UA15319U - Method of pouring of liquids into containers - Google Patents

Abstract

A method of pouring of liquids into containers includes the operations of pouring under pressure of liquid preliminarily saturated by gas simultaneously with creation in the container of counter-pressure by supply inside of gas of saturation under pressure, which is less than the pressure of pouring in, and pressure balance inside and outside the container by release from it of a part of gas. After pouring in and before pressure equalizing inside the container and outside the liquid in the container is subjected to short-term pneumatic action by supply inside the container of gas of saturation under pressure, value of which is for 1.2-2.9 times greater than the value of the pressure of pouring in, and the duration of action is 1-7 s.

Description

Description of the invention

The method refers to the technology of packaging liquid products in various containers, in particular, carbonated water and 2 other carbonated drinks in PET bottles.

The closest to the proposed method is the method of bottling carbonated liquids, which includes pouring into the bottle a liquid pre-saturated with carbon dioxide. Simultaneously with the filling of the container, in its middle, in order to prevent losses of saturation gas, back pressure is created by supplying gas under pressure, the value of which is slightly less than the value of the pressure of the gas dissolved in the bottle. After filling the container, it is left open for some time 70 to equalize the gas pressure in its middle and outside, after which the container is closed and removed from the machine. 15.10.82). The described method of bottling is accepted as a prototype of the proposed one.

When pouring a carbonated liquid into a container, the rate of pouring is limited by the time required to maintain the required degree of saturation of the liquid with gas. It is known that the amount of gas that comes out of the liquid during pouring depends proportionally on the speed of pouring: the higher the speed of pouring, the more gas comes out of the liquid during the filling of the container and the equalization of gas pressures in its middle and outside (the so-called "boiling" of the liquid, which is saturated with gas). To some extent, the release of gas from the liquid is reduced due to the creation of the above-mentioned back pressure. But, with an increase in the pouring speed, even in the presence of back pressure, the gas exit from the liquid is quite intense. For example, it was found that when the duration of pouring a bottle with a capacity of 1.5 liters from 30s to 15s was reduced, under the conditions of a back pressure of 0.03 mMPa less than the pouring pressure, the mass fraction (MD) of carbon dioxide in carbonated water decreased from 0.56 up to 0.45 g/l, that is, by 20905.

High losses of saturation gas not only lead to a deterioration in the quality of carbonated water or a drink, but also significantly increase the cost of production. But maintaining the required MD value of the saturation gas due to enduring a significant duration of filling the container with carbonated liquid limits the productivity of the bottling process. The possibility of increasing the productivity of the process due to the increase of the pouring heads is also limited by the permissible dimensions of the machines.

The basis of a useful model is the task of creating such conditions for the bottling process of carbonated liquids, under which, with a sufficiently high speed of pouring, the degree of saturation of the liquid with gas in the container would remain sufficiently high after its filling and capping. By reducing the duration of pouring, it is possible to significantly increase the productivity of the process by 30 without increasing the number of pouring heads, and by reducing the output of gas from the liquid, its losses can be reduced.

To solve the given problem in the method of filling carbonated liquids in a container, which includes the operation of filling under pressure a liquid pre-saturated with gas simultaneously with the formation of back pressure in the container by supplying saturation gas to its middle under a pressure lower than the filling pressure and equalizing the pressures inside and 32 outside the container by releasing a portion of gas from it, according to the useful model, after pouring and before equalizing the pressures inside the container and outside, the liquid in the container is subjected to a short-term pneumatic effect by supplying the middle of it with saturation gas under pressure, the value of which is 1.2. .2.9 times greater than the value of the pouring pressure, and the duration of the effect is 1...7s. "

In particular, at a filling pressure of 0.2..:0.39 MPa, it is advisable to take the back pressure value by 0.01...0.03 MPa C 70 smaller than the filling pressure value, the value of the saturation gas pressure during a short-term pneumatic impact ("pneumatic shock") take within 0.35...0.65MPa, and the duration of exposure - 1.5...6.5s.

From" It was found that when applying the mentioned "pneumo blow", the intensity of gas release from the liquid immediately after filling the container is significantly muffled. In the proposed method, the total duration of filling (Tsum) of one container consists of the duration of liquid pouring (Tnal), the duration of pressure equalization (Tvyr) of gas 45 inside the container and outside, and the duration of pneumatic impact (Tpu): Tsum-Tnal-Tvyr«Tpu. Thanks to the mentioned - muting of gas exit from the liquid during "pneumoshock", despite the fact that in the known method "pneumoshock" 4! absent and Tpu-0, it is proved that the total duration of filling in the proposed method is significantly less.

