WO2008114187A1 - Clapet de remplissage - Google Patents

Clapet de remplissage Download PDF

Info

Publication number
WO2008114187A1
WO2008114187A1 PCT/IB2008/050969 IB2008050969W WO2008114187A1 WO 2008114187 A1 WO2008114187 A1 WO 2008114187A1 IB 2008050969 W IB2008050969 W IB 2008050969W WO 2008114187 A1 WO2008114187 A1 WO 2008114187A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
valve
opening
constraining element
housing
Prior art date
Application number
PCT/IB2008/050969
Other languages
English (en)
Inventor
Marco Botti
Roberto Puglia
Original Assignee
Sbc Bottling & Canning S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sbc Bottling & Canning S.P.A. filed Critical Sbc Bottling & Canning S.P.A.
Publication of WO2008114187A1 publication Critical patent/WO2008114187A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/286—Flow-control devices, e.g. using valves related to flow rate control, i.e. controlling slow and fast filling phases

Definitions

  • the present invention relates to a filling valve.
  • the present invention relates in particular to the food sector, in which filling machines are used, i.e. machines for filling a plurality of containers with a liquid product.
  • Filling machines generally comprise a carrousel provided with a plurality of filling valves, each of which is activated and deactivated during the motion of the valve itself integrally with the carrousel.
  • Each filling valve ordinarily comprises a shutter, movable between an open position and a closed position and able to assume also an intermediate position to throttle the flow of product introduced into the containers during the filling operation.
  • a shutter movable between an open position, a closed position and an intermediate position
  • known technical solutions provide for the use of a first and a second pistons, movable in a housing along their own longitudinal axis.
  • the first piston is connected to the shutter and it is movable between a closed position, at a lower end stop and an open position, at an opening end stop.
  • the second piston is movable between a position of non interference with the first piston and a second position, in which it defines an end stop for the first piston, when the first piston (integrally with the shutter) is in the intermediate position.
  • at least the first piston is double action, so that it can be moved both in the direction of opening and in the direction of closing.
  • prior art solutions provide constraining elements to limit the stroke of each of the two pistons.
  • the intermediate position of the shutter may be varied.
  • known technical solutions provide that one of the constraining elements of the first piston is adjustable, to displace an end stop of the first piston.
  • one of the constraining elements of the second piston is adjustable, to displace an end stop of the second piston.
  • known technical solutions entail some limitations.
  • An object of the present invention is to eliminate the aforesaid drawbacks and to make available a filling valve with shutter having three positions that are precisely adjustable, with the capability of totally offsetting the effect of machining tolerances.
  • the filling valve preferably comprises a spring positioned in the housing of the valve body in such a way as to exercise a thrusting action on the first piston in the direction of opening, with the advantage of using single action pistons, with no need to use double action pistons.
  • said first and second constraining elements can be adjustable in such a way as to lock the second piston in contact with the first piston, when the latter is in a closed position of the valve; this enables, advantageously, to offset completely the play due to machining tolerances.
  • figure 2 shows the valve of figure 1, in an operative condition of closure
  • figure 3 shows the valve of figure 1, in an operative condition of opening
  • figure 4 shows the valve of figure 1, in an operative condition of throttling
  • figure 5 shows the valve of figure 1, in a first adjustment step
  • - figure 6 shows the valve of figure 1, in a second adjustment step
  • - figure 7 shows the valve of figure 1, in a third adjustment step
  • figure 8 shows the valve of figure 1, in a fourth adjustment step
  • figure 9 shows the valve of figure 1, in a fifth adjustment step
  • FIG. 10 shows a lateral view of the valve of figure 1.
  • the reference number 1 designates a filling valve according to the present invention.
  • the valve comprises a shutter 2 able to open or close a conduit 3 for the passage of the products to be introduced into the container during the filling operation.
  • the reference number 4 designates a first piston, having a first end 5 and a second end 6.
  • the first piston 4 is movable in a housing at least partially defined within a valve body 7.
  • the shutter 2 is fastened to the first end 5 of the first piston 4 and moves integrally therewith.
  • the reference number 8 designates a second piston, also movable in said housing.
  • Said housing develops along a longitudinal axis.
  • the first piston 4 and the second piston 8 are movable axially along said longitudinal axis.
  • the first piston 4 and the second piston 8 are aligned along said longitudinal axis, so that the first piston 4 is interposed between the shutter 2 and the second piston 8.
