DE2128780A1 - Filling valve - Google Patents

Description

Filling valve

The invention relates to a filling valve for filling a Container «with a liquid, with a valve housing / on which is arranged with a filling pipe which dips into the container during filling, with a pipe provided with a shut-off valve. Inlet line for the liquid to be filled into the container and with an outlet line provided with a shut-off valve for the gas displaced from the container by the inflowing liquid, the inlet line and the outlet line run at least partially in the valve housing.

In the known filling valves, the rising of the liquid filled into the container at the end of the filling process terminated by a shut-off device with a float valve, the float of which is located in a chamber, which is arranged generally at the lower end of the conduit, through which it is originally placed in the container prior to filling contained gas escapes or through which the container is pressurized.

In many types of conventional filling valves, the float of the float valve is in a Float chambers formed expansion of the lower end of the filling tube, the axial passage as a gas discharge line or serves as an overpressure line. The float usually rests on you under the action of gravity lower seat of its float chamber and is raised by the liquid that is released at the end of the filling process fills the container, or by means of its foam, this causes the float valve part against an upper seat the float chamber and closes in this way the drain line or the overpressure line. Now that the in the gas remaining in the container can no longer escape, as a result this gas forms a gas cushion in the

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container that cooperates with the filling valve to seal the same. Such a gas cushion slows down and stops the "setting of the liquid level in the container.

The well-known filling valves, in which the drain or the

Overpressure line is provided with a float valve, have disadvantages . -

These bekaaatea filling valves are "-? © gs-a of the provision of a special Seirwiirffiierkasii & er for the- Schvvimservsrrc-il MltaisiaS that's aBf ^ enfiig built =. ■ Furthermore," ase filling- © iaa hätafi ^ ® Maintenance a nnclehs P. because

'"kairaaer ®ißs Bs? utstafet, s for Sakt- @ r;". en ast, wss eich o'Z'c sciiääilen on the durability, äsr βχΐίτϊΦίΞ'ΰ.ΙΙϊ.® »Liquidksl'ü süis ° works» The aging of these ScriJiiffiaerkaiaraer is aaagsl • a good suggestion sia your selir difficult. KiaSsräetü gewährleistoß this Püllventile ksine constant filling height of the filled in dl © reservoir fluid, especially in the case where the liquid in question a gas · solved

then occurs because the Schwinauer valve works differently as a result of the / foam formation on the liquid filled into the container.

The invention is based on the object of creating a filling valve which avoids the above-mentioned disadvantages of the known filling valves.

This object is achieved in a filling valve of the type mentioned according to the invention in that an electrical circuit for the actuation of the shut-off valve Supply line and / or the shut-off valve of the drain line and a circuit element that responds when the liquid level rises to a specified level is provided = · hen are. Such a filling valve is of simple construction and

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has "only one stationary element, υ. ™ the filling level to effectively control the liquid filled into the container to be filled. This element is not subject to wear and tear and does not require maintenance. The filling valve according to the invention is characterized by a uniformly accurate Work and get results through consistently good results. In addition, it allows the filling speed to increase significantly under otherwise equal circumstances. For example, in the case that mineral water is filled into normal bottles without excess pressure, with a filling valve according to the invention a filling time of 4 sec achieve compared to 9 seconds with conventional filling valves, namely with 1-liter bottles.

The liquid acts on the circuit element and via this on the electrical circuit in order to achieve the To close the shut-off valve of the supply line and / or the shut-off valve of the drain line securely when the rising in the container Liquid has reached a specified fill level. This can cause the liquid to rise in the container be ended at the end of the filling process.

The liquid can act on the electrical circuit in a closing or opening sense.

In a preferred embodiment of the filling valve according to the invention it is provided that before completion of the filling process the inlet line and / or the outlet line is only partially and then completely shut off. That way it becomes Rising the liquid level in the container in advantageous Way, slows down first before it stops entirely.

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According to an advantageous embodiment of the invention, a control valve is preferably used to slow down the filling process a needle valve with an adjustable valve needle is provided, which is arranged in a bypass that is on both sides of the shut-off valve of the supply line is connected to this or the two sides of the shut-off valve of the discharge line is connected to this. The adjustment valve can also be arranged in a line pointer that is in front of the shut-off valve of the drain line branches off from this. That Adjustment valve can be controlled by the electrical circuit or it can be adjustable independently.

In a very advantageous embodiment of the invention it is provided that the circuit element has a first electrode which is electrically isolated from the valve housing. This electrode extends with its lower end during a filling process at least up to the specified filling level in the to be filled container down, so that when the liquid rises up to the filling level and thus to the lower end of the electrode the electrical circuit performs a switching operation.

