SU1597568A1 - Liquid batcher - Google Patents

Abstract

This invention relates to a measurement technique and can be used for liquid dispensers. The purpose of the invention is to improve the accuracy of the dosing of the liquid. A flow meter and a valve are installed in the liquid metering device along the pipeline to the measuring vessel, and an additional valve is installed on the pipeline after the measuring vessel. Upon a signal from the flow meter, after opening the valve located before the measuring vessel, the integrator counter generates a current dose signal proportional to the amount of liquid passing through the measuring vessel. After the measuring vessel is filled with liquid, an additional valve opens, and according to the flow meter signal, an additional counter integrator, a fluid dose setter and a multiplication unit form a signal corresponding to a predetermined dose of liquid. When the signal of the current dose to the signal corresponding to a given dose of liquid is equal, the comparison unit generates a signal that ensures the locking of the additional valve. Due to this, an additional valve passes the amount of fluid equal to a given dose. 1 il.

Description

The invention relates to a measurement technique, namely to liquid dispensers.

The purpose of the invention is to improve the metering accuracy of the liquid.

The drawing shows a diagram of the proposed liquid dispenser.

The liquid dispenser contains a flow meter 1 and a valve 2 installed along the pipeline 3, an integrator counter 4 and a unit 5 of a liquid dose. When this counter-integrator 4 is connected by the first input to the output of the flow meter 1.

The liquid dispenser also contains a multiplication unit 6. connected by the first input to the output of the unit 5 of the liquid dose, the reset unit 7, connected by the first output to the second input of the integrator counter 4, the comparison unit 8 connected by the first input to the output of the integrator counter 4, an additional valve 9 installed on the pipeline 3 made measuring vessel 10, equipped with a sensor. 11 of the lower level and the sensor 12 of the upper level, the first relay unit 13,

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with

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the first T4, the second 15 and the third 1b are the closing contact pairs, the second is the unlocking, block .17) having the fourth 18, the fifth 19 and the sixth 20 closing contact pairs, and the additional counter-integrator 21, the valve 2 is equipped with the first electric actuator 22, made l the first limit switch. 23. Measuring vessel 10 is located between valve 2 and additional valve 9, which is equipped with a second electric actuator 24 connected to the first closing contact pair .14 and executed with the second limit switch 25, which is connected in series with the fourth closing contact 18 to the inputs of the block - ka 7 reset. The reset unit 7 is connected to the second and third outputs respectively to the first input of the additional counter integrator 21 and to the input of the first relay unit 13 connected by other inputs to the outputs of the lower level sensor 11 and the upper level sensor 12. The second contact pair 15 is connected between the output of the flow meter 1 and the second input of the additional counter-integrator 21 connected by the output to the second input of multiplication unit 6, the output of which is connected to the second input of the comparison unit .8 connected by the output through the third an active contact pair 16 to the input of the second relay unit 17. A closing contact pair 19 is connected between the output of the first limit switch 23 and the input of the second electric drive 24 connected by another input to the other; the output of the first limit switch 23, and the pole of the closing contact a pair of 20 is connected to the first electric drive 22.

Liquid dispenser. Works in the following way. , AT . the initial state of the valve 2 and the additional valve 9 are closed, the first and second limit switches 23. and 25 are closed, the measuring vessel 10 is empty, and the setting unit 5 is set as a ratio of the specified dose of liquid to the volume of the measuring vessel 10. At the same time, at the output of the setting unit 5 of the liquid dose, a signal is formed, which is proportional to the number, which indicates how many measuring vessels 10 need to be;

0

five

0

five

0

45

50

55

At the beginning of the metering, the valve 2 is opened, which ensures the flow into the measuring vessel 10 of the fluid passing through the pipeline 3 through the flow meter 1. The signal from the flow meter 1 is fed to the counter integrator 4, generating a current dose signal proportional to the amount of liquid passing through the flow meter 1 When the low level sensor 11 is triggered, the first relay unit 13 closes the second closing contact pair 15, which connects the additional counter integrator 21 to the output of the flow meter 1. When the upper sensor 12 is triggered After filling the measuring vessel 10 with a liquid, the first relay unit 13 opens the second closing contact pair 15, closes the first 14 and third 16 closing contact pairs, and blocks this state. The closure of the first closing contact pair 14 provides the opening of an additional valve 9, through which the fluid flowing from the measuring vessel 10 begins to flow, and the opening of the second closing contact pair 15 causes the additional counter integrator to produce 21 on its output signal corresponding to the volume of the measuring vessel. 10. The signal of the additional integrator counter 21 is multiplied with the signal of the unit 5 of the dose of fluid in multiplication unit 6, which generates a signal corresponding to a given dose of fluid. The signal block is 6 times. - applied to a comparison unit 8, to which also the signal of the current dose of the output, the integrator counter 4, is supplied.

When reaching the equality of the signal of the current dose of the integrator counter 4 and the signal of the multiplication unit 6, the comparison unit 8 generates a signal passing through the closed third locking contact pair 1b to the second relay block 17, which provides the closure of the fourth 18, fifth, 19 and sixth closure contact steam and blocking of this condition. The closure of the sixth closing contact pair 20 enables the first electric actuator 22 to turn on, which closes the valve 2, which stops the flow of fluid through the pipeline 3, and closes the first limit switch 23. The first limit switch 23 through the fifth closing contact pair 19

includes a second electric actuator 24, which closes the second limit switch 25, which, together with the closed fourth closing contact 18, operates the operation of the reset unit 7, the reset unit 7 sets the integrator counter 4 and the additional integrator counter 21 into the null state, as well as unlocking the first relay unit 13, which ensures the opening of the third closing contact 16, leading to the unlocking of the second relay unit 17.

Claims (1)

Invention Formula A fluid dispenser containing a flow meter and a valve installed along the pipeline, an integrator counter connected by the first input to the flow meter outlet, and a liquid dose setting unit, in that, in order to improve the accuracy of the liquid metering, a multiplication unit connected by the first input is inserted into it. to the output of the liquid dose setting device, a reset unit connected by the first output to the second input of the integrator counter, a comparison unit connected by the first input to the output of the integrator counter, an additional valve installed The first relay unit, having first, second and third closing contact points, is installed on a pipeline made with a measuring vessel equipped with a lower level sensor and a higher level sensor. 0 five 0 five 0 five a pair, a second relay unit having a fourth, fifth, and shorted closing contact pair, and an additional counter integrator, and the valve is equipped with a first electric actuator made with the first limit switch, the measuring vessel is located between the valve and the additional valve, which is the second an electric drive connected to the first closing contact pair and made with a second limit switch, which is connected in series with the fourth closing contact pair to the inputs of the reset unit, which connects The second and third outputs, respectively, with the first input of the additional counter integrator and with the input of the first relay block are connected with other inputs to the outputs of the lower level sensor and the upper level sensor, the second closing contact is connected between the output of the flow meter and the second input of the additional counter integrator, connected by the output to the second input of the multiplication unit, the output of which is connected to the second input of the comparator connected by the output through the third closing contact pair to the input the second relay block, the fifth closing contact is connected between the output of the first limit switch and the input of the second electric drive connected by another input to the other output of the limit switch, and the pole of the closing contact pair is connected to the first electric drive. 4S 1-H f7 I , - - - - -