A plastic particle drying device

Abstract

The utility model discloses a kind of plastic particle drying devices, including preheating tank and drying cabinet, preheating tank and drying cabinet are connected by a conveyor belt, first stirring shaft is equipped in the preheating tank, drying cabinet is equipped with second stirring shaft and multiple drying lamps;The first stirring shaft is hollow shaft, one end of first stirring shaft is connected with driving motor, the other end is connected with air inlet pipe, heating rod is mounted in the first stirring shaft, and multiple hot air holes, which are connected inside and outside the first stirring shaft, are evenly arranged on the shaft body of the first stirring shaft.The plastic particle drying device of the utility model carries out secondary subsection heating to plastic particle by preheating tank cooperation drying cabinet, simultaneously, combined with stirring blade, plastic particle keeps moving, to ensure that particle pile whole heating uniformity, thereby improve drying effect, its overall energy utilization is higher, not easy to produce invalid loss, directly improve drying efficiency and reduce energy consumption.

Description

Technical Field

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

[0002] In the process of plastic recycling, waste plastic products are generally crushed and washed, then recycled and granulated through processes such as melting or chemical decomposition. These plastic particles are then used as raw materials for further processing. Throughout this process, whether it's the crushing, washing, and granulation of waste plastics or the transportation and storage of the granules, it is essential to ensure the dryness of the plastic particles to prevent them from becoming damp, clumping, or moldy. Therefore, drying equipment is typically used to dry the plastic particles during processing.

[0003] However, current plastic particle drying equipment still relies on fixed drying lamps and blowing hot air onto the piled-up particles for drying and dehumidification. This leads to the following shortcomings in plastic particle drying: 1. High energy consumption: When particles are piled in the drying zone, other drying zones must be overheated to meet the drying requirements of the wettest zone, resulting in significant energy waste; 2. Uneven drying: Except for the surface of the pile, if too many particles are piled up, the particles in the central area are prone to insufficient drying, while the surface and edge particles are likely to overheat; 3. Low efficiency: In order to achieve uniform drying, it is often necessary to reduce the throughput or extend the drying time, making it difficult to meet production needs in terms of drying efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a plastic particle drying device that offers more efficient and uniform drying with lower energy consumption.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model provides a plastic particle drying device, including a preheating tank and a drying box, which are connected by a conveyor belt. The preheating tank is provided with a first stirring shaft, and the drying box is provided with a second stirring shaft and multiple drying lamps. The first stirring shaft is a hollow shaft with both ends extending out of the preheating tank. One end of the first stirring shaft is connected to a drive motor, and the other end is connected to an air inlet pipe. A heating rod is installed inside the first stirring shaft, and multiple hot air holes communicating with the inside and outside of the first stirring shaft are evenly opened on the shaft body.

[0007] Preferably, the drying box has a drying box inlet at the top, which is located below the discharge end of the conveyor belt. The drying box has a drying box discharge outlet on one side near the bottom. An inclined bottom plate is installed on the bottom inner side of the drying box, and the lowest point of the bottom plate is adapted to the drying box discharge outlet to facilitate discharge after drying.

[0008] Preferably, the bottom plate is surrounded by a heat-conducting insulation net on the side near the discharge port of the drying box, and there is a gap between the heat-conducting insulation net and the side wall of the drying box. Multiple drying lamps are evenly installed in the gap. At least one drying lamp is also suspended and installed on the top of the inner side of the drying box. The drying lamp suspended on the top of the inner side of the drying box is also surrounded by a heat-conducting insulation net to separate the drying lamp from the inside of the drying box.

[0009] Preferably, the second stirring shaft penetrates the bottom plate, and one end of the second stirring shaft located below the bottom plate is connected to the motor. Near the top of the part of the second stirring shaft located above the bottom plate, an extension arm perpendicular to the second stirring shaft is connected, and multiple second stirring blades pointing towards the bottom plate are evenly installed on the extension arm.

[0010] Preferably, the preheating tank is an axially inclined cylinder with a tank inlet at the top of the bottom end and a tank outlet at the bottom of the high end, the tank outlet pointing towards the feed end of the conveyor belt.

[0011] Preferably, the first stirring shaft is arranged along the axial direction of the preheating tank, and a spiral first stirring blade is arranged around the outside of the first stirring shaft, with the first stirring blade being misaligned with the hot air hole.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] The plastic particle drying device of this invention uses a preheating tank in conjunction with a drying box to heat the plastic particles in two stages. At the same time, the stirring blades keep the plastic particles in motion, thereby ensuring the uniform heating of the particle pile as a whole, thus improving the drying effect. Its overall energy utilization rate is higher, and it is less likely to generate ineffective losses, directly improving the drying efficiency and reducing energy consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a plastic particle drying device.

[0015] Figure 2 for Figure 1 A schematic diagram of the internal structure of the drying oven.

[0016] 1-Preheating tank; 11-Tank inlet; 12-Tank outlet; 2-First stirring shaft; 21-First stirring blade; 22-Hot air vent; 23-Air inlet pipe; 3-Conveyor belt; 4-Drying box; 41-Drying box inlet; 42-Drying box outlet; 43-Bottom plate; 44-Heat-conducting insulation net; 45-Drying lamp; 5-Second stirring shaft; 51-Extension arm; 52-Second stirring blade. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] Example

[0019] Please see Figures 1 to 2 A plastic particle drying device includes a preheating tank 1 and a drying chamber 4, which are connected by a conveyor belt 3. The preheating tank 1 is provided with a first stirring shaft 2, and the drying chamber is provided with a second stirring shaft 5 and a plurality of drying lamps 45. The first stirring shaft 2 is a hollow shaft with both ends extending out of the preheating tank. One end of the first stirring shaft is connected to a drive motor, and the other end is connected to an air inlet pipe 23. A heating rod is installed inside the first stirring shaft, and a plurality of hot air holes 22 communicating with the inside and outside of the first stirring shaft are evenly opened on the shaft body.

