Positive Displacement Pump Components TRIZ Cases

A disposable positive displacement pump uses a rolling diaphragm to move fluid without mechanical contact.

Non-circular closure elements eliminate thread fatigue in high-pressure reciprocating pumps by using geometric interference for retention and face sealing.

A differential cylinder hydraulic piston pump removes the through-going piston rod to reduce weight and external dimensions of wave energy converters.

A fixed eccentric distance stabilizes the piston motion, reducing vibration and clearance volume in fluid machinery.

Asymmetric gas passage widths in reciprocating compressor cylinder blocks minimize lateral pipe connector protrusion.

An integrated hydraulic pump uses a single shaft for motor output and pump input, eliminating bulky spacers to reduce system volume.

Ellipsoidal cross-bore chamber connects plunger and valve bores via a continuous surface of revolution.

Segmenting the pump flange resolves the trade-off between fastening stability and installation adaptability, eliminating welding requirements.

Rail-mounted air compressors capture train kinetic energy to generate electricity, replacing costly fossil fuel generators.

Reinforcing arms and interfacing surfaces secure heavy compressor valves, enabling safe removal while preventing wear on machinery.

Hydraulic actuation drives a linear pump to extract fluids in deviated wells, eliminating mechanical rod wear and cooling the motor lubricant.

Inverted shroud assembly separates gas from liquid in reservoir fluid, preventing gas lock and bearing thermal shock in electric submersible pumps.

An oil return mechanism employs a blocking ball and elastic member to regulate fluid flow, preventing rapid jack descent under no-load conditions.

Pistons close pump openings in a pigging position, resolving the contradiction between line cleanliness and device complexity.

Eliminates screw threads on suction strainers to reduce assembly time and prevent contamination.

Non-harmonic actuator motion drives shear-induced vorticity to pump fluids, eliminating complex microvalves that compromise reliability.

Variable cross-section geometry reduces peak stress by 20% in high-pressure refrigerant compressors.

Concavo-convex oil separator geometry on electric compressor discharge paths enhances centrifugal separation of refrigerant oil.

A fuel pump high pressure connection incorporates a ring groove near the weld apex to distribute mechanical strain and improve joint accuracy.

A fluid pump uses a filter in the drive chamber ventilation path to restrict dust and moisture ingress during piston movement.

Slit-intake belt guard channels pulley-drawn air toward the pump, reducing overheating risks.

A cylindrical sleeve covers the tapered valve surface to restrict dynamic pressure application and enhance response speed.

A compensating plunger reciprocates out of phase with the pump plunger to maintain constant effective cambox volume.

Curved recess geometry stabilizes the piston, reducing vortex generation and preventing collisions.

A liquid pump housing uses a shoulder recess to form a caulking connection between the pot and cover.

A suction muffler uses a bellows connection member and plate film to manage refrigerant flow resistance.

Real-time torque estimation reduces counter-balance force overshoot and undershoot, improving convergence speed.

Merging cylinder and head into one piece eliminates assembly steps, lowering production costs for portable compressors.

A vehicular electric compressor uses a sacrificial protective component to absorb collision loads.

Circumferential recesses in axial piston liners provide clearance to prevent piston seizure and cracking under varying pressure conditions.

Variable braking torque adapts to crankshaft rotational speed, reducing noise emissions and stopping time while lowering energy consumption.

A discharge valve uses a plastic-coated nonferrous metal body to reduce weight and manufacturing costs.

An adapter plate circulates pumped fluid along the motor housing to conduct heat away from the drive mechanism.

Barrel cam halves convert motor rotation into piston reciprocation without angling the shaft, eliminating fluid pulses and pressure inefficiencies.

A rotary valve in the drain oil passage switches positions via 90-degree rotation to enable rapid deaeration of axial piston devices.

Angled shoulders trap solids and create a hydraulic seal, preventing debris from scoring the barrel and extending operating life.

Internal base block passages merge air ducts with structural support, reducing component count and improving lubricant oil refrigeration.

A unitary gauge indicator displays differential pressure and economic costs simultaneously.

A flangeless valve plate pump uses a monolithic head to simplify assembly and reduce leakage.

A spring-biased tube vents excess pressure to prevent oil contamination and reduce maintenance downtime.

A compressor cooling jacket uses a fan to create overpressure, driving cold air through dedicated outlets for heat exchangers and cylinder walls.

An automated inlet control valve uses a peristaltic pump and check valves to restore tire pressure, eliminating manual driver intervention.

An upstream filter traps foreign matter from extraction oil before it enters the thrust bearing, while a turbulence generator prevents deposition.

Torsional welding joins the closure element to the housing, eliminating screws and O-rings to reduce complexity and production costs.

A pump valve retainer secures the valve member using a head with peripheral grooves engaging radial protrusions in the fluid bore.

Torsion tubes span crankcase ribs to stiffen the hydraulic pump power end structure.

A suction cover assembly channels leakage pressure through a dedicated trap and channel to exert axial force on the nut threads.

A multiple oscillating water pumping device uses wing members to generate lifting force from fluid flow energy.