WO2004018915A1 - On/off valve - Google Patents

On/off valve Download PDF

Info

Publication number
WO2004018915A1
WO2004018915A1 PCT/DK2003/000549 DK0300549W WO2004018915A1 WO 2004018915 A1 WO2004018915 A1 WO 2004018915A1 DK 0300549 W DK0300549 W DK 0300549W WO 2004018915 A1 WO2004018915 A1 WO 2004018915A1
Authority
WO
WIPO (PCT)
Prior art keywords
shut
opening
box
inlet
outlet
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.)
Ceased
Application number
PCT/DK2003/000549
Other languages
French (fr)
Inventor
Einar Eriksen
Leif Dambo Jensen
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.)
SP Group AS
Original Assignee
SP Group AS
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 SP Group AS filed Critical SP Group AS
Priority to AU2003255055A priority Critical patent/AU2003255055A1/en
Priority to EP03792148A priority patent/EP1543262A1/en
Publication of WO2004018915A1 publication Critical patent/WO2004018915A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16K5/04—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 cylindrical surfaces; Packings therefor
    • F16K5/0407—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 cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means

Definitions

  • the invention concerns a manually operated on/off valve, including a plastic-moulded box with an inlet and outlet and an essentially cylindrical opening in which a rotary plastic shut-off device is embedded, and which in the first position prevents a flow from the inlet to the outlet and in the second position allows a flow from the inlet to the outlet via a passage in the shut-off device.
  • Such a valve forms part of, for example, medico-surgical drainage systems where the valve can be operated by the user/carrier.
  • valve With a view to user comfort it is essential that the valve is completely tight when it is to prevent a flow from the inlet to the outlet as well as at the ends of the opening in the valve box serving as the bearing of the shut-off device.
  • the cylindrical opening in the box is provided with an outward facing conical surface designed to interact with a corresponding conical surface on the shut-off device where the shut-off device is embedded by means of a process and/or of a material causing the shut-off device to shrink more than the box upon cooling and causing cross sections of the box opening to deviate from a circular form in such a way that the extent of the shut-off device at right angles to the passage is slightly larger than in the direction of the passage.
  • shut-off device shrinks upon cooling, its conical surfaces will be pressed against the corresponding surfaces in the cylindrical opening, thereby achieving a particularly good sealing at the ends of the opening. Because of the deviation from the circular form, the shut-off device embedded in the opening does not have circular cross sections either, but in its closed position is pressed tightly against the orifices of the inlet and outlet in the box opening to prevent leakage along the exterior of the shut-off device.
  • Figure 1 shows a sectional view of the axis of the cylindrical opening in a valve according to the invention
  • Figure 2 shows a sectional view of the valve at right angles to the axis of the opening with the valve open
  • Figure 3 shows the same, but with the valve closed.
  • the valve shown on the drawing includes a plastic-moulded box 1 with an inlet 2 and an outlet 3 and an essentially cylindrical opening 4.
  • a rotary shut-off device 5 of plastic is embedded, which in the first position ( Figure 3) prevents a flow from the inlet 2 to the outlet 3, but in the second position ( Figure 2) allows a flow via a passage 6 in the shut-off device.
  • the cylindrical opening 4 has an outward-facing conical surface 7 which is designed to interact with a corresponding conical bearing surface on the shut-off device 5.
  • the shut-off device 5 is embedded in the cylindrical opening 4 by means of such a method and/or of such a material that upon cooling the shut-off device shrinks more than the box 1, see Figures 1 and 2. This causes the bearing surfaces of the shut-off device 5 to be pressed against the outward-facing conical surfaces 7 in the opening 4 to the effect that they are tight-fitting (see Figure 1) and that when the valve is open, the shut-off device 5 does not fill the opening 4 along its circumference (see Figure 2).
  • cross sections of the box 1 opening 4 deviate from a circular form to such an extent that the extent of the shut-off device 5 at right angles to the passage 6 is slightly larger than in the direction of the passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Taps Or Cocks (AREA)

