WO2023042236A1 - High containment valve, especially adapted for intercepting loose solid products transferred in ducts - Google Patents

High containment valve, especially adapted for intercepting loose solid products transferred in ducts Download PDF

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Publication number
WO2023042236A1
WO2023042236A1 PCT/IT2022/050251 IT2022050251W WO2023042236A1 WO 2023042236 A1 WO2023042236 A1 WO 2023042236A1 IT 2022050251 W IT2022050251 W IT 2022050251W WO 2023042236 A1 WO2023042236 A1 WO 2023042236A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
axis
housed
central portion
ring gasket
Prior art date
Application number
PCT/IT2022/050251
Other languages
French (fr)
Inventor
Gianfranco Nelli
Raffaello BEVILACQUA
Original Assignee
Sterivalves S.R.L.
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 Sterivalves S.R.L. filed Critical Sterivalves S.R.L.
Publication of WO2023042236A1 publication Critical patent/WO2023042236A1/en

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Classifications

    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0615—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor the angle the spindle makes with the housing being other than 90 degrees
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0689—Packings between housing and plug
    • 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
    • B65G53/4625—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow
    • B65G53/4633—Turnable elements, e.g. rotary wheels with pockets or passages for material with axis of turning perpendicular to flow the element having pockets, rotated from charging position to discharging position, i.e. discrete flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
    • G01F11/24—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for fluent solid material

