DE1532516A1 - Filling and weighing device for containers, especially liquid gas bottles - Google Patents

Description

I) H. IN (JK WtJKSTHOKF DlPI ,. INCAl. PULS »HKvPKCHMANN

I'ATKNTA.VWil.TE

Honor to the patent application

Establishments R.M. Buzancais (Indre, France)

concerning

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Filling and weighing device for containers, in particular liquid gas bottles.

The invention relates to the controlled filling of various types of containers, in particular of Cylinders of liquefied gas.

"Controlled filling" means filling in which the weight of the filled container is precisely set to a predetermined value and the filling is stopped as soon as this value is reached is.

909883/0171

1S32516

It is known that in the most modern mesh filling systems for pressurized gas in milling and / or liquid Form e.g. commercial propane or butane, filling the bottles on a round turntable with a certain number of bottle positions takes place, whereby the bottles Ln a Beschici: ur% ": jstation successively get on the turntable and after a certain rotation of the table, preferably a little less than a full turn, be handed in at a delivery station.

In addition, other systems Fu 1: ^r ~ ebräuch Lich, eg devices with straight Förderbewe-

In all of these systems, scales are provided on the bottle stator, for example ! The bottle is open and immediately after it has reached Langt on the turntable, it is connected to a pressurized gas delivery device by means of pliers, the so-called "filling or filling pliers". Then the bottle

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BATHROOM QRiSI

Gas supplied and this vviro filled the table during the circulation. If the balance corresponds to the pre-set filling amount. ^r 3 isplays weight of <^, filling v.ird automatically terminated uiiu the filled bottle to Abgabestati on veiterbefüruert.

The known systems have the disadvantage that u; ji the application of α er bottles on the n'aage boards, their Delivery and, in general, all operations that the bottles after it has been applied to the platform v / earth, cause vibrations and btöjie, v / elche for the scales and especially for their operational ones Parts, e.g. the edges, extraordinarily true are.

The invention aims to obviate these disadvantages and relates to an installation for pulling Gas bottles especially the design of the filling tongs.

According to a first feature of the invention are at a conveyor in the form of a turntable, which a certain number of scales for the controlled filling of Gas bottles and a dispenser with filling tongs included on the panels on the scales Attack bottles, the wa; .igen with a device for the lifting of the! afein equipped, through the sensitive Parts <i ».. r scales, especially the .Cutting relieved be, and r.v; ar j ns special outside the

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ib 3 2 & 16.

Weighing times while placing the bottles on the turntable and while dispensing the bottles.

According to another feature of the. Invention is in a device of the type mentioned, each bottle or station is assigned an actuation system which on the one hand after putting on the bottle

a) switching on the associated scale,

b) the closing of the associated filling tongs with simultaneous or immediately subsequent Supply of gas,

and on the other hand, after completion of the filling of the bottle

a) switching off the balance,

b) opening the filling pliers and interrupting the gas supply and

^c) (optionally ·) d ^a s discharging the bottle

causes.

In a preferred embodiment of the invention, the supply system Press shutter i for each filling station is a hydraulic or pneumatic system whose. Activation depends on the position of the balance beam or the movable lever arm of the associated balance.

909883/0 171 - b

ORIGlMAL BATHROOM

According to a further development of the invention, the pneumatic or hydraulic system comprises for each filling station, a low pressure circuit (e.g. a pressure ■ air circuit with a pressure of a few hundredths of an atmosphere), which is actuated by the position of the balance beam and a high pressure circuit (e.g. a compressed air circuit with a pressure of a few atmospheres), which in turn is controlled by the low-pressure circuit and various Control devices operated.

The invention further comprises a hydraulic or pneumatic, the aforementioned hydraulic or filling tongs adapted to pneumatic systems.

The invention is illustrated in the following with the aid of a schematic Drawings on an exemplary embodiment in more detail explained.

Pig. 1 shows a plan view of part of a Turntable according to the invention for controlled filling of gas bottles, the multiple filling and weighing stations which has bottles;

Fig. 2 shows the details of a schematic Filling and weighing station;

Fig. 3 shows a section through filling tongs shows with which each filling station of the turntable is equipped. 909883/017 1 bad OBiSi ^ '-

In the illustrated embodiment the invention isb the turntable according to Fig * 1 round and rotatable with the help of a conventional drive in the direction of the arrow IQ. About the perimeter of the table stations Pl, P2, P3 etc. are evenly distributed for controlled filling. Each filling station includes connections for the filling gas and for Compressed air coming from an annular gas supply line 11 and two ring lines 12 for compressed air ■ (one high pressure and one low pressure) to be delivered. .

The bottles are placed on the turntable by a ..... · automatic loading device 20 is supplied and discharged by a discharge device 30.