Abstract

A manually operated on/off valve includes a plastic-moulded box (1) with an inlet (2) and an outlet (3) and an essentially cylindrical opening (4) with an embedded rotary shut-off device (5) of plastic. In the first shut-off device (5) position, a flow from the inlet to the outlet is prevented, and in the second position, a flow from the inlet to the outlet is allowed via a passage (6) in the shut-off device (5). Such a valve forms part of, for example, medico-surgical drainage systems where the valve can be operated by the user/carrier. To ensure that the valve is completely tight when it is to prevent a flow from the inlet (2) to the outlet (3) as well as at the ends of the opening in the valve box (4) serving as the bearing of the shut-off device (5), according to the present invention it is suggested that at opposite ends the cylindrical opening (4) in the box is provided with an outward-facing conical surface (7) designed to interact with a corresponding conical surface on the shut-off device (5) where the shut-off device is embedded by means of a process and/or of a material causing the shut-off device (5) to shrink more than the box (1) upon cooling and causing cross sections of the box opening (4) to deviate from a circular form in such a way that the extent of the shut-off device (5) at right angles to the passage (6) is slightly larger than in the direction of the passage. When the shut-off device (5) shrinks upon cooling, its conical surfaces will be pressed against the corresponding surface (7) in the cylindrical opening, thereby achieving a particularly good sealing at the ends of the opening. Because of the deviation from the circular form, the shut-off device embedded in the opening does not have circular cross sections either, but in the closed position is pressed tightly against the orifices of the inlet and outlet in the box opening to prevent leakage along the exterior of the shut-off device.

Description

On/off valve
The invention concerns a manually operated on/off valve, including a plastic-moulded box with an inlet and outlet and an essentially cylindrical opening in which a rotary plastic shut-off device is embedded, and which in the first position prevents a flow from the inlet to the outlet and in the second position allows a flow from the inlet to the outlet via a passage in the shut-off device.
Such a valve forms part of, for example, medico-surgical drainage systems where the valve can be operated by the user/carrier.
With a view to user comfort it is essential that the valve is completely tight when it is to prevent a flow from the inlet to the outlet as well as at the ends of the opening in the valve box serving as the bearing of the shut-off device.
In order to achieve this, according to the present invention it is suggested that at opposite ends the cylindrical opening in the box is provided with an outward facing conical surface designed to interact with a corresponding conical surface on the shut-off device where the shut-off device is embedded by means of a process and/or of a material causing the shut-off device to shrink more than the box upon cooling and causing cross sections of the box opening to deviate from a circular form in such a way that the extent of the shut-off device at right angles to the passage is slightly larger than in the direction of the passage.
When the shut-off device shrinks upon cooling, its conical surfaces will be pressed against the corresponding surfaces in the cylindrical opening, thereby achieving a particularly good sealing at the ends of the opening. Because of the deviation from the circular form, the shut-off device embedded in the opening does not have circular cross sections either, but in its closed position is pressed tightly against the orifices of the inlet and outlet in the box opening to prevent leakage along the exterior of the shut-off device.
The invention will be explained in further detail below in connection with the drawing where
Figure 1 shows a sectional view of the axis of the cylindrical opening in a valve according to the invention; Figure 2 shows a sectional view of the valve at right angles to the axis of the opening with the valve open; and Figure 3 shows the same, but with the valve closed.
The valve shown on the drawing includes a plastic-moulded box 1 with an inlet 2 and an outlet 3 and an essentially cylindrical opening 4. In this opening, a rotary shut-off device 5 of plastic is embedded, which in the first position (Figure 3) prevents a flow from the inlet 2 to the outlet 3, but in the second position (Figure 2) allows a flow via a passage 6 in the shut-off device.
As appears from Figure 1 , at opposite ends the cylindrical opening 4 has an outward-facing conical surface 7 which is designed to interact with a corresponding conical bearing surface on the shut-off device 5.
During manufacturing, the shut-off device 5 is embedded in the cylindrical opening 4 by means of such a method and/or of such a material that upon cooling the shut-off device shrinks more than the box 1, see Figures 1 and 2. This causes the bearing surfaces of the shut-off device 5 to be pressed against the outward-facing conical surfaces 7 in the opening 4 to the effect that they are tight-fitting (see Figure 1) and that when the valve is open, the shut-off device 5 does not fill the opening 4 along its circumference (see Figure 2).
However, cross sections of the box 1 opening 4 deviate from a circular form to such an extent that the extent of the shut-off device 5 at right angles to the passage 6 is slightly larger than in the direction of the passage.
A comparison between Figures 2 and 4 shows that because of the deviation from a circular form, the shut-off device 5 embedded in the opening 4 does not have circular cross sections either, but in the closed position is pressed tightly against the orifices of the inlet 2 and the outlet 3 in the box opening 4 to prevent leakage along the exterior of the shut-off device.

