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CN-121973350-A - Granulating equipment with drying function for recycling waste plastics and granulating method

CN121973350ACN 121973350 ACN121973350 ACN 121973350ACN-121973350-A

Abstract

The invention relates to the technical field of waste plastic recycling, and discloses a granulating device with a drying function and a granulating method for recycling waste plastic, wherein the granulating device with the drying function for recycling waste plastic comprises a granulating box and an extruding machine, the output end of the extruding machine extends into the granulating box, the water-cooling box is fixedly connected in the granulating box, the output end of the extruding machine is fixedly connected with a forming die, and the forming die is fixedly connected at the end part of the granulating box and is communicated with the inner cavity of the granulating box; the invention carries out omnibearing and uniform spray cooling on strip-shaped blanks through the plurality of groups of symmetrically distributed water-cooling spray pipes, can rapidly take away the heat of high-temperature plastic strips, rapidly cool and shape the strip-shaped blanks, effectively prevent the problems of deformation, distortion and the like caused by uneven cooling or too slow cooling speed, ensure the extrusion quality, and simultaneously, the cooling liquid forms a closed circulation system through the return pipe and the circulation pipe, thereby saving water resources, reducing production cost and realizing high efficiency and energy conservation in the cooling process.

Inventors

  • SUN ENCHANG

Assignees

  • 东莞市神彩塑胶制品有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (10)

