WO1985004460A1 - Shut off and regulation member for conduits and the like with a slide-like closing part - Google Patents

Shut off and regulation member for conduits and the like with a slide-like closing part Download PDF

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Publication number
WO1985004460A1
WO1985004460A1 PCT/EP1985/000118 EP8500118W WO8504460A1 WO 1985004460 A1 WO1985004460 A1 WO 1985004460A1 EP 8500118 W EP8500118 W EP 8500118W WO 8504460 A1 WO8504460 A1 WO 8504460A1
Authority
WO
WIPO (PCT)
Prior art keywords
shut
closure part
slide
ceramic
bore
Prior art date
Application number
PCT/EP1985/000118
Other languages
German (de)
French (fr)
Inventor
Franz Bittner
Kristian Rademacher-Dubbick
Wolfgang Stannek
Udo Stevens
Original Assignee
Krohne Messtechnik Gmbh & Co. Kg
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 Krohne Messtechnik Gmbh & Co. Kg filed Critical Krohne Messtechnik Gmbh & Co. Kg
Publication of WO1985004460A1 publication Critical patent/WO1985004460A1/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
    • 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
    • F16K3/0263—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 using particular material or covering 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members

Definitions

  • the invention relates to a shut-off and crizor ⁇ gan for pipes u.
  • a shut-off and crizor ⁇ gan for pipes u.
  • the closure part and the slide seat are made of a ceramic material and their sealing and sliding surfaces ground flat and are polished and lapped if necessary.
  • DE-GM 72 23 183 describes a mixer tap for water fittings, which has a disc which is fixedly arranged in a housing and has two inlet passages for the hot and cold water and one outlet passage for the mixed water, as well as one against the fixed disc
  • Flat-fitting disc which is displaceable and rotatable against it is provided with a surface channel which can be more or less overlapped with the inlet passages and the outlet passage.
  • the two disks are made of oxide ceramic and are provided with a face grinding on their mutually opposing sealing or sliding surfaces and are polished / lapped so that they pass through Seal adhesion.
  • the two ceramic disks provide a good seal in relation to one another, they have the disadvantage that they have to be fastened in the housing or on the rotating part with sealing rings, sealing molded parts made of plastic or the like, which are exposed to the flowing medium.
  • Shut-off and control devices of this type are therefore not suitable for aggressive and hot liquids and gases.
  • This also applies to ball shut-off valves in which the spherical valve plug and the multi-part plug bearing are made of ceramic, or for a slide valve that can be finely adjusted according to specified characteristics and has a shell-shaped slide element that is arranged in a bushing transverse to the direction of flow. is slidable.
  • the object of the invention is to design a shut-off and control element of the generic type in such a way that it is also suitable for aggressive and hot media and has a simple structure.
  • a cylindrical ceramic body which is arranged in a tubular housing which has a lateral cutout for the closure part, is provided with a through-bore and with the sliding surface which forms the slide seat.
  • This training essentially has the advantage that the medium flowing through only comes into contact with corrosion-resistant ceramic components.
  • the shut-off and regulating element is therefore also resistant to aggressive and / or hot liquids or gases, and also to abrasive media and is particularly suitable for use in the chemical industry or the like.
  • shut-off and regulating member can also be connected in a simple manner — either with the end faces of the cylindrical ceramic body or with the tubular housing, which can also be equipped with flanges, to a pipeline, a measuring device or the like .
  • the actuating forces for the closure part run perpendicular to the compressive force of the flowing medium, so that the force required for the actuating force is considerably less than in the known designs. Also advantageous is the insensitivity of the shut-off and control element equipped with the ceramic components to tensile, pressure and bending stresses in the installed state, since the functional surfaces lie outside the force flow zones of the assembly forces. The high hardness of the ceramic material used also allows it to be used for very dirty and abrasive media.
  • the shut-off and control element can be equipped with a flat slide valve as well as with a rotary slide valve.
  • a flat slide valve the cylindrical ceramic body with a continuous axial flow bore and a perpendicular to this slot provided and the ceramic closure part formed as a flat slide.
  • the guide surfaces of both ceramic components form the sealing and sliding surfaces, which are ground, polished and, if necessary, lapped.
  • the flat ceramic valve body can consist of three sections, the end sections of which are attached to the housing, the flat slide valve a compression spring may be provided between the middle section and one end section and in an intermediate space between the middle section and the other end section.
  • the compression spring presses the middle section in the direction of the slide slot, while the two end sections are firmly connected to the housing and form abutments.
  • the flat slide can be provided with differently designed flow openings, for example with a hole corresponding to the flow hole of the cylindrical ceramic body, which in the open position is aligned with the flow opening.
  • the cylindrical ceramic body has an intermediate wall in its passage. flow bore and on its cylinder jacket a sliding surface forming the sliding surface, from each of which a transverse bore leads to the inner ends of the divided flow bore, while the ceramic closure part is designed as a rotary slide valve, the end face of which has a connecting channel for the transverse bores.
