DE4126382A1 - Separator for extracting solids from fluids - has central shaft and compressed supply to worm screw where solids are extracted and not mixed up - Google Patents

Abstract

A central shaft (2) has a worm screw arrangement around it and is driven by a motor (3). The fluid with the solids to be extracted is forced through grids (4) which allows the liquid to escape and retains the solids. The right angled rear blades of the worm screw hold the solids back in the stop area (7) for later extraction (8). USE/ADVANTAGE - Improved extraction of solids which are drier and thus wastes less water.

Description

field of use

The invention relates to a device for separating Solids from liquids using press screws separators, due to their consistency with the previously known facilities could not be separated.

These are in particular the solid-liquid Separation of slurry types with dry matter from over 10% and high slimy proportions.

Characteristic of the known technical solutions

In the previously known press screw separators Solid-liquid separation of liquid manure are used Provide press screws with a helix.

For better guidance of the pressing forces in the axial direction the last snail wing before grafting becomes Snail soul running out.

In European patent application 03 67 037 A2 "Process for dewatering suspended in water Solids and press screw separator therefor " such an embodiment is shown.

After experience in practical use with such Machines is the separation of solid-liquid mixtures only possible if the proportion of slimy substances is low.  

In various applications, especially with slurry builds over 10% dry matter content and high mucus content there is no stable solid plug, so that the insert the press screw separators is not possible.

On the way to the patented knowledge, the The cause of this failure was found in the area where the Snail wings fading towards the snail soul is.

This area forms a zone in which under the high Pressure the slowly draining solid-liquid The mixture was thoroughly tumbled, further dewatered and thus is solidified.

This flexing works with a comminution of solids and associated with mobilization of mucus. This will squeeze the liquid out of the solid more difficult and ultimately no longer possible.

As a countermeasure, the patent application DE-P 14 04 148.4-44 to change the viscosity of the insert of a vibrator and an increase in stake reached such separators.

All slurry separation processes occurring in practice can but can also not be mastered with the vibrator insert.  

Aim of the invention

The use is for business reasons water-saving measures in factory farming are required Lich. The manure gets an ever higher dry substance content.

The aim of the invention is therefore the press screws to change the separator so that such slurry is also separated can be.

Features of the invention

The object is achieved in that the Graft down last snail wings in a perpendicular to the Edge leading to the screw axis ends.

A mixing and crushing of solids as well as the Mobilization of mucilage is largely prevented. With every turn, corresponding Solid amounts firmly attached to the plug. The liquid is separated by the pressure and the plug moves towards the discharge.

The distance between the screw core and the sieve should be made smaller lead as the distance in the direction of the screw axis between the spirals.

The dimension in the direction of the screw axis between the coils has to be between 80 and 120 mm.  

With a diameter of the screw of approx. 260 mm, the Execution of the worm with two threads. Partly this doubles the performance and on the other hand, a better axial introduction of force into the Graft reached.

For separators with larger screw diameters, at about the same screw pitch three or more gears Snails used.

Embodiment

In the exemplary embodiment and in Figure 1, a press screw separator ( 1 ) with a two-start screw ( 2 ) with a screw diameter of 260 mm and a spiral distance of 100 mm is shown, which is driven by the geared motor ( 3 ).

The liquid can escape through the bar screen basket ( 4 ), while the solid is moved by the two screw spirals ( 5 ; 6 ) through the plug area ( 7 ) to the discharge ( 8 ).

The two edges of the Spirals deposit appropriate solids with every revolution amount firmly and gently on the stoppers.

Claims (5)

1. Apparatus for separating solids from liquids with press screw separators, which form a cylindrical, on the side walls bracing solid plug to retain the liquid and build up the pressure, characterized in that at the transition of the solid from the area of the screw to the grafting of the last screw wing ends in an edge perpendicular to the screw axis. 2. Device according to claim 1, characterized in that the distance between the screw core and the sieve is smaller than the one between the coils in the direction of the screw axis distance. 3. Device according to claim 1 and 2, characterized in that the distance between the coils towards the Screw axis is designed with 80 to 120 mm. 4. Apparatus according to claim 1 to 3 for press screws separators with screw diameters of approx. 260 mm characterized in that the screw with two Spirals is running. 5. Apparatus according to claim 1 to 3 for press screws separators with larger screw diameters characterized that the snail with three and more Spirals is running.