Novel high polymer material mixing and stirring machine

Abstract

The invention relates to a novel high polymer material mixing and stirring machine. An upper mixing bin (12) and a lower mixing bin (28) are arranged on an inner cavity of a mixing barrel (7) of the mixing and stirring machine, and the upper mixing bin (12) and the lower mixing bin (28) are each provided with material feeding, stirring, mixing and discharging devices. The novel high polymer material mixing and stirring machine has the beneficial effects that automatic production is achieved, and energy resource consumption is saved; taking a traditional 300-Litree high speed machine as an example, 48% of energy consumption is saved, and the production efficiency is improved by 36%; and in addition, the production process is executed in a full-closed state, uncovering for putting is not needed, and therefore the defect of dust flying is overcome, the environmental protection effect is obvious, and the product quality is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing machinery and equipment, in particular to a novel polymer material mixing machine. Background technique [0002] At present, in the processing of polymer materials, such as the production of functional masterbatches and other composite materials, high-speed mixers are usually used to pre-mix materials under certain process conditions before proceeding to the next step of production. The speed of the stirring paddle in the traditional high-speed mixer is 500-700 rpm. The higher the speed, the better the mixing effect, the higher the dispersion, and the higher the production efficiency. However, the higher the speed, the higher the motor power required. The bigger it is, taking the 300 liter mixer as an example, the driving motor power of the high-speed mixer with a speed of 700 rpm is above 55KW; if the speed is 1000 rpm, it must exceed 75KW. Summarize the main problems that tr...

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Problems solved by technology

Summarize the main problems that traditional high-speed mixers exist in the following points: 1. The power consumption is large, because in the production process, the high-molecular material generates a large amount of frictional heat under the high-speed paddle stirring and cutting shear at a certain heating temperature, When a certain temperature is reached, the polymer material gradually softens to plasticize. After plasticization, the viscosity of the material becomes larger, and the torque becomes larger as the viscosity becomes larger. In order to overcome the large torque, the power of the motor must be increased for production; 2. Environmental protection Poor performance, due to the traditional high-speed mixer production process and equipment structure, it is inevitable to generate dust and exhaust gas.

For example, the production process of color masterbatch is as follows: powder dispersion and coating treatment - mixing of powder and carrier auxiliary materials after coating - discharge after completion of mixing - cooling and packaging for use - extrusion granulation, the most critical in production The first link is the powder coating treatment; the powder coating treatment is to put the toner and other inorganic powders into the barrel of the high-speed mixer, heat and start the motor to stir the powder at high speed; when the powder reaches a certain temperature, it opens Put the coupling agent and dispersant into the cover and wait for a certain period of time. After the powder is covered by the completely melted coupling agent and dispersant, open the cover and put in the carrier resin and auxiliary materials for mixing; because the high-speed machine is working when feeding, the Dust and exhaust gas will escape from the feeding port and affect the environment; 3. Poor degree of automation: the production process of the traditional high-speed mixer is to feed the ingredients according to the formula and stir them to the set temperature, then discharge the materials and then re-batch the materials for production

Therefore, it can only be produced intermittently and cannot be produced continuously, so the degree of automation is poor; 4. Low production efficiency: due to intermittent production in the middle of feeding and discharging, a lot of time is wasted for switching, and other materials are mixed after the powder is processed, which must be carried out step by step.

Therefore, the production efficiency is low

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