Plastic particle drying device with uniform heating function

Abstract

The utility model relates to the technical field of plastics processing, specifically disclose a kind of plastic particle drying device with uniform heating function, including a kind of plastic particle drying device with uniform heating function, including: support, preheating tank and drying tank, hot circulation pipe group is arranged between the preheating tank and drying tank;The support is used to fix preheating tank and drying tank, the preheating tank is installed at the top of drying tank, the top of preheating tank is provided with feed inlet, preheating tank bottom end is provided with multiple through-holes, stirring rod is provided in the preheating tank, the top of preheating tank is provided with the drive mechanism for driving stirring rod rotation;The bottom of drying tank is provided with discharge pipe, and the drying tank bottom end is penetrated and rotatably installed with air inlet pipe.The utility model has waste gas preheating recycling function, more energy saving and environmental protection, has uniform distribution type heating structure, improves the heating efficiency to plastic particle.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically to a plastic particle drying device with uniform heating function. Background Technology

[0002] Plastic particles must be dried before injection molding, extrusion and other processing to remove moisture. Residual moisture can cause defects such as bubbles, silver streaks and reduced strength in the product, which has a more significant impact on engineering plastics and recycled plastics.

[0003] Chinese patent (CN222346023U) discloses a drying device for plastic particles. A blower is installed outside the material cylinder, and the blower's outlet is connected to the material cylinder via a heater. A motor is mounted on the top plate of the material cylinder. The rotating shaft of a screw conveyor is mounted on the output shaft of the motor. A conveying cylinder is fitted onto the screw conveyor, with both its upper and lower ends open. The conveying cylinder is connected to the top plate via a suspension rod, and there is a distance between the top of the conveying cylinder and the top plate. The screw conveyor's spiral blades extend upwards to the top of the conveying cylinder and downwards to the bottom of the conveying cylinder. The screw conveyor is used to lift plastic particles from the bottom of the material cylinder to the top of the material cylinder. A discharge valve is installed at the bottom of the material cylinder, and a discharge pipe is installed below the discharge valve. An inlet pipe is installed on the top plate.

[0004] However, there are some drawbacks in the above-mentioned technologies. For example, during the use of plastic particle drying devices, the generated waste gas is usually directly discharged from the drying device, and the waste gas carries a lot of heat when discharged, which makes the drying device not energy-efficient and the heating effect not high enough. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a plastic particle drying device with uniform heating function, which can overcome the above-mentioned technical defects.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A plastic particle drying device with uniform heating function includes: a support, a preheating tank and a drying tank, wherein a heat circulation pipe assembly is provided between the preheating tank and the drying tank;

[0008] The bracket is used to fix the preheating tank and the drying tank. The preheating tank is installed on the top of the drying tank. The top of the preheating tank is provided with a feed inlet. The bottom of the preheating tank is provided with multiple through holes. A stirring rod is provided inside the preheating tank. A drive mechanism for driving the stirring rod to rotate is provided on the top of the preheating tank.

[0009] The bottom of the drying tank is provided with a discharge pipe, and an air inlet pipe is installed through and rotatably at the bottom of the drying tank. The air inlet pipe is fixedly connected to the stirring rod by a coupling. The side wall of the air inlet pipe is provided with two rows of air delivery rods arranged at equal intervals and staggered. The inner wall of the drying tank is provided with multiple guide ring plates distributed in a linear array. The bottom end of the air delivery rod is connected to a hot air conveying assembly.

[0010] The heat circulation tube assembly includes a spiral heat exchange tube located inside the preheating tank. The stirring rod is located in the middle of the spiral heat exchange tube. The top and bottom ends of the spiral heat exchange tube extend horizontally to the outside of the preheating tank. An exhaust pipe is provided on the side wall of the drying tank. The end of the exhaust pipe away from the drying tank is fixedly connected to the spiral heat exchange tube through a flange.

[0011] Preferably, the drive mechanism includes a support base and a motor. The support base is fixedly installed on the top of the preheating tank, the motor is fixedly installed on the top of the support base, and the output shaft of the motor is fixedly connected to the stirring rod through a coupling.

[0012] Preferably, the air delivery rod includes a rod with a groove at its bottom end and a plurality of air delivery holes arranged in an array at the bottom of the rod, the air delivery holes being located on the top wall of the groove.

[0013] Preferably, the end face of the rod away from the intake pipe is trapezoidal, and the end of the rod away from the intake pipe extends to the space between two adjacent guide ring plates.

[0014] Preferably, the flow guide ring plate and the multiple air delivery rods are arranged in an alternating pattern, and the axial cross section of the flow guide ring plate is trapezoidal.

[0015] Preferably, the hot air conveying assembly includes a hot air blower, and a conveying pipe is provided between the air outlet of the hot air blower and the bottom end of the air inlet pipe. The conveying pipe is rotatably connected to the air inlet pipe through a rotary coupling.

