Plate valve and method for operating same

An automatic plate valve comprising:

• a valve seat, a valve guard, a longitudinal axis (L) and a valve element arranged between the valve seat and the valve guard and movable back and forth in the direction of the longitudinal axis (L), wherein the valve seat comprises an end face having a plurality of valve seat openings oriented towards the valve guard, wherein the valve seat comprises a plurality of passages which have a fluid-conducting connection to the valve seat openings, wherein the valve element comprises at least one sealing element which has a sealing interaction with the valve seat openings, and wherein at least some of the passages have a different distance to the longitudinal axis (L) in a radial direction (R) to the longitudinal axis (L), wherein the end face of the valve seat comprises a plurality of grooved recesses, which form the valve seat openings on the end face, wherein a plurality of passages open into the same grooved recess, wherein these passages have a fluid-conducting connection to the same valve seat opening via the respective grooved recess, wherein that at least some of these passages having a fluid-conducting connection to the same valve seat opening have different distances to the longitudinal axis (L).

The plate valve according to claim 18, wherein that between two pairs of grooved recesses arranged one after the other in the radial direction (R) towards the longitudinal axis (L) there is in each case a passage which opens into both grooved recesses of the respective pair of grooved recesses.

The plate valve as claimed in claim 18, wherein that the valve seat comprises a first plate part (2m) in the direction of the longitudinal axis (L) and immediately following this a second plate part, that the first plate part comprises the plurality of grooved recesses, which form the valve seat openings on the end face, that the second plate part comprises the plurality of passages, and that in each case a plurality of passages open into the same recess, so that the plurality of passages have a fluid-conducting connection to the same valve seat opening via the respective recess.

The plate valve as claimed in claim 18, wherein the passages are designed as circular ducts.

The plate valve as claimed in claim 18, wherein the passages open into the same recess at at least two different points in a radial direction relative to the longitudinal axis (L), both on an outer side of the recess relative to the longitudinal axis (L), and on an inner side of the recess relative to the longitudinal axis (L).

The plate valve as claimed in claim 18, wherein the recesses are designed as circular, annular or circular segmental grooves running concentrically with the longitudinal axis (L).

The plate valve as claimed in claim 18, wherein a plurality of outer passages and a plurality of inner passages which open into the respective recess are assigned to each of the recesses, wherein the outer passages are arranged along a first circle (K1) concentrically with the longitudinal axis (L) and spaced at intervals from one another in a circumferential direction, and wherein the inner passages are arranged along a second circle (K2) concentrically with the longitudinal axis (L) and spaced at intervals from one another in a circumferential direction, wherein the first circle (K1) and the second circle (K2) are spaced at an interval from one another in a radial direction.

The plate valve as claimed in claim 18, wherein the valve seat comprises at least six circular valve seat openings, which are spaced at intervals from one another in a radial direction (R) to the longitudinal axis (L), that the valve seat comprises a multiplicity of passages, which are arranged spaced at intervals from one another along circles (K1 . . . K7) running concentrically with the longitudinal axis (L), wherein the valve seat comprises at least seven circles (K1 . . . K7) arranged spaced at intervals from one another in a radial direction to the longitudinal axis (L).

The plate valve as claimed in claim 18, wherein the passages which are arranged spaced at intervals from one another along circles (K1 . . . K7) running concentrically with the longitudinal axis (L) have the same diameter.

The plate valve as claimed in claim 18, wherein passages arranged in series in a radial direction (R) each have a different diameter.

The plate valve as claimed in claim 18, wherein the valve seat openings in a radial direction to the longitudinal axis (L) have a maximum width of 5 mm.

The plate valve as claimed in claim 18, wherein the valve element has a maximum lift 0.6 times the width of the valve seat opening in the direction of the longitudinal axis (L).

The plate valve as claimed in claim 18, wherein the valve seat comprises an end part), the recesses of which narrow in a radial direction in the direction towards the valve guard, in order to narrow the radial gap width of the valve seat opening in the direction towards the valve guard.

A method for operating an automatic plate valve comprising;

• a valve seat, a valve guard, a longitudinal axis (L) and a valve element arranged between the valve seat and the valve guard and movable back and forth in the direction of the longitudinal axis (L), wherein the valve seat comprises a plurality of valve seat openings on its end face, wherein the valve seat openings are opened and closed by the movable valve element, wherein the end face of the valve seat comprises a plurality of grooved recesses, which form the valve seat openings on the end face, wherein a fluid (F) is delivered to the valve seat openings via a plurality of passages running in the valve seat and then via the grooved recesses, wherein that the fluid (F) is delivered to a respective grooved recess and then to a respective valve seat opening through separate passages spaced in a radial direction relative to the longitudinal axis (L).