EP1029188A1 - Valve - Google Patents

Valve

Info

Publication number
EP1029188A1
EP1029188A1 EP99952452A EP99952452A EP1029188A1 EP 1029188 A1 EP1029188 A1 EP 1029188A1 EP 99952452 A EP99952452 A EP 99952452A EP 99952452 A EP99952452 A EP 99952452A EP 1029188 A1 EP1029188 A1 EP 1029188A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve body
compressed air
channel
blow
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Withdrawn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
EP99952452A
Other languages
German (de)
French (fr)
Inventor
Bernhard ZÄHRINGER
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.)
Cerdia Produktions GmbH
Original Assignee
Rhodia Acetow 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 Rhodia Acetow GmbH filed Critical Rhodia Acetow GmbH
Publication of EP1029188A1 publication Critical patent/EP1029188A1/en
Withdrawn legal-status Critical Current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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston

Definitions

  • the present invention relates to a valve or a valve device, in particular for use in a system for the explosive expansion of a solid / liquid gas mixture.
  • the valve according to the invention which can be used in particular in a plant for the explosive expansion of a solid / liquid gas mixture, comprises a valve housing with a valve channel, a valve body which closes the valve channel in a closed position to close the valve, and in one Retraction position releases the valve channel to open the valve, the valve body executing a translational movement, and an actuating device which is translationally movable by means of a fluid, in particular compressed air, and is coupled to the valve body in order to remove the valve body from it when exposed to fluid Retreat position to be in its closed position to move the valve body from its closed position to its retracted position because of and / or when fluid is applied.
  • the valve according to the invention opens the valve channel or product channel at high speed and in a correspondingly short time, typically within about 30 ms, as a result of which the product flow through the valve channel is prevented.
  • the short opening times of the valve according to the invention avoid an undesired hindrance in the event of an explosive expansion of the product or solid / liquid gas mixture through the valve channel.
  • the actuating device preferably has an actuating cylinder with a chamber and a separating piston which can be moved back and forth in the chamber by means of compressed air and is coupled to the valve body in order to transmit its movement to the valve body.
  • valve body and the valve seat are preferably conical and are matched to one another in such a way that the conical valve body fits into the conical valve seat in a sealing position. This eliminates the need for special sealants and a self-adjusting seal is achieved. In addition, there is almost no friction when opening the valve in the conical piston or valve body.
  • a blow-out device working with compressed air or nitrogen is preferably provided, which removes material residues, in particular in the case of fibrous materials, from the valve by blow-out, as a result of which the valve is self-cleaned.
  • the valve body can be designed such that it closes a compressed air supply channel for blowing out when it is in its retracted position and releases the compressed air supply channel again so that material residues can be blown out when the valve body is in its closed position.
  • the valve body then also serves as a valve for the compressed air supply.
  • the blow-out device can have a blow-out valve which closes the compressed air supply duct when the pressure in the valve duct and / or in a valve body duct in which the valve body can be moved back and forth is higher than the pressure of the compressed air, and which the compressed air supply duct (18) releases to blow out material residues when the pressure in the valve channel and / or in the valve body channel becomes lower than the pressure of the compressed air.
  • the valve body is preferably held in its closed position and / or in its retracted position by means of a force which is based on constantly present compressed air, as a result of which the sealing function of the valve body in its valve seat can be readjusted independently of temperature expansion and wear effects.
  • FIG. 1 shows a sectional view through a preferred embodiment of the valve according to the invention, seen along the section line I-I of FIG. 2;
  • Figure 2 is a side view of the valve housing of the embodiment of Figure 1, in Seen in the direction of arrow II of Figure 1;
  • Figure 3 is a plan view of the valve housing of Figure 2, seen in the direction of arrow III of Figure 1;
  • FIG. 4 shows a perspective view of the valve housing with a valve body in the closed position
  • Figure 5 is a sectional view of a connecting part of the embodiment of Figure 1;
  • Figure 6 is a side view of a valve body of the embodiment of Figure 1;
  • FIG. 7 shows a sectional view of a ring hole nozzle of the embodiment in FIG. 1.
  • valve device 1 to 3 show a preferred embodiment of the valve device according to the invention, which essentially comprises a valve housing 1, an actuating device with actuating cylinder 3 or pneumatic cylinder, a connecting part 2, which is arranged between the valve housing 1 and the actuating cylinder 3, a valve body 4 and has a blow-out device for removing material residues from the valve.
  • the valve housing 1 (see also FIG. 4) is arranged, for example, between the reaction chamber of a pressure reactor in which a solid reacts with a liquefied gas under pressure, for example pulp with liquid ammonia with the addition of urea, and an expansion tank which is arranged below the pressure reactor is and in its expansion chamber the solid / liquid gas mixture expands explosively out of the reaction chamber.
  • the valve according to the invention thus serves as an outlet valve between the reaction chamber and the expansion chamber.
  • the valve housing 1 has a valve channel 10 which, when the valve is open, connects the reaction chamber of the pressure reactor with the chamber of the expansion tank continuously for the solid / liquid mixture.
  • valve housing 1 comprises a continuous valve body channel 11 which extends essentially at right angles to the valve channel 10 and crosses the valve channel 10.
  • the valve body 4 can be moved back and forth in a translatory or linear manner in order to close the valve channel 10 or to open or open the valve channel 10.
  • a valve seat 15 is defined by the adjacent wall regions of valve housing 1, valve body channel 11 in the area of the valve seat viewed along the longitudinal axis of valve body channel 11 in the direction of the closing movement of the valve body 4 has a conically narrowing cross section.
  • the valve channel 10 opens coming from the reaction chamber of the pressure reactor and narrows conically into the valve seat area, while the valve channel 10 widens in a funnel shape towards the expansion chamber in an outlet area 20.
  • the funnel-shaped outlet area 20 is connected to the valve body channel 11 via blow-out channels 12, 12. 1 of the blow-out device, which open at right angles into the valve body channel 11. Residues of solid or the solid / liquid gas mixture as material residues, which may be located in the valve body channel 11, can be blown out of the valve body channel 11 by means of compressed air via the blow-out channels.
  • the compressed air is supplied to the valve body channel 11 via compressed air supply channels 16, 17, 18, a continuous compressed air connection being formed between the compressed air supply channels 16, 17, 18, the valve body channel 11 and the blow-out channels 12, 12.1 for blowing out the solid residues.
  • the valve body 4 is essentially designed as a cylindrical piston (cf. FIG. 6) which has an end face 41, a flange face 42 and a peripheral face 45.
  • the peripheral side 45 or peripheral surface is in a cylinder section 43 and a cone section 44, the cone section 44 adjoining the cylinder section 43 and extending to the end face 41 of the valve body 4.
  • the cylinder section 43 has a cross section with a constant diameter, while the cone section 44 tapers from the cylinder section 43 to the end face 41 of the valve body 4, tapering approximately at an angle of 3 °, and ends obtusely in the end face 41.
  • the cylinder section 43 of the valve body 4 fits into the valve body channel 11 in order to obtain precise guidance of the valve body 4 in the valve body channel 11 during the reciprocating movement of the valve body 4.
  • the cone section 43 of the valve body fits into the conically tapering valve seat region of the valve body channel 11 in order to obtain a self-sealing and self-adjusting seat of the valve body 4 in the valve seat 15 independently of the effects of temperature expansion and material wear.
  • the connecting part 2 (see FIG. 5) has a continuous connecting part channel 5, the clear cross section of which corresponds to the clear cross section of the valve body channel 11 and represents a continuation of the valve body channel 11 of the valve housing 1 in the connecting part 2 when the connecting part 2 is fastened or screwed to the valve housing 1 .
  • the valve body 4 can consequently be moved from the connecting part channel 5 of the connecting part 2 into the valve body channel 11 of the valve housing 1 or vice versa.
  • the compressed air supply channels 16, 17 are formed, which open into the connecting part channel 5.
  • the valve body 4 closes the compressed air supply ducts 16, 17 in its retracted position, as shown in FIG. 1.
  • the actuating cylinder 3 has a cylinder chamber 13 in which a separating piston 14 can be moved back and forth.
  • the separating piston 14 is rigidly connected via a flanged rod 21 to the flange side 42 of the valve body 4, to which it is also flanged.
  • a translatory back and forth movement of the separating piston 14 in the chamber 13 of the actuating cylinder 3 results in a corresponding movement of the valve body 4.
  • Separating piston 14, rod 21, valve body 4, connecting part duct 5 and valve body duct 11 are axially aligned.
  • the separating piston 14 divides the chamber 13 of the Stellzy cylinder 3 into a section acted upon by compressed air and a section not acted upon by compressed air.
  • the actuating cylinder 3 is supplied with compressed air via a left-hand bore 22 which is arranged on the left-hand side of the separating piston 14. Another hole
  • the cylinder chamber 13 is arranged on the left side of the separating piston 14. The introduced compressed air is discharged from the right side of the thrust piston 14.
  • the valve according to the invention further comprises an annular hole nozzle 19 (see FIG. 7), which is fastened diametrically opposite to the connecting part 2 on the valve housing 1 and closes the valve body channel 11.
  • the ring hole nozzle 19 has a compressed air supply channel 18 in order to supply compressed air for blowing out solid residues through the blow-out channel 12.1 to the valve body channel 11.
  • the ring hole nozzle 19 has a tubular extension 24 which fits into the valve body channel 11 of the valve housing 1.
  • a disk-shaped valve piece 25 is movably guided, which has a plurality of radially outer passages 26, via which compressed air can get into the valve body duct 11 and thus into the exhaust duct 18 , if the disc-shaped valve piece 25 does not close the compressed air supply duct 18. If, on the other hand, the valve piece 25 closes the compressed air supply channel 18, the passages 26 of the valve piece 25 are closed and compressed air can no longer get into the valve body passage 11 from the ring-hole nozzle 19. The valve body passage 11 is then closed to the ring hole nozzle 19 or sealed against it.
  • valve piece 25 is moved to close the compressed air supply channel 18 of the ring nozzle 19, whereby compressed air is no longer from the
  • Ring-hole nozzle 19 can get into the valve housing 1.
  • the compressed air is discharged on the right side from the separating piston 14 of the actuating cylinder 3 via the bore 23 and at the same time compressed air is supplied on the left side of the separating piston 14 via the left-hand bore 22 of the chamber 13 on the left side of the separating piston 14, as a result of which the separating piston 14 follows right, moved to the connecting part 2 and, accordingly, the valve body 4 is moved out of its retracted position into the valve seat 15 of the valve housing 1 in order to seal the valve channel 10 of the valve housing 1 in a sealing manner.
  • valve seat 15 or valve body channel 10 and valve body 4 cannot lead to a leak in the valve device, since valve body 4 fits conically into its valve seat 15 and, due to the constant pressurization of the actuating cylinder 3 with compressed air, a corresponding self-adjusting adjustment of the valve body 4 is set up in the valve seat 15 or in the valve body channel 11.
  • compressed air flows via the compressed air channels 16, 17 of the connecting part 2 along the route from the connecting part channel 5, valve body channel 11 and blow-out channel 12 in order to remove residues of solid matter from this area.
  • valve piece 25 of the ring-hole nozzle 19 is moved towards the valve body 4 by the compressed air in the pipe extension 24, whereby the passages 26 of the valve piece 25 are released and compressed air via the compressed air supply duct 18, the passages 26 of the valve piece 25 and the valve body duct 11 into the blow-out duct 12.1, so that residues can also be removed from this area.
  • An automatic self-cleaning of the valve seat or the valve device is thus set up during the closing phase of the valve.
  • the valve body 4, the valve housing 1 and the connecting part 2 are made of tempered steel.
  • the surfaces of the valve body 4, the connecting subchannel 5, the valve body channel 11 and the valve seat 15 are surface-coated, for example by grinding, lapping and subsequent coating, in order to minimize adhesive forces and frictional forces. If this is useful or necessary for the special application, heating grooves can be inserted in suitable positions in the valve housing 1, which can be sealed tightly by flaps.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to a valve, especially for use in a system provided for the explosive expansion of a solid/liquid mixture. The valve comprises a valve housing (1) with a valve channel (10) and a valve body (4). Said valve body closes the valve channel (10) when in a closed position in order to close the valve, and opens the valve channel (10) when in a retracted position in order to open the valve, whereby the valve body (4) executes a translatory motion. The valve also comprises an adjusting device which can be moved in a translatory manner by means of a fluid, especially compressed air, and is coupled to the valve body (4) in order to move the valve body (4) from the retracted position thereof into its closed position when subjected to the action of compressed air and/or in order to move the valve body (4) from the closed position thereof into its retracted position when subjected to the action of compressed air.

