258results about "Oscillating piston pumps" patented technology

A fluid energy transfer device, including a chamber for receiving a fluid, at least a portion of the chamber comprising a movable portion relative to another portion of the chamber, the movable portion being adapted to change the volume of the chamber from a first volume to a second volume by movement of the movable portion. The device further includes an actuator attached to the movable portion, wherein the displacements of the movable portion can be larger than the displacement of the actuator.

A fluid pump comprising a chamber which, in use, contains a fluid to be pumped, the chamber including a main cavity having a substantially cylindrical shape bounded by first and second end walls and a side wall and a secondary cavity extending radially outwards of the main cavity, one or more actuators which, in use, cause oscillatory motion of the first end wall in a direction substantially perpendicular to the plane of the first end wall, and whereby, in use, the axial oscillations of the end walls drive radial oscillations of the fluid pressure in the main cavity, and wherein the secondary cavity spaces the side wall from the first end wall such that the first end wall can move relative to the side wall when the actuator is activated.

A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). The piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The shaft (6), being connected to the piston (2), causes the piston to slide back and forth inside the cylinder chamber (3) while having a bidirectional angular movement. The instroke of the piston (2) sucks a fluid (15) from the inlet port (10) through a first channel (12) into the pump chamber (3), the fluid being propelled through a second channel (13) to the outlet port (11) during the outstroke of the piston (2). The inlet (10) and outlet port (11) are opened and closed alternatively by the bidirectional angular movement of the piston (2) which acts as a valve for the inlet and outlet ports (10, 11).

The present invention relates to an evacuation apparatus for evacuating a vacuum chamber of a substrate processing apparatus for processing a substrate such as a semiconductor wafer or liquid crystal panel. An evacuation apparatus according to the present invention includes a first vacuum pump connected to a vacuum chamber, and a second vacuum pump connected to the first vacuum pump. The first vacuum pump has a pair of multistage pump rotors.

This invention is rotating blade car type fluid power generator. The chain connects to three groups of rotating blade cars. Rotating blades are evenly distributed on circulate track. Two straight tracks and two half circular arc tracks are connected to form circulating track. Under the effect of fluid, rotating blade of rotating blade car is vertical to fluid flowing direction at the straight segment of track. Thus, fluid active force is strong. At another straight segment, under the effect of fluid, rotating blade of rotating blade car is parallel to fluid flowing direction. Thus, fluid active force is little. The three groups of rotating blade cars and rotating blades undertake circulating operation along track. The chain transfers power to power generator through driving train. The flow power driving train, which is applied underground, is composed of chain pump, pipe, accumulator and water turbine. It makes power generator can be assembled on water surface. The resistance type wind power machine is driven by chain.

The present invention refers to the arrangement of components comprised in a linear compressor (1), which is fundamentally composed by at least one resonant oscillating mechanism comprising at least one resonant spring (2) which defines at least one neutral point (21), at least one magnet (3) and at least one piston (4); at least one intermediate element (5) which defines an axially flexible surface (51); at least one flat spring (6) which defines at least one binding structure (62); at least one shell (7); and at least one attaching means (8).

An oscillating piston machine comprises a plurality of pistons which are arranged in a housing, rotate together in the housing about an axis of rotation which is essentially central in the housing and is fixed to the housing, and execute reciprocating oscillating movements about a respective oscillation axis as they rotate in the housing, in each case two adjacent pistons executing oscillating movements in opposite directions. The housing is of spherical construction on the inside, the oscillation axes of the pistons being formed by a common oscillation axis which run essentially through the center of the housing.

The invention discloses an anti-blocking power mechanism of a spherical compressor. A rotating plate synchronous power mechanism consisting of a power handle (10) and a track limiting surface (24) is arranged between a cylinder body (8) and a cylinder body seat (9), the power handle (10) is of a dumbbell structure with two symmetric ends, is fixed on a rotating plate shaft (203) and rotates along with a rotating plate (2), when the rotating plate (2) rotates to a position at which the axis of the rotating plate is overlapped with the axis of a piston, the rotating plate (2) is driven by the rotation of a main shaft (4), the rotating plate synchronous power mechanism can produce power enabling the rotating plate (2) to rotate continuously around the axis, so that a rotor continuously rotates and crosses a dead point; the rotating plate is provided with a backpressure support, so that the local imbalance pressure produced by a rotating plate spherical surface on the spherical surface of the cylinder body due to the working high pressure can be reduced, the mechanism can operate firmly and reliably, and the blocking problem of the rotor of the spherical compressor can be thoroughly solved.

A rotary spring-return actuator operator is provided with a multi-slot shaft and a clock type spring retained by a retaining band which encircles the spring in such a manner as to insure that the potential energy within the spring is safely contained during all operations requiring disassembly of the actuator assembly, and wherein the retaining band facilitates the in-field reversal of the spring direction or the adjustment of the spring preload by securing the spring to one or more of the slots on the multi-slot shaft.

