Gravity action-type ball valve instantaneous opening and closing control device

Abstract

The invention relates to a gravity action-type ball valve instantaneous opening and closing control device. The device comprises a valve assembly, a drive limiting assembly, a power assembly, a jack (11) and an electromagnetic locking mechanism (9). The valve assembly comprises a valve body (1) and a valve element (2). According to the drive limiting assembly, a drive wheel disc (3) is connected with the valve element (2) and drives the valve element (2) to rotate, and a movable limiting block (4) and a reset handle (5) are arranged on the drive wheel disc (3). The power assembly comprises a steel cable (7), a reversing pulley (8) and a balance weight (10). One end of the steel cable (7) is connected with the drive wheel disc (3), and the other end of the steel cable (7) winds across the reversing pulley (8) and then is connected with the balance weight (10). Compared with the prior art, the gravity action-type ball valve instantaneous opening and closing control device is large in ball valve drift diameter, small in medium passing resistance and good in sealing property. The forward and reverse movement inertia influence can be avoided, opening and closing can be achieved quickly, and the valve opening and closing time can be controlled by changing the balance weight. The gravity action-type ball valve instantaneous opening and closing control device can be used in an explosive atmosphere and has the advantages that the manufacturing cost is low, the structure is simple and maintenance in the using process is easy.

Description

technical field [0001] The invention relates to a gravity action type ball valve instantaneous opening and closing control device. The main idea is to use gravity to drive the ball valve core to rotate 180° in the same direction to realize the instantaneous opening and closing of the valve, and to control the opening and closing time by changing the counterweight. Background technique [0002] Valves are the most commonly used control components in industrial manufacturing and instrument science, and are used in fields such as fluid delivery control and pipeline isolation. At present, there are many types of valves, and various complex valve families are derived under various working conditions and control requirements. From the perspective of valve structure, they are divided into butterfly valves, ball valves, needle valves, diaphragm valves, etc., and from the perspective of power. Pneumatic valves, solenoid valves, manual valves and various dynamic valves, etc. Valves c...

AI Technical Summary

Problems solved by technology

[0004] However, the pilot-operated solenoid valve has irreparable theoretical deficiencies. First, it adopts the "electromagnetic-pneumatic" combination method, and the opening and closing time is greatly disturbed by electromagnetic and exhaust, with great uncertainty; the second valve The action is reci

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