Description

Ventil Valve
Die vorliegende Erfindung betrifft ein Ventil bzw. eine Ventileinrichtung, insbesondere zur Verwendung in einer Anlage für die explosionsartige Expansion eines Feststoff/Flüssiggas-Gemisches .The present invention relates to a valve or a valve device, in particular for use in a system for the explosive expansion of a solid / liquid gas mixture.
Bei diesen Anlagen wird die Befüllung eines Druckreaktors und die explosionsar- tige Entleerung des Druckreaktors bislang mittels Kugelhahnventilen, Kugelsegmentventilen oder Klappen ausgeführt, die beim Öffnen und Schließen des Ventils gedreht werden müssen. Das explosionsartige Austreten des Materials, das für gewöhnlich fasrige Werkstoffe enthält, aus dem Druckreaktor durch den Ventilkanal bzw. Explosionskanal in eine Expansionskammer kann durch das verzögerte Öff- nungsverhalten dieser Ventile unerwünscht behindert werden. Außerdem können sich Faserreste zwischen Sitz und Kugel bzw. Klappe einklemmen, was zu einer erhöhten Undichtigkeit dieser Ventile führen kann.In these systems, the filling of a pressure reactor and the explosion-like emptying of the pressure reactor have hitherto been carried out by means of ball valve valves, ball segment valves or flaps which have to be turned when the valve is opened and closed. The explosive escape of the material, which usually contains fibrous materials, from the pressure reactor through the valve channel or explosion channel into an expansion chamber can be undesirably hindered by the delayed opening behavior of these valves. In addition, fiber residues can get caught between the seat and ball or flap, which can lead to an increased leakage of these valves.
Aufgabe der vorliegenden Erfindung ist es deshalb, ein Ventil anzugeben, das bei den vorstehend beschriebenen Anlagen eine Behinderung des Produktdurchgangs durch den Ventilkanal beim Öffnen vermeidet.It is therefore an object of the present invention to provide a valve which, in the systems described above, avoids obstruction of the product passage through the valve channel when it is opened.
Diese Aufgabe wird durch das erfindungsgemäße Ventil des Anspruchs 1 gelöst. Demnach umfaßt das erfindungsgemäße Ventil, das insbesondere in einer Anlage für die explosionsartige Expansion eines Feststoff/Flüssiggas-Gemisches verwendbar ist, ein Ventilgehäuse mit einem Ventilkanal, einen Ventilkörper, der in einer Verschließposition den Ventilkanal verschließt, um das Ventil zu schließen, und in einer Rückzugsposition den Ventilkanal freigibt, um das Ventil zu öffnen, wobei der Ventilkörper eine translatorische Bewegung durchführt, und eine Stel- leinrichtung, die mittels eines Fluids, insbesondere Druckluft, translatorisch bewegbar ist und mit dem Ventilkörper gekoppelt ist, um bei Fluidbeaufschlagung den Ventilkörper von seiner Rückzugsposition in seine Verschließposition zu be- wegen und/oder bei Fluidbeaufschlagung den Ventilkörper von seiner Verschließposition in seine Rückzugsposition zu bewegen.This object is achieved by the valve of claim 1 according to the invention. Accordingly, the valve according to the invention, which can be used in particular in a plant for the explosive expansion of a solid / liquid gas mixture, comprises a valve housing with a valve channel, a valve body which closes the valve channel in a closed position to close the valve, and in one Retraction position releases the valve channel to open the valve, the valve body executing a translational movement, and an actuating device which is translationally movable by means of a fluid, in particular compressed air, and is coupled to the valve body in order to remove the valve body from it when exposed to fluid Retreat position to be in its closed position to move the valve body from its closed position to its retracted position because of and / or when fluid is applied.
Das erfindungsgemäße Ventil öffnet den Ventilkanal bzw. Produktkanal mit hoher Geschwindigkeit und in entsprechend kurzer Zeit, typischerweise innerhalb von etwa 30 ms, wodurch eine Behinderung des Produktstroms durch den Ventilkanal vermieden wird. Insbesondere vermeiden die kurzen Öffnungszeiten des erfindungsgemäßen Ventils eine unerwünschte Behinderung bei einer explosionsartigen Expansion des Produkts bzw. Feststoff/Flüssiggas-Gemisches durch den Ventilka- nal hindurch.The valve according to the invention opens the valve channel or product channel at high speed and in a correspondingly short time, typically within about 30 ms, as a result of which the product flow through the valve channel is prevented. In particular, the short opening times of the valve according to the invention avoid an undesired hindrance in the event of an explosive expansion of the product or solid / liquid gas mixture through the valve channel.
Bevorzugt hat die Stelleinrichtung einen Stellzylinder mit einer Kammer und einem Trennkolben, der in der Kammer translatorisch mittels Druckluft hin und her bewegbar ist und mit dem Ventilkörper gekoppelt ist, um seine Bewegung auf den Ventilkörper zu übertragen. Dadurch können aufwendige und energieverbrauchende Konstruktionen zum Umsetzen der Bewegung des Stellglieds in eine Drehung des Ventilkörpers, z.B. durch ein Getriebe oder ähnliches, wie dies nach dem Stand der Technik notwendig ist, vermieden werden, woraus eine höhere Zuverlässigkeit und eine höhere Geschwindigkeit des erfindungsgemäßen Ventils re- sultiert.The actuating device preferably has an actuating cylinder with a chamber and a separating piston which can be moved back and forth in the chamber by means of compressed air and is coupled to the valve body in order to transmit its movement to the valve body. As a result, complex and energy-consuming constructions for converting the movement of the actuator into a rotation of the valve body, e.g. can be avoided by a transmission or the like, as is necessary according to the prior art, which results in a higher reliability and a higher speed of the valve according to the invention.
Der Ventilkörper und der Ventilsitz sind bevorzugt konisch ausgebildet und derart aneinander angepaßt, daß der konische Ventilkörper in seiner Verschließposition in den konischen Ventilsitz abdichtend einpaßt. Dadurch erübrigen sich spezielle Dichtmittel, und es wird eine selbstnachstellende Abdichtung erreicht. Außerdem gibt es bei dem konischen Kolben bzw. Ventilkörper fast keine Reibung beim Öffnen des Ventils.The valve body and the valve seat are preferably conical and are matched to one another in such a way that the conical valve body fits into the conical valve seat in a sealing position. This eliminates the need for special sealants and a self-adjusting seal is achieved. In addition, there is almost no friction when opening the valve in the conical piston or valve body.