  • the one transverse bore is expediently located in the axis of rotation of the rotary slide valve, and the connecting channel from the axis of rotation leads radially outward to the other transverse bore and from there continues in a crescent shape.
  • the rotary slide valve is expediently pressed with its end face against the sliding surface of the tubular ceramic body by a compression spring mounted on the tubular housing.
  • shut-off and control element designed as a flat slide valve in a longitudinal section
  • FIG. 2 shows a part of the object of FIG. 1 in a cross section
  • FIG. 3 shows a detail of FIG. 1 in the closed position
  • Fig. 4 shows a second embodiment of a
  • shut-off and control element designed as a rotary slide valve in a longitudinal section
  • closure part effective as a rotary slide valve in a view from the channel side, the contact surface and the side and
  • FIG. 9 shows the subject of FIG. 6 in a different rotational position.
  • FIGS. 1 to 3 essentially consists of a cylindrical ceramic body 1, a tubular housing 2 and a closure part 5 designed as a flat slide.
  • the tubular housing 2 is made of metallic material or plastic and has a lateral cutout 3 through which the closure part 5 is guided.
  • the closure part 5, like the cylindrical ceramic body 1, consists of a high-strength, tightly fired ceramic material, for example oxide ceramic, which is resistant to aggressive media such as acids, alkalis or the like.
  • the cylindrical ceramic body 1 is provided with an axial flow bore 4 for the medium and has a slot 31 arranged perpendicular to the flow direction, the sliding surfaces 8 of which are ground and polished, possibly also are lapped.
  • the closure part 5 which is designed as a flat slide, is also face-ground and polished on its sealing surfaces 7 and is provided with a bore 6 corresponding to the through-bore 4, which in the open position lies flush with the through-bore 4.
  • the width of the slot 31 and the closure part 5 is so dimensioned that the adhesive forces which take effect between the sealing surfaces 7 and sliding surfaces 8 take care of the sealing.
  • the thickness of the flat slide depends on the strength properties of the ceramic material.
  • the actuator 9 of the closure part 5 is only hinted at.
  • the cylindrical ceramic body 1 can be fastened, for example, by shrinking in the tubular housing 2.
  • Other types of fastening e.g. Gluing or the like, suitable.
  • the flow rate can be finely adjusted in accordance with the characteristic of the bore 6, which can also be designed as an angular or curved cutout, by radial displacement of the closure part 5. 3 the closed position is shown.
  • FIG. 4 essentially corresponds to the embodiment according to FIGS. 1 to 3 with the modification that, in order to achieve a greater contact force, the cylindrical ceramic body 1 is divided into three sections, which are end sections 10, 12 and middle section be designated. While the end sections 10, 12 are fixed to the housing 2 by shrinking, gluing or the like, the middle section is axially displaceable in the housing 2.
  • the slot 31 is located between the 5th middle section 11 and the right end section 10, and between the middle section 11 and the left end section 12 there is an annular intermediate space 13 for receiving a compression spring 14 which holds the middle section pushes towards slot 31.
  • the compression spring 14 is guided by an axial pin 15 molded onto the end section 12, which projects into a corresponding bore in the central section.
  • FIGS. 5 to 8 also has a cylindrical ceramic body 1 fastened in a tubular housing 2, but is equipped with a closure part 20 designed as a rotary slide.
  • a closure part 20 designed as a rotary slide.
  • an intermediate wall 16 is initially left in the central region of the through-bore 4 by incorporating two blind bores.
  • the ceramic body 1 is provided on its cylinder jacket with a grinding surface which forms the sliding surface 19 for the closure part 20.
  • two transverse bores 17, 18 lead radially outward to the sliding surface 19.
  • One transverse bore 18 lies in the axis of rotation of the closure part 20.
  • the ceramic closure part 20 is designed as a rotary slide valve, the in 5, the face 21 lying downward is provided with a connecting channel 22 which, depending on the rotational position, can be more or less overlapped with the transverse bores 17, 18.
  • the connecting channel 22 initially leads radially outward from the axis of rotation to the other bore 17.
  • the shut-off and regulating member is completely open.
  • the connecting channel 22 continues from the outer end of the radial section 23 in a crescent shape, namely by approximately three quarters of the circumference.
  • the channel section gradually decreases, so that an infinitely variable and finely adjustable amount setting with any flow rate curve is possible.
  • the seal is achieved by surface grinding and polishing and, if necessary, lapping of the sliding surface 19 and end surface 21.
  • the closure part 20 For rotation, there are depressions 25 on the upper edge of the closure part 20, into which the pins of a driver plate 26, which is assigned to the adjusting shaft 27, engage.
  • the actuating shaft 27 is guided by a support disk 29 which is screwed into a collar 28 of the housing 2.
  • This support disk 29 is also an abutment for a compression spring 30, which presses the closure part 20 against the sliding surface 19 of the cylindrical ceramic body 1 to increase the contact force.
  • the closure part 20 can be designed as a cylindrical body, in whose upper end the adjusting shaft is inserted or screwed in, the upper end likewise forming the stop for the helical compression spring.
  • shut-off devices designed according to the invention can be used, for example, in connection with flow rate measuring devices, e.g. magnetic-inductive flowmeters or variable area flowmeters can be used for the exact metering of liquids or gases.
  • flow rate measuring devices e.g. magnetic-inductive flowmeters or variable area flowmeters
  • Conventional adjusting elements can be used for the slide-like closure parts, namely by hand or by motor.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

