BE1018092A3 - Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve - Google Patents

Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve Download PDF

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Publication number
BE1018092A3
BE1018092A3 BE200800216A BE200800216A BE1018092A3 BE 1018092 A3 BE1018092 A3 BE 1018092A3 BE 200800216 A BE200800216 A BE 200800216A BE 200800216 A BE200800216 A BE 200800216A BE 1018092 A3 BE1018092 A3 BE 1018092A3
Authority
BE
Belgium
Prior art keywords
valve
butterfly
butterfly valve
longitudinal axis
shaft
Prior art date
Application number
BE200800216A
Other languages
Dutch (nl)
Inventor
Mario Laureys
Benno Schmid
Original Assignee
Inno Mould Nv
Chemvalve Schmid Ag
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 Inno Mould Nv, Chemvalve Schmid Ag filed Critical Inno Mould Nv
Priority to BE200800216 priority Critical
Priority to BE200800216A priority patent/BE1018092A3/en
Application granted granted Critical
Publication of BE1018092A3 publication Critical patent/BE1018092A3/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222Shaping of the valve member

Abstract

This invention relates to a butterfly valve comprising a valve body (01) and a valve element (02), wherein the valve element (02) is provided to rotate within the valve body (01) and to move between a first position in which the element flows through a fluid through the the valve body blocks and a second position in which the fluid can flow through the valve body (01), the valve element (02) being designed so that it is arranged obliquely with respect to the longitudinal axis (15) of the butterfly valve.

Description

ALTERNATIVE BUTTERFLY VALVE

This invention relates to a butterfly valve comprising a valve body and a valve element, wherein the valve element is rotatably disposed within the valve body and can move between a first position in which the valve element blocks the flow of a fluid through the valve body and a second position in which the fluid through the valve body can flow.

Two types of butterfly valves are currently known, namely the centric and eccentric model.

In the centric model, the two axes, in particular the operating shaft and the bearing shaft, and the valve element are fully aligned and centered with respect to each other. To seal such a butterfly valve completely leak-free, a so-called "sleeve" must be provided. This is a large ring in rubber or teflon that sits around the valve element and is as long as the total butterfly valve, with the disadvantage that this is an expensive component of the butterfly valve.

With the eccentric model, both shafts (operating shaft and bearing shaft) and the valve element are fully aligned, but the valve element is eccentric with respect to these shafts. This model has the advantage over the centric model that a cheap sealing ring can be used. However, an additional metal ring must be provided for positioning and pressing the sealing ring when the valve element is in its closed state and must close without leakage. The metal ring provides an extra cost.

The object of this invention is to provide an alternative butterfly valve that can be sealed without leakage.

The object of the invention is achieved by providing a butterfly valve comprising a valve body and a valve element, wherein the valve element is rotatably arranged within the valve body and can move between a first position in which the valve element blocks the flow of a fluid through the valve body and a second position in which the fluid can flow through the valve body, the valve element being designed such that it is arranged obliquely with respect to the longitudinal axis of the butterfly valve. When the valve element is in its first position, the butterfly valve is in the closed position.

Due to the oblique arrangement of the valve element, a sealing ring can be mounted in the valve element itself in the butterfly valve according to the invention. Since such sealing rings are small in size and easy to produce or available as standard, a significant cost saving is achieved without loss of quality.

In a preferred embodiment of the butterfly valve according to the invention, the butterfly valve comprises an operating shaft and a bearing shaft and the valve element comprises a first and a second recess for the operating shaft and the bearing shaft, respectively. The operating shaft provides the drive that results in the rotary movement of the valve element and the operating shaft, together with the bearing shaft, will keep the valve element in a centered position in the valve body.

In a more preferred embodiment of the butterfly valve according to the invention, the valve element comprises on its outer circumference a groove for a sealing ring which is provided to retain the fluid leak-free when the valve element is in its first position.

In a most preferred embodiment of the butterfly valve according to the present invention, the valve body is provided with a ball segment in which the valve element is rotatably arranged and against which the sealing ring fully abuts when the valve element is in its first position.

To further clarify the features of this invention and to indicate additional advantages and details thereof, a more detailed description of a butterfly valve according to the invention now follows. It is to be understood that nothing in the following description can be interpreted as a limitation of the protection claimed in the claim for this invention.

In this description reference is made by reference numerals to the appended drawing, in which: figure 1 is a cross-section of a butterfly valve according to the invention.

The invention relates to a concept change with respect to a conventional butterfly valve. A valve element (02) (valve blade) with operating angle of 90 ° rotates in a one-piece housing. In the open state, the valve element (02) is in the direction of the flow direction, in the closed state, is perpendicular to the flow direction of the butterfly valve. The valve element (02) has two recesses, at the top for the control shaft with a bearing and at the bottom also for a shaft that only serves for the bearing. The valve element (02) rotates centrically around the bearing points but is arranged obliquely. This arrangement makes it possible to make a radial groove in the outer edge of the valve element which will contain the seal of the butterfly valve. The valve element (02) rotates in a ball segment mounted on the inside of the housing. In the closed position, the obliquely arranged valve element (02) with an external sealing ring will connect completely radially with the housing and thus form an optimum sealing surface.

The sealing ring is mounted in the radial groove of the valve element. This sealing ring can be made from a rubber, plastic, metal or a combination of these materials depending on the conditions in which the butterfly valve must work. The design of the sealing ring can also be optimized in function of the operating conditions.

