New Designed Sieve Shaker

An apparatus for use in sieving dry material, said apparatus comprising a housing

defining a suction chamber, means for connecting the suction chamber to a source of vacuum, a sieve shaker case and a sieve shaker element, means for connecting the sieve shaker case and the sieve shaker element to the housing so that the sieve shaker element is adjacent the housing with one side of said sieve shaker element facing towards said suction chamber, a member disposed adjacent to said one side sieve shaker element, said member including a plurality of air passages extending from said one side of the sieve shaker element into the suction chamber, and a plurality of air inlet means to supply air to said one side of the sieve shaker element adjacent the housing.

. A method of sieving a dry particulate material comprising the steps of introducing the material to a sieve shaker case provided with a sieve shaker element, drawing air through said sieve shaker element, through a plurality of passages defined in a fixedly mounted member into a chamber that is connected to a source of partial vacuum, and introducing air through a plurality of air inlet means defined in the fixedly mounted member to the side of said sieve shaker element adjacent said chamber so that the air flows through the air inlet means and through the sieve shaker element to stir or agitate the material to be sieve shakerd and subsequently flows back through the sieve shaker element and through the passages into said chamber.

By way of comparison, the British Standard method for determining the fineness involves the determination of the specific surface area, which does not directly give a measurement of particle size. The British Standard test is a difficult and laborious test to perform, and it has been found that a time of at least 45 minutes is necessary to complete the test. In this country, as an alternative to determining the specific surface area, wet sieving of fine materials has been adopted as a more reproductable test method, but a time of 25 minutes is needed to complete a wet sieving test, the duration of this period of time being mainly due to the time necessary subsequently to dry the materials before weighing. It has been proposed to utilise a rapid drying method, to reduce the time necessary to conduct this test, but it has been found that this rapid drying method eventually results in damage being done to the sieve shaker.

by: ericfu

POST COMMENT

Simple Chicken Coop Designs Phases of Web Designing and Web Development Android Applications For The Web Designer Replica bags: substitute for designer bags Window Boards Are Increasingly Popular In Architecture Design And Building Renovation Trendy Hair Styles Hairstyles For That Right Attitude 10 Guidelines In Design For Manufacturing 10 More Guidelines In Design For Manufacturing What is Sustainable Web Design? Sydney Landscaping Design Victoria Beckham Change Her Style! Dance- The Hollywood Style