SU750282A1 - Continuous-action multicomponent by-weight meter - Google Patents

Description

The invention relates to weighing technology. Weight continuous multi-component metering devices are known, containing feeders with actuators, weighing gauges and control systems with gauges, comparison elements, amplifiers and logic elements and 2. The closest technical solution of the known ones is a weighted multi-component batcher containing component feeders with actuators mechanisms, weighing device and control system, including a start-up unit, prohibit and delay elements, triggers and converters 3. However, the known device is not very productive. This is because the set of a given portion is produced by a discrete set of components of this portion, which requires a certain amount of time. The purpose of the invention is to increase the performance of the dispenser. To do this, integrating blocks are introduced into the control system according to the number of components to be dosed, with the output of the weight gauge in parallel connected to chains formed from series-connected prohibition elements, the integrating block and the trigger, the output of which is connected to the start unit connected to the first feeder actuator, the elements of the prohibition of their own and the following chain and through the first converter with the actuator mechanism of the second feeder, the output of the second chain is connected with uyuschey chain and via a second inverter to an actuator of the third feeder, and the output of the last chain is coupled with a start block and via a delay element to the trigger of the first chain and puoka unit, the output of the integrating unit

the first chain is connected to the trigger input by the chain trace.

FIG. 1 shows the block diagram of the dispenser; FIG. in fig. 2 shows an example of the implementation of a control system for a metering device on pneumatic avtomatics elements.

The dispenser contains bins-feeders 1,2,3, which are equipped with actuators 4,5,6 outlets (not shown), the weight measuring device 7, which can be expelled, for example, in the form of a screw, tray or other type of flow meter. The output of the weight measuring mechanism 7, connected in parallel to the outputs of elements 8,9,10 prohibition, connected through integrating blocks 11,12,13 with corresponding triggers 14,15,16, Triggers 14 and 15 are selected to prohibition elements 8,10 and through converters 17.18 to executive mechanisms 5.6 b of pick-up feeders 2.3, the output of trigger 16 through delay element 19 is connected to start-up unit 20. The output of trigger 14 is also connected to the input of prohibition element 21 (see Fig. 2 Each of the integrating units 11,12, 13 can be performed, for example, on the comparison elements 22,23 (see FIG. 2}, valve ane 24, relay 25, capacitance 26 and adjustable throttle 27, starting block 20

includes button 28, trigger 29 and relays 30 and 31.

The output of the trigger 14 is connected to the control chamber of the trigger 29 starting blocks and through an adjustable choke 32 to the converter 17, which includes interconnected and the actuator 5 relays 33 and 34.

The Converter 18 includes a relay 35 36, and the delay element 19 - the relay 37, the capacitance 38 and the adjustable choke 39 The dispenser works as follows. When the button 28 is turned on, the trigger 29 of the start-up block 20 is activated and the signal from its output through the relay 30 occurs to the actuator 4. The actuator 4 opens the valve of the feeder hopper 1 and the dosing material enters the weighing device 7, the output of which is a signal proportional to the mass of the material passing through it. This signal through the open element 8 enters the integrating unit 11, in particular, into the deaf chamber of the comparison element 22, at the output of which the signal will accumulate, i.e. its summation over time. The level of the accumulated signal, and therefore proportional to it

the amount of material will be determined by the reference level of the reference element 23. When the integration level of the task is reached, element 23 will trigger and the power will flow to relay 25. Relay 25 will trigger and trigger trigger 14, and trigger 16 will reset. The signal from the output of the trigger 14 will reset the trigger 29 of the start block, and therefore actuator 4 will trigger and close the bunker gate 1. At the same time, the signal will go to relay 33 of converter 17. Relay 33 will trigger and open the relay 34 signal to the actuator 5 , which will open the gate valve of the bunker-feeder 2 and the dosed material of the nugget come to the weighing mechanism 7.

Simultaneously with the arrival of the signal from trigger 14 to the starting block 2O and the converter 17, it will pass to elements 8 and 21. Disable element 8 to block f

integration 11. The signal from the weighing instrument 7 will begin to flow through elements 9 and 21 to the integration block 12, upon reaching the specified integration level (flow), which is determined by the reference level of the reference element 23, the latter will trigger through the relay 25 triggers trigger 15. Signal trigger 15 switches elements 9 and lOj disables converter 17 through relay 34, actuator 5, and through relay 35 of converter 18 turns on actuator 6.

The dosing material will begin to flow to the hopper 3. A signal proportional to the mass of the passed material will accumulate in the next integrating unit 13, the integration level of which is determined by specifying its reference element 28. When this level is reached, a relay 25 will trigger, triggering 16. The trigger signal 16 turns off the actuator 6 buz-gkera-feeder 3, switches the relay 30 of the starting block 2 O and goes to the delay element 19, in particular the relay 37. After a certain delay time, the relay 37 will work, h Through relay start block 31, the actuator 4 of the hopper feeder 1 is turned on, reset, trigger 14 and the dosing cycle begins to repeat.

Claims (3)

1. Karplish, E. B., Automation Equipment for Measuring and Dosing of Mass, M, Mashinostroenie, 1971. 2. USSR Author's Certificate NO 478196, class, Q 01 Q 9/00, 1973. 3. Authors certificate of the USSR Ng 452753, cl. Q O1 G, 19/28, 1972 (prototype).