one of the pulleys, the inner bottom wall of the body is connected to a heating bin, the inner wall of the heating bin is connected to a plurality of electric heating tubes, and the inner wall of the body is symmetrically connected to a plurality of air outlets.

[0005] The device increases the contact area between plastic particles and hot air, improves the drying effect, and avoids the plastic particles from sticking to each other. At the same time, it realizes the recovery and reuse of heat and reduces the overall energy consumption of the equipment.

[0006] In the existing plastic pellet extrusion dryer, the plastic pellets are easily stuck together and have a large volume. The plastic pellets wrapped inside cannot be stirred and dispersed, which affects the drying of the plastic pellets. Moreover, the plastic pellets accumulate inside the drying cylinder and cannot be flipped up and down to mix, resulting in insufficient drying of the plastic pellets. In addition, during the mixing, stirring and drying process of the plastic pellets, debris will appear and cannot be separated from the intact plastic pellets, reducing the quality of the plastic pellets. Utility Model Content

[0007] The utility model aims to solve the problems in the prior art that plastic pellets are easily clumped together and have a large volume, the plastic pellets wrapped inside cannot be stirred and dispersed, which affects the drying of the plastic pellets, and the plastic pellets are accumulated inside the drying cylinder and cannot be turned up and down for mixing. A plastic pellet extrusion dryer is proposed.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A plastic pellet extrusion dryer is designed, including a drying cylinder, the inner wall of the drying cylinder is inlaid with an electric heating rod, a first rotating rod is rotated and passed through the middle of the interior of the drying cylinder, a motor is installed at the top of the first rotating rod, a driving gear is installed on the top surface of the first rotating rod, a spiral blade is fixed on the surface of the first rotating rod, a second rotating rod is rotatably installed inside the drying cylinder and at a position around the first rotating rod, a driven gear is installed on the top of the surface of the second rotating rod, a stirring blade is fixed on the surface of the second rotating rod, a blanking hole is opened at the bottom end of the drying cylinder, a rotating hole is opened in the middle of the bottom end of the drying cylinder, the first rotating rod rotates through the rotating hole, a blanking cylinder is fixed at the bottom end of the drying cylinder, a reinforcing rod is fixed on the surface of the first rotating rod and the surface located inside the blanking cylinder, a rotating rod is fixed on the outer end of the reinforcing rod, and a scraping strip is connected to the outer side of the rotating rod and at a position contacting with the inner wall of the blanking cylinder.

[0010] Furthermore, an exhaust pipe is fixed to the top of the drying cylinder, a feed pipe is connected to the top of the side of the drying cylinder, supporting legs are fixed to the edge of the blanking cylinder, a discharge pipe is installed in the middle of the bottom end of the blanking cylinder, slag dropping holes are opened on the surface of the blanking cylinder, and an electric heating ring is installed on the outer side of the blanking cylinder.

[0011] Furthermore, the drying cylinder is a cylindrical structure, the driving gear and the driven gear are meshed and transmission-connected, and are both horizontally arranged near the inner top of the drying cylinder.

[0012] Furthermore, the electric heating rod is a long strip structure and is vertically arranged. The first rotating rod and the second rotating rod are both rotatably mounted and connected to the drying cylinder and are vertically arranged. The stirring blade and the spiral blade are spaced apart.

[0013] Furthermore, the drop holes are evenly distributed at the bottom end of the drying cylinder, and the drop cylinder is a conical cylinder structure.

[0014] Furthermore, the reinforcing rod is horizontally arranged, the rotating rod is obliquely arranged on the inner side of the blanking barrel, the scraping strip is obliquely arranged and in scraping contact with the inner surface of the blanking barrel, and is made of rubber material.

[0015] Furthermore, the slag dropping holes are evenly distributed on the surface of the blanking barrel, and have a diameter smaller than the blanking holes. The electric heating ring is a circular ring structure, and is spaced apart from the slag dropping holes.

