EP1728565A2 - Vorrichtung zum Reinigen von Behältern und dafür geeignetes Verfahren - Google Patents

Vorrichtung zum Reinigen von Behältern und dafür geeignetes Verfahren Download PDF

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Publication number
EP1728565A2
EP1728565A2 EP20050014445 EP05014445A EP1728565A2 EP 1728565 A2 EP1728565 A2 EP 1728565A2 EP 20050014445 EP20050014445 EP 20050014445 EP 05014445 A EP05014445 A EP 05014445A EP 1728565 A2 EP1728565 A2 EP 1728565A2
Authority
EP
European Patent Office
Prior art keywords
washing
conduit
washing liquid
rotating body
containers
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Withdrawn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
EP20050014445
Other languages
English (en)
French (fr)
Inventor
Giovanni Spotti
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.)
R Bardi Srl
Original Assignee
R Bardi Srl
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 R Bardi Srl filed Critical R Bardi Srl
Publication of EP1728565A2 publication Critical patent/EP1728565A2/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/28—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by splash, spray, or jet application, with or without soaking
    • B08B9/34—Arrangements of conduits or nozzles

Definitions

  • the present invention relates to a device for washing containers, of the type containing a conduit for the passage of a washing liquid, a rotating body defining a plurality of nozzles, to inject the washing liquid into the containers, and means for connecting the rotating body to the conduit.
  • the present invention further relates to a method for washing containers, in a continuous industrial process, by means of a washing device defining a passage for a washing liquid and a plurality of nozzles.
  • the present invention finds application within industrial processes and devices for washing containers, in particular containers, such as bottles or jugs, used for bottling mineral waters or other alimentary products, but also vials, test tubes or other containers used in the pharmaceutical industry.
  • containers such as bottles or jugs, used for bottling mineral waters or other alimentary products, but also vials, test tubes or other containers used in the pharmaceutical industry.
  • the main risk is constituted by the fact that the liquids used for washing / rinsing the containers may be subject to contamination as they pass inside the washing device. In this case, every effort to use originally safe products, from the health viewpoint, for washing / rinsing, would be in vain.
  • washing devices offer substantially no assurance with regard to the contamination of washing / rinsing liquids, as they pass inside the devices themselves.
  • Said washing devices comprise a conduit in which is conveyed the washing liquid, which is then injected into the containers to be washed by means of a plurality of nozzles.
  • rotating nozzles are used, to increase the effectiveness of the washing operation and to allow the nozzle to clean itself.
  • conduits with square (or rectangular) cross section, to facilitate the coupling of the nozzles to the conduits, as described for example in the patent document DE2402630 .
  • conduits when they include mutually welded different parts, internally have high porosity, as a result of the welds made on the outer part of the conduit.
  • said washing devices necessarily define a plurality of dead points, corners and fissures, within the path travelled by the washing liquid, i.e. on the inner surface of the device that comes in contact with the washing liquid. Consequently, the contamination of the device, and hence of the washing liquid and, ultimately, of the container, is facilitated.
  • the liquid present inside the device does not flow out completely, but remains partially trapped in the interstices present inside the device, along the inner surface in contact with the washing liquid, thereby promoting the development of bacterial cultures, especially during prolonged idle periods (e.g. at weekends).
  • washing devices cannot be sterilised, since they comprise said dead spots in which bacterial cultures tend to nest, making it useless to employ fluids with chemical additives or at high temperature (e.g. about 160°C) to sterilise the conduit.
  • washing devices derive evident advantages from the use of rotating jets, do not assure adequate safety in terms of hygiene, especially when the liquids used for washing do not include disinfecting additives.
  • An object of the present invention is to eliminate the aforesaid drawbacks and to make available a device for washing glass containers, which is reliable and safe from the sanitary viewpoint, whilst maintaining the advantages associated to rotating jets.
  • a further object of the present invention is to make available a method for washing containers, which is particularly safe and reliable from the hygiene viewpoint, hampering the contamination of the washing liquid.
  • the reference number 1 designates a device for washing containers 2 according to the present invention.
  • Said device 1 is applied in particular to containers 2 made of glass or plastic material, e.g. polycarbonate or PET.
  • the device 1 in turn, is part of a washing apparatus which comprises means for handling the containers, according to the prior art.
  • the device 1 comprises a conduit 3 for the passage of a liquid for washing / rinsing the containers 2.
  • the conduit 3 originally has circular cross section, in order to avoid the presence of corners along an inner surface of the conduit in contact with the washing liquid.
  • the conduit 3 is fastened to a known frame, comprised in said washing apparatus.
  • the reference number 4 designates a cam, connected to said washing apparatus in such a way as to rotate, actuated by the motion of the containers 2, according to the prior art.
  • the reference number 5 designates a rotating body integral with said cam 4.
  • Said rotating body 5, in a preferred but not exclusive embodiment, consists of a radially holed cylinder.
  • the rotating body 5 defines a plurality of nozzles 6, through which the washing liquid is injected into the containers 2.
  • Each nozzle 6 consists of a through hole defined by the rotating body 5, having an inlet and an outlet; said hole having two flares, one at the inlet and one at the outlet.
  • This configuration of the rotating body 5 and of the nozzles 6 allows the nozzles 6 to clean themselves during the washing operation, according to a substantially known technique.