Each bottle filling station comprises according to FIG a scale 1, the table of which la the bottle B about orphans Ib is supplied. The panel la can be lifted with a piston-driven lifting device 2: - ■ whereby the cutting Ic. be relieved. If the When the balance is in operation, the balance beam id pivots off (this balance beam is actually connected to the balance; the drawing is easier to understand to do it is at the same time in the upper part of Fig.

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shown to its relation in the pneumatic Circle to show). The balance beam can be adjusted with a running weight Ie so that it at a target value determined by the barrel weight, the amount of filling (weight of a filled bottle), assumes its horizontal position.

With 3 a piston-cylinder device is referred to, which the dispensing device for Forms bottles. ..- ■■■

With k a pneumatic filling tongs is designated, which will be described more fully below.

With 5 is a line 5a with the Pliers 4 connected pneumatic control valve for the supply of. Filling gas, designated. '

The fill system includes one labeled HP High-pressure circuit with distribution or control valves Dl, D2, D3, D ^ and D5 and a low-pressure circuit labeled BP, which is formed by a balance beam Id worn locking piece 0 is operated, which between two nozzles Dl and D2 are located in the low-pressure circuit BP,

BATH ORIGINAL

909883/017 1

if the balance beam is inclined to the right beyond the horizontal, as long as the weight of the Bottle and its contents remain below the prescribed value «In this way the balance beam is actuated the circuit BP, which in turn controls the circuit HP through a diaphragm valve Dl.

With ΓΊ a manual activation is possible to activate D2 designated. '

Cl and C2 make two fixed ones, not with the turntable connected cams that act on the valves D ^ or D5 act when a full bottle is in the Near the facility for dispensing the bottle in front of the dispensing station.

The operation of the device is as follows:

After an empty bottle B arrives on the scales 1, the worker attaches the filling tongs, presses the hand lever M to activate the system and, if necessary, sets the prescribed filling amount. The tong k is now under the pressure of both compressed air and filling gas. The line for actuating the lifting device 2 is blocked. The weighing process

909883/0171

BATH

runs normally because the balance is under load. This is the filling period.

During this period the breechblock breaks 0 of the balance bar Id. The passage of Air between the nozzles bl and b2 of the low-pressure circuit .

As soon as the bottle is filled, the balance beam gives Id the passage in its cast weight position free between the two nozzles bl and b2. The low-pressure circuit acts on the valve Dl, which; · opens the high pressure circuit to D3 and D ^. D3 acts on the valve 5, which interrupts the entry of filling gas.

When the turntable passes the cam Cl, which acts on D ^, D2 is pressurized. This The process causes the closing valve of the pliers 4 to blow off quickly through pneumatic control and sets the lifting device 2 under pressure. The pliers release automatically, the scale is relieved. The balance beam Id descends again to the right and the locking piece closes the low-pressure circuit again.

The bottle is now filled, weighed and approved. 909883/0 17 1

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The automatic dispensing of the bottle takes place when passing valve D5 in front of cam C2; the cam C2 controls the valve D5, which puts the ejector 3 into operation.

After the arrival of a new empty bottle begins the cycle all over again.

In the event that the bottle is not complete is filled, the corresponding cycle is extended by one rotation of the turntable. In fact, if the bottle has not been filled to the prescribed amount, the high pressure circuit on the downstream side of valves D2 and D3 not excited.

Likewise, if a bottle has not been dispensed, the device 20 for the automatic supply of the bottles is not activated. This device comprises a piston-cylinder device 20a, which the bottles via a roller arrangement 20b from a standby division designated _{by B 0 on the turntable}

a - ■

pushes. The piston-cylinder device 20 is through a fixed Tasfcer 20c put into action, -if a with the lifting device of the table of the scales of a filling station firmly connected stop 40 with the button in Touch comes; but this contact can only take place

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BATH ORIGINAL

when the scale platform is raised, i.e. only when the previous bottle has been pushed off the turntable. The feeding of the bottles into the Stand-by "takes care of a band 20dj one through a control button 2Of actuated retractable Bolzen 2Oe controls the feeding of the bottles »

^{The filling tongs 1} V , shown in section in FIG. 3 and provided at each filling station, closes as soon as it is placed under compressed air.

The pliers Λ include a cranked bracket 50, which is resilient at its end by a spring 51a supported stop 51 and at its other end a movable device 52 for the supply of Has gas »

The device $ 2 comprises an air cylinder 53 with an air inlet opening 53a. In the cylinder, a piston 5 ^ is guided, which is connected to a hollow piston rod 55, the. has two opposing lateral slits 56 '. Inside the hollow rod 55 , a valve rod 57 under the action of a spring 58 is arranged.

