RU2126959C1 - Process determining mass of flour loaded into flour carrier with use of hopper tensometric balance - Google Patents

Abstract

FIELD: measurement technology, various branches of industry. SUBSTANCE: initial readings of hopper tensometric balance are recorded prior to loading of flour into flour carrier. With achievement of preset level of flour in flour carrier discharge valve of hopper is shut and final readings of balance are recorded. Mass of flour loaded into flour carrier is determined as difference between final and initial readings of weights. Level of flour in flour carrier at which discharge valve of hopper is shut is set to be lower than that of fully loaded flour carrier. Before recording of final readings check of presence of flour at level corresponding to fully loaded flour carrier is conducted. EFFECT: increased accuracy of determination of mass of flour thanks to prevention of presence of flour in loading device after termination of loading of flour carrier. 1 dwg

Description

 The invention relates to weight measuring devices and can be used in various industries.

 A known method for determining the mass of flour loaded in a flour truck using a hopper strain gauge balance, in which the mass of flour is determined by counting the number of discrete doses loaded into the flour truck. (Isakovich EG. Scales and weight batchers, - M: Publishing house of standards, 1991, p. 263). The disadvantages of this method are the reduced accuracy and inconvenience of operation.

 The closest in technical essence to the proposed method is a method for determining the mass of flour loaded into a flour truck using a hopper strain gauge, in which before loading the initial readings of the scales are recorded, after reaching a predetermined level of flour in the flour truck, the exhaust valve of the weigh hopper of the strain gauge is closed and the final readings are recorded weights, and the mass of flour loaded in the flour carrier is determined as the difference between the final and initial readings of the scales (Isakovich E.G. Scales and weight batchers, - M: Publishers Your Standards, 1991, pp. 260-262). The disadvantage of this method is the reduced accuracy of determining the mass of flour loaded in the flour truck, because after closing the exhaust valve of the weight hopper, the flour located in the loading device located below the exhaust valve enters the flour truck, and at the same time, the flour truck can be overfilled, resulting in the loading device some flour will remain, different for different flour carriers.

 The purpose of the invention is to increase the accuracy of determining the mass of flour loaded in a flour truck. This goal is achieved in that the flour level in the flour carrier, at which the outlet valve of the weight hopper is closed, is set lower than the level corresponding to the fully loaded flour carrier, and before fixing the final readings, the absence of flour in the flour carrier is checked at a level corresponding to the fully loaded flour carrier, as a result of which excludes the presence of flour in the loading device after the loading of the flour truck.

 The drawing schematically shows a device for implementing the proposed method.

 The device comprises a weight hopper 1 mounted on load cells 2, equipped with an exhaust valve containing a shutter 3 with an actuator 4. Using a flexible sleeve 5, the weight hopper is connected to a loading device 6, equipped with lifts 7 and an exhaust valve containing a shutter 8 with signaling devices installed on it level 9 and 10.

 The proposed method for determining the mass of flour loaded in a flour truck using bunker tensometric scales is implemented as follows. Before loading starts, the initial readings of the scales are fixed, after which, using the hoists 7, lower the loading device 6, press it against the loading door 11 of the flour truck 12 and open the exhaust valve of the loading device, lowering the shutter 8. Then open the exhaust valve of the weight hopper 1, and flour 13 from weighing hopper enters the flour truck 12. After reaching level B of the flour in the flour carrier, fixed by the level 9 indicator, close the exhaust valve of the weighing hopper. After closing this valve, the flour located in the loading device 6, under the influence of its own weight, enters the flour carrier 12, after which, with the help of a level 10 indicator, the absence of flour in the flour carrier is checked above a predetermined level A corresponding to a fully loaded flour carrier, and in the case when the flour at level A is absent, the final readings of the scales are recorded and the mass of flour loaded in the flour truck is determined as the difference between the final and initial readings of the scales.

 Using the proposed method allows to increase the accuracy of determining the mass of flour loaded into the flour truck using hopper strain gauge scales, since it excludes the presence of flour in the loading device after the loading of the flour truck.

Claims (1)

 A method for determining the mass of flour loaded in a flour truck using a hopper strain gauge, in which the initial readings of the scales are recorded before loading, after reaching a predetermined level of flour in the flour truck, the exhaust valve of the weigh hopper of the strain gauge scales is closed and the final readings of the scales are recorded, and the mass of flour loaded in the flour truck , defined as the difference between the final and initial readings of the scales, characterized in that the level of flour in the flour carrier, at which the outlet valve of the weighing hopper is closed, is set smaller the level corresponding to a fully loaded flour truck, and the final readings of the weights are fixed after checking the absence of flour in the flour truck at a level corresponding to a fully loaded flour truck.