SU1674070A1 - Device for producing liquid components mixture - Google Patents

Abstract

The invention relates to the field of discrete dosing of components of multi-component mixtures. The purpose of the invention is to simplify and increase the reliability of the device. The device contains a dosing tank, inside of which is placed a dosing element in the form of a sealed glass, installed in divisions to indicate the level with the possibility of axial movement, in addition, a level sensor connected to the control unit and the mixer. The level sensor is made in the form of a vertically installed tube and an L-shaped pipeline, inside which there is a double-arm lever, one end of which is a flap, and the other is placed on a magnetically controlled contact. 2 Il.

Description

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This invention relates to the discrete dosing of components of multi-component mixtures.

The purpose of the invention is to simplify and increase the reliability of the device.

Figure 1 is a diagram of an apparatus for producing a mixture of liquid components; 2 a level sensor, a cut.

The device contains pipelines for the flow of liquid components 1-3 (there may be any amount depending on the quality composition of the mixture obtained), connected to sources 4-6 of liquid components through the actuator 7, including valve block 8 9-11 and switching unit 12, from the pneumatic-hydraulic valve 13 and pumps 14, 15, and ensuring the flow of components into the dosing container 16, inside of which the dosing element 17 is placed in the form of a sealed cup fixed on the rod 18 with applied divisions level indications (previously ottarirovany), connected to the means 19 (the flywheel or any other actuator, you can manually), its vertical movement on the lid 20. The dosing tank 16 is connected to the mixer 21 through a tube 22, the presence of a level in it is determined by means of a sensor 23 level. In addition, a device for producing a mixture of liquid components contains a component setting ratio of components 24, the output of which is connected to the first input of control level 25, the second input of which is connected to level sensor 23, and the output to actuator 7.

As a source of liquid components, there can be either line 4 (in the case of water) or tank 5, 6 (in the case of ammonia and hydrogen peroxide).

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The valve block 8 is designed to start up the block 12, which supplies components to the dosing tank 16. The valve block 8 contains electropneumatic valves 9-11, each of which is connected to a corresponding means that provides liquid to the dosing tank, namely: valves 9, 10 - with bellows pumps 15, 14, respectively, and valve 11, with pneumo-hydraulics, with valve 13 to them,

The component ratio setting unit 24 is intended to set the sequence (order) of the component supply and their volume ratio and is represented by an electronic scoreboard with a digital indication.

1electric control unit 25 is designed to regulate the operation of the actuator 7, the component setting unit 24, and the level sensor 23 by receiving the corresponding signals from the level control unit 23, as well as issuing signals to the actuator valve unit 8 to run block 12.

The level sensor 23 is made in the form of a vertically installed tube 26, the upper end of which is connected to an L-shaped pipeline 27, inside of which is placed a two-arm lever 28, one end of which is collapsed by a flap 29 located on the vertical part of the L-shaped pipeline, and the other end is mounted magnetopraolmmy contact 30.

A level sensor 23 is connected to a control unit and is designed to generate a signal that carries information about the liquid reaching a predetermined component level in the metering device, and for fixing it to completely drain into mixer 21, and signals from the magnetically controlled contact 30 are sent to control unit 25.

A device for producing a mixture of liquid components works as follows.

The diagram shows the preparation of peroxide-ammonia mixture in the ratio

HgOa: NH / iOH: H20 1: 1: 3.

Initially, the metering element 17 is set at a certain level in the metering container, for which, by means of the means 19, the element 17 is lowered (raised) down by a predetermined dose, namely, the division on the rod 18, which corresponds to the specified volume of the component. In block 24, the setting of the ratio of components by means of a toggle switch (not shown in the drawing) is the dose ratio (multiplicity)

each component: 1 part hydrogen peroxide, 1 part ammonia, 3 parts water. After that, start sequentially feeding component by component. To do this, press the START button on the control block 25, the signal from which is transmitted to the actuator 7, in particular to the solenoid valve 11 of the valve block 8, which activates the pneumatic-hydraulic valve 13 (opens it). The water supply to the dosing tank 16 begins until its level rises just above the tube 27 so that the water completely fills it (according to the law of communicating vessels) and begins to flow by gravity into the mixer 21. At the same time, the liquid (water) acts on gate 29, deflecting it in the opposite direction, opening the passage, and contact 30 coming to the magnetically controlled contact (reed switch), closing an electrical circuit. The signal from the level sensor 23 is supplied to the control unit 25, from where the solenoid valve 11 receives a signal for closing and, from it, the pneumatic-hydraulic valve 13, which blocks the water supply to the dispenser. Water through the tube 22 enters the mixer 21 according to the ejection method (vacuum) until the number (1 in the first part) on the scoreboard (at the water location) of the unit 24 setting the ratio of components lights up. The time relay of block 24 (the time during which a part of the component is to be ejected) is set experimentally), the signal from which goes to control unit 25. In the absence of water in the tube 22 and the level sensor 23, the valve 29 will return to its original position, i.e. the tube through which water entered the dosing tank 16 will overlap and contact 30 will open the electrical circuit, which is also a signal to the control unit that the next portion of water can be supplied.

The signal from control unit 25 re-enters block 8, namely valve 11. The second portion of water begins to flow (similar to the first), then the third, and the numbers 2 and 3 are lit on the display. After filling the mixer with water, the signal from control block 25 is supplied to the solenoid valve 10, which gives a signal to start the pump 14, which delivers the next component (ammonia) to the dosing tank 16. The unit 24 lights up on board. The process of feeding the next component is similar (as described for water).

In the event that the supplied volumes of the components are different, they are controlled by rotating the means 19 to a certain division on the rod 18, into which it lowers or lifts the dosing element 17 in the dosing container 16, increasing or decreasing its capacity.

In order to ensure the efficiency of the dispenser, it is necessary to maintain a constant level of the liquid component — just above the tube 26. The dose (volume) of the components at a constant level can only be changed by moving the metering element 17 in the axial direction.

Using the proposed device will allow to obtain a mixture of liquid components as aggressive. and non-aggressive, it does not require readjustment, since there are no chafing and moving parts, the design of the device is simplified, which in general provides an increase in its operational capabilities.

Claims (1)

Invention Formula An apparatus for producing a mixture of liquid components comprising conduits for the flow of liquid components, connected to the metering tank, on which the actuator is installed, the component setting unit, the output of which is connected to the first input of the control unit, the output of which is connected to the input of the actuator, where the metering element and the level sensor are located in the metering tank, in order to simplify and increase the reliability of the device, the metering element is designed as a sealed glass mounted on a divider rod to indicate the level with the possibility of axial movement, The level sensor is made in the form of a vertically installed tube, the upper end of which is connected to the L-shaped pipeline, in which a two-arm lever is placed, one end of which serves as a flap located on the vertical part of the L-shaped pipeline and connected to the mixer, and on the other end placed magnetic contact connected to the second input of the control unit. } -IFig .g Phi2. 2