A plastic particle drying apparatus

Abstract

The utility model belongs to the technical field of plastic processing equipment, concretely relates to a kind of plastic particle drying equipment, including rack, the top of the rack is fixedly connected with drying bin, the inside lower portion of drying bin is equipped with air inlet, the sidewall top of drying bin is fixedly connected with feeding bin, the bottom of feeding bin is horizontally fixedly connected with spiral feeder, the inside both sides of drying bin are staggered and are equipped with several conveying plates, and one end of the sidewall of conveying plate towards drying bin both sides is fixedly connected with connecting shaft.The utility model has the beneficial effects that, by being provided with conveying plate and eccentric mechanism, plastic particles can flow in drying bin during drying, avoid plastic particles to be accumulated together to influence drying effect, and fully improve the contact time and contact area of plastic particles and hot air flow, improve drying effect;Meanwhile, conveying plate can vibrate when conveying plastic particles, avoid plastic particles to be blocked when conveying.

Description

Technical Field

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

[0002] Plastic particle drying equipment is a key piece of equipment in the plastics processing industry, primarily used to remove moisture from plastic particles to ensure the stable quality of plastic products. Its working principle is based on hot air circulation technology, which heats air and blows it evenly onto the surface of the plastic particles, causing the moisture to evaporate and be discharged from the equipment, thus achieving a drying effect. Plastic particle drying equipment is widely used in injection molding, extrusion, blow molding, and other plastics processing industries. In the injection molding industry, drying equipment removes moisture from raw materials, improving the strength and surface quality of plastic products; in the extrusion industry, drying equipment ensures the plastic particles are dry, preventing bubbles or dimensional instability on the product surface; in the blow molding industry, drying equipment affects the transparency and strength of the products.

[0003] Most existing drying equipment uses reactors or drums to dry plastic particles. During drying, plastic particles tend to accumulate inside the reactor or drum. At this time, the moisture in the plastic particles at the bottom is difficult to drain, while the plastic particles at the top are prone to denaturation due to excessive temperature, which affects the drying effect. Utility Model Content

[0004] The purpose of this invention is to solve the problem that plastic particles tend to accumulate inside existing drying equipment, affecting the drying effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A plastic particle drying device includes a frame, a drying chamber fixedly connected to the top of the frame, an air inlet on the lower inner side of the drying chamber, a feeding hopper fixedly connected to the top of the side wall of the drying chamber, a screw feeder horizontally fixedly connected to the bottom of the feeding hopper, several conveyor plates staggered on both sides of the interior of the drying chamber, a connecting shaft fixedly connected to one end of each conveyor plate facing the side wall of the drying chamber, the connecting shaft rotatably connected to the rear inner wall of the drying chamber, two sets of swing mechanisms provided on the rear outer wall of the drying chamber, each swing mechanism including a rocker arm, the rocker arm fixedly connected to the end of the connecting shaft, the rocker arm being perpendicular to the connecting shaft, a connecting rod hinged to one end of each rocker arm away from the connecting shaft, a transmission rod hinged to the top of the connecting rod, a motor horizontally arranged on the rear side of the drying chamber, a drive wheel fixedly connected to the motor shaft, and the other end of the transmission rod rotatably connected to the edge of the drive wheel.

[0007] Furthermore, a mounting bracket is provided between the motor and the side wall of the drying chamber, and the mounting bracket is slidably connected to the side wall of the drying chamber by a slider.

[0008] Furthermore, a fixing rod is fixedly connected between the pair of sliders, and an electric cylinder is vertically installed on the rear outer wall of the drying chamber, with the piston rod of the electric cylinder fixedly connected to the middle of the fixing rod.

[0009] Furthermore, a filter screen is fixedly connected to the inner side of the air inlet.

[0010] Furthermore, an inclined plate is fixedly connected to the bottom inner side of the drying chamber, and a discharge pipe is provided on the side of the drying chamber facing the bottom of the inclined plate.

[0011] Furthermore, the surface of the conveyor plate is provided with several through holes, and the conveyor plate is inclined downwards.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The plastic particle drying equipment of this utility model, by setting a conveyor plate and a swing mechanism, allows the plastic particles to flow in the drying chamber during drying, avoiding the accumulation of plastic particles and affecting the drying effect, and fully increasing the contact time and contact area between the plastic particles and the hot airflow, thereby improving the drying effect; at the same time, it can make the conveyor plate vibrate when conveying the plastic particles, so as to avoid the plastic particles from clogging during conveying.

[0014] 2. The plastic particle drying equipment of this utility model is equipped with an electric cylinder, a fixed rod and a slider, which can adjust the angle of the conveyor plate according to the moisture content of the plastic particles, thereby changing the drying speed of the plastic particles in the drying chamber and effectively improving the applicability of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a plastic particle drying device according to the present invention.

[0016] Figure 2 This is a cross-sectional structural diagram of a plastic particle drying device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the rear structure of a plastic particle drying device according to the present invention.