A shut off and regulation member for conduits and the like is provided with a slide-like closure part (5) which, during the opening and the closing, slides with at least one plane sealing surface (7) along a corresponding sliding surface (8) of a slide seat, the closure part (8) and the slide seat being made with a ceramic material and their sealing and sliding surfaces (7, 8) being planar and polished, and if necessary lapped. In order to make the shut off and regulation member appropriate also to aggressive and hot media and to simplify its construction, there is provided a ceramic cylindrical body (1) which is arranged inside a tubular casing (2) comprising a side cutting for the closure part (5) and which is provided with a flow hole (4) and with a sliding surface (8) forming the slide seat. In one embodiment using a flat slide, the ceramic cylindrical body (1) is provided with an axial traversing flow hole (4) and with a slot (8) perpendicular thereto, whereas the ceramic closure part (5) is configured as a flat slide. An embodiment using a rotary slide provides that the ceramic cylindrical body has an intermediary wall in its flow hole and, against the cylindrical mantle, a polished surface forming a sliding surface, from which a transversal hole leads to the inner ends of the separate flow hole; it also provides that the ceramic closure part is configured as a rotary slide of which the front surface has a connection channel for the transversal holes.

Description

Absperr- und Regelorgaή für Rohrleitungen u. dgl mit einem schieberartigen VerschlußteilShut-off and Regelorgaή for pipes and. Like with a slide-like closure part
Die Erfindung betrifft ein Absperr- und Regelor¬ gan für Rohrleitungen u. dgl. mit einem schieber¬ artigen Verschlußteil, das beim Öffnen und Schließen mit wenigstens einer planebenen Dich- tungsfläche an einer entsprechenden Gleitfläche eines Schiebersitzes entlanggleitet, wobei das Verschlußteil und der Schiebersitz aus einem keramischen Werkstoff bestehen und deren Dich¬ tungs- und Gleitflächen plangeschliffen und po- liert und bedarfsweise geläppt sind. In dem DE-GM 72 23 183 ist eine Mischbatterie für Wasserarmaturen beschrieben, die mit einer in einem Gehäuse fest angeordneten Scheibe mit zwei Einlaßdurchgängen für das Heiß- und Kalt- wasser und einem Auslaßdurchgang für das Misch¬ wasser sowie mit einer gegen die feste Scheibe flach anliegenden und gegen diese verschieb- und drehbaren Scheibe mit einem Oberflächenka¬ nal versehen ist, der mit den Einlaßdurchgän- gen und dem Auslaßdurchgang mehr oder weniger in Überdeckung gebracht werden kann. Bei auf dem Markt bekanntgewordenen Ausführungen die¬ ser Art bestehen die beiden Scheiben aus Oxid¬ keramik und sind an ihren gegeneinanderliegen- den Dichtungs- bzw. Gleitflächen so genau mit einem Planschliff .versehen und poliert/ be¬ darfsweise auch geläppt, so daß sie durch Ad¬ häsion abdichten. Die beiden keramischen Schei¬ ben geben zwar im Verhältnis zueinander eine gu- te Abdichtung, haben jedoch den Nachteil, daß sie im Gehäuse bzw. am Drehteil mit Dichtungs¬ ringen, abdichtenden Formteilen aus Kunst¬ stoff o. dgl. befestigt werden müssen, welche dem strömenden Medium ausgesetzt sind. Daher sind Absperr- und Regelorgane dieser Art für aggressive und heiße Flüssigkeiten und Gase nicht geeignet. Das gilt auch für Kugelabsperr¬ hähne, bei denen das kugelförmige Hahnküken und das mehrteilige Kükenlager aus Keramik be- steht oder für einen nach vorgegebenen Charak¬ teristiken fein einstellbaren Schieber mit ei¬ nem schalenförmigen Schieberelement, das in einer Buchse quer zur Strömungsrichtung ver- schiebbar ist .The invention relates to a shut-off and Regelor¬ gan for pipes u. Like. With a slide-like closure part that slides along opening and closing with at least one plane sealing surface on a corresponding sliding surface of a slide seat, the closure part and the slide seat are made of a ceramic material and their sealing and sliding surfaces ground flat and are polished and lapped if necessary. DE-GM 72 23 183 describes a mixer tap for water fittings, which has a disc which is fixedly arranged in a housing and has two inlet passages for the hot and cold water and one outlet passage for the mixed water, as well as one against the fixed disc Flat-fitting disc which is displaceable and rotatable against it is provided with a surface channel which can be more or less overlapped with the inlet passages and the outlet passage. In versions of this type which have become known on the market, the two disks are made of oxide ceramic and are provided with a face grinding on their mutually opposing sealing or sliding surfaces and are polished / lapped so that they pass through Seal adhesion. Although the two ceramic disks provide a good seal in relation to one another, they have the disadvantage that they have to be fastened in the housing or on the rotating part with sealing rings, sealing molded parts made of plastic or the like, which are exposed to the flowing medium. Shut-off and control devices of this type are therefore not suitable for aggressive and hot liquids and gases. This also applies to ball shut-off valves in which the spherical valve plug and the multi-part plug bearing are made of ceramic, or for a slide valve that can be finely adjusted according to specified characteristics and has a shell-shaped slide element that is arranged in a bushing transverse to the direction of flow. is slidable.
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein Absperr- und Regelorgan der gat- tungsgemäßen Art derart auszubilden, daß es auch für aggressive und heiße Medien geeignet ist und einen einfachen Aufbau hat.In contrast, the object of the invention is to design a shut-off and control element of the generic type in such a way that it is also suitable for aggressive and hot media and has a simple structure.
Diese Aufgabe wird erfindungsgemäß gelöst durch einen zylinderförmigen Keramikkörper, der in ei¬ nem rohrförmigen Gehäuse, das einen seitlichen Ausschnitt für das Verschlußteil aufweist, an¬ geordnet, mit einer Durchflußbohrung und mit der den Schiebersitz bildenden Gleitfläche versehen ist.This object is achieved according to the invention by a cylindrical ceramic body which is arranged in a tubular housing which has a lateral cutout for the closure part, is provided with a through-bore and with the sliding surface which forms the slide seat.
Diese Ausbildung hat im wesentlichen den Vorteil, daß das durchströmende Medium ausschließlich mit korrosionsbeständigen keramischen Bauteilen in Berührung kommt. Das Absperr- und Regelorgan ist daher auch gegenüber aggressiven und/oder heißen Flüssigkeiten oder Gasen, ebenso auch gegenüber abrasiv wirkenden Medien beständig und für den Einsatz in der chemischen Industrie o. dgl. besonders geeignet.This training essentially has the advantage that the medium flowing through only comes into contact with corrosion-resistant ceramic components. The shut-off and regulating element is therefore also resistant to aggressive and / or hot liquids or gases, and also to abrasive media and is particularly suitable for use in the chemical industry or the like.
