1520 results about "Pump chamber" patented technology

An embodiment of a fluid end of a pump includes a housing including a plurality of pumping chambers. Each pumping chamber configured to receive a plunger therein. In addition, the housing includes a plurality of outlet ports, each being in fluid communication with a corresponding one of the plurality of pumping chambers. The fluid end also includes a discharge manifold assembly connected to the housing and positioned to receive fluid discharged from the plurality of pumping chambers. The discharge manifold assembly including a single-piece, monolithic body having a plurality of discharge bores and a manifold bore defined therein, the manifold bore being in fluid communication with the plurality of discharge bores, the plurality of discharge bores positioned to align with the plurality of outlet ports, and each of the plurality of discharge bores being configured to at least partially receive a corresponding discharge valve assembly therein.

A vacuum pump for generating a negative pressure includes a pump housing having a pump chamber with a rotor and a motor for driving the rotor with a drive shaft rotatable about a longitudinal axis, a first and a second inlet line. The second inlet line leads through the pump housing into the pump chamber. A first outlet line leads from the pump chamber through the pump housing. The pump has a first outlet valve and a second outlet line connected to the pump housing. A connecting part is attached to a connecting surface running circumferentially to the longitudinal axis, and the outlet valve with the second outlet line is formed in the connecting part. The connecting part further has the first inlet line, with a first connecting opening formed in the connecting part housing, via which the first inlet line is connected to the second inlet line.

A pet water dispenser includes a water tank for storing liquid, an upper cover installed above water tank and having a sink and a water leakage opening communicating with water tank in surface, a water pump extending into or onto upper cover from lower part of water tank and having a water supply opening in surface above upper cover; water pump includes a first accommodating chamber internally having a motor which drives pump blades below first accommodating chamber to rotate through a rotating shaft, second accommodating chambers of which walls define a pump chamber with downwards-extended wall of first accommodating chamber; a centrifugal water pump formed by pump blades in pump chamber and matched motor and including a water inlet communicating with water tank, and a water discharging opening; a water supply channel formed by second accommodating chambers sequentially communicating with water discharging opening and water supply opening.

A vacuum pump, which is connectable to an external system and configured to evacuate material from the external system, includes a main housing defining a motor housing, a pump housing, and a partition wall that separates the motor housing and the pump housing. The pump housing is sealed relative to the motor housing to form a compression chamber that holds a lubrication fluid. The vacuum pump further includes a motor assembly that is positioned within the motor housing and a pump assembly that is positioned within the compression chamber. The pump assembly is driven by the motor assembly and is in fluid communication with the compression chamber. The pump assembly includes a pump chamber, a rotor having vanes that is driven within the pump chamber, and a seal that is in sliding contact with the rotor. The seal is moveable relative to the rotor.

An exemplary pump (10) is operative to reduce the size of solids suspended in liquid that enters the interior area of the pump. The pump includes a motor (28) that is operative to drive an impeller (56) that is located in a pump chamber (42). The motor is also operative to drive a slicer (80) that includes at least one slicer blade edge (96). The slicer blade edges move in immediately adjacent outwardly overlying relation of a slicer plate (66) which includes a plurality of slicer plate fluid openings (78). Solids suspended in liquid that extend in the slicer plate fluid openings are sliced between the slicer blade edges and the facing peripheral shearing edges of the slicer plate fluid openings so that the solids are reduced to a size that can pass through the pump.

The utility model discloses an oral cavity cleaning device and an oral cavity cleaner.The oral cavity cleaning device comprises a machine shell, a motor, a pump mechanism and a support assembly; the motor, the pump mechanism and the support assembly are all arranged in an inner cavity of the machine shell, an output shaft of the motor is provided with a first flow channel penetrating through the output shaft, and the support assembly is connected with the inner shell wall of the machine shell. The pump mechanism comprises a liquid inlet end, a liquid outlet end and a power end, and the pump mechanism can enable liquid to be pumped into a pump cavity of the pump mechanism from the liquid inlet end and pumped out from the liquid outlet end; wherein the liquid outlet end is integrated on the support assembly, and the support assembly is provided with a second flow channel communicated with the liquid outlet end and the first flow channel. The oral cavity cleaning device and the oral cavity cleaner have the advantages of avoiding resonance, reducing noise and improving connection stability.

The invention is concerned with the dispenser (1) for dispensing a fluid (F), with a pump device which has a pump chamber (2), an inlet valve and an outlet valve (3, 4) and a pump piston (5) with a longitudinal axis (x), wherein a fluid pressure is generated during a pumping process for dispensing fluid (F) and the outlet valve (4) has a sealing position in which it rests sealingly against the pump piston (5). In order to provide a dispenser (1) advantageously designed, it is proposed that the outlet valve (4) can be moved relative to the pump piston (5) while maintaining the sealing position and can be deformed by the fluid pressure in a radial direction relative to the longitudinal axis (x) for the passage of fluid (F).

