DE102006012032A1 - Vacuum pressure controller for e.g. vacuum distillation equipment, has valve controlling admittance of gas to intake port, where dry gas is bled into vacuum stream in connection with maintaining vacuum pressure in evaporator system - Google Patents
Vacuum pressure controller for e.g. vacuum distillation equipment, has valve controlling admittance of gas to intake port, where dry gas is bled into vacuum stream in connection with maintaining vacuum pressure in evaporator system Download PDFInfo
- Publication number
- DE102006012032A1 DE102006012032A1 DE102006012032A DE102006012032A DE102006012032A1 DE 102006012032 A1 DE102006012032 A1 DE 102006012032A1 DE 102006012032 A DE102006012032 A DE 102006012032A DE 102006012032 A DE102006012032 A DE 102006012032A DE 102006012032 A1 DE102006012032 A1 DE 102006012032A1
- Authority
- DE
- Germany
- Prior art keywords
- vacuum
- gas
- vacuum pressure
- pump
- intake port
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/08—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs
- B01D3/085—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs using a rotary evaporator
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
Description
Diese Erfindung betrifft einen Vakuumdruckregler des Typs, der für Rotationsverdampfer, Vakuumtrockenöfen und ortsfeste Destillierausrüstungen verwendet wird.These The invention relates to a vacuum pressure regulator of the type used for rotary evaporators, Vakuumtrockenöfen and stationary distillation equipment becomes.
Vakuumdruckregler werden bei mehreren chemischen Laboranwendungen, zum Beispiel Rotationsverdampfern, Vakuumtrockenöfen und ortsfesten Destillierausrüstungen, verwendet, worunter die Verwendung bei Rotationsverdampfern bei weitem überwiegt.Vacuum regulator are used in several chemical laboratory applications, for example rotary evaporators, Vakuumtrockenöfen and stationary distilling equipment, including use in rotary evaporators far outweighs.
Vakuumdruckregler erhalten den vorhandenen Vakuumdruck während dieser Destillationsprozesse aufrecht, und zwar bei Temperaturen, die typischerweise 180°C nicht übersteigen, und für Volumen von bis zu ca. 30 Litern destillierter Flüssigkeit. Die typische Prozessanordnung besteht aus einem Destillierapparat, einem Kondensator mit einem Flüssigkeitssammler, einem Druckregler und einer Vakuumpumpe. Ein Rotationsverdampfer ist zum Beispiel im US-Patent Nr. 6.709.025 offenbart. Während der Destillation verwendete Chemikalien erfordern die Aufrechterhaltung eines Drucks im Bereich von mehreren Torr bis zu einigen Hundert Torr.Vacuum regulator maintain the existing vacuum pressure during these distillation processes upright, at temperatures that typically do not exceed 180 ° C, and for Volume of up to approx. 30 liters of distilled liquid. The typical process arrangement consists of a still, a Condenser with a liquid collector, a pressure regulator and a vacuum pump. A rotary evaporator is disclosed, for example, in U.S. Patent No. 6,709,025. During the distillation used chemicals require the maintenance of pressure in the range of several Torr to several hundred Torr.