  • the reference number 10 designates a spring, positioned in said housing in such a way as to exert a thrusting action on the first piston 4 in the direction of opening. Said direction of opening corresponds to a movement of the shutter 2 such as to open the conduit 3; vice versa, an opposite direction of closure corresponds to such a movement of the shutter 2 as to close the conduit 3.
  • the spring 10 can be replaced by any other return means, i.e. any actuating means active on the first piston 4 to actuate it in the direction of opening.
  • the valve 1 also comprises a first actuator, operatively active on the first piston 4 to actuate it in the direction of closure and a second actuator operatively active on the second piston 8 to actuate it in the direction of closure.
  • Said actuators are preferably pneumatic and they are known to those skilled in the art. However, other kinds of actuators may be used (e.g., actuators constituted by an electric motor combined with a reduction gear).
  • the first pneumatic actuator is connected to a first inlet 11, through which it inserts the fluid for actuating the first piston 4;
  • the second pneumatic actuator is connected to a second inlet 12, through which it inserts the fluid for the actuation of the second piston 8.
  • the second inlet 12 is in communication with said housing in which slides the second piston 8 through a hole having substantially radial development, relative to said longitudinal axis defined by the pistons (4 e 8) and by the housing.
  • the second piston 8 originally, internally defines a passage 13 for the actuating fluid of the first piston 4, injected through the first inlet 11 by the first actuator.
  • the stroke of the first piston 4 determines the (maximum) section for the passage of the filling fluid flowing out of the conduit 4, in the open position of the valve 1. This stroke is defined by an end stop for the first piston 4 in the direction of opening.
  • said maximum opening end stop for the first piston 4 is constituted, originally, by the second piston 8.
  • the housing in which the first and the second piston move, originally, lacks abutments or other means able to limit the stroke of the first piston 4 in the direction of opening.
  • the stroke of the second piston 8 is delimited, in the direction of opening, by a first constraining element 14 and, in the direction of closing, by a second constraining element 15.
  • first constraining element 14 acts, i.e. when the second piston 8 is at the end stop in the direction of opening, the second piston 8 itself, originally, defines (with its end 9) an end stop for the first piston 4, limiting its stroke in the direction of opening.
  • the second constraining element 15 When the second constraining element 15 acts, i.e. when the second piston 8 is at the end stop in the direction of closing, it defines (with its end 9) an intermediate position for the first piston 4, limiting the end stop in the direction of opening such that the valve is throttled (i.e. with the shutter 2 in an intermediate position between the position of total opening and the position of closure).
  • the expressions "direction of opening” and “direction of closure” always refer to the direction whereby the shutter opens or closes the valve, regardless of whether said expressions are referred to the first or to the second piston, since the pistons are aligned and movable along the same direction.
  • the first constraining element 14 is associated to the valve body 7.
  • the first constraining element 14 comprises its own bushing 16 associated to the valve body 7 such as to be movable relative thereto along said longitudinal axis.
  • the bushing 16 is coupled to the valve body 7 by means of a threaded coupling.
  • the first constraining element 14 preferably comprises its own ring nut 17 interacting with the bushing 16 to lock it in a desired position. In this way, the position of the first constraining element 14 is adjustable in the longitudinal direction of actuation of the pistons 4 and 8.
  • the second constraining element 15 is associated to the second piston 8.
  • the second constraining element 15 comprises its own bushing 18 associated to the second piston 8 such as to be movable relative thereto along said longitudinal axis.
  • the bushing 18 is coupled to the second piston 8 by means of a threaded coupling.
  • the second constraining element 15 preferably comprises its own ring nut 19 able to lock the bushing 18 in a desired position.
  • the position of the second constraining element 15 is adjustable in the longitudinal direction of actuation of the pistons 4 and 8. Therefore, the end stops of the second piston 8 are, originally, both adjustable in the longitudinal direction of actuation of the pistons 4 and 8.
  • the valve 1 operates as follows.
  • the first shutter When the first shutter is active, it actuates the first piston 4 in the direction of closing overcoming the resistance of the spring 10; therefore, the valve is in the closed position, as shown in figure 2.
  • the second actuator is preferably, but not necessarily, inactive.
