Abstract: An axial flow pump comprises a housing having a bore, a cylindrical permanent magnet within the housing bore, and at least one impeller inside the permanent magnet and adapted to cause fluid to flow within the cylindrical permanent magnet. The permanent magnet is configured to rotate in the bore around its longitudinal axis. A motor lamination stack surrounds the cylindrical permanent magnet. The motor lamination stack is formed substantially as a cuboid, extending in a width and height direction perpendicular to the axis of rotation of the cylindrical permanent magnet. The diameter of the bore is at least 80% of the dimension of the cuboid in the height direction. A coil of the motor lamination is configured to be energized and to create a rotating magnetic field in the lamination stack to rotate the cylindrical permanent magnet around its longitudinal axis. The coil is disposed to one or both sides of the pump.

Abstract: A fluid end assembly comprising: a housing, valves, seals, seats, springs, plungers, plunger packing, and other associated parts, paired with a suction manifold that facilitates fluid feeding through a centrally located external suction intake. The suction manifold of this invention is designed to preserve fluid energy that will ensure complete filling of the cylinder in extreme pumping conditions. The suction manifold utilizes a chamber design positioned immediately below the suction valves, eliminating all connecting ducts. The design of the manifold of this invention can be easily fabricated utilizing commercially available steel plate, pipe, and pipe fittings.

Abstract: A pump for circulating water includes an upper housing 10 formed with an inlet 11 and an outlet 12 of fluid; a lower housing 20 arranged in a lower side of the upper housing 10, having a space formed therein; an inner housing 30 having an edge part interposed between the upper housing 10 and the lower housing 20, and an impeller receiving space 31 formed in a middle part; an impeller 50 received inside the upper housing 10 and in the impeller receiving space 31 to be rotatably installed; a rotor 60 installed inside an outer circumference of the impeller 50; a spring 65 installed between a lower surface of the impeller and the inner housing; and a stator 70 installed inside the lower housing 20.

Abstract: A compressor may include first and second compression members, first and second bearing assemblies, a sensor, and processing circuitry. The second compression member cooperates with the first compression member to define a compression pocket. The first and second bearing assemblies rotatably support the first and second compression members, respectively. The first bearing assembly may include a bearing rotor and a bearing stator. The bearing stator may surround the bearing rotor and may include poles each having a winding. The sensor may measure a radial position of the bearing rotor relative to the bearing stator. The processing circuitry may be in communication with the sensor and may control electrical current supplied to the windings based on the radial position measured by the sensor to adjust the radial position of the bearing rotor relative to the bearing stator.

Abstract: A submersible pump assembly for transference of a fluid medium with low viscosity is disclosed. In one embodiment, the submersible pump assembly includes a cylinder block having cylinders and pistons. A drive shaft is rotatably supported in the cylinder block and coupled to a drive unit. An inclined leading plate is coupled to the pistons and the drive shaft such that the pistons are configured to be axially driven in a reciprocating motion within the cylinders upon rotation of the inclined leading plate. A suction chamber and a pressure chamber are each located in fluid communication with the cylinders. In one operational mode, the fluid medium is transferred from the suction chamber to the pressure chamber during the reciprocating motion of the pistons, when the pistons are active. In another operational mode, the fluid medium is circulated through the suction chamber.

Abstract: A detachable submersible pump with a modular design includes a motor module and a pump chamber module. The motor module includes an upper cover, a motor, a motor cover, and an impeller. The pump chamber module includes a housing, a water outlet, a connecting pipe, and a lock nut. The water outlet is arranged on one side of the housing. The lock nut is sleeved on the connecting pipe and is connected to the water outlet by threads. Each of two sides of the upper cover is provided with a pressable elastic buckle. Each of two sides of the housing is provided with a clamping hole. The impeller is placed inside the housing.

Abstract: A pump comprising a side wall closed at each end by an end wall forming a cavity for, in use, containing a fluid, one or more actuators each operatively associated with one or more of the end walls to cause an oscillatory motion of the associated end wall(s) whereby, in use, these axial oscillations of the end wall(s) drive substantially radial oscillations of the fluid pressure in the cavity, two or more apertures in the cavity, a valve disposed in at least one of the apertures, wherein the actuator(s) is arranged to be non-axisymmetric in use such that, in use, a pressure oscillation with at least one nodal diameter is generated within the cavity.

Abstract: The present invention discloses a continuous high-power turbine fracturing equipment, including a turbine engine, a reduction gearbox, a and a plunger pump, the turbine engine is arranged coaxially with the reduction gearbox, the reduction gearbox is connected to the plunger pump through the transmission shaft, the angle between a central line of the reduction gearbox and the transmission shaft is between 2° and 4°.

Abstract: Provided herein are passive microfluidic pumps. The pumps can comprise a fluid inlet, an absorbent region, a resistive region fluidly connecting the fluid inlet and the absorbent region, and an evaporation barrier enclosing the resistive region, the absorbent region, or a combination thereof. The resistive region can comprise a first porous medium, and a fluidly non-conducting boundary defining a path for fluid flow through the first porous medium from the fluid inlet to the absorbent region. The absorbent region can comprise a fluidly non-conducting boundary defining a volume of a second porous medium sized to absorb a predetermined volume of fluid imbibed from the resistive region. The resistive region and the absorbent region can be configured to establish a capillary-driven fluid front advancing from the fluid inlet through the resistive region to the absorbent region when the fluid inlet is contacted with fluid.

