DETACHABLE TIGHT CONNECTION OF "DOVETAIL" TYPE Russian patent published in 2019 - IPC F16B2/06 F16B2/22 F16B7/04 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to tight connection of parts, in particular, pipes for water supply of housing and communal services, process pipelines of machines and equipment. Dovetail-type sealed detachable connection contains connected parts of tubular product, made with collars and facility for prevention of movement, made in the form of a bushing with an inner projection and with a detachable flange, enclosing the connected parts in the section between the collars, between the protrusion and the collar of one of the connected parts there is a pressed spring. Seal bush of resilient elastic material is arranged between sleeve inner ledge and second part collar, enclosing part connection zone, which under action of pressed spring is deformed from interaction with collar of second part and self-sealing connection point, wherein spring rigidity considerably exceeds elastic material elasticity of seal.

EFFECT: assurance of tightness of dovetail connection type for tubular products with simultaneous simplification of assembling-dismantling of connected parts without using tools and special appliances.

1 cl, 1 dwg