Abstract: A portable gas source (PGS) comprising a housing and a compressor disposed within the housing. The compressor includes a first air inlet, a second air inlet, and an air outlet. The PGS further comprises a compressor dampening system including resilient first and second bellows which are each operatively interposed between the compressor and the housing and adapted to dampen movement of the compressor along multiple axes, with the first and second bellows at least partially defining respective ones of the first and second air inlets, and each fluidly communicating with ambient air. The dampening system also includes, among other structures, resilient first and second side bands which are cooperatively engaged to and extend between the compressor and the housing in opposed relation to each other, each of the first and second side bands likewise being adapted to dampen movement of the compressor along multiple axes.

Abstract: An air pump includes: a pump body defining a first opening and an air vent in different positions and an airflow channel in communication with the first opening and the air vent; a connector connected to the pump body and defining an inflation port; an airflow driving device arranged within the pump body. The airflow driving device is to perform one or more of the following operations: compressing air drawn into the pump body through the air vent and pump the air out through the inflation port; allowing the air to enter the pump body through the inflation port and be exhausted through the air vent; and driving the air to enter the pump body from the first opening, flow through the airflow channel and exit the pump body from the air vent.

Abstract: A water block includes an air-cooling module, a multi-layer heat-conducting structure and a water pump. The air-cooling module is provided above the water pump, and a pump bottom casing is provided below the water pump. The multi-layer heat-conducting structure is provided below the pump bottom casing, and a heat-conducting bottom casing is provided below the multi-layer heat-conducting structure. The multi-layer heat-conducting structure is formed, from top to bottom, by a top layer, a main body, an interlayer, and a bottom layer. A multi-layer heat-dissipation fin is provided inside the multi-layer heat-conducting structure.

Abstract: A pump comprising a fluid end comprising a bellows housing having an interior volume, a power end, a reciprocating element, a bellows disposed at least partially within the bellows housing and dividing the interior volume of the bellows housing into a first volume interior to the bellows and a second volume exterior to the bellows, suction valve(s) fluidly coupled to the second volume of the bellows housing. and discharge valve(s) fluidly coupled to the second volume of the bellows housing. The suction valve(s), the discharge valve(s), or both the suction valve(s) and the discharge valve(s) comprise a redundant valve including at least two of said valves, such that, during normal operation, one of the at least two said valves of the redundant valve is open/online while another of the at least two said valves of the redundant valve is closed/offline.

Abstract: An air-pulse generating device and an airflow generating method are disclosed. An air-pulse generating device includes a flap pair, including a first flap and a second flap opposite to each other. The first flap and the second flap oscillate at an oscillation frequency and oscillate in an out-of-phase fashion with each other; wherein during an oscillation of the flap pair, the flap pair forms a virtual valve or an opening at an opening rate corresponding to the oscillation frequency.

Abstract: An air supply system includes an air pump assembly to generate compressed air, a liquid circulation pipe to circulate a cooling liquid, a sensor, and a programmable control board. The air pump assembly includes an outer sealed box enclosing an inner sealed box, which further encloses air pump machinery. A first set of springs are disposed between the air pump machinery and the inner sealed box and a second set of springs are disposed between the outer sealed box and the inner sealed box. The liquid circulation pipe connects the air pump machinery to liquid cooling components outside the outer sealed box. The sensor is coupled to an output of the air pump assembly to measure a characteristic of the compressed air during operation. The programmable control board controls the speed of a motor in the air pump machinery according to program instructions and measurements of the sensor.

Abstract: A liquid chromatography fluid supply apparatus, for providing a mixture of a plurality of different fluids as a mobile phase for a liquid chromatography sample separation apparatus, includes a plurality of supply lines, a plurality of fluid pumps, and a combining point. Each of the supply lines is fluidically coupled to a respective one of a plurality of fluid component sources for providing a respective one of the fluids. Each of the fluid pumps is associated with a respective one of said supply lines. The fluids from the supply lines are to be merged at the combining point. Each of the fluid pumps conveys or does not convey a respective fluid from a respective one of the fluid component sources to the combining point, depending on a respective switching state of the fluid supply apparatus.

Abstract: A liquid pump device sucking and discharging liquid includes: a pump unit 50, rotating to make the liquid flow; a housing H, accommodating the pump unit and defining a passage 14 of the liquid; and a temperature sensor 80 having a tip region 80a protruded in the passage 14 of the liquid to measure a temperature of the liquid flowing on the passage 14.

Abstract: Snap-on getter pump assembly where a first part, a getter subassembly (10; 20; 30; 40), is firmly but reversibly coupled with a second part, holding the getter heater (50) and a closed cable module (57; 67), and such assembly of these two parts is easily installed through plugging and screwing into a support comprising a matching plug-and-socket type connection.

Abstract: A fluid end of a fluid pump may include a fluid end block with a bore in which a plunger is to reciprocate. The fluid end may include a valve cartridge, configured for insertion into and removal from the bore as a unit, including a valve cartridge housing having an open end, and a plurality of valves operably connected to the valve cartridge housing. The fluid end may include a packing cartridge, configured for insertion into and removal from the bore as a unit, including a packing cartridge housing having a plunger bore, to receive the plunger, that defines a first open end and a second open end of the packing cartridge housing. The valve cartridge housing and the packing cartridge housing are engaged such that the open end of the valve cartridge housing and the first open end of the packing cartridge housing overlap.

