Double seat valve

A double-seat valve, valve seat technology, applied in the direction of lift valve, valve device, mechanical equipment, etc.

Active Publication Date: 2010-10-20
GEA TUCHENHAGEN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010]Therefore, in any case, a direct impingement by the seat cleaning fluid on the faces delimiting the leakage chamber is detrimental

Method used

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Embodiment Construction

[0053] Double-seat valve 1 of the present invention ( figure 1 ) essentially comprises a valve chamber 10 with a first and a second valve chamber part 1a or 1b, two independently mutually movable closing parts 3 and 4 with respectively associated displacement rods 3a or 4a and a valve seat The ring 2, seat ring establishes communication between the valve chamber parts 1a, 1b via a communication opening 2c on the inside.

[0054] In the closed position of the double-seat valve 1, the first closing part 3 (active closing part), which is designed as a sliding piston, is accommodated sealingly in a first seat surface 2a formed by the communication opening 2c, which is configured as Cylindrical seating surface. For this purpose, a first sealing ring 6 is arranged in the sliding piston 3 , which interacts with the first valve seat surface 2 a only by means of a radial offset (radial sealing ring in sliding engagement). In the closed position of the double-seat valve 1 , the secon...

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PUM

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Abstract

The invention relates to a double seat valve, which is capable of cleaning the seat and which is improved compared to that of the prior art, whereby a delivery as free from turbulence as possible of the seat cleaning flow into and out of the leakage cavity is ensured, and a pressure-increasing direct action upon the seat areas is reliably prevented.; This is achieved in that: the second closing element (4), when in its closed position, rests with a stopping surface (4f), which is placed on a face of its cylindrical projection (4*) and which, together with the peripheral wall (4c, 4h), forms asecond wraparound edge (U2), upon the interface (2e, 2e*), and to be precise, directly upon the first seating (2a) in an adjoining manner; the peripheral wall (4c), at its end facing away from the first closing element (3), merges into a rotationally symmetric reversing surface (4d) (starting point of contour K)), and this reversing surface (4d) leads in a face (4e) of the recess (4b) oriented, in essence, perpendicular to the longitudinal axis of the second closing element (4) (leading point of contour K)), and; ; when viewing the meridian section, the reversing surface (4b) has a contour (K) with a bend-free curve, a direction vector in the leading point of the reversing surface (4d) points into a discharge borehole (3d, 3d*) centrally provided in the first closing element (3) without colliding with the first closing element (3) in the vicinity of its areas bordering the leakage cavity (5) and forming dynamic pressure.

Description

technical field [0001] The invention relates to a double-seat valve comprising two closing parts arranged in series and movable relative to each other which, in the closed position of the double-seat valve, prevent fluid from passing from one valve chamber part to the other valve chamber part In the open and closed position, the two closing parts define between them a leakage chamber which communicates with the outside of the double-seat valve, wherein in the closed position the first closing part designed as a sliding piston seals Accommodated in a communication opening communicating with each valve chamber part, and during the opening movement sealingly abuts on the second closing part assigned to a second valve seat surface, and in the further opening movement, the first The two closing parts are also transferred to an open position, wherein the first closing part has a first sealing ring on its end section radially opposite a cylindrical first valve formed in the communica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/44
Inventor J·布尔梅斯特M·聚德尔
Owner GEA TUCHENHAGEN GMBH
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