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WO1993001431A1 - Vanne - Google Patents

Vanne Download PDF

Info

Publication number
WO1993001431A1
WO1993001431A1 PCT/GB1992/001130 GB9201130W WO9301431A1 WO 1993001431 A1 WO1993001431 A1 WO 1993001431A1 GB 9201130 W GB9201130 W GB 9201130W WO 9301431 A1 WO9301431 A1 WO 9301431A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
inner plate
aperture
plate
inlet
Prior art date
Application number
PCT/GB1992/001130
Other languages
English (en)
Inventor
Stephen Andrews
Ian Michael Vokins
Original Assignee
Carnaudmetalbox Plc
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 Carnaudmetalbox Plc filed Critical Carnaudmetalbox Plc
Publication of WO1993001431A1 publication Critical patent/WO1993001431A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B65G53/4608—Turnable elements, e.g. rotary wheels with pockets or passages for material
    • B65G53/4616—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning parallel to flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • F16K3/085—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres the axis of supply passage and the axis of discharge passage being coaxial and parallel to the axis of rotation of the plates

Definitions

  • This invention relates to a valve.
  • a valve for use in aseptic machines for processing materials such as foodstuff.
  • the foodstuff to be packaged by such a machine is generally fed through pipes to a position where it is packaged.
  • a valve must be provided in the pipes to stop the flow of the foodstuff when required.
  • Such pipe valves are conventionally of the diaphragm type.
  • an elbow is formed in the pipe and a rubber or other type of elastomeric diaphragm is compressed onto the elbow to stop the flow of product.
  • the compression may be done either manually or by external power, but invariably it takes a certain time to fully close the pipe. During this time, the amount of foodstuff flowing through the pipe reduces but there is no positive ON/OFF closure.
  • shear sensitive products may be damaged by virtue of the progressive nature of the closure operation which can degrade the final product.
  • a valve comprising a pair of outer plates having respective inlet and outlet apertures in register with each other, a relatively moveable inner plate sandwiched between the outer plates, the inner plate having an aperture, the inner plate being moveable from an operative position at which its aperture is in register with the inlet and outlet apertures to allow fluid to flow through the valve to a position at which its aperture is out of register with the inlet and outlet apertures to prevent fluid from flowing through the valve, and a pair of seals mounted, respectively, between the two outer plates and the inner plate and surrounding the inlet and outlet apertures when the inner plate is in its operative position, whereby, when the inner plate is in its operative position, fluid is prevented from flowing anywhere other than through the aperture in the inner plate, but, when the inner plate is in another position, fluid is allowed to flow throughout the valve.
  • the inner plate has a thicker portion and a thinner portion and its aperture is provided in its thicker portion, said pair of seals are mounted on adjacent surfaces of the outer plates and surround the inlet and outlet apertures, and, when the inner plate is at said another position, its thinner portion is adjacent the inlet and outlet apertures.
  • the inner plate includes a further aperture located in its thinner portion for allowing the flow of sterilizing fluid around the valve.
  • the outer plates are fixed and the inner plate is moveable.
  • the inner plate may be fixed and at least one of the outer plates may be rotatable.
  • Figure 1 shows schematically an exploded view of a valve embodying the present invention
  • Figure 2 shows the rotating plate of the valve of Figure 1;
  • Figure 3 is a cross section on the line III-III of Figure 2 ;
  • Figure 4 shows a seal plate for the valve of Figure 1;
  • Figure 5 is a top view of the valve of Figure 1;
  • Figure 6 is a partial cross section along the line VI-VI of Figure 5; and
  • FIG. 7 is a side view of the valve of Figure 1.
  • an aseptic pipe valve is connected to an inlet pipe 1 and an outlet pipe 2 to control the flow of material such as foodstuffs between the two pipes.
  • the valve comprises a top outer plate 3, a bottom outer plate 4 and an inner rotatable plate 5 sandwiched between the top plate and bottom plate.
  • the inner plate 5 is rotatable about the central axis A of the valve by means of a handle 6.
  • the valve is mounted off axis with respect to the inlet and outlet pipes 1 and 2.
  • Plates 3 and 4 are provided with respective apertures 7 and 8 which are in register and are aligned, in use, with the path between pipes 1 and 2.
  • Kidney shaped seals 9 are mounted above plate 4 and below plate 3. These are of predetermined thickness and have apertures of identical size to apertures 7 and 8. The seals 9 surround the apertures 7,8.
  • Plate 5 is divided into two generally semi ⁇ circular portions 5a and 5b of which 5b is thicker by a predetermined amount.
  • the thicker portion 5b also extends around the central axis A.
  • a first aperture 10 is provided in thicker portion 5b.
  • the aperture 10 is of substantially the same size as apertures 7 and 8 and is intended to be brought into an operative position in which it is in register with apertures 7 and 8 to allow the flow of fluid or other substances across the valve unimpeded.
  • Plate 5 may further comprise a second aperture 11 on the thinner part 5a of the plate. This is intended to be rotated to lie in register with apertures 7 and 8 to allow sterilization of the valve, as is described further below.
  • plate 5 is of smaller diameter than plates 3 and 4.
  • Plate 3 has a peripheral lip 3a of inside diameter substantially equal to the outside diameter of plate 5. Lip 3a abuts the top peripheral surface of plate 4 and its depth ensures the correct spacing of plates 3, 4 and 5. Consequently, when the thicker portion 5b of plate 5 lies between the seals 9 and 9, a tight sealing fit is obtained and fluid passing through the valve cannot escape into the valve body and can only flow through the apertures.