Claims

PATENT CLAIM
A manually operated on/off valve, including a plastic-moulded box (1) with an inlet (2) and an outlet (3) and an essentially cylindrical opening (4) in which a rotary shut-off device (5) of plastic is embedded, and which in the first position prevents a flow from the inlet (2) to the outlet (3) and in the second position allows a flow from the inlet (2) to the outlet (3) via a passage (6) in the shut-off device (5), c h a r a c t e r i s e d by the fact that at opposite ends the cylindrical opening (4) in the box (1 ) is provided with an outward-facing conical surface (7) designed to interact with a corresponding conical surface on the shut-off device (5) where the shut-off device is embedded by means of a process and/or of a material causing the shut-off device to shrink more than the box (1 ) upon cooling and causing cross sections of the box (1 ) opening (4) to deviate from a circular form in such a way that the extent of the shut-off device (5) at right angles to the passage (6) is slightly larger than in the direction of the passage.
PCT/DK2003/000549 2002-08-20 2003-08-19 On/off valve Ceased WO2004018915A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003255055A AU2003255055A1 (en) 2002-08-20 2003-08-19 On/off valve
EP03792148A EP1543262A1 (en) 2002-08-20 2003-08-19 On/off valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200201228A DK174606B1 (en) 2002-08-20 2002-08-20 Manually operated on-off valve comprises molded plastic housing with inlet and outlet, together with cylindrical opening in which plastic rotatable cut-off component is molded
DKPA200201228 2002-08-20

Publications (1)

Publication Number Publication Date
WO2004018915A1 true WO2004018915A1 (en) 2004-03-04

Family

ID=8161247

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2003/000549 Ceased WO2004018915A1 (en) 2002-08-20 2003-08-19 On/off valve

Country Status (4)

Country Link
EP (1) EP1543262A1 (en)
AU (1) AU2003255055A1 (en)
DK (1) DK174606B1 (en)
WO (1) WO2004018915A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2478267A (en) * 2008-10-23 2011-09-07 Alan Frederick Rees Ball valve
EP3048345A1 (en) 2015-01-21 2016-07-27 Anheuser-Busch InBev S.A. Stopcock for beverage dispenser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326519A (en) * 1964-03-04 1967-06-20 Duriron Co Plug valves
US4478388A (en) * 1982-11-01 1984-10-23 Xomox Corporation Plug valve with removable lip insert means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326519A (en) * 1964-03-04 1967-06-20 Duriron Co Plug valves
US4478388A (en) * 1982-11-01 1984-10-23 Xomox Corporation Plug valve with removable lip insert means

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2478267A (en) * 2008-10-23 2011-09-07 Alan Frederick Rees Ball valve
EP3048345A1 (en) 2015-01-21 2016-07-27 Anheuser-Busch InBev S.A. Stopcock for beverage dispenser
US10371268B2 (en) 2015-01-21 2019-08-06 Anheuser-Busch Inbev S.A. Stopcock for beverage dispenser

Also Published As

Publication number Publication date
DK174606B1 (en) 2003-07-21
EP1543262A1 (en) 2005-06-22
AU2003255055A1 (en) 2004-03-11

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