Multi-connecting-rod sealed valve with front blade

Abstract

The invention discloses a multi-connecting-rod sealed valve with a front blade. The multi-connecting-rod sealed valve comprises a valve body, the blade, a square-to-round converting part, supporting suspension arms and power arms. A driven shaft is arranged at the inner top of the valve body, a driving shaft is arranged below the driven shaft, the driven shaft is connected to the supporting suspension arms, and the other ends of the supporting suspension arms are connected with the blade. The driving shaft is connected to the power arms, and the other ends of the power arms are connected with the blade. Shaft sleeves are arranged at the ends of the driven shafts and the ends of the driving shafts correspondingly. The blade is embedded in the square-to-round converting part, and a sealing strip is arranged between the blade and the square-to-round converting part. The multi-connecting-rod sealed valve is reasonable in structure, sealing can be achieved through pressure of airflow, and friction force is basically not generated; and the driven shaft and the supporting suspension arms can limit the moving track of the blade and have the function of supporting the weight of the blade in the opening and closing process of a large-diameter valve, the load on the driving shaft is reduced, and movement torsion is reduced.

Description

technical field [0001] The invention relates to a vane front multi-link hermetic valve. Background technique [0002] Existing hermetic valves generally seal the valve by covering the blade or the valve body with rubber, and through the friction and extrusion between the blade and the valve body, but this type of valve is only suitable for small-diameter valves. If this method is used For large-diameter valves, because of the increased friction and extrusion area, the rotational torque of the valve increases, making it difficult to open and close. The process exhaust pipe is suspended on the top of the floor, and the diameter of the pipe is generally too large, so it cannot be used as a water valve. It also uses precision casting and machining methods to achieve high-precision production, so it is difficult to ensure sealing without using rubber. Contents of the invention [0003] The purpose of the present invention is to provide a vane front multi-link hermetic valve. ...

AI Technical Summary

Problems solved by technology

[0002] Existing hermetic valves generally seal the valve by covering the blade or the valve body with rubber, and through friction and extrusion between the blade and the valve body, but this type of valve is only suitable for small-diameter valves. If this method is used For large-diameter valves, because of the increased friction and extrusion area, the rotational torque of the valve increases, making it difficult to open and close. The process exhaust pipe is suspended on the top of the floor, and the diameter of the pipe is generally too large, so it cannot be used as a water valve. It also uses precision casting and machining methods to achieve high-precision production, so it is difficult to ensure sealing without using rubber

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