Dynamic efficient energy-saving drying machine based on PET

Abstract

The invention relates to the field of industrial plastic drying, and discloses a PET-based dynamic efficient energy-saving drying machine which comprises a supporting frame, the top side of the supporting frame is fixedly connected with a drying cylinder through two supporting plates, the left side of the drying cylinder is fixedly connected with a driving mechanism, and the interior of the drying cylinder is fixedly connected with a screening mechanism; a drying mechanism is fixedly connected to the bottom end of the supporting frame, a quantifying mechanism is fixedly connected to the left side of the drying cylinder, a recycling mechanism is fixedly connected to the top side of the drying cylinder, the driving mechanism comprises a side plate, and the right side of the side plate is fixedly connected to the left side of the drying cylinder; the top side of the side plate is fixedly connected with a connecting plate through a driving assembly. The two connecting plates are driven to slide through the sliding frame, finally the three bottom plates are driven to slide, the bottom plates are used for providing autorotation support for the limiting disc, the iron attraction frame can rotate in a left-right reciprocating sliding mode at the same time, iron in PET raw materials is cleaned, and therefore the product quality is improved.

Description

Technical Field

[0001] The invention relates to the field of industrial plastic drying, and in particular to a dynamic, high-efficiency and energy-saving dryer based on PET. Background Art

[0002] PET, commonly referred to as polyethylene terephthalate, is a commonly used thermoplastic polyester material. It is transparent, lightweight, durable, and has excellent heat and chemical resistance. It is widely used in packaging (such as beverage bottles and food packaging), electronics, healthcare, construction, and automotive applications. PET is a highly hygroscopic plastic and requires drying to remove moisture before processing. Otherwise, moisture can cause defects such as bubbles and silver streaks during processing, affecting product quality. Furthermore, PET processing requires stringent moisture content requirements, typically requiring it to be reduced to very low levels, such as below 0.02%. Conventional drying equipment is unable to meet these requirements, requiring a high-efficiency dryer for precise drying.

[0003] The raw materials are fed into a vibrating hopper, and the material level sensor controls the feed amount; then the vibration is started, and hot air is used for pre-crystallization to crystallize the raw materials; then the air below the dew point is mixed with high temperature of ℃ for deep drying; after meeting the standards, the materials are automatically discharged to subsequent equipment, and at the same time, the waste heat recovery system preheats the fresh air.

[0004] However, some existing dynamic, high-efficiency, and energy-saving dryers for PET can introduce ferromagnetic impurities such as iron filings and iron dust into the PET raw materials during production, transportation, and storage due to equipment wear and environmental pollution. If these impurities enter the dryer and subsequent processing equipment, the iron-containing PET raw materials can be mixed into the finished product during subsequent processing (such as injection molding and blow molding), affecting product quality. To address these shortcomings, a dynamic, high-efficiency, and energy-saving dryer for PET has been proposed. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a dynamic, high-efficiency and energy-saving dryer based on PET, which solves the problem in the existing technology that some dynamic, high-efficiency and energy-saving dryers based on PET still have iron filings impurities in the raw materials during use, affecting the quality of product processing and production.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dynamic, high-efficiency and energy-saving dryer based on PET, comprising a support frame, the top side of the support frame is fixedly connected to a drying cylinder through two support plates, the left side of the drying cylinder is fixedly connected to a driving mechanism, the interior of the drying cylinder is fixedly connected to a screening mechanism, the bottom end of the support frame is fixedly connected to a drying mechanism, the left side of the drying cylinder is fixedly connected to a quantitative mechanism, the top side of the drying cylinder is fixedly connected to a recycling mechanism, the driving mechanism comprises a side plate, the right side of the side plate is fixedly connected to the left side of the drying cylinder, the top side of the side plate is fixedly connected to a connecting plate through a driving assembly, the left end of the connecting plate is fixedly connected to a fixed column, the outside of the fixed column is slidably connected to a sliding frame, the outside of the sliding frame is fixedly connected to multiple bottom plates through two connecting plates, the inside of the bottom plate is rotatably connected to multiple limit plates, and the bottom side of the limit plate is fixedly connected to an iron magnet.

