Continuous feeding unit for uniform suspension

Abstract

The invention relates to a continuous feeding device for homogeneous suspension. Wherein, connecting an out-feeding pipe below the middle part of a stirring container, arranging a valve on output pipeline of the out-feeding pipe and a overflow device on out-feeding pipe end; arranging circulating devices between the stirring container bottom and top, and between the overflow container bottom and stirring container top respectively. This invention overcomes the defect of generating sedimentation or great concentration gradient on stirring container bottom or pipeline, realizes continuous suspension output and quantitative feeding subsequent stages (such as, polyethylene dissolution system and pharmacy system), and ensures process homogenization.

Description

technical field [0001] The invention relates to a continuous feeding device for storing and discharging uniform suspension, especially a continuous preparation device for polyethylene uniform suspension, which belongs to the field of chemical equipment. technical background [0002] The existing continuous preparation device for homogeneous polyethylene suspension is generally as follows: adding a solvent to the container to moderately swell the polyethylene, stirring to obtain a polyethylene suspension, and feeding the suspension into the container at normal temperature and pressure. in a twin-screw extruder. Conventional polyethylene suspension preparation and feeding devices, in order to make it possible to obtain a relatively uniform suspension liquid, often add a stirring device in the container (or hopper), and finally rely on gravity to output the suspension liquid from the bottom of the container. In the feeding and output device (extruder), although the uniformity ...

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Problems solved by technology

[0004] Chinese invention application patent CN1190137A discloses a continuous preparation method of a homogeneous solution of ultra-high molecular weight polyethylene, which adopts a method that is easy to swell polyethylene, and then transports it to one of two alternately used containers for stirring. Output through the output port at the bottom of the container, there is still a concentration gradient in the container, and there is also sedimentation at the bottom, so the suspension cannot be uniformly and continuously output, and the uniformity of the product in the subsequent process cannot be guaranteed.

[0005] At the same time, all the above-mentioned preparation and feeding devices of polyethylene suspension are discharged through the outlet at the bottom of the container by using the gravity of the liquid, and are directly supersaturated fed into the twin-screw extruder, and the supersaturated suspension is discharged in the pipeline. Settling will occur again, resulting in inhomogeneity of products in subsequent processes

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