How to solve the problem of material blockage in continuous mixer?

During the operation of continuous mixing machines, material blockage is a common problem that can be solved through equipment design and improvement, optimization of operating parameters, material pretreatment, daily maintenance and upkeep. The specific method is as follows:

Daily maintenance and upkeep

Regular cleaning: Establish a strict equipment cleaning system, and promptly clean up residual materials, adhesive deposits, etc. in the mixing room after the equipment is shut down. Special cleaning tools and solvents can be used to ensure that every corner of the mixing chamber is thoroughly cleaned.

Check the wear condition of components: Regularly inspect the wear condition of the rotor, mixing chamber wall, seals and other components of the mixer. For severely worn components, timely replacement is necessary to ensure the normal operation of the equipment and smooth transportation of materials.

Equipment design and improvement

Optimizing rotor structure: The rotor is the core component of the internal mixer, and its structure is crucial for the conveying and mixing effect of materials. A new type of rotor structure can be adopted, such as using a rotor with a large helix angle, which can increase the axial conveying capacity of materials in the mixing chamber, reduce the accumulation of materials in local areas, and thus reduce the possibility of blockage.

Reasonably design the mixing chamber: optimize the shape and size of the mixing chamber. Appropriately increasing the volume of the mixing chamber can reduce the filling rate of materials and provide more space for them to flow and mix. At the same time, optimize the structure of the discharge port in the mixing chamber, increase the size or change the shape of the discharge port, so that materials can be discharged more smoothly.

Install a forced feeding device: Install a forced feeding device, such as a screw feeder, at the feed inlet of the mixer. By rotating the spiral feeder, the material is evenly and continuously fed into the mixing chamber to avoid material blockage caused by uneven feeding.

Material pretreatment

Drying treatment: For materials with strong moisture absorption, drying treatment should be carried out before entering the mixer to reduce the moisture content of the material. Moisture can increase the viscosity of materials, which can easily lead to material clumping and blockage.

Crushing and screening: For block shaped or larger particle size materials, they are first crushed and screened to make their particle size uniform and meet the feeding requirements of the internal mixer. This can prevent large particles from getting stuck at the feed inlet or mixing chamber, causing blockages.

Optimization of operating parameters

Adjust the speed and temperature: Adjust the rotor speed of the mixer reasonably according to the characteristics of the material. For materials with high viscosity, reducing the rotational speed appropriately can reduce the adhesion and agglomeration caused by excessive shearing of the material. At the same time, control the temperature during the mixing process to avoid the increase of material viscosity and blockage caused by high temperature.

Control the feeding amount: Strictly control the feeding speed and amount of materials to maintain the uniformity and stability of the feeding. A feed metering device can be installed to accurately control the amount of feed each time, preventing excessive feed from causing material accumulation and blockage in the mixing chamber.