Abstract: Architectures and methods of operation for a pump for pumping two-phase magnetic fluids are described. The pump is capable of such pumping and may operate with no moving parts. Instead, the pump operates by selectively activating and deactivating each of a series of electrical circuits to control the presence or absence of magnetic fields applied to the two-phase magnetic fluid. The two-phase magnetic fluid may include liquid phase and gas phase, which may be in the form of bubbles. Though a presence of bubbles in a liquid may lead to cavitation and failure in some pumps, pumps for pumping two-phase magnetic fluids can avoid such a failure mechanism, in addition to avoiding another failure mechanism of wear and tear on moving parts.

Abstract: A pump actuator for use between a cam and a pump comprises a pump actuator body having a pad defined between a plunger facing surface and an opposite roller facing surface, where the plunger facing surface is recessed into the pump actuator body and offset from a radial end. The pump actuator body further comprises a cylindrical wall defined between the radial end and the plunger facing surface. A concave surface feature is formed on the pad on its plunger facing surface. The opposite roller facing surface of the pad is provided with a surface enhancing treatment comprising shot peening. These features, separately or in combination, provide mass-neutral improvements of the pump actuator body's fatigue life.

Abstract: A piston for a compressor has a first end subjectable to pressure and intended to be directed toward a first volume of the compressor, and a second end subjectable to pressure located opposite the first and intended to be directed toward a second volume of the compressor. The first and the second volume are interconnected via a connecting line. The first end is in the form of a full-surface-area full side. The second end is in the form of an annular, stepped side. On the second end, the piston carries a sealing arrangement, which seals the first volume with respect to the second. An annular seal body, in the form of a sealing sleeve, is retained in a pressure-tight manner, via a profile base, on the stepped side, between a step-side piston ring arranged on the second end and a compression-volume-side retaining ring.

Abstract: A pump assembly may include a bearing housing having a bore. The pump assembly may include a connecting rod connected to the bearing housing at a first end of the connecting rod and connected to a crosshead at a second end of the connecting rod via a wrist pin. The connecting rod may include a lubrication channel that extends within the connecting rod. The pump assembly may include a shell bearing in the bore of the bearing housing, the shell bearing having an inner surface and an outer surface. A portion of the inner surface of the shell bearing that contacts the crankshaft in a forward stroke of the crosshead may be uninterrupted by a groove or an aperture configured to direct lubrication fluid to the lubrication channel of the connecting rod.

Abstract: Bearing assemblies, apparatuses, systems, and methods include bearing assemblies having one or more bearing element in a bearing housing for supporting a shaft extending through at least a portion of the bearing housing. The bearing assembly including a recirculation line for delivering fluid into the bearing housing at a location separate from a fluid inlet of the bearing housing to at least partially thermally regulate, lubricate, and/or flush the one or more bearing elements during operation of the shaft.

Abstract: A compressor having a stationary part and a part oscillating along a main axis (X) as well as a leakage path (L) extending between the stationary part and the oscillating part in the axial direction, wherein multiple chambers, which are arranged axially in succession and extend annularly around the main axis (X), are defined between the stationary part and the oscillating part, wherein a seal, which closes or reduces the leakage path (L) is arranged in at least one chamber. The compressor has at least one bypass which fluidically interconnects two chambers.

Abstract: Compressed gas delivery systems and controllers. A multi-stage compressor system operation with series compressors is optimized by a controller by using inter-stage pressure as a control parameter for optimization to provide reduced power consumption. A multi-compressor system with parallel compressors is controlled using optimized operation parameters for each of several parallel compressors to provide reduced power consumption.

Abstract: Provided is a vacuum ejector pump that operates through high-speed compressed air. The ejector pump includes an external ‘C’-shaped clip for securely fixing a casing assembled to a nozzle body, an internal fastening groove and protrusion to prevent arbitrary rotation of the casing relative to the body, and a guide groove and protrusion to indicate the assembly orientation of the body and the casing. Additionally, a check valve that is organically coupled to the body is further included. Accordingly, when using the vacuum ejector pump, the entire structure may be maintained in a robust and stable manner. As a result, vacuum leakage may be minimized.

Abstract: A hydrostatic radial piston unit of the cam-lobe type of construction including a shaft defining a rotational axis of the hydrostatic radial piston unit. The shaft extends with a front end region from a non-rotary, stationary rear casing to a front casing. Within the front casing a cylinder block is housed and fixed in a torque-proof connection to the front end region of the shaft. In the cylinder block radially reciprocating working pistons are disposed in radially oriented cylinder bores to and from which cylinder bores hydraulic fluid can be conducted by means of a distributor. The distributor is arranged rotationally fixed with respect to the front casing and rotationally free relative to the shaft. A circumferential cam-lobe surface with which the working pistons can interact, is formed integrally with the front casing on its radial inner side.

Abstract: A fluid pump includes a housing, a motor that is disposed within a motor portion of the housing, a delivery pump element that is disposed within a delivery portion of the housing, and a return pump element that is disposed within a return portion of the housing. A drive shaft is coupled to each of the delivery pump element and the return pump element, and operation of the motor contemporaneously operates the delivery pump element and the return pump element via the drive shaft. The delivery pump element is configured to deliver fluid from a reservoir to a drive unit, and the return pump element is configured to deliver the fluid from a sump assembly of the drive unit to the reservoir.