RU2490602C2 - V neprimerov's automatic fluid dispenser - Google Patents

Abstract

FIELD: instrument making.

SUBSTANCE: proposed dispenser comprises service tank made of nonmagnetic material and including hollow housing with bottom and cover equipped with intake and discharge pipes. Intake and discharge solenoid valves and level gage are fitted in said pipes. Besides, it comprises counterweight articulated with weight partially immersed in fluid via flexible element passed through hinged with said weight. Level gage on post is arranged at service tank cover. One end of said post is rigidly connected with cover while indicator and hinged are arranged at opposite end. Said level gage is composed of a drum with zero mark through which passed is the rope connected with weight and counterweight to turn the drum about its axis. Two marks are applied on said weight that makes the consumable fluid dose setting element. Lower mark is applied for maximum fluid density at minus 50°C while lower mark identifies minimum fluid density at 40°C. Extra tank with tube is arranged atop aforesaid service tank. Said tube accommodates check valve while said tube is connected with intake pipe. Guide baffle is arranged inside said service tank and provided with fluid passage, float with magnet is arranged behind said baffle. Magnet controlled contacts are arranged outside of said service tank and electrically connected with intake and discharge solenoid valves. Air valve is mounted in top section of service tank.

EFFECT: higher precision of proportioning.

1 dwg

Description

The invention relates to the field of metrology, namely to automatic dispensing devices for liquids, for example petroleum products, and can be used to maintain a given level of liquids with different densities.

Known automatic dispenser of liquids containing a supply tank, comprising a hollow body with a bottom and a lid, equipped with inlet and drain pipes, in which inlet and drain solenoid valves are installed respectively, a pipe is installed inside the body, connected to the gas cavity at one end and fixed to the bottom with the other and a counterweight is placed inside the pipeline kinematically connected by means of a flexible connecting element, for example, a cable or rope, thrown through two hinges with a weight element partially immersed in a liquid and made in the form of a float-balancer and a magnet attached to it, having the ability to interact with the first and second magnetically controlled contacts that are installed in series along the outer side of the side wall of the housing with the ability to adjust their position relative to the bottom of the housing and are electrically connected respectively with inlet and drain solenoid valves, a source of compressed gas of constant pressure, which by means of a nozzle for supplying compressed gas n with a gas cavity of the body (see Description of the invention to the patent of the Russian Federation No. 2078312, IPC G01F 13/00, publication 04/27/1997).

A disadvantage of the known liquid dispenser adopted for the prototype is the low accuracy of dispensing liquids of various densities.

The task of the invention is to increase the accuracy of dispensing liquids of various densities.

The invention consists in the following.

An automatic liquid dispenser comprising a consumable tank made of non-magnetic material, including a hollow body with a bottom and a cover, equipped with inlet and drain pipes, in which inlet and drain solenoid valves are installed respectively, a level gauge including a counterweight kinetically connected using a flexible connecting element, for example, a cable thrown over a hinge with a weighing element partially immersed in liquid, a level gauge is installed on the cover of the consumable tank on a rack, one end of which It is firmly connected to the lid, and on the other end there is an indicator and a hinge made in the form of a zero-mark reel, through which a cable is thrown connected to a weight element and a counterweight, under the influence of which the drum can rotate around its axis onto a weight element, which fluid dose meter, two marks are applied, the bottom mark is applied at a maximum fluid density of -50 ° C, and the top mark is applied at a minimum fluid density of 40 ° C, in the upper part An additional tank with a tube is installed in which the check valve is located, the tube is connected to the inlet pipe, a guide wall with an opening for the passage of liquid is installed on the inside of the supply tank, behind which a float with a magnet is placed, magnetically controlled contacts are installed on the outside of the supply tank, which are electrically connected to the inlet and drain solenoid valves, an air valve is located on top of the supply tank body.

This improves the accuracy of dispensing liquids.

The invention is illustrated in the drawing, where figure 1 shows an automatic dispenser of liquids, a General view in section.