Ein weiterer Vorteil besteht in einem sehr ver¬ einfachten Aufbau; während bei den vorbekannten Ausführungen eine Vielzahl von Bauteilen erfor- erlich war, sind dem Gehäuse in der Grundaus¬ führung nur zwei keramische Bauteile zugeordnet. Die Beschränkung auf diese zwei Einbauteile hat den Vorteil, daß nur eine abzudichtende Flächen¬ zone vorhanden ist und durch Planschleifen und Polieren, gegebenenfalls auch Läppen, eine ein- fache und durch Adhäsion wirksame Abdichtung erzielt wird. Das Absperr- und Regelorgan läßt sich auch auf einfache Art und Weise-entweder mit den Stirnflächen des zylinderförmigen Kera¬ mikkörpers oder mit dem rohrförmigen Gehäuse, das auch mit Flanschen ausgestattet sein kann, n eine Rohrleitung, ein Meßgerät o. dgl. an¬ schließen. In vorteilhafter Weise verlaufen die Stellkräfte für das Verschlußteil senkrecht zur Druckkraft des strömenden Mediums, so daß der Kraftaufwand für die Stellkraft wesentlich ge¬ ringer als bei den*bekannten Ausführungen ist. Vorteilhaft ist auch die ünempfindlichkeit des' mit den keramischen Bauteilen ausgestatteten Absperr- und Regelorgans gegen Zug-, Druck- und Biegebeanspruchungen im Einbauzustand, da die Funktionsflächen außerhalb der Kraftflußzonen der Montagekräf e liegen. Die hohe Härte des verwendeten keramischen Werkstoffes erlaubt auch einen Einsatz für stark verschmutzte und abrasiv wirkende Medien.Another advantage is a very simple structure; While a large number of components was required in the previously known designs, only two ceramic components are assigned to the housing in the basic design. The restriction to these two built-in parts has the advantage that there is only one surface zone to be sealed and that a simple seal which is effective by adhesion is achieved by surface grinding and polishing, possibly also lapping. The shut-off and regulating member can also be connected in a simple manner — either with the end faces of the cylindrical ceramic body or with the tubular housing, which can also be equipped with flanges, to a pipeline, a measuring device or the like . In an advantageous manner, the actuating forces for the closure part run perpendicular to the compressive force of the flowing medium, so that the force required for the actuating force is considerably less than in the known designs. Also advantageous is the insensitivity of the shut-off and control element equipped with the ceramic components to tensile, pressure and bending stresses in the installed state, since the functional surfaces lie outside the force flow zones of the assembly forces. The high hardness of the ceramic material used also allows it to be used for very dirty and abrasive media.
Das Absperr- und Regelorgan kann sowohl mit ei¬ nem Flachschieber als auch mit einem Drehschie¬ ber ausgerüstet werden. Für eine Ausbildung als Flachschieber ist der zylinderförmige Keramik¬ körper mit einer durchgehenden axialen Durch- flußbohrung und einem hierzu senkrecht verlau¬ fenden Schlitz versehen und das keramische Ver¬ schlußteil als Flachschieber ausgebildet. Bei dieser Ausführung bilden die Führungsflächen beider keramischer Bauteile die Dichtungs- und Gleitflächen, welche plangeschliffen, poliert und gegebenenfalls geläppt sind. Soll in be¬ sonders gelagerten Fällen, z.B. hohe Drücke, eine erhöhte Abdichtung durch zusätzliche An- stellkräfte notwendig sein, kann bei der Flach¬ schieberausführung der zylinderförmige Keramik¬ körper aus drei Abschnitten bestehen, von denen die Endabschnitte am Gehäuse befestigt sind, der Flachschieber zwischen dem mittleren Ab- schnitt und einem Endabschnitt sowie in einem Zwischenraum zwischen dem mittleren Abschnitt •und dem anderen Endabschnitt eine Druckfeder vorgesehen sein. Die Druckfeder drückt den mitt¬ leren Abschnitt in Richtung zum Schieberschlitz, während die beiden Endabschnitte mit dem Gehäu¬ se fest verbunden sind und Widerlager bilden. Be¬ darfsweise kann der Flachschieber zur Erzielung bestimmter Durchflußcharakteristiken mit ver¬ schieden ausgebildeten Durchflußöffnungen, bei- spielsweise mit einer der Durchflußbohrung des zylinderförmigen Keramikkörpers entsprechenden Bohrung versehen sein, die in der Offenstellung fluchtend zur Durchflußöffnung liegt.The shut-off and control element can be equipped with a flat slide valve as well as with a rotary slide valve. For an embodiment as a flat slide valve, the cylindrical ceramic body with a continuous axial flow bore and a perpendicular to this slot provided and the ceramic closure part formed as a flat slide. In this version, the guide surfaces of both ceramic components form the sealing and sliding surfaces, which are ground, polished and, if necessary, lapped. If, in particularly stored cases, for example high pressures, an increased seal is required due to additional contact forces, the flat ceramic valve body can consist of three sections, the end sections of which are attached to the housing, the flat slide valve a compression spring may be provided between the middle section and one end section and in an intermediate space between the middle section and the other end section. The compression spring presses the middle section in the direction of the slide slot, while the two end sections are firmly connected to the housing and form abutments. If necessary, to achieve certain flow characteristics, the flat slide can be provided with differently designed flow openings, for example with a hole corresponding to the flow hole of the cylindrical ceramic body, which in the open position is aligned with the flow opening.
Soll das Absperr- und Regelorgan als Drehschieber ausgebildet sein, weist der zylinderförmige Kera¬ mikkörper eine Zwischenwand in seiner Durch- flußbohrung und an seinem Zylindermantel eine die Gleitfläche bildende Anschlifffläche auf, von der je eine Querbohrung zu den inneren En¬ den der geteilten Durchflußbohrung führt, wäh- rend das keramische Verschlußteil als Drehschie¬ ber ausgebildet ist, dessen Stirnfläche einen Verbindungskanal für die Querbohrungen aufweist. Zweckmäßig liegt die eine Querbohrung in der Drehachse des Drehschiebers, und der Verbindungs- kanal von der Drehachse führt radial nach außen bis über die andere Querbohrung und von dort aus sichelförmig weiter. Zur Erhöhung der Anstell¬ kraft wird der Drehschieber zweckmäßig von einer am rohrförmigen Gehäuse gelagerten Druckfeder mit seiner Stirnfläche gegen die Gleitfläche des rohrförmigen Keramikkörpers gedrückt.If the shut-off and control element is to be designed as a rotary slide valve, the cylindrical ceramic body has an intermediate wall in its passage. flow bore and on its cylinder jacket a sliding surface forming the sliding surface, from each of which a transverse bore leads to the inner ends of the divided flow bore, while the ceramic closure part is designed as a rotary slide valve, the end face of which has a connecting channel for the transverse bores. The one transverse bore is expediently located in the axis of rotation of the rotary slide valve, and the connecting channel from the axis of rotation leads radially outward to the other transverse bore and from there continues in a crescent shape. To increase the setting force, the rotary slide valve is expediently pressed with its end face against the sliding surface of the tubular ceramic body by a compression spring mounted on the tubular housing.
