An anti-filling spool and valve

Abstract

Provided is a filling prevention valve element and a valve. The valve element comprises an upper valve element body, a lower element body, a turning plate, a gas filling through hole penetrating through the upper valve element body and the lower valve element body and a turning plate cavity formed between the upper valve element body and the lower valve element body; the outer surface of the lower valve element body is matched with the wall of a valve element cavity of a valve body in an airtight mode; the turning plate cavity is provided with a valve element slope in the oblique direction of the axial direction of the valve element, the top of the turning plate cavity is a valve element top of an upper valve body, and the outer surface of the valve element top is matched with the wall of the valve element cavity in an airtight mode; the gas filling through hole comprises a top hole in the valve element top and a bottom hole penetrating through the lower valve element body or penetrating through the upper valve element body and the lower valve element body, and an upper port of the bottom hole is arranged on the valve element slope; the turning plate can rotate around the lower end of the turning plate cavity freely, and the working surface of the turning plate is matched with the upper port of the bottom hole to block the bottom hole; the vertical turning plate can be completely contained in a shelter area which is formed by the area, where the projection of the part between the edge, right facing the valve element slope, of the top hole and the inner edge where the valve element top is located in the turning plate cavity passes through downwards in the axial direction of the valve element, of the turning plate cavity. The valve comprises the valve body and the valve element installed in the valve element cavity of the valve body. Safety filling reliability of the valve is improved.

Description

technical field [0001] The invention relates to a valve core used for an anti-filling structure of a pressure container valve, and also relates to a valve using the valve core. Background technique [0002] figure 1 Shown is a valve used on a liquefied petroleum gas cylinder, including a valve body 200 and a valve core 100 installed in the valve core chamber of the valve body 200 . Such as Figure 2 to Figure 6 As shown, the traditional anti-filling spool 100 includes an upper spool 110, a lower spool 130, a sail plate 120 and a filling gas through hole arranged on the upper spool 110 and the lower spool 130; The outer sides of the core 110 and the lower valve core 130 are airtightly matched with the valve core chamber wall of the valve body 200; a sail board cavity is set between the upper valve core 110 and the lower valve core 130, and the sail board 120 can rotate freely in the sail board cavity. ; On the upper valve core 110 in the sail board cavity, an inclined slop...

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is to provide an anti-filling spool, which overcomes the defects of the existing anti-filling spool that the static equilibrium state of the opening limit is easily broken and the reliability of the anti-filling is low.

[0008] The second technical problem to be solved by the present invention is to provide a valve that uses the above-mentioned anti-filling valve core to overcome that the static equilibrium state of the opening limit of the existing valve anti-filling valve core is easily broken and the anti-filling reliability is low. Defects

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