PET particle heating and drying device

Abstract

The utility model belongs to the technical field of heating and drying, and particularly relates to a PET particle heating and drying device which comprises a drying tank, a feeding pipe and a discharging pipe, the feeding pipe is arranged at the top of the drying tank, the discharging pipe is connected to the bottom of the drying tank in a communicated mode, an inserting hole is formed in the top of the drying tank in a penetrating mode, a bearing is arranged on the inner wall of the inserting hole, and the inserting hole is communicated with the feeding pipe. An inclined pipe type material guiding pipe is rotationally arranged in an inner cavity of the bearing, the top of the inclined pipe type material guiding pipe is rotationally connected with a feeding pipe through a rotary connecting ring, a driven gear is welded to the surface of the top of the inclined pipe type material guiding pipe, a driving motor is installed on the surface of the top of the drying tank, and the power output end of the driving motor is connected with a driving gear; the driving gear is in meshed connection with the driven gear; during feeding, the inclined pipe type material guide pipe rotates at the top of the drying tank, raw materials spirally fall down in the drying tank, the contact area of the raw materials and hot air can be increased, and therefore the drying effect on the raw materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating and drying technology, specifically a heating and drying device for PET particles. Background Technology

[0002] Polyethylene terephthalate (PET) is a semi-crystalline thermoplastic with excellent comprehensive properties, including heat resistance, electrical insulation, abrasion resistance, creep resistance, and chemical resistance. PET has abundant and inexpensive raw materials for synthesis, and its synthesis consumption is the lowest among the five major engineering plastics. Therefore, PET engineering plastics have a significant price advantage compared to other general-purpose engineering plastics, possess great market potential, and can partially replace engineering plastics such as PBT and PA.

[0003] PET particles are the raw material for bottle cap processing. Before processing, the PET particles need to be cleaned and then heated and dried. In the existing PET particle drying cylinder, the PET particles are directly injected into the drying tank through the feed pipe. The PET particles fall quickly during feeding, resulting in less contact time between the PET particles and the hot air, which makes it impossible to dry the PET particles quickly. To solve the above problems, this application proposes a PET particle heating and drying device. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a PET particle heating and drying device. During feeding, the inclined tube guide tube rotates at the top of the drying tank, causing the raw material to fall spirally inside the drying tank. This increases the contact area between the raw material and the hot air, thereby improving the drying effect of the raw material and solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To solve the above technical problems, this utility model provides a PET particle heating and drying device, including a drying tank, a feed pipe and a discharge pipe. The feed pipe is located at the top of the drying tank, and the discharge pipe is connected to the bottom of the drying tank. A through-hole is provided at the top of the drying tank, and a bearing is provided on the inner wall of the through-hole. An inclined tube is rotatably provided in the inner cavity of the bearing, and the top of the inclined tube is rotatably connected to the feed pipe through a rotating connecting ring.

[0008] A driven gear is welded to the top surface of the inclined tube-type feed pipe, and a drive motor is installed on the top surface of the drying tank. The power output end of the drive motor is connected to the drive gear, and the drive gear meshes with the driven gear.

[0009] A resistance wire heater is installed on the side wall surface of the drying tank, and an air intake fan is installed on the surface of the resistance wire heater.

[0010] Preferably, a filter cylinder is installed on the side wall of the drying tank, and the bottom of the filter cylinder has a tapered structure.

[0011] Preferably, a filter element is installed inside the filter cartridge, and the filter element has a cylindrical structure.

[0012] Preferably, the top of the filter cartridge is connected to the drying tank via an air inlet pipe, and the end of the air inlet pipe is inserted into the top of the filter element.

[0013] Preferably, a circulating air pump is installed on the air inlet pipe, and the circulating air pump is used for gas circulation in the drying tank.

[0014] Preferably, a slag discharge pipe is conductively connected to the bottom of the filter cylinder, and the slag discharge pipe is inserted into the bottom of the filter cylinder.

[0015] Preferably, the filter cartridge has an exhaust pipe connected to its side wall, and the end of the exhaust pipe is connected to the drying tank.

