The vertical disc mixer (also known as a vertical mixer) is a piece of mechanical equipment featuring a vertical disc as its main component; it achieves material mixing through the high-speed turning action of mixing teeth or mixing arms. This equipment is widely used for raw material mixing processes in industries such as organic fertilizers, compound fertilizers, chemicals, mining, and building materials.

Working Principle of the Vertical Disc Mixer

The core working principle of the vertical disc mixer lies in the combination of “centrifugal throwing”and “gravity-driven dispersion” Upon startup, the motor drives a high-torque cycloidal pin-wheel reducer, which in turn rotates the main shaft; mixing teeth mounted on the shaft rotate to agitate the material. The main body of the equipment consists of a vertically positioned rotating disc, with sets of lifting blades arranged at specific angles on the disc's base. As the motor drives the disc to rotate at high speed, material entering from the top inlet is instantly lifted to a height by the blades and subsequently falls in a parabolic trajectory under the influence of gravity. During this process, the material particles undergo extensive collision, intermingling, and dispersion, causing raw materials of varying densities and particle sizes to engage in intense relative motion within a three-dimensional space.

Unlike horizontal mixers that rely on forced propulsion via ribbon agitators, the vertical disc mixer utilizes the shearing interaction between the rotating base and fixed mixing teeth. This creates complex vortex motion within the disc, achieving comprehensive mixing through a process of turning and tossing that moves material from bottom to top and from the center outward. The material's residence time within the disc can be precisely controlled by adjusting the disc's rotational speed and the discharge outlet height, enabling a mixing uniformity of over 98%.

Primary application scenarios for vertical disc mixers

Pre-treatment stage of organic fertilizer production lines: Pre-mixing fermented manure (chicken, sheep, or cattle) with straw powder, bentonite, fermentation strains, and medium/trace elements;

Blending of NPK compound fertilizer powders: Uniformly mixing various nitrogen, phosphorus, and potassium raw materials with fillers and additives to supply a suitable mixture for downstream double-roller extrusion granulators;

Processing and blending of food waste and biogas residue: Mixing biogas residue with straw and humus soil to produce organic fertilizer for agricultural use;

Raw material proportioning and mixing processes for animal feed, soil conditioners, and humic acid fertilizers.

What are the advantages of the Huaqiang vertical disc mixer?

1. Compact footprint: The Huaqiang Heavy Industry vertical disc mixer features a compact structure that occupies minimal space, facilitating the layout of organic fertilizer production lines and saving factory floor space.

2. Wear-resistant and anti-stick design: The mixing teeth are made of wear-resistant alloy, and the disc is lined with anti-stick material; this prevents sticking to the walls, clumping, or material buildup around the shaft when processing high-moisture, sticky raw materials such as manure and powdered straw.

3. Excellent mixing performance: Multi-layered mixing teeth create a convective kneading action, ensuring rapid mixing and high uniformity of ingredients, which improves the quality of subsequent granulation.

4. Energy-efficient and quiet operation: Equipped with a cycloidal pin-wheel reducer, the machine operates quietly with low power loss, resulting in reduced daily electricity costs.

5. Easy cleaning and maintenance: The disc design eliminates mixing dead zones and minimizes material residue during discharge; cleaning is quick when switching raw material formulas, helping to prevent cross-contamination of fertilizer materials.

6. Durability and versatility: The equipment is easy to disassemble and service, experiences few breakdowns, supports long-term continuous operation, and entails low maintenance costs, making it ideal for batch processing in fertilizer plants.