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The Hydraulic Coupling Has High Biting Resistance

Ningbo E.H Hydraulic Co.,Ltd | Updated: Sep 14, 2017

The hydraulic coupling includes an inner sleeve and a coat arranged from inside and outside, and the outer surface of the inner sleeve and the inner surface of the jacket is conical, and the outer surface of the inner sleeve is a soft nitriding surface, which is divided into three layers, the alloy nitrogen-carbon compound layer, Hydraulic Couplings the diffusion layer and the substrate layer The inner sleeve of the hydraulic coupling is treated with soft nitriding, which can realize the nitrogen and carbon infiltration in the inner sleeve, thus changing the surface performance, the dry friction coefficient can reach 0.4-0.65, and has high resistance to biting, abrasion resistance, Hydraulic Couplings fatigue resistance and corrosion resistance.

Hydraulic couplings work smoothly, reliable, can be in a wider range of stepless speed regulation, can be self-lubricating, can make the power machine load-free start-up. Power machine speed is equal to pump speed, transmission efficiency is 95---97%, when the pump speed is reduced to 25---30%, the transmission efficiency is 68---70%, in the automatic control of the pump station, stop the pump often due to the inertia of the pump group and the backflow of water in the tube to cause the action of the hammer. However, Hydraulic Couplings the use of this structure, the need to add another hydraulic coupling and its internal oil, if the use of hydraulic coupling, the earth can reduce the water hammer (or hydraulic pump) coupling cold oil equipment, such as the more complex.

The hydraulic coupling is composed of a transmission pump wheel and a transmission turbine, such as the figure, the transmission pump wheel 1 and the Power machine shaft connection, transmission turbine 2 and pump shaft connection. Full working fluid (oil or water) in the coupling before operation Power machine running after driving pump shaft rotation, when the fluid in the transmission pump wheel due to the role of centrifugal force and was thrown into the cavity 3, and 3 of the liquid pressure is greater than the transmission turbine 2 pressure, Hydraulic Couplings it was also pressed into the transmission turbine wheel, At this time the transmission turbine blades are rotated by hydraulic action, thus driving the pump shaft rotation. At the same time, the turbine blade again presses the liquid into the inside of the transmission pump wheel, Hydraulic Couplings so that the liquid circulates in the cavity and transmits energy continuously.

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Ningbo E.H Hydraulic Co.,Ltd