SU365582A1 - YCECO} FZNAYA ^? DT? | ^ GNO.YAH ": K ^ 1 ^. ^ -., ^: S; * ^ '- ^^^^^^ - Google Patents

Description

one

This invention relates to the field of weight measuring technology.

The known devices for multi-component weight dosing, containing normative strain gauge digital dispensers of the master and slave components with aeration gauges and control units for the multiserver, do not provide the required dosing accuracy.

In order to improve the metering accuracy in the proposed device, the metering units are equipped with a unit for calculating the ratio of the overweight weight of the batch to the weight installed on the setter, made in the form of a reversible counter, the input of which is connected to the weight measuring device through a control valve a unit divider of portions by a divider, and the dividers of the dispensers of the master and the slave components are connected to each other through a comparison circuit, the null-organ of which is connected to the control unit Auliei feeder dispenser slave komoneita.

FIG. J depicts a block diagram of optional features; in fig. 2 is a block diagram of a weight metering device.

Digital automatic weighing device /, which is the main link of the dispenser, is equipped with a C1 sing.

circuits with analog input and digital signal processing. It contains a weight sensor 2, a comparison circuit 3, a zero-organ - /, a pulse generator, a reversible counter; 6 pulses, digital-to-analog converter 7, block 8 digital indication.

The block diagram of the dispenser (Fig. I) contains, in addition to the weight / meter / setter P of the portions and unit 10, the control of the feeder P, as well as the node for calculating the ratio of the excess weight of the portion to the weight set on the setpoint 9, made in the form of a reversible counter 12 the weight, the input of which through the controlled valve 13 is connected to the weighing device 1, and the output is connected to the digital-to-analog converter 14 connected to the divider 15 and controlled by the portion control device 9. The divider 15 of the master component 6 is connected to the divider 15 of the dispenser With comlonept ;; : 7 chop onsus 18. null-organ 19 which is connected to the control unit 10 of the dispenser of the slave component 17.

The described device works as follows.

The main component dispenser 16 is first turned on.

The signal from sensor 2, ironically applied to the applied weight P, is fed through the comparison circuit 5 to the input of the null-organ amplifier 4, the output C1H of which is E0blow, oscillator 5 and, depending on the phase of the input signal, opens a reversible counter 6 pulses for addition or subtraction. The current value of the number in the reverse counter 6 is fed to the digital-to-analog converter 7 and the digital display unit 8. With the converter 7, the compensation voltage is supplied to the comparison circuit 3 in antiphase with the output signal of sensor 2. When these signals are equal, the control signal disappears at the output of the zero-organ 4, the counter stops working, the circuit comes to equilibrium, the signal supplied to the control unit 10, which turns off the feeder 11. Through the valve 13 opens the counter 12, counting the amount of material entering the receiving hopper (not shown) after turning off the feeder //. The number recorded in counter 12 and determining the amount of excess weight of the material of the leading component is converted into a digital-to-analog converter 14 into a signal that goes to divider 15. In divider 15, this signal is converted into sigal proportional to the ratio of excess weight to weight set to the portions of the portions 9. The work of the slave dispenser differs from the work of the master of the dispenser only in that the signal from the setpoint portions 9 of reaching the specified weight is used only to start the counter full weight 12, but does not affect the feeder //.

The signals from the dividers 15 of the master component dispenser 16 and the slave component dispenser 17 are fed to a comparison circuit 18, null organ / P, which through the control unit 10 acts on the feeder // slave component dispenser 17, turning it off.

relative increments of the weight of the current and driven components.

Thus, the described device carries out multi-component portioned weight dosing with individual dispensers according to the number of components interconnected by elements of the correction of the settings of the slave components according to the relative increment of the portion of the leading component.

Subject invention

A device for multicomponent weighing, containing portioned strain gauge digital dispensers

and slave components with unit controllers and control units of feeders, characterized in that in order to improve the accuracy of conditioning, in it the metering devices are equipped with a unit for calculating the ratio of over-dialed

the weight of the batch to the weight set on the setter, made in the form of a reversible counter, the input of which through a controlled valve is connected to the weight meter, and the output is connected to a digital-to-analog converter connected to a divider controlled by the unit setter, and the metering units of the master and the driven components are interconnected through a comparison circuit whose null-organ is connected to the control unit

feeder dispenser slave component.

-KM