There are many types of mixers. Different types of mixers have different performances for different materials and industries. The mixing process will also be very different, as well as the effect on the finished product. Today, Tongda Heavy Industry, an organic fertilizer equipment manufacturer, will introduce the working principles of various types of mixers.

Single-shaft horizontal mixer

This type of mixer is intermittent discharging. Its feeding and discharging systems are cyclical in a certain period. The material enters the mixing bin and is fully mixed before the discharging system is opened to discharge the material. The continuous discharging is to mix the material while it is moving from the feed port to the discharge port. Therefore, in terms of mixing quality, the mixing quality of the material by the intermittent mixer is better than that of the continuous mixer.

In the process of mixing and stirring, in order to achieve better mixing and stirring effects and save energy, it is required that the material cannot be thrown up in a chain during mixing and stirring. The movement of the material is affected by the rotating spiral blades. The movement of the material is not simply a linear motion along the spiral axis, but a reciprocating spatial motion along the spiral axis. The material is affected by the friction between the spiral blades and the friction between the materials.

During the entire mixing and stirring process, when the spiral speed exceeds a certain speed, the material will jump in the direction perpendicular to the axial direction due to excessive centrifugal force. The weakened axial push will affect the convection of the material, thereby reducing the uniformity of material mixing.

Double-shaft mixer

Compared with the single-shaft horizontal mixer, the double-shaft organic fertilizer mixer belongs to continuous discharging. It is suitable for use in large-scale production, because the single-shaft horizontal mixer cannot provide enough mixing materials for production due to its own volume limitations and mixing time limitations. In this case, the double-shaft mixer that can continuously discharge plays a great role.

Similar to the double-shaft screw conveyor, the two horizontally arranged augers inside the machine are the main working parts of the mixer. The motor transmits power through the augers shaft to drive the augers to rotate. The augers are fixed to the augers shaft through a screw rod. The angle can be adjusted according to production needs to control its discharging speed and mixing quality. The centering design of the double-auger spiral blades realizes multi-directional circulation such as axial horizontal stirring and circular motion of materials, and the mixing forms include various mixing processes.

The two counter-rotating auger shafts drive the blades to make relative rotational motion, so that the mixed material can achieve tangential and axial compound motion. The stirring device enables the various components of the mixed material to be sheared, kneaded and evenly mixed. The components of the discharged materials are all granular or powdery, which is an adhesive material with good scattering properties, which is conducive to the later granulation.

Vertical mixer

Unlike the horizontal mixer that uses a cylindrical gear reducer, the reducer of the vertical organic fertilizer mixer uses a vertical cycloidal pinwheel reducer. The mixing bin is a low cylindrical structure, and the material is spread into a thin layer, so the power required is not very large, which is more suitable for the mixing of fertilizer raw materials.

Since fertilizer raw materials are easy to absorb moisture and have a certain viscosity, they are easy to stick to the wall of the pan during production, forming a dense material bonding layer, causing large friction inside the machine, and making the mixing mixer bear too much load. In order to avoid causing motor overload and affecting production, the feeding port is equipped with a movable protective net, which prevents too much material from entering the mixer on the one hand, and serves as a safety protection measure to prevent accidents during operation.

The inside of the silo can also be lined with plastic plates to reduce material adhesion and friction, and it is not easy to cause the pan to rust, which extends the service life of the whole machine.