The automatic liquid dispenser contains a consumable tank 1 made of non-magnetic material, including a hollow body 2 with a bottom 3 and a cover 4, equipped with inlet and drain pipes 5 and 6, in which inlet and drain solenoid valves 7 and 8, a level gauge 9, including counterweight 10 kinetically connected by means of a flexible connecting element, for example, a cable 11 thrown through a hinge 12 with a weight element 13 partially immersed in a liquid, a level gauge 9 is mounted on the cover 4 of the expendable tank 1 14, one end of which is rigidly connected to the cover 4, and the indicator 15 and the hinge 12, made in the form of a drum 16 with a zero mark 17, through which a cable 11 is connected, is connected to the weight element 13 and the counterweight 10, under the action of which are fixed drum 16 has the ability to rotate around its axis 18, two marks 19 and 20 are applied to the weight element 13, which is the setpoint for the dose of the consumed liquid, the lower mark 19 is applied at the maximum density of the liquid with a temperature of -50 ° C, and the upper mark 20 is applied at the minimum densities bones with a temperature of 40 ° C, in the upper part of the supply tank 1 there is an additional tank 21 with a pipe 22 in which the check valve 23 is located, the pipe 22 is connected to the inlet pipe 5, a guide wall 24 with an opening 25 for a fluid passage, behind which a float 26 with a magnet 27 is placed, magnetically controlled contacts 28 and 29 are installed on the outside of the supply tank 1, which are electrically connected to the inlet and drain solenoid valves 7 and 8, the flow rate in the upper case 2 1 st tank is the air valve 30.

Automatic dispenser works as follows.

The filling of the supply tank 1 with liquid occurs with the inclusion of the inlet solenoid valve 7 by a signal from the control panel. In this case, the liquid level rises from the bottom 3 of the tank 1 to the upper set level. The weight element 13 partially immersed in the liquid, under the action of the counterweight 10 and the liquid displaced by the weight element 13, floats like a float and accompanies the level rise. The float 26 rises up, reaching the set liquid level, having entered the zone of magnetic forces of magnet 27, a magnetically controlled contact 28 is activated, which sends a signal to close the inlet solenoid valve 7. The air valve 30 is designed to connect the cavity of the supply tank 1 with the atmosphere. Further operation of the dispenser depends on the density of the liquid. We consider two extreme cases.

In the first case, the liquid has a maximum density, with temperature

-50 ° C. The weight element 13 is immersed in this liquid at the lower mark 19 on the weight element 13. When the set level corresponding to this liquid is reached, the zero mark 17 on the drum 16 coincides with the indicator 15. Under the influence of the magnetic forces of the magnet 27, the magnetically controlled contact 28, the inlet solenoid valve 7 closes and the fluid supply to the tank 1 is stopped.

In the second case, the liquid has a minimum density, with a temperature of 40 ° C. The weight element 13 is immersed in this liquid along the upper mark 20 on the weight element 13. Upon reaching the upper set level corresponding to the liquid with the minimum density, the liquid displaced by the weight element 13 is discharged into an additional tank 21 with the tube 22. Only then under the influence of the magnetic forces of the magnet 27, the magnetically controlled contact 28 is activated, the inlet solenoid valve 7 closes and the fluid supply to the tank 1 is stopped.

According to the signal from the control panel, a fluid flow occurs with the drain solenoid valve 8 turned on, the flow tank 1 is emptied, the fluid level decreases, the float 26 with magnet 27 goes down, entering the zone of magnetic forces of magnet 27, the magnetically controlled contact 29 is activated, which sends a signal to close drain solenoid valve 8. From the control panel, the drain solenoid valve 8 closes. If there is another dose of liquid in the supply tank 1 with the inlet valve 7 turned on through the open check valve 23, the liquid from the additional tank 21 is drained through the pipe 22 back into the supply tank 1, and at the liquid flow rate the check valve 23 is closed.

In the future, the operation of the liquid dispenser is repeated.

The claimed invention improves the accuracy of dispensing liquids.

Claims (1)

An automatic liquid dispenser comprising a consumable tank made of non-magnetic material, including a hollow body with a bottom and a cover, equipped with inlet and drain pipes, in which inlet and drain solenoid valves are installed respectively, a level gauge including a counterweight kinetically connected using a flexible connecting element, for example, a cable thrown over a hinge with a weighing element partially immersed in liquid, magnetically controlled contacts are installed on the outside of the supply tank, which are electrically connected to the inlet and drain solenoid valves, characterized in that a level gauge is mounted on the stand on the cover of the supply tank, one end of which is rigidly connected to the cover, and an indicator and hinge, made in the form of a drum with a zero mark, are fixed at the other end, through which a cable is thrown connected to the weight element and the counterweight, under the influence of which the drum can rotate around its axis, two marks are applied to the weight element, which is the presetter of the dose of the consumed liquid, the lower mark is applied at a maximum density of liquid with a temperature of -50 ° C, and the upper mark is applied at a minimum density of liquid with a temperature of 40 ° C, an additional tank with a tube in which the non-return valve is located is installed in the upper part of the supply tank, the pipe is connected to the inlet pipe , on the inside of the supply tank there is a guide wall with an opening for the passage of liquid, behind which a float with a magnet is placed, on top of the casing of the supply tank is an air valve.