A pilot-operated overflow valve for aircraft deicing fluid

Abstract

A pilot operated overflow valve for aircraft deicing fluid comprises a damping hole locking screw, an auxiliary valve core, an auxiliary valve spring, an auxiliary valve tailstock, an auxiliary valve locking screw, an auxiliary valve core support, a protection cover, a main valve body, a main valve sleeve, a spring support, a main valve core, a main valve spring, a fixed throttling hole and a main valve cover. The main valve sleeve, the spring support, the main valve core and the main valve spring are arranged inside the main valve body. The main valve cover is installed at the upper end of the main valve body. The damping hole locking screw, the auxiliary valve core, the auxiliary valve spring, the auxiliary valve tailstock, the auxiliary valve locking screw, the auxiliary valve core support and the protection cover are installed on the main valve cover. The pilot operated overflow valve for the aircraft deicing fluid has the advantages that the overall structural design is reasonable, the sealing effect is good, flowing resistance is low, sensitivity is high, operation, use and maintenance are convenient, and the service life is long; the main components are made of stainless steel materials, and therefore the corrosion resistance is good.

Description

technical field [0001] The invention relates to a pilot-operated overflow valve, in particular to a pilot-operated overflow valve for aircraft deicing fluid with high viscosity, high temperature and large flow. Background technique [0002] Aircraft deicing fluid is a liquid used to remove ice accumulated on the skin of the aircraft. It has the characteristics of high viscosity, high temperature, and large flow rate. In addition, it is also corrosive to a certain extent. When in use, maintenance personnel are required to spray it on the surface of the aircraft through a spray gun connected to a deicing liquid tank through a pipeline. A pilot-operated overflow valve for overflowing the deicing fluid is usually installed on the pipeline between the deicing fluid tank and the spray gun. At present, the commonly used pilot-operated relief valve has a slow response speed when used, and the main valve core is easily corroded and damaged, so the expected effect cannot be achieved,...

AI Technical Summary

Problems solved by technology

At present, the commonly used pilot-operated relief valve has a slow response speed when used, and the main valve core is easily corroded and damaged, so the expected effect cannot be achieved, which will bring a lot of inconvenience to the crew to spray deicing fluid, and also To a certain extent, it affects the efficiency of aircraft deicing

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