For example, it was found that when water saturated with carbon dioxide is poured into a bottle with a capacity of 1.5 liters Tsum at a given MD gas saturation (0.56 g of CO" per 1 liter of water) is 1.4...1.6 times less when proposed - 0 than the known method, without the implementation of "pneumoshock".

Reducing the total time of filling the containers allows to increase the productivity of the process, and also, despite a certain consumption of gas for the implementation of "pneumo-strokes", to reduce its total losses.

The attached drawing shows a block diagram of the implementation of the proposed method.

The method is carried out as follows.

A liquid saturated with carbon dioxide or another gas, water for rinsing containers 1 and saturated gas enter the container through the liquid supply line 2 and the gas supply line Z to the filling head 4. Lines 2 and Z are connected to the hydrogas distributor 5.

The latter is connected: with tank 6 for water for rinsing containers - main lines 7 and 8; with a tank 9 with compressed air 60 for treating containers 1 after they have been rinsed - a main line 10. Tube 11 serves to remove air from the containers; with saturator 12 - line 13 and tank 14 with compressed carbon dioxide or other saturation gas - gas supply lines 15 for creating pressure when pouring liquid and 16 - for pneumatic impact. because Tube 17 serves to release excess gas during the equalization of gas pressures in the filled container and the external environment. Pressure gauges 18 and non-return valves 19 are installed on main lines 7, 10, 15 and 16.

After placing the container at the filling position and carrying out preparatory operations - filling the container with rinsing water and compressed air and releasing it - the filling process begins. At the first stage, a liquid previously saturated in the saturator 12 is fed into the tank through lines 13 and 2 under a pressure of Pnal--0.2...0.3MPa. At the same time, through lines b and З into the tank under a pressure of Rpr, the value of which is 0, 01...0.05 MPa lower than

Rnal, saturation gas is supplied to create back pressure. The filling of the container begins. Value (Rnal -

Rpr) determines the rate of pouring.

After filling the tank with the help of the hydro-gas distributor 5, the main line C is switched to the 7/o tank with carbon dioxide (or other saturation gas), from which the gas comes under a pressure of 1.2...2.9 times higher than at the previous stage, within 1...3 seconds. This is the mentioned short-term pneumatic impact on the liquid in the container, or "pneumoshock".

Then excess gas is released through line C and tube 17 for several 1...3s, thereby equalizing the pressure inside the container with the pressure of the outside space. After that, the container is closed and removed from /5 machine.

During comparative tests of the proposed and known (accepted as a prototype) methods, bottles with a capacity of 1.5 liters were filled with water pre-saturated with carbon dioxide in the saturator. The test parameters were as follows: amount of pouring pressure (Pnal) - 0.2...0.5 MPa; the amount of back pressure (Rpr) - 0.1...0.4MPa; pressure value of "pneumoimpact" (Rpu) - 0.23...0.85 MPa; duration of pneumoconvulsion (Tpu) - 1...8s; duration of pressure equalization inside and outside the container (Tvir) - 1...4s; water temperature - 6...126.

Liquid saturation with a mass fraction of MD-O, 56 bg/l was taken as the norm. The total duration of filling for the compared methods Tsum-Gnali-Tvir"Tpu. At the same time, for the known method Rpu-O, Tpu-0. t

With the proposed method, the normative MD CO" was achieved at Tsum-20...25s with various combinations of parameter values, which were adjusted within the above limits. For the known method, the specified MD CO 5 was reached in 32...35s. Gee!

Claims (2)

"- Formula of the invention of co 1. The method of pouring liquids in a container, which includes operations of pouring under pressure pre-saturated with gas and) 35 liquid simultaneously with the formation of back pressure in the container by supplying saturation gas to its middle under a pressure "- less than the filling pressure, and equalizing the pressures inside and outside container by releasing a portion of gas from it, which differs in that after filling and before equalizing the pressures inside the container and outside, the liquid in the container is subjected to short-term pneumatic influence by supplying the inside of the container with saturation gas under pressure, the value of which is 1.2-2.9 times greater than the value of the pouring pressure, and the duration of the effect is 1-7 s. " 2. The method according to claim 1, which differs in that at a filling pressure of 0.2-0.03 MPa, the value of the back pressure with c is taken 0.01-0.03 MPa lower, the value of the pressure of the saturation gas during short-term pneumatic influence is taken within 0.35-0.65 MPa, and the duration of exposure - 1.5-6.5 seconds. z - 1 (95) - 50 3e) c 60 b5