SU1555579A1 - One-way valve - Google Patents

Abstract

The invention relates to pipeline fittings and is intended to block the reverse flow of liquid media containing solid particles. The aim of the invention is to increase the reliability of operation by eliminating the jamming of the locking member with an additional lifting mechanism in the inlet pipe of the housing. The additional lifting mechanism is made in the form of a socket 7 rigidly connected to the plate 5, a hinge 6 connected to the housing 1. The outer surface 8 of the socket 7 and the inner surface 9 of the corresponding inlet pipe 2 with it have the shape of a torus surface, as a result of which the opening is excluded jamming of the plate 5 with the nozzle 7 in the inlet nozzle 2 when solid sediment is deposited from the transported medium in the inlet nozzle 2. 1 sludge.

Description

one

(21) 4292081 / 23-29

(22) 07/31/87

(46) 04/07/90. Bul № 13

(71) All-Union Scientific Research and Design and Survey Institute of Pipeline Hydrotransport

(72) A.S. Obuschak, E.L.Melnikov and V.A.Konovalov

(53) 621.646 (088.8)

(56) US Patent No. 3144045, cl. 137-527.8, 1964.

(54) CHECK VALVE

(57) The invention relates to pipe fittings and is intended to shut off the reverse flow of liquid media containing solid particles. The purpose of the invention is to increase

reliability of operation due to elimination of jamming of the locking member with an additional lifting mechanism in the inlet pipe of the housing. The additional lifting mechanism is made in the form of a socket 7 rigidly connected to the plate 5, a hinge 6 connected to the housing 1. The outer surface 8 of the socket 7 and the inner surface 9 of the corresponding inlet pipe 2 with it have the shape of a torus surface, as a result of which the opening is excluded jamming of the plate 5 with the nozzle 7 in the inlet nozzle 2 when solid sediment is deposited from the transported medium in the inlet nozzle 2. 1 sludge.

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The invention relates to pipe fittings, namely, non-return valves for shutting off the reverse flow of liquids containing solid particles.

The aim of the invention is to increase the reliability of operation by eliminating jamming of the locking member with an additional lifting mechanism along the inlet pipe of the housing.

The drawing shows a check valve, a section about

The check valve includes a housing 1 with an inlet 2 and an outlet 3 with nozzles and a saddle 4 and a locking member in the form of a plate 5 connected by a hinge 6 to the body 1 and equipped with an additional lifting mechanism, made in the form of a socket 7, rigidly connected to the plate 5 The outer surface 8 of the nozzle 7 and the inner surface 9 of the inlet nozzle 2 associated with it have the shape of a torus surface, whose axis is located along an arc of circumference 25 centered on the axis of the hinge 6. When the working medium is fed through the inlet nozzle 2 into the housing 1 plate under the action of ne The pressure drops away from the seat 4 and rotates around the axis of the hinge 6. When the flow rate increases, the pressure acting on the end surface of the nozzle 7 ensures the output of the disk 5 to the upper part of the body 1, where the speeds of the medium are insignificant and there is no abrasive wear the surface of the plate 5,

15555794

If the medium flow stops, the plate 5 is lowered onto the saddle 4, and the nozzle 7 enters the inlet nozzle 2. when opening the valve, the outer torus surface 8 of the nozzle 7, moving along an arc of a circle centered on the axis of the hinge 6, does not push the sediment from solid particles into the body cavity, but only touches it without deforming it.

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Claims (1)

Invention Formula A check valve, comprising a housing with inlet and outlet nozzles and a saddle and a locking body in the form of a plate, is hingedly connected with the housing and equipped with an additional lift mechanism placed movably in the inlet manifold, so as to increase reliability of operation, the mechanism of additional lifting of the plate is made in the form of a nozzle, and its outer surface and the inner surface of the inlet nozzle corresponding to it have the shape of a torus surface, whose axis is located along an arc of a circle centered on the axis of the hinge linking the plate to the housing, with the nipple attached directly to the plate. Q 5 0 five Invention Formula A check valve, comprising a housing with inlet and outlet nozzles and a saddle and a locking body in the form of a plate, is hingedly connected with the housing and equipped with an additional lift mechanism placed movably in the inlet manifold, so as to increase reliability of operation, the mechanism of additional lifting of the plate is made in the form of a nozzle, and its outer surface and the inner surface of the inlet nozzle corresponding to it have the shape of a torus surface, whose axis is located along an arc of a circle centered on the axis of the hinge linking the plate to the housing, with the nipple attached directly to the plate.