New Double-stage Fully Automatic Waste PVC Granulator Plastic Recycling Granulation Equipment

Aiming at the recycling pain points of PVC (polyvinyl chloride) materials, such as easy decomposition, strong thermal sensitivity, high moisture adhesion and difficult impurity filtration, the 180 type PVC granulator adopts a dedicated double-stage extrusion temperature control process. It is a special core equipment suitable for the recycling and processing of various waste PVC pipes, profiles, soft films and leftover materials. Different from general PE and PP granulation equipment, the 180 type PVC granulator is specially optimized with zoned heating structure and plasticizing speed, avoiding the problems of high-temperature decomposition carbonization and low-temperature incomplete plasticization of PVC. Equipped with hydraulic non-stop screen changing, automatic water removal and drying, and precise variable frequency speed control systems, it realizes high-efficiency, low-loss and high-quality granulation production of waste PVC materials.

The core advantages of the complete 180 type PVC granulator are reflected in five highlights: precise zoned temperature control, double-stage purification and plasticization, non-stop stable production, anti-carbonization and anti-adhesion, as well as wear resistance and low failure rate. Abandoning the simple heating design of ordinary granulators, the equipment is equipped with 11 sets of heating rings for independent zoned temperature control, which perfectly matches the melting characteristics of thermally sensitive PVC materials and fundamentally reduces defects such as material decomposition, yellowing and carbonization. The screws and barrels of the main and auxiliary machines are all made of high-frequency strengthened and wear-resistant materials with alloy reinforcement at the feed inlet, enabling long-term processing of waste PVC miscellaneous materials with sediment and impurities. Matched with a fully automatic closed-loop production line, it can stably process both dry and wet materials, producing recycled PVC particles with uniform appearance, high purity and excellent market premium.

This equipment has a wide range of application scenarios. It can process waste PVC pipes, plastic steel profiles, PVC soft films, wire sheaths, plastic pipe fittings, injection molding leftovers, foamed PVC waste and other materials. The finished particles can be used for secondary processing such as pipe extrusion, profile modification, injection molding products and filling auxiliary materials. It is the core equipment for large-scale mass production of small and medium-sized PVC plastic recycling plants and environmental protection recycling enterprises.

