Device for separating a flowing medium comprising mixture into fractions, throughflow tank and method for manufacturing a plate separator device

1. A device for separating a flowing medium comprising a mixture into at least two fractions with differing mass density, comprising:

a plurality of plates disposed substantially parallel to each other, and

a frame engaging at least substantially round the plurality of plates,

wherein the plurality of plates disposed substantially parallel to each other are provided with coupling openings, through which coupling openings is inserted at least one elongate coupling member which, in a direction perpendicularly of a longitudinal axis of the elongate coupling member, has an asymmetrical cross-section at positions located between the plurality of plates,

wherein the elongate coupling member:

A) is insertable through the coupling openings in an insert rotation position, and

B) turned around the longitudinal axis relative to the insert rotation position to a distance keeping rotational position that determines the distance between the plurality of plates in fixed manner.

2. The device as claimed in claim 1 , wherein the elongate coupling member perpendicularly of the longitudinal axis of the elongate coupling member has a section at a position located between the plurality of plates that is non-circular.

3. The device as claimed in claim 1 , wherein longitudinal sides of the plurality of plates are provided with protrusions that are placed in openings in the frame.

4. The device as claimed in claim 1 , wherein the frame comprises longitudinal sides connected by transverse connections to form a substantially block-shaped structure.

5. The device as claimed in claim 4 , wherein the plurality of plates are positioned at an angle of 30-60° to the longitudinal sides of the substantially block-like structure of the frame.

6. The device as claimed in claim 1 , wherein a feed for providing the flowing medium is connected to a first end surface of the frame.

7. The device as claimed in claim 1 , wherein a discharge for discharging the at least two fractions from the device is connected to a second end surface of the frame.

8. The device as claimed in claim 1 , wherein the device further comprises at least one of a temperature component and an electrostatic component to influence the separation of the flowing medium.

9. A throughflow tank provided with a feed for providing a liquid mixture to be separated and at least two separate discharges for discharging two separated liquid fractions, wherein the throughflow tank also comprises at least one device as claimed in claim 1 located between the feed and the at least two separate discharges.

10. A method for manufacturing a plate separator device for the purpose of separating a flowing liquid mixture into at least two fractions with differing mass density, comprising the processing steps of:

A) placing a plurality of plates provided with coupling openings in a substantially mutually parallel orientation;

B) inserting at least one elongate coupling member through the coupling openings in the plurality of plates; and

C) rotating the elongate coupling member inserted through the coupling openings in the plurality of plates such that the plurality of plates are held by the elongate coupling member at a fixed mutual distance.

11. The method as claimed in claim 10 , wherein during processing step A) at least some of the plurality of plates are at least partially placed in a frame.

12. The method as claimed in claim 11 , wherein protrusions on longitudinal sides of the plurality of plates are placed into recesses arranged in the frame.

13. The method as claimed in claim 10 , wherein after rotation of the elongate coupling member in processing step C), the coupling member is secured such that it can no longer be rotated.