A extends through the two slots 56

with the valve rod 5? Fixed bolt 59. One

BAD ORiGiMAL

■ - 12 -

The spring 60 supported on a bushing 61 resists a displacement of the bolt 59 and the valve rod 57 in the direction away from the air inlet opening 53a. The piston rod ^ is connected to an injector housing 62 which forms a gas chamber and on which an injector 63 is attached, which forms a valve seat and has a seal 63a and a centering screw nut 63b. With the valve stem 57 _f, which is guided in a sealed manner in the injector housing 62, a conical valve body 6 ^ + is connected, which has a valve seal 6 ^ a; this valve body interacts with the injector opening which forms a valve seat. For the lateral introduction of the filling gas, a screw connector 6 ^> is used, which protrudes through a cutout 5Ga provided in the bracket 50, the length of which is sufficient to allow all displacements of the connector corresponding to the working cycle of the filling tongs.

The mode of operation of the pliers 4 is as follows:

At the beginning of the cycle, the shut-off valve between the stop 51 and the injector 63 of the bottle Pliers brought; the injector housing 62 is pressurized with gas filled and the tongs take the. position shown in Fig. 3 a. Compressed air is introduced into the cylinder 53 through the opening 53a. In a first period of time

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■ ..- ■ - 13 - ■■ -; _

the construction 54, 55, 57, 59, 62, 63 and 65 pushes against the action of the spring 60 towards the resilient stop 51. With this movement the mouth lies down. piece of the shut-off valve of the bottle hermetically against the seal 63a.

Towards the end of this common forward movement, the spring 51a is tensioned and the stop 51 is pushed back resiliently; this effect of the "compensating guide" improves the clamping of the bottle filler tap. The joint movement ceases when the pin 59 abuts ^against a fixed sleeve 66th In a second period of time, the piston 54 advances further and, with the compression of the spring 58, takes the injector housing 62 and the injector 3 with it, while the shaft 57 and the valve 64 remain in place. Thereupon the injector 63, which is no longer closed by the valve 64, opens and the filling of the bottle begins. When the edge 56a of the slots 56 comes into contact with the bolt, the largest opening is reached. The closing of the injector and opening of the pliers take place in the opposite direction when the supply 33a of compressed air is interrupted.

• The erfindungsgemäSe "balancing guide ¹¹ and the structure of the pliers, in which the movement fiir the clamping of the filling tap necessarily the opening of the injector

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precedes, has the effect that the gas loss remains extremely low with each filling.

The invention is not limited to the embodiment described, but also includes all other analogous embodiments. In particular Instead of the pneumatic actuation described, hydraulic or electrical actuation can be used the device may be provided.

₅₆₂₄₉₈ claims

909483/0171

Claims (7)

LA-31 Ö86 claims 1. Filling and weighing device for the controlled filling of bottles, in particular gas bottles, with a conveyor system with a number of RiLI stations, Each of which has a filling tong fed with the liquid or gaseous substance to be filled and a scale has, on the board of which a bottle to be filled is applied, characterized in that that each scale (1) a device (2) for lifting the scale board (la) is assigned by the sensitive Parts of the scales, in particular the cutting edges, preferably outside of the weighing times during application each bottle (B) on the conveyor and during the discharge of the bottle can be relieved. 2. Apparatus according to claim 1, characterized in - that the conveyor is a rotary table. 3 · Device according to claim 1 or 2, characterized in that the filling stations (Pl, P2, P3 .....) each have an actuation and control device is assigned, which in each case after a bottle (B) has been fed in, the switch-on of the associated scale (1) - 2 S09883 / 0171 and closing the associated filling tongs (4) below caused simultaneous or immediately subsequent supply of the filling gas and each after completion of filling the bottle, turning off the scales, that The opening of the filling tongs and the interruption of the gas supply as well as, if necessary, the ejection of the bottle causes. 4. Apparatus according to claim 3, characterized in that each actuating and Control device depending on the position of the balance beam (Id) or the movable lever arm of the or associated scale controlled hydraulic wmL pneumatic Establishment is. · 5. Apparatus according to claim 4, characterized in that each hydraulic or pneumatic control device a low-pressure circuit (BP) controlled by the balance beam (Id) and a high- (HP)
includes pressure circuit, which is controlled by the low pressure circuit and controls various actuating cylinders (2, 3). 6. Device according to one of claims 1 to 5 _t, characterized in that each filling station (Pl, P2, P3 ...) comprises a device (30) for ejecting the bottles (B). - 3 -909883/0171 7. Advantage according to one of claims 3 to 6, characterized in that one jaw of each filling tong (k) is a mouthpiece (63) which cooperates with the filling opening of the bottle (B) and is connected to a gas line and from a compressed air piston (3 ^) can be moved in the direction of the second jaw (51), which is resiliently supporting the bottle, whereby a movement of the mouthstick towards the second boke that goes beyond a certain amount creates a valve that controls the gas flow through the mouthpiece against the action of a spring ( 58) is opened. 5 ^ 98 90 9883/017 1 Empty soap