[0007] Preferably, the recovery mechanism includes two right-angle tubes, the front ends of the two right-angle tubes are fixedly connected to the top of the drying cylinder, the bottom ends of the two right-angle tubes are fixedly connected to a connecting tube, the bottom ends of the connecting tubes are fixedly connected to an air inlet pipe, the bottom end of the air inlet pipe is fixedly connected to a cyclone separator, the left end of the cyclone separator is fixedly connected to an air outlet pipe, the bottom end of the air outlet pipe is fixedly connected to a bifurcated pipe, and the bottom end of the cyclone separator is fixedly connected to a discharge pipe.

[0008] Preferably, the screening mechanism comprises a screening plate, the exterior of the screening plate is fixedly connected to the interior of the drying cylinder, and the bottom side of the screening plate is fixedly connected to a force-bearing plate.

[0009] Preferably, the drying mechanism includes a fan, the outside of the fan is fixedly connected to the bottom end of the support frame through a fixing frame, the rear side of the fan is fixedly connected to a filter cartridge, the bottom right end of the fan is fixedly connected to an air cooler through a pipe, the top right end of the fan is fixedly connected to a heater through a pipe, the right end of the heater is fixedly connected to a heating frame through a pipe, the front and rear ends of the heating frame are fixedly connected to two heating pipes, the right end of the air cooler is fixedly connected to a cooling frame through a pipe, and the front and rear ends of the cooling frame are fixedly connected to two cooling pipes.

[0010] Preferably, the top ends of the plurality of heating tubes are fixedly connected to the front and rear ends of the drying cylinder, the top ends of the two cooling tubes are fixedly connected to the front and rear ends of the drying cylinder, and the front end of the bifurcated tube is fixedly connected to the inside of the heating frame.

[0011] Preferably, the quantitative mechanism includes a feed frame, the right end of the feed frame is fixedly connected to the left end of the drying cylinder, the front side of the feed frame is fixedly connected to a protective box, the interior of the protective box is fixedly connected to motor 2, the driving end of motor 2 is fixedly connected to a plurality of quantitative plate shafts through a rotating shaft, the interior of the feed frame is fixedly connected to a plurality of inclined plates, the rear end of the rotating shaft is fixedly connected to a driving wheel, the outside of the driving wheel is provided with a belt, the front end of the air outlet pipe is fixedly connected to a fixed plate, the interior of the fixed plate is rotatably connected to a convex column, the front end of the convex column is fixedly connected to a driven wheel, and the rear end of the convex column is fixedly connected to a fan plate.

[0012] Preferably, the drive assembly includes motor 1, the bottom side of motor 1 is fixedly connected to the top side of the side plate, the driving end of motor 1 is fixedly connected to a rotating shaft, the outside of the rotating shaft is fixedly connected to an eccentric wheel, the inside of the eccentric wheel is slidingly connected to two transmission columns, the far sides of the two transmission columns are fixedly connected to a transmission plate, and the right side of the transmission plate is fixedly connected to a knocking plate.

[0013] Preferably, the right side of the knocking plate contacts the left side of the force-bearing plate, and limit rings are provided on both the upper and lower sides of the eccentric wheel, and the interior of the limit ring is slidably connected to the exterior of the transmission column.

[0014] Preferably, the outer portions of the two connecting plates are slidably connected to the inner portion of the left end of the drying cylinder, and the top end of the rotating shaft is fixedly connected to the inner portion of the right end of the connecting plate.

[0015] Preferably, the outer portion of the driven wheel is sleeved inside the belt, and the front end of the air outlet pipe is fixedly connected to the rear end of the feed frame.

[0016] The present invention provides a dynamic, high-efficiency, energy-saving dryer based on PET. It has the following beneficial effects: 1. The present invention drives two connecting plates to slide through a sliding frame, and finally drives three bottom plates to slide, and uses the bottom plates to provide rotational support for the limit plate, so that the iron absorption frame can slide back and forth and rotate at the same time, and clean the iron in the PET raw material, thereby improving product quality.

[0017] 2. The present invention enters the interior of the connecting pipe through two right-angle pipes, and then enters the interior of the cyclone separator through the air inlet pipe to filter the waste heat, filter out impurities and flow out through the discharge pipe, while the hot air enters the interior of the feed frame through the air outlet pipe to preheat the PET raw material, thereby improving the effect of waste heat recovery and utilization.

