SK50392006A3 - Method for bottling gas bottles, device for bottling and bottle filled with gas - Google Patents

Abstract

Method for filling bottles with gas, in which first a closure is mounted on a bottle neck and, with a closure untightened, the bottle is filled by the action of external gas overpressure, especially through grooves in the thread part of the bottle neck. After the bottles are filled, the closure is tightened while the gas overpressure is still acting. The device for filling bottles with gas consists of a tube body (3) with a flexible seal end (4). The bottle neck (6) is placed with attached but still untightened closure (9) into the orifice of the filling nozzle (1), whereby the flexible seal end encircles a board (5) of the neck (6), but concurrent it makes possible for another movement of the neck (6) inside of the filling nozzle (1). The bottle filled with compressed gas is permanently sealed with a closure, the gas pressure within the bottle being at least 1 kPa. The bottle has a high stiffness and strength and can be used in structural components as a supporting element.

Description

Gas filling method, filling device and gas-filled bottle

Technical field

The invention relates to a method of filling PET bottles with compressed gas, to an apparatus for carrying out this method and also describes a PET bottle filled with compressed gas, which is permanently closed especially for use in building elements.

BACKGROUND OF THE INVENTION

The plastic bottles used, especially PET bottles, which are used in bulk for the packaging of beverages and other food liquids, constitute bulky and problematic waste. In the conventional treatment of the bottle as a source of secondary raw material, only a small weight yield is obtained, since the plastic bottles have a relatively low weight. There are already ways of using these bottles, which do not crush to the basic raw material but use the bottle as a whole. It is known to use PET bottles in building elements according to the application of the invention SK PV 1053-2001, where these bottles are embedded in a concrete mixture and thus form a substantially lost core. In this solution, PET bottles are filled with liquid, mostly water, to achieve sufficient stiffness, but which substantially increases the weight of the whole and causes further technological complications.

In the solution according to UV SK 3883, 3884, PET bottles filled with compressed gas are used, which, at a negligible weight, give the bottle a high strength. Thus, the original feature of the PET bottle is used, whose rigidity and strength is ensured by the overpressure of gases or vapors from the beverage in the bottle. A method or apparatus for filling used PET bottles with compressed gas while still being able to be permanently closed with the previously used lids has not yet been described.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are substantially eliminated by the method of filling the bottles with the gas according to the invention, which consists in that the bottle neck is first fitted with a cap and the bottle is filled when the cap is not tightened. Filling takes place by the action of i

external gas overpressure around the neck and / or around the cap and the gas passes through grooves in the threaded portion of the neck and / or through the gaps between the cap and the neck. After the bottle has been filled with gas overpressure, the cap is tightened. In order to improve the sealing properties of the closure, it is suitable that the sealing surface of the closure is provided with an adhesive and / or sealant before the closure is fitted to the neck.

The drawbacks of the prior art are substantially eliminated by the gas filling apparatus of the present invention, which comprises a filling nozzle consisting of a tubular body with a resilient sealing end. The resilient sealing end serves to seal the neck flange which is inserted into the mouth of the filling nozzle. The neck of the bottle with the cap attached, but not tightened, is inserted into the mouth of the filling nozzle, while the resilient sealing end encircles the neck of the neck, but at the same time allows the neck to move further inside the filling nozzle. The threads on the bottle neck are interrupted by a number of grooves, the original function of which is to open the internal pressurized bottle to escape gas from the bottle before the cap is completely unscrewed, otherwise the cap may be fired dangerously. The grooves in the threaded portion of the neck allow the pressurized gas to penetrate into the bottle when filling with the device of the present invention with the cap closed but not tightened. The original technical function of the PET bottle neck construction is used, but in the opposite direction of the gas flow.

Inside the tubular body there is a retaining ring into which the bottle cap is retained after partially filling the bottle. The bottle is moved further into the interior of the filling nozzle, thereby locking the bottle cap rotatably. The retaining ring is divided by a splitting groove or is provided with at least one flow groove on the inner or outer circumference. The grooves allow the compressed gas source, which is connected to the filling nozzle, to penetrate the compressed gas into the space of the flexible sealing end and fill the bottle until the cap is fully tightened. When the retaining ring is divided by a separating groove, it has the shape of an open C profile, which increases the flexibility of the retaining ring. This then allows the insertion of closures of different manufacturers, where the actual diameter of the closures is usually within a certain tolerance. For better rotational locking of the closure, the inner opening of the retaining ring may be conical.