  • a gap is obtained between the top of plate 5 and the bottom of the seal 9 attached to the underside of plate 3 and between the bottom of plate 5 and the seal 9 attached to the top surface of plate 4 to allow a fluid, in particular a sterilizing fluid, normally saturated steam or superheated water, to flow throughout the body of the valve to sterilize it.
  • a fluid in particular a sterilizing fluid, normally saturated steam or superheated water
  • Figure 2 shows the central plate 5.
  • the plate 5 has been modified. Although it includes the aperture 10, the smaller aperture 11 for the passage of sterilizing fluid has been omitted. If there is sufficient clearance between portion 5b and the plates 3,4 during sterilizing, then a sterilizing aperture such as aperture 11 may not be required. Sterilizing fluid would then be forced to enter via inlet 1 and aperture 7 and to take a path along the top surface of plate 5, through aperture 10 and along the bottom surface of plate 5 and top surface of plate 4 before exiting at aperture 8 into outlet 2.
  • Figure 3 shows a cross section along line III-III of Figure 2 and shows how the thickness of the plate 5 increases between portions 5a and 5b.
  • Figure 4 shows one of the kidney shaped seals 9. This figure is generally to scale with Figure 2 and indicates approximately the comparative size of the kidney shaped seal 9 and aperture 8 in one example, although other relative sizes may be used where appropriate. It is of course important that a seal be made around the entire periphery of the aperture 8 so that fluid cannot leak out of the sides of the aperture.
  • the seals 9 are preferably of a rigid, inert material. This may be a plastics material, an example of which is
  • Figure 5 shows a plan view of the top plate illustrating the handle 6 which can be moved between a CLOSED position and an OPEN position guided by a detent mechanism (not shown) located in a groove 12.
  • the handle 6 is connected to the inner plate 5 such that rotation of the handle 6 rotates the inner plate 5.
  • the dashed circle C illustrates the edge of plate 5
  • dashed circle 10a illustrates the position of the aperture 10 of plate 5 when the handle ,is in the CLOSED position.
  • the aperture 10 is rotated therewith to lie in register with top aperture 7. Since this can be rapid, a virtually instant ON/OFF action is obtained.
  • the detent mechanism When sterilization is required, the detent mechanism may be lifted out of groove 12 to enable the handle to be further rotated to the STERILIZE position shown. At this position, the thinner portion 5a lies adjacent the seals 9, thus permitting sterilization of the apparatus.
  • a stop plate or block 13 may be mounted in the position shown on the top plate 3 to prevent further rotation of the handle after it has reached the STERILIZE position. The handle can only then be moved backwards through the angle from which it came to the CLOSED position.
  • Figure 6 shows a cross section through part of the assembled valve. The figure is shown with the apparatus in the OPEN position such that all the apertures are in register to allow passage of a fluid through the valve.
  • the top plate 3 includes a raised central axis portion 14 which receives a bush 15 which supports a spindle 16 connected to handle 6.
  • a disk 23 forms part of spindle 16 and is secured by means of bolts 24 to the inner plate 5 so that rotation of the handle 6 causes rotation of inner plate 5.
  • various seals in the form of O-rings or other elastomeric seals are provided to ensure the valve is maintained in an aseptic condition. A typical one of these is shown at 17.
  • the figure shows how the top plate 3 is clamped to the bottom plate 4 by a bolt 18.
  • the inner plate 5 is of smaller diameter than plates 3 and 4 and this figure shows how the thickness of plate 5 varies between portions 5a and 5b.
  • the top and bottom plates 3 and 4 are respectively provided with kidney shaped recesses 19 and 20 which include the apertures 7 and 8.
  • the recesses 19,20 are of approximately similar or slightly larger dimensions to the kidney shaped seals 9 for receiving these seals.
  • the recesses have peripheral grooves 19a,20a for receiving O-rings 21,22 for sealing the edges of the seals 9.
  • the grooves 19a,20a may also be kidney shaped or could be of other configurations, such as circular for example.
  • Figure 7 shows a side view of the valve in situ.
  • Handle 6 can be rotated, guided by groove 12 (which in this embodiment is shown as a grooved plate mounted on a generally planar top surface of the valve) to the end of the groove, whereupon a detent lifter 25 is raised to lift a detent pin 26 out of the groove 12 to enable the handle to be further rotated round to the STERILIZE position.
  • groove 12 which in this embodiment is shown as a grooved plate mounted on a generally planar top surface of the valve
  • valve described above is actuated manually by means of handle 6.
  • the valve may be actuated automatically by electronic, pneumatic, hydraulic or other control means.
  • the seals 9 may be provided on opposite surfaces on the inner plate 5 so as to surround its aperture 10.
  • the two seals 9 will be located, respectively, between the two outer plates 3,4 and will surround the inlet and outlet apertures 7,8.
  • the inner plate 5 may have a constant thickness.
  • the outer plates 3,4 should be formed so as to increase the spacing between their adjacent surfaces in their regions which are remote from the inlet and outer apertures 7,8. This increase in spacing between the adjacent surfaces permit fluid to flow throughout the valve when the inner plate 5 is in the STERILISE position.
  • the main parts of the valve may be constructed of metal, for example.
  • the seals may be made of metal but are more preferably made of a hard inert plastics material.
  • the central plate is rotated through between 0 and 90°, preferably 55° or 54° 50*, between the CLOSED and OPEN positions and through between 180 and 270°, preferably 210'