The filling tube is preferably provided as the second electrode of the circuit element with which the first electrode cooperates to trigger a switching operation of the circuit / as soon as it rises from the in the container Liquid is touched. The first electrode can be inside the Füilrohres, preferably coaxially to this, be arranged. However, it can also be arranged outside the filling tube or also electrically insulated on the filling tube be. The electrode can be designed as a metal rod, as a metal strip or as a metal wire. About droplet formation

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Preventing the liquid between the first electrode and the fill tube is the lower end of the first electrode connected to the filling tube by an intermediate piece, which is essentially annular in cross-section and electrically Is designed to be insulating and has an upper conical surface which widens from top to bottom, so that the Outflow of the liquid downwards is facilitated.

The electrical circuit expediently has at least one control device with a first setting potentiometer, a delay relay with a second setting potentiometer, a micro control switch and an electromagnetic switching relay to first control the setting valve and then the shut-off valve of the inlet line and / or the outlet line. The first setting potentiometer is expediently adjustable as a function of the electrical resistance of the liquid to be filled in, so that the electrical circuit can be set to this resistance.

The invention is in the following description one in the Drawings illustrated Äusführungsbeispieies explained in detail.

Show it:

Fig. 1 shows a vertical section through a filling valve according to

the invention;
FIG. 2 shows the filling valve according to FIG. 1 together with its

electrical circuit

A filling valve 1 is used to fill a liquid, in particular mineral water, into a container shown as a bottle 2. The mineral water to be filled is contained in a storage container 3 and is from there several equal

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chen filling valves 1 supplied to through this in successive Bottles 2 to be filled.

The filling valve 1 has a valve housing 4 as an essential component, which is provided with a filling tube 5 and with a centering bell 6 is provided.

'The filling pipe 5 is double-walled and has SWEi coaxial tubular pieces 7 and 8 on _f "Si © after srstrek down = - ken * .The ismer® pipe piece 7 erstxsoixt at' ~ oh sis Boh üe.s estilg ¥ © b .äi2ses 4 through imä is In c-ass-iLi e & eirszrj T ^ i attached by eiacaia holder S _β fes Enßars Bci: j s': £ l & :, Q ^ Bs = gifct the iaaeri Ftohrstück? below "des? s :: ^ ilfe: iEti32s 4 iiaö is as clsssiBs jsateresft part -lur-rh sin® Hsl-i ^ nraffs 13 be

The iniisro Eolirstüek 7 has no lateral © Bölir ^ ngea ar & f its goose length, whereas the outer®? .Ohrstück asitsn QuerboIiruE.g © n 11, which are regularly distributed on ■ £ ©:% itefaag of the filling pipe 5 »

The lower ends of the two Rohrs.tücke 7 ηηά 8 rles Friiirrtbr ^ s 5 are advantageously kept at a distance from one another by an intermediate piece 12. This intermediate piece has an annular cross-section and is electrically insulating, the intermediate piece "12 xtfeist an upper conical surface 13 _S which expands from top to bottom.

The centering bell 6 is threaded on the valve housing 4 attached. This centering bell 6 carries a seal 14, which the outer pipe section 8 of the filling pipe 5 with a certain surrounding radial play.

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In the filling position, the upper edge 15 of the bottle 2 is pressed against the seal 14 of the centering bell 6. This will be the bottle 2 and the filling valve 1 sealed against each other.

The filling valve 1 is connected to the reservoir 3 through a feed line 16 connected into which an electromagnetic shut-off valve 17 is inserted.

The shut-off valve 17 has a valve housing 18 in which a closing piece 19 is arranged so as to be vertically movable. That Closing piece 19 is connected to the core of a magnetic coil or excitation coil 22 via an actuating rod 20. That Closing piece 19 cooperates with a valve seat 23 in order to close the electromagnetic shut-off valve 17 or it to open, and is pushed in the valve housing 18 under the action of a return spring 24 upwards and against it Effect down. '

in

The filling valve 1 is / in the same way provided with a device, through which the bottle 2 is in the filling position with the outside air or the environment. This device has a drain line 25 which is provided with an electromagnetic shut-off valve 26. The latter shows a valve housing 27 in which a closing piece 28 is vertically displaceable and pressed against a valve seat 29 can. The striker 28 is arranged on an actuating rod 30, which is connected to the core 31 of a magnetic coil or excitation coil 32 is firmly connected. The striker 28 is under the action of a return spring 33 upwards pushed and down against their force. Between the filling valve 1 and the shut-off valve 26 is from the drain line 25 a pipe socket 34 branched off laterally. This pipe

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nozzle 34 is in turn provided with a needle valve 35, whose inner passage cross-section is adjustable for the passage of gases. The adjustment valve 35 has essentially an adjusting screw 36 which is screwed into an internally threaded holder 37 which is attached to the pipe socket 34 is attached.