[0016] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] 1. In this utility model, during the injection of raw materials, the drive motor drives the driven gear through the drive gear. The driven gear drives the inclined tube guide pipe to rotate in the bearing cavity. The top of the inclined tube guide pipe is connected to the feed pipe through a rotating connecting ring. Thus, the inclined tube guide pipe can rotate at the top of the drying tank during feeding, causing the raw material to fall spirally in the drying tank. This increases the contact area between the raw material and the hot air, thereby improving the drying effect of the raw material.

[0018] 2. In this utility model, air is drawn out of the drying tank by a circulating air pump and injected into the filter element in the filter cartridge through the air inlet pipe. The filter element can filter impurities and dust in the air. The filtered air is then discharged back into the drying tank through the exhaust pipe. The purification of raw materials can be achieved through the circulation of gas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a PET particle heating and drying device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a PET particle heating and drying device according to this utility model from another perspective;

[0021] Figure 3 This is a cross-sectional structural diagram of a PET particle heating and drying device according to the present invention;

[0022] Figure 4 This is a schematic diagram of the inclined tube drive structure of a PET particle heating and drying device according to the present invention.

[0023] Figure label:

[0024] 1. Drying tank; 2. Feed pipe; 3. Discharge pipe; 4. Rotary connecting ring; 5. Inclined tube guide pipe; 6. Bearing; 7. Driven gear; 8. Drive motor; 9. Drive gear; 10. Resistance wire heater; 11. Air intake fan; 12. Filter cartridge; 13. Slag discharge pipe; 14. Air inlet pipe; 15. Exhaust pipe; 16. Filter element; 17. Circulating air pump. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] like Figure 1-4 As shown, the present invention proposes a PET particle heating and drying device, including a drying tank 1, a feed pipe 2 and a discharge pipe 3. The feed pipe 2 is located at the top of the drying tank 1, and the discharge pipe 3 is connected to the bottom of the drying tank 1. The top of the drying tank 1 has a through-hole, and the inner wall of the through-hole is provided with a bearing 6. The inner cavity of the bearing 6 is rotatably provided with an inclined tube type guide pipe 5. The top of the inclined tube type guide pipe 5 is rotatably connected to the feed pipe 2 through a rotating connecting ring 4.

[0027] The inclined tube-type feed pipe 5 is welded with a driven gear 7 on its top surface, and a drive motor 8 is installed on the top surface of the drying tank 1. The power output end of the drive motor 8 is connected to a drive gear 9, and the drive gear 9 is meshed with the driven gear 7.

[0028] A resistance wire heater 10 is installed on the side wall surface of the drying tank 1, and an air intake fan 11 is installed on the surface of the resistance wire heater 10.

[0029] It should be noted that PET particles are injected into the drying tank 1 through the feed pipe 2, and air is injected into the drying tank 1 by the air intake fan 11. The air is heated by the resistance wire heater 10. During the injection process, the drive motor 8 drives the driven gear 7 through the drive gear 9. The driven gear 7 drives the inclined tube guide pipe 5 to rotate in the inner cavity of the bearing 6. The top of the inclined tube guide pipe 5 is rotatably connected to the feed pipe 2 through the rotating connecting ring 4. Thus, the inclined tube guide pipe 5 can rotate at the top of the drying tank 1 during feeding, so that the raw material falls spirally in the drying tank 1, which can increase the contact area between the raw material and the hot air, thereby improving the drying effect of the raw material.

[0030] In this embodiment, as Figure 3 As shown, a filter cylinder 12 is installed on the side wall of the drying tank 1. The bottom of the filter cylinder 12 has a constricted structure. A filter element 16 is installed in the inner cavity of the filter cylinder 12. The filter element 16 has a cylindrical structure. The top of the filter cylinder 12 is connected to the drying tank 1 through an air inlet pipe 14, and the end of the air inlet pipe 14 is inserted into the top of the filter element 16. An exhaust pipe 15 is connected to the side wall of the filter cylinder 12, and the end of the exhaust pipe 15 is connected to the drying tank 1.

[0031] It should be noted that the air in the drying tank 1 is extracted by the circulating air pump 17 and injected into the filter element 16 in the filter cartridge 12 through the air inlet pipe 14. The filter element 16 can filter impurities and dust in the air. The filtered air is then discharged back into the drying tank 1 through the exhaust pipe 15. The purification of the raw materials can be achieved through the circulation of the gas.