  1. 1. The utility model provides a waste plastic is retrieved with granulating equipment with drying function, includes granulating case (1) and extruding machine (2), its characterized in that, the output of extruding machine (2) stretches into granulating incasement (1), still includes: The water cooling box (3), the water cooling box (3) is fixedly connected in the grain cutting box (1), the output end of the plastic extruding machine (2) is fixedly connected with a forming die (21), the forming die (21) is fixedly connected at the end part of the grain cutting box (1) and is communicated with the inner cavity of the grain cutting box (1), The water cooling part is arranged on the water cooling box (3) and used for cooling the material output by the forming die (21); The drying part is arranged in the granulating box (1) and is used for drying the water-cooled materials; and the granulating part is arranged in the granulating box (1) and is used for granulating the dried material.
  2. 2. The granulating equipment with drying function for recycling waste plastics according to claim 1, wherein the water cooling part comprises a liquid storage bin (4), a plurality of groups of water cooling cavities (31) are symmetrically arranged in the water cooling box (3), water cooling spray pipes (32) are fixedly connected in each group of water cooling cavities (31), the output ends of the water cooling spray pipes (32) face the center of the water cooling box (3), the ends of the water cooling spray pipes (32) are communicated through a liquid guide pipe (33), a liquid supply pipe (41) is fixedly communicated on the liquid storage bin (4), a cooling water pump (42) is arranged on the liquid supply pipe (41), the input end of the liquid supply pipe (41) extends to the bottom of an inner cavity of the liquid storage bin (4), and the output end of the liquid supply pipe (41) is communicated with the liquid guide pipe (33).
  3. 3. The granulating equipment with drying function for recycling waste plastics according to claim 2, wherein the bottom of each group of water cooling cavities (31) positioned below is fixedly communicated with a return pipe (43), the bottom ends of the return pipes (43) of each group are communicated through a circulation pipe (44), and the output end of the circulation pipe (44) is communicated with the upper part of the inner cavity of the liquid storage bin (4).
  4. 4. The granulating device with drying function for recycling waste plastics according to claim 2, wherein the granulating part comprises a granulating frame (5), the granulating frame (5) is fixedly connected in a granulating box (1), a rotary cutter (51) is rotationally connected at the upper part of an inner cavity of the granulating frame (5), a fixed roller (52) is fixedly connected at the lower part of the inner cavity of the granulating frame (5), a traction roller group (53) is fixedly connected in the granulating box (1) at the feeding side of the granulating frame (5), two groups of traction roller rotating shaft ends of the traction roller group (53) are in transmission connection through a gear set (531), a granulating motor (54) is fixedly connected on the outer wall of the granulating box (1), and an output shaft of the granulating motor (54), a rotating shaft of the rotary cutter (51) and a rotating shaft of the traction roller group (53) are in transmission connection through a belt pulley group (55), Wherein, be located and cut grain frame (5) below cut grain case (1) internal fixation and be connected with row hopper (56), be located and cut grain case (1) lateral wall of hopper (56) bottom and seted up blown down tank (57).
  5. 5. The granulating device with drying function for recycling waste plastics according to claim 4, wherein the drying part comprises an air drying box (6), the air drying box (6) is fixed in the granulating box (1), the air drying box (6) is positioned between the water cooling box (3) and the granulating frame (5), the top of the air drying box (6) is fixedly connected with an air guide bin (61), a plurality of groups of air drying holes (611) communicated with the inner cavity of the air drying box (6) are formed in the bottom of the air guide bin (61), the bottom of the air drying box (6) is of an inclined design, a flow guide pipe (62) is fixed at the bottom of the air drying box (6) positioned at the inclined lower end and communicated with the bottom of the inner cavity of the liquid storage bin (4), the top of the liquid storage bin (4) is provided with a flow guide part for conveying air flow in the air guide bin (61), Wherein, inside, the inside of air-drying case (6) of stock solution storehouse (4) and the both ends outer wall of air-drying case (6) are all symmetry installed multiunit spacing deflector roll (45) for smooth material of carrying follow forming die (21) output.
  6. 6. The granule cutting device with drying function for recycling waste plastics according to claim 5, wherein the flow guiding part comprises a piston box (63), the piston box (63) is fixedly connected to the top of the liquid storage bin (4), a piston plate (631) is connected in a sliding manner in the piston box (63), a push-pull rod (632) is connected to the side wall of the piston plate (631) in a rotating manner, a linkage shaft (64) is connected to the side wall of the granule cutting box (1) in a rotating manner, a turntable (641) is fixedly connected to the end part of the linkage shaft (64), the other end of the push-pull rod (632) is connected to the side wall of the turntable (641) in a rotating manner, an inflation tube (65) is fixed on and communicated with the piston box (63), the other end of the inflation tube (65) is communicated with the inner cavity of the air guide bin (61), a one-way valve is arranged in the inflation tube (65), The device comprises a liquid storage bin (4), wherein an air suction pipe (651) is fixedly connected in the liquid storage bin, the output end of the air suction pipe (651) is communicated with the inner cavity of a piston box (63), the input end of the air suction pipe (651) penetrates through the outer side of a grain cutting box (1), and a one-way valve is arranged in the air suction pipe (651).
  7. 7. The granulating equipment with drying function for recycling waste plastics according to claim 6, wherein a liquid stirring shaft (66) is rotatably connected to the liquid storage bin (4) at the lower end of the flow guide pipe (62), liquid stirring blades (661) are fixedly connected to the outer wall of the liquid stirring shaft (66), and the liquid stirring shaft (66), the linkage shaft (64) and the rotating shaft of the rotary cutter (51) are in transmission connection through a chain wheel set (67).
  8. 8. A waste plastic recycling and granulating device with a drying function according to claim 3, characterized in that the granulating box (1) is provided with a heat exchange cavity (7), the liquid guide tube (33), the return tube (43) and the circulating tube (44) are all positioned in the heat exchange cavity (7), the upper part of the inner cavity of the liquid storage bin (4) is fixed and communicated with an exhaust tube (71), and the output end of the exhaust tube (71) extends to one side of the heat exchange cavity (7).
  9. 9. The granulating equipment with drying function for recycling waste plastics according to claim 5, wherein a first flip (8) is rotatably connected to the side wall of the granulating box (1), a second flip (81) is rotatably connected to the side wall of the water cooling box (3), and a third flip (82) is rotatably connected to the side wall of the air drying box (6).
  10. 10. A granulating method with drying function for recycling waste plastics, use of a drying function-equipped pelletizing device for recycling waste plastics according to any one of claims 1 to 9, characterized by the following steps: Step one, waste plastics are melt extruded by an extruder (2), formed into strips by a forming die (21), and then enter a water cooling box (3) for cooling; Secondly, the cooled strip enters an air drying box (6), surface moisture is purged by utilizing airflow, and residual liquid on the strip is recovered; Step three, the dried strip material is stably conveyed to a granulating station through a plurality of groups of limiting guide rollers (45) and traction roller groups (53); and fourthly, shearing the strips by a rotary cutter (51) rotating at a granulating station, forming particles, and discharging the particles through a discharge hopper (56).