In a preferred embodiment, an elastic reinforcing ring is provided on the outer periphery of the elastic sealing end, which reduces the stress and wear of the elastic sealing end while being easily replaceable.

To simplify the manufacture of the gas bottle filling device, it is advantageous if the tubular body and the flexible sealing end are formed by a rubber hose, into which a retaining ring is inserted at the location of the fastening clip. By clamping the fastening clip, a fixed rotary connection of the retaining ring in the filling nozzle is ensured.

In a preferred embodiment, the retaining ring is made of metal and is provided with a regular groove on the inner surface to increase adhesion with the cylindrical surface of the closure which is inserted inside the retaining ring.

The bottle filling device can be designed to efficiently fill and close the bottles so that the filling nozzle is mounted on a table on which the rotary mechanism is also attached. The rotary mechanism is adapted to rotate the bottle, whereby the bottle is closed when the lock is rotatably locked. The relative position of the filling nozzle and the rotating mechanism is displaceably variable so that the bottles can be pushed and pushed into the mouth of the filling nozzle at a constant pressure and rotation of the bottle. To achieve this, the rotating mechanism on the output shaft is provided with a shaped disc that fits into a typical bottom of a PET bottle. To achieve mechanized rotation, the rotary mechanism is formed by an electric motor with a gearbox.

The filler nozzle may have a throat insertion sensor into the mouth of the filler nozzle, thereby allowing controlled opening of the compressed gas valve and / or triggering the rotation of the rotary mechanism.

In a preferred embodiment, the table is provided with control of the compressed gas valve, control of the rotary mechanism, and has a bottle cap. The safety cover prevents injury to the operator if the bottle is torn.

The essence of a cylinder filled with compressed gas, especially for use in building elements, is that it is permanently closed by means of a closure, wherein an adhesive and / or sealant is applied between the closure and the neck of the bottle and the gas pressure in the bottle is at least 1 kPa. Such a bottle has high strength and stiffness and can be used as a supporting element in building elements. The adhesive and / or sealant is applied to the top of the neck, usually by shallow immersion in the prepared adhesive and / or sealant, prior to the cap being inserted and inserted into the filling nozzle. After the cap has been fitted, the bottle neck is inserted into the mouth of the filling nozzle and the compressed gas valve is opened. Gas penetrates into the cylinder through breaks in the threaded portion of the neck. After reaching the desired pressure, the cap is tightened by turning the bottle, the pivot mechanism is pushed away from the filling nozzle and the bottle is ejected from the mouth of the filling nozzle.

To increase fire resistance, the bottle can be filled with carbon dioxide.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail with reference to FIGS. 1 is a cross-sectional view of the filling nozzle prior to insertion of the bottle neck; FIG. 2 is a cross-sectional view of the filling nozzle with the bottle neck inserted.

Figure 3 is a view of the mouth of the filling nozzle.

Figure 4 shows a table with a rotating mechanism.

Example

The gas filling apparatus of Figures 1 to 4 comprises a filling nozzle 1 connected to a compressed gas source 10 consisting of a compressor with an air dryer and a pressure vessel. Further, the device comprises a table 12, a pivot mechanism 13 with a shaped disc 14 and a safety cover 15.

The filling nozzle 1 consists of a tubular body 3 with a flexible sealing end 4, the tubular body 3 and the flexible sealing end 4 being formed by one piece of a rubber hose.

Inside the hose there is a steel retaining ring 2, which is divided by a separating groove 17. The separating groove 17 passes obliquely through the surface of the retaining ring 2 and divides it into an open C-shaped profile. The retaining ring 2 has two flow grooves on the outer circumference. parallel to the axis of the retaining ring 2. The retaining ring 2 is pressed into the hose at a location where the fastening clamp H is clamped from the outside of the hose. By clamping the retaining clamp 11, a fixed rotary connection of the retaining ring 2 is secured in the filling nozzle I. also change the inner diameter of the retaining ring 2, thereby allowing wear of the inner surface of the retaining ring 2 to be shown.

The retaining ring 2 has a regular grooving on the inner surface which corresponds in height and spacing to the grooving 9 of the PET bottle cap 7.

