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What is the working principle of an EPDM rubber extruder?

Time：

2020-04-11

The de‑stone‑removal machine for reclaimed rubber manufactured by Hebei Shuangda serves as the pioneering equipment for continuous high‑temperature, atmospheric‑pressure de‑stone removal, and is a prerequisite for ensuring stable quality and superior performance of reclaimed rubber products. It enables rubber powder, activators, plasticizers, and other additives to undergo uniform blending within a three‑dimensional spatial mechanism under precisely controlled conditions. Following agitation by the mixing system, the rubber powder proceeds to plasticization with the plasticizer, significantly enhancing product specifications and stability. The machine employs a high‑temperature, atmospheric‑pressure plasticization principle, electromagnetic heating, a continuous production mode, and an automated control system. Departing from conventional design concepts, it features a single‑screw, split‑type configuration that ensures smooth material flow, even heat distribution, stable product performance, and trouble‑free operation.

The de‑stone machine for reclaimed rubber manufactured by Hebei Shuangda serves as the pioneering equipment for continuous high‑temperature, atmospheric‑pressure de‑stoning, and is a prerequisite for ensuring stable product quality and superior performance. It enables rubber powder, activators, plasticizers, and other additives to undergo uniform blending within a three‑dimensional spatial structure under precisely controlled conditions. Following agitation by the mixing system, the rubber powder proceeds to plasticization with the plasticizer, significantly enhancing both product specifications and stability.

It employs high-temperature, atmospheric-pressure plasticization, electromagnetic heating, a continuous production mode, and an automated control system. Featuring a conventional design concept with a single-screw, split‑type configuration, it ensures smooth polymer powder flow, uniform heating, stable product performance, trouble-free operation, and simple handling.

Rubber stone‑removal machine application range: 10–40 mesh stone‑removed rubber powder, butyl rubber powder, and EPDM rubber powder (from tires, rubber shoes, and waste rubber).

Working principle of the rubber de‑stone machine: Based on the “rubber stone‑passing reversion” mechanism, the waste rubber powder—premixed with additives according to a specified formulation—is heated during screw conveyance, enabling it to undergo “reversion and regeneration” under atmospheric pressure and high temperature conditions.

Requirements for equipment in the rubber stone-removal process:

1. The equipment shall operate stably, and its installation, operation, and maintenance shall be simple and convenient.

2. The heating device operates stably, with a defined temperature rise range and an adjustable, controllable operating temperature.

3. The material is heated uniformly and consistently;

4. Stone breakage? Plasticization time;

5. Relatively enclosed fractured-rock–plasticized space;

6. Discharge cooling unit.

Features of the rubber stone-removal machine

1. Operates stably, with simple and convenient installation, operation, and maintenance;

2. The electromagnetic heating device operates stably, with a controllable temperature rise and adjustable operating temperature; the temperature fluctuation is within ±1.5℃.

3. The outer tube and the helical shaft rotate in opposite directions, ensuring uniform and stable heating of the rubber powder and reducing the heating time.

4. Reliable sealing, in accordance with the “rubber reversion and regeneration” process requirements;

5. Two-stage circulating cooling; discharge temperature ≤ 60°C.

6. High degree of automation, labor-saving, and low operating costs;

7. This equipment can operate independently or in parallel, sharing a common feeding and discharging system to meet increased production capacity requirements.

Hebei Shuangda Rubber & Plastics Machinery Co., Ltd. is a modern enterprise integrating research and development, manufacturing, and sales of complete sets of extrusion equipment for rubber, silicone, and plastics. The company’s main products include rubber extruders, rubber hose extrusion lines, three‑layer composite sealing strip extrusion lines, silicone sealing strip production lines, plastic sealing strip production lines, plastic profile production lines, plastic pipe production lines, elastomer extruders, and other extrusion equipment, as well as production machinery for engineering seals, automotive seals, wire and cable applications, air‑conditioning hoses, braided hoses, automotive hoses, waterstop strips, and related products.