Low Price Rubber Internal Mixer / Rubber Kneading Machine Mixing Chamber Is 55L/75L/110L/200L

About kneading machine:

55L rubber mixer is an important equipment for mixing and plasticizing rubber and related materials. The following is a detailed introduction about it:

1. Basic structure:
- Mixing chamber: It is the main space for rubber mixing. Its capacity is 55 liters and has enough space to accommodate rubber raw materials and various additives for sufficient mixing and refining. The inner wall of the mixing chamber is usually specially treated, such as hard chrome plating, etc., with good wear resistance and corrosion resistance, ensuring that the rubber will not be contaminated during long-term use, and it is also easy to clean.
- Rotor: It is the core component of the internal mixer. Its shape and design play a key role in the mixing effect of rubber. The rotor usually has spiral ridges, which can produce strong shearing, extrusion and stirring effects on the rubber during rotation, so that the rubber is fully mixed with various additives, and the ridges and end faces of the rotor are generally welded with wear-resistant hard alloy to improve its wear resistance and service life.
- Top bolt: also known as pressure weight, used to apply pressure to the rubber in the mixing chamber, enhance the friction and shear force between the rubber and the rotor, and thus improve the mixing effect. The pressure of the top bolt can be adjusted according to different rubber formulas and process requirements.
- Turning mechanism: enables the mixing chamber to turn over when needed to facilitate feeding and unloading. The turning angle is generally around 110°-140°. This design is convenient for connecting the upper and lower processes of the production process, and for observing and cleaning the mixing chamber and rotor.
- Heating and cooling system: This system is used to control the temperature in the mixing chamber to meet the requirements of different rubber processing technologies. Heating methods usually include steam heating, thermal oil heating, etc., and cooling methods generally use water cooling. Through precise temperature control, the rubber can be mixed at a suitable temperature to ensure the quality and performance of the rubber.
- Electronic control system: used to control the operation of the internal mixer, including the start, stop, speed adjustment of the motor, and the monitoring and control of parameters such as temperature and pressure. The electronic control system usually adopts automatic control technology such as PLC, which has the advantages of simple operation, high control accuracy and strong reliability.

2. Working principle: Under specific temperature conditions (depending on the rubber raw materials and process requirements, some need to be heated, and some need to be cooled), the rubber raw materials and various additives are added to the mixing chamber. Then, the motor is started to drive the rotor to rotate. The rotor causes shear and pressure on the material through different speeds and speed ratios, thereby breaking the molecular chain of the rubber and increasing the wettability of the rubber on the surface of the compound. In an environment where the plasticizing temperature is reached, the rubber raw materials and additives are mixed to achieve the purpose of mixing, so that various additives can be fully dispersed in the rubber and the components are evenly distributed.

3. Performance parameters:
- Drive motor power: usually about 75 kilowatts, which can provide sufficient power for the rotation of the rotor to ensure that the internal mixer can effectively mix the rubber.
- Output: The output of each batch is generally about 55-70 kilograms. The specific output will be affected by factors such as the properties, formula and process parameters of the rubber raw materials.
- Air pressure (if any): Some 55L internal mixers may use an air pressure system to assist the pressurization of the top bolt. The commonly used air pressure is generally around 0.6-0.8MPa.

4. Advantages:
- High production efficiency: Compared with traditional rubber processing equipment such as open mills, internal mixers can complete the mixing and plasticizing process of rubber in a shorter time, greatly improving production efficiency.
- Uniform material dispersion: Through the strong shearing and extrusion of the rotor and the pressurization of the top bolt, the rubber can be fully mixed with various additives, and the material dispersion is uniform, thereby ensuring the quality of rubber products.
- Easy operation: Modern 55L internal mixers are usually equipped with advanced electronic control systems, which are simple and convenient to operate. Operators only need to undergo certain training to master them.
- Good working environment: The internal mixer is a fully enclosed structure, which can effectively reduce the leakage of dust and exhaust gas generated during rubber processing, improve the working environment, and reduce the health hazards to operators.

5. Application range: 55L rubber mixer is widely used in rubber products industry, such as tire factory, cable factory, tape and hose factory, rubber shoe factory, seal factory, calcium plastic product factory, etc. At the same time, it is also suitable for mixing production in factories of paint, dye, medicine, magnetic tape, film, etc.

Technical Parameters: