A valve for a reciprocating pump includes a housing, a first chamber, a second chamber, a first valve element, and a second valve element. The housing includes an inlet and an outlet. The first and second chambers are within the housing. The first chamber includes a first valve seat and is fluidly connected to the inlet. The second chamber includes a second valve seat and is fluidly connected to the outlet. The first valve element is disposed in the first chamber and includes a spring-loaded check valve element. The second valve element is disposed in the second chamber and includes a buoyant material.

“The disclosure relates to a pump at least for conveying a fluid, comprising at least one conveyor device which has at least one conveyor chamber, at least one dimensionally stable conveyor chamber element that at least partly delimits the conveyor chamber, and at least one elastically deformable conveyor element that together with the conveyor chamber element delimits the conveyor chamber and is arranged on the conveyor chamber element; at least one drive unit for acting on the conveyor device; and at least one housing for receiving the conveyor device, wherein the housing is formed at least separately from the conveyor chamber element of the conveyor device, in particular from the conveyor device as a whole, in particular such that the conveyor chamber element, in particular the conveyor device, can be removed as a whole from the housing.”

A conveyor device is disclosed for at least conveying a fluid with at least one conveyor chamber, with at least one dimensionally stable conveyor chamber element that at least partially delimits the conveyor chamber, with at least one elastically deformable and, in particular, annular conveyor element, particularly a conveyor membrane, that delimits the conveyor chamber together with the conveyor chamber element and is arranged on the conveyor chamber element, and with at least one pressing unit intended for generating an inhomogeneous pressing force, particularly at least in a non-conveying state of the conveyor element, at least in a sealing region between the conveyor element and the conveyor chamber element along a maximum overall extent of the sealing region, particularly along a maximum circumferential extent between the conveyor element and the conveyor chamber element.

The disclosure relates to a conveyor device for at least conveying a fluid with at least one conveyor chamber, with at least one dimensionally stable conveyor chamber element that at least partially delimits the conveyor chamber and with at least one elastically deformable and, in particular, annular conveyor element, particularly a conveyor membrane, that delimits the conveyor chamber together with the conveyor chamber element and is arranged on the conveyor chamber element, wherein the conveyor element has at least one sealing extension that is designed integrally with a base body of the conveyor element and at least partially arranged in a sealing groove of the conveyor chamber element when the conveyor element is arranged on the conveyor chamber element.

A pump container includes: a container body in which contents are accommodated; a pump unit which is coupled to the top part of the container body and ejects the contents accommodated in the container body; a head part which is coupled to the top side of the pump unit and has a contents-moving hole that causes the contents delivered from the pump unit to move upward; a button part which is coupled to the top side of the head part, operates the pump unit according to a user's press, and has a nozzle formed on one side thereof for ejecting the contents, delivered via the contents-moving hole, to the outside; and a pressure-reducing check valve which is disposed between the pump unit and the contents-moving hole and opens or closes the contents-moving hole according to a press on the button part.

A conveyor device for conveying at least a fluid, comprises at least one conveyor chamber, at least one dimensionally stable conveyor chamber element formed separately from a housing in particular and at least partly delimits the conveyor chamber and at least one elastically deformable conveyor element, in particular a conveyor membrane, which together with the conveyor chamber element delimits the conveyor chamber and is arranged on the conveyor chamber element. The conveyor chamber element comprises at least one connecting piece for a fluid supply line adapter designed to differ from a tube, and/or at least one connecting piece, in particular an additional connecting piece, for a fluid discharge line adapter, which is designed to differ from a tube, said connecting piece/connecting pieces being arranged on a conveyor chamber element face facing away from the conveyor element, in particular on the exterior of the conveyor chamber element.

A pump includes a conduit defining an inner volume and formed from a flexible material, the conduit movable between an expanded state and a relaxed state. A coil is disposed within the conduit and includes an outer diameter that is approximately equal to an inner diameter of the conduit, the coil substantially maintaining its outer diameter when the conduit is moved between the relaxed state and the expanded state. A manifold is in fluid communication with the inner volume and is operable to permit fluid to enter the inner volume in a first mode and expel fluid from the inner volume in a second mode.

In many pump types, in particular in orbital pumps, there is an optimization need with regard to the running characteristics, in particular with regard to parameters which relate to the delivery flow. What is provided is an orbital pump device for delivering liquid medium by a rotational movement including a hydraulic housing surrounding a hydraulic chamber in a fluid-tight manner at least one membrane unit which is arranged inside the hydraulic chamber in flat contact with an inner jacket surface of the hydraulic housing; and an inlet and an outlet provided in the hydraulic housing. At least one crowning is provided at the inner jacket surface and/or at the membrane unit such that a radial gap between the membrane unit and the inner jacket surface is defined by the crowning in a circumferential section of less than 360°, and in particular less than 180°.

A water pump, including: a first housing, including a first cavity and further including a one-way water inlet and a one-way water outlet respectively in fluid communication with the first cavity; a flexible pumping part, having magnetism and elasticity, and being flexibly deformable, covering an outside of the first housing, and a second cavity is between the flexible pumping part and the first housing, a water permeable port configured to enable the first cavity and the second cavity to be in fluid communication is formed on the first housing; and a magnetic driving part, having magnetism, being configured to magnetically cooperate with the flexible pumping part to supply power to the flexible pumping part, the flexible pumping part deforms under the power to enable a fluid to conduct a pumping stroke and a suction stroke.

An exemplary embodiment of the present invention provided a pump for supplying a liquid. The pump includes: a flexible tube body including a pump chamber; a first flange provided at one end of the tube body; and a second flange provided at the other end of the tube body; and a driving unit for transmitting rotational force to the tube body to twist the tube body, in which the tube body has a bent portion bent at a predetermined angle.