A piston pump is disclosed suitable to be installed on machines for dispensing fluid products, comprising a jacket, a piston device mobile with alternate motion inside said jacket and comprising a rod and a head. The pump also comprises a pipe for fluids to enter and a pipe for fluids to exit, said pipes being disposed on the same side of the jacket and on opposite sides with respect to the piston device.

A piston pump is disclosed suitable to be installed on machines for dispensing fluid products, comprising a jacket, a piston device mobile with alternate motion inside said jacket and comprising a rod and a head. The pump also comprises a pipe for fluids to enter and a pipe for fluids to exit, said pipes being disposed on the same side of the jacket and on opposite sides with respect to the piston device.

A rotor includes a rotary body configured to rotate about a rotational shaft; a plurality of bottom parts attached to the rotary body; a plurality of arm parts that have respective rollers configured to revolve around the rotational shaft and depress a tube, and are attached to the respective bottom parts; and an adjuster that adjusts the mutual positional relation between the bottom parts in the radial direction of the rotation of the rotary body.

The invention relates to a fluid energy machine and a method for generating a fluid-volume flow and for compressing a fluid by means of the fluid energy machine according to the invention. The invention also relates to a method for refuelling a vehicle with a fluid using the method according to the invention for generating a fluid-volume flow and for compressing a fluid, and to the use of a fluid energy machine according to the invention for refuelling a motor vehicle. The fluid energy machine comprises a crank drive (20) and a drive device (10) that is mechanically connected to the crank drive (20), by means of which drive device a torque can be introduced into the crank drive (20), as well as a piston-cylinder unit (30), the piston (32) of which is mechanically connected to the crank drive (20). The drive device (10) comprises two electric motors (50, 60), the respective output members (51, 61) of which are mechanically connected to the crank drive (20).

The invention relates to a fluid energy machine and a method for generating a fluid-volume flow and for compressing a fluid by means of the fluid energy machine according to the invention. The invention also relates to a method for refuelling a vehicle with a fluid using the method according to the invention for generating a fluid-volume flow and for compressing a fluid, and to the use of a fluid energy machine according to the invention for refuelling a motor vehicle. The fluid energy machine comprises a crank drive (20) and a drive device (10) that is mechanically connected to the crank drive (20), by means of which drive device a torque can be introduced into the crank drive (20), as well as a piston-cylinder unit (30), the piston (32) of which is mechanically connected to the crank drive (20). The drive device (10) comprises two electric motors (50, 60), the respective output members (51, 61) of which are mechanically connected to the crank drive (20).

The present invention relates to a pump unit applied to a high-pressure cleaning machine, including: a water inlet chamber, a water outlet chamber, and a central chamber connected to the water inlet chamber and the water outlet chamber. The pump unit further includes a plunger disposed in the central chamber and an eccentric mechanism connected to the plunger. The eccentric mechanism drives the plunger to perform reciprocating motion in the central chamber.

The present invention relates to a pump unit applied to a high-pressure cleaning machine, including: a water inlet chamber, a water outlet chamber, and a central chamber connected to the water inlet chamber and the water outlet chamber. The pump unit further includes a plunger disposed in the central chamber and an eccentric mechanism connected to the plunger. The eccentric mechanism drives the plunger to perform reciprocating motion in the central chamber.

The present application relates to a high-pressure cleaning machine, comprising: a housing, a motor, a transmission mechanism, a pump, a handle, a detachable rechargeable battery pack and a nozzle, wherein the pump comprises a central chamber, a water inlet, a water outlet and a single plunger, a water inlet chamber connected to the water inlet, and a water outlet chamber connected to the water outlet, and wherein the plunger is disposed in the central chamber and is driven by the motor to perform reciprocating motion in the central chamber; wherein the motor, the transmission mechanism and the pump are located at one end of the handle, and the battery pack is located at the other end of the handle.

The present application relates to a high-pressure cleaning machine, comprising: a housing, a motor, a transmission mechanism, a pump, a handle, a detachable rechargeable battery pack and a nozzle, wherein the pump comprises a central chamber, a water inlet, a water outlet and a single plunger, a water inlet chamber connected to the water inlet, and a water outlet chamber connected to the water outlet, and wherein the plunger is disposed in the central chamber and is driven by the motor to perform reciprocating motion in the central chamber; wherein the motor, the transmission mechanism and the pump are located at one end of the handle, and the battery pack is located at the other end of the handle.

A closing unit system for a blowout preventer (BOP) stack includes a first fluid reservoir, a first power source, a first pump system fluidly coupled to the first fluid reservoir and electrically coupled to the first power source, and a valve manifold fluidly coupled to the first pump system via a closing unit hose assembly and configured to couple to the BOP stack. The closing unit system also includes one or more processors that are configured to receive an input indicative of an instruction to adjust an actuator associated with the BOP stack, and instruct the first power source to provide power to the first pump system to cause the first pump system to pump a fluid from the first fluid reservoir to the valve manifold in response to the input.