Definitions

  • the present invention belongs to the technical field of valves and in particular, but not exclusively, to the technical field of valves used to intercept and dose loose solid products, such as powders, granules, pellets, and the like, which are transferred and/or discharged along conduits .
  • the present invention belongs to the technical field of high-containment or leak-tight valves, i.e., devices that at certain stages of operation are capable of maintaining a pressure differential between upstream and downstream.
  • the present device belongs to the technical field of valves in which the intercepting member comprises a rotor on which a gasket acts.
  • valves In the field of transferring and intercepting loose solid products, valves are known in which the intercepting member comprises a rotor, usually with a horizontal axis, in which radial compartments are defined, which, progressively during the rotation of the rotor, are filled from above by gravity and emptied downward, again by the force of gravity.
  • the outer edges of the rotor define a rotational surface, such as an ellipsoid or a sphere, and the rotor is rotationally housed within a corresponding cavity defined in a valve body that comprises an upper half-body opposed to a lower half-body by the interposition of appropriate static gasket s of elastomeric material .
  • the outer surface of the rotor is very close to the inner surface defined by the two half-bodies .
  • valves are known in which the two half-bodies are opposed to each other according to a surface oblique to the axis of the rotor .
  • valves are known that have a lobe rotor in which the perimeter of a first pair of coplanar lobes describes a circumference slightly larger than that described by the perimeter of the other pairs of coplanar lobes , so that at each half-rotation the first pair of lobes slightly interferes with a circumferential gasket that protrudes slightly from the inner surface inside the valve body .
  • the ob j ect of the present invention is to provide a valve for the interception of loose solid product s that ensures a high seal between upstream and downstream and whose sealing gasket i s not sub j ect to high wear due to cyclic rubbing .
  • valve in which the sealing between the valve body and the rotor is achieved by means of a pneumatic-type ring gasket , which expands to contrast against a corresponding spherical zone def ined on the outer surface of the central portion of an innovative spherical rotor ; inside the latter is defined a plurality of radial compartment s whose axes of symmetry lie in the plane orthogonal to the axis of rotation of the spherical rotor pas sing through the center of the latter .
  • spherical rotor is used to refer to a rotor whose outer surface defines any rotational surface , such as indeed a sphere , but also, for example , an ellipsoid .
  • the radial compartment s are configured as truncated cones .
  • the latter is shaped in such a way that on it s outer surface , around each radial compartment , a spherical zone is defined against which the pneumatic gasket expands until it contrast s this spherical zone so as to be seal-tight .
  • the valve body comprises an upper half-body facing and opposing a corresponding lower half-body by the interposition of suitable static gasket s of elastomeric material , an opening for the pas sage of loose product is defined in each half-body, preferably the two openings are coaxial along an axis orthogonal to the axis of the rotor .
  • the pneumatic gasket is housed within a corresponding circumferential s lot defined on the inner surface of one of the two half-bodies , around the opening for the pas sage of loose product .
  • the rotor actuating as sembly must be able to stop the rotation of the rotor so that the axis of one of the compartment s coincides with the axis of the pneumatic gasket .
  • the pneumatic ring gasket provides the seal between the rotor and the upper half-body through which the loose product enters the valve , or the same gasket could be placed between the rotor and the lower half-body, but if neces sary two pneumatic ring gasket s could also be used, one for each half-body .
  • the spherical area against which the pneumatic gasket expands should have a good surface finish .
  • the contact between the two half-bodies is according to a plane oblique to the axis of the rotor, to improve the seal between the half-shafts and the tubular elements in which they are respectively rotationally housed.
  • Fig. 1 shows an overall perspective view of the assembled valve complete with motor.
  • Fig. 2. shows a vertical section of the assembled valve according to a plane passing through the axis of the rotor (1) , more precisely according to the A-A plane shown in Fig. 4.
  • FIG. 3 shows an enlarged detail of the section shown in Fig. 2, in which the pneumatic gasket (3) is more clearly visible.
  • the gasket (3) is represented deflated and consequently not adhering to the surface of the rotor (1) .
  • Fig. 4 shows a top view of the assembled valve complete with motor.
  • FIG. 5 shows a perspective view of the rotor (1) in which four compartments are defined (11) .
  • FIG. 6 shows a longitudinal section of the rotor (1) •
  • Fig. 7 shows a cross section of the rotor (1) , more precisely according to the B-B plane shown in Fig. 6.
  • Fig. 8 shows an axial view of the rotor (1) .
  • the present invention comprises a valve body (2) in which is housed a rotor (1) whose central portion (12) is shaped as a sphere in which radial compartments (11) are defined.
  • the valve body (2) comprises an upper half-body (21) and a lower half-body (22) opposed to each other according to a surface oblique to the rotor (1) axis.
  • Two horizontal, coaxial half-shafts (13, 14) protrude from the central portion of the rotor, and engage rotationally in corresponding tubular elements defined respectively in each half-body (21, 22) .
  • a vertical axis opening is defined in each halfbody (21, 22) for the passage of loose product.
  • a circular slot is defined in which a pneumatic ring gasket (3) is housed.
  • the radial compartments (11) defined in the central portion (12) of the rotor (1) develop along a respective axis lying on the plane orthogonal to the axis of the rotor (1) passing through the center of the central portion (12) , so that on the outer surface of the latter, around the edge of each of said compartments (11) , a respective spherical zone (15) is defined against which the pneumatic ring gasket (3) expands when the axis of the compartment is coaxial with the axis of the opening for the passage of the loose product.
  • the actuation means (4) of the rotor control the angular position of the latter and allow the inflation of the pneumatic gasket (3) only when the axis of a compartment (11) is aligned with the axis of the opening for the passage of loose product; the pneumatic ring gasket (3) is inflated with air or other gas so that it expands to adhere to the spherical area (15) of the rotor (1) . Conversely, while the rotor (1) is rotating, the pneumatic gasket (3) is deflated and does not contact the surface of the rotor (1) .
  • the illustrated embodiment includes two scraper rings (31, 32) concentric to the pneumatic ring gasket (3) on the inside and outside of the latter, respectively.
  • the scraper rings are concentric to the pneumatic ring gasket (3) on the inside and outside of the latter, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Taps Or Cocks (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Chutes (AREA)

Abstract

A high-containment valve with a spherical rotor in which radial compartments are defined and in which a pneumatic ring gasket expands so as to form a sealing against one of the spherical zones surrounding the edge of the compartments defined in the spherical rotor.