[0018] Figure 4 This is a top view schematic diagram of a plastic particle drying device according to the present invention.

[0019] Figure 5 This is an enlarged schematic diagram of section A of a plastic particle drying device according to this utility model.

[0020] In the diagram: 1. Frame; 2. Drying chamber; 3. Feeding chamber; 4. Discharge pipe; 5. Screw feeder; 6. Conveyor plate; 7. Connecting shaft; 8. Inclined plate; 9. Air inlet; 10. Swinging mechanism; 1001. Rocker arm; 1002. Connecting rod; 1003. Transmission rod; 1004. Mounting bracket; 1005. Motor; 1006. Drive wheel; 1007. Slider; 11. Fixed rod; 12. Electric cylinder; 13. Filter screen. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5The plastic particle drying equipment of this embodiment includes a frame 1, a drying chamber 2 fixedly connected to the top of the frame 1, an air inlet 9 opened on the lower inner side of the drying chamber 2, a feeding hopper 3 fixedly connected to the top of the side wall of the drying chamber 2, a screw feeder 5 horizontally fixedly connected to the bottom of the feeding hopper 3, several conveyor plates 6 are staggered on both sides of the interior of the drying chamber 2, a connecting shaft 7 is fixedly connected to one end of the conveyor plate 6 facing the side wall of the drying chamber 2, the connecting shaft 7 is rotatably connected to the rear inner wall of the drying chamber 2, and two sets of swing mechanisms 10 are provided on the rear outer wall of the drying chamber 2. The oscillation mechanism 10 is used to drive the conveyor plate 6 to vibrate during conveying. It includes a rocker arm 1001, which is fixedly connected to the end of the connecting shaft 7. The rocker arm 1001 is arranged perpendicular to the connecting shaft 7. A connecting rod 1002 is hinged to one end of the rocker arm 1001 away from the connecting shaft 7. A transmission rod 1003 is hinged to the top of the connecting rod 1002. A motor 1005 is horizontally arranged on the rear side of the drying chamber 2. A drive wheel 1006 is fixedly connected to the rotating shaft of the motor 1005. The other end of the transmission rod 1003 is rotatably connected to the edge of the drive wheel 1006. During drying, the plastic particles to be dried are added to the feeding hopper 3, and then fed into the drying chamber 2 at a uniform speed by the screw conveyor 5. At this time, hot air is introduced into the drying chamber 2 through the air inlet 9. After entering the drying chamber 2, the plastic particles fall onto the surface of the top conveyor plate 6, and then roll downwards along the staggered conveyor plates 6 under the action of gravity. During the rolling process, the upward-moving hot airflow flows through the plastic particles, drying the moisture in the plastic particles, preventing the plastic particles from piling up and affecting the drying effect, and fully improving the contact between the plastic particles and the hot airflow. The contact time and contact area are increased to improve the drying effect. When the plastic particles are drying, the drive wheel 1006 is driven to rotate by the motors 1005 on both sides. This causes the transmission rod 1003 connected to the edge of the drive wheel 1006 to drive the connecting rod 1002 to move up and down. This causes the rocker arm 1001 hinged at both ends of the connecting rod 1002 to swing up and down, thereby causing the connecting shaft 7 and the conveyor plate 6 to move accordingly. This causes the plastic particles on the top of the conveyor plate 6 to vibrate during the conveying process, preventing the plastic particles from clogging the through holes on the surface of the conveyor plate 6 and affecting the drying effect.

[0023] A mounting bracket 1004 is provided between the motor 1005 and the side wall of the drying chamber 2. The mounting bracket 1004 and the side wall of the drying chamber 2 are slidably connected by a slider 1007. A fixing rod 11 is fixedly connected between a pair of sliders 1007. An electric cylinder 12 is vertically installed on the rear outer wall of the drying chamber 2. The piston rod of the electric cylinder 12 is fixedly connected to the middle of the fixing rod 11. By driving the fixing rod 11 to move vertically through the electric cylinder 12, the sliders 1007 on both sides and the motor 1005 can move accordingly. When the motor 1005 moves, it drives the drive wheel 1006 and the transmission rod 1003 to move, thereby changing the initial height of the connecting rod 1002, and thus changing the angle of the rocker arm 1001, thereby changing the initial angle of the conveyor plate 6. Through the above steps, the angle of the conveyor plate 6 can be adjusted according to the moisture content of the plastic particles, thereby changing the residence time of the plastic particles in the drying chamber 2 and effectively improving the applicability of the equipment.

[0024] A filter 13 is fixedly connected to the inside of the air inlet 9. The filter 13 can prevent plastic particles from clogging the air inlet 9.

