Energy-saving drying device for PET bottle preform production

Abstract

The utility model relates to the technical field of PET bottle preform production, and discloses an energy-saving drying device for PET bottle preform production, which comprises a support, a supporting pipe is welded at the top of the support, a waste heat recovery pipe is fixedly arranged at the air inlet end of the supporting pipe, an exhaust pipe is fixedly arranged at the air outlet end of the supporting pipe, the surface of the supporting pipe is rotatably connected with a drying barrel, and the surface of the drying barrel is rotatably connected with an exhaust pipe. A plurality of stirring rods are welded to the bottom of the supporting pipe, and a plurality of guide pipes are fixedly connected to the top of the supporting pipe; waste heat generated by the injection molding machine can be collected through the waste heat recovery pipe, the waste heat can be conveyed into the drying barrel through the guide pipe, materials can be prevented from entering the guide pipe through the arrangement of the elbow, the PET materials in the drying barrel can be dried, recycling of energy can be achieved, the effect of saving energy can be achieved, the production cost is reduced, and the production efficiency is improved. The exhaust pipe is capable of discharging the water-containing gas to the exhaust gas treatment pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of PET preform production, in particular to an energy-saving drying device for PET preform production. Background Technique

[0002] PET preforms are typical injection-molded products, which are convenient for transportation. They are mostly made of plastic materials, have uniform texture, and good insulation properties. They are intermediate products of plastic bottles and oil drums. When producing preforms, it is necessary to dry PET raw materials to remove moisture in PET.

[0003] The "PET chip drying hopper" disclosed in its application number "202322647197.5" "comprises a fixed frame, a stirring component is arranged inside the fixed frame, the stirring component includes a hopper body, a fixed shell is fixedly connected to the upper part of the hopper body, and a motor is fixedly connected to the right side of the fixed shell. In the utility model, the PET chip drying hopper can uniformly stir PET chips, thereby improving the drying effect of the PET chip drying hopper, increasing the use effect of PET chips. At the same time, the PET chip drying hopper can clean the inner wall of the hopper while stirring, thereby reducing the adhesion of PET chips to the inner wall of the hopper during drying and improving the service life of the hopper".

[0004] However, the above method still has the following defects: The hot air blower can heat and dry PET chips, but it is necessary for the hot air blower to continuously deliver hot air, which increases the input of energy consumption and raises the production cost. The PET chips can be stirred by the rotating rod and the stirring rod, but it is difficult for the stirring rod to contact the chips at the bottom of the hopper, which easily causes uneven heating of the chips at the bottom of the hopper. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an energy-saving drying device for PET preform production, which has the advantages of good energy-saving effect and reduced production cost, and solves the problems raised in the above background technique.

[0006] The utility model provides the following technical scheme: An energy-saving drying device for PET preform production, comprising a support, a support pipe is welded to the top of the support, a waste heat recovery pipe is fixedly arranged at the air inlet end of the support pipe, an exhaust pipe is fixedly arranged at the air outlet end of the support pipe, a drying barrel is rotatably connected to the surface of the support pipe, several stirring rods are welded to the bottom of the support pipe, several conduits are fixedly connected to the top of the support pipe, an elbow is fixedly connected to the air outlet end of the conduit, a support ring is fixedly arranged at one end of the drying barrel, a driven wheel is fixedly arranged at the other end of the drying barrel, a driving component is arranged on one side of the support, and a discharging component is arranged on the inner wall of the bottom end of the support.

[0007] As an optimal technical solution of the present invention, bearings are provided in the middle of the support ring and the middle of the driven wheel, and both sides of the support tube are rotatably connected to the support ring and the driven wheel respectively through bearings. Several support rods are welded to one side of the support ring and one side of the driven wheel, and one end of the support rod is fixedly connected to the drying barrel.

[0008] As an optimal technical solution of the present invention, pipe grooves are provided in the middle of both sides of the drying barrel, the support pipes are connected with the pipe grooves through insertion, the interior of the pipe grooves is snap-connected with sealing rings, and the sealing rings are sleeved with the surface of the support pipes.

[0009] As an optimal technical solution of the present invention, the driving assembly includes a mounting seat and a transmission belt, one side of the mounting seat is fixedly connected to the bottom of one side of the support, a motor is fixedly installed on the surface of the mounting seat, the output shaft of the motor is fixedly connected to a driving wheel, and the driving wheel is connected to the driven wheel through a transmission belt.