[0018] 3. The application can slow down the speed of the material through the inclined plates during the rotation of the rotating shaft, and then drive the rotating shaft to rotate through the starting motor II, and then drive the multiple quantitative plate shafts to rotate, so that the speed of the PET raw material can be controlled, the PET raw material can be prevented from accumulating, and the heat exchange with the waste heat can be improved, so that the crystallization efficiency of the waste heat is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the application; Figure 2 It is a sliding frame schematic diagram of the application; Figure 3 It is an air outlet pipe schematic diagram of the application; Figure 4 It is a force plate schematic diagram of the application; Figure 5 It is a connection plate schematic diagram of the application; Figure 6 It is Figure 5 It is an enlarged view of A in the middle; Figure 7 It is a protective box schematic diagram of the application; Figure 8 It is Figure 7 It is an enlarged view of B in the middle; Figure 9 It is a convex column schematic diagram of the application; Figure 10 It is a heating frame schematic diagram of the application.

[0020] 1, support frame; 2, support plate; 3, drying cylinder; 4, driving mechanism; 41, side plate; 42, driving assembly; 421, motor I; 422, rotating shaft; 423, eccentric wheel; 424, limit ring; 425, transmission column; 426, transmission plate; 427, knocking plate; 43, connecting plate; 44, fixed column; 45, sliding frame; 46, connection plate; 47, bottom plate; 48, limit disc; 49, magnet holder; 5, screening mechanism; 51, screening plate; 52, force plate; 6, drying mechanism; 61, fan; 62, filter cylinder; 63, air cooler; 64, heater; 65, heating frame; 66, heating pipe; 67, cooling frame; 68, cooling pipe; 7, quantitative mechanism; 71, feeding frame; 72, protective box; 73, motor II; 74, quantitative plate shaft; 75, inclined plate; 76, driving wheel; 77, convex column; 78, driven wheel; 79, fan plate; 710, belt; 711, fixed plate; 8, recycling mechanism; 81, right-angle pipe; 82, connection pipe; 83, air inlet pipe; 84, cyclone separator; 85, air outlet pipe; 86, bifurcated pipe; 87, discharging pipe. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Please see the attached Figure 1 - Attachment Figure 3 , an embodiment of the present invention provides a dynamic, high-efficiency and energy-saving dryer based on PET, including a support frame 1, which is made of high-strength alloy steel and provides a basis for the operation of the equipment. The top side of the support frame 1 is fixedly connected to a drying cylinder 3 through two support plates 2. The support plates 2 disperse the weight of the drying cylinder 3 and enhance stability. The left side of the drying cylinder 3 is fixedly connected to a driving mechanism 4, which is made of stainless steel. The driving mechanism 4 includes a side plate 41, and the right side of the side plate 41 is fixedly connected to the left side of the drying cylinder 3 and fixed by welding, thereby providing support for the side plate 41. The top side of the side plate 41 is fixedly connected to a connecting plate 43 through a driving assembly 42. The driving assembly 42 includes a motor 421, and the motor 421 is used to provide a driving source. The bottom side of the motor 421 is fixedly connected to the top side of the side plate 41. By fixing the motor 421, the motor 421 can operate stably.

[0023] Please see the attached Figure 4 - Attachment Figure 6 The driving end of the motor 421 is fixedly connected to the rotating shaft 422, and the rotating shaft 422 is driven to rotate by starting the motor 421. The top of the rotating shaft 422 is fixedly connected to the inside of the right end of the connecting plate 43, and the force of the driving end of the motor 421 is transmitted to the connecting plate 43 through the rotating shaft 422. The outside of the rotating shaft 422 is fixedly connected to the eccentric wheel 423, and the force of the driving end of the motor 421 is transmitted to the eccentric wheel 423 through the rotating shaft 422, and the eccentric wheel 423 is driven to rotate synchronously. Limiting rings 424 are provided on the upper and lower sides of the eccentric wheel 423, and the provided limiting rings 424 provide space for movement inside the eccentric wheel 423. Two transmission columns 425 are slidably connected to the inside of the eccentric wheel 423, and the rotational force is transmitted to the transmission column 425 through the eccentric wheel 423. The interior of the limiting ring 424 is slidably connected to the exterior of the transmission post 425. The limiting ring 424 and the transmission post 425 are adapted to each other, allowing the eccentric wheel 423 to drive the transmission post 425 to slide. A transmission plate 426 is fixedly connected to the far side of the two transmission posts 425. The sliding force is transmitted to the transmission plate 426 through the transmission posts 425, which in turn drives the transmission plate 426 to slide back and forth. A knock plate 427 is fixedly connected to the right side of the transmission plate 426, transmitting the sliding force of the transmission posts 425 to the knock plate 427 through the transmission plate 426.