Aspect of the disclosure provides a method of pumping a liquid material. The method may include pumping the liquid material by rotating an impeller attached to a shaft assembly. The pump includes the impeller, the shaft assembly, and a pump chamber. The method includes controlling the minimum pressure of the liquid material in the pump chamber to be above a threshold pressure by controlling a pressure of a gas that is supplied to the pump chamber. The shaft assembly includes a first shaft and a second shaft that are separated by a gap and are physically coupled by a coupling component.

A vacuum pumping system includes a vacuum pump and a motor for driving the vacuum pump. A motor stator and a motor rotor are received in a pumping chamber of the vacuum pump. Thanks to such arrangement, the vacuum pumping can be made as a single, sealed unit and the need for dynamic seals can be avoided. Moreover, the vacuum pumping system can be more compact and lighter than prior vacuum pumping systems. A pump rotor of the vacuum pump may be at least partially made as a hollow body, and the motor may be received inside the pump rotor.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

A pumping system, comprising: a pump fluid end comprising a plurality of pump chambers, each pump chamber comprising a bore having a reciprocatable plunger disposed therein, a suction valve, and a discharge valve; a prime mover mechanically coupled to the fluid end [by a drivetrain] and configured to reciprocate the plungers; and a controller communicatively coupled to the prime mover, the fluid end, or both and configured to alert a user re a pump malfunction, initiate corrective action of the pump malfunction, or both in response to: (a) an indication of torque reversal during operation of the pumping system, (b) an indication of negative flow rate from the pump during operation of the pumping system, (c) an indication of leakage of (i) a single discharge valve in a 3-plunger pump or (ii) discharge valves associated with two plungers in adjacent firing order, or (d) any combination of (a)-(c).

A novel embodiment of a pump system, for example, of the type that would be used in a wearable drug delivery system, comprises dual linear-actuated plungers disposed in a pump chamber. The plungers are coupled to a leadscrew having both left-hand and right-hand threads such that rotation of leadscrew in a first direction moves the plungers together and rotation of leadscrew in a second, opposite direction moves the plungers apart. Movement of the plungers away from each other draws one or more doses of a liquid drug from a reservoir into the pump chamber, while movement of the plungers together forces liquid drug to a patient interface for delivery to the patient.

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and / or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

The invention provides an electric engine, an electric propulsion device and an aircraft, and relates to the technical field of aircrafts. The electric engine comprises a power motor which comprises a motor rear cover, and the motor rear cover is provided with a liquid inlet flow channel and a liquid supply flow channel; the liquid pump comprises a pump body and a pump rotor, the pump body is fixedly connected with the motor rear cover, a pump cavity of the liquid pump is formed between the pump body and the motor rear cover, the pump body forms part of the cavity wall of the pump cavity, and the pump cavity is communicated with the outlet end of the liquid inlet flow channel and the inlet end of the liquid supply flow channel; the pump rotor is arranged in the pump cavity and used for enabling cooling liquid in the liquid inlet flow channel to flow into the liquid supply flow channel through the pump cavity. Thus, the weight of the electric engine can be reduced, and the weight of the electric engine can be reduced.

The invention relates to a device for dispensing a liquid from a container, comprising an inlet channel configured to be brought in fluid communication with the container, a pump in fluid communication with the inlet channel, the pump including a pump chamber and a piston reciprocally movable in the pump chamber, and an inlet valve arranged between the inlet channel and the pump. The liquid dispensing device further comprises a buffer in fluid communication with the pump, a nozzle for dispensing the liquid, the nozzle in fluid communication with the pump and / or the buffer, and an outlet valve arranged between the pump and / or buffer and the nozzle. The buffer comprises an elastic buffer bag arranged at least partially in the piston. The elastic buffer bag defines an internal volume and has an opening in fluid communication with the pump.

What is suggested is a micromembrane pumping device for pumping a fluid, having: a pump chamber to which an inlet valve, an outlet valve, and a membrane device for varying a volume of the pump chamber are associated, wherein the membrane device has a plate-shaped actuator for deforming the membrane device; and influencing means for influencing the plate-shaped actuator and the volume of the pump chamber; wherein the membrane device has a plate-shaped membrane body limiting the pump chamber; wherein the plate-shaped actuator is arranged on a side of the plate-shaped membrane body facing away from the pump chamber; wherein the plate-shaped actuator is mounted to and electrically insulated from the plate-shaped membrane body by an electrically insulating glue layer; wherein at least one embedded portion of a support body at or in which a deformation sensor for detecting a deformation of the membrane device is arranged, is arranged within the glue layer to detect the volume of the pump chamber; wherein the influencing means, the plate-shaped actuator and the deformation sensor form a closed-loop control circuit for regulating a volume flow.