Bevorzugt ist eine mit Druckluft oder Stickstoff arbeitende Ausblaseinrichtung vorgesehen, die Materialrückstände, insbesondere im Fall von fasrigen Materialien, aus dem Ventil durch Ausblasen entfernt, wodurch eine Selbstreinigung des Ventils erhalten wird. Der Ventilkörper kann so ausgebildet sein, daß er einen Druckluftzuführkanal für das Ausblasen verschließt, wenn er in seiner Rückzugsposition ist, und den Druckluftzuführkanal wieder freigibt, damit Materialrückstände ausgeblasen wer- den können, wenn der Ventilkörper in seiner Verschließposition ist. Der Ventilkörper dient dann gleichzeitig als Ventil für die Druckluftzuführung.A blow-out device working with compressed air or nitrogen is preferably provided, which removes material residues, in particular in the case of fibrous materials, from the valve by blow-out, as a result of which the valve is self-cleaned. The valve body can be designed such that it closes a compressed air supply channel for blowing out when it is in its retracted position and releases the compressed air supply channel again so that material residues can be blown out when the valve body is in its closed position. The valve body then also serves as a valve for the compressed air supply.
Die Ausblaseinrichtung kann ein Ausblasventil aufweisen, das den Druckluftzu- führkanal verschließt, wenn der Druck im Ventilkanal und/oder in einem Ventil- körperkanal, in dem der Ventilkörper hin und her bewegbar ist, höher als der Druck der Druckluft ist, und das den Druckluftzuführkanal (18) freigibt, um Materialreste auszublasen, wenn der Druck im Ventilkanal und/oder im Ventilkörperkanal niedriger als der Druck der Druckluft wird.The blow-out device can have a blow-out valve which closes the compressed air supply duct when the pressure in the valve duct and / or in a valve body duct in which the valve body can be moved back and forth is higher than the pressure of the compressed air, and which the compressed air supply duct (18) releases to blow out material residues when the pressure in the valve channel and / or in the valve body channel becomes lower than the pressure of the compressed air.
Bevorzugt ist der Ventilkörper mittels einer Kraft, die auf ständig anstehender Druckluft beruht, in seiner Verschließposition und/oder seiner Rückzugsposition gehalten, wodurch eine Selbstnachstellung der Abdichtfunktion des Ventilkörpers in seinem Ventilsitz unabhängig von Temperaturausdehnungs- und Abnutzungseffekten erreicht wird.The valve body is preferably held in its closed position and / or in its retracted position by means of a force which is based on constantly present compressed air, as a result of which the sealing function of the valve body in its valve seat can be readjusted independently of temperature expansion and wear effects.
Weitere vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous developments of the invention can be found in the subclaims.
Weitere Vorteile, vorteilhafte Weiterbildungen und Anwendungsmöglichkeiten der vorliegenden Erfindung sind in der nachfolgenden Beschreibung einer bevorzugten Ausführungsform der Erfindung in Verbindung mit den beiliegenden Zeichnungen angegeben. Es zeigen:Further advantages, advantageous developments and possible uses of the present invention are specified in the following description of a preferred embodiment of the invention in conjunction with the accompanying drawings. Show it:
Figur 1 eine Schnittansicht durch eine bevorzugte Ausführungsform des erfin- dungsgemäßen Ventils, entlang der Schnittlinie I-I der Figur 2 gesehen;1 shows a sectional view through a preferred embodiment of the valve according to the invention, seen along the section line I-I of FIG. 2;
Figur 2 eine Seitenansicht des Ventilgehäuses der Ausführungsform der Figur 1, in Richtung des Pfeiles II der Figur 1 gesehen;Figure 2 is a side view of the valve housing of the embodiment of Figure 1, in Seen in the direction of arrow II of Figure 1;
Figur 3 eine Draufsicht auf das Ventilgehäuse der Figur 2, in Richtung des Pfeiles III der Figur 1 gesehen;Figure 3 is a plan view of the valve housing of Figure 2, seen in the direction of arrow III of Figure 1;
Figur 4 eine perspektivische Ansicht des Ventilgehäuses mit einem Ventilkörper in Verschließposition;FIG. 4 shows a perspective view of the valve housing with a valve body in the closed position;
Figur 5 eine Schnittansicht eines Verbindungsteils der Ausführungsform der Figur 1;Figure 5 is a sectional view of a connecting part of the embodiment of Figure 1;
Figur 6 eine Seitenansicht eines Ventilkörpers der Ausführungsform der Figur 1; undFigure 6 is a side view of a valve body of the embodiment of Figure 1; and
Figur 7 eine Schnittansicht einer Ringlochdüse der Ausführungsform der Figur 1.FIG. 7 shows a sectional view of a ring hole nozzle of the embodiment in FIG. 1.
In den Figuren 1 bis 3 ist eine bevorzugte Ausführungsform der erfindungsgemäßen Ventileinrichtung gezeigt, die im wesentlichen ein Ventilgehäuse 1, eine Stelleinrichtung mit Stellzylinder 3 bzw. Pneumatikzylinder, ein Verbindungsteil 2, das zwischen dem Ventilgehäuse 1 und dem Stellzylinder 3 angeordnet ist, einen Ventilkörper 4 und eine Ausblaseinrichtung zur Entfernung von Materialrückständen aus dem Ventil aufweist.1 to 3 show a preferred embodiment of the valve device according to the invention, which essentially comprises a valve housing 1, an actuating device with actuating cylinder 3 or pneumatic cylinder, a connecting part 2, which is arranged between the valve housing 1 and the actuating cylinder 3, a valve body 4 and has a blow-out device for removing material residues from the valve.
