A coarse sieve shaker is a machine used in the laboratory to analyze the particle size structure of granular and powdery materials. It is designed to separate particles based on their size by allowing them to pass through a series of specified chambers with mesh filters. The machine then agitates the sample to complete the separation.
Coarse sieve shakers are durable and versatile, suitable for use in both lab and field settings. They can handle separations of coarse materials between No. 4–No. 100 (4.75mm–150µm) size ranges. The shaker imparts an effective circular sifting motion to the sieves via a 1/4hp motor.
When selecting a sieve shaker, two factors should be considered: the material being tested and the diameter of the sieves. Different materials and particle sizes require different shaker models to achieve accurate and consistent results. The shaker chosen should be compatible with the characteristics of the sample material to enhance accuracy and repeatability.
There are various sieve shaker models available on the market. Some examples include:
1. EFL Sieve Shaker: This is a heavy-duty shaker suitable for wet or dry sieving. It can be mounted on the floor or table for ease of use. It has a low noise level, making it suitable for designated test areas. The shaker features an electromagnetic power system that reduces weight while ensuring reliability under stressful testing conditions.
2. Minor Sieve Shaker: This portable shaker is designed with cost-effectiveness in mind. It has features typically found in more expensive models. The shaker has an electromagnetic drive and is portable, allowing for convenient testing of materials anywhere in the laboratory. Different voltage options are available to accommodate testing requirements.
Using a sieve shaker offers several advantages over manual sieving methods. It improves accuracy, consistency, and repeatability in particle sizing. It also saves testing time by automating the agitation of particles for separation. Additionally, sieve shakers can be used for both liquid and solid samples.
To streamline the sieving process, there are accessories available for collecting, weighing, and calculating sieve fractions. These accessories help to make the process more efficient and less time-consuming.
In summary, a coarse sieve shaker is a machine used in the laboratory to analyze the particle size structure of granular and powdery materials. It automates the agitation and separation of particles based on their size. Selecting the right sieve shaker model is important for achieving accurate and consistent results, taking into account the material being tested and the diameter of the sieves.
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