[0016] Preferably, a support ring is fixedly sleeved on the outer wall of the air intake pipe, and a limit sleeve is installed at the bottom of the drying tank by fasteners. The support ring and the limit sleeve are rotatably connected, and the inner wall of the limit sleeve that fits against the support ring is provided with a flexible coating.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. By setting up a hot circulation pipe assembly, a preheating tank, and a drying tank, the plastic particles to be heated are poured into the preheating tank through the feed inlet. The motor drives the stirring rod to stir the plastic particles and they flow into the drying tank through the bottom hole of the preheating tank. The hot air blower, together with the conveying pipe, draws hot air into the air inlet pipe. Then, the hot air flows out from the air outlet of multiple air delivery rods to uniformly heat the plastic particles in the drying tank. The exhaust gas produced in the drying tank flows into the spiral heat exchange tube through the exhaust pipe to preheat the plastic particles in the preheating tank.

[0019] It has the function of preheating and recovering waste gas, making it more energy-efficient and environmentally friendly.

[0020] 2. By setting up air delivery rods and air inlet pipes, the hot air blower, together with the delivery pipe, draws hot air into the air inlet pipe. Then, the hot air flows out from the air delivery holes of multiple air delivery rods, uniformly heating the plastic particles in the drying tank. The arrangement of multiple air delivery rods ensures that the plastic particles are evenly stirred. The air inlet pipe and the stirring rod rotate synchronously, and the multiple air delivery rods stir the plastic particles. The plastic particles in the drying tank are concentrated in the middle for heating, and the plastic particles near the inner wall of the drying tank slide from the guide ring plate towards the middle.

[0021] It features a uniformly distributed heating structure, which improves the heating efficiency of plastic particles. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is an installation structure diagram of the preheating tank and the drying tank in this utility model;

[0025] Figure 3 This is an installation structure diagram of the heat circulation pipe assembly in this utility model;

[0026] Figure 4 This is a cross-sectional view of the drying tank in this utility model;

[0027] Figure 5 This is a structural diagram of the air delivery rod in this utility model.

[0028] Figure 6 This is a structural diagram of the installation of the rod in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] In the diagram: 1. Support frame; 2. Preheating tank; 21. Feed inlet; 22. Stirring rod; 23. Support base; 24. Motor; 3. Drying tank; 31. Discharge pipe; 32. Air inlet pipe; 33. Air delivery rod; 331. Rod; 332. Groove; 333. Air delivery hole; 34. Guide ring plate; 41. Spiral heat exchange tube; 42. Exhaust pipe; 51. Support ring; 52. Limiting sleeve; 6. Hot air blower; 61. Conveying pipe. Detailed Implementation

[0031] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects of this utility model are clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "inner" and "outer" are based on the orientation or position shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore should not be construed as a limitation of this application.

[0033] Reference Figures 1-6 This utility model discloses a plastic particle drying device with uniform heating function, comprising:

[0034] The apparatus includes a bracket 1, a preheating tank 2, and a drying tank 3. The bracket 1 is used to fix the preheating tank 2 and the drying tank 3. The preheating tank 2 is installed on the top of the drying tank 3. The top of the preheating tank 2 is provided with a feed inlet 21. The preheating tank 2 is provided with a stirring rod 22. The bottom of the preheating tank 2 is provided with multiple through holes. The top of the preheating tank 2 is provided with a drive mechanism for driving the stirring rod 22 to rotate. The drive mechanism includes a support base 23 and a motor 24. The support base 23 is fixedly installed on the top of the preheating tank 2, and the motor 24 is fixedly installed on the top of the support base 23. The output shaft of the motor 24 is fixedly connected to the stirring rod 22 through a coupling.

[0035] A discharge pipe 31 is provided at the bottom end of the drying tank 3. An air inlet pipe 32 is rotatably installed through the bottom end of the drying tank 3. The air inlet pipe 32 is fixedly connected to the stirring rod 22 by a coupling. Two rows of air delivery rods 33 are provided on the side wall of the air inlet pipe 32, arranged at equal intervals and alternately. The air delivery rod 33 includes a rod 331. The end face of the rod 331 away from the air inlet pipe 32 is trapezoidal. A groove 332 is provided at the bottom end of the rod 331. Multiple air delivery holes 333 are arranged in an array at the bottom of the rod 331. The air delivery holes 333 are located on the top wall of the groove 332. Multiple guide ring plates 34 are arranged in a linear array on the inner wall of the drying tank 3. Plate 34 and multiple air delivery rods 33 are arranged in an alternating manner. The axial cross section of the guide ring plate 34 is trapezoidal. The end of the rod 331 away from the air inlet pipe 32 extends to the space between two adjacent guide ring plates 34. The bottom end of the air delivery rod 33 is connected to a hot air conveying assembly. The hot air conveying assembly includes a hot air blower 6. A conveying pipe 61 is provided between the air outlet of the hot air blower 6 and the bottom end of the air inlet pipe 32. A support ring 51 is fixedly sleeved on the outer wall of the air inlet pipe 32. A limit sleeve 52 is installed at the bottom end of the drying tank 3 by fasteners. The support ring 51 and the limit sleeve 52 are rotatably connected. The inner wall of the limit sleeve 52 that fits against the support ring 51 is provided with a flexible coating.