Das Ventilgehäuse 1 (vgl. auch Figur 4) wird z.B. zwischen der Reaktionskammer eines Druckreaktors, in der ein Feststoff mit einem verflüssigtem Gas unter Druck reagiert, z.B. Zellstoff mit flüssigem Ammoniak unter Zugabe von Harnstoff, und einem Expansionsbehälter angeordnet, der unterhalb des Druckreaktors angeordnet ist und in dessen Expansionskammer das Feststoff/Flüssiggas-Gemisch aus der Reaktionskammer heraus explosionsartig expandiert. Das erfindungsgemäße Ventil dient somit als Auslaßventil zwischen Reaktionskammer und Expansionskammer. Das Ventilgehäuse 1 hat einen Ventilkanal 10, der bei geöffnetem Ventil die Reaktionskammer des Druckreaktors mit der Kammer des Expansionsbehälters durchgängig für das Feststoff/Flüssigkeits-Gemisch verbindet. Weiterhin umfaßt das Ventilgehäuse 1 einen durchgängigen Ventilkörperkanal 11, der sich im wesentlichen rechtwinklig zu dem Ventilkanal 10 erstreckt und den Ventilkanal 10 kreuzt. Im Ventilkörperkanal 11 ist der Ventilkörper 4 translatorisch bzw. linear hin und her bewegbar, um den Ventilkanal 10 zu verschließen bzw. den Ventilkanal 10 freizugeben bzw. zu öffnen. An der Kreuzung bzw. im Kreuzungsbereich von Ventilkanal 10 und Ventilkörperkanal 11 ist ein Ventilsitz 15 durch die angrenzenden Wandbereiche des Ventilgehäuses 1 definiert, wobei der Ventilkörperkanal 11 im Bereich des Ventilsitzes einen entlang der Längsachse des Ventilkörperkanals 11 gesehen sich in die Richtung der Verschließbewegung des Ventilkörpers 4 konisch verengenden Querschnitt aufweist. Der Ventilkanal 10 mündet von der Reakionskammer des Druckreaktors kommend und sich konisch verengend in den Ventilsitz-Bereich ein, während der Ventilkanal 10 sich zur Expansionskammer hin in einem Ausgangsbereich 20 trichterförmig aufweitet.The valve housing 1 (see also FIG. 4) is arranged, for example, between the reaction chamber of a pressure reactor in which a solid reacts with a liquefied gas under pressure, for example pulp with liquid ammonia with the addition of urea, and an expansion tank which is arranged below the pressure reactor is and in its expansion chamber the solid / liquid gas mixture expands explosively out of the reaction chamber. The valve according to the invention thus serves as an outlet valve between the reaction chamber and the expansion chamber. The valve housing 1 has a valve channel 10 which, when the valve is open, connects the reaction chamber of the pressure reactor with the chamber of the expansion tank continuously for the solid / liquid mixture. Furthermore, the valve housing 1 comprises a continuous valve body channel 11 which extends essentially at right angles to the valve channel 10 and crosses the valve channel 10. In the valve body channel 11, the valve body 4 can be moved back and forth in a translatory or linear manner in order to close the valve channel 10 or to open or open the valve channel 10. At the intersection or in the area of intersection of valve channel 10 and valve body channel 11, a valve seat 15 is defined by the adjacent wall regions of valve housing 1, valve body channel 11 in the area of the valve seat viewed along the longitudinal axis of valve body channel 11 in the direction of the closing movement of the valve body 4 has a conically narrowing cross section. The valve channel 10 opens coming from the reaction chamber of the pressure reactor and narrows conically into the valve seat area, while the valve channel 10 widens in a funnel shape towards the expansion chamber in an outlet area 20.
Der trichterförmige Ausgangsbereich 20 ist über Ausblaskanäle 12, 12.1 der Aus- blaseinrichtung, die rechtwinklig in den Ventilkörperkanal 11 einmünden, mit dem Ventilkörperkanal 11 verbunden. Über die Ausblaskanäle können Reste von Feststoff bzw. des Feststoff/Flüssiggas-Gemisches als Materialrückstände, die sich möglicherweise im Ventilkörperkanal 11 befinden, aus dem Ventilkörperkanal 11 mittels Druckluft ausgeblasen werden. Die Druckluft wird über Druckluftzuführ- kanäle 16, 17, 18 dem Ventilkörperkanal 11 zugeführt, wobei eine durchgängige Druckluftverbindung zwischen den Druckluftzuführgängen 16, 17, 18, dem Ventilkörperkanal 11 und den Ausblaskanälen 12, 12.1 zum Ausblasen der Feststoffreste ausgebildet ist.The funnel-shaped outlet area 20 is connected to the valve body channel 11 via blow-out channels 12, 12. 1 of the blow-out device, which open at right angles into the valve body channel 11. Residues of solid or the solid / liquid gas mixture as material residues, which may be located in the valve body channel 11, can be blown out of the valve body channel 11 by means of compressed air via the blow-out channels. The compressed air is supplied to the valve body channel 11 via compressed air supply channels 16, 17, 18, a continuous compressed air connection being formed between the compressed air supply channels 16, 17, 18, the valve body channel 11 and the blow-out channels 12, 12.1 for blowing out the solid residues.
Der Ventilkörper 4 ist im wesentlichen als zylindrischer Kolben (vgl. Figur 6) ausgelegt, der eine Stirnseite 41, eine Anflanschseite 42 und eine Umfangsseite 45 aufweist. Die Umfangsseite 45 bzw. Umfangsfläche ist in einen Zylinderabschnitt 43 und einen Konusabschnitt 44 aufgeteilt, wobei sich der Konusabschnitt 44 an den Zylinderabschnitt 43 anschließt und sich bis zur Stirnseite 41 des Ventilkörpers 4 erstreckt. Der Zylinderabschnitt 43 hat einen Querschnitt mit konstantem Durchmesser, während der Konusabschnitt 44 sich vom Zylinderabschnitt 43 ausgehend zur Stirnseite 41 des Ventilkörpers 4 hin konisch zulaufend verjüngt, etwa unter einem Winkel von 3°, und in der Stirnseite 41 stumpf endet. Der Zylinderabschnitt 43 des Ventilkörpers 4 paßt in den Ventilkörperkanal 11 ein, um eine genaue Führung des Ventilkörpers 4 im Ventilkörperkanal 11 bei der Hin- und Herbewegung des Ventilkörpers 4 zu erhalten. Der Konusabschnitt 43 des Ventil- körpes 1 paßt dagegen in den konisch zulaufenden Ventilsitz-Bereich des Ventilkörperkanals 11 ein, um einen selbstdichtenden und selbstnachstellenden Sitz des Ventilkörpers 4 im Ventilsitz 15 unabhängig von Temperaturausdehnungs- und Materialabnutzungs-Effekten zu erhalten.The valve body 4 is essentially designed as a cylindrical piston (cf. FIG. 6) which has an end face 41, a flange face 42 and a peripheral face 45. The peripheral side 45 or peripheral surface is in a cylinder section 43 and a cone section 44, the cone section 44 adjoining the cylinder section 43 and extending to the end face 41 of the valve body 4. The cylinder section 43 has a cross section with a constant diameter, while the cone section 44 tapers from the cylinder section 43 to the end face 41 of the valve body 4, tapering approximately at an angle of 3 °, and ends obtusely in the end face 41. The cylinder section 43 of the valve body 4 fits into the valve body channel 11 in order to obtain precise guidance of the valve body 4 in the valve body channel 11 during the reciprocating movement of the valve body 4. The cone section 43 of the valve body 1, on the other hand, fits into the conically tapering valve seat region of the valve body channel 11 in order to obtain a self-sealing and self-adjusting seat of the valve body 4 in the valve seat 15 independently of the effects of temperature expansion and material wear.
