CONNECTION COUPLING FOR HYDRAULIC CONNECTION Russian patent published in 2019 - IPC F16L37/34 

FIELD: reinforcement bars production.

SUBSTANCE: invention relates to coupling (1) for hydraulic connection on a working medium line under pressure to create a forced connection with connecting nipple (2) having housing (3) and sealing assembly (4), wherein housing (3) has flow channel (5) for working medium under pressure and axis A of connection, seal assembly (4) comprises bushing body (6), pressure bushing (7) and pusher (8) of valve, seal assembly (4) restricts part of flow channel (5), valve pusher (8) is held on sleeve body (6) through pusher guide (9) so that valve pusher (8) is located in flow channel (5), pressure bushing (7) surrounds valve pusher (8), pressure bushing (7) can be displaced along axis A of connection and is held between position of closing, in which flow channel (5) is closed by means of pressure bushing (7), and position of opening, in which channel (5) of flow is opened by means of pressure bushing (7), pressure bushing (7) is spring-loaded by means of pressure spring (10) in direction of its closing position, and for creation of forced connection with connecting nipple (2) user should apply force of connection. Connecting coupling (1), which is improved with respect to safety and ease of use, is made so that the surface area values, at which on pressure sleeve (7) there is a force in the closing position direction with pressure p of the working medium under pressure present in channel (5) of flow, are selected such that, at least in closing position of pressure sleeve (7) at given upper pressure p, preset first threshold value of connection force is exceeded to prevent creation by user of forced connection with connecting nipple (2).

EFFECT: connection coupling is proposed for hydraulic connection.

19 cl, 9 dwg