Double-action plunger-type deicing liquid pump

Abstract

The invention discloses a double-action plunger-type deicing liquid pump for airplane deicing liquid operation. Two plunger pump cylinders in the same structure are connected into an integral body by a crank connecting link through a piston, the plunger pump cylinders are divided into two regions, and each region is provided with a non-return valve; one power source is used for driving the two plunger pumps to work simultaneously; a liquid feed channel is connected with a liquid feed non-return valve on each plunger pump cylinder; a liquid discharge channel is connected with a liquid discharge non-return valve on each plunger pump cylinder, and the outlet of the liquid discharge channel is provided with an injection gun; and the plunger pump cylinders, liquid feed channels and liquid discharge channels are made of stainless steel. Compared with single-action pumps with the same flow rate, the double integrated pumps can raise the pressure of the injected fluid and increase the injection distance. Compared with centrifugal pumps, the frictional heat of the invention generated in the working process is very low so as not to influence the viscosity of the deicing liquid, and the invention can well maintain the characteristics of the deicing liquid. The invention is mainly used as a special pump for airplane deicing liquid for deicing and anti-icing operations.

Description

[0001] technical field [0002] The invention belongs to aircraft maintenance equipment, in particular to a special pump designed for deicing aircraft. Background technique [0003] With the increase of passenger traffic in my country and the expansion of civil aviation scale, the safety pressure of civil aviation aircraft operation increases accordingly. In particular, the lack of aircraft deicing support capacity in civil aviation airports in winter is one of the biggest hidden dangers affecting the safe operation of aircraft. Studies have found that if there are frost spots with a diameter of one millimeter per square centimeter on the fuselage, the lift of the aircraft will be reduced by 33%, which will easily cause the aircraft to stall and crash during takeoff. Therefore, aircraft deicing and fuselage pollution become the main reasons that affect the safety of aircraft operation in winter. At the same time, the problem of aircraft deicing is also the main factor that ...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when the deicing fluid is configured and output from the liquid storage tank, its (temperature) viscosity meets the requirements. However, when the deicing fluid pump is sprayed, the traditional centrifugal pump will generate heat due to stirring during operation, resulting in deicing. The viscosity of the liquid decreases

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