Das Verbindungsteil 2 (vgl. Figur 5) hat einen durchgehenden Verbindungsteilkanal 5, dessen lichter Querschnitt dem lichten Querschnitt des Ventilkörperkanals 11 entspricht und eine Fortsetzung des Ventilkörperkanals 11 des Ventilgehäuses 1 im Verbindungsteil 2 darstellt, wenn das Verbindungsteil 2 am Ventilgehäuse 1 befestigt oder angeschraubt ist. Der Ventilkörper 4 ist folglich vom Verbindungs- teilkanal 5 des Verbindungsteils 2 in den Ventilkörperkanal 11 des Ventilgehäuses 1 hinein oder umgekehrt bewegbar. In den Wänden des Verbindungsteils 2 sind die Druckluftzuführkanäle 16 , 17 ausgebildet, die in den Verbindungsteilkanal 5 einmünden. Der Ventilkörper 4 verschließt die Druckluftzuführkanäle 16, 17 in seiner Rückzugsposition, wie dies in Figur 1 gezeigt ist.The connecting part 2 (see FIG. 5) has a continuous connecting part channel 5, the clear cross section of which corresponds to the clear cross section of the valve body channel 11 and represents a continuation of the valve body channel 11 of the valve housing 1 in the connecting part 2 when the connecting part 2 is fastened or screwed to the valve housing 1 . The valve body 4 can consequently be moved from the connecting part channel 5 of the connecting part 2 into the valve body channel 11 of the valve housing 1 or vice versa. In the walls of the connecting part 2, the compressed air supply channels 16, 17 are formed, which open into the connecting part channel 5. The valve body 4 closes the compressed air supply ducts 16, 17 in its retracted position, as shown in FIG. 1.
Der Stellzylinder 3 hat eine Zylinderkammer 13, in der ein Trennkolben 14 hin und her bewegbar ist. Der Trennkolben 14 ist über eine angeflanschte Stange 21 mit der Anflanschseite 42 des Ventilkörpers 4 starr verbunden, an der er ebenfalls angeflanscht ist. Eine translatorische Hin- und Herbewegung des Trennkolbens 14 in der Kammer 13 des Stellzylinders 3 resultiert in einer entsprechenden Bewegung des Ventilkörpers 4. Trennkolben 14, Stange 21, Ventilkörper 4, Verbindungsteilkanal 5 und Ventilkörperkanal 11 sind achsengleich. Der Trennkolben 14 unterteilt die Kammer 13 des Stellzy linders 3 in einen mit Druckluft beaufschlagten Abschnitt und einen mit Druckluft unbeaufschlagten Abschnitt. Der Stellzylinder 3 wird mit Druckluft über eine linksseitige Bohrung 22 versorgt, die linksseitig vom Trennkolben 14 angeordnet ist. Eine weitere BohrungThe actuating cylinder 3 has a cylinder chamber 13 in which a separating piston 14 can be moved back and forth. The separating piston 14 is rigidly connected via a flanged rod 21 to the flange side 42 of the valve body 4, to which it is also flanged. A translatory back and forth movement of the separating piston 14 in the chamber 13 of the actuating cylinder 3 results in a corresponding movement of the valve body 4. Separating piston 14, rod 21, valve body 4, connecting part duct 5 and valve body duct 11 are axially aligned. The separating piston 14 divides the chamber 13 of the Stellzy cylinder 3 into a section acted upon by compressed air and a section not acted upon by compressed air. The actuating cylinder 3 is supplied with compressed air via a left-hand bore 22 which is arranged on the left-hand side of the separating piston 14. Another hole
23, ist rechtsseitig vom Trennkolben 14 angeordnet. Die Zylinderkammer 13 ist linksseitig vom Trennkolben 14 angeordnet. Die eingeführte Druckluft wird rechtsseitig vom Trermkolben 14 abgeführt.23, is arranged on the right side of the separating piston 14. The cylinder chamber 13 is arranged on the left side of the separating piston 14. The introduced compressed air is discharged from the right side of the thrust piston 14.
Das erfϊndungsgemäße Ventil umfaßt weiterhin eine Ringlochdüse 19 (vgl. Figur 7), die am Ventilgehäuse 1 dem Verbindungsteil 2 diametral gegenüberliegend befestigt ist und den Ventilkörperkanal 11 verschließt. Die Ringlochdüse 19 weist einen Druckluftzuführkanal 18 auf, um Druckluft für das Ausblasen von Feststoffresten durch den Ausblaskanal 12.1 dem Ventilkörperkanal 11 zuzuführen. Die Ringlochdüse 19 hat einen Rohransatz 24, der in den Ventilkörperkanal 11 des Ventilgehäuses 1 einpaßt. In dem Rohransatz 24, dessen lichte Weite größer als die lichte Weite des Druckluftzuführkanals 18 ist, ist ein scheibenförmiges Ventilstück 25 bewegbar geführt, das mehrere radial außen liegende Gänge 26 aufweist, über die Druckluft in den Ventilkörperkanal 11 und damit in den Ausblaskanal 18 gelangen kann, wenn das scheibenförmige Ventilstück 25 den Druckluftzuführkanal 18 nicht verschließt. Verschließt dagegen das Ventilstück 25 den Druckluftzuführkanal 18, sind die Gänge 26 des Ventilstücks 25 verschlossen und Druckluft kann nicht mehr von der Ringlochdüse 19 her in den Ventilkörpergang 11 gelangen. Der Ventilkörpergang 11 ist dann zur Ringlochdüse 19 hin verschlossen bzw. gegen dieses abgedichtet.The valve according to the invention further comprises an annular hole nozzle 19 (see FIG. 7), which is fastened diametrically opposite to the connecting part 2 on the valve housing 1 and closes the valve body channel 11. The ring hole nozzle 19 has a compressed air supply channel 18 in order to supply compressed air for blowing out solid residues through the blow-out channel 12.1 to the valve body channel 11. The ring hole nozzle 19 has a tubular extension 24 which fits into the valve body channel 11 of the valve housing 1. In the tube extension 24, the clear width of which is greater than the clear width of the compressed air supply duct 18, a disk-shaped valve piece 25 is movably guided, which has a plurality of radially outer passages 26, via which compressed air can get into the valve body duct 11 and thus into the exhaust duct 18 , if the disc-shaped valve piece 25 does not close the compressed air supply duct 18. If, on the other hand, the valve piece 25 closes the compressed air supply channel 18, the passages 26 of the valve piece 25 are closed and compressed air can no longer get into the valve body passage 11 from the ring-hole nozzle 19. The valve body passage 11 is then closed to the ring hole nozzle 19 or sealed against it.