During a filling process, that contained in the storage container 3 is Mineral water of the bottle 2 through the supply line 16, through the shut-off valve 17, which is then open, through the valve housing 4 of the filling valve 1 and between the pipe sections 7 and

through
8 of the filling tube 5 / supplied. The mineral water then flows into the bottle 2 through the lower openings 11 of the filling tube 5. This happens, for example, under the effect of a pressure prevailing in the reservoir 3. It should be noted that the mineral water, when it leaves the filling tube 5 when it enters the bottle 2, flows against the inner wall of the bottle 2 thanks to the conical intermediate piece 12, which prevents, among other things, liquid droplets from settling between the two tube pieces 7 and 8 form and remain in place after each filling process.

To the extent to which the bottle 2 is filled, the mineral water rising in it drives out the gases that are originally located in it.

The gases expelled from the bottle 2 in this way escape into the ambient air through the drain line 25, through the shut-off valve 26, through the lateral pipe socket 34 and through the previously set needle valve 35.

Towards the end of the filling of the bottle 2, the influx of the mineral water rising in it is first slowed down and then fully

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permanently locked, by special electromechanical Devices with which the filling system and in particular the Filling valve 1 are equipped.

These electromechanical devices for slowing down and shutting off the mineral water flow _ _

form an electrical circuit which, in the present case, the excitation coils 22 and 32 of the shut-off valve 17 in the Inlet line 16 or the shut-off valve 26 in the outlet line 25 is actuated at the same time when the mineral water is in the bottle 2 reaches a specified filling level.

This electrical circuit is shown in the circuit diagram of Fig. 2 shown schematically. It essentially has a main switch 38, a control unit 39; with an adjustment potentiometer 40, a delay relay 41 with an adjustment potentiometer 42, a micro control switch 43 and an electromagnetic one Switching relay 44 on.

When the bottle 2 just touches the seal 14 of the centering bell 6 or when the bottle 2 is at the end of a lifting process reaches its filling position by means of a reciprocating piston 45, the bottle 2 is actuated, for example by means of one arranged on the piston 45 Stop, the micro control switch 43.

When the main switch 38 is closed, the control unit 39 and the excitation coil of the switching relay 44 current flows through it, causing the delay relay 41 to be energized is placed, whereas the excitation coil 22 of the shut-off valve 17 is switched off. As a result, the shut-off valve 17 the striker 19 under the action of the return spring 24 of his seat 23 lifted. By opening the shut-off valve 17, the mineral water can flow in through the supply line

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and fill bottle 2 in this way.

After one through the setting potentiometer 42 of the delay relay 41 predetermined period of time, the latter releases the current to the excitation coil 32 of the shut-off valve 26. The shut-off valve 26 closes and interrupts the outflow of the gas flowing through it, so that it is displaced from the bottle 2 Gas can only exit through the needle valve 35, the passage cross section of which is calibrated. Of this The point in time is reduced. Flow rate and thus the flow rate of the bottle 2 in the direction to the outside air leaving gas and consequently a slowing down the inflow of the mineral water rising in bottle 2.

A little later, the mineral water, which continues to rise in the bottle 2, hits this bottle at a given filling level 2 onto the lower end of an electrode 46.

The electrode 46 is a metal rod that extends within the inner pipe piece 7 of the filler pipe 5 extends. The electrode 46 is arranged on the holder 9 of the inner pipe section 7 by means of a bracket 47 and an electrically insulating screw 48. The screw 48 is screwed into the valve housing 4 of the filling valve 1.

The electrode 46 is connected to one terminal of the control valve 39, while the valve housing 4 with the outer pipe section 8 of the filling valve 1 is connected to ground.

In this way, if. The mineral water becomes the lower Reached the end of the electrode 46 in the bottle 2, an electrical connection between this electrode 46 and the metallic

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Part of the filling valve 1 produced. Because of its conductivity the mineral water connects the electrode 46 via the filling pipe 5 to ground. At this moment interrupts the control unit 39 the power supply to the switching relay 44 so that the shut-off valve 17 can close, whereby the supply line 16 is closed. As a result, the inflow of the mineral water into the bottle 2 and thus in turn the rise of the mineral water in the bottle ended.

In a modification of the filling valve, not shown, the shut-off valve of the feed line and / or the drain line through the electrical circuit only partially and then completely closed, so that the inflow the liquid and / or the outflow of the gas displaced by it is initially slowed down and then stopped.

