SU1174774A1 - Apparatus for controlling the weight continuous multicomponent matering - Google Patents

Abstract

CONTROL weights CONTINUOUS multicomponent dosage comprising dial overall performance and weight continuous with a series connected multiplier comparing unit regulator, the actuator and the flow sensor, whose output is connected to one input of the comparison-d NIN of t n and h And so that, in order to improve the stability of the quality of the mixture by providing a predetermined ratio of components with the loss of controllability of one of the dispensers, each dispenser oops continuous introduced shaper signal level, and the switch layer The relative generator. performance clones of an adjacent component, implemented as a series-connected divider j of the multiplication node and adder, and the controller output is connected to the input of the signal level generator, the output of which is connected to the control input of the switch, whose contact is included in the circuit, connecting the adder to another input Comparison unit, one output of the multiplier is connected to the inputs of the divider and adder, and the other output is connected to the divider form (L value of the output deviation of the adjacent component of the next The output of the previous metering flow sensor output is connected to the input of the multiplier node, the multiplier and the last metering flow sensor outputs are connected respectively to the inputs of the multiplier and multiplier of the first metering unit, and the output of the common production setter is connected to the multiplier inputs sl all weighers continuous 4 action.

Description

one . one

The invention relates to weighing technology, in particular to devices for metering substances to be mixed,

The purpose of the invention is to increase the stability of the quality of the mixture by providing a predetermined ratio of components when one of the dispensers loses control,

The drawing shows a structural block diagram of the proposed device. properties.

The device contains a setpoint J of total capacity, weight metering units 2 and shapers of 3 levels of variation in performance of adjacent components,

The composition of each of the dispensers 2 includes a shaper 4 signal levels, a switch 5, a multiplier-b, a comparison unit 4, a controller 8, an executive; a feeder mechanism 9 (not shown) and a flow sensor 10.

Each shaper :. 3 consists of the divisor P, the multiplier 12 and the adder 13,

Each switch 5 has a normally closed contact 14 in the circuit connecting output CX1D of the adder 13 to the input of the comparison unit 7,

Unit 1 is connected in parallel to the inputs of the adder 13 of all dispensers 2,

The connections between the elements of the dispensers 2 and the formers 3 and the connections between the dispensers 2 and the formers 3 of the different components are identical.

The output of the multiplier 6 is connected to the input of the unit 7 comparing its dispenser 2 and to one of the inputs of the divider 11 of the dispenser 2 of the connected component (and for the last dispenser - to the input of the divider 11 of the dispenser of the first component) ..

The output of the comparison unit 7 is connected to the input of the controller 8, the output of which in turn is connected to the inputs of the driver 4 and the actuator 9.

The transducer of the flow sensor 10 is connected to one of the inputs of the unit 7 comparing its dispenser and to the input of the intelligent inhabitant 12 of the next dispenser 2 (and for the last dispenser of the dispenser to the input of the first dispenser 12 yf-burner).

The output of the multiplier 6 is the connection by the inputs of the divider 11 and the adder 13, which are connected to each other through

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the multiplier 12. The output of the imaging device 4 is connected to the control input of the switch 5,

The device works as follows.

When turning on the device from setpoint 1, the multiplier 6 of all metering units 2 receives a signal of a given overall performance,

At the outputs of the multipliers 6, signals (1,2 ,,,,, N) are set to the specified performance of each metering device, which are supplied to the comparison units 7, where they are compared with

signals of actual consumption /) {coming from the sensors 10 flow.

The mismatch signals L are sent to the regulators 8, the output signals of the regulators 8 are fed to the actuators 9 of the feeders, adjusting the costs of the components.

The signals ui also arrive at the signal conditioning drivers 4 that control the switches 5.

the way that their contacts remain open. When dispensers reach a capacity (0.85 0, 9) Rc1, the mismatch signals U decrease to the level at which the contacts 14 close, connecting the formers of the 3 levels of deviation of adjacent components to the dispensers 2,.

In the case of coming to one of the dispensers, for example, the Nth, disturbance, not

by the regulator 8, this dispenser loses controllability, the error signal opens contact 14, disconnecting the driver 3 from the N-dispenser, which becomes the master

in relation to the others, and the shapers of the 3 levels of deviation of adjacent components will adjust the performance of the rest of the dispensers in terms of the master's performance as follows.

in the way

From the output of the multiplier 6 N-ro batcher, the signal n is fed to the second input of the divider 11 of the first driver 3, to the first input of this divider

a signal of a given performance is received intelligently: mtel 6 of the first dispenser 2,

From the output of the divider .11, the signal K, fu / ЧЧЧ / зCHN goes to the multiplier

12, where it is multiplied with the actual flow signal N-ro of the component Rc, coming from the output of the sensor 10, flow rate N-ro of the dispenser. The resulting signal Kp, K to P and in the adder 13 is matched with the signal P% h received from the multiplier. 6 of the first metering unit 2, and as a correction signal, via contact 14, it goes to the unit 7 comparing the first metering unit, and from there to the controller 8, which will adjust the performance of the first metering unit 2 according to the N-ro capacity. In the same way, the performance of the second dispenser 2 is corrected for the performance of the first, the third for the second, etc., ensuring the specified ratio of the components to be dosed and the quality of the output mixture. The shapers of the 3 levels of deviation of the adjacent components correct the specified ratio of the dosed components 8 in the case of the arrival on one of the perturbation dispensers worked out by the regulator, i.e. not leading to loss, controllability, but on a positive impetus correlating e {during the time of the transient process (time worked by the disturbance regulator). In this case, the correction is performed in the same way as when one of the dispensers loses controllability.

Claims (1)

WEIGHT CONTINUOUS CONTINUOUS DOSING CONTROL DEVICE, comprising a total capacity adjuster and continuous weighing batchers with a multiplier, a comparison unit, a regulator, an actuator and a flow sensor, the output of which is connected to one input of the comparison unit, Moreover, in order to increase the stability of the quality of the mixture by ensuring a given ratio of components in case of loss of controllability by one of the dispensers, in each weight ator administered continuous level signal generator, a switch and driver The relative level. the performance variation of an adjacent component, made in the form of a series-connected divider, multiplication unit and adder, the output of the regulator connected to the input of the signal level former, the output of which is connected to the control input of the switch, the contact of which is connected to the circuit connecting the adder to the other input of the unit In this case, one output of the multiplier is connected to the inputs of the divider and adder, and the other output is connected to the divider of the shaper of the level of deviation of the productivity of the adjacent component of the next dispenser, to the input of the multiplication unit of which the output of the flow sensor of the previous dispenser is connected, the outputs of the multiplier and the flow sensor of the last dispenser are connected respectively. respectively, with the inputs of the divider and the multiplication unit of the first dispenser, and the output of the master unit of general productivity is connected to the inputs of the multipliers of all continuous weighing batchers. S and ,,, 1174774> .1 1174774