1. Complete Equipment Parameters, Accessory Functions and Core Values
2. 600×600 Forced Variable Frequency Feeder (15KW Motor): Adopting a large-diameter square feeding structure, it is suitable for block, sheet and strip waste PVC materials, solving the problems of hard PVC material jamming, soft material bridging and uneven feeding. The 15KW high-power variable frequency motor can intelligently adjust the speed following the extrusion speed of the main machine, realizing uniform forced feeding and stabilizing the internal extrusion pressure of the main machine. It avoids plasticizing fluctuation, strip breakage and uneven particles caused by unstable feeding speed, ensuring the stable operation of the entire production line.
3. 180 Type Main Granulator Assembly: Equipped with a 315 type low-noise hard tooth surface reducer, it features large transmission torque, strong bearing capacity and silent operation, supporting 24-hour continuous heavy-duty production with low tooth breakage probability and extremely low failure rate, adapting to the high-resistance extrusion working condition of PVC materials. The core 180×3000mm screw is made of 40CR material with high-frequency quenching treatment, featuring high hardness, wear resistance and high-temperature deformation resistance, specially adapted to the mixing requirements of hard and soft PVC materials. The feed inlet is added with a wear-resistant alloy layer to effectively resist friction loss caused by impurities and greatly extend the service life of core accessories. The matching 232×3000mm barrel is made of 45# steel with high-frequency strengthening treatment, which is high-temperature resistant, pressure resistant, smooth inner wall without material adhesion, eliminating residual scorching and decomposition of PVC materials. Powered by a 75KW special main motor with sufficient power reserve and stable extrusion pressure, the heating system with 11 groups of independent heating rings realizes full-body precise zoned temperature control. It can adjust the temperature of each section according to different PVC materials, accurately avoiding the industry problems of thermal-sensitive material high-temperature decomposition and low-temperature incomplete plasticization, serving as the core configuration for PVC granulation quality improvement.
4. 165 Type Auxiliary Machine Assembly: Matched with a 225 Changzhou-made low-noise hard tooth surface reducer with high transmission accuracy, stable operation and strong durability. Equipped with a 165×1500mm 40CR high-frequency screw and a 219×1500mm 45# steel barrel, it performs secondary fine plasticization, mixing and purification on preliminarily melted PVC materials from the main machine, making material melting more thorough and texture denser, eliminating particle looseness, bubbles, residual impurities and other defects. Fitted with a 350 large-diameter screen left-right hydraulic non-stop screen changing head, the 4KW pump motor provides stable hydraulic power for alternating screen replacement without shutdown or strip breakage, greatly reducing shutdown loss and waste generation. The large-size screen has sufficient filtration area to thoroughly intercept dust, sediment and coke impurities in PVC materials, significantly improving the purity of recycled PVC particles. The 30KW special auxiliary motor is precisely linked with the main machine with a reasonable double-stage extrusion ratio and high production capacity.
5. 350 Type Stainless Steel Cooling Water Tank (4000×350×260mm): Made of full stainless steel, it is rust-proof, corrosion-resistant, easy to clean and not easy to scale, adapting to the long-term production working condition of wet PVC waste materials. The 4-meter extended water tank realizes uniform gradient water cooling and shaping for high-temperature PVC strips after double-stage extrusion, enabling rapid cooling and hardening of soft and hard PVC strips with flat and regular shapes without adhesion or deformation. It provides high-quality blanks for subsequent granulation and water removal processes and reduces the defective rate.
6. 2500×300 201 Stainless Steel Water Shaking and Strip Blowing Machine: Made of 201 stainless steel with rust resistance, durability and good air tightness, it specially solves the pain points of high water content after PVC material cleaning and easy adhesion after cooling. Equipped with a 1.1KW shaking motor and a 1.5KW blowing motor, it removes surface water on plastic strips through high-frequency shaking and all-round high-pressure air blowing, completely eliminating water through dual cooperation. It fundamentally avoids moisture adhesion, mildew and agglomeration of recycled PVC particles, ensuring dry and clean finished products.
7. 180 Type Matching Granulator (220 Alloy Roller Cutter, 3KW Variable Frequency Motor): The high-hardness alloy roller cutter is wear-resistant, impact-resistant and sharp in cutting, adapting to the cutting characteristics of soft and hard PVC materials with flat cuts without burrs or powder scraps. The 3KW variable frequency speed regulation motor can freely adjust the granulation speed and flexibly change particle length according to production demands, producing finished particles with uniform size and consistent appearance that meet market processing standards.
8. 1-ton Stainless Steel Storage Bin (3KW Fan Motor): Adopting 201 stainless steel with closed dust-proof and rust-proof design for easy cleaning. The 3KW high-power fan continuously removes dust, air-dries and dissipates heat, further eliminating floating dust and residual moisture on the surface of finished particles to prevent dust accumulation and moisture deterioration, facilitating batch warehousing, packaging and transportation.
9. National Standard Variable Frequency Distribution Box: Adopting full high-quality national standard electrical components with complete safety protection functions, it supports dual variable frequency linkage speed regulation of main and auxiliary machines, with multiple protection functions of overload, short circuit and phase loss. Featuring regular wiring, stable operation and low failure rate, the whole machine supports one-key linkage start and stop with simple and intuitive operation, enabling quick operation for beginners and adapting to long-term industrial continuous mass production.
10. Core Product Characteristics
11. Dedicated Zoned Temperature Control System: Equipped with 11 groups of independent heating rings for segmented precise temperature control, it perfectly adapts to the thermal sensitivity of PVC, effectively preventing high-temperature carbonization decomposition and low-temperature poor plasticization of materials, ensuring finished products free from yellowing and black spot defects.
12. Double-stage Fine Plasticization Process: Adopting dual processing of primary refining by the main machine and fine refining by the auxiliary machine, PVC materials are evenly mixed and thoroughly melted, producing compact and transparent high-purity particles that greatly improve the market value of recycled particles.
13. Non-stop Hydraulic Screen Changing: The left-right alternating screen changing design eliminates shutdown and strip breakage, greatly improving the effective operating rate of the equipment and solving the problems of shutdown loss and production capacity interruption caused by screen replacement in traditional equipment.
14. High-config Wear-resistant Core Components: The screws and barrels of main and auxiliary machines are strengthened by high-frequency quenching with alloy wear-resistant reinforcement at the feed inlet, resisting impurities, wear and high-temperature deformation, suitable for long-term mass production of complex PVC miscellaneous materials.
15. Closed-loop Water and Dust Removal Design: The integrated water shaking and strip blowing machine and fan dust removal storage system completely solve the adhesion pain point of wet PVC materials, ensuring dry and clean finished particles without agglomeration during storage.
16. Intelligent Variable Frequency Linkage Operation: Full-line variable frequency speed regulation realizes synchronous matching of main and auxiliary machines, feeding and granulation with stable operation and controllable energy consumption. Mass production can be completed with single-person duty, reducing labor costs.

