Abstract: Multiple diaphragm pumps are known in the art that are operated by compressed air and in which the valves are controlled by a slide element. The slide element is magnetically actuated without mechanical engagement involved in the actuation. This has the consequence that only a small amount of force can be applied which may not be sufficient due to static friction of the valve seal. The invention presents a hybrid solution which facilitates a mechanical actuation of a valve piston provided for valve control as well as a magnetic overcoming of a dead center that may be reached by the valve piston and the diaphragm piston that actuates the diaphragms of the multiple diaphragm pump.

Abstract: A pump arrangement for a drum or container pump, the pump arrangement including a pump housing; a drive shaft support tube received in the pump housing; and a drive shaft rotatably supported in the drive shaft support tube at a rotor side bearing and at a pump arrangement coupling, wherein the drive shaft runs freely between the rotor side bearing and the pump arrangement coupling, wherein the drive shaft runs through the at least one support ring that is fixed relative to the pump housing and that has an inner diameter that is greater than an outer diameter of the drive shaft and that is arranged between the rotor side bearing and the pump arrangement coupling.

Abstract: For a reliable determination of through flow, it is currently necessary to work with external measurement devices in the case of flow machines. In particular, in contrast to displacer machines, there is no dependence of the through flow on the speed of rotation. In order to be able to do without an external measurement device, the present invention goes back to the use of pressure sensors, which, in combination with the collection of additional data of the motor or of the conveyed medium, allow a determination of the through flow.

Abstract: A device for sensing the pressure of a medium within a fluid medium received in a container includes a pressure sensor associated with a screen or joined thereto. The screen shields the pressure sensor at least on one side from swirls formed in the medium, for example during filling or emptying of the container. The pressure sensor communicates with an external data-processing unit for evaluation of sensor data and the screen is joined to a pump lance of a container pump in the region of a pump foot and together therewith forms a measuring chamber, in which the pressure sensor is received. The pressure sensor is thereby decoupled by the screen from influences of dynamic pressure and is placed in the container in such a way that it is able to sense the pressure on the spot, but without interfering flow conditions.

Abstract: A device for sensing the pressure of a medium within a fluid medium received in a container includes a pressure sensor associated with a screen or joined thereto. The screen shields the pressure sensor at least on one side from swirls formed in the medium, for example during filling or emptying of the container. The pressure sensor communicates with an external data-processing unit for evaluation of sensor data and the screen is joined to a pump lance of a container pump in the region of a pump foot and together therewith forms a measuring chamber, in which the pressure sensor is received. The pressure sensor is thereby decoupled by the screen from influences of dynamic pressure and is placed in the container in such a way that it is able to sense the pressure on the spot, but without interfering flow conditions.

Abstract: Many conveying units for media capable of flow are used for products that are harmful to the environment and at least attack the conveying units themselves over time or deposit in them and clog them. Cleaning of the conveying units is therefore recommended, but such cleaning represents an effort that is preferably not made, because of the effort involved. Against this background, an apparatus for cleaning of conveying units, which apparatus can run both in simple manner and practically without supervision, uses a cleaning circuit in which the conveying unit to be cleaned is short-circuited with a cleaning agent tank and thereby constant circulation of cleaning agent through the conveying unit to be cleaned is pumped and the unit is thereby cleaned.

Abstract: The invention relates to a container system comprising a container with an integrated pump mechanism of a submersible pump, particularly a drum pump or a container pump with a pump lance. This pump lance can be inserted into the container via a bunghole, and a rotor shaft, which has a pump rotor mounted thereon in a rotationally fixed manner and which is actively connected to a drive motor, extends through the pump lance. By virtue of the fact that the submersible pump has a pump head and a pump mechanism, which are designed so that they can be separated from one another, and a withdrawal connection is assigned to the pump head that can be removed from the pump mechanism, the invention ensures that the container, which is advantageously provided with a bunghole that is drawn deeper or is otherwise situated lower, forms, together with the pump mechanism integrated in the container, a stackable and transportable unit that can be sealed tightly. The invention is for use in SCR technology or AdBlue® technology.

Abstract: The invention relates to a dosing pump comprising a chamber, an inlet valve located in an inlet pertaining to said chamber, and an outlet valve located in an outlet pertaining to said chamber. The chamber is divided into two partial chambers (2, 18) by a separating means. Said separating means comprises a separating valve (38) which opens in the direction of conveyance and which connects the partial chambers (2, 18). The separating means can be moved back and forth in the direction of conveyance and is connected to a drive device for this purpose. When the separating means is moved in the direction of conveyance, dosing liquid is sucked in via the inlet valve (6) and is simultaneously discharged via the outlet valve (28). This process is carried out smoothly and continuously.

Abstract: The barrel pump has a tubular pump housing and a rotor shaft which is supported by a support tube and, at its bottom end, bears an elastic cone which has a circumferential groove which interacts with the opening edge of an inlet in the manner of a snap-action closure when the rotor shaft is displaced in the direction of incoming flow with respect to the pump housing. The cone seal is situated in front of the inlet, as seen in the direction of flow. To displace the rotor shaft with respect to the pump housing, a rotary cap is provided above the outlet, pins of which cap engage in grooves of a groove flange which is screwed onto the pump housing, the grooves having a pitch, so that as a result of the rotary cap being turned relative displacement between rotor shaft and pump housing is brought about.

Abstract: A barrel pump has a main pump pipe set comprising an outer housing jacket and a supporting pipe received therein for a rotor shaft. Either a carrier part with an individual sliding ring seal or a carrier part which corresponds in its outer dimensions to the carrier part and has a leakage channel for ascending liquid can be screwed onto the lower end of this main pump pipe set. The rotor shaft projects beyond this main pipe pump set. It is also possible for a carrier part with a leakage channel and a double sliding ring seal arranged in the region of the leakage channel to be screwed on. Due to their identical outer dimensions, the carrier parts are interchangeable. A pump base which encloses the pump rotor and is fastened to the lower end of the rotor shaft can be attached to the lower end of each carrier part.