DE202010002984U1 - Screen body for separator for separating solid and liquid components - Google Patents

Abstract

Sieve body for continuously working on the screw principle separators for separating material into a solid and a liquid phase, in particular for the application for the utilization of biological raw materials, such as fruits, green masses, silage, sewage sludge or the like, hereinafter called sieve body for separators, characterized in that the openings (1) of the sieve body (2) have countersinks (3) and longitudinal grooves (4) which extend through the rows of openings in the conveying direction are arranged.

Description

The Innovation relates to an improved screen body with retaining edges and shear-reducing outlet openings for separating the solid and liquid Ingredients of biological materials.

at The utilization of biological raw materials is often their separation into their own solid and liquid Components desired, thereafter with the individual components a corresponding further processing carry out to be able to.

For such separations of biological materials into a solid and a liquid phase, as with fruits, for example, Green masses, Silage, sewage sludge or Residues from biogas plants after gas extraction are necessary, be in many cases continuous machines operating according to the screw press principle used.

These Machines have a differently designed transport screw, which promotes the material with increasing pressure to the outlet and at the same time the liquid Ingredients through small openings one of the snail enveloping Siebmantels expresses. additional options the pressure increase consist in that the flights different slopes or have a conical core.

Of the delivery process of the raw material is then fulfilled if this held on the sieve wall by holding or frictional forces and the worm so the function of the screw-nut system to produce met a straightforward movement.

In Certain cases is also the outlet a back pressure generated by a spring. The Separated ingredients can then the supplied for technological utilization process, or be deposited.

at The known machines operating on this principle are the effectiveness and quality of the separation to a great extent depends on the vote on the raw material to be separated.

there play both the design of the conveyor and press screw as also of the sieve sheath and its openings a significant role.

Of the Screen coat takes over the function of material removal the liquid components and forms the holding system to prevent the raw material from turning.

Of the Separation should be possible by continuous pressing without further comminution of the material done, hence the conditions effective holding forces for the Conserve raw material.

fines reduces friction and lowers the holding forces.

The affects the funding conditions until the situation of a co-rotating raw material roll in the screw chambers out.

is the wall contact interrupted, there is no conveyor and fabric movement process more. The sieve openings allowed to also not be added by solids, otherwise the Liquid worse flows.

In Consequence of interrupted holding forces The material blocks the further transport.

So it comes to material reflux without raw material processing.

Around to avoid the said critical phases are supporting elements on the screen body known.

These in the conveying direction arranged webs prevent the material to be separated at co-rotating with the rotational speed of the conveying and pressing screw.

So becomes from the rotating worm motion a straight forward feed motion generated.

The support elements However, they create a space for accumulation of shredded raw material between the screw body and the arranged webs, which forms an additional drainage resistance.

Of the Effect of adding sieve openings and Promotion rooms makes dependent on of structure and moisture content of the raw material continues in certain intervals disassembly and cleaning of the screen required to support and hold conditions to produce optimally.

Also can be a constant yield over the course of the separation not guaranteed become.

Of the Innovation is therefore the object of the shortcomings of the known designs eliminate and at the same time process disturbing, necessary for the intermediate cleaning To avoid breaks, so a higher one Throughput capacity to achieve a constant, optimal separation quality.

The preferred field of application is the utilization of biological raw materials in the form of their separation into solid and liquid components in order to To process components separately.

Such separations are necessary, for example, in the processing of fruits, green masses, Silage, sewage sludge or Residues from biogas plants or even pre-shredded meat with bone fractions.

It the object of the invention is the penetration of the solid raw material components into the sieve openings and the shearing by the transport and press screw as far as possible to avoid and thus turning a layer finer solid Components with conveyor interruptions with the screw to prevent and so the fluidity and the conveying capacity to improve the material.

In order to should the performance of the separation system increased and a consistently high quality the separation products over the process is achieved.

