APPARATUSES AND METHODS FOR SCREENING A PRODUCT

摘要

A screening apparatus comprises screen means (17) for screening a product and weight detecting means (24) operationally associated with said screen means (17); a screening apparatus comprises sieve means (103; 103') and further sieve means (103a; 103'') between which there is interposed barrier means (107; 107') arranged in such a way as to prevent a product screened by said sieve means (103; 103') from reaching said further sieve means (103a; 103''), an outlet (106; 106') of said sieve means (103; 103') through which a fraction of said product retained by said sieve means (103; 103') can be evacuated and an inlet (105a; 105'') terminating in said further sieve means (103a; 103''), between said outlet (106; 106') and said inlet (105; 105') connecting means (116; 119) being interposed; a method comprises pouring a product to be screened onto sieve means (103; 103') and furthermore pouring said product onto further sieve means (103b; 103''), said pouring comprising completely occupying said sieve means (103; 103') and said further pouring comprising partially occupying said further sieve means (103b; 103'').