Abstract: A device for the measurement of the mass flow, in particular, of a bulk material flow, by the Coriolis measuring principle, comprising a motor with an impeller, driven at constant speed. The bulk material flow is dispensed onto the impeller, radially deflected and measured by means of a force measurement device for the drive torque of the impeller. A drive shaft supporting the impeller is rotatably mounted in a bearing sleeve and is coaxially enclosed by the same. The bearing sleeve is driven at a speed which corresponds to the speed of the drive shaft. The force measurement device is arranged directly between the drive shaft and the bearing sleeve.

Abstract: An apparatus for the metered removal of bulk material from a bin is described, the apparatus having a top bulk-material-filling opening and bottom bulk-material-removal opening, comprising a rotor that is connected in a driven manner to at least one sweeping arm disposed inside the bin near the bin's rotationally symmetrical floor and directed towards the removal opening. In order to create an apparatus for the removal of bulk material from a bin in which the mass of the removed bulk material not only can be metered very precisely, but which is also of simple design and easy to maintain, provision is made whereby the sweeping arm is attached on the bottom side of a separating element connected in a driven manner to the rotor, and whereby a settling zone is provided below the separating element in front of the sweeping arm, this zone only being open on one side to the bulk material through a feed opening, and on the other side to the removal opening.

Abstract: The invention relates to a storage container for granular or powdery bulk material. Said container comprises a lower, generally conical discharge element which is provided with a discharge opening for the bulk material, a controlled cut-off device being provided on the discharge opening. In order to allow the discharge quantity of the bulk material to be detected as simply as possible, a weighing module is provided at a discharge end of the cut-off device in relation to the direction of discharge of the bulk material, the flow of bulk material flowing through the weighing module. The weighing module continuously detects the weight of the bulk material discharged through the cut-off device and transmits control signals representing the weight to a control. The control initiates closure of the cut-off device once the added up control signals exceed a defined limit.

Abstract: The invention relates to a cross spring element, as it is preferably arranged in measuring apparatuses for the measurement of the mass flow of bulk materials according to the Coriolis principle. In that regard, two bearing elements (1, 2) that are rotatable relative to one another are provided in the measuring branch and comprise at least four mutually orthogonally crossing leaf spring elements (3, 4, 5, 6), which connect both of the bearing elements (1, 2) with one another. In that regard, the mutually crossing leaf spring elements (3, 4; 5, 6) of one radial direction (8) are arranged at least pair-wise and cross themselves on the rotation axis (7). The ends of each leaf spring pair (3, 4; 5, 6) in that regard are secured on one side respectively on different bearing elements (1, 2) so that they transmit radial compressive and tensile loads in each direction (8) simultaneously.

Abstract: The invention relates to a cellular wheel sluice that is embodied as a blow-through sluice and serves for dosing secondary fuel. The blow-through sluice comprises a supply chute (2) in the top area and a cylindrical housing section (1) disposed below the supply chute (2) and in which a cellular wheel (4) is arranged in a horizontal direction. The cellular wheel (4) includes radial webs (3), in the rotational area of which a blow-in hole (10) and an opposite blow-out hole (11) are provided on the faces (26) of the housing. The invention is characterized in that an injector nozzle (15) which blows the transport air into the rotating dosing chambers (5) so as to empty the same, is integrated into the housing in the zone of the blow-in port (10). Thereby pressure differences result in the dosing chamber (5) that is to be emptied such that only small pressure loads act upon the gap seals.

Abstract: The invention relates to a measuring device for determining the mass rate of flow of a mass flow, especially for measuring a flow of bulk material. An impeller wheel (2), which is connected to the drive shaft (3) and which is driven at a constant rotational speed, is thus provided. The impeller wheel (2) deviates an axially impinged mass flow in a radial direction and provides it with a radial and tangential speed component. The drive shaft (3) includes a spur-toothed wheel (11) which engages with an intermediate spur-toothed wheel (21) and which is driven by a driving spur-toothed wheel (20, 31). The intermediate spur-toothed wheel (21) is mounted on a force transmitting arm (24) which is maintained in a radial position by a force measuring device.

Abstract: The invention relates to a device for measuring a mass flow, comprising a measuring wheel (3) that is supported by a shaft (4) and that is driven and impinged axially by the mass flow. Said wheel deflects the flow, giving it both radial and tangential speed components. The shaft bears an actuation spur wheel (7), which engages with an intermediate spur wheel (8) that is held in position by a force measuring device (14) and has a second meshing with a drive spur wheel (9) that is driven by a drive motor (13). The diameter of the actuation spur wheel (7) is more than 0.3 fold, preferably 0.5 to 1 of the diameter of the measuring wheel (3). This provides a device for measuring a mass flow, which has a high zero constant and thus a high degree of measuring precision, is cost-effective to produce, robust during operation and which has none of the disadvantages of prior art.

Abstract: A transducer including a deformation body with a strain gage produces hysteresis-affected measured values based on the strain of the deformation body. Each measured value is to be corrected by the hysteresis error. For this purpose, a hysteresis model is formed from a recorded loading characteristic curve and the theory of the dipole density of the oriented elementary dipoles in the interior of the deformation body. With the aid of the hysteresis model, and the determined hysteresis-affected measured values, and in connection with the acquired loading history, a correction value is derived and used to correct the hysteresis error.

Abstract: The invention relates to a device for measuring the flow of material, especially of a flow of bulk material, according to the Coriolis principle of measurement. The device has an impeller (2) which is driven by a motor (9) with a constant r.p.m. The flow of material is fed to the impeller (2) and is radially deflected. The driving torque is measured by a torque measuring sensor. The driving torque is transmitted to a force sensor (22) by a pivot bearing (12) for determining the torque. The force-sensing element (22) has at least two horizontal leaf springs (16, 17) which cross each other and which are arranged in such a way that the crossing point of the leaf springs (16, 17) coincides with a rotational axis (13). A thrust bearing (14) is integrated into the pivot bearing (12). The weight of the drive train is transmitted to a stationary housing (8) by the thrust bearing (14) with the help of a ball bearing or toe bearing.

Abstract: The invention relates to a dosing device containing a supply container (8), a dosing container (30) and a discharge device (12). A separate vertical stirring section (22, 22A) is provided in each container, namely the supply container (8) and the dosing container (30). The vertical stirring section 22A located in the supply container (8) is provided with a drive unit (1) which is also used to drive the lower stirrring section (22) of the dosing container (30). The dosing container (30) can be removed horizontally, sideways. The two stirring sections (22) and (22A) have coupling elements (16, 25) with which they are detachably or releasably interconnected. A coupling arm (25) is provided to this purpose with driving pins (16) which engage in the rotating area of the driven upper stirring section (22A) so that the two stirring sections can be coupled and one stirring section can drive the other stirring section.