Clean and environment-friendly multi-screw desulfurization equipment for production line for preparing reclaimed rubber

Abstract

The invention provides clean and environment-friendly multi-screw desulfurization equipment for a production line for preparing reclaimed rubber, and belongs to the technical field of reclaimed rubber production.The equipment is characterized in that a first transmission shaft group is arranged in a first inner shell and comprises at least three first transmission shafts arranged side by side; each first transmission shaft is provided with a plurality of groups of meshing type screws and desulfurization shearing blocks which are combined in a building block manner; a first cooling channel is arranged between the first transmission shaft and the meshing type screw rod, the first transmission shaft is connected with the meshing type screw rod through a spline, a plurality of second cooling channels are arranged at the spline connection position, and each second cooling channel is communicated with the first cooling channel; and cooling channels with the same structure are arranged between the first transmission shaft and the desulfurization shearing block. According to the invention, special cooling channels are arranged between the transmission shaft and the meshed screw rod and between the transmission shaft and the desulfurization shearing block, so that the temperature in the desulfurization process is controllable and stable, under-desulfurization or over-desulfurization is avoided, and the quality stability of reclaimed rubber is guaranteed.

Description

technical field [0001] The invention relates to the technical field of reclaimed rubber production, in particular to a clean and environment-friendly multi-screw desulfurization equipment used for preparing a regenerated rubber production line. Background technique [0002] my country's tire-based rubber consumption continues to grow rapidly, making China the world's largest producer of waste rubber. The comprehensive utilization of waste rubber is the core of the rubber industry's circular economy. Environment matters. Using physical, chemical or biological methods to open the three-dimensional cross-linked network of waste rubber and prepare reclaimed rubber is currently the most important way to recycle waste rubber in my country. The ideal regeneration is to only break the cross-linked bonds, while the main chain of rubber molecules ( C-C molecular chain) remains intact. According to incomplete statistics, the output of reclaimed rubber in my country reached about 3 mill...

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Problems solved by technology

[0004] Among them, the desulfurization equipment has the traditional dynamic oil-water desulfurization tank, which has the following disadvantages: 1. The process temperature of the desulfurization tank is between 270-310 °C; 2. There is sewage discharge in the production process; 3. There is open unorganized discharge of waste gas; 4 .There is a danger of explosion in the high-pressure tank; 5. Non-continuous production

[0005] In the existing technology, continuous production can be realized by replacing the desulfurization tank with single-screw desulfurization equipment, but the desulfurization is still purely based on the temperature, which is consistent with the desulfurization tank, which is between 270-310°C, and the rubber powder is unevenly heated due to no turning over. It is prone to the risk of uneven desulfurization; there is also the problem that the time through the screw is short and the risk of Mooney rebound is large

[0006] In the existing technology, the desulfurization tank is replaced by multi-screw desulfurization equipment, which can realize continuous production and slightly reduce the desulfurization temperature. However, high temperature is generated at the moment of shearing the shear block, which requires high cooling. Water is only passed through the core of the screw, and cooling is easy due to There is a risk of overshooting if not in time

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