Fluid coupling

A liquid coupling or hydraulic coupling is a hydrodynamic or ‘hydrokinetic’ device used to transmit rotating mechanical power. It has been used in automobile transmissions as an alternative to a mechanical clutch.

Fluid couplings are hydrodynamic gadgets that transmit rotation between shafts by acceleration and deceleration of hydraulic fluid. Shafts are used industrially to provide rotary motion to a wide fluid coupling china spectrum of vehicles and tools and shaft couplings are fundamental to providing secure rigid, flexible or non-linear connection between shafts, wheels and rotary equipment.

Fluid couplings consist of a casing containing an impeller in the input or driving shaft and a runner about the output shaft. Both these contain a fluid which is normally oil that is added to the coupling through a filling plug on the housing. The impeller, which acts as a pump, and the runner, which functions as a turbine, are both bladed rotors. The components of fluid couplings are generally crafted from metallic materials-aluminum, steel or stainless steel. Fluid couplings are used in the motor vehicle, railroad, aerospace, marine and mining sectors. They are used in the transmissions of automobiles as an alternative to mechanical clutches. Forklifts, cranes, pumps of most kinds, mining machinery, diesel trains, aircrafts and rotationally-powered commercial machinery all use fluid coupling when an application requires variable speed procedure and a startup without shock loading the machine. Manufacturers make use of these couplings to connect rotary products such as drive shafts, series shafts, generators, wheels, pumps and turbines in a variety of automotive, coal and oil, aerospace, water and waste treatment and construction industries.

In a fluid coupling, the impeller and rotor are both bowl-shaped and have many radial vanes. They face each other but unlike gear couplings have no mechanical interconnection rather than touch. Fluid is usually directed by the pump in to the impeller. The driving turbine or pump is normally rotated by an internal combustion engine or electrical engine imparting both linear and rotational motion to the fluid. The velocity and energy is definitely transferred to the fluid when the impeller rotates. It really is then changed into mechanical energy in the rotor. Every fluid coupling has differing stall speeds, which is the highest acceleration that the pump can change when the runner is normally locked and maximum input power is applied. Slipping always occurs because the input and output angular velocities are similar, and then the coupling cannot reach complete power efficiency-some of it will always be lost in the fluid friction and turbulence. Flexible shaft couplings such as fluid couplings are essential because during procedure, some types of shafts tend to shift, causing misalignment. Flexible couplings provide efficient lodging for moderate shaft misalignment occurring when the shafts’ axes of rotation become skewed. Shaft movement is caused by bumps or vibration and it results in parallel, angular or skewed shaft misalignment.
Quick release coupling (quick connect-disconnect coupling), is a mechanical device,that delivers a fast, easy way to repeatedly connect and disconnect any liquid line.

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