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WO1993000537A1 - Raccord de suppression du vide pour silos de stockage hygienique - Google Patents

Raccord de suppression du vide pour silos de stockage hygienique Download PDF

Info

Publication number
WO1993000537A1
WO1993000537A1 PCT/US1991/004527 US9104527W WO9300537A1 WO 1993000537 A1 WO1993000537 A1 WO 1993000537A1 US 9104527 W US9104527 W US 9104527W WO 9300537 A1 WO9300537 A1 WO 9300537A1
Authority
WO
WIPO (PCT)
Prior art keywords
sanitary
silo
overflow pipe
fitting
branch
Prior art date
Application number
PCT/US1991/004527
Other languages
English (en)
Inventor
Mark R. Boytim
Eric G. Snoke
Original Assignee
Boytim Mark R
Snoke Eric G
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 Boytim Mark R, Snoke Eric G filed Critical Boytim Mark R
Priority to CA002103270A priority Critical patent/CA2103270A1/fr
Priority to AU91627/91A priority patent/AU9162791A/en
Priority to PCT/US1991/004527 priority patent/WO1993000537A1/fr
Priority to US08/142,450 priority patent/US5538038A/en
Priority claimed from CA002103270A external-priority patent/CA2103270A1/fr
Publication of WO1993000537A1 publication Critical patent/WO1993000537A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
    • E03C1/1225—Arrangements of devices in domestic waste water pipe-line systems of air admittance valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building