[0036] A heat circulation pipe assembly is provided between the preheating tank 2 and the drying tank 3. The heat circulation pipe assembly includes a spiral heat exchanger 41, which is located inside the preheating tank 2. The stirring rod 22 is located in the middle of the spiral heat exchanger 41. The top and bottom ends of the spiral heat exchanger 41 extend horizontally to the outside of the preheating tank 2. An exhaust pipe 42 is provided on the side wall of the drying tank 3. The end of the exhaust pipe 42 away from the drying tank 3 is fixedly connected to the spiral heat exchanger 41 through a flange.

[0037] The working principle and usage process of this utility model are as follows: First, the plastic particles to be heated are poured into the preheating tank 2 through the feed port 21. The motor 24 drives the stirring rod 22 to stir the plastic particles and flow into the drying tank 3 through the bottom hole of the preheating tank 2. The hot air blower 6, together with the conveying pipe 61, draws hot air into the air inlet pipe 32. Then, the hot air flows out from the air outlet 333 of multiple air delivery rods 33 to uniformly heat the plastic particles in the drying tank 3. The arrangement of multiple air delivery rods 33 makes the plastic particles evenly stirred. The air inlet pipe 32 and the stirring rod 22 rotate synchronously. The multiple air delivery rods 33 stir the plastic particles, and the plastic particles in the drying tank 3 are concentrated in the middle for heating. The plastic particles near the inner wall of the drying tank 3 slide from the guide ring plate 34 to the middle. At the same time, the exhaust gas produced in the drying tank 3 flows into the spiral heat exchange tube 41 from the exhaust pipe 42 to preheat the plastic particles in the preheating tank 2.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A plastic particle drying device with uniform heating function, characterized in that, include: The support (1), the preheating tank (2) and the drying tank (3) are provided with a heat circulation pipe assembly between the preheating tank (2) and the drying tank (3); The bracket (1) is used to fix the preheating tank (2) and the drying tank (3). The preheating tank (2) is installed on the top of the drying tank (3). The top of the preheating tank (2) is provided with a feed inlet (21). The bottom of the preheating tank (2) is provided with multiple through holes. The preheating tank (2) is provided with a stirring rod (22). The top of the preheating tank (2) is provided with a driving mechanism for driving the stirring rod (22) to rotate. The bottom end of the drying tank (3) is provided with a discharge pipe (31), and the bottom end of the drying tank (3) is provided with an air inlet pipe (32) that is rotatably installed. The air inlet pipe (32) is fixedly connected to the stirring rod (22) by a coupling. The side wall of the air inlet pipe (32) is provided with two rows of air delivery rods (33) arranged at equal intervals. The inner wall of the drying tank (3) is provided with multiple guide ring plates (34) arranged in a linear array. The bottom end of the air delivery rods (33) is connected to a hot air conveying assembly. The heat circulation tube assembly includes a spiral heat exchange tube (41), which is located inside the preheating tank (2). The stirring rod (22) is located in the middle of the spiral heat exchange tube (41). The top and bottom ends of the spiral heat exchange tube (41) extend horizontally to the outside of the preheating tank (2). The side wall of the drying tank (3) is provided with an exhaust pipe (42). The end of the exhaust pipe (42) away from the drying tank (3) is fixedly connected to the spiral heat exchange tube (41) through a flange.

2. The plastic particle drying apparatus having a uniform heating function according to claim 1, characterized in that: The driving mechanism includes a support base (23) and a motor (24). The support base (23) is fixedly installed on the top of the preheating tank (2), and the motor (24) is fixedly installed on the top of the support base (23). The output shaft of the motor (24) is fixedly connected to the stirring rod (22) through a coupling.

3. The plastic particle drying apparatus having a uniform heating function according to claim 1, wherein: The air delivery rod (33) includes a rod (331), the bottom end of the rod (331) is provided with a groove (332), and the bottom of the rod (331) is provided with a plurality of air delivery holes (333) arranged in an array, the air delivery holes (333) being located on the top wall of the groove (332).

4. The plastic particle drying apparatus having a uniform heating function according to claim 3, wherein: The end face of the rod (331) away from the intake pipe (32) is trapezoidal, and one end of the rod (331) away from the intake pipe (32) extends to the space between two adjacent guide ring plates (34).

5. The plastic particle drying apparatus having a uniform heating function according to claim 1, wherein: The flow guide ring plate (34) and multiple air delivery rods (33) are arranged in an alternating manner, and the axial cross section of the flow guide ring plate (34) is trapezoidal.

6. The plastic particle drying apparatus having a uniform heating function according to claim 1, wherein: The hot air delivery assembly includes a hot air blower (6), and a delivery pipe (61) is provided between the air outlet of the hot air blower (6) and the bottom end of the air inlet pipe (32).

7. The plastic particle drying apparatus having a uniform heating function according to claim 1, wherein: The outer wall of the air inlet pipe (32) is fixedly fitted with a support ring (51), and the bottom end of the drying tank (3) is fitted with a limiting sleeve (52) by fasteners. The support ring (51) and the limiting sleeve (52) are rotatably connected, and the inner wall of the limiting sleeve (52) that is in contact with the support ring (51) is provided with a flexible coating.

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