EP0765448A2 - Soupape antiretour - Google Patents

Soupape antiretour

Info

Publication number
EP0765448A2
EP0765448A2 EP95936983A EP95936983A EP0765448A2 EP 0765448 A2 EP0765448 A2 EP 0765448A2 EP 95936983 A EP95936983 A EP 95936983A EP 95936983 A EP95936983 A EP 95936983A EP 0765448 A2 EP0765448 A2 EP 0765448A2
Authority
EP
European Patent Office
Prior art keywords
disc spring
check valve
closing body
valve
spring
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.)
Withdrawn
Application number
EP95936983A
Other languages
German (de)
English (en)
Inventor
Helmut Staib
Norbert Alaze
Wolfgang Schuller
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0765448A2 publication Critical patent/EP0765448A2/fr
Withdrawn legal-status Critical Current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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • 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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery

Definitions

  • the invention is based on a check valve m t. generic features of the main claim.
  • check valves are used, for example, as inlet or outlet valves in piston pumps.
  • Such a check valve is known from DE 33 29 652 AI.
  • the known check valve has a rubber-elastic, hemispherical valve closing body, which is pressed against a valve seat by a spring and closes a fluid passage bore.
  • the spring is a disc spring made of elastic material, in the middle of which the valve closing body is attached.
  • the known check valve has the disadvantage that the valve closing body and the disc spring are two parts which consist of different materials and must be connected to one another. As a result, the manufacture of the known check valve is time-consuming and costly.
  • the check valve according to the invention with the features of the main claim has the advantage that its valve closing body is integral with the disc spring and can therefore be produced quickly and inexpensively.
  • the valve closing body need not be connected to the valve spring pressing it against the valve seat.
  • the mass of the valve closing body is small, so that very short opening and closing times of the check valve according to the invention can be achieved even with low actuation forces.
  • valve spring which is designed as a disc spring, guides the valve closing body, which is integral with it, in the axial direction.
  • a radial displacement of the valve closing body in relation to the valve seat is - even when the check valve is open, i. H. if the valve closing body is lifted off the valve seat - excluded.
  • the valve closing body comes into abutment against the valve seat exactly as intended, as a result of which there is an optimal seal against backflow of fluid.
  • the disc spring also prevents
  • an etching method is suitable according to claim 3 for producing the outer contour and / or the openings of the disc spring.
  • the disc spring is preferably made of copper or a copper alloy.
  • Spiral spring bars according to claim 7 result in a long spring travel, with moderately long spring bars ensuring good guidance of the valve closing body in the axial direction.
  • the disc spring integral with the valve closing body is connected at its periphery to a valve seat body which has the valve seat in its center. This results in a compact part that is easy to handle when installed in a valve housing. Furthermore, an exact alignment of the valve closing body with respect to the valve seat is always guaranteed. Assembly errors when inserting the valve closing body into a valve housing, through which the valve closing body assumes an unintended position, are excluded.
  • the disc spring is welded or glued to the valve seat body (claim 9).
  • This has the advantage over a reshaping connection method, such as flanging, that when the disk spring is connected to the valve closing body, in particular in the radial direction, no forces act on the disk spring which deform it and thereby change its spring properties. Furthermore, such forces in the radial direction can lead to the valve closing body being mounted eccentrically with respect to the valve seat on the valve seat body.
  • FIG. 1 shows a valve closure member in one piece with a disc spring according to the invention in section
  • Figure 2 is a plan view of the valve closing body in Figure 1;
  • Figure 3 shows a valve seat body to which the valve closing body shown in Figures 1 and 2 is attached in section;
  • FIG. 4 shows an axial section through a check valve according to the invention
  • Figure 5 shows an open position of the check valve according to the invention.
  • Figure 6 shows the original size of the disc spring of the check valve according to the invention.
  • FIGs 1 and 2 show a one-piece with a disc spring 10 valve closing body 12 according to the invention.
  • the valve closing body 12 is located in the center of the circular, consisting of an elastic metal