[0010] As an optimal technical solution of the present invention, a protective cover is provided inside the support, the driving wheel and the transmission belt are both located inside the protective cover, positioning strips are fixed on both sides of the protective cover, and one side of the positioning strip is fixedly connected to the inner wall of one side of the support by screws.

[0011] As an optimal technical solution of the present invention, the discharge assembly includes a slide plate, baffles are fixed on both sides of the top of the slide plate, vertical plates are fixed on both sides of the bottom of the slide plate, a mounting plate is fixed on the bottom of the vertical plate, and the bottom end of the mounting plate is fixedly connected to the inner wall of the bottom end of the support by screws.

[0012] As a preferred technical solution of the present invention, a reinforcement plate is fixedly provided on one side of the bottom end of the slide plate, and both sides of the reinforcement plate are fixedly connected to the top of one side of the two vertical plates respectively.

[0013] As an optimal technical solution of the present invention, the stirring rod and the conduit are both located inside the drying barrel, a material port is provided on the top of the drying barrel, a barrel cover is hinged on one side of the material port, and a buckle for limiting the barrel cover is installed on the other side of the material port.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The waste heat generated by the injection molding machine can be collected through the waste heat recovery pipe and transported to the drying barrel through the conduit. The setting of the elbow can prevent the material from entering the conduit, so that the PET material inside the drying barrel can be dried, which can realize the reuse of energy, save energy, and reduce production costs. The exhaust pipe can discharge the water-containing gas into the exhaust gas treatment pipeline to prevent water vapor from accumulating in the drying barrel.

[0016] 2. Driving the driven wheel through the driving component can drive the drying barrel to rotate. The drying barrel and the stirring rod inside it can tumble and stir the materials, avoiding the generation of stirring blind spots during the stirring process, enabling the PET materials to be evenly heated, and guiding the dried PET materials through the discharging component for convenient material discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is one of the structural schematic diagrams of the present utility model;

[0018] Figure 2 is another structural schematic diagram of the present utility model;

[0019] Figure 3 is the exploded structural schematic diagram of the present utility model;

[0020] Figure 4 is the structural schematic diagram inside the drying barrel of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the discharging component of the present utility model.

[0022] In the figure: 1, support; 2, support pipe; 3, waste heat recovery pipe; 4, exhaust pipe; 5, sealing ring; 6, drying barrel; 7, driven wheel; 8, support ring; 9, driving component; 901, mounting seat; 902, motor; 903, driving wheel; 904, transmission belt; 10, bearing; 11, support rod; 12, conduit; 13, elbow; 14, material inlet; 15, stirring rod; 16, barrel cover; 17, discharging component; 1701, slide plate; 1702, stop bar; 1703, vertical plate; 1704, mounting plate; 1705, reinforcement plate; 18, protective cover; 19, positioning bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 5, An energy-saving drying device for PET preform production, including a support 1. A support pipe 2 is welded to the top of the support 1. A waste heat recovery pipe 3 is fixedly provided at the air inlet end of the support pipe 2, and an exhaust pipe 4 is fixedly provided at the air outlet end of the support pipe 2. A drying barrel 6 is rotatably connected to the surface of the support pipe 2. The drying barrel 6 can be supported by the support pipe 2. A plurality of stirring rods 15 are welded to the bottom of the support pipe 2. A plurality of conduits 12 are fixedly connected to the top of the support pipe 2. The air outlet end of the conduit 12 is fixedly connected to an elbow 13. Through the waste heat recovery pipe 3, the waste heat generated by the injection molding machine can be collected, and the waste heat can be conveyed into the drying barrel 6 through the conduit 12, so as to dry the PET material inside the drying barrel 6, which can realize the reuse of energy and achieve the effect of energy saving. The setting of the elbow 13 can prevent the material from entering the inside of the conduit 12. A support ring 8 is fixedly provided at one end of the drying barrel 6, and a driven wheel 7 is fixedly provided at the other end of the drying barrel 6. A driving assembly 9 for driving the driven wheel 7 to rotate is provided on one side of the support 1. By driving the driven wheel 7 through the driving assembly 9, the drying barrel 6 can be driven to rotate. The drying barrel 6 and the stirring rods 15 inside it can tumble and stir the material. A discharging assembly 17 for guiding the material is provided on the inner wall of the bottom end of the support 1;

