High speed shearing grinder for modified bitumen

Abstract

Modified asphalt high-speed shear mill, which includes a high-speed motor, a dynamic cutting ring, a static cutting ring and a pump casing, the dynamic cutting ring is connected to the high-speed motor connecting shaft, the static cutting ring is installed on the pump casing, and the pump casing There is a feed inlet and a discharge outlet, and the feature is that the centrifugal self-priming blade is also connected to the connecting shaft of the high-speed motor, and the periphery of the centrifugal self-priming blade is the static knife hole of the static cutting ring and the moving knife of the dynamic cutting ring in turn. hole. When the high-speed motor rotates, the self-suction vane presses the material to the static knife hole, and at the same time, the self-suction vane and the dynamic cutting ring complete two shearing processes with the static cutting ring. According to the process and time of dissolving SBS in high-temperature asphalt, the invention cuts and refines SBS to speed up the dissolution process and avoid a large amount of cutting heat and extreme stretching, thereby saving energy, increasing production, stabilizing quality, and saving energy. invest.

Description

technical field [0001] The invention relates to a processing equipment for asphalt, an important material of roads. Background technique [0002] Along with the construction of China's road network, in the past ten years, the highways and fast lanes around the city in various provinces in China have been completed and opened to traffic at an average rate of 200 kilometers per year, making the annual consumption of asphalt, an important material for road construction in my country, exceed 3 million tons. At the same time, the country also attaches great importance to the quality and service life of the road surface. [0003] The existing mills for the production of modified asphalt are typically colloid mills with toothed discs at the shaft end, which cut the material when it enters the gap between the teeth. Meet the requirements. However, without self-priming ability, it needs an external input pump with the same flow rate to work. It will generate a lot of cutting heat du...

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Problems solved by technology

[0004] In fact, the main production difficulty in the production of modified asphalt is how to uniformly disperse and dissolve SBS in the asphalt. melting effect, but the dissolution of SBS takes a certain amount of time. In other words, if a very fine colloid mill is used, it cannot be directly loaded into the car after grinding. Therefore, it is not necessary to grind SBS too finely in production. When asphalt When the temperature reaches 185°C, the SBS mixed in is already a softened rubber body at high temperature. Using a colloid mill with too fine a gap will generate a lot of cutting heat and extreme stretching for the softened rubber body, resulting in unstable product ductility index

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