  • Disc spring 10 it is spherical cap-shaped.
  • Two spring bars 14 extend spirally outward from it. They are slightly inclined towards the concave side of the valve closing body.
  • the spring bars 14 are arranged axially symmetrically.
  • the two spring bars 14 are delimited by two likewise spiral-shaped openings 16 in the disk spring 10.
  • a peripheral edge 18 of the disk spring 10 is formed continuously.
  • the valve closing body 12 which is integral with the disc spring 10, is produced from a circular sheet metal disc as a stamped deep-drawn part: First the circular disc spring 10 is punched out with the openings 16, then the ball-cap-shaped valve closing body 12 is formed in the middle by deep drawing, simultaneously with a middle circumferential area of the disc spring 10, in which the spring bars 14 are located, is formed into a flat cone. The reverse way of production is also possible: First, the spherical cap-shaped valve closing body 12 with the spring bars 14 integral with it can be formed by deep drawing, for example, a sheet metal strip, and then the disc spring 10 having the valve closing body 12 with the spring bars 14 can be manufactured by stamping.
  • the contour of the disc spring 10 with the openings 16 can also be produced by etching.
  • the disc spring 10 consists, for example, of copper or a copper alloy.
  • FIG. 3 shows the valve closing body 12 shown in FIGS. 1 and 2, which is integral with the disc spring 10 and is connected to a valve seat body 20.
  • the valve seat body 20 is a circular, disc-shaped, flat metal part that is much thicker than the disc spring 10 and rigid.
  • the valve seat body 20 has an axial through bore 22 as a fluid passage, which opens on one side of the disk-shaped valve seat body 20 with a conical valve seat surface 24 (FIG. 5).
  • the valve seat body 20 On its side having the valve seat 24, the valve seat body 20 continues in one piece on its circumference in a hollow cylindrical collar 26 projecting in the axial direction.
  • the disc spring 10 is welded with its peripheral edge 18 by spot welding 30 at several points on the circumference. The height of the collar 26 is selected so that the valve closing body 12 is pressed against the valve seat 24 under the bias of the disc spring 10.
  • the disc spring 10 is axially against the end face 28 of the collar 26 of the
  • valve seat body 20 pressed, the valve closing body 12 comes to rest on the valve seat 24 and together with the disc spring 10 with respect to the Valve seat 24 centered. The welding then takes place.
  • FIG. 4 shows a region of a piston pump 32 in which the check valve according to the invention is installed as an outlet valve 34, a cylinder 40 of the piston pump 32 forms a valve housing for the check valve according to the invention.
  • the piston pump 32 has a piston 36 which is guided in a cylinder bore 38 of a cylinder 40 so as to be displaceable in its longitudinal direction and can be driven to perform a stroke movement (the piston drive is not shown).
  • Washer spring 10 is connected, is inserted into a cylindrical Ar 42 at a front end 44 of the cylinder bore 38 and held there by caulking 46 of cylinder material.
  • the cylindrical countersink 42 merges into a cylindrical outlet space 50 of smaller diameter, from which a radial outlet bore 52 leads out.
  • the piston pump 32 with the check valve 34 functions in the following manner: Fluid compressed by the pump piston 36 during a working stroke acts on the valve closing body 12 through the through bore 22 and lifts it against the force of the disc spring 10 due to the pressure difference between the piston side and the outlet space side from the valve seat 24 ( Figure 5). The fluid flows around the valve closing body 12 through the passages 16 in the disc spring 10 into the outlet space 50 and leaves it through the outlet bore 52.
  • the disc spring 10 with the spring bars 14 presses the Valve closing body 12 sealing against the valve seat 24 and thereby prevents - in particular during the suction stroke of the pump piston 36 - a backflow of fluid from the outlet space 50 into the cylinder bore 38.
  • Figure 6 shows the diameter of the disc spring 10 in its original size (diameter: 4.4 mm).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

Afin de simplifier la structure d'une soupape antiretour, il est prévu un élément de fermeture (12) monobloc muni d'une rondelle élastique bombée (10). L'élément de fermeture (12) se présente sous forme de cupule au centre de la rondelle élastique bombée (10). La rondelle élastique bombée comporte des lames de ressort (14) spiroïdales.
EP95936983A 1994-12-21 1995-11-27 Soupape antiretour Withdrawn EP0765448A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4445650A DE4445650A1 (de) 1994-12-21 1994-12-21 Rückschlagventil
DE4445650 1994-12-21
PCT/DE1995/001667 WO1996019688A2 (fr) 1994-12-21 1995-11-27 Soupape antiretour

