| 摘要 |
FIELD: valving. ^ SUBSTANCE: check valve has housing with rigid sealing sections, rotatable valving member, and seat. The rigid sealing sections of the housing are made of double-sided ring conical projections arranged over periphery. The small bases of cones point in opposite directions. The valving member is made of a round flexible disk. The flexible disk is made of the periphery and central parts. The periphery part is made of a ring. The longitudinal section of the ring is a rectangular triangle whose hypotenuse faces the center. The central part is made of ball segment. The segment of the ball is reinforced from the side of its base by round metallic plate. The periphery part is connected with the central cross-piece. The thickness of the cross-piece decreases from its axis of symmetry to the edge. The inner side of the housing is provided with a bore. The seat is stepwise and has diffuser at the inlet. ^ EFFECT: enhanced reliability. ^ 6 dwg |