Der Gegenstand der Erfindung ist in der Zeichnung anhand von drei Ausführungsbeispielen dargestellt. Es zeigt:The object of the invention is illustrated in the drawing using three exemplary embodiments. It shows:
Fig. 1 ein als Flachschieber ausgebildetes Ab¬ sperr- und Regelorgan in einem Längs¬ schnitt,1 shows a shut-off and control element designed as a flat slide valve in a longitudinal section,
Fig. 2 einen Teil des Gegenstandes der Fig. 1 in einem Querschnitt,2 shows a part of the object of FIG. 1 in a cross section,
Fig. 3 einen Ausschnitt der Fig. 1 in der Schließ- Stellung,3 shows a detail of FIG. 1 in the closed position,
Fig. 4 ein zweites Ausführungsbeispiel einesFig. 4 shows a second embodiment of a
Flachschiebers mit einer Druckfeder zur Erhöhung der Dichtigkeit,Flat slide valve with a compression spring Increase in tightness,
Fig. -5 ein als Drehschieber ausgebildetes Ab¬ sperr- und Regelorgan in einem Längs- schnitt,5 shows a shut-off and control element designed as a rotary slide valve in a longitudinal section,
Fig. 6 bis 8 das als Drehschieber wirksame Ver¬ schlußteil in einer Ansicht von der Ka¬ nalseite, der Anstellflache und der Sei- te und6 to 8 the closure part effective as a rotary slide valve in a view from the channel side, the contact surface and the side and
Fig. 9 den Gegenstand der Fig. 6 in einer ande¬ ren Drehlage.FIG. 9 shows the subject of FIG. 6 in a different rotational position.
Das in den Fig. 1 bis 3 dargestellte Ausführungs¬ beispiel besteht im wesentlichen aus einem zylin- derförmigen Keramikkörper 1, einem rohrförmigen Gehäuse 2 und einem als Flachschieber ausgebilde¬ ten Verschlußteil 5. Das rohrförmige Gehäuse 2 ist aus metallischem Werkstoff oder Kunststoff gefertigt und hat einen seitlichen Ausschnitt 3, durch den das Verschlußteil 5 geführt wird. Das Verschlußteil 5 besteht ebenso wie der zylinder¬ förmige Keramikkörper 1 aus einem hochfesten, dicht gebrannten keramischen Werkstoff, beispiels¬ weise Oxidkeramik, der gegen aggressive Medien, wie Säuren, Laugen ö. dgl., widerstandsfähig ist. Der zylinderförmige Keramikkörper 1 ist mit einer axialen Durchflußbohrung 4 für das Medium versehen und besitzt einen senkrecht zur Durchflußrichtung angeordneten Schlitz 31, dessen Gleitflächen 8 plangeschliffen und poliert, gegebenenfalls auch geläppt sind. Das als Flachschieber ausgebilde¬ te Verschlußteil 5 ist an seinen Dichtungsflä¬ chen 7 ebenfalls plangeschliffen und poliert und mit einer der Durchflußbohrung 4 entsprechenden Bohrung 6 versehen, die in der Offenstellung fluch¬ tend zur Durchflußbohrung 4 liegt. Die Breite des Schlitzes 31 und des Verschlußteils 5 ist so be¬ messen, daß die zwischen den Dichtungsflächen 7 und Gleitflächen 8 wirksam werdenden Adhäsivkräf- te für die Abdichtung Sorge tragen. Die Dicke des Flachschiebers hängt von den Festigkeitseigen¬ schaften des keramischen Werkstoffs ab. Der Stell¬ antrieb 9 des Verschlußteils 5 ist nur angedeutet.The embodiment shown in FIGS. 1 to 3 essentially consists of a cylindrical ceramic body 1, a tubular housing 2 and a closure part 5 designed as a flat slide. The tubular housing 2 is made of metallic material or plastic and has a lateral cutout 3 through which the closure part 5 is guided. The closure part 5, like the cylindrical ceramic body 1, consists of a high-strength, tightly fired ceramic material, for example oxide ceramic, which is resistant to aggressive media such as acids, alkalis or the like. The cylindrical ceramic body 1 is provided with an axial flow bore 4 for the medium and has a slot 31 arranged perpendicular to the flow direction, the sliding surfaces 8 of which are ground and polished, possibly also are lapped. The closure part 5, which is designed as a flat slide, is also face-ground and polished on its sealing surfaces 7 and is provided with a bore 6 corresponding to the through-bore 4, which in the open position lies flush with the through-bore 4. The width of the slot 31 and the closure part 5 is so dimensioned that the adhesive forces which take effect between the sealing surfaces 7 and sliding surfaces 8 take care of the sealing. The thickness of the flat slide depends on the strength properties of the ceramic material. The actuator 9 of the closure part 5 is only hinted at.
Der zylinderförmige Keramikkörper 1 kann beispiels¬ weise durch Einschrumpfen im rohrförmigen Gehäuse 2 befestigt sein. Doch sind auch andere Befesti¬ gungsarten, z.B. Verkleben o. dgl., geeignet. Nach dem Anschluß an eine Rohrleitung (nicht dar- gestellt) kann die Durchflußmenge entsprechend dem Charakteristikum der Bohrung 6, die auch als eckiger oder kurviger Ausschnitt ausgebildet sein kann, durch radiale Verschiebung des Verschlu߬ teils 5 fein eingestellt werden. In Fig. 3 ist die Schließstellung gezeigt.The cylindrical ceramic body 1 can be fastened, for example, by shrinking in the tubular housing 2. However, other types of fastening, e.g. Gluing or the like, suitable. After connection to a pipeline (not shown), the flow rate can be finely adjusted in accordance with the characteristic of the bore 6, which can also be designed as an angular or curved cutout, by radial displacement of the closure part 5. 3 the closed position is shown.