[0024] Please see the attached Figure 3 - Attachment Figure 5 The left end of the connecting plate 43 is fixedly connected to a fixed column 44, which transmits the force of the rotation of the rotating shaft 422 to the fixed column 44 through the connecting plate 43, and then drives the fixed column 44 to rotate synchronously. The outside of the fixed column 44 is slidably connected to a sliding frame 45, which rotates around the rotating shaft 422 through the fixed column 44, and then drives the sliding frame 45 to slide back and forth left and right. The outside of the sliding frame 45 is fixedly connected to multiple bottom plates 47 through two connecting plates 46, and the force of the sliding frame 45 is transmitted to the bottom plate 47 through the connecting plate 46. The outside of the two connecting plates 46 is slidably connected to the inside of the left end of the drying cylinder 3, and the two connecting plates 46 are restricted by the drying cylinder 3 to enable the two connecting plates 46 to slide stably. The inside of the bottom plate 47 is rotatably connected to multiple limit plates 48, and the limit plates 48 are restricted by the bottom plate 47 to enable the limit plates 48 to rotate stably. The bottom side of the limiting plate 48 is fixedly connected to an iron magnet 49 , which provides support for the iron magnet 49 to prevent it from sliding down, and at the same time, the iron magnet 49 is used to clean up iron debris.

[0025] Please see the attached Figure 4 The interior of the drying cylinder 3 is fixedly connected with a screening mechanism 5, which is used to screen the PET raw materials. The screening mechanism 5 includes a screening plate 51, which is provided with a plurality of openings inside the screening plate 51 so as to filter out unqualified PET raw materials. The outside of the screening plate 51 is fixedly connected to the interior of the drying cylinder 3 and is fixed by welding, thereby providing support for the screening plate 51. The bottom side of the screening plate 51 is fixedly connected with a force-bearing plate 52, which is fixed by welding, thereby providing support for the force-bearing plate 52. The right side of the knocking plate 427 is in contact with the left side of the force-bearing plate 52. When the knocking plate 427 moves back and forth, it can knock on the force-bearing plate 52, and then transmit the vibration force to the screening plate 51, thereby improving the screening of the PET raw materials.

[0026] Please see the attached Figure 3 , Attachment Figure 7 and attached Figure 10 , the bottom end of the support frame 1 is fixedly connected to a drying mechanism 6, and the drying mechanism 6 is used to screen the PET raw material. The drying mechanism 6 includes a fan 61, and the fan 61 is used to absorb wind force. The outside of the fan 61 is fixedly connected to the bottom end of the support frame 1 through a fixed frame, and the fan 61 is installed and fixed by the fixed frame. The rear side of the fan 61 is fixedly connected to a filter cartridge 62, and the filter cartridge 62 is used to filter impurities at the air inlet of the fan 61. The bottom right end of the fan 61 is fixedly connected to an air cooler 63 through a pipe, and the air cooler 63 is used to cool the wind to cold air. The top right end of the fan 61 is fixedly connected to a heater 64 through a pipe, and is used to heat the wind into hot air so that the PET raw material can crystallize. The right end of the heater 64 is fixedly connected to a heating frame 65 through a pipe, and the heating frame 65 is used to guide hot air; The front and rear ends of the heating frame 65 are fixedly connected to two heating pipes 66, which guide the hot air inside the heating frame 65 through the heating pipes 66. The top ends of the multiple heating pipes 66 are fixedly connected to the front and rear ends of the drying cylinder 3, respectively, and the hot air inside the heating frame 65 is introduced into the drying cylinder 3 through the heating pipes 66 to heat and crystallize the PET raw material. The right end of the air cooler 63 is fixedly connected to a cooling frame 67 through a pipe, and the cold air is guided through the cooling frame 67. The front and rear ends of the cooling frame 67 are fixedly connected to two cooling pipes 68, which guide the cold air inside the cooling frame 67 through the cooling pipes 68. The top ends of the two cooling pipes 68 are fixedly connected to the front and rear ends of the drying cylinder 3, respectively, and the cold air inside the cooling frame 67 is introduced into the drying cylinder 3 through the cooling pipes 68, so that the crystallized PET raw material can be cooled and the moisture therein can be absorbed.