  • the conduit 3 is preferably made of 316L steel.
  • the conduit 3 essentially constitutes a manifold, fed with the washing liquid so that the washing liquid is inside the conduit 3 at a certain pressure and it is distributed to the nozzles 6.
  • the conduit 3 is connected to the rotating body 5 and hence to the nozzles 6 by means of junction elements 7.
  • the device 1 comprises as many junction elements 7 as there are nozzles 6.
  • the device 1 comprises two junction elements 7.
  • Each junction element 7 internally defines a passage for the washing liquid; said passage has a smooth, polished surface.
  • Each junction element 7 has a lateral surface, a surface for contact with the conduit 3 and a surface for sliding contact with the cylindrical body 5.
  • each junction element 7 is so shaped that said sliding contact surface completely adheres to the outer surface of the rotating body 5.
  • Each junction element 7 is fastened to the conduit 3 in such a way as to define therewith a passage, through which the washing fluid flows, having a rounded / polished surface, hence free of edges or dead spots.
  • Each junction element 7 comprises a first portion 7a fastened to a second portion 7b.
  • the first portion 7a of each junction element 7 is welded and joined to the conduit 3.
  • said first portion 7a substantially consists of a conduit with circular cross section of the type in 3, preferably made of 316L steel.
  • a second portion 7b of each junction element 7 consists of a body internally defining a passage having circular cross section.
  • Said second portion 7b is made of a substantially elastic material, such as a fluoridated polymer for food products (PVDF).
  • PVDF fluoridated polymer for food products
  • said second portion 7b is made of Teflon.
  • Said second portion 7b has a surface in sliding contact with the rotating body 5.
  • the fastening of the first portion 7a to the second portion 7b of each junction element 7 comprises, in the illustrated embodiment, a contact surface, external to a surface in contact with the washing liquid, so shaped as to achieve a fluid tight set-in joint.
  • the device 1 comprises anchoring means, active on the lateral surface of each junction element 7 to fasten the first portion 7a to the second portion 7b, said anchoring means not interfering with the passage of the washing liquid.
  • the rotating body 5 is made to rotate by known actuating means, not shown in the figures.
  • the rotating body 5 is pressed against the junction elements 7 by means of at least one blocking element 8, in such a way as to obtain a pressure at said sliding contact surface.
  • the rotating body 5 achieves a seal, enabling or disabling the exit of the washing liquid through a given nozzle 6, depending on the angle of rotation of the rotating body 5 relative to the junction element 7 corresponding to that nozzle.
  • the rotating body 5 is in a position that allows the exit of the washing liquid, whilst in Figure 3 said exit is inhibited.
  • said seal is originally facilitated by the fact that the second portion 7b of the junction elements is made of a material that has a certain elasticity.
  • the blocking element 8 in a preferred but not exclusive embodiment, has a first end fastened to a portion of the outer surface of the conduit 3 and a second end whereto is rotatably associated the rotating body 5.
  • the blocking element 8 acts on the rotating body 5 in such a way as to press it against the junction elements 7, in order to establish a certain pressure on said sliding contact surfaces.
  • the conduit 3 is internally polished, along its entire inner surface in contact with the washing liquid.
  • the conduit 3 is welded to the junction elements 7, in particular to the first portion 7a of each junction element 7.
  • Said welds are both external welds and internal welds, made using inert gas, and with tapered junction surfaces.
  • the inner surface defined by the conduit 3 and by the junction elements 7 is free of porosities and rounded / polished in each of its portions. Therefore, the device 1 globally defines a passage for the washing liquid that is free of dead spots, edges or gaps.
  • the washing device 1 defines a passage for the washing liquid, comprising the conduit 3 and the through holes of the junction elements 7, which originally has a smooth and rounded / polished surface in each of its portions.
  • the washing liquid present inside the device 1 during the washing of the containers 2, flows out completely from said passage at the end of the washing, without residues of washing liquid in the device. Said outflow occurs through an opening, not shown, obtained at the base of the conduit 3.
  • the device 1 is originally free of threaded members, rubber gaskets, dead spots, fissures or porous surfaces, which would promote the contamination of the device because of the formation of bacterial colonies, promoted by the stagnation of portions of washing / rinsing liquid inside the device.
  • the washing device of the present invention is originally capable of being sterilised, by circulating a disinfecting or high temperature fluid, since the inner surface to be sterilised is built with suitable materials.
  • the washing device of the present invention originally allows to spray any washing liquid into containers 2 through rotating nozzles 6, without said washing liquid being contaminated when passing inside the device 1.
  • the present invention also makes available a method for washing containers, in a continuous industrial process, by means of a washing device 1 defining a passage for a washing liquid. Said method comprises the following steps:
  • Said method further comprises a preliminary step of sterilising said passage, together with the through holes of the junction elements 7 and with the nozzles 6, by circulating a fluid at high temperature or chemical steriliser.
  • the method of the present invention originally allows to wash or rinse containers 2 with any liquid, even without disinfecting additives, sprayed into the containers 3 through rotating nozzles 6, avoiding the contamination of the device and of the washing / rinsing liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP20050014445 2005-05-31 2005-07-04 Vorrichtung zum Reinigen von Behältern und dafür geeignetes Verfahren Withdrawn EP1728565A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPR20050025 ITPR20050025A1 (it) 2005-05-31 2005-05-31 Dispositivo di lavaggio di contenitori e procedimento.