Die in Fig. 4 gezeigte Ausführung entspricht im wesentlichen der Ausführung nach den Fig. 1 bis 3 mit der Abwandlung, daß zur Erzielung einer stär- keren Anstellkraft der zylinderförmige Keramik- körper 1 in drei Abschnitte unterteilt ist, die als Endabschnitte 10, 12 und mittlerer Abschnitt bezeichnet werden. Während die Endabschnitte 10, 12 am Gehäuse 2 durch Einschrumpfen, Verkleben o. dgl. fixiert sind, ist der mittlere Abschnitt axial im Gehäuse 2 verschiebbar. Zwischen dem 5. mittleren Abschnitt 11 und dem rechten Endab¬ schnitt 10 liegt der Schlitz 31, und zwischen dem mittleren Abschnitt 11 und dem linken Endab¬ schnitt 12 befindet sich ein ringförmiger Zwi¬ schenraum 13 zur Aufnahme einer Druckfeder 14, welche den mittleren Abschnitt zum Schlitz 31 hin drückt. Der Führung der Druckfeder 14 dient ein an den Endabschnitt 12 angeformter axialer Zapfen 15, der in eine entsprechende Bohrung des mittleren Abschnitts ragt.The embodiment shown in FIG. 4 essentially corresponds to the embodiment according to FIGS. 1 to 3 with the modification that, in order to achieve a greater contact force, the cylindrical ceramic body 1 is divided into three sections, which are end sections 10, 12 and middle section be designated. While the end sections 10, 12 are fixed to the housing 2 by shrinking, gluing or the like, the middle section is axially displaceable in the housing 2. The slot 31 is located between the 5th middle section 11 and the right end section 10, and between the middle section 11 and the left end section 12 there is an annular intermediate space 13 for receiving a compression spring 14 which holds the middle section pushes towards slot 31. The compression spring 14 is guided by an axial pin 15 molded onto the end section 12, which projects into a corresponding bore in the central section.
Das in den Fig. 5 bis 8 dargestellte Ausführungs¬ beispiel besitzt ebenfalls einen in einem rohr¬ förmigen Gehäuse 2 befestigten zylinderförmigen Keramikkörper 1, ist jedoch mit einem als Dreh- Schieber ausgebildeten Verschlußteil 20 ausge¬ rüstet. Hierfür ist zunächst im mittleren Bereich der Durchflußbohrung 4 eine Zwischenwand 16 be¬ lassen, indem zwei Sackbohrungen eingearbeitet sind. Weiterhin ist der Keramikkörper 1 an sei- nem Zylindermantel mit einer Anschlifffläche ver¬ sehen, welche die Gleitfläche 19 für das Ver¬ schlußteil 20 bildet. Von den inneren Enden der beiden Sackbohrungen führen zwei Querbohrungen 17, 18 radial nach außen zur Gleitfläche 19. Die eine Querbohrung 18 liegt in der Drehachse des Verschlußteils 20. Das keramische Verschlußteil 20 ist als Drehschieber ausgebildet, dessen in Fig. 5 nach unten liegende Stirnfläche 21 mit einem Verbindungskanal 22 versehen ist, die je nach der Drehlage mehr oder weniger mit den Querbohrungen 17, 18 in Überdeckung gebracht wer- den kann. Für diesen Zweck führt der Verbindungs¬ kanal 22 zunächst von der Drehachse radial nach außen bis über die andere Bohrung 17. In der Drehlage, in der die Querbohrungen durch diesen radialen Abschnitt 23 verbunden sind, ist das Ab- sperr- und Regelorgan ganz geöffnet. Doch führt der Verbindungskanal 22 von dem Außenende des radialen Abschnitts 23 sichelförmig weiter, und zwar um etwa drei Viertel des Umfangs. In dem si¬ chelförmigen Abschnitt 24 verringert sich der Ka- nalabschnitt allmählich, so daß eine stufenlose und fein dosierbare Mengeneinstellung mit belie¬ biger Durchflußkannlinie möglich ist. Die Abdich¬ tung wird durch Planschliff und Polieren und be¬ darfsweise Läppen der Gleitfläche 19 und Stirn- fläche 21 erzielt.The embodiment shown in FIGS. 5 to 8 also has a cylindrical ceramic body 1 fastened in a tubular housing 2, but is equipped with a closure part 20 designed as a rotary slide. For this purpose, an intermediate wall 16 is initially left in the central region of the through-bore 4 by incorporating two blind bores. Furthermore, the ceramic body 1 is provided on its cylinder jacket with a grinding surface which forms the sliding surface 19 for the closure part 20. From the inner ends of the two blind bores, two transverse bores 17, 18 lead radially outward to the sliding surface 19. One transverse bore 18 lies in the axis of rotation of the closure part 20. The ceramic closure part 20 is designed as a rotary slide valve, the in 5, the face 21 lying downward is provided with a connecting channel 22 which, depending on the rotational position, can be more or less overlapped with the transverse bores 17, 18. For this purpose, the connecting channel 22 initially leads radially outward from the axis of rotation to the other bore 17. In the rotational position in which the transverse bores are connected by this radial section 23, the shut-off and regulating member is completely open. However, the connecting channel 22 continues from the outer end of the radial section 23 in a crescent shape, namely by approximately three quarters of the circumference. In the sickle-shaped section 24, the channel section gradually decreases, so that an infinitely variable and finely adjustable amount setting with any flow rate curve is possible. The seal is achieved by surface grinding and polishing and, if necessary, lapping of the sliding surface 19 and end surface 21.
Zur Drehung sind am oberen Rand des Verschlußteils 20 Vertiefungen 25 vorhanden, in welche die Stifte einer Mitnehmerplatte 26 angreifen, die der Stell- welle 27 zugeordnet ist. Die Führung der Stellwelle 27 geschieht durch eine Stützscheibe 29, die in ei¬ nen Kragen 28 des Gehäuses 2 eingeschraubt ist. Diese Stützscheibe 29 ist außerdem ein Widerlager für eine Druckfeder 30, welche zur Vergrößerung der Anstellkraft das Verschlußteil 20 gegen die Gleitfläche 19 des zylinderför igen Keramikkör¬ pers 1 drückt. Mittels der Einschraubtiefe der Stützscheibe 29 läßt sich die Anstellkraft vari¬ ieren. Alternativ kann das Verschlußteil 20 als zylinderförmiger Körper ausgebildet sein, in des¬ sen oberes Ende die Stellwelle eingesteckt oder eingeschraube ist, wobei das obere Ende gleich¬ falls den Anschlag für die spiralförmig ausge¬ bildete Druckfeder bildet.For rotation, there are depressions 25 on the upper edge of the closure part 20, into which the pins of a driver plate 26, which is assigned to the adjusting shaft 27, engage. The actuating shaft 27 is guided by a support disk 29 which is screwed into a collar 28 of the housing 2. This support disk 29 is also an abutment for a compression spring 30, which presses the closure part 20 against the sliding surface 19 of the cylindrical ceramic body 1 to increase the contact force. By means of the screwing depth of the Support disc 29, the contact force can be varied. Alternatively, the closure part 20 can be designed as a cylindrical body, in whose upper end the adjusting shaft is inserted or screwed in, the upper end likewise forming the stop for the helical compression spring.
Die erfindungsgemäß ausgebildeten Absperrorgane können beispielsweise in Verbindung mit Durch¬ flußmengenmeßgeräten, z.B. magnetisch-induktiven Durchflußmeßgeräten oder Schwebekörper-Durch¬ flußmeßgeräten zur genauen Mengendosierung von Flüssigkeiten oder Gasen verwendet werden. Für die schieberartigen Verschlußteile können übliche Anstellorgane Verwendung finden, und zwar von Hand oder motorisch zu betätigende. The shut-off devices designed according to the invention can be used, for example, in connection with flow rate measuring devices, e.g. magnetic-inductive flowmeters or variable area flowmeters can be used for the exact metering of liquids or gases. Conventional adjusting elements can be used for the slide-like closure parts, namely by hand or by motor.

