Automatic devulcanizing and plasticizing device and method for waste rubber powder

Abstract

The invention provides automatic devulcanizing and plasticizing device and method for waste rubber powder. In the automatic devulcanizing and plasticizing device, a plastic highly stirring machine is applied to the automatic devulcanizing and plasticizing device for the waste rubber powder, which can realize high-speed stirring, enable ingredients to be mixed sufficiently and uniformly and realize the bulking, the immersing and the swelling of raw materials; a thermal reaction device comprises single or a plurality of plasticizing units; each screw material rod of a double-screw conveying device inside the thermal reaction device feeds by adopting differential motion; and if the thermal reaction device comprises a plurality of plasticizing units, the plasticizing units are arranged in a vertical spacing way, and each plasticizing unit is provided with an independent heating device which has short heating time and ensures the reaction to be sufficient. Because each screw material rod feeds by adopting the differential motion, the screw material rods are enabled to have self-cleaning function; meanwhile, the plasticizing units adopt a modular design, which enables the plasticizing units to be freely collated according to the different requirements of users on devulcanizing depth, thereby fully reducing equipment manufacturing cost and product production cost; and because of the adoption of a vertical spacing distribution structure, the equipment can be both expanded and conveniently maintained and overhauled.

Description

technical field [0001] The invention relates to an automatic sulfur breaking plasticizing device for plasticizing waste rubber powder in the field of waste rubber recycling and processing, and also relates to a plasticizing method for automatically breaking sulfur of waste rubber powder. Background technique [0002] At present, there are two main ways to apply vulcanized rubber powder from waste tires: one is to directly make vulcanized rubber powder into various products or add it to other materials to mix and process it into various products or applications; the other is to process vulcanized rubber powder into Reclaimed rubber that can be vulcanized again to replace virgin rubber in products. [0003] Due to the increasing scarcity of natural resources, the market for reclaimed rubber is growing, and the main link in the production of reclaimed rubber is the plasticization process of vulcanized rubber. Previously, the vulcanized rubber powder desulfurization and plastic...

AI Technical Summary

Problems solved by technology

There are many defects in this rubber powder desulfurization and plasticization device and method: ① high pressure, there are potential safety hazards; ② generation and discharge of waste water and waste gas; ③ continuous production is impossible, production capacity is low, and labor intensity is high; ④ energy consumption is high, production High cost; ⑤ The product quality is unstable and difficult to control; ⑥ The rubber powder after treatment must be dehydrated, and the dehydration process is complicated, the equipment investment is large, and the energy consumption is high

Compared with the desulfurization of the dynamic desulfurization tank, the desulfurization of the device and method has its progress, such as: normal pressure production, no waste water and waste gas discharge, continuous production, low equipment investment, etc.; but there are still shortcomings: the stirring device adopts a horizontal mixer, and the speed is low. , usually less than 100r / min, and the activator, softener and materials cannot be fully and evenly mixed, resulting in incomplete reaction; the thermal reaction device is a closed whole, resulting in abnormal and uneven heating of the heat medium, which is very easy to cause combustion accidents

Due to uneven heating, the reaction of the material is insufficient, and there is a dead angle in the conveying material, which causes the carbonization of the rubber powder in the dead angle, and as the thickness of the carbon deposit increases, it is forced to be discharged and mixed in the product, resulting in unstable product quality or even waste; the equipment is redundant. , poor flexibility; poor expandability of equipment, closed structure or no consideration of structural expansion, poor versatility; failure of one part of the equipment must be disassembled for repair or scrapped

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