Machine for fractionating ground cereal products
AssigneeSwisca AG
InventorsOliver Ensslin, Jonas Schär
Life of this patent
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Abstract
The plansifter or the grain purifying machine includes at least one sieve compartment with an arrangement of several sieve elements with sieves. The sieve compartments can be brought into oscillations in the form of circling movements. At least one of the sieves is designed as a flat body. The sieve holes are present as though-holes. The sieve can be present as a metal sieve with etched through-holes or the metal sieve can be manufactured by way of an additive method. The flat body sieve with through-holes significantly improves the efficiency of the fractionating process.
Claims17
A machine for fractionating ground cereal products, comprising at least one sieve compartment with a plurality of sieves, a sieving product inlet and a sieving product outlet, wherein the machine is configured to bring the sieve into oscillation movements, in order to assist in the at least partial passage of the sieving product through the sieve, said sieving product being in through the sieve inlet, wherein at least one of the sieves is designed as a flat body with through-holes, wherein for webs which are formed between adjacent through-holes, it is the case that:
- 0.5*d<bst<1.6*d, wherein d is the thickness of the flat body and bst is the width of the webs at their narrowest location.
A sieve element for fractionating ground cereal products, the machine comprising at least one sieve compartment with a plurality of sieves, a sieving product inlet and a sieving product outlet, wherein the machine is configured to bring the sieve into oscillation movements, in order to assist in the at least partial passage of the sieving product through the sieve, said sieving product being in through the sieve inlet, the sieve element comprising a flat body with an area of at least 100 cm2 with a regular arrangement of through-holes, as well as a primary frame, to which the flat body is fastened, wherein for webs which are formed between adjacent through-holes, it is the case that:
- 0.5*d<bst<1.6*d, wherein d is the thickness of the flat body and bst is the width of the webs at their narrowest location.
A machine for fractionating ground cereal products, comprising at least one sieve compartment with a plurality of sieves, a sieving product inlet and a sieving product outlet, wherein the machine is configured to bring the sieve into oscillation movements, in order to assist in the at least partial passage of the sieving product through the sieve, said sieving product being in through the sieve inlet, wherein at least one of the sieves is designed as a flat body with through-holes, wherein at least one of the sieves is equipped for an automatic detection of sieve breakages by comprising a strip conductor which is formed in electrically insulating material, wherein the strip conductor forms an electrode each at two locations, whereby one can ascertain whether the strip conductor between the electrodes runs in an uninterrupted or interrupted manner.
Dependencies are inferred from the claim text.