[0032] In this embodiment, as Figure 3 As shown, a circulating air pump 17 is installed on the air inlet pipe 14, and the circulating air pump 17 is used for gas circulation in the drying tank 1.

[0033] It should be noted that the circulating air pump 17 is used for gas circulation in the drying tank 1, which can remove impurities from the raw materials.

[0034] In this embodiment, as Figure 4 As shown, a slag discharge pipe 13 is conductively connected to the bottom of the filter cylinder 12, and the slag discharge pipe 13 is inserted into the bottom of the filter cylinder 12.

[0035] It should be noted that after the slag discharge valve is opened, impurities can be discharged through the slag discharge pipe 13.

[0036] The working principle and usage process of this utility model: PET particles are injected into the drying tank 1 through the feed pipe 2. The air intake fan 11 injects air into the drying tank 1, and the air is heated by the resistance wire heater 10. During the injection process, the drive motor 8 drives the driven gear 7 through the drive gear 9. The driven gear 7 drives the inclined tube guide pipe 5 to rotate in the inner cavity of the bearing 6. The top of the inclined tube guide pipe 5 is rotatably connected to the feed pipe 2 through the rotating connecting ring 4, so that the inclined tube guide pipe 5 can rotate at the top of the drying tank 1 during feeding, causing the raw material to spiral inside the drying tank 1. The falling air increases the contact area between the raw material and the hot air, thereby improving the drying effect. The dried raw material can be discharged through the discharge pipe 3. The air in the drying tank 1 is extracted by the circulating air pump 17 and injected into the filter element 16 in the filter cartridge 12 through the air inlet pipe 14. The filter element 16 can filter impurities and dust in the air. The filtered air is discharged back into the drying tank 1 through the exhaust pipe 15. The circulation of gas can remove impurities from the raw material. The filtered impurities are collected in the filter element 16. After the slag discharge valve is opened, the impurities can be discharged through the slag discharge pipe 13.

[0037] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims or their equivalents.

Claims

1. A PET particle heating and drying device, comprising a drying tank (1), a feed pipe (2), and a discharge pipe (3), wherein the feed pipe (2) is disposed at the top of the drying tank (1), and the discharge pipe (3) is conductively connected to the bottom of the drying tank (1), characterized in that, The top of the drying tank (1) is provided with a through-hole, and the inner wall of the through-hole is provided with a bearing (6). The inner cavity of the bearing (6) is provided with an inclined tube-type guide pipe (5). The top of the inclined tube-type guide pipe (5) is rotatably connected to the feed pipe (2) through a rotating connecting ring (4). The inclined tube guide pipe (5) has a driven gear (7) welded to its top surface. The drying tank (1) has a drive motor (8) installed on its top surface. The power output end of the drive motor (8) is connected to a drive gear (9). The drive gear (9) meshes with the driven gear (7). A resistance wire heater (10) is installed on the side wall surface of the drying tank (1), and an air intake fan (11) is installed on the surface of the resistance wire heater (10).

2. The PET particle heating and drying apparatus according to claim 1, characterized in that, The drying tank (1) is equipped with a filter cylinder (12) on its side wall, and the bottom of the filter cylinder (12) has a tapered structure.

3. The PET particle heating and drying apparatus according to claim 2, characterized in that, The filter cartridge (12) has a filter element (16) installed inside its cavity. The filter element (16) has a cylindrical structure.

4. The PET particle heating and drying apparatus according to claim 3, characterized in that, The top of the filter cartridge (12) is connected to the drying tank (1) via an air inlet pipe (14), and the end of the air inlet pipe (14) is inserted into the top of the filter element (16).

5. The PET particle heating and drying apparatus according to claim 4, characterized in that, A circulating air pump (17) is installed on the air inlet pipe (14), and the circulating air pump (17) is used for gas circulation in the drying tank (1).

6. The PET particle heating and drying apparatus according to claim 5, characterized in that, The bottom of the filter cylinder (12) is connected to a slag discharge pipe (13), which is inserted into the bottom of the filter cylinder (12).

7. The PET particle heating and drying apparatus according to claim 6, characterized in that, The filter cartridge (12) has an exhaust pipe (15) connected to its side wall, and the end of the exhaust pipe (15) is connected to the drying tank (1).

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