SU1404829A1 - Liquid meter - Google Patents

Abstract

Invention m. used to deliver certain doses of fluid to a medium with a high, intermittently varying pressure and improves the accuracy of dosing. The filling tank is made of two detachable housings 9 and 10. The liquid enters the filling tank through the inlet 11 in the lower part of the housing 10 and, due to the non-return valve 12, is forced out through the supply pipe 13 into the measuring vessel 6, placed

Description

(L

00

to

above liquid level. The volume of the measuring vessel 6 does not exceed the working volume of the filling tank. Dose

the liquid is expelled from the vessel 6 by compressed gas through the drain pipe 7 to the filling tube 3. 1 sludge.

one

The invention relates to devices for dispensing liquids and can be used to supply certain doses of liquid to a medium with a high, periodically varying pressure, for example, automobile cylinders for compressed gas during their charging.

The aim of the invention is to improve the dosing accuracy.

The drawing shows a liquid dispenser, a general view.

The liquid dispenser contains a supply tank 1 with a sealed plug 2, which is equipped with a filling tube 3 and a compressed gas supply pipe 4, the output end 5 of which is located above the liquid level. In the supply tank 1 there is an open measuring vessel 6 with a drain pipe 7 connected through a coupling 8 with a filling tube 3, and a closed filling tank made of two detachable housings — the top 9 and the bottom 10 with an inlet 11 with a check valve 12. The fuel tank is provided with a feed tube 13, one

the end of which is located at the bottom

filling tank, and the other - above the measuring vessel 6, installed above the liquid level, while the volume of the measuring vessel does not exceed the working volume of the filling tank

The coupling 8 through a threaded connection with the filling tube 3 provides an adjustable fixed installation of the drain pipe 7

to adjust the dose volume.

The liquid dispenser operates as follows.

Using the control system of the injection station, the metered liquid in the required quantity is supplied to the inside of the supply tank 1 through the filling tube 3 with the

Q

5 0 5

0

five

0

five

Research Institute of compressed gas supply with the atmosphere. Then, the supply tank 1 communicates with a source of compressed gas, which displaces the metered liquid from the measuring vessel 6 through the drain pipe 7 into the filling tube 3 and, together with the liquid, enters, for example, the vehicle cylinders. At the same time, when the pressure in the supply tank 1 is increased, the liquid through the check valve 12 enters the filling tank, compressing the gas cushion in it. After the dose has been dispensed, the pressure in the compressed gas supply line 4 is reduced to atmospheric, which causes the gas cushion in the filling tank to expand to its original volume. Due to the check valve 12, the liquid entering the filling tank is displaced through the falling pipe 13 into the measuring vessel 6. In order to ensure the operation of the dispenser with medium pressure cylinders, the filling capacity has a volume that ensures filling the measuring vessel with medium pressure. - When working with high gas pressure excess liquid, overflowing the edge of the measuring vessel, flows back into the supply tank. The volume of the dose is determined by the position of the discharge port 7.

Claims (1)

Invention Formula A liquid dispenser containing an airtight supply tank with an open measuring vessel placed in it with a drainage pipe and a closed filling tank with an inlet opening in the lower part located below the liquid level, in order to improve metering accuracy, the filling tank the tank is equipped with a return valve in the inlet, nominal opening and supply pipe, one 31404829 The end of which is located in the lower part of the compressed gas supply is located above the type of the filling tank, and the other is. the level of liquid, while the volume above the measuring vessel, and measuring the measuring vessel does not exceed the working vessel and the output end of the pipeline volume refill capacity.