Nachfolgend wird die Funktionsweise der oben beschriebenen Ausführungsform der erfindungsgemäßen Ventileinrichtung erläutert. In der in Figur 1 gezeigten Rückzugsposition des Ventilkörpers 4 ist der Ventilkanal 10 des Ventilgehäuses 1 durchgängig freigegeben, das Ventil ist damit geöffnet, und das Reaktionsgemisch aus der Reaktionskammer kann durch den Ventilkanal 10 des Ventilgehäuses 1 hindurch in die darunterliegende Expansionskammer expandieren. In der gezeigten Rückzugsposition des Ventilkörpers 4 ist der Trennkolben 14 des Stellzy linders 3 in seiner linken Anschlagposition, wobei die Zylinderkammer 13 rechtsseitig über das rechtsseitige Bohrung 23 mit Druckluft beaufschlagt ist. Durch denThe mode of operation of the embodiment of the valve device according to the invention described above is explained below. In the retracted position of the valve body 4 shown in FIG. 1, the valve channel 10 of the valve housing 1 is continuously released, the valve is thus opened, and the reaction mixture from the reaction chamber can expand through the valve channel 10 of the valve housing 1 into the expansion chamber underneath. In the shown Retracted position of the valve body 4 is the separating piston 14 of the Stellzy cylinder 3 in its left stop position, the cylinder chamber 13 being pressurized with compressed air on the right-hand side via the right-hand bore 23. By the
Expansionsdruck wird das Ventilstück 25 bewegt, um den Druckluftzuführkanal 18 der Ringlochdüse 19 zu verschließen, wodurch keine Druckluft mehr von derExpansion pressure, the valve piece 25 is moved to close the compressed air supply channel 18 of the ring nozzle 19, whereby compressed air is no longer from the
Ringlochdüse 19 her in das Ventilgehäuse 1 gelangen kann.Ring-hole nozzle 19 can get into the valve housing 1.
Nach abgelaufener Feststoff/Flüssiggas-Expansion wird die Druckluft rechtsseitig vom Trennkolben 14 des Stellzylinders 3 über der Bohrung 23 abgelassen und gleichzeitig wird Druckluft linksseitig vom Trennkolben 14 über das linksseitige Bohrung 22 der Kammer 13 linksseitig des Trennkolbens 14 zugeführt, wodurch sich der Trennkolben 14 nach rechts, zum Verbindungsteil 2 hin bewegt und entsprechend der Ventilkörper 4 aus seiner Rückzugsposition heraus in den Ventilsitz 15 des Ventilgehäuses 1 hinein bewegt wird, um den Ventilkanal 10 des Ventilge- häuses 1 abdichtend zu verschließen. Temperaturausdehnungen und etwaige Fertigungstoleranzen von Ventilsitz 15 bzw. Ventilkörperkanal 10 und Ventilkörper 4 können dabei nicht zu einer Undichtheit der Ventileinrichtung führen, da der Ventilkörper 4 konisch in seinen Ventilsitz 15 einpaßt und durch die ständige Druckluft-Beaufschlagung des Stellzylinders 3 eine entsprechende selbststellende Nachführung des Ventilkörpers 4 im Ventilsitz 15 bzw. im Ventilkörperkanal 11 eingerichtet ist. Hat der Ventilkörper 4 seine Verschließposition im Ventilsitz 15 erreicht, strömt Druckluft über die Druckluftkanäle 16, 17 des Verbindungsteils 2 entlang der Strecke aus Verbindungsteilkanal 5, Ventilkörperkanal 11 und Ausblaskanal 12, um Reste von Feststoff aus diesem Bereich zu entfernen. Gleichzeitig wird das Ventilstück 25 der Ringlochdüse 19 durch die anstehende Druckluft im Rohransatz 24 zum Ventilkörper 4 hin bewegt, wodurch die Gänge 26 des Ventilstücks 25 freigegeben werden und Druckluft über den Druckluftzuführkanal 18, die Gänge 26 des Ventilstücks 25 und den Ventilkörperkanal 11 in den Ausblaskanal 12.1 gelangt, um aus diesem Bereich ebenfalls Rückstände entfernen zu kön- nen. Damit ist eine automatische Selbstreinigung des Ventilsitzes bzw. der Ventileinrichtung während der Verschlußphase des Ventils eingerichtet. Der Ventilkörper 4, das Ventil gehäuse 1 und das Verbindungsteil 2 bestehen aus vergütetem Stahl. Die Oberflächen des Ventilkörpers 4, des Verbindungsteilkanals 5, des Ventilkörperkanals 11 und des Ventilsitzes 15 sind oberflächenvergütet, z.B. durch Schleifen, Läppen und anschließendes Beschichten, um Adhäsionskräfte und Reibungskräfte zu minimieren. Wenn dies für den speziellen Anwendungsfall sinnvoll oder erforderlich ist, können im Ventilgehäuse 1 an geeigneten Stellen Heiznuten eingefügt sein, die durch Klappen dicht verschlossen werden können.After solid / liquid gas expansion has expired, the compressed air is discharged on the right side from the separating piston 14 of the actuating cylinder 3 via the bore 23 and at the same time compressed air is supplied on the left side of the separating piston 14 via the left-hand bore 22 of the chamber 13 on the left side of the separating piston 14, as a result of which the separating piston 14 follows right, moved to the connecting part 2 and, accordingly, the valve body 4 is moved out of its retracted position into the valve seat 15 of the valve housing 1 in order to seal the valve channel 10 of the valve housing 1 in a sealing manner. Temperature expansions and any manufacturing tolerances of valve seat 15 or valve body channel 10 and valve body 4 cannot lead to a leak in the valve device, since valve body 4 fits conically into its valve seat 15 and, due to the constant pressurization of the actuating cylinder 3 with compressed air, a corresponding self-adjusting adjustment of the valve body 4 is set up in the valve seat 15 or in the valve body channel 11. When the valve body 4 has reached its closed position in the valve seat 15, compressed air flows via the compressed air channels 16, 17 of the connecting part 2 along the route from the connecting part channel 5, valve body channel 11 and blow-out channel 12 in order to remove residues of solid matter from this area. At the same time, the valve piece 25 of the ring-hole nozzle 19 is moved towards the valve body 4 by the compressed air in the pipe extension 24, whereby the passages 26 of the valve piece 25 are released and compressed air via the compressed air supply duct 18, the passages 26 of the valve piece 25 and the valve body duct 11 into the blow-out duct 12.1, so that residues can also be removed from this area. An automatic self-cleaning of the valve seat or the valve device is thus set up during the closing phase of the valve. The valve body 4, the valve housing 1 and the connecting part 2 are made of tempered steel. The surfaces of the valve body 4, the connecting subchannel 5, the valve body channel 11 and the valve seat 15 are surface-coated, for example by grinding, lapping and subsequent coating, in order to minimize adhesive forces and frictional forces. If this is useful or necessary for the special application, heating grooves can be inserted in suitable positions in the valve housing 1, which can be sealed tightly by flaps.
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Claims