[0027] Please see the attached Figure 7 - Attachment Figure 9 , the left side of the drying cylinder 3 is fixedly connected with a quantitative mechanism 7, which is used to control the feeding rate of the PET raw material. The quantitative mechanism 7 includes a feed frame 71, which is a right angle. The right end of the feed frame 71 is fixedly connected to the inside of the left end of the drying cylinder 3 and is fixed by welding, thereby providing support for the feed frame 71. The front side of the feed frame 71 is fixedly connected with a protective box 72, which is fixed by welding, thereby providing support for the protective box 72. The inside of the protective box 72 is fixedly connected with a second motor 73, which is used to provide a driving source. The driving end of the second motor 73 is fixedly connected to a plurality of quantitative plate shafts 74 through a rotating shaft, and the rotating shaft is driven to rotate by starting the second motor 73, and then the plurality of quantitative plate shafts 74 are driven to rotate. The inside of the feed frame 71 is fixedly connected with a plurality of inclined plates 75, which slow down the feeding speed of the PET raw material through the inclined plates 75, so that it can come into contact with the hot air and then be preliminarily heated; A driving pulley 76 is fixedly connected to the rear end of the rotating shaft, and the force from the drive end of motor 2 73 is transmitted to the driving pulley 76 via the rotating shaft. A belt 710 is provided on the outside of the driving pulley 76, and the friction between the driving pulley 76 and the belt 710 enables the driving pulley 76 to drive the belt 710 to rotate. A fixed plate 711 is fixedly connected to the interior of the front end of the exhaust pipe 85 and secured by welding, thereby providing support for the fixed plate 711. A convex column 77 is rotatably connected to the interior of the fixed plate 711, and a convex ring on the outside of the convex column 77 prevents the convex column 77 from slipping out. The front end of the convex column 77 is fixedly connected to the driven pulley 78 and secured by welding, thereby providing support for the driven pulley 78. The rear end of the convex column 77 is fixedly connected to the fan blade 79, which accelerates the drainage speed of the waste heat air. The outside of the driven pulley 78 is mounted on the inside of the belt 710, and the rotational force is transmitted to the driven pulley 78 via the belt 710.

[0028] Please see the attached Figure 3 and attached Figure 7 The top side of the drying cylinder 3 is fixedly connected to a recovery mechanism 8, which is used to recover waste heat. The recovery mechanism 8 includes two right-angle tubes 81. The front ends of the two right-angle tubes 81 are fixedly connected to the top of the drying cylinder 3 and fixed by welding. At the same time, the right-angle tubes 81 are used to lead out the waste heat inside the drying cylinder 3. The bottom ends of the two right-angle tubes 81 are fixedly connected to a connecting pipe 82, and the waste heat inside the two right-angle tubes 81 is led out together through the connecting pipe 82. The bottom end of the connecting pipe 82 is fixedly connected to an air inlet pipe 83, and the waste heat is introduced into the interior of the air inlet pipe 83 through the connecting pipe 82. The bottom end of the air inlet pipe 83 is fixedly connected to a cyclone separator 84, and the waste hot air provided by the air inlet pipe 83 is filtered through the cyclone separator 84 to filter the impurities in the waste hot air. The left end of the cyclone separator 84 is fixedly connected to an outlet pipe 85, and the hot air separated by the cyclone separator 84 is led out through the outlet pipe 85. The front end of the air outlet pipe 85 is fixedly connected to the rear end of the feed frame 71. Excess heat is pumped into the feed frame 71 through the air outlet pipe 85 to preheat the PET raw material. A bifurcated pipe 86 is fixedly connected to the bottom end of the air outlet pipe 85. Heat from the inside of the air outlet pipe 85 is drawn out through the bifurcated pipe 86. The front end of the bifurcated pipe 86 is fixedly connected to the inside of the heating frame 65. Hot air is introduced into the heating frame 65 through the bifurcated pipe 86 to assist in heating the raw material. A discharge pipe 87 is fixedly connected to the bottom end of the cyclone separator 84. Impurities separated by the cyclone separator 84 are discharged through the discharge pipe 87.