[0016] The utility model provides a plastic pellet extrusion dryer, which has the following beneficial effects:

[0017] 1. The utility model arranges spiral blades and stirring blades inside the drying cylinder, and arranges reinforcement rods and rotating rods inside the blanking cylinder. Therefore, when the plastic pellets are heated by the electric heating rod inside the drying cylinder, the first rotating rod drives the spiral blades to rotate, and the reinforcing rod drives the rotating rod to rotate, and the second rotating rod drives the stirring blades to rotate. Therefore, the plastic pellets can be fully rotated and stirred to disperse the clumped plastic pellets, and the accumulated plastic pellets can be turned upside down for drying. Therefore, the plastic pellets can be dried quickly and fully.

[0018] 2. The utility model provides slag dropping holes on the surface of the blanking barrel, which can separate the debris generated during the drying process of the plastic pellets out of the blanking barrel. The debris falls from the slag dropping holes, thereby improving the quality of the plastic pellets. Moreover, the plastic pellets in the blanking barrel can be heated and dried again by an electric heating ring, thereby improving the dryness of the plastic pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0021] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0022] Figure 4 For this utility model Figure 2 Enlarged view of point B.

[0023] In the figure: 1. Drying cylinder; 2. Electric heating rod; 3. Stirring blade; 4. Second rotating rod; 5. Spiral blade; 6. Feeding pipe; 7. Driven gear; 8. Driving gear; 9. Exhaust pipe; 10. Motor; 11. First rotating rod; 12. Dropping hole; 13. Reinforcement rod; 14. Rotating rod; 15. Dropping cylinder; 16. Discharging pipe; 17. Support leg; 18. Slag dropping hole; 19. Electric heating ring; 20. Scraping strip; 21. Rotating hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example 1

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The plastic pellet extrusion dryer shown in the figure includes a drying cylinder 1, the inner wall of the drying cylinder 1 is inlaid with an electric heating rod 2, a first rotating rod 11 is rotatably passed through the middle of the interior of the drying cylinder 1, a motor 10 is installed on the top of the first rotating rod 11, a driving gear 8 is installed on the top surface of the first rotating rod 11, and a spiral blade 5 is fixed on the surface of the first rotating rod 11. A second rotating rod 4 is rotatably installed inside the drying cylinder 1 and located around the first rotating rod 11, and a driven gear is installed on the top of the surface of the second rotating rod 4. 7. A stirring blade 3 is fixed on the surface of the second rotating rod 4. A blanking hole 12 is opened at the bottom end of the drying cylinder 1. A rotating hole 21 is opened in the middle of the bottom end of the drying cylinder 1. The first rotating rod 11 rotates through the rotating hole 21. A blanking cylinder 15 is fixed to the bottom end of the drying cylinder 1. A reinforcing rod 13 is fixed on the surface of the first rotating rod 11 and located inside the blanking cylinder 15. A rotating rod 14 is fixed on the outer end of the reinforcing rod 13. A scraping strip 20 is connected to the outer side of the rotating rod 14 and in contact with the inner wall of the blanking cylinder 15.

[0027] When the plastic pellets are heated by the electric heating rod 2 inside the drying cylinder 1, the first rotating rod 11 drives the spiral blade 5 to rotate, and drives the rotating rod 14 to rotate through the reinforcing rod 13, and the second rotating rod 4 drives the stirring blade 3 to rotate, so that the plastic pellets can be fully rotated and stirred to disperse the clumped plastic pellets, and the accumulated plastic pellets are turned upside down for drying, so that the plastic pellets can be dried quickly and fully.

[0028] The drying cylinder 1 is a cylindrical structure. The driving gear 8 is meshed and transmission-connected with the driven gear 7 , and both are horizontally arranged near the inner top of the drying cylinder 1 .

[0029] The electric heating rod 2 is a long strip structure and is vertically arranged. The first rotating rod 11 and the second rotating rod 4 are both rotatably mounted and connected to the drying cylinder 1 and are both vertically arranged. The stirring blade 3 and the spiral blade 5 are arranged with a gap.

