The motorized propeller stirrer with container is an essential tool for mixing liquids and suspending solids in various industrial sectors, including pharmaceutical, chemical, cosmetics and food. Its typical configuration includes a motor mounted on top of the tank that drives a rod connected to a propeller-type impeller, ideal for mixing large volumes of fluid.

Main components and dimensions:

• Motor : positioned at the top, it serves to transmit power to the mixing rod.
• Mixing rod : connects the motor to the impeller, allowing the transmission of the rotary movement.
• Propeller type impeller : the heart of the agitation, designed to ensure uniform mixing of the materials inside the container.
• Container : tub or tank that can vary in size, depending on the specific needs of the process.

Sizes vary, with containers ranging from small to very large, capable of holding several cubic meters of fluid.

Mechanical characteristics:

The agitator uses an impeller rotation system that can vary in speed to adapt to the viscosity of the liquid and the need to homogenize mixtures containing solid particles. The choice of impeller materials, such as stainless steel, guarantees resistance and durability over time, especially for applications in aggressive environments such as chemical or pharmaceutical ones.

Usage procedure:

Using the shaker is relatively simple:

1. Loading the container : Fill the tank with the liquid to be treated.
2. Turning on and adjusting : Start the engine and adjust the speed of the impeller based on the viscosity of the fluid and the desired result.
3. Process control : Monitor the mixing process until the required homogeneity is achieved.
4. Discharging the contents : Once optimal mixing has been achieved, turn off the engine and discharge the product.

Matching accessories:

Among the most common accessories we find:

• Drain pipes to facilitate liquid extraction.
• Advanced control systems to regulate speed and monitor the process.
• Interchangeable impellers to adapt the agitator to different types of products.

Mathematical formulas for optimal parameters:

To optimize the operation of the agitator, it is useful to calculate the Reynolds number , which indicates whether the flow is turbulent or laminar, and the power absorbed by the impeller, which is fundamental for sizing the motor. The formula is:

$P$

Where:

• P is the power,
• N_p is the specific power number,
• ρ\rho $\rho$ is the density of the fluid,
• N is the speed in revolutions per second,
• D is the diameter of the impeller.

Workable materials:

The agitator can mix a wide range of materials, including:

• Low and medium viscosity liquids,
• Solid suspension,
• Food and cosmetic products such as creams and serums,
• Chemical products for industrial applications.

Maintenance:

Good maintenance includes regular lubrication of the motor and moving parts, periodic checking of impeller wear and inspection of bearings. Checking the seals is crucial to avoid fluid leaks or contamination.

How to evaluate a good used one:

When purchasing a used agitator, you should check:

• Engine conditions : no abnormal noise.
• Impeller integrity : free of damage or wear.
• Technical documentation : it is essential to have the use and maintenance manual available. Used equipment, if in good condition, represents an excellent choice for reducing costs without sacrificing performance.

Sectors of use:

This type of agitators is widely used in:

• Pharmaceutical industry for the production of solutions,
• Chemistry for mixing reactive substances,
• Cosmetics for the preparation of lotions and creams,
• Food for the production of drinks and sauces.

Purchasing a used motorized propeller stirrer is always convenient, since, in addition to economic savings, it offers reliable and long-lasting performance if well maintained.