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Sliding Valves (AREA)

Abstract

Une vanne comprend une paire de plaques fixes (3, 4) possédant des ouvertures respectives (7, 8) d'entrée et de sortie en coïncidence et une plaque mobile (5) intercalée entre les plaques fixes. La plaque mobile (5) possède une partie plus épaisse (5b), une partie plus fine (5a) et une ovuerture (10) dans la partie plus épaisse. La plaque mobile (5) peut se déplacer depuis une position de fonctionnement dans laquelle son ouverture (10) coïncide avec les ouvertures d'entrée et de sortie (7, 8), ce qui permet au fluide de s'écouler à travers la vanne, jusqu'à une position dans laquelle son ouverture ne coïncide plus avec les autres ouvertures, ce qui empêche l'écoulement du fluide. La vanne comprend des points (9) montés sur les surfaces adjacentes des plaques fixes (3, 4) et entourant les ouvertures d'entrée et de sortie (7, 8). Lorsque la plaque mobile (5) se trouve dans sa position de fonctionnement, le fluide ne peut s'écouler que par l'ouverture (10) de la plaque mobile (5). Lorsque la plaque mobilee (5) est en position de stérilisation, position dans laquelle sa partie plus fine (5a) est adjacente aux ouvertures d'entrée et de sortie (7, 8), le fluide de stérilisation peut s'écouler à travers la vanne.
PCT/GB1992/001130 1991-07-09 1992-06-22 Vanne WO1993001431A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919114729A GB9114729D0 (en) 1991-07-09 1991-07-09 Valve
GB9114729.8 1991-07-09

Publications (1)

Publication Number Publication Date
WO1993001431A1 true WO1993001431A1 (fr) 1993-01-21

Family

ID=10698011

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/001130 WO1993001431A1 (fr) 1991-07-09 1992-06-22 Vanne

Country Status (3)

Country Link
GB (1) GB9114729D0 (fr)
WO (1) WO1993001431A1 (fr)
ZA (1) ZA924612B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691981B1 (en) 1998-06-19 2004-02-17 Robert Hart Gate valve
US7510632B2 (en) 2002-09-10 2009-03-31 Wisconsin Alumni Research Foundation Plasma treatment within dielectric fluids
WO2010137787A1 (fr) 2009-05-28 2010-12-02 Woongjin Coway Co., Ltd. Dispositif de lavage pour appareil de traitement d'eau et procédé de lavage de celui-ci
WO2016020700A1 (fr) * 2014-08-07 2016-02-11 Clyde Process Limited Diaphragme réglable à trous multiples d'appareil de transport pneumatique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587989A (en) * 1985-02-20 1986-05-13 Mayhew Jr John D Turn disc slide valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587989A (en) * 1985-02-20 1986-05-13 Mayhew Jr John D Turn disc slide valve

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691981B1 (en) 1998-06-19 2004-02-17 Robert Hart Gate valve
US7510632B2 (en) 2002-09-10 2009-03-31 Wisconsin Alumni Research Foundation Plasma treatment within dielectric fluids
WO2010137787A1 (fr) 2009-05-28 2010-12-02 Woongjin Coway Co., Ltd. Dispositif de lavage pour appareil de traitement d'eau et procédé de lavage de celui-ci
EP2435157B1 (fr) * 2009-05-28 2020-02-05 Woongjin Coway Co., Ltd. Dispositif de lavage pour appareil de traitement d'eau et procédé de lavage de celui-ci
WO2016020700A1 (fr) * 2014-08-07 2016-02-11 Clyde Process Limited Diaphragme réglable à trous multiples d'appareil de transport pneumatique
KR20170039208A (ko) * 2014-08-07 2017-04-10 솅크 프로세스 유케이 리미티드 가압수송장치에서 조정 가능한 다중-홀 오리피스 플레이트
CN106660716A (zh) * 2014-08-07 2017-05-10 申克加工英国有限公司 气动输送装置中的可调节多孔孔板
US10000347B2 (en) 2014-08-07 2018-06-19 Schenck Process UK Limited Adjustable multi-hole orifice in a pneumatic conveying apparatus
KR102337500B1 (ko) * 2014-08-07 2021-12-10 솅크 프로세스 유케이 리미티드 가압수송장치에서 조정 가능한 다중-홀 오리피스 플레이트

Also Published As

Publication number Publication date
GB9114729D0 (en) 1991-08-28
ZA924612B (en) 1993-03-31

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