[0030] The drop holes 12 are evenly distributed at the bottom end of the drying cylinder 1, and the drop cylinder 15 is a conical cylinder structure.

[0031] The reinforcing rod 13 is horizontally arranged, the rotating rod 14 is obliquely arranged on the inner side of the blanking barrel 15, and the scraping strip 20 is obliquely arranged and scrapes and contacts with the inner surface of the blanking barrel 15, and is made of rubber material.

[0032] Example 2

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The plastic pellet extrusion dryer shown in the figure includes a drying cylinder 1, the inner wall of the drying cylinder 1 is inlaid with an electric heating rod 2, a first rotating rod 11 is rotatably passed through the middle of the interior of the drying cylinder 1, a motor 10 is installed on the top of the first rotating rod 11, a driving gear 8 is installed on the top surface of the first rotating rod 11, and a spiral blade 5 is fixed on the surface of the first rotating rod 11. A second rotating rod 4 is rotatably installed inside the drying cylinder 1 and located around the first rotating rod 11, and a driven gear is installed on the top of the surface of the second rotating rod 4. 7. A stirring blade 3 is fixed on the surface of the second rotating rod 4. A blanking hole 12 is opened at the bottom end of the drying cylinder 1. A rotating hole 21 is opened in the middle of the bottom end of the drying cylinder 1. The first rotating rod 11 rotates through the rotating hole 21. A blanking cylinder 15 is fixed to the bottom end of the drying cylinder 1. A reinforcing rod 13 is fixed on the surface of the first rotating rod 11 and located inside the blanking cylinder 15. A rotating rod 14 is fixed on the outer end of the reinforcing rod 13. A scraping strip 20 is connected to the outer side of the rotating rod 14 and in contact with the inner wall of the blanking cylinder 15.

[0034] When the plastic pellets are heated by the electric heating rod 2 inside the drying cylinder 1, the first rotating rod 11 drives the spiral blade 5 to rotate, and drives the rotating rod 14 to rotate through the reinforcing rod 13, and the second rotating rod 4 drives the stirring blade 3 to rotate, so that the plastic pellets can be fully rotated and stirred to disperse the clumped plastic pellets, and the accumulated plastic pellets are turned upside down for drying, so that the plastic pellets can be dried quickly and fully.

[0035] An exhaust pipe 9 is fixed to the top of the drying cylinder 1, a feed pipe 6 is connected to the top of the side of the drying cylinder 1, a support leg 17 is fixed to the edge of the blanking cylinder 15, a discharge pipe 16 is installed in the middle of the bottom end of the blanking cylinder 15, a slag drop hole 18 is opened on the surface of the blanking cylinder 15, and an electric heating ring 19 is installed on the outer side of the blanking cylinder 15.

[0036] A slag drop hole 18 is provided on the surface of the blanking barrel 15, so that the debris generated during the drying process of the plastic pellets can be separated from the blanking barrel 15. The debris falls from the slag drop hole 18, thereby improving the quality of the plastic pellets. Moreover, the plastic pellets in the blanking barrel 15 can be heated and dried again by the electric heating ring 19, thereby improving the dryness of the plastic pellets.

[0037] The slag dropping holes 18 are evenly distributed on the surface of the blanking barrel 15 and have a diameter smaller than that of the blanking holes 12 . The electric heating ring 19 is a circular ring structure and is spaced apart from the slag dropping holes 18 .

[0038] Working mode: By arranging the spiral blade 5 and the stirring blade 3 inside the drying cylinder 1, and arranging the reinforcement rod 13 and the rotating rod 14 inside the blanking cylinder 15, the first rotating rod 11 drives the spiral blade 5 to rotate during the heating process of the plastic pellets inside the drying cylinder 1 by the electric heating rod 2, and drives the rotating rod 14 to rotate through the reinforcement rod 13, and the second rotating rod 4 drives the stirring blade 3 to rotate, so that the plastic pellets can be fully rotated and stirred, the clumped plastic pellets can be dispersed, and the accumulated plastic pellets can be turned upside down for drying, so that the plastic pellets can be dried quickly and fully.

