Rotary Piston Pumps TRIZ Cases

A variable displacement vane pump adjusts lubrication oil output via a control slider and dual mechanisms, reducing energy loss from excess pressure production.

Interlocking screw conveyors in the melt pump prevent backflow and reduce pulsation, eliminating complex gear pumps.

An eccentric rotary vane vacuum pump integrates the power source and electronics housing to reduce installation space.

Pivoting the mobile ring changes chamber eccentricity, expanding flow rate ratios while minimizing the pump volume.

A rotary pump mechanical seal uses a perpendicular locking pin to prevent rotation and axial displacement of the stationary ring.

Curved piston faces redirect axial fluid forces radially outward, preventing contaminants from entering the clearance space and causing valve seizure.

An oil discharge hole directs fluid flow into compression chambers, reducing agitation loss and noise while maintaining supporting force.

A radially removable spacer ring with centering means simplifies stator assembly in eccentric screw pumps.

Multi-stage gear pump uses a variable speed gearbox to adjust rotational speeds, preventing excess fuel heating and varnish formation.

A variable pitch screw rotor modifies pressure distribution to expand the liquid feed port range while reducing stirring loss in miniaturized compressors.

Carbon-filled PEEK gears and 316 stainless steel bearings prevent urea crystallization while a pressure sensor protects the pump from dry-running damage.

Preliminary casting with increased thickness resolves hardness and wear trade-offs in scroll compressor spiraling parts.

Segmented air inlets guide cool suction air into a surrounding cooling chamber, absorbing noise and vibration while preventing high discharge temperatures.

Cycloidal rotor profiles and internal fluid cooling reduce internal leakages in dry-running spindle compressors.

A refueling screw compressor diagnostic mode stabilizes internal measurement conditions by controlling valve states and fan speed.

An eccentric rotor within a rotating sleeve eliminates radial sliding friction through a dynamic vane seal, extending device lifespan.

Stiffening ribs with aerodynamic profiles segment the delivery conduit, reducing overall dimensions while preventing cavitation.

Segmented suspension portions with variable rigidity distribute contact stress uniformly, reducing wear and improving lubrication under heavy loads.

A rotary displacement pump uses a rectifier gear system to maintain constant output rotation direction regardless of input motor rotation.

A motor-driven compressor adjusts high-temperature stop thresholds based on three-phase or two-phase modulation to protect the drive circuit.

A taper surface on the oil pump extension portion moderates flow passage area changes to prevent cavitation.

Encoder module detects cardan shaft rotation, decoupling valve element from output shaft to resolve mechanical coupling contradictions.

Segmented nested cooling circuits remove heat from the rotor body to prevent temperature-induced performance degradation and extend service life.

An electronic controller cycles a scroll pump cooling fan speed based on motor power draw to minimize noise during tip seal burnishing.

A negative pressure pump uses a conductive resin vane to dissipate static electricity.

A valve arrangement uses plates and vanes to compress gas without precision seals.

Radial and axial bearings position rotors while a parallel squeeze film damper reduces vibration near critical speeds.

Auxiliary intake and discharge ports balance fluid flow in a dual lobe vane pump to stabilize pressure distribution.

Pulse-width-modulated unloading valves adjust compressor capacity, maintaining low pressure ratios and preventing damage during temperature control.

Variable radial thickness in spool grooves resists deformation under high pressure, minimizing leakage and throttling resistance.

Integrally molded resin intake nozzle eliminates separate cover assembly in transverse internal gear pumps.

Segmented screw pump housing uses rotatable coupling to adjust inlet and outlet orientation, resolving installation flexibility constraints.

Forward primary seal extraction enables rotor removal without detaching the pump body from the gear case.

An electric oil pump housing forms an oil compartment to dissipate heat from the motor stator using the pump's own fluid.

Segmented outer member reduces driving torque while maintaining sealing property.

Axially convex toothing on pump drive shafts absorbs torsional shocks through frictional forces, compensating for skewed positions to reduce wear.

Contoured tappet pegs engage oval rotor recesses to reduce surface pressure and prevent deep material penetration, extending component service life.

Non-smooth curve edges on the tri-lobe rotor prevent medicament transfer between chambers, ensuring accurate volumetric flow.

Continuous curvature tooth profiles maintain consistent clearance, reducing outer diameter while enhancing durability and minimizing leakage.

Outer peripheral communication passages route surplus fluid between suction ports, suppressing cavitation caused by varying hydraulic pressure.

Elastic synchronization eliminates gear clogging and oil lubrication needs in rotary piston pumps.

A spring holder pin crosses the spring hole to retain the vane spring, eliminating the high pressing force required for assembly.

Axial and circumferential coolant conduits manage heat dissipation across the rotor, resolving suboptimal temperature control in conventional systems.

A gear pump plate member routes fluid through separate communication paths to increase oil path area and reduce pressure loss.

A vacuum pump oil outlet uses a relief valve to discharge viscous fluid during cold starts.

Rigid shafts replace flexible joints in this pump design, eliminating failure risks while adapting to varying bottle sizes.

An integrated pump plate and cam ring structure dissipates heat through a connection unit extending away from the bottom lid portion.

Inner and outer peripheral passages separate cylinder heating from fluid discharge, reducing pulsation noise while preventing screw rotor seizing.

A gerotor pump circulates hydraulic fluid to generate viscous resistance against drum rotation in hose reels.

Continuous rotor rotation generates sinusoidal fluid flow without mechanical conversion, reducing pump weight and energy loss in aircraft vibration isolation.