Description

DESCRIPTION
Title
HIGH CONTAINMENT VALVE, ESPECIALLY ADAPTED FOR INTERCEPTING LOOSE SOLID PRODUCTS TRANSFERRED IN DUCTS.
★ ★ ★ ★ ★ ★
Technical field
[0001] The present invention belongs to the technical field of valves and in particular, but not exclusively, to the technical field of valves used to intercept and dose loose solid products, such as powders, granules, pellets, and the like, which are transferred and/or discharged along conduits .
[0002] More specifically, the present invention belongs to the technical field of high-containment or leak-tight valves, i.e., devices that at certain stages of operation are capable of maintaining a pressure differential between upstream and downstream.
[0003] In particular, the present device belongs to the technical field of valves in which the intercepting member comprises a rotor on which a gasket acts.
Present status of the art
[0004] In the field of transferring and intercepting loose solid products, valves are known in which the intercepting member comprises a rotor, usually with a horizontal axis, in which radial compartments are defined, which, progressively during the rotation of the rotor, are filled from above by gravity and emptied downward, again by the force of gravity.
[0005] In known solutions, the outer edges of the rotor define a rotational surface, such as an ellipsoid or a sphere, and the rotor is rotationally housed within a corresponding cavity defined in a valve body that comprises an upper half-body opposed to a lower half-body by the interposition of appropriate static gasket s of elastomeric material .
[ 0006] To reduce the risk of leakage , the outer surface of the rotor is very close to the inner surface defined by the two half-bodies .
[ 0007 ] An opening, usually with a vertical axis , is defined in each half-body for the pas sage of loose product . [ 0008 ] Two half-shaft s protrude horizontally from the rotor along the axis of rotation, which rotationally engage in two corresponding tubular element s , respectively defined in each half-body .
[0009] To achieve a better seal on the rotor half-shaft s , valves are known in which the two half-bodies are opposed to each other according to a surface oblique to the axis of the rotor .
[0010 ] In particular, valves are known that have a lobe rotor in which the perimeter of a first pair of coplanar lobes describes a circumference slightly larger than that described by the perimeter of the other pairs of coplanar lobes , so that at each half-rotation the first pair of lobes slightly interferes with a circumferential gasket that protrudes slightly from the inner surface inside the valve body .
[ 0011 ] Sealing between upstream and downstream of the valve occurs when the larger lobes interfere with and engage the circumferential gasket , thus every half-turn of the rotor, so it is neces sary for the rotation of the rotor to be stopped at exactly one of the two predetermined positions . [ 0012 ] It should be pointed out that in valves of the known type , the circumferential gasket is sub j ect to continuous rubbing, since it is cyclically in forced contact with the edge of the larger pair of lobes , and this cyclic rubbing quickly wears out the ring gasket , with the risk that the loose product may be contaminated with fragment s and particles detached from the elastomeric material with which ring gasket s are usually made .
[ 0013 ] In addition, lobes that do not provide a tight seal present the risk of leakage between one lobe and the other .
Object and summary of the invention
[0014 ] The ob j ect of the present invention is to provide a valve for the interception of loose solid product s that ensures a high seal between upstream and downstream and whose sealing gasket i s not sub j ect to high wear due to cyclic rubbing .
[0015 ] This result is obtained thanks to a valve in which the sealing between the valve body and the rotor is achieved by means of a pneumatic-type ring gasket , which expands to contrast against a corresponding spherical zone def ined on the outer surface of the central portion of an innovative spherical rotor ; inside the latter is defined a plurality of radial compartment s whose axes of symmetry lie in the plane orthogonal to the axis of rotation of the spherical rotor pas sing through the center of the latter .
[ 0016] Diametrically protruding from the central portion of the rotor are two half-shaft s that engage corresponding tubular element s defined in the valve body, to at least one of said half-shaft s are connected appropriate actuating means for rotation and control of the angular position of the rotor .
[0017 ] It should be noted that in the present patent text the term spherical rotor is used to refer to a rotor whose outer surface defines any rotational surface , such as indeed a sphere , but also, for example , an ellipsoid .
[ 0018 ] According to a preferred embodiment the radial compartment s are configured as truncated cones . [ 0019] To ensure the maintenance of the pres sure dif ferential between upstream and downstream of the rotor, the latter is shaped in such a way that on it s outer surface , around each radial compartment , a spherical zone is defined against which the pneumatic gasket expands until it contrast s this spherical zone so as to be seal-tight .