[0039] A slag drop hole 18 is provided on the surface of the blanking barrel 15, so that the debris generated during the drying process of the plastic pellets can be separated from the blanking barrel 15. The debris falls from the slag drop hole 18, thereby improving the quality of the plastic pellets. Moreover, the plastic pellets in the blanking barrel 15 can be heated and dried again by the electric heating ring 19, thereby improving the dryness of the plastic pellets.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic pellet extrusion dryer, comprising a drying cylinder (1), characterized in that: The inner wall of the drying cylinder (1) is inlaid with an electric heating rod (2); a first rotating rod (11) is rotatably passed through the middle of the interior of the drying cylinder (1); a motor (10) is installed at the top end of the first rotating rod (11); a driving gear (8) is installed on the top surface of the first rotating rod (11); a spiral blade (5) is fixed on the surface of the first rotating rod (11); a second rotating rod (4) is rotatably installed inside the drying cylinder (1) and at a position around the first rotating rod (11); a driven gear (7) is installed on the top end of the surface of the second rotating rod (4); A stirring blade (3) is fixed on the surface, a material drop hole (12) is opened at the bottom end of the drying cylinder (1), a rotating hole (21) is opened in the middle of the bottom end of the drying cylinder (1), the first rotating rod (11) rotates through the rotating hole (21), a material drop barrel (15) is fixed at the bottom end of the drying cylinder (1), a reinforcement rod (13) is fixed on the surface of the first rotating rod (11) and the surface located inside the material drop barrel (15), a rotating rod (14) is fixed on the outer end of the reinforcement rod (13), and a scraping strip (20) is connected to the outer side of the rotating rod (14) and at a position in contact with the inner wall of the material drop barrel (15).

2. A plastic pellet extrusion dryer according to claim 1, characterized in that: An exhaust pipe (9) is fixed to the top of the drying cylinder (1), a feed pipe (6) is connected to the top of the side of the drying cylinder (1), a support leg (17) is fixed to the edge of the blanking cylinder (15), a discharge pipe (16) is installed in the middle of the bottom end of the blanking cylinder (15), a slag drop hole (18) is opened on the surface of the blanking cylinder (15), and an electric heating ring (19) is installed on the outer side of the blanking cylinder (15).

3. The plastic pellet extrusion dryer according to claim 1, characterized in that: The drying cylinder (1) is a cylindrical structure, the driving gear (8) is meshingly connected with the driven gear (7) and both are arranged horizontally near the inner top of the drying cylinder (1).

4. The plastic pellet extrusion dryer according to claim 1, characterized in that: The electric heating rod (2) is of an elongated structure and is arranged vertically; the first rotating rod (11) and the second rotating rod (4) are both rotatably mounted and connected to the drying cylinder (1) and are both arranged vertically; and the stirring blade (3) and the spiral blade (5) are arranged with a gap.

5. The plastic pellet extrusion dryer according to claim 1, characterized in that: The drop holes (12) are evenly distributed at the bottom end of the drying cylinder (1), and the drop cylinder (15) is a conical cylinder structure.

6. The plastic pellet extrusion dryer according to claim 1, characterized in that: The reinforcing rod (13) is arranged horizontally, the rotating rod (14) is arranged obliquely on the inner side of the blanking barrel (15), and the scraping strip (20) is arranged obliquely and is in scraping contact with the inner surface of the blanking barrel (15), and is made of rubber material.

7. The plastic pellet extrusion dryer according to claim 2, characterized in that: The slag dropping holes (18) are evenly distributed on the surface of the drop barrel (15) and have a diameter smaller than the drop holes (12). The electric heating ring (19) is a circular ring structure and is spaced apart from the slag dropping holes (18).

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