Product Details

Rubber banbury mixer is also named rubber banbury mixer is mainly used in rubber mixing and plastic refining.

Rubber banbury mixer is mainly composed of mixing chamber, rotor, rotor seal device, feeding press device, unloading device, transmission device and machine base.

When the internal mixer works, the two rotors rotate relatively to each other, and the material from the feeding port is clamped into the roll gap by the rotor’s compression and shear. Materials are mixed or plasticated under certain pressure, controllable temperature, which makes high production efficiency and obtains excellent stale quality. After material mixing well, the mixed material will drop down from bottom gate of mixer.

1.Different type of rotors can satisfy the mixing technical requirement.

2.Rotor chamber, discharge door and ram are circulation-cooled. With temperature control unit, it can guarantee the quality of mixed rubber compound.

3.Rotors, mixing chamber, and other parts which contact with the material are overlayed with wear-resistant alloy.

4.Pneumatic or hydraulic type top mounted ram is optional.

5.The floating weight is falling type, driven by gear and hydraulic oil tank with good sealing performance.

6.Various driving system matches the customers' requirement.

7.The advanced PLC control technology and the intelligent display terminal are used for the control system.

8.Maintenance friendly and long-life service.

Internal mixer has some different classifications according to their characteristics:

-      According to the structure of the rotor, it can be divided into two types: tangential type and intermeshing type;

-      According to the cross-section shape of the rotor, it can be divided into oval shape, triangular shape and cylindrical shape;

-      According to the rotor speed ratio, it can be divided into two types: synchronous type and asynchronous type;

-      According to the number of rotor edges, it can be divided into two edges, three edges, four edges, five edges, six edges, eight edges, etc.;

-      According to the position of the transmission device, it can be divided into left drive type and right drive type (It is called right drive internal mixer if the transmission device on the right side of the operator);

-      According to the rotor speed, it can be divided into single-speed, two-speed, four-speed, and stepless speed regulation.

1. Tangential rotor type mixer 

   When the tangential rotor mixer is mixing, the main mixing effect occurs at the gap between the rotor edge and the inner wall of the mixer.

   There are shearing, stirring and squeezing effects between the rotor edge and the inner surface of the mixing chamber wall. When the rubber compound is kneaded in the mixing chamber, the flow state is roughly divided into turbulent flow and steady flow. In the turbulent region, low shear rates and shear stress are good for distributive kneading. In the flow stabilizer, the high shear rate and shear stress crush the agglomerate, which is conducive to dispersive kneading. The gap between the rotor edge and the inner wall of the mixing chamber is a steady flow area where high shear stress occurs. On any axial section, a continuously changing gap can be formed between the rotor and the inner wall of the mixing chamber, and the smallest gap occurs between the rotor edge and the inner wall of the mixing chamber. Due to the rotation of the rotor, the velocity gradient generated by the rubber compound changes every moment, sometimes it may increase by dozens of times. When the rubber material passes through the gap, it is subjected to strong extrusion and stirring, which is similar to the effect of the roll gap of the open mill on the rubber material, but the speed gradient of the rubber material between the rotating rotor and the fixed chamber wall is larger. The velocity gradient is the largest at the edge, where the compound is subjected to the strongest shearing action. The angle formed by the rotor edges and the mixing chamber wall is very small, which is convenient for the rubber to pass through while kneading in the gap between the rotor edge and the mixing chamber wall, so the kneading effect is better than open mixer.

2. Intermeshing rotor type mixer 

   The rotor shape design and mixing principle of the intermeshing rotor is similar with tangential rotor. The fundamental difference between the intermeshing rotor and the tangential rotor is that the outer diameter of the intermeshing rotor is greater than the center distance of the two rotors, while the outer diameter of the tangential rotor is smaller than the center distance of the two rotors. The intermeshing rotor not only absorbs the high rubber mixing characteristics of the tangential rotor and the mixing chamber, but also applies the roller effect of the open mill to the two oppositely meshed cylindrical rotors, thus making up the deficiency of insufficient kneading between two tangential rotors.

   Shearing, stirring and squeezing between the outer surface of the rotor and the inner wall of the mixer. A minimum gap is also formed between the edges of the rotor and the inner wall of the mixing chamber. When the rubber material passes through the gap, it is subjected to strong extrusion and stirring. Between the rotating rotor and the fixed chamber wall, the velocity gradient of the rubber compound is larger, and the velocity gradient at the edge peak is the largest, where the rubber compound is subjected to the most intense shearing action. The effective width of the edge peak of the intermeshing rotor is larger than that of the tangential rotor, and the rubbing effect between the edge peak and the inner wall of the mixer is better than that of the tangential rotor. Among them, the long rib has the effect of axial movement of the rubber compound, while the short rib mainly plays the role of dispersing and distributing mixing.
   

1. Personalized Service with Rapid Response Times.

2. Provide professional reply in fluent English. 

3. Sincerely and seriously treat each of our customers.

4. Guarantee our machine with good quality.

5. On-time delivery.

6. One year warranty.

7. Whole lifetime technical support.

8. Favorable price of spare parts.

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