Needle fill valve

摘要

A needle fill valve, in which a bearer is set on the top of a body, the bearer is covered on an upper cover, a front cavity is set on the front side of the bearer, an inner cavity is set on the location corresponding to the front cavity for placing the annular gasket of the sealing plate wrapped a sealing valve pad, and the purpose of fixing the sealing valve pad for preventing being disengaged from the annular gasket is achieved by fastening an upper fixed seat and a lower fixed seat.

主权项

1. A needle fill valve comprising: a bearer set on a top of a body, an upper cover set on the bearer, a sealing plate placed inside a cavity located between the bearer and the upper cover, wherein:
a longitudinal inlet pipeline is set inside the body, the bearer is located on the top of the body, a front cavity is set on a front side and a rear cavity is set on a rear side; the upper cover, which correspondingly covers the bearer, has an inner cavity set inside, the inner cavity corresponding to the front cavity and forming a capacity space, a plate holder set on the rear side of the upper cover, a groove set inside the plate holder, the groove communicating with the inner cavity, a spacing screw hole and a through hole are set inside the groove, the spacing screw hole provided for an adjustment bolt to fasten thereon after passing through a first elastic element; the sealing plate includes: a plate body, an annular gasket set in the front side, a round hole set on the annular gasket, a spacing hole and a pinhole, the spacing hole provided for the adjustment bolt to pass through, and the pinhole provided for a pinhole pad to pass through; a sealing valve pad, which is an elastic circular membrane pad, has an inner flange set on a top side of the elastic circular membrane pad, an inner groove concavely set on an inner side of the inner flange for embedding the circumference of the annular gasket; a lower fixed seat, which is wrapped on the bottom of the annular gasket, has multiple elastic cleats and multiple spacing sheets annularly set on a top side of the lower fixed seat, the elastic cleats and the spacing sheets are arranged alternately and protruded vertically upwards above the round hole; an upper fixed seat has a flange is extended downwards from its circumference, the flange set around an outer edge of the inner flange of the sealing valve pad, an inner round hole and a notch set on the upper fixed seat, the inner round hole provided for the elastic cleats and the spacing sheets to pass therethrough, the spacing sheets butting against a hole edge of the inner round hole, the elastic cleats fastened to the upper fixed seat, and the sealing valve pad fixed by fastening the upper fixed seat and the lower fixed seat.