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The double-acting manual hydraulic pump

Used to lift and move heavy equipment, the double-acting hydraulic pump is capable of delivering hydraulic power in both directions. Like other types of manual hydraulic pumps, this marvel of technology can be useful in many industrial sectors. Whether you're in construction, agriculture, mining or manufacturing, the double-acting hydraulic hand pump can help you perform tasks with incredible efficiency and precision. In this extract, we'll explore the benefits of this powerful tool and the different applications it can be used for.

What is adouble-actinghydraulic hand pump?

Pompe hydraulique manuelle à double course pour vérins à double effet -990011993

A double-acting hydraulic hand pump is a hand pump that can be used to create hydraulic force by manually operating a handle.

Capable of delivering hydraulic pressure in both directions, pushing and pulling, this pump is preferred for its simplicity, reliability and ease of use.

Because they do not require electricity or other external power sources to operate, double-acting manual hydraulic pumps are particularly useful for lifting and pressing applications.

How does work?

The double-acting hydraulic hand pump is equipped with two separate pumping chambers, each with a directional valve, which allows hydraulic pressure to be generated in both directions through the force of the operator.

As soon as the operator presses the pump handle, a piston inside the pump cylinder begins to move.

As the piston moves outwards, it draws hydraulic oil into the pump via a suction valve. This creates a vacuum inside the pump. When the piston moves inwards, the hydraulic oil is expelled from the pump via a pressure valve. This fluid is then used to move heavy equipment or to apply force to disc brakes.

What factors influence the operation of this pump?

Pump operation can be influenced by a number of factors, including pressure, flow rate, fluid viscosity, temperature and orifice size.

- Pressure

The pump must generate enough power to overcome the resistance of the fluid and move it from one place to another.

If the driving force is too weak, the pump will not be able to move the fluid efficiently. On the other hand, if the pressure is too high, this can cause premature wear of pump components and lead to leaks.

- Flow rate

The amount of fluid the pump can move per unit of time, the flow rate or flow is another crucial factor that affects the operation of the pump.

If the flow speed is too high, this can lead to overheating of the pump and premature wear of components. On the other hand, if the flow speed is too low, the pump will not be able to deliver enough liquid to meet the needs of the application.

- Viscosity

The viscosity of the fluid is also important as it affects the ease with which the fluid can be moved through the pump system.

More viscous fluids require more pressure to move and can also reduce fluid spillage at the pump.

The viscosity of the fluid should also be taken into account when selecting the right pump for a specific application.

- Temperature

While high temperatures can lead to leaks and pump malfunctions, low temperatures can also affect pump operation by reducing fluid viscosity and increasing resistance to flow.

- Orifice size

A larger orifice can allow more liquid to pass through, but this can also reduce the pump's power. On the other hand, a smaller orifice can increase pressure, but reduce the speed of flow of the hydraulic fluid.

What types of double-acting hydraulic hand pumps are there?

Manuel de la pompe hydraulique double effet main - Chine La pompe à double effet, l′homme

Several types of double-acting hydraulic manual pump are available on the French market, each with its own specific features.

The most common are the double-acting manual piston, gear, vane and lever pumps.

- Double-acting manual gear pump

This pump uses two gears to compress the hydraulic fluid. It is more compact and lightweight than other types of double-acting pump, making it ideal for use in confined spaces.

Gear pumps are often used for light lifting applications or for machine tools requiring medium pressure.

- Rotary vane hand pump

This pump uses vanes to compress hydraulic fluid.

Rotary vane pumps are ideal for applications requiring high motive power and constant flow, such as CNC machine tools.

- Hand lever pump

This pump uses a lever to compress hydraulic fluid.

Lever-operated pumps are often used for mobile applications or for applications requiring a pump that is easy to use.

What are the applications of the double-acting hydraulic hand pump?

The double-acting hydraulic hand pump is used in many industries, including construction, agriculture, automotive and marine.

In the construction industry, it is used to power hydraulic jacks that lift heavy loads such as steel beams. It is also used to push and pull formwork panels.

In the agricultural industry, it is used to supply pressure to hydraulic tools such as sprayers and front-end loaders.

In the automotive industry, it is used to lift cars for repair and maintenance.

Finally, in the marine industry, it is used to operate winches and grapples.

The double-acting hydraulic hand pump can also be used in the oil and gas industry to operate valves.

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