Positive Displacement Pump Components TRIZ Cases

A 27:104 pulley-to-flywheel ratio boosts compressor torque under high loads without requiring a more powerful motor.

This case shows how grooved stop surfaces relieve fluid pressure while preserving fuel-lubricant separation and seal service life.

This vacuum system switches between a heat exchanger and cooling block by pump load to speed temperature regulation and reduce power use.

A high-pressure pump plug uses a short sealing zone and diametral clearance to enable rocking insertion and easier removal.

Compressed air and an auger generate swirling flow during pump cycles, cleaning internal surfaces without separate maintenance.

Multiple elastic contact regions reduce leakage and friction, supporting precise medical liquid delivery with low driving force.

This fluid-end case uses two tapered bore portions to reduce intersection stress, extend fatigue life, and secure valve retainers.

This medical peristaltic pump merges the locking lever and spring to reduce assembly errors while securing tube insertion and clamping.

A knurled steel sleeve and adhesive interface address pump wear, leakage, and difficult assembly in oral irrigators.

This medical tube pump integrates the spring and locking lever to reduce assembly errors and automate reliable hose clamping.

This case shows how controlled valves reverse a high-pressure plunger pump, driving a generator while preserving pressure generation.

Multiple valve-seat support surfaces tune sealing-element stroke for different liquid viscosities without adding parts.

Radial membrane chambers improve stress distribution as compressor capacity scales.

This case shows how reciprocating piston chambers and check valves recover energy when lifting liquids against deep-well hydraulic heads.

A pressure-controlled lubrication chamber limits media leakage, preserves lubrication, and supports higher-frequency pump operation.

A screw-fastened plunger barrel reduces pump size while preserving hole roundness.

A longitudinal liner seal supports closer piston spacing, longer seal life, and reduced maintenance in high-pressure reciprocating pumps.

A movable anti-return piece uses compressed air and vacuum pressure to open and seal compressor air holes, improving closure reliability.

An evacuation valve and flow retarder remove excess liquid while limiting pressure loss and flash vaporization during compression.

This case uses a bidirectional rolling seal and switchable water pressure to prevent stalling and keep dosing proportional without power.

An onboard pressure sensor and control board adjust inflation and deflation motors to prevent overpressure or insufficient inflation.

A stepped piston uses a pressure-tight annular seal to accommodate wobbling, reducing compressed-air leaks and noise.

A porous flow retarder regulates excess liquid discharge between cryogenic stages, limiting pressure loss, vaporization, and cavitation.

Successive-cylinder fluid displacement members manage commutation pressure changes, helping prevent noise and vibration at seal lands.

A nested second muffler with reinforcing ribs addresses limited space, noise reduction, and rigidity in a linear compressor.

This linear FRAC pump case uses angled deflectors to redirect high-pressure fluid after packing seal failure.

An adjustable screw and support surface simplify diaphragm pump head fastening, reducing assembly time and preventing over-torque.

A swash plate pump switches plunger roles by pressure to shorten tool operation while limiting motor load and battery consumption.

Partitioned gas chambers enable precise pressure control in an elastic chemical-liquid pump.

A pocket-held shank stabilizes elastic pump valves while vertical cylinders simplify air-bubble venting at high flow rates.

A segmented diaphragm pump pressurizes mix and gas separately, supporting steady flow and consistent soft serve overrun.

A fixed piston and intermediate cylinder use cooled drive fluid to remove compression heat while separating it from the gas.

A flange and bracket mount auxiliary pumps without machining, distributing weight to protect bearings and the gearbox.

A piezoelectric diaphragm pump and metal-foil filter improve implant fluid control by blocking particulates.

A portable tank uses an elevated rim and angled spill face to redirect overflow from electronics during fluid transfer.

This case shows how compressor air gaps and insulation reduce heat transfer for vehicle compressed-air systems without water cooling.

Centrifugal oil transport through shaft concavities and rotor channels supports bearings and upper motor coils.

Pre-prepared replacement seals and a magazine changeover mechanism simplify high-pressure compressor maintenance during operation.

An externally mounted filter and guide tube protect enclosed compressor components from contaminants and corrosion.

A pressure plate and centrifugal swing rod vent the pump mechanically, reducing noise, volume, and production cost.

This case uses a shaped coupling portion and elastic guide to join a linear compressor back cover without welding or gaps.

A separated drive and fluid module protects electronics while supporting efficient thick-fluid pumping and easier maintenance.

Projections on the liner create a longer airflow path, helping remove oil from crankcase air before it reaches the compression chamber.

Extended joining flanges enable continuous full-penetration welds, reducing complexity and leak risk in pump housings.

This case combines a pneumatic syringe pump and hinged clamp to reach high pressure without a separate pressure chamber.

A rigid upper frame mounts the motor and conversion system to transfer torque while managing vibration in vertical cryogenic pumping.

This case addresses poor thermal contact and laminar flow with a directly attached cooling element, flat void, and corrugated channels.