The screw sand washer is a type of sand washing equipment that uses a screw to remove impurities from sand and gravel materials. It was invented to efficiently clean and wash sand and gravel, particularly for construction and industrial applications. The exact invention and development timeline of the screw sand washer may vary, but here is a general overview of its invention:
Early history: The concept of washing sand and gravel to remove impurities is not new and has been used for centuries using manual methods such as hand-washing or using simple tools like shovels and screens. However, the invention of mechanical sand washing machines like the screw sand washer can be traced back to the late 19th or early 20th century.
First patents: The first patents related to sand washing machines were filed in the late 19th and early 20th centuries. For example, U.S. Patent No. 460779A, filed in 1891 by William W. Higley, describes a sand washing machine with a screw conveyor system to remove impurities from sand and gravel. Another early patent, U.S. Patent No. 926732A, filed in 1909 by Henry B. Sturtevant, describes a sand washing machine with a screw conveyor system for washing and separating sand and gravel.
Advancements in design: Over the years, there have been advancements in the design and technology of screw sand washers to improve their efficiency, performance, and versatility. These advancements include changes in the shape and configuration of the screw, the addition of water spray systems, and the incorporation of various features such as dewatering screens, classifiers, and fines recovery systems.
Modern screw sand washers: Today, screw sand washers are widely used in various industries, including construction, mining, quarrying, and recycling, for washing and dewatering sand and gravel materials. They come in different sizes, configurations, and capacities to suit different applications and production requirements.
In conclusion, the invention of the screw sand washer can be traced back to the late 19th or early 20th century, with the development of various patents and advancements in design over time. Today, screw sand washers are widely used in various industries as an efficient and effective method for washing and dewatering sand and gravel materials.
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