[ 0020 ] The valve body comprises an upper half-body facing and opposing a corresponding lower half-body by the interposition of suitable static gasket s of elastomeric material , an opening for the pas sage of loose product is defined in each half-body, preferably the two openings are coaxial along an axis orthogonal to the axis of the rotor . The pneumatic gasket is housed within a corresponding circumferential s lot defined on the inner surface of one of the two half-bodies , around the opening for the pas sage of loose product .
[ 0021 ] When the rotor is rotating, the pneumatic gasket is deflated and does not interfere with the rotor surface ; when the rotor is stationary, the pneumatic ring gasket is inflated and adheres to the spherical area .
[ 0022 ] For proper operation of the valve , the rotor actuating as sembly must be able to stop the rotation of the rotor so that the axis of one of the compartment s coincides with the axis of the pneumatic gasket .
[ 0023 ] Preferably the pneumatic ring gasket provides the seal between the rotor and the upper half-body through which the loose product enters the valve , or the same gasket could be placed between the rotor and the lower half-body, but if neces sary two pneumatic ring gasket s could also be used, one for each half-body .
[ 0024 ] To improve sealing, the spherical area against which the pneumatic gasket expands should have a good surface finish . [0025] According to a preferred embodiment, in order to improve the sealing performance of the pneumatic ring gasket, it is possible to use scraper rings, partially protruding from corresponding circumferential slots defined in the half-body housing the pneumatic ring gasket, inside and outside the latter, respectively. These scraper rings prevent dust from reaching the spherical zone against which the pneumatic gasket expands, preventing the buildup of loose product resulting in losses of sealing performance.
[0026] Very advantageously, the contact between the two half-bodies is according to a plane oblique to the axis of the rotor, to improve the seal between the half-shafts and the tubular elements in which they are respectively rotationally housed.
Brief description of the drawings
[0027] Fig. 1 shows an overall perspective view of the assembled valve complete with motor.
[0028] Fig. 2. shows a vertical section of the assembled valve according to a plane passing through the axis of the rotor (1) , more precisely according to the A-A plane shown in Fig. 4.
[0029] Fig. 3 shows an enlarged detail of the section shown in Fig. 2, in which the pneumatic gasket (3) is more clearly visible. The gasket (3) is represented deflated and consequently not adhering to the surface of the rotor (1) .
[0030] Fig. 4 shows a top view of the assembled valve complete with motor.
[0031] Fig. 5 shows a perspective view of the rotor (1) in which four compartments are defined (11) .
[0032] Fig. 6 shows a longitudinal section of the rotor (1) •
[0033] Fig. 7 shows a cross section of the rotor (1) , more precisely according to the B-B plane shown in Fig. 6. [0034] Fig. 8 shows an axial view of the rotor (1) . Detailed description of an embodiment of the invention [0035] In the embodiment shown in the figures, the present invention comprises a valve body (2) in which is housed a rotor (1) whose central portion (12) is shaped as a sphere in which radial compartments (11) are defined.
[0036] The valve body (2) comprises an upper half-body (21) and a lower half-body (22) opposed to each other according to a surface oblique to the rotor (1) axis.
[0037] Two horizontal, coaxial half-shafts (13, 14) protrude from the central portion of the rotor, and engage rotationally in corresponding tubular elements defined respectively in each half-body (21, 22) .
[0038] A vertical axis opening is defined in each halfbody (21, 22) for the passage of loose product.
[0039] On the inner surface of the upper half-body (21) , around the opening for the passage of loose product, a circular slot is defined in which a pneumatic ring gasket (3) is housed.
[0040] The radial compartments (11) defined in the central portion (12) of the rotor (1) develop along a respective axis lying on the plane orthogonal to the axis of the rotor (1) passing through the center of the central portion (12) , so that on the outer surface of the latter, around the edge of each of said compartments (11) , a respective spherical zone (15) is defined against which the pneumatic ring gasket (3) expands when the axis of the compartment is coaxial with the axis of the opening for the passage of the loose product.
[0041] The actuation means (4) of the rotor control the angular position of the latter and allow the inflation of the pneumatic gasket (3) only when the axis of a compartment (11) is aligned with the axis of the opening for the passage of loose product; the pneumatic ring gasket (3) is inflated with air or other gas so that it expands to adhere to the spherical area (15) of the rotor (1) . Conversely, while the rotor (1) is rotating, the pneumatic gasket (3) is deflated and does not contact the surface of the rotor (1) .
[0042] To reduce the risk of fouling the area where the pneumatic gasket (3) expands against the rotor (1) , the illustrated embodiment includes two scraper rings (31, 32) concentric to the pneumatic ring gasket (3) on the inside and outside of the latter, respectively. The scraper rings
(31, 32) , like the pneumatic ring gasket (3) also partially protrude from respective perimetrical slots excavated in the inner surface of the upper half-body (21) , coaxial to the opening for the passage of loose product.