Patentansprüche claims
1. Ventil, insbesondere zur Verwendung in einer Anlage für die explosionsartige1. Valve, especially for use in a plant for the explosive
Expansion eines Feststoff/Flüssiggas-Gemisches, wobei das Ventil folgendes umfaßt: ein Ventilgehäuse (1) mit einem Ventilkanal (10), einen Ventilkörper (4), der in einer Verschließposition den Ventilkanal (10) verschließt, um das Ventil zu schließen, und in einer Rückzugsposition den Ventilkanal (10) freigibt, um das Ventil zu öffnen, wobei der Ventilkörper (4) eine translatorische Bewegung durchführt, und eine Stelleinrichtung, die mittels eines Fluids, insbesondere Druckluft, translatorisch bewegbar ist und mit dem Ventilkörper (4) gekoppelt ist, um bei Fluidbe- aufschlagung den Ventilkörper (4) von seiner Rückzugsposition in seine Verschließposition zu bewegen und/oder bei Fluidbeaufschlagung den Ventilkörper (4) von seiner Verschließposition in seine Rückzugsposition zu bewegen.Expansion of a solid / liquid gas mixture, the valve comprising: a valve housing (1) with a valve channel (10), a valve body (4) which closes the valve channel (10) in a closed position to close the valve, and in a retracted position releases the valve channel (10) in order to open the valve, the valve body (4) carrying out a translational movement, and an actuating device which can be moved translationally by means of a fluid, in particular compressed air, and which is coupled to the valve body (4) is to move the valve body (4) from its retracted position to its closed position when fluid is applied and / or to move the valve body (4) from its closed position to its retracted position when fluid is applied.
2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß die Stelleinrichtung einen Stellzylinder (3) mit einer Kammer (13) und einem Trennkolben (14) hat, der in der2. Valve according to claim 1, characterized in that the actuating device has an actuating cylinder (3) with a chamber (13) and a separating piston (14) which in the
Kammer (14) translatorisch mittels Druckluft hin und her bewegbar ist und mit dem Ventilkörper (4) gekoppelt ist, um seine Bewegung auf den Ventilkörper (4) zu übertragen.Chamber (14) can be moved back and forth by means of compressed air and is coupled to the valve body (4) in order to transmit its movement to the valve body (4).
3. Ventil nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß der Ventilkörper (4) und der Ventilsitz (15) konisch ausgebildeten und derart aneinander angepaßt sind, daß der konische Ventilkörper (4) in seiner Verschließposition in den konischen Ventilsitz (15) abdichtend einpaßt.3. Valve according to claim 1 or claim 2, characterized in that the valve body (4) and the valve seat (15) are conical and are adapted to one another such that the conical valve body (4) in its closed position in the conical valve seat (15) fits tightly.
4. Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine mit Druckluft arbeitende Ausblaseinrichtung vorgesehen ist, die Materialrückstände aus dem Ventil durch Ausblasen entfernt. 4. Valve according to one of claims 1 to 3, characterized in that a blowing device working with compressed air is provided, the material residues removed from the valve by blowing.
5. Ventil nach Anspruch 4, dadurch gekennzeichnet, daß die Ausblaseinrichtung arbeitet, wenn der Ventilkörper (4) in seiner Verschließposition ist.5. Valve according to claim 4, characterized in that the blow-out device operates when the valve body (4) is in its closed position.
6. Ventil nach Anspruch 4 oder Anspruch 5, dadurch gekennzeichnet, daß die6. Valve according to claim 4 or claim 5, characterized in that the
Ausblaseinrichtung mindestens einen Druckluftzuführkanal (16, 17, 18) aufweist.Blow-out device has at least one compressed air supply duct (16, 17, 18).
7. Ventil nach Anspruch 6, dadurch gekennzeichnet, daß der Ventilkörper (4) den Druckluftzuführkanal (16, 17) verschließt, wenn er in seiner Rückzugsposition ist, und daß der Ventilkörper (4) den Druckluftzuführkanal (16, 17) freigibt, damit Materialrückstände ausgeblasen werden können, wenn der Ventilkörper (4) in seiner Verschließposition ist.7. Valve according to claim 6, characterized in that the valve body (4) closes the compressed air supply channel (16, 17) when it is in its retracted position, and that the valve body (4) releases the compressed air supply channel (16, 17), so that material residues can be blown out when the valve body (4) is in its closed position.
8. Ventil nach Anspruch 6 oder Anspruch 7, dadurch gekennzeichnet, daß die Druckluft im Druckluftzuführkanal (16, 17, 18) ständig ansteht.8. Valve according to claim 6 or claim 7, characterized in that the compressed air in the compressed air supply channel (16, 17, 18) is constantly present.
9. Ventil nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die Ausblaseinrichtung eine Ringlochdüse (19) aufweist, das den Druckluftzuführkanal (18) verschließt, wenn der Druck im Ventilkanal (10) und/oder in einem Ventil- körperkanal (11), in dem der Ventilkörper (4) hin und her bewegbar ist, höher als der Druck der Druckluft ist, und das den Druckluftzuführkanal (18) freigibt, um Materialreste auszublasen, wenn der Druck im Ventilkanal (10) und/oder im Ventilkörperkanal (11) niedriger als der Druck der Druckluft wird.9. Valve according to one of claims 6 to 8, characterized in that the blow-out device has an annular hole nozzle (19) which closes the compressed air supply duct (18) when the pressure in the valve duct (10) and / or in a valve body duct (11 ), in which the valve body (4) can be moved back and forth, is higher than the pressure of the compressed air, and which releases the compressed air supply duct (18) in order to blow out material residues when the pressure in the valve duct (10) and / or in the valve body duct ( 11) becomes lower than the pressure of the compressed air.
10. Ventil nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die10. Valve according to one of claims 6 to 8, characterized in that the
Ausblaseinrichtung mindestens einen Ausblaskanal (12, 12.1) hat, über den die Materialreste aus dem Ventil ausgeblasen werden.Blow-out device has at least one blow-out channel (12, 12.1) through which the material residues are blown out of the valve.
11. Ventil nach Anspruch 10, dadurch gekennzeichnet, daß der Ausblaskanal (12, 12.1) einen Ventilkörperkanal (11), in dem der Ventilkörper (4) bewegbar ist, mit einem Ausgangsbereich (20) des Ventilkanals (10) verbindet. 11. Valve according to claim 10, characterized in that the blow-out channel (12, 12.1) connects a valve body channel (11), in which the valve body (4) is movable, with an output region (20) of the valve channel (10).
12. Ventil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Ventilkörper (4) mittels einer Kraft, die auf ständig anstehender Druckluft beruht, in seiner Verschließposition und/oder seiner Rückzugsposition gehalten ist.12. Valve according to one of the preceding claims, characterized in that the valve body (4) is held in its closed position and / or its retracted position by means of a force which is based on constantly present compressed air.
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EP99952452A 1998-09-14 1999-09-14 Valve Withdrawn EP1029188A1 (en)

