Speed stabilizing mechanism for control valve and pressure feed type speed stabilizing valve

Abstract

The invention discloses a speed stabilizing mechanism for a control valve and a pressure feed type speed stabilizing valve and relates to the field of control valves. The speed stabilizing mechanism for the control valve comprises a sliding valve core and an elastic member. The sliding valve core is arranged in the control valve, and a valve port is formed in the position, corresponding to a control valve flow passage, of the sliding valve core. The elastic member is used for applying set pressure opposite to the flow passage pressure direction to the sliding valve core, the valve port is driven to move in the direction of reducing the overlap amount of the valve port and the control valve flow passage under the action of the flow passage pressure when the flow passage pressure of the control valve flow passage is greater than the set pressure to reduce the opening degree of the control valve flow passage, and the sliding valve core is driven to move in the direction of increasing theoverlap amount of the valve port and the control valve flow passage under the action of the set pressure when the flow passage pressure of the control valve flow passage is less than the set pressureto increase the opening degree of the control valve flow passage. The speed stabilizing mechanism enables pneumatic equipment or hydraulic equipment to operate at a constant speed and solves the problems of unstable and inaccurate operation of the pneumatic equipment or hydraulic equipment.

Description

Technical field [0001] The invention relates to the field of control valves, in particular to a speed-stabilizing mechanism of a control valve and a pressure-fed speed-stabilizing valve. Background technique [0002] The traditional pneumatic balance crane (pseudo balance) is designed as a simple and efficient fast lifting device. The lifting speed is mainly controlled by the opening of the handle button valve. Product users need to pass a period of training to be proficient in operation. Especially for lighter loads or empty hooks, the ascent speed is difficult to control. Untrained personnel can be dangerous when using the equipment for the first time. When using the coaxial sliding sleeve handle, the impact of speed makes the operating experience extremely poor. The traditional speed control of pneumatic products is realized by the throttle valve. However, the throttle valve is only suitable for products with a single weight. When the product weight changes greatly, the o...

AI Technical Summary

Problems solved by technology

However, the throttle valve is only suitable for products with a single weight. When the weight of the product changes greatly, it is necessary to manually adjust the opening of the throttle valve, which is cumbersome to operate and low in efficiency.

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