The mixer is a rotor, a specific shape and has a relative rotation in the closed state of adjustable temperature and pressure of clearance of the polymer material plastication and mixing machine, mainly by the mixing chamber, a rotor, a rotor sealing device, feeding pressure device, a discharging device, transmission and chassis components.
The sealing rubber mixing machine is a high strength mixing device which is developed on the basis of the mixer. Since 1916 real Banbury (Banbury) type mixer, the mixer power was gradually known by people, it is the process of mixing ratio show excellent mixing machine has a series of characteristics, such as: in the rubber mixing capacity, short time, high production efficiency; overcome dust emissions, reduce the loss of the complexing agent, improve product quality and work environment; safe and convenient operation, reduces the labor intensity; beneficial to realize mechanical and automation. Therefore, the appearance of rubber sealing machine is an important achievement of rubber machinery, and it is still a typical and important equipment in the process of mixing and mixing.
Basic structure of closed rubber mixing machine:
The sealing rubber mixing machine is generally composed of a mixing chamber, two relatively rotating rotors, an upper top bolt, a lower top bolt, a temperature measuring system, a heating and cooling system, an exhaust system, a safety device, a discharging device and a recording device. The surface of the rotor has a spiral convex edge, the number of the two edges, the edge of the prism, the six edges, and so on, the geometry of the cross-section of the rotor is triangular, cylindrical or oval, there are two types of tangential and meshing type of. The temperature measurement system is composed of thermocouple, which is mainly used to measure the change of temperature in the mixing chamber. The heating and cooling system is mainly used to control the temperature of the surface of the rotor and the mixing chamber.
Working principle of closed rubber mixing machine:
The mixer work, two rotor relative rotation, the material from the feed inlet will be clamped into the gap by extrusion and shearing of the rotor through the roll gap after hit top to sharp edge is divided into two parts, respectively along the wall and go back to the room before and after the rotor gap between the roll gap above.
In a week around the rotor flow, shear and friction materials are everywhere, the compound rapid temperature rise, reduced viscosity increased with the wetting agent in the rubber surface, the rubber and compound full contact surface. The complexing agent is connected with the rubber material through the gap between the rotor and the rotor, the rotor is connected with the upper and the lower crown, and the inner wall of the interior wall is sheared and broken.
At the same time, the convex edge of the rotor causes the rubber material to move along the axial direction of the rotor, so as to stir and mix. The complexing agent is repeatedly broken, the rubber material repeatedly generates deformation and the deformation is restored, and the continuous stirring of the convex ribs of the rotor makes the complexing agent evenly dispersed in the rubber material and reaches a certain degree of dispersion.
Due to the sealing rubber mixing machine when the shear effect of the rubber material is much larger than the opening machine, the high temperature, so that the sealing rubber mixing machine is much higher than the efficiency of the mixer.