PERCUSSION ASSEMBLY Russian patent published in 2015 - IPC F15B21/12 

FIELD: machine building.

SUBSTANCE: assembly is intended to create pulse mode of the liquid movement. The assembly contains a casing with two output and input holes, input holes are located opposite, and are made coaxially along the centring rod, installed in the cylindrical casing with rigidly secured at it ends dart valves, located above the input holes, at that the centring rod is made with three degrees of freedoms relatively the casing, and design additionally contains two guide bushings with seat for the dart valves, two lock rings, two return springs, at that each dart valve is inserted in the guide bushing with seat installed at the side of the input holes of the casing, secured at end of the centring rod and is located between the return spring, secured in the guide bushing using the lock ring, and cone spring installed in the input hole of the casing.

EFFECT: operation reliability and stability.

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