[0025] An inclined plate 8 is fixedly connected to the bottom inner side of the drying chamber 2, and a discharge pipe 4 is provided on the side of the drying chamber 2 facing the bottom of the inclined plate 8. After the plastic particles are dried, they fall onto the surface of the inclined plate 8 and finally roll down the inclined plate 8 into the discharge pipe 4 for discharge.

[0026] The surface of the conveyor plate 6 has several through holes, and the conveyor plate 6 is inclined downward.

[0027] Working principle: During drying, the plastic particles to be dried are added to the feeding hopper 3, and then the plastic particles are fed into the drying hopper 2 at a uniform speed through the screw feeder 5. At this time, hot air is introduced into the drying hopper 2 through the air inlet 9. After entering the drying hopper 2, the plastic particles fall onto the surface of the top conveyor plate 6, and then roll down along the staggered conveyor plates 6 under the action of gravity. During the rolling process, the upward hot airflow flows through the plastic particles, drying the moisture in the plastic particles, avoiding the plastic particles from accumulating together and affecting the drying effect, and fully increasing the contact time and contact area between the plastic particles and the hot airflow, thus improving the drying effect. During the drying process, the plastic particles are driven by the motors 1005 on both sides to rotate the drive wheel 1006. This causes the transmission rod 1003 connected to the edge of the drive wheel 1006 to drive the connecting rod 1002 to move up and down. This causes the rocker arms 1001 hinged at both ends of the connecting rod 1002 to swing up and down, thereby causing the connecting shaft 7 and the conveyor plate 6 to move accordingly. This causes the plastic particles on the top of the conveyor plate 6 to vibrate during the conveying process, preventing the plastic particles from clogging the through holes on the surface of the conveyor plate 6 and affecting the drying effect. After the plastic particles are dried, they fall onto the surface of the inclined plate 8 and finally roll down the inclined plate 8 into the feed pipe 4 for feeding.

[0028] The electric cylinder 12 drives the fixed rod 11 to move vertically, which causes the sliders 1007 on both sides and the motor 1005 to move accordingly. When the motor 1005 moves, it drives the drive wheel 1006 and the transmission rod 1003 to move, thereby changing the initial height of the connecting rod 1002, which in turn changes the angle of the rocker arm 1001, thus changing the initial angle of the conveyor plate 6. Through the above steps, the angle of the conveyor plate 6 can be adjusted according to the moisture content of the plastic particles, thereby changing the residence time of the plastic particles in the drying chamber 2 and effectively improving the applicability of the equipment.

[0029] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic particle drying device, characterized in that: The equipment includes a frame (1), a drying chamber (2) fixedly connected to the top of the frame (1), an air inlet (9) opened on the lower inner side of the drying chamber (2), a feeding hopper (3) fixedly connected to the top of the side wall of the drying chamber (2), a screw feeder (5) fixedly connected to the bottom of the feeding hopper (3), several conveyor plates (6) are staggered on both sides of the interior of the drying chamber (2), a connecting shaft (7) is fixedly connected to one end of the conveyor plate (6) facing the side wall of the drying chamber (2), the connecting shaft (7) is rotatably connected to the inner rear wall of the drying chamber (2), and two sets of swing mechanisms (1) are provided on the outer rear wall of the drying chamber (2). 0), the oscillation mechanism (10) includes a rocker arm (1001), the rocker arm (1001) is fixedly connected to the end of the connecting shaft (7), the rocker arm (1001) is perpendicular to the connecting shaft (7), a connecting rod (1002) is hinged to one end of the rocker arm (1001) away from the connecting shaft (7), a transmission rod (1003) is hinged to the top of the connecting rod (1002), a motor (1005) is horizontally arranged on the rear side of the drying chamber (2), a drive wheel (1006) is fixedly connected to the rotating shaft of the motor (1005), and the other end of the transmission rod (1003) is rotatably connected to the edge of the drive wheel (1006).

2. The plastic particle drying equipment according to claim 1, characterized in that: An mounting bracket (1004) is provided between the motor (1005) and the side wall of the drying chamber (2), and the mounting bracket (1004) and the side wall of the drying chamber (2) are slidably connected by a slider (1007).

3. The plastic particle drying equipment according to claim 2, characterized in that: A fixed rod (11) is fixedly connected between a pair of sliding blocks (1007). An electric cylinder (12) is vertically arranged on the rear outer wall of the drying chamber (2). The piston rod of the electric cylinder (12) is fixedly connected to the middle part of the fixed rod (11).

4. The plastic particle drying equipment according to claim 1, characterized in that: A filter screen (13) is fixedly connected to the inside of the air inlet (9).

5. A plastic particle drying device according to claim 1, characterized in that: An inclined plate (8) is fixedly connected to the bottom inner side of the drying chamber (2), and a feed pipe (4) is provided on the side of the drying chamber (2) facing the bottom end of the inclined plate (8).

6. The plastic particle drying equipment according to claim 1, characterized in that: The surface of the conveyor plate (6) is provided with several through holes, and the conveyor plate (6) is inclined downward.

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