The invention relates to the technical field of self-sucking pumps, in particular to an efficient vacuum energy-saving self-sucking pump which comprises a base, a first pump cavity, a motor, a rain baffle, a first impeller, a compensation assembly and a drainage assembly, the first pump cavity, the motor and the rain baffle are sequentially installed at the upper end of the base, and the first impeller is installed at the axis position in the first pump cavity; the drainage assembly is installed at the lower end of the first impeller, and the two compensation assemblies are installed in the drainage assembly. After the drainage assembly is started, the drainage assembly is used for guiding the liquid level to overflow the first impeller and removing large-particle solids in fluid, and the compensation assembly drives the first impeller to move downwards to reduce the gap when detecting that the gap between the first impeller and the inner wall of the first pump cavity is enlarged. The tip end of the blade is easily and continuously washed by solid particles, so that the flow and lift of the core pump are reduced, and the efficiency is obviously reduced.

A water environmental DNA collection apparatus, including a lower box body and collection components, where a clear water chamber, a motor chamber, a water pump chamber and a power supply chamber are provided in the lower box body, a motor is provided in the motor chamber, a water pump is provided in the water pump chamber, the lower box body is fixedly connected with a first filtering mechanism, the water pump communicates with the first filtering mechanism, a support column is fixedly connected outside the lower box body, and a turntable is fixedly connected with the support column; and a plurality of groups of collection components are provided, each collection component includes a press filter, a cylinder and a bottom shell, a transverse plate is fixedly connected inside the cylinder, the cylinder is divided into a filter pressing chamber and a filtering chamber through the transverse plate.

The invention relates to a device for dispensing a liquid from a container, comprising: - an inlet channel configured to be brought in fluid communication with the container; - a pump in fluid communication with the inlet channel, the pump including a pump chamber and a piston reciprocally movable in the pump chamber; - an inlet valve arranged between the inlet channel and the pump; - a buffer in fluid communication with the pump; - a nozzle for dispensing the liquid, the nozzle in fluid communication with the pump and / or the buffer; - an outlet valve arranged between the pump and / or buffer and the nozzle; and - means for connecting the dispensing device to the container; wherein the buffer comprises an elastic buffer bag defining an expansible volume and extending at least partially past the connecting means towards an interior of the container. The invention further relates to a system for dispensing a liquid, comprising a container and a liquid dispensing device as described above connected thereto.

A pump for dispensing a fluid, has a pump head, a piston body with a piston, a pump chamber limited by a pump chamber body, an inlet valve and an outlet valve, the piston being moveable by respective movement of the pump head between an upper starting position and a lower end position. A return stroke force for a return stroke from the lower end position into the upper starting position is provided by a bellows, formed by two bellows arranged one above the other, Each of the bellows is folded up, when moving the pump head into the lower end position, by exerting a compression force on the pump head, the first bellows receiving the compression force by direct engagement with the pump head, the second bellows receiving the compression force only by engagement with the first bellows.

A parallel type multi-shaft roots vacuum pump comprises a motor, a pump body with N pump cavities connected in parallel, 2N fan blade rotors, 2N fan blade transmission gears, N-1 pairs of carrier gears and other parts, wherein N is an integer and is larger than or equal to 2, and the 2N fan blade rotors comprise a driving fan blade and 2N-1 driven fan blades. The parallel type multi-shaft roots vacuum pump is provided with N pump cavities connected in parallel, 2N fan blade rotors are installed in the pump cavities in parallel, a pair of fan blade rotors is arranged in each pump cavity to form N air suction and exhaust units, and the N pump cavities connected in parallel share an air suction port and an air exhaust port. The fan blade transmission gear is arranged at the other end of the motor, and the driving fan blade shaft is directly connected with the motor through a coupler. The parallel type multi-shaft roots vacuum pump is novel in structure, symmetrical and compact, smooth in air flow and large in air suction amount, and is perfectly presented in a unique and exquisite single-pump form. The technical scheme of the parallel type multi-shaft roots vacuum pump can be expanded and extended to the design of a screw vacuum pump.

