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: 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.