As well should by the to be improved eligibility the range of applications to more, not yet or only with difficulty expanded according to the screw press principle to be separated materials become.

Innovation is the Task solved by that at the screen openings Shear edges are avoided, which form compulsory fine particles.

The Solid parts remain larger and can transfer more thrust.

Therefore are the holes among each other or individually with holding elements Mistake. So can the openings do not clog and drain the liquid Phase of the material to be separated improves significantly.

This is achieved through reductions ( 3 ) of the screen bores ( 1 ), or by milling, ie bevels ( 6 . 7 ) above the screen openings ( 1 ).

The reductions ( 3 ), in which material to be pressed fills, eliminate shearing edges and at the same time prevent the formation of a layer of material that rotates with a corresponding compression with the screw conveyor and affects the actual separation.

The Holding and support system will over incorporated grooves over all holes made or over the holes or as a single support system each Assigned hole.

Of the Countersink angle for the supporting edge should be dependent on be selected from the processed material in the range of α = 80 to 120 degrees.

In addition to the reductions ( 3 ) existing bevels ( 6 . 7 ) above the screen openings ( 1 ) ensure that hard constituents that have penetrated into the openings, due to the feed forces generated by the screw, are gently raised again and conveyed out of the sieve opening.

The possibility the blockage of the openings is significantly minimized by this design.

Preferably, the chamfer described by a continuous over or in the respective row of holes of the screen body ( 2 ) in the conveying direction milled a longitudinal groove ( 4 ) educated.

something similar can also be assigned to each individual holes.

As shown in the exemplary embodiments, the groove (FIG. 4 ) arranged at an angle.

Thus, each row of holes in the screen body receives a retaining element ( 5 ), which prevents the material to be co-rotated by the rotational movement of the screw and at the same time acts as a transport edge in the outlet direction for the solid components.

The described embodiments can depending on the technological task and raw material to be processed individually or used in combination.

Next the heightened Process security through warranty a continuous separation process with constant quality of the solid and the liquid Shares will also significantly increase throughput and hygienic conditions improved.

Further advantageous embodiments of the innovation will become apparent from the claims, the drawings and the descriptions of the mode of action, or to the embodiment, which is shown below.

The Drawings show:

1 : the section of the development of a screen body with longitudinal grooves

2 : the section AA through a longitudinal groove with sieve opening

3 : the section of the development of a screen body without longitudinal grooves

4 : the section BB through a sieve opening

1

Opening of the screen body, drilling

2

screen body

3

reduction

4

longitudinal groove

5

transport edge

6

Aushebeschräge as a longitudinal groove

7

separate Aushebeschräge

Claims (6)

Sieve body for continuously working on the screw principle separators for separating material into a solid and a liquid phase, in particular for the application for the utilization of biological raw materials, such as fruits, green masses, silage, sewage sludge or the like, hereinafter called sieve body for separators, characterized in that the openings ( 1 ) of the screen body ( 2 ) Reductions ( 3 ) and over the rows of openings in the conveying direction continuous longitudinal grooves ( 4 ) are arranged. Strainer for separators according to claim 1, characterized in that the counterbores ( 3 ) can have an opening angle α = 80 to 120 degrees. Screen body for separators according to claims 1 and 2, characterized in that the continuous longitudinal grooves ( 4 ) a transport edge ( 5 ) and with an angle β = 5 to 20 degrees as Aushebeschräge ( 6 ) are designed. Screen body for separators according to claims 1 to 3, characterized in that each individual sieve opening ( 1 ) with a Aushebschräge ( 6 ) designed separate groove ( 7 ) can be provided. Screen body for separators according to claim 1, characterized in that the openings ( 1 ) of the screen body ( 2 However, preferably bores are also any other shape, such as slots may have. Screen body for separators according to claims 1 to 5, characterized in that the openings ( 1 ) of the screen body ( 2 ), the subsidence ( 3 ) and as lift-off slopes ( 6 . 7 ) formed grooves may have a polished surface.