[0029] Working principle: First, the air is absorbed by starting the fan 61, and then filtered through the filter cartridge 62. The air will then pass through the air cooler 63 and the heater 64 to cool and heat the air respectively. The heater 64 then sends the hot air through the heating frame 65 to the interior of multiple heating tubes 66, and finally enters the interior of the drying cylinder 3 to heat and crystallize the PET raw material. The air cooler 63 then cools the air, passes through the cooling frame 67 to enter the interior of multiple cooling tubes 68, and finally enters the interior of the drying cylinder 3 to absorb moisture from the crystallized PET raw material. The waste heat generated will then pass through the two right-angle tubes 81 into the interior of the connecting tube 82, and then pass through the air inlet pipe 83 into the interior of the cyclone separator 84 to filter the waste heat, filter out impurities and flow out through the discharge pipe 87, while the hot air enters the interior of the feed frame 71 through the air outlet pipe 85 to preheat the PET raw material, thereby improving the effect of waste heat recovery. At this time, the PET raw material is poured into the interior of the feeding frame 71, and finally the unloading speed is slowed down by multiple inclined plates 75. At this time, the second motor 73 is started to drive the rotating shaft to rotate, and then the multiple quantitative plate shafts 74 are driven to rotate, so that the unloading speed of the PET raw material can be controlled to prevent the PET raw material from piling up. In the process of rotation of the rotating shaft, the driving wheel 76 is also driven to rotate, and then the belt 710 is driven to rotate, and finally the driven wheel 78 is driven to rotate. The driven wheel 78 drives the fan plate 79 to rotate through the convex column 77, so that it can heat the outflow of waste heat, thereby improving efficiency. Then the PET raw material enters the interior of the drying cylinder 3 and falls onto the screening plate 51 for heating, crystallization and cooling to absorb moisture. At the same time, the motor 1 421 is started to drive the rotating shaft 422 to rotate, and then drives the eccentric wheel 423 to rotate. The eccentric wheel 423 uses the limit ring 424 to enable it to drive the two transmission columns 425 to slide back and forth, and then drives the transmission plate 426 to slide, and finally drives the knocking plate 427 to slide back and forth and knock the force-bearing plate 52 back and forth, transmitting the vibration force to the screening plate 51 for filtration, and allowing the PET raw material to roll to increase the heating area; At the same time, the rotating shaft 422 will also drive the connecting plate 43 to rotate, and then drive the fixed column 44 to rotate, and finally drive the sliding frame 45 to slide back and forth, and drive the two connecting plates 46 to slide through the sliding frame 45, and finally drive the three bottom plates 47 to slide, and use the bottom plate 47 to provide rotation support for the limit plate 48, so that the iron frame 49 can slide back and forth and rotate at the same time, and clean the iron in the PET raw material, thereby improving product quality.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dynamic, high-efficiency and energy-saving dryer based on PET, comprising a support frame (1), characterized in that: The top side of the support frame (1) is fixedly connected to a drying cylinder (3) via two support plates (2); the left side of the drying cylinder (3) is fixedly connected to a driving mechanism (4); the interior of the drying cylinder (3) is fixedly connected to a screening mechanism (5); the bottom end of the support frame (1) is fixedly connected to a drying mechanism (6); the left side of the drying cylinder (3) is fixedly connected to a quantitative mechanism (7); and the top side of the drying cylinder (3) is fixedly connected to a recovery mechanism (8); The driving mechanism (4) includes a side plate (41), the right side of the side plate (41) is fixedly connected to the left side of the drying cylinder (3), the top side of the side plate (41) is fixedly connected to a connecting plate (43) through a driving assembly (42), the left end of the connecting plate (43) is fixedly connected to a fixing column (44), the outside of the fixing column (44) is slidably connected to a sliding frame (45), the outside of the sliding frame (45) is fixedly connected to a plurality of bottom plates (47) through two connecting plates (46), the inside of the bottom plate (47) is rotatably connected to a plurality of limit plates (48), and the bottom side of the limit plate (48) is fixedly connected to an iron magnet (49).

2. A dynamic high-efficiency energy-saving dryer based on PET according to claim 1, characterized in that, The recovery mechanism (8) comprises two right-angle tubes (81), the front ends of the two right-angle tubes (81) are fixedly connected to the top end of the drying cylinder (3), the bottom ends of the two right-angle tubes (81) are fixedly connected to a connecting tube (82), the bottom ends of the connecting tubes (82) are fixedly connected to an air inlet pipe (83), the bottom end of the air inlet pipe (83) is fixedly connected to a cyclone separator (84), the left end of the cyclone separator (84) is fixedly connected to an air outlet pipe (85), the bottom end of the air outlet pipe (85) is fixedly connected to a bifurcated pipe (86), and the bottom end of the cyclone separator (84) is fixedly connected to a discharge pipe (87).