The filling nozzle 1 in this example is mounted on a metal table 12 on which the rotating mechanism 13 is also attached. The rotating mechanism 13 is located on sliding linear guides so that the bottles 7 can be pushed and pushed into the mouth of the filling nozzle 1 at constant pressure and rotation. The rotary mechanism 13 has a disc 14 on the output shaft with five protrusions that correspond to the bottom shape of the PET bottle 7. The rotary mechanism 13 is formed by an electric motor with a worm gear.

The table 12 is provided with foot control of the compressed gas valve, manual control of the rotary mechanism 13 and has a transparent safety cover 15 of the filled bottle 7.

The bottle 7 filled with compressed gas, in particular for use in the building elements according to this example, is filled with dry compressed air with an overpressure of 3 kPa. The bottle 7 is permanently sealed by means of the previously used closure 9, wherein between the closure 9 and the neck 6 of the bottle 7 an adhesive and sealant consisting of a liquid neon-adhesive adhesive is applied. In another example, the pressurized gas source 10 may be a carbon dioxide pressure vessel. A bottle filled with carbon dioxide increases the fire resistance of the building component in which it is used. In the event of a fire, the temperature rises and carbon dioxide leaks.

Industrial usability

Industrial applicability is obvious. According to the present invention, devices for filling PET bottles with compressed gas can be manufactured industrially, and it is possible to industrially produce PET bottles filled with compressed gas and permanently sealed primarily for applications using the rigidity of the pressurized bottle.

Claims (12)

PROTECTION REQUIREMENTS Method for filling gas bottles, in particular used PET bottles with compressed gas, characterized in that a cap (9) is fitted on the neck (6) of the bottle (7) and when the cap (9) is not tightened. fills around the neck (6) and / or around the cap (9) through grooves in the threaded part of the neck (6) and / or through the gaps between the cap (9) and the neck (6) and after filling the bottle (7) of gas, tighten the cap (9). Method for filling gas bottles according to claim 1, characterized in that the sealing surface of the closure (9) is provided with an adhesive and / or sealant before the cap (9) is fitted on the neck (6). Device for filling bottles, in particular used PET bottles with compressed gas, characterized in that it comprises a filling nozzle (1), which consists of a tubular body (3) with a flexible sealing end (4) for sealing the flange (5) of the neck (6) inserted into the mouth of the filling nozzle (1), wherein a retaining ring (2) is provided inside the tubular body (3) for rotationally engaging the closure (9), the retaining ring (2) is provided with a separating groove (17) and / or or an outer circumference provided with at least one flow groove (8) and the filling nozzle (1) is connected to a source (10) of compressed gas. The gas bottle filling device according to claim 3, characterized in that the tubular body (3) and the resilient sealing end (4) are formed by a rubber hose into which a retaining ring (2) is inserted at the location of the fastening clip (11). The gas bottle filling device according to claim 3 or 4, characterized in that an elastic reinforcement ring (16) is provided on the outer periphery of the flexible sealing end (4) and the inner opening of the retaining ring (2) is conical. PP fO19 ~ 0i IN A gas filling device according to any one of claims 3 to 5, characterized in that the retaining ring (2) is metal and is provided with a groove on the inner surface for increasing adhesion with the cylindrical surface of the closure (9) inserted into the retaining ring (2). ). A gas filling device according to any one of claims 3 to 6, characterized in that the filling nozzle (1) is mounted on a table (12) on which the rotary mechanism (13) for rotating the bottle (7) is fixed, the position of the filling nozzle (1) and the rotating mechanism (13) is displaceably variable. The gas filling device according to any one of claims 3 to 7, characterized in that the rotary mechanism (13) is formed by an electric motor with a gearbox and a shaped disc (14) for receiving the bottom of the bottle (7) is arranged on the output shaft. The gas bottle filling device according to any one of claims 3 to 8, characterized in that the filling nozzle (1) has a sensor for insertion of the neck (6) into the mouth of the filling nozzle (1). A gas filling device according to any one of claims 3 to 9, characterized in that the table (12) is provided with actuation of the compressed gas valve, actuation of the rotary mechanism (13) and has a safety cap (15) for the bottle (7). A bottle filled with compressed gas, in particular for use in building elements, characterized in that it is permanently closed by means of a closure (9), wherein adhesive and / or sealant is applied between the closure (9) and the neck (6) of the bottle (7). and the gas pressure in the bottle (7) is at least 1 kPa. W Mld-tl A bottle filled with compressed gas according to claim 11, characterized in that the gas in the bottle (7) is carbon dioxide.