Definitions

  • This invention deals broadly with the subject of food processing where liquid or solid food particles (which behave as fluids) need to be stored in sealed sanitary vertical towers commonly called sanitary silos.
  • the present invention relates to a siphon venting or vacuum breaking device to prevent the col- lapse of a silo's dome when a sanitary silo is overfilled and then is rapidly drained by an overflow pipe causing a vacuum therein.
  • this new invention pertains to a branched tubular fitting with a confluence region between a passageway for the effluent discharge from a silo and a single sanitary air intake pipe for introduction of sanitary air into the suctional discharge in the overflow pipe there ⁇ by reducing the vacuum in the silo's dome while preserving the sanitary environment in the silo.
  • the present invention has no moving parts nor valves and utilizes only the basic principles of fluid mechanics and the art of plumbing for its operation.
  • Silos used in processing foods for human consumption are usually thought of as enclosed cylindrical towers for preventing air and moisture from passing in or out of the food stored therein, and in sanitary silos, which are com ⁇ monly filled from their bottoms, there is often a problem of overfilling the silos causing their rupture.
  • an overflow pipe is often installed vertically between the dome of the silo and a sanitary enclosure at the silo's base thereby providing a passageway for discharging the overfilled portion of the silo's content while preserving the silo's sanitary environ- ment by preventing unclean matter from entering the silo through the outlet end of the overflow pipe.
  • a branched tubular fitting for connection to and joining with an overflow 7 pipe on a sealed sanitary silo for automatically offsetting and regulating the suction therein caused by a siphonal discharge from overfilling the silo.
  • Our invention necessarily embodies and is connected to and is joined with a vertical sanitary air intake pipe which is essentially of the same height and extends vertically parallel as the overflow pipe with their outlet and inlet ends -it-
  • sanitary environment such as a chamber for not only receiving the effluent discharge from the silo, but also providing sanitary air to the intake pipe while preventing unclean matter from entering the silo in accordance with guidelines established by several authorities for the design and fabrication of sanitary silos as promulgated by such organizations as the International Association of Milk, Food and Environmental Sanitarians, Inc., Dept. B, P.O. Box 701, Ames, Iowa 50010, U.S.A., Telephone: 515-232-6699, Ext. B.
  • the branched tubular fitting of our present invention comprises a generally Y-shaped housing defining upwardly positioned branch passageways for connection to an upper portion of an overflow pipe and a sanitary air intake pipe, said passageways joining at a junctional confluence region in the proximal center of the fitting which extends down ⁇ wardly to a common outlet opening for connection to the lower portion of the overflow pipe thereby providing the means for introducing sanitary air by suction produced at the confluence region due to the siphonal discharge through the fitting into the overflow pipe thus reducing vacuum in the dome of the silo.
  • FIG. 1 are simplified cross-sectional views of presently known sanitary silos which illustrate the present problem caused by overfilling them.
  • Fig. 1 illustrates such a silo filled to its capacity by fluid food (solid dots) with overflow pipe to admit sanitary air (circles) to the headspace in the dome.
  • Fig. 2 illus ⁇ trates an overfilled silo being drained by the overflow pipe.
  • Fig. 3 illustrates the implosion of the silo's dome caused by suctional discharge.
  • Fig. - is another cross-sectional view of the sanitary silos shown in Fig's. 1-3, but with the branched tubular fit ⁇ ting and sanitary air intake pipe of this invention installed.
  • Fig. 5 is an enlarged cross-sectional view of the branched tubular fitting as seen disconnected from the silo;
  • Fig. 6 is a side elevational view;
  • Fig. 7 is a top plan view; and
  • Fig. 8 is a bottom plan view thereof.
  • the reference numeral 1 generally refers to a sanitary silo of the type commonly used for storage of fluid foods.
  • a convex dome 2 encloses the top of the silo 1 below which an overflow pipe 3 extends downwardly into an enclosed sanitary structure 4.
  • the sani- tary structure is often a room for operating the silo 1 and usually contains a port 6 for filling and emptying the silo, access means 7, and other controls for cleaning the silo which have been omitted from the drawings since they are not rele- • vant to the present invention.
  • the silo 1 is filled to its proper maximum level 8 with fluid food 9 (indicated by dots) above which there is a headspace 10 filled with sanitary atmospheric pressure 11 (indicated by circles).
  • the overflow pipe 3 one function of the overflow pipe 3 is to provide an exit means for trapped sanitary air in the silo 1 as it is filled with fluid but very often the silo is inad ⁇ vertently overfilled as illustrated in Fig. 2 because the velocity of the fluid entering the silo through the port 6 is under pressure and is greater than the velocity of the over- filled portion being drained by the overflow pipe 3 which results in the fluid rising into the headspace 10 of the silo.
  • Fig. 4 The installation and operation of our present invention to remedy this problem is illustrated in Fig. 4.
  • a portion of the overflow pipe 3 li s been cut away and replaced by our branched tubular fitting 5 which is also connected to a sanitary air intake pipe 12 with its inlet end enclosed in the sanitary structure 4.
  • This particular arrangement which is claimed as part of our invention, al ⁇ lows only sanitary air 11 to enter the silo 1 during its normal operation (see Fig. 1) and, moreover, our invention allows only sanitary air 11 to be drawn into any suctional discharge when the silo 1 is overfilled.
  • Fig. 5 is an enlarged cross-sectional view of our branched tubular fitting 5 of the present invention. It is preferrably fabricated from stainless steel so that it may be welded onto any existing overflow pipe of the same material, however it is also possible to fabricate our invention from other materials and install it by other means provided that these meet guidelines and criteria of the organizations here ⁇ tofore mentioned.
  • Our fitting 5 is generally tubularly Y-shaped with up ⁇ wardly positioned first and second branch passageways of essentially equal length.
  • the first branch passageway 13 lias a larger diameter for connection to an upper portion of an overflow pipe 3, while the second branch passageway 14 has a generally smaller diameter for attachment to a sanitary air intake pipe 12, both first and second branch passageways join ⁇ ing in an enlarged essentially circular confluence region 15 at the proximal center of our fitting 5 and extending down ⁇ wardly into a common tubular passageway 16 of appropriate diameter for attachment to and connection with the lower portion of the overflow pipe 3-
  • Fig. 6 is a side elevational view of the fitting 5 il ⁇ lustrating the shape of the enlarged confluence region 5 in relation to the diameter of the first branch passageway 13 and common tubular passageway 16.
  • Fig. 7 shows the relative diameters of the first 13 and second branch passageways in a top plan view
  • Fig. 8 illustrates the shape of the internal confluence region 15 as seen through the common passageway 16 in a bottom plan view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Storage Of Harvested Produce (AREA)