Publications (1)

Publication Number Publication Date
EP1728565A2 true EP1728565A2 (de) 2006-12-06

Family

ID=36888660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050014445 Withdrawn EP1728565A2 (de) 2005-05-31 2005-07-04 Vorrichtung zum Reinigen von Behältern und dafür geeignetes Verfahren

Country Status (2)

Country Link
EP (1) EP1728565A2 (de)
IT (1) ITPR20050025A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2289640A1 (de) * 2009-09-01 2011-03-02 Krones AG Spritzvorrichtung
EP2724793A1 (de) 2012-10-24 2014-04-30 Sidel S.p.A. Con Socio Unico Zerstäubervorrichtung
EP3124128A1 (de) 2015-07-30 2017-02-01 Gebo Packaging Solutions Italy SRL Berieselungsvorrichtung und zugehörige wascheinheit
WO2019048142A1 (de) 2017-09-09 2019-03-14 Krones Ag Vorrichtung und verfahren zum reinigen von flaschen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402630A1 (de) 1974-01-21 1975-07-24 Orthmann & Herbst Spritzrohr fuer flaschenreinigunsmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402630A1 (de) 1974-01-21 1975-07-24 Orthmann & Herbst Spritzrohr fuer flaschenreinigunsmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2289640A1 (de) * 2009-09-01 2011-03-02 Krones AG Spritzvorrichtung
EP2724793A1 (de) 2012-10-24 2014-04-30 Sidel S.p.A. Con Socio Unico Zerstäubervorrichtung
EP3124128A1 (de) 2015-07-30 2017-02-01 Gebo Packaging Solutions Italy SRL Berieselungsvorrichtung und zugehörige wascheinheit
WO2019048142A1 (de) 2017-09-09 2019-03-14 Krones Ag Vorrichtung und verfahren zum reinigen von flaschen

Also Published As

Publication number Publication date
ITPR20050025A1 (it) 2006-12-01

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