SU449885A1 - Dosing head for automatic filling of liquids in vessels - Google Patents

Description

one

The invention relates to the field of dosing of liquids, namely, automatic machines for filling liquids into vessels, for example vegetable oil.

A known dosing head for automatic machines for filling liquids into vessels consists of a measuring cylinder communicated with the supply pipe with a piston having channels blocked by a spring-loaded valve mounted in the lower part of the cylinder of a drain pipe with a shut-off valve and a centering bell.

In order to dispense viscous liquids, the proposed dosing head for automatic liquid dispensers into vessels is provided with a tube to equalize the pressure inside the cylinder after draining the fluid, one end of which is connected to the lower cavity of the cylinder and the other to the supply pipe and mounted inside the drain tube , at the lower end of which there is a shut-off valve.

FIG. 1 shows the proposed dosing head in the initial position; in fig. 2 - automatic filling machine for liquids, side view; in fig. 3 - bottom end part of the discharge tube of the dosing head and section along A-A; in fig. 4, 5 and 6 - dosing head, respectively, at the time of the beginning of eli2

wa, ending the discharge and filling the cylinder with liquid.

The dosing head for automatic machines for filling liquids into vessels consists of a measuring cylinder 1 with a pressure of 2, having channels 3, blocked by a spring-loaded spring 4 valve 5; mounted at the bottom of the cylinder drain pipe 6 with a shut-off valve 7; centering bell 8 and tube 9 for equalizing the pressure inside the cylinder after draining the fluid.

One end of the tube 9 is communicated with the lower cavity of the cylinder, and the other with the supply pipe 10.

Inside the drain tube is mounted spring-loaded spring 11 rod 12, at the lower end of which is located the shut-off valve 7.

The operation of the dosing head (see Fig. 1), namely filling the dose and discharging, is controlled by raising and lowering the bottle 13 on the table 14 of the automaton, which, resting against the bell 8, raises and lowers the tube 6.

The bottle, resting its neck on the base of the centering bell, lifts it.

The stop 15 travels the distance to the base of the housing 16 and lifts the drain tube 6 (see Fig. 3) by the same distance, which closes the channel 17 of the tube 9 for pressure equalization and at the same time opens the U-shaped drain holes of the shut-off valve 7 In this position, the piston 2, together with the rod 18, under the pressure of the oil on its upper part, transfers: downward, displaces the dose into the bottle (see Figs. 1, 4 and 5). In doing so, the valve 5 is pressed against the piston 2 by the action of the difference in pressure of oil above and below the piston. When the piston 2 reaches the lower position (see Fig. 5) by a spring 11, the rod 12 is raised and thereby the shut-off valve 7 closes the drain holes in the tube 6. The latter serves to prevent air from entering the measuring cylinder 1 of the dosing head.

When the bottle is lowered down (see Fig. 6) on the lifting and lowering table 14 under the action of the spring 19, the stop 15 together with the tube 6 is lowered to its original position, opening the channel 17 of the tube 9 and blocking the drain holes in the tube 6.

Then the fluid enters the sub-piston cavity, and the pressure above and below the piston is equalized, and the valve 5 is removed by spring 4 from the piston 2, as a result of which the cavities above and below the piston communicate with the channels 3 and the piston due to the difference between its upper and lower parts, up, with the last one more than the first. The liquid flows from the upper cavity B to the lower one through the channels 3, and the piston 2 rises upward until the valve 5 is pressed against the lid 20 and closes the channels 3. The dosing head thus takes the initial position.

The volume of fluid displaced by the piston 2 constitutes the dose and is adjusted by means of the cap 20.

The centering bell 8 is held in its initial position by means of a limiting bar 21.

Subject invention

The dosing head to the automatic machines for filling liquids into vessels consists of, and communicating with, a supply pipe of a measuring cylinder with a piston, having channels blocked by a spring-loaded valve, mounted in the lower part of the cylinder of a drain tube with a shut-off valve and a centering bell, differing in that, in order to dispense viscous liquids, it is provided with a tube for equalizing the pressure inside the cylinder after draining the liquid, one end of which is connected to the lower cavity of the cylinder and the other to the supply pipeline, mounted inside the discharge tube spring-loaded rod, the lower end of which shutoff valve is located.

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