Integrated pneumatic vent butterfly valve

Abstract

An integrated pneumatic vent butterfly valve comprises an integrated solenoid valve, an integrated pneumatic actuating mechanism and an integrated vent butterfly valve body. An integrated valve body of the integrated solenoid valve is provided with a shared medium inlet end, a shared medium outlet end, a first working port, a second working port and five mounting holes; a coil protective outer shell is arranged outside a coil assembly of the solenoid valve and provided with a lead hole, and a coil lead enters a signal device junction box directly through the lead hole; the integrated solenoid valve is fixedly connected with the integrated pneumatic actuating mechanism by using screws through the five mounting holes, and the integrated pneumatic actuating mechanism is fixedly connected with the integrated vent butterfly valve body by using screws; an inner hole in the lower end of an air cylinder shaft of the integrated pneumatic actuating mechanism is matched with a butterfly valve square shaft end of the integrated vent butterfly valve body to carry out valve switching transmission. The integrated pneumatic vent butterfly valve can be turned on and turned off through a manual operating device under the condition of power failure or air source failure. The integrated pneumatic vent butterfly valve is capable of bearing high pressure, small in size, light in weight, and easy to install because the number of auxiliary pipelines and circuits is small; besides, the integrated pneumatic vent butterfly valve can meet the requirement for special environment conditions of three proofings and the like because all the components are machined by using stainless steel or copper alloy materials.

Description

technical field [0001] The invention relates to a valve, in particular to an integrated pneumatic ventilation butterfly valve for medium-pressure gas medium control. Background technique [0002] As an important accessory of the ship's warehouse ventilation system - the pneumatic ventilation butterfly valve plays a key role in the ship's ventilation system. Under normal circumstances, a single-acting actuator uses a solenoid valve; a double-acting actuator is controlled by two three-way solenoid valves or one four-way solenoid valve, and the air source control pressure is mostly below 0.8MPa, and the solenoid valve is generally placed in In the control box, it is connected with the pneumatic actuator of the butterfly valve through the pipeline system. This structural form makes the control system cumbersome and bulky, inconvenient for maintenance, limited installation location, and complicated arrangement of gas source pipelines and power supplies. At the same time, the ex...

AI Technical Summary

Problems solved by technology

This structural form makes the control system cumbersome and bulky, inconvenient for maintenance, limited installation location, and complicated layout of gas source pipelines and power supplies, etc.

At the same time, the existing products cannot meet the requirements of special marine environmental conditions such as high medium pressure and humidity, high temperature, salt spray, mold, etc., and cannot meet the needs of the system.

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