The invention is presented in its entirety in Figure 1, in which the butterfly valve in the closed position (valve element is in its first position) is shown in section. Here, the parts discussed are presented on the basis of the reference numerals.

In the housing (1) you see the valve element (02) which is arranged obliquely with respect to the longitudinal axis (15) of the butterfly valve (device) with a radial seal (seal) (3) on the outer edge. With the butterfly valve closed, this seal fully connects to the housing (1), as it is provided with an internal ball section (4). The housing is provided with one or two recesses which open into the ball segment and in this way allow the valve element (02) to be slid into the housing and rotated in this position so that the bearing shafts can slide into the valve element (02). After mounting, the valve element (02) is arranged centrically by means of the operating shaft (5) and the lower bearing shaft (6). The control shaft has a coupling at both ends, for example a two flat sides or a square for coupling a lever or worm gearbox at the top and for connecting the valve element to the control shaft at the bottom and thus transferring the rotary movement. The control shaft is mounted in the housing by means of a bearing bush (7) and the top flange (9) also by a bearing bush (8). The control shaft is mounted from above and is secured after mounting of the top flange on the housing by means of bolts. The control shaft contains two seals, the first at the bottom (10) that prevents the fluid flowing through the butterfly valve from leaking along the control shaft and the second at the top (11) that prevents rainwater from seeping into the butterfly valve. The lower bearing shaft (6) is screwed into the housing from the bottom and holds the valve blade in the correct position with the help of the lower bearing bush (12). The bearing shaft contains a sealing ring (13) that prevents the fluid flowing through the butterfly valve from leaking. Finally, a flat seal (14) is optionally provided on both sides of the butterfly valve to allow the assembly to be installed leak-free between two flanges.

The butterfly valve differs from the existing types by the oblique arrangement of the valve element (02) with respect to the longitudinal axis of the butterfly valve with integrated seal, rotating centrally in the housing. Normally the valve element is aligned with the control shaft, either centrically with a static seal provided in the housing, or eccentric with a static seal in the housing or optionally a seal on the valve element, the seal always arranged eccentrically with respect to the control shaft is.

As a result of this concept change, certain components are built up considerably less cheaply or in fewer components than the existing butterfly valves. In this way the whole forms environmentally friendly, reliable and cheaper butterfly valve.

Claims (4)

  1. A butterfly valve comprising a valve body (01) and a valve element (02), wherein the valve element (02) is rotatably arranged within the valve body (01) and is able to move between a first position in which the valve element (02) flows through a fluid the valve body blocks and a second position in which the fluid can flow through the valve body, characterized in that the valve element (02) is designed such that it is arranged obliquely with respect to the longitudinal axis (15) of the butterfly valve.
  2. Butterfly valve according to claim 1, characterized in that the butterfly valve comprises an operating shaft (05) and a bearing shaft (06) and that the valve element (02) comprises a first and a second recess for the operating shaft and the bearing shaft respectively.
  3. Butterfly valve according to claim 1 or 2, characterized in that the valve element (02) has on its outer circumference a groove for a sealing ring (03) which is provided to ensure that when the valve element (02) is in its first position, the fluid is leakproof to stop.
  4. Butterfly valve according to claim 3, characterized in that the valve body (01) is provided with a ball segment (04) in which the valve element (02) is rotatably arranged and against which the sealing ring (03) fully abuts when the valve element (02) engages its first position.
BE200800216A 2008-04-09 2008-04-09 Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve BE1018092A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE200800216 2008-04-09
BE200800216A BE1018092A3 (en) 2008-04-09 2008-04-09 Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE200800216A BE1018092A3 (en) 2008-04-09 2008-04-09 Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve

Publications (1)

Publication Number Publication Date
BE1018092A3 true BE1018092A3 (en) 2010-05-04

Family

ID=40076601

Family Applications (1)

Application Number Title Priority Date Filing Date
BE200800216A BE1018092A3 (en) 2008-04-09 2008-04-09 Butterfly valve, has valve element rotating inside valve body and moving between two positions, and valve body including ball segment, where valve element inclines at specific angle towards longitudinal axis of valve

Country Status (1)

Country Link
BE (1) BE1018092A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016762A (en) * 2012-11-05 2013-04-03 宣达实业集团浙江耐森阀业有限公司 Bidirectional sealing butterfly valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2022571A1 (en) * 1968-11-05 1970-07-31 Vapor Corp
DE2046027A1 (en) * 1969-09-17 1971-03-25 Andrews Ind Inc
WO2004018911A1 (en) * 2002-08-14 2004-03-04 Nord-Micro Ag & Co. Ohg Butterfly valve for controlling a gas pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2022571A1 (en) * 1968-11-05 1970-07-31 Vapor Corp
DE2046027A1 (en) * 1969-09-17 1971-03-25 Andrews Ind Inc
WO2004018911A1 (en) * 2002-08-14 2004-03-04 Nord-Micro Ag & Co. Ohg Butterfly valve for controlling a gas pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103016762A (en) * 2012-11-05 2013-04-03 宣达实业集团浙江耐森阀业有限公司 Bidirectional sealing butterfly valve
CN103016762B (en) * 2012-11-05 2015-11-18 宣达实业集团浙江耐森阀业有限公司 Bidirectional sealed butterfly valve

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