DE102007042838A1 - scree - Google Patents

Abstract

The invention relates to a sieve, in particular a sieve for use in Plansichtern or the like screening and viewing devices for the screening of floury, granular or granular products. In addition to the usual lateral diarrhea channels (4) at least one further, centrally arranged diarrhea channel (5) is provided.

Description

The The invention relates to a sieve, in particular a sieve for use in Plansichtern or the like sieving and viewing devices for Sighting of floury, granular or granular products.

In the EP-B-584302 are devices for plansifter, in particular sieves and sieve frame disclosed. Such screens have a sieve box with bottom plate and fines discharge as well as a sieve frame covered with sieve cloth. The screen frame is, like the screen box with webs divided into fields, is fastener-free and form-fitting inserted into the sieve box. Such insert screen frame has a sufficiently high inherent rigidity, so that it is not deformed and does not need to be fixed with fasteners on the screen box. The screen frame is preferably made of metallic materials and covered with screen mesh. The product-carrying surfaces of the sieve box are preferably coated with plastic, the bottom plate is made of metal or plastic.

It is also known to produce screen frames made of plastics and for Stiffening to provide a metal skeleton. The screen mesh can through Foaming can be connected to the screen frame.

Furthermore, it is after the DE-A-101 05 647 known to foam such sieve boxes made of a plastic. This can be provided for a web still an insert in the foam mold, which is floatingly stored during foaming and can shrink freely during cooling.

Of the Invention has for its object to develop a sieve, the a better performance adaptation to the product flow in the classifier, In particular Plansichter allows and especially for smaller Achievements is suitable. The solution of the task takes place with the features of claim 1. The screen box has at least one central Diarrhea channel on. Such a channel is in addition to usual Channels provided at the edge of the sieve box.

Further Embodiments are in the subclaims disclosed. So can two such, central channels be provided parallel to each other in the screen box, wherein such Sieve box with two central channels also two, side by side lying sub-boxes can be formed.

alternative it is also conceivable, the diarrhea channels significantly narrower to perform as usual.

Farther it is possible in combination or alternatively, central To provide outlet channels of different sizes.

The Outside dimensions (base area) of the sieve are at all Preferably, embodiments are the same.

In a further embodiment, the sieve boxes are preferably filled with foam and provided with insertion sieves whose frames are made of metal, preferably made of stainless steel, in accordance with the disclosure according to EP-B-584302 ,

Of the Outlet box preferably has a modular structure, which is at small number of molded parts a high variety of outlet variants also possible with regard to the number of product runs.

The Invention will be hereinafter in an embodiment described in detail with reference to a drawing. The drawing shows a foamed screen box.

A screen box foamed from PUR 1 a sieve consists of two adjacent sub-boxes 1' and has a bottom plate 2 as well as side walls and partitions 3 for receiving a Einlegesiebrahmens with webs, not shown. The frame height of the screen box is 8 cm.

Pickled form the part boxes 1' a sieve box 1 and so are in addition to the usual, lateral diarrhea channels 4 two central diarrhea channels 5 available. The width of these diarrhea channels 5 is about 6 cm. The, based on the partial boxes 1' on the long sides arranged diarrhea channels 5 are preferably identical, which simplifies insertion.

The foamed sieve box 1 has no sharp corners and edges, which makes cleaning easier. The wear is low.

The Sieve also has specifically trained corner pieces of the outer Frame up a good center inside out Allow side walls.

The insert screen frame made of stainless steel is provided with a contour-matched seal, which ensures optimum tightness between the insert screen frame and screen box 1 guaranteed.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 584302 B [0002, 0010]
• - DE 10105647 A [0004]

Claims (6)

Sieve, in particular a sieve for use in Plansichtern or the like sieving and viewing devices for the screening of floury, granular or granular products, consisting of a sieve box with bottom plate and at least one passage for product diarrhea and a Einzulgesiebrahmen which is covered with a mesh fabric, characterized in that in addition to conventional side diarrhea channels ( 4 ) at least one further, central diarrhea channel ( 5 ) is provided. Sieve according to claim 1, characterized in that two parallel, central diarrhea channels ( 5 ) are provided. Sieve according to claim 1 or 2, characterized in that the sieve box ( 1 ) from two sub-boxes ( 1' ) is formed. Sieve according to claim 2 or 3, characterized in that the sieve box ( 1 ) four diarrhea channels ( 4 . 5 ), of which at least one diarrhea channel ( 5 ) is arranged centrally. Sieve according to at least one of claims 1 to 4, characterized in that the sieve box ( 1 ) consists of a plastic, in particular of a foamable plastic. Sieve according to at least one of the claims 1 to 5, characterized in that the insert screen frame Metal, in particular of stainless steel.