EP0345685A1 - Ajutage de remplissage - Google Patents

Ajutage de remplissage Download PDF

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Publication number
EP0345685A1
EP0345685A1 EP89110118A EP89110118A EP0345685A1 EP 0345685 A1 EP0345685 A1 EP 0345685A1 EP 89110118 A EP89110118 A EP 89110118A EP 89110118 A EP89110118 A EP 89110118A EP 0345685 A1 EP0345685 A1 EP 0345685A1
Authority
EP
European Patent Office
Prior art keywords
housing
piston
mouthpiece
opening
special feature
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP89110118A
Other languages
German (de)
English (en)
Inventor
Lars Erik Trygg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIG Combibloc GmbH and Co KG
Original Assignee
SIG Combibloc GmbH and Co KG
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 SIG Combibloc GmbH and Co KG filed Critical SIG Combibloc GmbH and Co KG
Publication of EP0345685A1 publication Critical patent/EP0345685A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly

Definitions

  • the present invention relates to a mouthpiece, especially a tap mouthpiece for filling machines and the like. for liquid products. It contains a housing with at least one connectable mouthpiece opening and a valve body in the form of a piston controlled in the housing.
  • the piston is designed so that it can slide back and forth in the housing, between the retracted position in which the opening is exposed and the advanced position in which the piston pushes into the opening and closes it completely.
  • Mouthpieces of this type are used, inter alia, in machines to fill soups, creams, fruit compotes, sauces and the like, which may contain fruit, vegetable or meat pieces, in packaging, which is carried out in rapid succession on a conveyor belt which is located under the mouthpiece opening is transported. Since it is food, the highest demands are placed on hygiene. The mouthpiece must be able to be sterilized at regular intervals. Together with the fact that the environment of the mouthpiece can be relatively aggressive, among other things as a result of fruit acids, this leads to the fact that the parts of known mouthpieces are made of stainless steel.
  • the products to be filled may in certain cases contain relatively large pieces as well as parts of long-fiber products where it must be possible to cut them off during filling. It is therefore necessary that a very precise fit can be maintained between the piston-shaped valve body and the mouthpiece opening in order to ensure an effective cutting function in between. This exact fit means that the piston gets stuck in the mouthpiece opening or in the controls used during the sterilization processes - as a result of the expansion of the material under elevated temperature - and only moves again when the temperature has dropped to an essentially normal operating temperature.
  • the prestressing element causes the dimensions of the piston to adapt to the control or to the mouthpiece opening, essentially independently of temperature fluctuations or wear.
  • a disadvantage of the mouthpiece with a split piston is that, for example, during steam sterilization at high pressure, the steam pressure acting on the piston compresses the piston a little with subsequent steam escape through the mouthpiece opening. Similarly, if the mouthpiece is used to pack a product that is under high pressure is used - the piston is compressed by the pressure of the product. There is then a risk that the product will escape through the mouthpiece opening, even if it is to be closed by means of the piston. Furthermore, small-sized pistons can be difficult to divide and accommodate the necessary biasing elements between the halves.
  • the housing in which the piston is controlled is divided instead of the piston.
  • This offers the same advantages as the use of a split piston, since the housing parts can move relative to one another to a small extent in order to prevent the piston from getting stuck in it due to temperature fluctuations.
  • the housing is placed in a vessel that is pressurized with vapor or that contains a liquid product under high pressure, this pressure will not result in deterioration of the seal between the piston and mouthpiece. This applies in the event that the outer surface of the housing is larger than the inner surface of the housing, which means that the pressure creates a pressing effect on the housing around the piston.
  • the particularly characteristic of a mouthpiece of the type described in the introduction is that the housing is divided in the axial direction and that devices are provided which are intended to press the housing halves against one another in order to act together with the piston in a sealing manner.
  • the devices mentioned contain pretensioning devices which surround the housing, preferably in the form of elastic sealing rings which are fitted around the housing. These are intended to act together with the walls in a vessel in which the housing is attached.
  • sealing elements are arranged between the housing halves.
  • the elements seal both radial and axial leakage at the boundary surfaces between the two housing halves.
  • the opposing connecting surfaces on the housing halves are provided with an axial groove or a thumb fitting into the groove.
  • a sealing element constructed in the form of a rubber rod is provided in each groove, provided with a part which runs through a recess in the inner boundary wall of the respective groove and seals off from the piston.
  • the sealing element just mentioned can also be used be provided with a fixing spring which is inserted into a recess in the opposite thumb.
  • the sealing elements are best so thick that in the normal operating position there is a narrow gap between the mutually facing interfaces of the housing halves.
  • the housing is provided with upper and lower flanges which seal against the walls of the vessel in which the housing is mounted.
  • the upper flange is provided with at least one axial opening so that the material in the container can get into the space between the flanges.
  • the housing between the flanges is provided with at least one radial opening, which in the retracted position of the piston leads to the aforementioned material being able to get into the housing and out through the mouthpiece opening.
  • Figure 1 shows very schematically the principle of a filling machine in which a mouthpiece according to the invention is used.
  • a container for a product is designated, which is to be filled in packaging (2).
  • the packaging is conveyed on a conveyor belt under the filling machine in quick succession.
  • the product can consist, for example, of fruit compotes with pieces of fruit or soups with meat cubes.
  • (3) denotes a valve which, in the shown schematic embodiment, is connected to the piston (9) in a mouthpiece (5) according to the invention by a control rod (4).
  • the rod (4) is raised and lowered using the control cylinder (6).
  • another cylinder is designated, which acts on a metering piston (8).
  • the housing (11) is in the form of two interconnected halves, see Fig. 3 and 4, executed.
  • Fig. 3 shows one half of the housing. From this it follows that the connection surfaces defined with one another are provided with a groove (13) in the corresponding housing halves or a thumb (14) fitting into the groove.
  • a rod-shaped sealing element (15) is attached - preferably made of rubber - which is so thick that, in the normal operating position, there is a narrow gap (16) between the two opposing interfaces of the housing halves. This means that certain relative fluctuations, for example temperature fluctuations between the piston (9) and the surrounding housing (11), can be absorbed without the risk of the piston becoming stuck in the housing.
  • the two halves of the housing are held together using an upper sealing ring (17) and a lower sealing ring (18). These sealing rings are located in the groove in the upper and lower flanges of the housing (11) and lie against the inner wall of the container (1), as a result of which the housing halves are pressed together.
  • each sealing element (15) is provided with a projecting section. This piece pushes itself through an out economy (20) in the inner boundary wall of the respective groove in order to make contact with the piston (9).
  • (21) denotes the projection of the respective sealing element (15), which slides into a corresponding recess (22) in the associated thumb (14) in order to fix the sealing element in exactly the right position.
  • the upper flange of the housing is provided with openings (23 ) through which the product flows down in the space delimited by the wall of the vessel and the foot flange (12).
  • the corresponding housing half (11) is provided with a radial opening (24). This allows the product to get further into the housing and out through the mouthpiece opening (10) when the piston (9) is in the retracted position.
  • Fig. 5 the mouthpiece according to the invention is shown during the portioning of the intended amount of product into a package (2) located below the mouthpiece opening.
  • the piston (9) is shown in the position in which it is being pushed into the opening (10).
  • the product pieces that flow past the edge of the opening are effectively cut off due to the cutting function between the piston (9) and the edge just mentioned.
  • the piston then moves further down to remove the amount of product still in the opening (10).
  • the piston (9) is provided with an O-ring if possible, which is attached around the piston. This seals against the upper part of the housing (11) when the piston is in its basic position.
  • pistons from TORLON and POLYSULFON were used with very good results, including in terms of cutting function.
  • a form of execution chosen according to the example was shown and described above. However, this can be varied in various ways within the scope of the claims.
  • the shape and attachment of the sealing rings and sealing elements can be varied. This is also valid for the number and shape of the openings through which the product is to flow into the housing (11).
  • the shape of the housing and also the shape of the corresponding number of mouthpiece openings or pistons can be varied as desired. It has been shown, however, that an oval piston according to the embodiment shown is superior to two separate circular-cylindrical pistons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP89110118A 1988-06-09 1989-06-05 Ajutage de remplissage Withdrawn EP0345685A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8802161 1988-06-09
SE8802161A SE461263B (sv) 1988-06-09 1988-06-09 Tappmunstycke

