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CN-122015468-A - Plastic recycling crushed aggregates cylinder dryer

CN122015468ACN 122015468 ACN122015468 ACN 122015468ACN-122015468-A

Abstract

The invention belongs to the field of drying equipment, and particularly relates to a plastic recycling crushed aggregates drum dryer which comprises a workbench, a heating mechanism and a pressure regulating device, wherein a heat insulation box is fixedly arranged on the workbench, a first hydraulic cylinder device is arranged right below the heat insulation box, the upper end of the first hydraulic cylinder device is fixedly connected with a discharging device, a drying drum is fixedly arranged in the heat insulation box, a vertically arranged conveying drum device is arranged in the drying drum, a discharging drum which is in sealed sliding connection with the discharging device is arranged at the lower end of the drying drum, the heating mechanism is symmetrically arranged on an outer side plate of the heat insulation box, the pressure regulating device is arranged in the heating mechanism, and a horizontal guide air pipe is symmetrically arranged on the drying drum, and the guide air pipe outwards penetrates through the heat insulation box to be communicated with a circulating air box and the drying drum.

Inventors

  • DUAN QIANKUN
  • LI ZHIJUN

Assignees

  • 安徽弘钰乾塑业有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (8)

  1. 1. The utility model provides a plastics recycling crushed aggregates drum dryer, includes workstation, heating mechanism and pressure regulating device, its characterized in that, fixed mounting has the heat-insulating box on the workstation, is equipped with the first pneumatic cylinder device of vertical setting under the heat-insulating box, and first pneumatic cylinder device upper end fixedly connected with discharging device, fixed mounting has a stoving section of thick bamboo in the heat-insulating box, is equipped with the transport section of thick bamboo device of vertical setting in the stoving section of thick bamboo, and stoving section of thick bamboo lower extreme is equipped with the ejection of compact section of thick bamboo with discharging device sealed sliding connection, heating mechanism includes the circulation gas box, and the circulation gas box symmetry is installed on the outer panel of heat-insulating box, is equipped with the hot plate device in the circulation gas box, is equipped with the second pneumatic cylinder device of level setting on the circulation gas box outer panel, be equipped with the symmetrical horizontal direction trachea that is equipped with on the stoving section of thick bamboo, the direction trachea evenly distributes in vertical direction, outwards passes heat-insulating box intercommunication circulation gas box and stoving section of thick bamboo; the pressure regulating device comprises a partition plate, the partition plate is vertically arranged and is connected in the circulating gas tank in a sealing mode, the partition plate is connected with the second hydraulic cylinder device through a connecting rod, a vent pipe which is arranged corresponding to the guide air pipe is arranged on the other side of the partition plate, the vent pipe is connected with the guide air pipe in a sliding sealing mode, a filtering circular plate is arranged at one end, far away from the partition plate, of the vent pipe, and an air hole is formed in the outer wall of one end, close to the partition plate, of the vent pipe.
  2. 2. The plastic recycling crushed aggregates drum dryer according to claim 1, wherein the heating plate device is fixedly installed between the partition plate and the heat insulation box, a ventilation window is opened on an outer side plate of the circulation gas box, and a mounting bracket is arranged at the center of the outer side plate of the circulation gas box.
  3. 3. The plastic recycling crushed aggregates drum dryer according to claim 2, wherein the air valve device is arranged on the partition board, the air valve device can automatically control the on-off state of two sides of the partition board, the sealing strip is arranged on the outer edge of the partition board, and the sealing strip is in sliding sealing connection with the inner wall of the circulating air box.
  4. 4. The plastic recycling crushed aggregates drum dryer according to claim 2, wherein a material guiding inclined plate is arranged between the material discharging drum and the inner wall of the lower end of the drying drum, an upper plate and a lower plate are correspondingly arranged on the upper end face and the lower end face of the heat insulation box, the upper plate and the lower plate are respectively in sealing connection with the upper end face and the lower end face of the drying drum, and a feeding device communicated with the drying drum is arranged on the upper plate.
  5. 5. The plastic recycling crushed aggregates drum dryer according to claim 4, wherein the discharging device comprises a push rod, the lower end of the push rod is fixedly connected with the output end of the first hydraulic cylinder device, the upper end of the push rod is fixedly connected with a sealing round table, a sealing ring is arranged on the outer wall of the sealing round table, and a limiting round groove is formed in the center of the upper end face of the sealing round table.
  6. 6. The plastic recycling crushed aggregates drum dryer according to claim 4, wherein the conveying drum device comprises a conveying drum with a central axis same as that of the drying drum, through holes are uniformly distributed in the conveying drum, lower grid plates are circumferentially arranged on the lower end face of the conveying drum, upper grid plates are circumferentially arranged on the upper end face of the conveying drum, the upper ends of the upper grid plates are fixedly connected with the upper plate, the lower ends of the lower grid plates are fixedly connected with a material guiding inclined plate, and the conveying drum is vertically arranged in the drying drum.
  7. 7. The plastic recycling crushed aggregates drum dryer according to claim 6, wherein a circumferentially arranged inclined material throwing inclined plate is provided at an upper end of the outer wall of the conveying drum.
  8. 8. The plastic recycling crushed aggregates drum dryer according to claim 5, wherein the conveying drum is rotatably connected with a rotating shaft, spiral auger blades are arranged on the rotating shaft, a driving motor is connected to the upper end of the rotating shaft in a transmission mode, the driving motor is fixedly arranged on the upper plate, and the lower end of the rotating shaft is connected in a limiting circular groove in a transmission mode in a sliding mode up and down.