3. A dynamic high-efficiency energy-saving dryer based on PET according to claim 1, characterized in that, The screening mechanism (5) comprises a screening plate (51), the outside of the screening plate (51) is fixedly connected to the inside of the drying cylinder (3), and the bottom side of the screening plate (51) is fixedly connected to a force-bearing plate (52).

4. A dynamic high-efficiency energy-saving dryer based on PET according to claim 2, characterized in that, The drying mechanism (6) includes a fan (61), the outside of the fan (61) is fixedly connected to the bottom end of the support frame (1) through a fixing frame, the rear side of the fan (61) is fixedly connected to a filter cartridge (62), the bottom of the right end of the fan (61) is fixedly connected to an air cooler (63) through a pipeline, the top of the right end of the fan (61) is fixedly connected to a heater (64) through a pipeline, the right end of the heater (64) is fixedly connected to a heating frame (65) through a pipeline, the front and rear ends of the heating frame (65) are fixedly connected to two heating pipes (66), the right end of the air cooler (63) is fixedly connected to a cooling frame (67) through a pipeline, and the front and rear ends of the cooling frame (67) are fixedly connected to two cooling pipes (68).

5. A dynamic high-efficiency energy-saving dryer based on PET according to claim 4, characterized in that, The top ends of the plurality of heating tubes (66) are respectively fixedly connected to the interior of the front and rear ends of the drying cylinder (3), the top ends of the two cooling tubes (68) are respectively fixedly connected to the interior of the front and rear ends of the drying cylinder (3), and the front end of the bifurcated tube (86) is fixedly connected to the interior of the heating frame (65).

6. A dynamic high-efficiency energy-saving dryer based on PET according to claim 4, characterized in that: The quantitative mechanism (7) includes a feed frame (71), the right end of the feed frame (71) is fixedly connected to the left end of the drying cylinder (3), the front side of the feed frame (71) is fixedly connected to a protective box (72), the interior of the protective box (72) is fixedly connected to a second motor (73), the driving end of the second motor (73) is fixedly connected to a plurality of quantitative plate shafts (74) via a rotating shaft, the interior of the feed frame (71) is fixedly connected to a plurality of inclined plates (75), the rear end of the rotating shaft is fixedly connected to a driving wheel (76), the outer surface of the driving wheel (76) is provided with a belt (710), the front end of the air outlet pipe (85) is fixedly connected to a fixed plate (711), the interior of the fixed plate (711) is rotatably connected to a convex column (77), the front end of the convex column (77) is fixedly connected to a driven wheel (78), and the rear end of the convex column (77) is fixedly connected to a fan plate (79).

7. A dynamic high-efficiency energy-saving dryer based on PET according to claim 3, characterized in that: The driving assembly (42) includes a motor 1 (421), the bottom side of the motor 1 (421) is fixedly connected to the top side of the side plate (41), the driving end of the motor 1 (421) is fixedly connected to a rotating shaft (422), the outside of the rotating shaft (422) is fixedly connected to an eccentric wheel (423), the inside of the eccentric wheel (423) is slidably connected to two transmission columns (425), the two transmission columns (425) are fixedly connected to a transmission plate (426) on the far side, and the right side of the transmission plate (426) is fixedly connected to a knocking plate (427).

8. A dynamic high-efficiency energy-saving dryer based on PET according to claim 7, characterized in that: The right side of the knocking plate (427) contacts the left side of the force-bearing plate (52), and the upper and lower sides of the eccentric wheel (423) are both provided with limit rings (424), and the interior of the limit ring (424) is slidably connected to the outside of the transmission column (425).

9. A dynamic high-efficiency energy-saving dryer based on PET according to claim 8, characterized in that: The exteriors of the two connecting plates (46) are slidably connected to the interior of the left end of the drying cylinder (3), and the top end of the rotating shaft (422) is fixedly connected to the interior of the right end of the connecting plate (43).

10. A PET-based dynamic high-efficiency energy-saving dryer according to claim 6, characterized in that: The exterior of the driven wheel (78) is sleeved inside the belt (710), and the front end of the air outlet pipe (85) is fixedly connected to the interior of the rear end of the feed frame (71).

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