Publications (1)

Publication Number Publication Date
EP0345685A1 true EP0345685A1 (fr) 1989-12-13

Family

ID=20372572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110118A Withdrawn EP0345685A1 (fr) 1988-06-09 1989-06-05 Ajutage de remplissage

Country Status (2)

Country Link
EP (1) EP0345685A1 (fr)
SE (1) SE461263B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070395A1 (fr) * 2001-03-02 2002-09-12 Jean-Pierre Solignac Tete de remplissage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185885C (fr) *
DE2819245A1 (de) * 1978-05-02 1979-11-15 Hick & Co Gmbh Dosiereinrichtung fuer abfuellanlagen
EP0267458A1 (fr) * 1986-10-29 1988-05-18 PKL Verpackungssysteme GmbH Ajutage avec au moins une ouverture d'ajutage fermable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185885C (fr) *
DE2819245A1 (de) * 1978-05-02 1979-11-15 Hick & Co Gmbh Dosiereinrichtung fuer abfuellanlagen
EP0267458A1 (fr) * 1986-10-29 1988-05-18 PKL Verpackungssysteme GmbH Ajutage avec au moins une ouverture d'ajutage fermable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070395A1 (fr) * 2001-03-02 2002-09-12 Jean-Pierre Solignac Tete de remplissage
US6860414B2 (en) 2001-03-02 2005-03-01 Jean-Pierre Solignac Filling head

Also Published As

Publication number Publication date
SE8802161L (sv) 1989-12-10
SE461263B (sv) 1990-01-29
SE8802161D0 (sv) 1988-06-09

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