In the presence of an adjusting valve controlled by the electrical circuit, another not shown Modification can be provided that the delay relay first controls this setting valve and that then the control unit closes the shut-off valve of the supply line and / or that of the drain line.

Instead of the individual electrode, when the liquid reaches the specified fill level with a Part of the filling valve interacts electrically, two electrodes can also be provided by the other parts of the filling valve are electrically isolated and preferably by the same amount in the container to be filled reach down.

The electrical circuit can be connected to the respective electrical Resistance to be adjusted to the liquid to be filled.

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Claims (20)

- 12 - PATENT CLAIMS Filling valve for filling a container with a liquid, with a valve housing on which a during filling in The filling tube immersing the container is arranged, with a feed line provided with a shut-off valve for the liquid to be filled into the container and with a drain line provided with a shut-off valve for the gas displaced from the container by the inflowing liquid, the inlet line and the outlet line run at least partially in the valve housing, characterized in that an electrical circuit for the actuation the shut-off valve (17) of the inlet line (16) and / or the shut-off valve (26) of the drain line (25) and a circuit element (8, 46) are provided. 2) filling valve according to claim 1, characterized in that the circuit when the liquid level rises can be deduced from the predetermined filling level by means of the circuit element (46). 3) filling valve according to claim 1, characterized in that the circuit element (46) is designed so that the Circuit is opened when the liquid level rises to the specified filling level. 4) filling valve according to one of claims 1 to 3, characterized in that that to slow down the filling process 109851/1300 2,28780 its termination, the feed line (16) and / or the drain line (25) can be partially and then completely shut off. 5) filling valve according to claim 4, characterized in that a control valve for slowing down the filling process, preferably a needle valve 'with adjustable valve needle' is provided is, which is arranged in a bypass, 'on both sides of the shut-off valve (17) of the feed line (16) is connected to this. 6) filling valve according to claim 4, characterized in that an adjusting valve for slowing down the filling process, preferably a needle valve with an adjustable valve needle is provided, which is arranged in a bypass is connected to the drain line (25) on both sides of the shut-off valve (26). 7) filling valve according to claim 4, characterized in that an adjusting valve, preferably a needle valve (35) with an adjustable valve, for slowing down the filling process Valve needle (36) is provided, which is arranged in a line branch which is located upstream of the shut-off valve (26) the drain line (25) branches off from this. 8) filling valve according to one of claims 5 to 7, characterized in that that the adjusting valve (35) can be controlled by the electrical circuit. 109851/1300 9) Filling valve according to one of claims 1 to 8 _f, characterized in that the circuit has at least one control device (39) with a first setting potentiometer (40) , a delay relay (41) with a second setting potentiometer (42), a microcontroller switch (43) and an electromagnetic switching relay (44). 10) filling valve according to claim 9, characterized in that the first setting potentiometer (40). depending on the electrical resistance of the liquid to be filled is adjustable. 11) filling valve according to one of claims 5 to 7, characterized in that the adjusting valve (35) is independent is adjustable by the electrical circuit. 12) Filling valve according to one of claims 1 to 11, characterized in that the circuit element has a first electrode (46) which is electrically isolated from the valve housing (4) and the lower end of which during a filling process at least up to the predetermined filling level in the filling container (2) reaches down so that when the liquid rises to the filling level, the electrical circuit can be switched by the liquid. ~ 13) filling valve according to claim 12, characterized in that the filling tube (5) is provided as the second electrode of the circuit element. 109851/1300 14) filling valve according to claim 12 or 13, characterized in that the first electrode (46) inside the Filling tube (5), preferably coaxial to this, is arranged. 15) filling valve according to claim 12 or 13, characterized in that diev.erste electrode (46) outside of the Filling tube (5) is arranged. 16) filling valve according to claim 12 or 13, characterized in that the first electrode (46) is electrically insulated is arranged on the filling tube. 17) filling valve according to one of claims 12 to 16, characterized characterized in that the first electrode (46) is designed as a metal rod. 18) Filling valve according to one of claims 12 to 16, characterized in that the first electrode (46) is a metal strip is trained. 19) filling valve according to one of claims 12 to 16, characterized characterized in that the first electrode (46) is designed as a metal wire. 20) Filling valve according to one of claims 12 to 19, characterized in that the lower end of the first electrode (46) is connected to the filling pipe (5) by an intermediate piece (12) which is essentially of annular cross-section and is designed to be electrically insulating and has an upper conical surface (13) which extends from widens from top to bottom. 109851/1300