Publications (1)

Publication Number Publication Date
EP0765448A2 true EP0765448A2 (fr) 1997-04-02

Family

ID=6536495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95936983A Withdrawn EP0765448A2 (fr) 1994-12-21 1995-11-27 Soupape antiretour

Country Status (6)

Country Link
EP (1) EP0765448A2 (fr)
JP (1) JPH09509728A (fr)
KR (1) KR970701325A (fr)
DE (1) DE4445650A1 (fr)
PL (1) PL316308A1 (fr)
WO (1) WO1996019688A2 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2330645B (en) * 1997-10-22 2001-09-12 Alan William Watson Flow limiting valve
WO2001001024A1 (fr) * 1999-06-23 2001-01-04 Namiki Seimitsu Houseki Kabushiki Kaisha Structure de clapet anti-retour et micropompe utilisant ladite structure
JP3375930B2 (ja) * 2000-03-06 2003-02-10 日本ピラー工業株式会社 チェックバルブ
GB0400897D0 (en) * 2004-01-16 2004-02-18 Building Product Design Ltd Valve device
DE202004009673U1 (de) * 2004-05-05 2005-09-15 Hengst Gmbh & Co Kg Ventilanordnung in einer Kurbelgehäuseentlüftung
JP5156899B2 (ja) * 2007-08-22 2013-03-06 並木精密宝石株式会社 バルブおよびそのバルブを有する容積変動型ポンプ
FR2920854B1 (fr) * 2007-09-06 2012-09-07 Exosun Soupape a faible energie pour moteur a gaz sous pression
DE102008004591A1 (de) * 2008-01-16 2009-07-23 Schaeffler Kg Hydraulisches Steuerventil mit integriertem Rückschlagventil
JP5221993B2 (ja) * 2008-03-28 2013-06-26 公立大学法人首都大学東京 マイクロバルブ及びマイクロポンプ
JP5667628B2 (ja) * 2009-07-08 2015-02-12 エアロクライン・エイビイ チェック弁用のダイヤフラムデバイス、ダイヤフラムデバイスを備えるチェック弁およびチェック弁システム
DE102010032251A1 (de) * 2010-07-26 2012-01-26 Schaeffler Technologies Gmbh & Co. Kg Rückschlagventil sowie hydraulisches Ventil mit einem eingebauten Rückschlagventil
DE102010040617A1 (de) * 2010-09-13 2012-03-15 Robert Bosch Gmbh Ventil, insbesondere einer hydraulischen Kolbenpumpe
DE102012206941A1 (de) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Ventil, insbesondere hydraulisch gesteuertes Ventil
CN102717186A (zh) * 2012-06-17 2012-10-10 无锡市优耐特石化装备有限公司 一种自动抽风口对接装置
DE102016204117B3 (de) * 2016-03-14 2017-08-10 Robert Bosch Gmbh Druckmittelsteuerventil, insbesondere zur Steuerung der Strömungsrichtung in einer Druckmittelverbindung
CN106763940B (zh) * 2016-11-11 2019-10-11 江苏桑力太阳能产业有限公司 一种集热管断路阀

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA998248A (en) * 1972-07-28 1976-10-12 Yushi Yamamoto Secondary air supply system for an internal combustion engine
US4050859A (en) * 1976-07-01 1977-09-27 Graco Inc. Diaphragm pump having a reed valve barrier to hydraulic shock in the pressurizing fluid
CH625861A5 (fr) * 1977-12-09 1981-10-15 Wankel Felix
US4284391A (en) * 1979-10-01 1981-08-18 Acf Industries, Inc. Crashworthy fuel pump improvement
DE3212949C2 (de) * 1982-04-07 1985-02-21 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Federbelastetes Rückschlagventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9619688A2 *

Also Published As

Publication number Publication date
KR970701325A (ko) 1997-03-17
WO1996019688A2 (fr) 1996-06-27
WO1996019688A3 (fr) 1996-08-29
JPH09509728A (ja) 1997-09-30
PL316308A1 (en) 1997-01-06
DE4445650A1 (de) 1996-06-27

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