Double-shutoff valve device applicable to press pouring of reinforced concrete
A technology of reinforced concrete and shut-off valve, which is applied in the direction of valve device, construction material processing, construction, etc., to achieve the effect of light airtightness, guarantee of airtightness and smoothness
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[0025] The present invention will be further described below in combination with principle diagrams and specific operation examples.
[0026] combine Figure 1 to Figure 4 As shown in , a double shut-off valve device suitable for pouring reinforced concrete under pressure, the double shut-off valve device is installed on the pre-opening hole 11 below the side wall of the steel pipe 1, wherein the double shut-off valve device includes: a first shut-off valve 2. The first cut-off valve 2 includes a first cut-off piece 21 and a first cut-off valve seat 22. Specifically, the shape of the first cut-off piece 21 is adapted to the shape of the steel pipe 1. In practice, the first cut-off piece The piece 21 is made of a steel plate, and it is made into an arc shape as a whole, and its curvature matches the curvature of the steel pipe, so that the whole of the first intercepting piece 21 can fit well on the surface of the steel pipe 1 . During implementation, a pre-opening hole 11 is ...
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