Claims

Patentansprüche: Claims:
1. Absperr- und Regelorgan für Rohrleitungen u. dgl. mit einem schieberartigen Verschlu߬ teil, das beim Öffnen und Schließen mit we¬ nigstens einer planebenen Dichtungsf äche an einer entsprechenden Gleitfläche eines1. Shut-off and control element for pipes and. Like. With a slide-like closure part, which when opening and closing with at least one plane sealing surface on a corresponding sliding surface of a
Schiebersitzes entlanggleitet, wobei das Verschlußteil und der Schiebersitz aus ei¬ nem keramischen Werkstoff bestehen und de¬ ren Dichtungs- und Gleitflächen plange- schliffen und poliert sind, gekennzeichnet durch einen zy inderförmigen Keramikkörper (1), der in einem rohrförmigen Gehäuse (2), das einen seitlichen Ausschnitt für das Ver- schlußteil (5 bzw. 21) aufweist, angeordnet, mit einer Durchflußbohrung (4) und mit der den Schiebersitz bildenden Gleitfläche (8 bzw. 20) versehen ist.Slides along the slide seat, the closure part and the slide seat being made of a ceramic material and their sealing and sliding surfaces being ground and polished, characterized by a cylindrical ceramic body (1), which is in a tubular housing (2), which has a lateral cutout for the closure part (5 or 21), is arranged, is provided with a through-bore (4) and is provided with the sliding surface (8 or 20) forming the slide seat.
2. Absperr- und Regelorgan nach Anspruch 1, da- durch gekennzeichnet, daß der zylinderförmi¬ ge Kera ikkörper (1) mit einer durchgehenden axialen Durchflußbohrung (4) und einem hier¬ zu senkrecht verlaufenden Schlitz (8) ver¬ sehen und das keramische Verschlußteil (5) als Flachschieber ausgebildet ist.2. Shut-off and control element according to claim 1, characterized in that the zylinderförmi¬ ge ceramic ikkörper (1) with a continuous see axial flow bore (4) and a slot (8) extending perpendicularly here and the ceramic closure part (5) is designed as a flat slide.
3. Absperr- und Regelorgan nach Anspruch 2, da¬ durch gekennzeichnet, daß der zylinderförmi¬ ge Keramikkörper (1) aus drei Abschnitten be¬ steht, von denen die Endabschnitte (10, 12) am Gehäuse (2) befestigt sind, der Flachschie¬ ber zwischen dem mittleren Abschnitt (11) und einem Endabschnitt (10) und in einem Zwischen¬ raum (13) zwischen dem mittleren Abschnitt (11) und dem anderen Endabschnitt (12) eine Druckfeder (14) vorgesehen ist.3. Shut-off and control element according to claim 2, characterized in that the cylindrical ceramic body (1) consists of three sections, of which the end sections (10, 12) are attached to the housing (2), the flat slide A compression spring (14) is provided between the central section (11) and one end section (10) and in an intermediate space (13) between the central section (11) and the other end section (12).
4. Absperr- und Regelorgan nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Flachschie¬ ber mit einer der Durchflußbohrung (4) des zylinderförmigen Keramikkörpers (1) entspre¬ chenden Bohrung (6) versehen ist, die in der Offenstellung fluchtend zur Durchflu߬ bohrung (4) liegt.4. Shut-off and control element according to claim 2 or 3, characterized in that the flat slide valve is provided with one of the flow bore (4) of the cylindrical ceramic body (1) corre sponding bore (6) which, in the open position, is aligned with the flow ¬ bore (4).
5. Absperr- und Regelorgan nach Anspruch 1, da¬ durch gekennzeichnet, daß der zylinderförmi¬ ge Keramikkörper (1) eine Zwischenwand (16) in seiner Durchflußbohrung (4) und an seinem Zylindermantel eine die Gleitfläche (19) bil- dende Anschlifffläche aufweist, von der je eine Querbohrung (17, 18) zu den inneren En¬ den der geteilten Durchflußbohrung (4) führt und daß das keramische Verschlußteil (20) als Drehschieber ausgebildet ist, dessen Stirn¬ fläche (21) einen Verbindu*ngskanal (22) für die Querbohrungen (17, 18) aufweist. .5. Shut-off and control element according to claim 1, characterized in that the zylinderförmi¬ ge ceramic body (1) has an intermediate wall (16) in its flow bore (4) and on its cylinder jacket a sliding surface (19) forming abutting surface , from each of which a transverse bore (17, 18) leads to the inner ends of the divided flow bore (4) and that the ceramic closure part (20) as Rotary vane is formed whose Stirn¬ surface (21) has a Verbindu * (22) ngskanal for the transverse bores (17, 18). ,
6. Absperr- und Regelorgan nach Anspruch 5, da¬ durch gekennzeichnet, daß die eine Querboh¬ rung (18) in der Drehachse des Drehschiebers liegt und der Verbindungskanal (22) von der Drehachse radial nach außen bis über die an- dere Querbohrung (17) führt und von dort aus sichelförmig weitergeführt ist.6. Shut-off and control element according to claim 5, characterized in that the one Querboh¬ tion (18) lies in the axis of rotation of the rotary valve and the connecting channel (22) from the axis of rotation radially outward to the other transverse bore ( 17) leads and is continued from there in a crescent shape.
7. Absperr- und Regelorgan nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß der Drehschie- ber von einer am rohrförmigen Gehäuse (1) ge¬ lagerten Druckfeder (30) mit seiner Stirn¬ fläche (21) gegen die Gleitfläche (19) des rohrförmigen Keramikkörpers (1) gedrückt wird. 7. Shut-off and control element according to claim 5 or 6, characterized in that the rotary valve from a on the tubular housing (1) ge mounted compression spring (30) with its end face (21) against the sliding surface (19) of the tubular ceramic body (1) is pressed.
PCT/EP1985/000118 1984-04-03 1985-03-21 Shut off and regulation member for conduits and the like with a slide-like closing part WO1985004460A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3412404.7 1984-04-03
DE3412404 1984-04-03

