Positive Displacement Pump Components TRIZ Cases

A rod, plate, and flow-hole piston assembly spreads lateral loads and boosts refrigerant intake to reduce piston damage and improve reliability.

A shaft flow hole and oil groove route lubricant through the eccentric sleeve to cut connecting-rod friction and compressor energy loss.

An inclined pressure cylinder vents trapped gas through an upper bore, simplifying dialysis hydraulics while preserving precise fluid dosing.

A skirtless piston with stabilizer bars and a single gapless ring cuts friction losses while maintaining piston alignment and sealing.

Narrow-edge actuation ports and inter-plate channels cut cassette thickness while enabling direct manifold plug-in and precise pneumatic control.

A built-in overflow valve relieves excess pressure at the metering head, reducing wear, installation space, and separate safety hardware.

Clustered kidney-shaped seat holes improve gas flow while preserving seat strength, reducing clearance, leakage, and pressure drop.

A three-part valve body uses hard sealing zones and a softer middle section to cut cost and weight in high-pressure pumps.

Segmented fluid end sections remove intersecting bore stress points, improve sealing, and allow section-only replacement under fracturing wear.

A screw-bolt bearing support keeps the torque gear aligned, prevents base deformation, and stabilizes piston reciprocation.

A removable wear-resistant valve seat insert protects the strike face, improves sealing, and extends fracturing pump service intervals.

Adjustable piston and plunger diameters let one intensifier pump change output pressure ratios without altering input pressure or replacing units.

A diluted polarized lubricant bonds to pump surfaces to reduce rod-tubing friction, torque, drag, wear, and energy use in artificial lift wells.

A vacuum-driven piston and valve engine uses a separate control piston to keep surgical tools running at constant frequency without motor weight or air contamination.

Modular fluid end sections and dual manifolds reduce stress, corrosion, and erosion while simplifying replacement in high-pressure pumps.

A stepped piston clearance profile cuts refrigerant leakage while limiting cylinder friction loss and improving floating force.

Alternating primary and secondary compression balances piston stress, raises exhaust pressure, and cuts vibration in a compact vehicle air compressor.

Multiple motors and a detachable gearbox drive the fracturing pump while heating and cooling control temperature, cutting maintenance and emissions.

Radial clearance and swaged or threaded cylinder fixing prevent plunger sticking while maintaining fuel pressure in a high-pressure fuel pump.

A hinged wall-mounted body and elastic hose reel clear floor obstructions, improve safety, and simplify compressed-air hose rewinding.

Alternating cooling and outlet ducts in the cylinder head and housing improve dead-center heat removal and reduce oil ejection.

Ribs and matching slits force correct valve cartridge orientation in a reciprocating pump, preventing reversed flow paths and assembly errors.

A porous membrane feeds and filters refrigerant at the piston bearing surface, reducing leakage, clogging, and nozzle complexity.

Metal powder injection molding with debinding and hot isostatic pressing cuts material loss while producing dense poppet valves for high stress.

A sliding cover and ring retrofit compresses compressor valve seals evenly, preventing gas leakage without significant cavity machining.

A replaceable ceramic sleeve shields the piston rod from abrasive seal contact, cutting pump wear, downtime, and replacement cost.

Combining check-valve and shut-off functions in one pump valve cuts pipe resistance and installation space while enabling backflow prevention.

Offset non-intersecting passages route intake and discharge flow to cut stress concentration, erosion, and fluid end replacement frequency.

Internal bearings inside the valve plate tube strengthen the pivot joint, simplify assembly, and prevent back rotation in compressors and vacuum pumps.

Tapered wedge joints let worn fluid end segments be replaced in the field, cutting downtime, repair cost, and full assembly scrap.

An integrated hollow tube and internal bearing support the valve plate shaft, reducing breakage, back rotation, and maintenance in compressors and vacuum pumps.

An integral valve and slipper interface cut friction and power loss while absorbing unbalanced forces in axial piston machines.

A swaged collar and unitary retainer improve valve centering, compression consistency, and bending resistance in fracking pump assemblies.

Seal surface irregularities let pressure propagate between valve mating surfaces, cutting opening differential pressure and shock loads.

Obtuse valve seat and body engagement surfaces enlarge the valve gap to cut cavitation, wear, pressure loss, and replacement downtime.

A radial gap in the center support and separable end caps reduce galling, improve replaceability, and extend piston assembly life.

An offset cylinder and inclined piston top keep the piston parallel to the valve plate at top dead center, limiting gap volume and interference.

Circumferential spring strands align with the actuator axis to cut lateral force, raise load resistance, and keep linear compressors compact.

Groove-linked radial flow paths split disc valve sealing loads, cutting edge wear while keeping pressure drop low at high differential pressure.

An overflow valve built into the metering head relieves excess pressure at the source, reducing wear, leaks, and extra valve-block space.

Microporous bearing feed holes guide refrigerant to the piston surface, cutting leakage and clogging while simplifying nozzle machining.

Hydrodynamic turning guides and downstream flow guides restore velocity profile and cut swirl, pressure drop, noise, and cavitation.

A stress suppression member with a valve-exposing section cuts impact noise while making valve plate attachment faults visible during inspection.

A check-valve hydraulic block and pressure regulator keep motor inlet flow unidirectional and prevent priming pump cavitation during pump reversal.

A rotating and fixed oil supply structure keeps compressor lubrication stable in both shaft directions, avoiding one-way pump limits.

A flip-reusable valve member with dual sealing ends and detachable guide legs cuts wear-driven replacements and downtime in abrasive high-pressure pumps.

A moveable purge valve opens to clear fuel vapor during operation and closes at idle to prevent siphoning and fuel loss.

Fine piston surface irregularities and gas inflow passages create stable gas lubrication that cuts wear, oil ingress, and misalignment friction.

A porous cylinder insert meters refrigerant to the bearing surface, filtering debris while cutting leakage, clogging, and nozzle complexity.

A two-stage bearing inflow passage supports the piston with less refrigerant, improving compression efficiency and resisting orifice clogging.