III. Equipment Working Process

Pre-cleaned waste PVC pipes, profiles, films, leftover materials and other materials are uniformly fed into the main unit of the 180 type PVC granulator through a 600×600 variable frequency forced feeder → Precise constant-temperature melting and plasticization via 11 groups of zoned heating rings → Primary extrusion and conveying by the main machine → Secondary fine plasticization and purification by the 165 type auxiliary machine → Non-stop screen changing and impurity removal through the 350 mesh hydraulic head → Uniform extrusion of PVC plastic strips → Gradient water cooling and shaping in the 4-meter extended stainless steel water tank → Complete water removal and drying by the stainless steel water shaking and strip blowing machine → Precise granulation by the 180 type variable frequency alloy granulator → Air drying, dust removal, storage and discharging in the 1-ton stainless steel storage bin. The whole process adopts automatic closed-loop operation with coherent procedures and stable production.

1. Application Fields

Widely used in the PVC plastic recycling and regeneration industry, it can process various waste PVC materials including PVC pipes, plastic steel door and window profiles, soft PVC films, wire and cable sheaths, plastic pipe fittings, foamed PVC materials and injection molding leftovers. The high-quality recycled PVC particles produced can be applied in pipe extrusion, profile modification, injection molding products, rubber and plastic filling, soft plastic product processing and other fields, suitable for large-scale production investment of small and medium-sized recycling plants and environmental protection recycling enterprises.

1. Frequently Asked Questions (FAQ)

PVC granulatorQ1: Why is the 180 type  more suitable for thermally sensitive PVC materials than ordinary granulators?

A: Ordinary granulators have few heating groups and single temperature control, which easily cause local high-temperature carbonization decomposition and low-temperature incomplete plasticization of PVC. Equipped with 11 groups of independent heating rings for segmented precise temperature control, the 180 type PVC granulator is specially adapted to the thermal sensitivity of PVC. Combined with the double-stage low-speed uniform plasticization process, it fundamentally avoids material yellowing, carbonization and unplasticized defects, serving as a customized special model for PVC regeneration.

Q2: Can the equipment process mixed wet and dry waste PVC materials? Will particle adhesion occur?

A: Absolutely yes. The equipment is standardly equipped with a professional integrated water shaking and strip blowing machine, which completely removes water on the surface of plastic strips through dual dewatering of shaking separation and high-pressure air blowing. It effectively solves the core pain points of PVC material moisture-induced adhesion, agglomeration and mildew. Both wet and dry materials can be directly produced without thorough pre-drying, simplifying the production process.

Q3: Is equipment maintenance complicated? Does long-term processing of miscellaneous materials lead to high failure rates?

A: The core screws and barrels of the equipment are strengthened by high-frequency quenching with alloy reinforcement at the feed inlet, featuring excellent wear resistance, carbon deposition resistance and corrosion resistance. It can operate stably for a long time processing PVC miscellaneous materials with sediment and impurities with an extremely low failure rate. Adopting intelligent variable frequency control with simple operation, daily maintenance only includes cleaning the screen and water tank and regular reducer maintenance, with low operation and maintenance costs.

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