The invention discloses dispersing equipment. The dispersing equipment comprises a dispersing part and a driving part, the dispersing component comprises a rotating shaft, a dispersing machine and a centrifugal pump. The dispersion machine comprises a dispersion main body and a screen cylinder. And the dispersing main body is provided with a dispersing cavity for accommodating the screen barrel. The centrifugal pump comprises a pump shell and an impeller. The rotating shaft is sequentially and fixedly connected to the screen barrel and the impeller. The pump shell is provided with a pump cavity, a feeding port and a discharging port. The impeller is arranged in the pump cavity. The discharge hole is formed in the end part, far away from the dispersion machine, of the pump shell. The pump shell is provided with a side flow channel. And a discharge port is formed in the discharge end of the side runner. And the feeding end of the side runner and the feeding hole are oppositely arranged in the axial direction of the rotating shaft. And the feed port, the pump cavity, the side runner, the discharge port and the dispersion cavity are sequentially communicated and form a slurry runner. And the driving part is fixedly connected with the rotating shaft and is used for driving the rotating shaft to drive the screen barrel and the impeller to rotate, so that the control difficulty of the material retention time and the shearing strength is reduced, the consistency of material characteristics is improved, and the material dispersion quality is improved.

A pump device includes a motor having a rotor and a stator, and an impeller which is disposed in a pump chamber and is integrally rotated with the rotor. The rotor includes a rotor member having a first cylindrical part and a drive magnet surrounding the first cylindrical part. A radial bearing is held on an inner side of the first cylindrical part. The drive magnet has a second cylindrical part surrounding an outer periphery of the first cylindrical part and a ring-shaped rib which protrudes from an end of the second cylindrical part to an inner side. The rotor member has a seat part, which protrudes from the first cylindrical part to an outer side and supports an end of the second cylindrical part, and a caulked part which is enlarged from the first cylindrical part to an outer side and is overlapped with the ring-shaped rib.

An arrangement for at least one cooling circuit of a motor vehicle, wherein the arrangement has a pump that has a housing. A motor with a stator and a rotor are arranged in the housing of the pump. A pump chamber is provided in the housing and in which an impeller of the pump is arranged such that it can rotate and be driven by the motor. The impeller conveys the medium to be conveyed by the pump. The arrangement has a tank and / or a distributor device, and wherein at least a first part of the housing is formed in a part of the tank or of the distributor device of the arrangement.

A piston pump for a high-pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers into each of which a reciprocally movable piston dips and which are each in flow connection with the suction conduit by way of an inlet channel and with the pressure conduit by way of an outlet channel. The inlet channel can be closed by an inlet valve and the outlet channel can be closed by an outlet valve. The second housing part includes a valve receptacle, and that the piston pump includes an outlet valve assembly, wherein the outlet valve assembly comprises an outlet part, which is inserted into the valve receptacle and forms all outlet valve seats.

The invention relates to a device for dispensing a liquid from a container, comprising: - an inlet channel configured to be brought in fluid communication with the container; - a pump in fluid communication with the inlet channel, the pump including a pump chamber and a piston reciprocally movable in the pump chamber; - an inlet valve arranged between the inlet channel and the pump; - a buffer facing the pump and in fluid communication therewith; - a nozzle for dispensing the liquid, the nozzle in fluid communication with the pump and / or the buffer; and - an outlet valve arranged between the pump and / or buffer and the nozzle; wherein the buffer comprises an elastic buffer bag defining an expansible volume and extending at least substantially in alignment with the pump chamber. The invention further relates to a system for dispensing a liquid, comprising a container and a liquid dispensing device as described above connected thereto.

A pump system includes a housing, a lubricant system, and control circuitry. The housing includes a pump chamber defined by the housing and a throat seal. The lubricant system includes a lubricant pump, a lubricant gallery defined within the housing of the main pump, and a lubricant circuit fluidly connecting the lubricant pump and the lubricant gallery. The throat seal is disposed adjacent to and between the pump chamber and the lubricant gallery. The control circuitry is configured to cause the lubricant pump to pump a purge volume of lubricant through the lubricant system, cause the lubricant pump to stop pumping for a first time period after the lubricant pump has pumped the purge volume, and cause the lubricant pump to pump the purge volume of lubricant through the lubricant system after the first time period.

A diaphragm pump, which comprises a pump body which defines internally at least one pair of pumping chambers which are connected, at the inlet, to at least one suction connector and, at the outlet, to at least one delivery connector of the pump; pumping chambers are delimited by respective diaphragms, which separate the pumping chambers from actuation chambers, which can be connected, alternately, to a source of compressed air; in the pump body an access opening to the pilot chamber is defined which is closeable by means of a closure element; the closure element comprises a main body made by molding and of plastic material and at least one plate-like element made of a material having, with respect to the sliding pad, a higher resistance to wear and a lower coefficient of friction than the plastic material.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.