A sucker rod pump with no travelling valve consisting of, from the bottom: hold down with pump inlet, lower standing valve, hollow coupling, upper standing valve suspended within the coupling, relief valve, hollow pump housing, solid piston within the housing, and barrel to clean and retain the piston in the housing. The piston attaches to and reciprocating with the rod string. Peripheral channels in the relief valve communicate between the coupling and the housing. A central channel in the relief valve communicates between the upper standing valve and the pump's outlets. The upstroke pulls fluid from the bottom of the well upward through the open lower standing valve, around the closed upper standing valve and into the housing chamber. The down stroke pushes fluid from the housing chamber past the closed lower standing valve and through the open upper standing valve to the pump's exit into the tubing.

Liquid pump comprising:

• • a cylinder (2);
  • an inlet valve (4) for feeding the liquid into the cylinder;
  • a discharge valve (5) for discharging the liquid out of the cylinder;
  • a piston (3) sliding in said cylinder so as to draw said liquid into said cylinder and to expel the same outside the cylinder;
  • an electric circuit (7) for heating the cylinder, with at least one resistor (70, 71) for electrically heating the liquid in the cylinder.

The resistor (70, 71) is made in the form of an electrically conducting thin track deposited on or in the wall (20) of the cylinder (2). The heating is initiated before the introduction of the liquid into the cylinder, and interrupted before the full discharge of the liquid out of the cylinder.

The invention relates to a butt clamp swing tray piston swing driver; the angular travel swing thereof is in a range of 0-330 degrees, or is continuous one-way rotation; the butt clamp swing tray piston swing driver is specifically suitable for such angular travel type valves as a ball valve, or replaces a motor to drive such revolving machines as a crusher, and is also suitable for pumping a fluid; and the fluid of a pressure feed piston of the driver driving a mechanical load to work or the fluid of mechanically driving a piston pressure feed load to work can be gas or liquid. The driver comprises a butt clamp swing tray piston swing actuation device, a fluid intake/drain channel system, a cooling system and a driving force generation system; a gas channel of the fluid intake/drain channel system is communicated with a working cavity; the cooling system is a forced cooling and/or natural cooling mechanism; the driving force generation system is a system of the fluid pressure driving the piston to act on the mechanical load or a system of mechanically driving the piston to act on the fluid load; and the butt clamp swing tray piston swing actuation device comprises trays of k not fewer than 3, a piston piece, a connecting mechanism, a power intake/discharge bonding structure, a lubricating system and a sealing structure.

A rotating compressor low in exhaust oil content comprises a shell, a crankshaft, an upper end cover, a guide rail, a lower end cover, a cylinder, a swing rotor and a motor. The crankshaft comprises a main shaft, an eccentric wheel and an auxiliary shaft. The eccentric wheel is sleeved with the swing rotor. A gas inlet hole is formed in the cylinder. The swing rotor is provided with an exhaust hole. An axial gas way is formed in the center of the main shaft. An axial oil way is formed in the center of the auxiliary shaft. An exhaust cavity and an oil return groove are formed in the eccentric wheel. The exhaust cavity communicates with the axial gas way. One end of the oil return groove communicates with the exhaust cavity. The other end of the oil return groove communicates with an upper oil cavity jointly formed by the upper end cover, the swing rotor and the crankshaft. According to the compressor, compressed gas enters the exhaust cavity through the exhaust hole, and oil and gas separation is performed under the effect of the centrifugal force. Separated lubricating oil returns to an oil pond in the shell, and separated gas enters the shell through the axial gas way and then is discharged. The compressor is high in system energy efficiency and good in reliability and speed changing characteristic.

A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. A motor is disposed within the housing and operably connected to a drive shaft for driving one of the scroll compressor bodies. The drive shaft is rotationally supported at one end by a crankcase which includes a bearing housing and a bearing. The crankcase includes a plurality of openings or gas passages passing through the crankcase, as well as a plurality of generally cylindrical sections positioned respectively between adjacent openings. The cylindrical sections define contact regions which can engage an inner periphery of the housing when the crankcase is mounted therein.

The invention relates to a tray piston type swing driving mechanism capable of mechanically driving a piston to act on a fluid load. The angular stroke swing range of the machine is from 0 degree to 330 degrees or continuous rotate in a single-way manner, and the machine is particularly suitable for pumping fluid. The fluid of the driving machine pressure feeding piston driving machine load work or the fluid of mechanical driving piston pressure feeding load work can be gas or liquid. The driving machine comprises a tray piston type swing execution device, a fluid inlet and draining channel system, a cooling system and a driving force generation system. The fluid inlet and exhaust channel system comprises a fluid channel, a pipe opening and a valve, and the fluid channel is communicated with a working cavity; the cooling system carries out forced cooling and/or natural heat dissipation on an element of the driving machine; the driving force generation system is a system capable of enabling the mechanical driving piston to act on the fluid load; and the tray piston type swing execution device comprises two trays, a piston piece, a connecting mechanism, a power inlet and outlet bonding structure, a lubricating system and a sealing structure.