  • both actuators When both actuators are inactive, the first piston 4 is subjected to the action of the spring 10, which actuates it in the direction of opening; the first piston 4 in turn acts on the second piston 8 actuating it in the direction of opening, until the first constraining element 14 intervenes to stop its stroke. In this situation (shown in figure 3) the valve 1 is in the open position.
  • the opening of the shutter 2 is determined by the first constraining element 14, which defines the end stop for the second piston 8 (and consequently also for the first piston 4) in the direction of opening. Therefore, adjusting the position of the first constraining element 14, it is possible to adjust the opening of the valve 1 in the open position (maximum opening).
  • the second actuator When the first actuator is inactive and, at the same time, the second actuator is active, the second actuator actuates the second piston 8 in the direction of closing (overcoming the resistance of the spring 10 that acts on the second piston 8 indirectly, through the first piston 4).
  • the second constraining element 15 is active on the second piston 8, limiting its stroke in the direction of closing. Therefore, the valve 1 is in the intermediate position (i.e., of throttling), as shown in figure 4.
  • the first piston is subjected to the action of the spring 10, which actuates it in the direction of opening until the second end 6 of the first piston 4 is in contact with the end 9 of the second piston 8, which defines an end stop for the first piston 4 in the direction of opening. Therefore, adjusting the position of the second constraining element 15, it is possible to adjust the opening of the valve
  • valve 1 is originally configured so that said first and second constraining element are both adjustable. Moreover, said constraining elements are originally adjustable independently from each other.
  • valve 1 enables to adjust the opening of the shutter
  • the present invention enables completely to offset, during the adjustment operation, the influence of the machining tolerances of the pistons, thereby assuring a particularly precise and accurate adjustment.
  • Said total offset of the machining tolerances entails the application of an original method, as described hereafter.
  • the present invention is advantageous because it is particularly simple and economical to obtain. It enables to construct a filling valve with three positions (totally closed, totally open and throttled) using two pistons, each piston being of the single action type, i.e. able to be operated by actuation means (e.g., pneumatic) in a single direction of actuation. On the contrary, in prior art solutions at least one of the two pistons was double-action (i.e. movable in both directions). In this way, the present invention allows an additional cost reduction, because it does not necessarily require the presence of a three-way valve to feed the actuation means of the pistons.
  • actuation means e.g., pneumatic
  • a first step (figure 5), the valve 1 is managed in the closed configuration, i.e. with both actuators inactive.
  • said first step provides for displacing the first constraining element 14 and the second constraining element 15 in the direction of closing, such that: - the first constraining element 14 is in contact with the second piston 8, locking it against the first piston 4, which is in the closed position; - the second constraining element 15 is in contact with the second piston 8.
  • the first constraining element 14 is positioned at a predetermined distance relative to the position assumed in the configuration of the first step. In other words, in the second step the first constraining element 14 is displaced in the direction of opening by a predetermined quantity (corresponding to the opening of the shutter 2 in io the throttled position).
  • the second step in turn comprises two intermediate steps.
  • a first intermediate step of the second step the bushing 16 of the first constraining element 14 is displaced in the direction of opening (to this i5 intermediate step corresponds the configuration of the valve 1 illustrated in figure 6).
  • the second constraining element 15 is positioned at a predetermined distance relative to the position assumed in the configuration of the second step. In other words, in the third step the second constraining element 15 is displaced in the direction of opening5 by a predetermined quantity (corresponding to the opening of the shutter 2 in the open position).
  • the third step in turn comprises two intermediate steps.
  • a first intermediate step of the third step the bushing 18 of the second constraining element 15 is displaced in the direction of opening (to this intermediate step corresponds the configuration of the valve 1 illustrated in figure 8).
  • the second and the third step can be performed in reversed order.
  • the first step must necessarily be performed first.
  • said first and second constraining elements can be adjustable in such a way as to lock the second piston 8 in contact with the first piston 4, when the latter is in a closed position of the valve 1, to offset completely the influence of machining tolerances.
  • This configuration corresponds to the first adjustment step.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