Description

Plastic recycling crushed aggregates cylinder dryer Technical Field The invention belongs to the field of drying equipment, and particularly relates to a plastic recycling crushed aggregates cylinder type dryer. Background In the plastic recycling process, the cleaned crushed aggregates usually contain a large amount of surface moisture, and the crushed aggregates must be effectively dried to enter the subsequent granulating or forming process. Drum dryers are widely used in this field due to their simple structure, large throughput and continuous operation. For example, chinese patent document of application number CN202223496023.5 discloses a drying device for recycling waste plastic particles, which is to introduce hot air into a drying box, through setting a stirring rod, a motor drives the stirring rod to rotate through a rotating shaft, and stir plastic particles to contact with hot air. However, the above-mentioned normal pressure heating and drying method has obvious efficiency bottleneck. On the one hand, under the normal pressure environment, the evaporation temperature of the water is higher, the evaporation rate is limited by the ambient pressure, the heat energy is mainly used for heating the liquid water to the boiling point instead of being used for efficient phase change evaporation, so that the efficiency of removing the water by unit heat energy is lower, and the energy consumption is higher. On the other hand, one end of the hot air flow is introduced, the other end is naturally discharged or simply induced draft is carried out, the contact time and the contact uniformity between the heat medium and the materials are insufficient, the short circuit or local overheating of the air flow is easy to form, the heat is discharged after being not fully absorbed, and the heat exchange efficiency is low. In addition, for some heat sensitive plastic scraps, too high a drying temperature can also cause softening and caking of materials, affecting the product quality. Disclosure of Invention The invention aims at overcoming the defects of the prior art, and provides a plastic recycling crushed aggregates drum dryer, which is provided with a novel drying drum structure, so that the contact between hot air and plastic fragments can be effectively carried out under a negative pressure state, the drying efficiency is effectively improved, the water evaporation temperature is reduced, the plastic fragments are prevented from being softened and agglomerated due to high temperature, and the product quality is improved. In order to achieve the above purpose, the specific technical scheme of the invention is as follows: The utility model provides a plastics recycling crushed aggregates drum dryer, includes workstation, heating mechanism and pressure regulating device, fixed mounting has the heat-insulating box on the workstation, is equipped with the first pneumatic cylinder device of vertical setting under the heat-insulating box, first pneumatic cylinder device upper end fixedly connected with discharging device, fixed mounting has a stoving section of thick bamboo in the heat-insulating box, is equipped with the transport section of thick bamboo device of vertical setting in the stoving section of thick bamboo, and the stoving section of thick bamboo lower extreme is equipped with the ejection of compact section of thick bamboo with discharging device seal sliding connection, heating mechanism includes the circulation gas box, and the symmetry is installed on the outer panel of heat-insulating box, is equipped with the hot plate device in the circulation gas box, is equipped with the second pneumatic cylinder device of level setting on the outer panel of circulation gas box, be equipped with the symmetrical horizontal guide air pipe that is equipped with on the stoving section of thick bamboo, the guide air pipe evenly distributes in vertical direction, and the guide air pipe outwards passes heat-insulating box intercommunication circulation gas box and stoving section of thick bamboo; the pressure regulating device comprises a partition plate, the partition plate is vertically arranged and is connected in the circulating gas tank in a sealing mode, the partition plate is connected with the second hydraulic cylinder device through a connecting rod, a vent pipe which is arranged corresponding to the guide air pipe is arranged on the other side of the partition plate, the vent pipe is connected with the guide air pipe in a sliding sealing mode, a filtering circular plate is arranged at one end, far away from the partition plate, of the vent pipe, and an air hole is formed in the outer wall of one end, close to the partition plate, of the vent pipe. As a further arrangement of the scheme, the heating plate device is fixedly arranged between the partition plate and the heat insulation box, the ventilation window is arranged on the outer side plate of the circulating gas box, and the mounting bracket is arrange