Publications (1)

Publication Number Publication Date
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EP (1) EP0175728A1 (en)
JP (1) JPS61500982A (en)
AU (1) AU558077B2 (en)
WO (1) WO1985004460A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254957A1 (en) * 1986-07-31 1988-02-03 RUBINETTERIE STELLA S.p.A. Water mixer tap, of the single-lever type
EP0434658A1 (en) * 1989-12-21 1991-06-26 Fodor, Geza, Dipl.-Ing. Sliding valve
EP0437701A2 (en) * 1989-12-15 1991-07-24 Fmc Corporation Improved filling machine
US5499968A (en) * 1990-03-08 1996-03-19 Macnaught Pty Limited Flow controllers for fluid infusion sets
ES2160531A1 (en) * 1999-11-30 2001-11-01 Bitron Ind Espana Sa Valve, for controlling flow of liquids in car, has ceramic flat member with aperture, and sliding between fixed rings also having apertures, with coincidence between apertures regulating opening and closing
EP1376000A1 (en) * 2002-06-17 2004-01-02 Erben Kammerer KG Gate valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3479083B2 (en) * 1995-12-08 2003-12-15 サンーゴバン アブレイシブズ，インコーポレイティド Grinding disc holding plate

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Publication number Priority date Publication date Assignee Title
GB205696A (en) * 1922-10-26 1923-10-25 Joseph James William Farr Improvements in and relating to valves and cocks
US2100366A (en) * 1935-01-05 1937-11-30 Tyler Stephen Leslie Valve
US3448761A (en) * 1966-01-12 1969-06-10 United States Steel Corp Valve for regulating flow of high-temperature liquids
US3812882A (en) * 1973-01-02 1974-05-28 J Taylor Restrictor valve
US4033550A (en) * 1974-02-08 1977-07-05 Wheatley Company Water gate valve
GB2073851A (en) * 1980-02-19 1981-10-21 Ranco Inc Water Flow Control Valve
US4399834A (en) * 1981-10-05 1983-08-23 Baumann Hans D Chemically inert control valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB205696A (en) * 1922-10-26 1923-10-25 Joseph James William Farr Improvements in and relating to valves and cocks
US2100366A (en) * 1935-01-05 1937-11-30 Tyler Stephen Leslie Valve
US3448761A (en) * 1966-01-12 1969-06-10 United States Steel Corp Valve for regulating flow of high-temperature liquids
US3812882A (en) * 1973-01-02 1974-05-28 J Taylor Restrictor valve
US4033550A (en) * 1974-02-08 1977-07-05 Wheatley Company Water gate valve
GB2073851A (en) * 1980-02-19 1981-10-21 Ranco Inc Water Flow Control Valve
US4399834A (en) * 1981-10-05 1983-08-23 Baumann Hans D Chemically inert control valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254957A1 (en) * 1986-07-31 1988-02-03 RUBINETTERIE STELLA S.p.A. Water mixer tap, of the single-lever type
EP0437701A2 (en) * 1989-12-15 1991-07-24 Fmc Corporation Improved filling machine
EP0437701A3 (en) * 1989-12-15 1991-09-25 Fmc Corporation Improved filling machine
AU632639B2 (en) * 1989-12-15 1993-01-07 Fmc Corporation Nozzle assembly for a filling machine
EP0434658A1 (en) * 1989-12-21 1991-06-26 Fodor, Geza, Dipl.-Ing. Sliding valve
US5499968A (en) * 1990-03-08 1996-03-19 Macnaught Pty Limited Flow controllers for fluid infusion sets
ES2160531A1 (en) * 1999-11-30 2001-11-01 Bitron Ind Espana Sa Valve, for controlling flow of liquids in car, has ceramic flat member with aperture, and sliding between fixed rings also having apertures, with coincidence between apertures regulating opening and closing
EP1376000A1 (en) * 2002-06-17 2004-01-02 Erben Kammerer KG Gate valve

Also Published As

Publication number Publication date
AU558077B2 (en) 1987-01-15
EP0175728A1 (en) 1986-04-02
JPS61500982A (en) 1986-05-15
AU4215285A (en) 1985-11-01

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