L'invention concerne un clapet de remplissage (1) qui comprend un corps de clapet (7) définissant un boîtier; un premier piston (4) axialement mobile dans le boîtier; un obturateur (2) relié au premier piston (4) pour respectivement fermer et ouvrir le clapet; un second piston (8) axialement mobile dans le boîtier et aligné sur le premier piston (4) de façon qu'une butée soit définie pour le premier piston (4) dans la direction d'ouverture; des moyens de rappel (10) agissant fonctionnellement sur le premier piston (4) de façon que ce dernier soit actionné dans la direction d'ouverture; un premier et un second élément de limitation (14, 15) pouvant respectivement limiter la course du second piston (8) dans la direction d'ouverture et de fermeture, chacun desdits premier et second éléments de limitation (14, 15) étant réglable indépendamment de l'autre de façon que la butée correspondante du second piston (8) soit déplacée axialement.
PCT/IB2008/050969 2007-03-19 2008-03-14 Clapet de remplissage WO2008114187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPR2007A000015 2007-03-19
ITPR20070015 ITPR20070015A1 (it) 2007-03-19 2007-03-19 Valvola di riempimento

Publications (1)

Publication Number Publication Date
WO2008114187A1 true WO2008114187A1 (fr) 2008-09-25

Family

ID=39666112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/050969 WO2008114187A1 (fr) 2007-03-19 2008-03-14 Clapet de remplissage

Country Status (2)

Country Link
IT (1) ITPR20070015A1 (fr)
WO (1) WO2008114187A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595499A (zh) * 2015-01-27 2015-05-06 安丘市鼎正机械设备有限公司 变流量灌装阀

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623548A1 (de) * 1996-06-13 1997-12-18 Khs Masch & Anlagenbau Ag Füllventil zum Abfüllen von Flüssigkeiten
EP1215166A2 (fr) * 2000-12-09 2002-06-19 KHS Maschinen- und Anlagenbau Aktiengesellschaft Procédé et dispositif de remplissage des récipients de produit liquide
EP1762539A1 (fr) * 2005-09-13 2007-03-14 Sidel Méthode et appareil pour remplir un récipient avec une quantité prédéterminée d'un produit liquide et machine de remplissage associée

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623548A1 (de) * 1996-06-13 1997-12-18 Khs Masch & Anlagenbau Ag Füllventil zum Abfüllen von Flüssigkeiten
EP1215166A2 (fr) * 2000-12-09 2002-06-19 KHS Maschinen- und Anlagenbau Aktiengesellschaft Procédé et dispositif de remplissage des récipients de produit liquide
EP1762539A1 (fr) * 2005-09-13 2007-03-14 Sidel Méthode et appareil pour remplir un récipient avec une quantité prédéterminée d'un produit liquide et machine de remplissage associée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595499A (zh) * 2015-01-27 2015-05-06 安丘市鼎正机械设备有限公司 变流量灌装阀

Also Published As

Publication number Publication date
ITPR20070015A1 (it) 2008-09-20

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