Description

Granulating equipment with drying function for recycling waste plastics and granulating method Technical Field The invention relates to the technical field of waste plastic recycling, in particular to a granulating device with a drying function for waste plastic recycling and a granulating method. Background Along with the enhancement of global environmental protection consciousness and the deep popularization of the recycling economy concept, the recycling of waste plastics has become a key link for solving the problem of white pollution and realizing sustainable utilization of resources, and in the plastic recycling and regenerating process, the grain cutting is an important process for processing the melted and plasticized waste plastics into standardized grains, and the processing quality directly influences the quality and subsequent application of regenerated materials. At present, the traditional plastic granulating equipment mostly adopts a simple water cooling soaking or independent fan blow-drying mode, has a plurality of technical bottlenecks of low cooling efficiency, incomplete drying, high energy consumption, unstable granule forming quality and the like, and the traditional process has the defects of direct discharge or simple circulation of cooling water, serious water resource waste, lack of uniform control on the temperature of a cooling medium, inconsistent cooling of plastic strips in different batches or at different positions in the same batch, more importantly, the traditional equipment often breaks the procedures of cooling, drying, granulating and the like, and lack of cooperative linkage among systems, so that the whole equipment occupies large area, has low automation degree and is inconvenient to maintain. Disclosure of Invention The invention provides a granulating device with a drying function and a granulating method for recycling waste plastics, which realize uniform cooling and circulating water saving through multiple groups of symmetrical spraying, utilize a granulating power linkage piston box to generate cold air flow, have drying and secondary cooling functions and prevent a cutter from being stuck, maintain stable water temperature through heat exchange between stirring liquid and air flow, realize efficient energy saving and long-term stable operation, and solve the problems of low cooling efficiency, incomplete drying, high water resource energy consumption and unstable particle forming quality of the traditional device in the background art. The invention provides the following technical scheme: The granulating device with the drying function for recycling waste plastics comprises a granulating box and an extruding machine, wherein the output end of the extruding machine stretches into the granulating box, the granulating device further comprises a water cooling box, the water cooling box is fixedly connected in the granulating box, the output end of the extruding machine is fixedly connected with a forming die, the forming die is fixedly connected to the end of the granulating box and is communicated with the inner cavity of the granulating box, a water cooling part for cooling materials output by the forming die is arranged on the water cooling box, a drying part is arranged in the granulating box and used for drying the materials after water cooling, and the granulating part is arranged in the granulating box and used for granulating the materials after drying. As a preferable technical scheme of the invention, the water cooling part comprises a liquid storage bin, a plurality of groups of water cooling cavities are symmetrically arranged in the water cooling box, water cooling spray pipes are fixedly connected in each group of water cooling cavities, the output ends of the water cooling spray pipes face the center of the water cooling box, the end parts of the water cooling spray pipes are communicated through liquid guide pipes, a liquid supply pipe is fixedly communicated with the liquid storage bin, a cooling water pump is arranged on the liquid supply pipe, the input end of the liquid supply pipe extends to the bottom of the inner cavity of the liquid storage bin, and the output end of the liquid supply pipe is communicated with the liquid guide pipes. As a preferable technical scheme of the invention, the bottom of each group of water cooling cavities positioned below is fixedly communicated with a return pipe, the bottom ends of the return pipes of each group are communicated through a circulation pipe, and the output end of the circulation pipe is communicated with the upper part of the inner cavity of the liquid storage bin. As a preferable technical scheme of the invention, the grain cutting part comprises a grain cutting frame, the grain cutting frame is fixedly connected in a grain cutting box, a rotary cutter is rotationally connected to the upper part of an inner cavity of the grain cutting frame, a fixed roller is fixedly connected to the lower par