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

Liquid couplings are hydrodynamic gadgets that transmit rotation between shafts by acceleration and deceleration of hydraulic liquid. Shafts are used industrially to supply rotary motion to a wide spectrum of vehicles and apparatus and shaft couplings are key to providing protected rigid, flexible or nonlinear connection between shafts, tires and rotary equipment.

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

In a fluid coupling, the impeller and rotor are both bowl-shaped and have many radial vanes. They face each other but unlike equipment couplings haven’t any mechanical interconnection and never touch. Fluid is certainly directed by the pump in to the impeller. The driving turbine or pump is usually rotated by an interior combustion engine or electrical engine imparting both linear and rotational motion to the liquid. The velocity and energy is usually transferred to the fluid when the impeller rotates. It really is then converted into mechanical energy in the rotor. Every liquid coupling offers differing stall speeds, which may be the highest speed that the pump can change when the runner is normally locked and maximum insight power is applied. Slipping always occurs because the input and output angular velocities are similar, and therefore the coupling cannot reach full power efficiency-some of it will always be lost in the liquid friction and turbulence. Versatile shaft couplings such as fluid couplings are necessary because during operation, some types of shafts have a tendency to shift, causing misalignment. Versatile couplings provide efficient accommodation for moderate shaft misalignment that occurs when the shafts’ axes of rotation become skewed. Shaft movement is due to bumps or vibration and it results in parallel, angular or skewed shaft misalignment.
Quick release coupling (quick connect-disconnect coupling), is definitely a mechanical device,that delivers a fast, easy way to repeatedly connect and disconnect any liquid line.