[0025] In this embodiment, preferably, the driving assembly 9 includes a mounting seat 901 and a transmission belt 904. One side of the mounting seat 901 is fixedly connected to the bottom of one side of the support 1. A motor 902 is fixedly installed on the surface of the mounting seat 901. The output shaft of the motor 902 is fixedly connected to a driving wheel 903. The driving wheel 903 is in transmission connection with the driven wheel 7 through the transmission belt 904. The motor 902 can be fixedly installed through the mounting seat 901. When the motor 902 drives the driving wheel 903 to rotate, the driving wheel 903 can drive the driven wheel 7 to rotate through the transmission belt 904, and the driven wheel 7 can drive the drying barrel 6 to rotate. A protective cover 18 is provided inside the support 1. The driving wheel 903 and the transmission belt 904 are both located inside the protective cover 18. Positioning strips 19 are fixedly provided on both sides of the protective cover 18. One side of the positioning strip 19 is fixedly connected to the inner wall of one side of the support 1 through screws. The protective cover 18 can be fixed through the positioning strip 19, and the protective cover 18 can provide protection for the driving wheel 903 and the transmission belt 904;

[0026] In this embodiment, preferably, the discharging assembly 17 includes a sliding plate 1701. On both sides of the top end of the sliding plate 1701, retaining bars 1702 are fixedly provided. On both sides of the bottom end of the sliding plate 1701, vertical plates 1703 are fixedly provided. At the bottom end of the vertical plate 1703, a mounting plate 1704 is fixedly provided. The bottom end of the mounting plate 1704 is fixedly connected to the inner wall of the bottom end of the support 1 by screws. The sliding plate 1701 can guide the dried PET material, facilitating the discharge of the material. The retaining bars 1702 can prevent the material from falling off both sides of the sliding plate 1701. On one side of the bottom end of the sliding plate 1701, a reinforcing plate 1705 is fixedly provided. The two sides of the reinforcing plate 1705 are respectively fixedly connected to the top of one side of the two vertical plates 1703. The reinforcing plate 1705 can reinforce between the vertical plate 1703 and the sliding plate 1701;

[0027] In this embodiment, preferably, bearings 10 are provided in the middle of both the support ring 8 and the driven wheel 7. On both sides of the support tube 2, it is respectively rotatably connected to the support ring 8 and the driven wheel 7 through the bearings 10. The bearings 10 can support the support ring 8 and the driven wheel 7, and can ensure their rotational movement. A plurality of support rods 11 are welded to one side of both the support ring 8 and the driven wheel 7. One end of the support rod 11 is fixedly connected to the drying barrel 6. The support ring 8 and the driven wheel 7 can support the drying barrel 6 through the support rods 11. Through holes are respectively provided in the middle of both sides of the drying barrel 6. The support tube 2 is inserted into the through holes. A sealing ring 5 is snap-fitted inside the through holes. The sealing ring 5 is sleeved on the surface of the support tube 2. The through holes can allow the support tube 2 to pass through, and the sealing ring 5 can seal between the through holes and the support tube 2;

[0028] In this embodiment, preferably, both the stirring rod 15 and the conduit 12 are located inside the drying barrel 6. A material inlet 14 is provided at the top of the drying barrel 6. One side of the material inlet 14 is hinged with a barrel cover 16. On the other side of the material inlet 14, a buckle for limiting the barrel cover 16 is installed. The barrel cover 16 can be closed through the buckle, and the barrel cover 16 can prevent the material from falling.

[0029] During use, first connect the waste heat recovery pipe 3 to the heat discharge port of the PET preform injection molding machine, then connect the exhaust pipe 4 to the waste gas treatment pipeline, and then open the barrel cover 16 to supply PET raw materials into the drying barrel 6. The elbow 13 can prevent the material from entering the inside of the conduit 12. Finally, close the barrel cover 16. The waste heat recovery pipe 3 can collect the waste heat generated by the injection molding machine and can transport the waste heat to the inside of the drying barrel 6 through the conduit 12, so as to dry the PET material inside the drying barrel 6. The exhaust pipe 4 can discharge the water-containing gas to the waste gas treatment pipeline, preventing water vapor from accumulating inside the drying barrel 6;

