ELECTRIC DRIVE Russian patent published in 2018 - IPC F16K31/00 

FIELD: valve production.

SUBSTANCE: invention relates to pipe fittings and, in particular, to a worm gear electric drive, which can be used to control throttling units. Novelty of the invention is that the cam clutch is made of a three-disk clutch. One of the leading discs, spring-loaded with the other, is made in the form of a ring with a ferrule and through a splined joint is connected to the output shaft of the reducer. Second driving disc is made in cross-section in the form of a drum and covers the first driving disc. Inside this section, parallel to the indicated disks, there is a driven disk, which in its middle part through a splined joint is connected with the outer diameter of the running nut. On each end surface of the driven disk, trapezoidal protrusions and cavities with a reverse profile with respect to each other are made; on the inner end surface of the driving discs, protrusions and cavities are also made. Profiles of the cavities on the disks are similar to the profiles of the protrusions on mutually facing surfaces and have two working faces in the section, one of which – power – is made at right angle to the end of the disks, and the other – with bevel at an angle α.

EFFECT: technical result of the invention is higher reliability of an electric motor drive of a throttling unit.

3 cl, 4 dwg