[0020] The drying box 4 is provided with a drying box inlet 41 at the top, which is located below the discharge end of the conveyor belt. The drying box outlet 42 is provided on one side of the drying box near the bottom. An inclined bottom plate 43 is installed on the bottom of the inner side of the drying box, and the lowest point of the bottom plate is adapted to the drying box outlet to facilitate discharge after drying.

[0021] The bottom plate 43 is surrounded by a heat-conducting isolation net 44 on the side near the discharge port of the drying box. There is a gap between the heat-conducting isolation net and the side wall of the drying box. Multiple drying lamps are evenly installed in the gap. At least one drying lamp is also suspended and installed on the top of the inner side of the drying box. The drying lamp suspended on the top of the inner side of the drying box is also surrounded by a heat-conducting isolation net to separate the drying lamp from the inside of the drying box.

[0022] The second stirring shaft 5 penetrates the bottom plate 43. The end of the second stirring shaft located below the bottom plate is connected to the motor. The part of the second stirring shaft located above the bottom plate is connected to an extension arm 51 that is perpendicular to the second stirring shaft. Multiple second stirring blades 52 pointing towards the bottom plate are evenly installed on the extension arm.

[0023] The preheating tank 1 is an axially inclined cylinder. The bottom of the preheating tank has a tank inlet 11, and the top of the high end of the preheating tank has a tank outlet 12. The tank outlet points to the feed end of the conveyor belt.

[0024] The first stirring shaft 2 is arranged along the axial direction of the preheating tank, and a spiral first stirring blade 21 is arranged around the outside of the first stirring shaft. The first stirring blade is misaligned with the hot air hole.

[0025] The working principle of the plastic particle drying device in this embodiment is as follows: the plastic particles are preheated in a preheating tank, and the gas input through the air inlet pipe is heated by the heating rod in the first stirring shaft, so that the temperature inside the tank rises. At the same time, the first stirring blade drives the plastic particles to move towards the discharge port of the tank. During this process, the plastic particles are constantly tumbling, and the overall temperature rise is relatively uniform. The preheated plastic particles are output from the preheating tank and quickly transported to the drying chamber by the conveyor belt. The drying lamp in the drying chamber heats and dries the plastic particles a second time. During this process, the second stirring blade keeps moving to continuously drive the movement of the plastic particles, thereby ensuring the uniformity of temperature rise and improving the drying effect.

[0026] The beneficial effects of this utility model are: by using a preheating tank in conjunction with a drying box to heat the plastic particles in two stages, and by using stirring blades to keep the plastic particles in motion, the overall heating uniformity of the particle pile is ensured, thereby improving the drying effect, resulting in higher overall energy utilization, less ineffective loss, and directly improving drying efficiency and reducing energy consumption.

[0027] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A plastic particle drying apparatus, characterized by, It includes a preheating tank (1) and a drying box (4), which are connected by a conveyor belt (3). The preheating tank (1) is provided with a first stirring shaft (2), and the drying box is provided with a second stirring shaft (5) and multiple drying lamps (45). The first stirring shaft (2) is a hollow shaft with both ends extending out of the preheating tank. One end of the first stirring shaft is connected to a drive motor, and the other end is connected to an air inlet pipe (23). A heating rod is installed inside the first stirring shaft, and multiple hot air holes (22) that connect the inside and outside of the first stirring shaft are evenly opened on the shaft body of the first stirring shaft.

2. The plastic particle drying apparatus according to claim 1, wherein The drying box (4) is provided with a drying box inlet (41) above it. The drying box inlet is located below the discharge end of the conveyor belt. The drying box discharge outlet (42) is provided on one side of the drying box near the bottom. The bottom of the inner side of the drying box is equipped with an inclined bottom plate (43). The lowest point of the bottom plate is adapted to the drying box discharge outlet to facilitate discharge after drying.

3. The plastic particle drying apparatus according to claim 2, wherein The bottom plate (43) is surrounded by a heat-conducting isolation net (44) on the side near the discharge port of the drying box. There is a gap between the heat-conducting isolation net and the side wall of the drying box. Multiple drying lamps are evenly installed in the gap. At least one drying lamp is also suspended and installed on the top of the inner side of the drying box. The drying lamps suspended on the top of the inner side of the drying box are also surrounded by a heat-conducting isolation net to separate the drying lamps from the inside of the drying box.

4. The plastic particle drying apparatus according to claim 2, characterized in that, The second stirring shaft (5) penetrates the bottom plate (43). The end of the second stirring shaft located below the bottom plate is connected to the motor. The part of the second stirring shaft located above the bottom plate is connected to an extension arm (51) perpendicular to the second stirring shaft. Multiple second stirring blades (52) pointing towards the bottom plate are evenly installed on the extension arm.

5. The plastic particle drying apparatus according to claim 1, wherein The preheating tank (1) is an axially inclined cylinder with a tank inlet (11) at the top of the bottom end and a tank outlet (12) at the bottom of the high end, pointing towards the feed end of the conveyor belt.

6. The plastic particle drying apparatus according to claim 5, wherein The first stirring shaft (2) is arranged along the axial direction of the preheating tank, and a spiral first stirring blade (21) is arranged around the outside of the first stirring shaft. The first stirring blade is misaligned with the hot air hole.

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