Claims

1. High containment valve comprising a rotor (1) rotationally housed inside a corresponding cavity defined in a valve body
(2) , the latter comprising an upper half-body (21) and a lower half-body (22) , said rotor (1) having a central portion (12) integrally connected to two coaxial half shafts (13, 14) , which protrude diametrically from said central portion (12) and rotationally engage themselves in two corresponding tubular elements respectively defined in each of said half-bodies (21, 22) ; in each of the latter an opening is defined for the passage of the loose product and on the internal surface of at least one of said half-bodies (21, 22) , around said opening for the passage of the loose product, a circular slot is defined in which a corresponding inflatable pneumatic ring gasket (3) is housed, characterized in that said central portion (12) of said rotor (1) is shaped like a sphere inside which radial compartments are defined (11) which develop according to a respective axis which radially departs from the axis of said rotor (1) and lies on the plane orthogonal to the latter passing through the centre of said central portion (12) , so that on the external surface of the latter, around the edge of each of said compartments (11) , a respective spherical zone (15) is defined against which said pneumatic ring gasket (3) expands each time the latter is inflated, when the axis of the compartment (11) is coaxial with the axis of the opening defined on the half-body in which said pneumatic ring gasket
(3) is housed and by the fact of comprising actuation means
(4) adapted to control the angular position of said rotor (1) •
2. High containment valve according to the preceding claim 1, characterized in that on the internal surface of the halfbody in which said pneumatic ring gasket (3) is housed, one or more circumferential slots are defined, concentric internally and/or externally to the circumferential slot in which said pneumatic ring gasket (3) is housed, in each of which is housed a respective scraper ring (31, 32) which protrudes until it touches the external surface of said central portion (12) of said rotor (1) .
3. Valve according to one of the preceding claims characterized in that said two upper (21) and lower (22) half-bodies are opposed to each other according to a surface oblique with respect to the axis of said rotor (1) .
★ ★ ★
PCT/IT2022/050251 2021-09-17 2022-09-15 High containment valve, especially adapted for intercepting loose solid products transferred in ducts WO2023042236A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000023993A IT202100023993A1 (en) 2021-09-17 2021-09-17 HIGH CONTAINMENT VALVE, ESPECIALLY SUITABLE FOR SHUT-OFF OF BULK SOLID PRODUCTS TRANSFERRED IN PIPELINES
IT102021000023993 2021-09-17

Publications (1)

Publication Number Publication Date
WO2023042236A1 true WO2023042236A1 (en) 2023-03-23

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PCT/IT2022/050251 WO2023042236A1 (en) 2021-09-17 2022-09-15 High containment valve, especially adapted for intercepting loose solid products transferred in ducts

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WO (1) WO2023042236A1 (en)

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CH147891A (en) * 1930-01-18 1931-06-30 Bonjour Maurice Device for ensuring a tight seal between the facing surfaces of two bodies which can be moved relative to one another.
US3489158A (en) * 1966-11-16 1970-01-13 Gen Electric Canada Tube closure ball valve
WO1992012368A1 (en) * 1990-12-28 1992-07-23 Terlet N.V. Spherical valve
NL9400956A (en) * 1994-06-13 1996-01-02 Wolters Laurentius Gerardus J Seal
EP1066210A1 (en) * 1997-12-29 2001-01-10 Privet OY Device for feeding material
EP1165413A1 (en) * 1999-03-03 2002-01-02 Charles Deprat Ball valve for controlling throughput on pulverulent or granulated products
EP1580151A1 (en) * 2004-03-25 2005-09-28 Innovene Europe Limited Valve
WO2008058539A1 (en) * 2006-11-14 2008-05-22 Bang & Olufsen Medicom A/S An inhaler with a forward metering valve
US20100288374A1 (en) * 2007-10-19 2010-11-18 Single Buoy Moorings Inc. Split valve
US20110101023A1 (en) * 2009-11-05 2011-05-05 Edwin Chan Sealed dispenser for metered fluent materials
EP2351699A1 (en) * 2008-11-14 2011-08-03 Mitsui Engineering & Shipbuilding Co., Ltd. Conveying device used under condition having large pressure difference, and method of controlling same
US20110204001A1 (en) * 2008-10-30 2011-08-25 Gaudfrin Device for Extracting Cakes Resulting from Pressurised Disc Filtration, and Associated Extraction Method
US20120319023A1 (en) * 2011-06-16 2012-12-20 Naberhaus P Christian Solids processing valve

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH147891A (en) * 1930-01-18 1931-06-30 Bonjour Maurice Device for ensuring a tight seal between the facing surfaces of two bodies which can be moved relative to one another.
US3489158A (en) * 1966-11-16 1970-01-13 Gen Electric Canada Tube closure ball valve
WO1992012368A1 (en) * 1990-12-28 1992-07-23 Terlet N.V. Spherical valve
NL9400956A (en) * 1994-06-13 1996-01-02 Wolters Laurentius Gerardus J Seal
EP1066210A1 (en) * 1997-12-29 2001-01-10 Privet OY Device for feeding material
EP1165413A1 (en) * 1999-03-03 2002-01-02 Charles Deprat Ball valve for controlling throughput on pulverulent or granulated products
EP1580151A1 (en) * 2004-03-25 2005-09-28 Innovene Europe Limited Valve
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