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DE1998142037 DE19842037A1 (en) 1998-09-14 1998-09-14 Valve
DE19842037 1998-09-14
PCT/EP1999/006797 WO2000015989A1 (en) 1998-09-14 1999-09-14 Valve

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952452A Withdrawn EP1029188A1 (en) 1998-09-14 1999-09-14 Valve

Country Status (4)

Country Link
EP (1) EP1029188A1 (en)
AU (1) AU6465899A (en)
DE (1) DE19842037A1 (en)
WO (1) WO2000015989A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1675445A1 (en) * 1968-02-06 1970-12-10 De Lorenzo Piston valve
CH464628A (en) * 1968-05-17 1968-10-31 Froelich Martin Pressure medium controlled valve
DK151077C (en) * 1974-10-11 1988-04-05 Dansk Ind Syndikat FLUIDUM VALVE VALVE
US4122724A (en) * 1977-06-24 1978-10-31 The Boeing Company Swept frequency audible bond tester
US4249560A (en) * 1979-03-28 1981-02-10 Raque Glen F Automatic valve clearoff
DE3107429C2 (en) * 1981-02-27 1986-11-20 Otto Tuchenhagen GmbH & Co KG, 2059 Büchen Cleanable sampling valve
CH663072A5 (en) * 1984-01-26 1987-11-13 Sulzer Ag PRESSURE MEDIA ACTUATED VALVE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0015989A1 *

Also Published As

Publication number Publication date
DE19842037A1 (en) 2000-04-06
WO2000015989A1 (en) 2000-03-23
AU6465899A (en) 2000-04-03

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