[0030] During the process of drying the material, the staff drives the driving wheel 903 to rotate through the motor 902 of the driving component 9. The driving wheel 903 can drive the driven wheel 7 through the transmission belt 904. The driven wheel 7 can drive the drying barrel 6 to rotate on the support pipe 2. The drying barrel 6 and the stirring rod 15 inside it can tumble and stir the material, avoiding the generation of stirring blind spots during the stirring process, and enabling the PET material to be evenly heated. After the material is dried, the barrel cover 16 is rotated to the bottom of the drying barrel 6, and then the barrel cover 16 is opened. The dried PET material falls from the material port 14 onto the slide plate 1701 of the discharging component 17. The slide plate 1701 can guide the material, and then the material can be discharged. The blocking strip 1702 can prevent the material from falling from both sides of the slide plate 1701.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving drying device for PET preform production, comprising a support (1), characterized in that: A support pipe (2) is welded to the top of the support (1). A waste heat recovery pipe (3) is fixedly arranged at the air inlet end of the support pipe (2), and an exhaust pipe (4) is fixedly arranged at the air outlet end of the support pipe (2). A drying barrel (6) is rotatably connected to the surface of the support pipe (2). A plurality of stirring rods (15) are welded to the bottom of the support pipe (2). A plurality of conduits (12) are fixedly connected to the top of the support pipe (2). The air outlet end of the conduit (12) is fixedly connected to an elbow (13). A support ring (8) is fixedly arranged at one end of the drying barrel (6), and a driven wheel (7) is fixedly arranged at the other end of the drying barrel (6). A driving assembly (9) is arranged on one side of the support (1), and a discharging assembly (17) is arranged on the inner wall of the bottom end of the support (1).

2. The energy-saving drying device for PET preform production according to claim 1, wherein: Bearings (10) are arranged in the middle of the support ring (8) and the middle of the driven wheel (7). Both sides of the support pipe (2) are rotatably connected to the support ring (8) and the driven wheel (7) respectively through the bearings (10). A plurality of support rods (11) are welded to one side of the support ring (8) and one side of the driven wheel (7). One end of the support rod (11) is fixedly connected to the drying barrel (6).

3. The energy-saving drying device for PET preform production according to claim 1, characterized in that: Tube grooves are formed in the middle of both sides of the drying barrel (6). The support pipe (2) is inserted into the tube grooves. A sealing ring (5) is snap-fitted inside the tube grooves, and the sealing ring (5) is sleeved on the surface of the support pipe (2).

4. The energy-saving drying device for PET preform production according to claim 1, characterized in that: The driving assembly (9) includes a mounting seat (901) and a transmission belt (904). One side of the mounting seat (901) is fixedly connected to the bottom of one side of the support (1). A motor (902) is fixedly installed on the surface of the mounting seat (901). The output shaft of the motor (902) is fixedly connected to a driving wheel (903). The driving wheel (903) is in transmission connection with the driven wheel (7) through the transmission belt (904).

5. The energy-saving drying device for PET preform production according to claim 4, characterized in that: A protective cover (18) is arranged inside the support (1). The driving wheel (903) and the transmission belt (904) are both located inside the protective cover (18). Positioning strips (19) are fixedly arranged on both sides of the protective cover (18). One side of the positioning strip (19) is fixedly connected to the inner wall of one side of the support (1) through screws.

6. The energy-saving drying device for PET preform production according to claim 1, wherein: The discharging assembly (17) includes a sliding plate (1701). Bars (1702) are fixedly arranged on both sides of the top end of the sliding plate (1701). Vertical plates (1703) are fixedly arranged on both sides of the bottom end of the sliding plate (1701). A mounting plate (1704) is fixedly arranged at the bottom end of the vertical plate (1703). The bottom end of the mounting plate (1704) is fixedly connected to the inner wall of the bottom end of the support (1) through screws.

7. The energy-saving drying device for PET preform production according to claim 6, characterized in that: A reinforcing plate (1705) is fixedly arranged on one side of the bottom end of the sliding plate (1701). Both sides of the reinforcing plate (1705) are respectively fixedly connected to the top of one side of the two vertical plates (1703).

8. The energy-saving drying device for PET preform production according to claim 1, characterized in that: The stirring rod (15) and the conduit (12) are both located inside the drying barrel (6). A material inlet (14) is provided at the top of the drying barrel (6). A barrel cover (16) is hinged to one side of the material inlet (14), and a buckle for limiting the barrel cover (16) is installed on the other side of the material inlet (14).

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