Abstract

Raccord tubulaire destiné à s'adapter sur le trop-plein d'un silo de stockage hygiénique afin d'introduire de l'air propre dans un siphon d'évacuation provenant dudit silo et de réduire ainsi le vide au sein du silo pour empêcher son effondrement par implosion. Ledit raccord (5) est généralement tubulaire en forme de Y et est doté d'un embranchement avec deux passages (13 et 14) qui relient une partie supérieure d'un trop-plein (3) à un tuyau d'arrivée d'air propre (12). Ces passages s'étendent vers le bas et se rencontrent à une région de confluence élargie (15) qui se termine par un passage unique taillé en cône vers le bas (16), destiné à être relié à une partie inférieure dudit trop-plein (3). La présente invention décrit également un tuyau d'arrivée d'air propre (12) qui s'étend vers le haut à partir d'une structure de travail hygiénique fermée (4) et est relié au raccord (5), empêchant ainsi les impuretés de pénétrer dans le silo (1) pendant le foncitonnement normal ou lorsque ledit silo est trop rempli.
PCT/US1991/004527 1991-06-25 1991-06-25 Raccord de suppression du vide pour silos de stockage hygienique WO1993000537A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002103270A CA2103270A1 (fr) 1991-06-25 1991-06-25 Raccord de soupape casse-vide pour reservoirs sanitaires
AU91627/91A AU9162791A (en) 1991-06-25 1991-06-25 Vacuum relief fitting for sanitary silos
PCT/US1991/004527 WO1993000537A1 (fr) 1991-06-25 1991-06-25 Raccord de suppression du vide pour silos de stockage hygienique
US08/142,450 US5538038A (en) 1991-06-25 1991-06-25 Vacuum relief fitting for sanitary silos

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002103270A CA2103270A1 (fr) 1991-06-25 1991-06-25 Raccord de soupape casse-vide pour reservoirs sanitaires
AU91627/91A AU9162791A (en) 1991-06-25 1991-06-25 Vacuum relief fitting for sanitary silos
PCT/US1991/004527 WO1993000537A1 (fr) 1991-06-25 1991-06-25 Raccord de suppression du vide pour silos de stockage hygienique

Publications (1)

Publication Number Publication Date
WO1993000537A1 true WO1993000537A1 (fr) 1993-01-07

Family

ID=27156847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/004527 WO1993000537A1 (fr) 1991-06-25 1991-06-25 Raccord de suppression du vide pour silos de stockage hygienique

Country Status (1)

Country Link
WO (1) WO1993000537A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970048A (en) * 1993-11-30 1999-10-19 Nokia Telecommunications Oy Control of overload situations in frame relay network

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1661202A (en) * 1925-01-26 1928-03-06 Edwin S Thayer Tank-car siphon valve
US2312659A (en) * 1942-05-07 1943-03-02 J A Zurn Mfg Company Combined soil waste and vent fitting
US3086543A (en) * 1960-03-21 1963-04-23 California Mfg And Equipment C Vacuum breaker
US3374726A (en) * 1966-06-07 1968-03-26 Asahi Breweries Ltd Beverage fermentation and storage tank of a large capacity

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1661202A (en) * 1925-01-26 1928-03-06 Edwin S Thayer Tank-car siphon valve
US2312659A (en) * 1942-05-07 1943-03-02 J A Zurn Mfg Company Combined soil waste and vent fitting
US3086543A (en) * 1960-03-21 1963-04-23 California Mfg And Equipment C Vacuum breaker
US3374726A (en) * 1966-06-07 1968-03-26 Asahi Breweries Ltd Beverage fermentation and storage tank of a large capacity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970048A (en) * 1993-11-30 1999-10-19 Nokia Telecommunications Oy Control of overload situations in frame relay network

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