Abstract: An inlet baffle chamber (40) is provided in the port cover (26) of a piston pump. The inlet baffle chamber (26) fluidly connects a compressed piston chamber to an adjacent lower pressure piston chamber while the lower pressure piston chamber is in the suction cycle and separately receiving fluid from an inlet manifold (38) of the port cover (26). Instead of de-compressing high pressure fluid directly to pump's inlet (36) as in prior art pumps, the inlet baffle chamber (40) directs fluid to the next piston that is already in the suction cycle.

Abstract: A compressor includes: a case, a piston, an elastic member, and a drive. The piston in the case moves along an axis direction. The elastic member in the case applies a force to the piston to move the piston in the axis direction toward a first side of the case. The drive causes the piston to move in the axis direction toward a second side of the case. The piston includes a rack extending in the axis direction. The drive includes: a motor, and a pinion that rotates in accordance with the motor, and that is engaged with the rack. The pinion includes: first and second toothed regions each having a pinion tooth; and first and second flat regions having no pinion tooth. A number of the pinion teeth formed on the first toothed region is greater than a number of the pinion teeth formed on the second toothed region.

Abstract: A gas turbine engine and a blisk are disclosed, including methods of making the same. The blisk may include a disk, spars of airfoils, platforms, and shanks of the airfoils integrally formed as a unit. Such blisk features may be integrally formed by a casting process or additive manufacturing. The blisk includes cooled airfoils, such that the spar includes standoffs, and a cover panel is bonded to an outer surface of the standoffs to define passages between the cover panel and the spar. Cooling air is fed through an inlet port formed in a base standoff to the passages of the spar through a cooling feed channel defined in the disk or shank portion.

Abstract: An inflation pump and operating method and usage thereof relate to the technical field of inflation devices. The inflation pump includes a housing, a control mechanism and an inflation mechanism. Both the control mechanism and inflation mechanism are provided within the housing. The control mechanism includes a pressure sensor and a control circuit board. The pressure sensor communicates with the control circuit board via signals. The control circuit board communicates with the inflation mechanism via signals. The pressure sensor is communicated with outside of the housing through a first air pipe. The inflation mechanism is communicated with outside of the housing through an air inlet provided on the housing.

Abstract: A refrigerant compressor includes a hermetically sealed housing and includes a drive unit; wherein the drive unit is arranged in the interior of the housing and is attached, by way of at least one spring element, to at least one mounting region of the housing with mounting action; wherein a first mounting element and a second mounting element are provided; wherein one of the two mounting elements is connected to the drive unit and the other of the two mounting elements is connected to the mounting region. The first mounting element is of sleeve-like form and has an inner wall, and the second mounting element has a bolt-like section, wherein the bolt-like section is received at least in sections in the first mounting element, whereby an overlap region is formed, in which overlap region a gap is formed between the bolt-like section of the second mounting element and the inner wall of the first mounting element.

Abstract: A pump for use with a tube, having a rotor having an axis of rotation and a plurality of rollers configured to define an orbital path about the axis of rotation, the orbital path defined by a radius, and a roller bed having a surface adapted to support the tube for peristaltic compression by one or more rollers, wherein the surface has a predetermined profile comprising a circular arc segment and at least one side segment, the arc segment having a first curvature defined by the radius, and the at least one side segment having a second curvature lesser than the first curvature.

Abstract: An air-bag type inflating device includes an elastic bag body and a sealing member; the sealing member has a first membrane, a second membrane and a third membrane, the second membrane is connected to the first membrane, the third membrane is stacked and arranged at a connecting location of the first membrane and the second membrane and disposed at an inner side of the first membrane; a unidirectional nozzle passage is formed between the first membrane and the third membrane, and capable of being optionally operated for opening or closing the first chamber and the second chamber. Accordingly, an opening/closing status of the unidirectional nozzle passage can be stably and precisely controlled after the bag body is pressed.

Abstract: A gas transportation device includes a gas outlet cover, plural flow-guiding pedestals and plural gas pumps. The gas outlet cover includes a gas outlet nozzle and a gas outlet cavity. The gas outlet nozzle and the gas outlet cavity are in communication with each other. Each flow-guiding pedestal includes a main plate, a protruding frame and a chamber frame. The main plate includes a recess and a communicating aperture in communication with the recess. The gas pumps are disposed inside the chamber frames of the flow-guiding pedestals, respectively. The gas outlet cover covers the flow-guiding pedestals and is connected to the protruding frames, whereby plural convergence chambers are defined and are in communication with the gas outlet cavity. Consequently, the gas is transported through the recesses, the communicating apertures, the convergence chambers and the gas outlet cavity sequentially, and finally is discharged out from the gas outlet nozzle.

Abstract: A multifunctional air pump is disclosed including an air pump assembly, a control module, and a remote user input for inflating and deflating an inflatable product. The air pump may be operated remotely for convenience. The air pump may also operate automatically to maintain the pressure of the inflatable product.

Abstract: Embodiments relate to a high-pressure fuel pump having a pump piston which, during operation, moves in translation between a pressure chamber and a leakage chamber. The leakage chamber has a leakage collecting region and an equalizing region. A low-pressure damper having a bellows-shaped corrugated damper plate is arranged in the equalizing region.

Abstract: A diaphragm pump, in particular for use as a detergent dosage pump, comprises a pump head, a fluid chamber adjacent to the pump head, a diaphragm defining a wall of the fluid chamber and reciprocatingly movable, at least a suction check valve and a dosing check valve, a control unit, and a detector unit for detecting a fluid inside the fluid chamber. The diaphragm pump according to the invention offers increased process reliability.