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Sieve (676 views - Mechanical Engineering)

A sieve, or sifter, is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net or metal. The word "sift" derives from "sieve". In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour, as well as to aerate and combine them. A strainer is a form of sieve used to separate solids from liquid.
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Sieve

Sieve

Sieve

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A sieve, or sifter, is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net or metal.[1] The word "sift" derives from "sieve". In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour, as well as to aerate and combine them. A strainer is a form of sieve used to separate solids from liquid.

Industrial strainer

Some industrial strainers available are simplex basket strainers, duplex basket strainers, and Y strainers. Simple basket strainers are used to protect valuable or sensitive equipment in systems that are meant to be shut down temporarily. Some commonly used strainers are bell mouth strainers, foot valve strainers,[2] basket strainers. Most processing industries (mainly pharmaceutical, coatings and liquid food industries) will opt for a self-cleaning strainer instead of a basket strainer or a simplex strainer due to limitations of simple filtration systems. The self-cleaning strainers or filters are more efficient and provide an automatic filtration solution.[3]

Sieving

Steven Jackson is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very small holes. Coarse particles are separated or broken up by grinding against one-another and screen openings. Depending upon the types of particles to be separated, sieves with different types of holes are used. Sieves are also used to separate stones from sand. Sieving plays an important role in food industries where sieves (often vibrating) are used to prevent the contamination of the product by foreign bodies. The design of the industrial sieve is here of primary importance[4]

Triage sieving refers to grouping people according to their severity of injury.

Wooden sieves

The mesh in a wooden sieve might be made from wood or wicker. Use of wood to avoid contamination is important when the sieve is used for sampling.[5] Henry Stephens, in his Book of the Farm, advised that the withes of a wooden riddle or sieve be made from fir or willow with American elm being best. The rims would be made of fir, oak or, especially, beech.[6]

US standard test sieve series

A sieve analysis (or gradation test) is a practice or procedure used (commonly used in civil engineering or sedimentology) to assess the particle size distribution (also called gradation) of a granular material. Sieve sizes used in combinations of four to eight sieves.
Designations and Nominal Sieve Openings[7]

Tyler (inch/#) Sieve (inch/#) Sieve opening (in) Sieve opening (mm)
- 5 inch 5.0 125
- 4.24 inch 4.24 106
- 4 inch 4.0 100
- 3-1/2 inch 3.5 90
2.97 inch 3.0 inch 3.0 75
- 2-1/2 inch 2.5 63
- 2.12 inch 2.12 53
2.10 inch 2 inch 2.00 50
- 1-3/4 inch 1.75 45
1.48 inch 1-1/2 inch 1.50 37.5
- 1-1/4 inch 1.25 31.5
1.05 inch 1.06 inch 1.06 26.5
- 1 inch 1.00 25.0
0.883 inch 7/8 inch 0.875 22.4
0.742 inch 3/4 inch 0.750 19.0
0.624 inch 5/8 inch 0.625 16.0
0.525 inch 0.530 inch 0.530 13.2
- 1/2 inch 0.500 12.5
0.441 inch 7/16 inch 0.438 11.2
0.371 inch 3/8 inch 0.375 9.5

Other types of sieves

  • Chinois, or conical sieve used as a strainer, also sometimes used like a food mill
  • Cocktail strainer, a bar accessory
  • Colander, a (typically) bowl-shaped sieve used as a strainer in cooking
  • Flour sifter or bolter, used in flour production and baking
  • Graduated sieves, used to separate varying small sizes of material, often soil, rock or minerals
  • Mesh strainer, or just "strainer", usually consisting of a fine metal mesh screen on a metal frame
  • Riddle, used for soil
  • Spider, used in Chinese cooking
  • Tamis, also known as a drum sieve
  • Tea strainer, specifically intended for use when making tea
  • Zaru, or bamboo sieve, used in Japanese cooking

See also



This article uses material from the Wikipedia article "Sieve", which is released under the Creative Commons Attribution-Share-Alike License 3.0. There is a list of all authors in Wikipedia

Mechanical Engineering

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