In diesen Prozessen setzt die Vakuumpumpe mittels eines Vakuumdruckreglers das System unter Vakuum. Regler nach dem Stand der Technik hatten unterschiedliche Mittel zur Druckregelung. Es wurde ein Drucksensor bereitgestellt, um den Druck im System zu messen, und ein Regler regelte ein Ventil, um den durch den Benutzer eingestellten Druck aufrechtzuerhalten. Das Ventil, im typischsten Fall ein Inline-Proportional- oder Schaltventil, regelte den Grad des Vakuums, unter das der Destillierapparat gesetzt wurde. Andere Systeme schalteten die Vakuumpumpe ein oder aus, um den Grad des Vakuums zu regeln. Diese verschiedenen Verfahren verkürzten manchmal die Lebensdauer der Pumpe, machten Wartungsarbeiten notwendig oder erforderten Zeit für die Rückkehr der Vakuumpumpe aus einem Niedervakuum in ein Hochvakuum.In The vacuum pump uses these processes by means of a vacuum pressure regulator the system under vacuum. Prior art regulators had different ones Means for pressure control. A pressure sensor was provided, to measure the pressure in the system, and a regulator controlled a valve, to maintain the pressure set by the user. The valve, most typically an in-line proportional or pilot valve, regulated the degree of vacuum under which the still set has been. Other systems turned the vacuum pump on or off to to regulate the degree of vacuum. These different procedures sometimes shortened the life of the pump, maintenance required or necessary required time for the return the vacuum pump from a low vacuum in a high vacuum.
Die Erfindung stellt einen Vakuumdruckregler bereit, bei dem ein Trockengas, zum Beispiel Luft, in den Vakuumstrom abgelassen wird, was im Zusammenhang mit der Aufrechterhaltung des erforderlichen Vakuumdrucks im System erfolgt. Das in den Vakuumstrom abgelassene Gas verdünnt den Dampf, kühlt das der Pumpe zugeführte Dampf-Gas-Gemisch ab und verhindert die Kondensation in der Vakuumpumpe. Das führt zu einer höheren Lebensdauer der Pumpe, längeren Wartungsintervallen, geringeren Betriebskosten und einer schnelleren Erholung der Pumpe.The The invention provides a vacuum pressure regulator in which a drying gas, For example, air is vented into the vacuum stream, which is related with the maintenance of the required vacuum pressure in the system he follows. The gas discharged into the vacuum stream dilutes the vapor, that cools the pump supplied steam-gas mixture and prevents condensation in the vacuum pump. That leads to a higher Life of the pump, longer Maintenance intervals, lower operating costs and a faster Recovery of the pump.
Die Verwendung der Erfindung mindert die chemische Aggressivität des verdünnten Dampfes gegenüber der Pumpe und anderen Teilen des Systems. Außerdem setzt die geringere Betriebstemperatur des mit dem Gas verdünnten Dampfes die Temperatur der Pumpe herab, was deren Lebensdauer erhöht. Der mit Luft verdünnte Dampf trägt auch zur Verhinderung der inneren Kondensation in der Pumpe bei und verringert die Ölverunreinigung in ölgedichteten Pumpen, indem ständig ein Förderstrom in der Pumpe zugelassen wird. Da die Pumpe ständig bei voller Drehzahl oder nahe dieser betreibbar ist, kehrt die Pumpe schnell zu ihrem ursprünglichen Vakuumdruck zurück, sobald das Belüftungsventil geschlossen ist.The Use of the invention reduces the chemical aggressiveness of the dilute vapor over the Pump and other parts of the system. Also, the lower one sets Operating temperature of the vapor diluted with the gas the temperature down the pump, which increases their life. The vapor diluted with air also carries to prevent internal condensation in the pump and decreases the oil pollution in oil-sealed Pump by constantly a flow is allowed in the pump. Because the pump is constantly at full speed or Near this is operable, the pump returns quickly to its original Vacuum pressure back, as soon as the vent valve closed is.
Diese und andere Merkmale und Vorteile der Erfindung sind aus der ausführlichen Beschreibung und den Zeichnungen ersichtlich.These and other features and advantages of the invention are apparent from the detailed Description and the drawings.
Die oben genannten und andere Aufgaben und Vorteile der Erfindung erscheinen in der folgenden ausführlichen Beschreibung. In der Beschreibung wird auf die beigefügten Zeichnungen Bezug genommen, die bevorzugte Ausführungsformen der Erfindung veranschaulichen.The Above and other objects and advantages of the invention appear in the following detailed Description. In the description, reference is made to the accompanying drawings With reference to the preferred embodiments of the invention illustrate.
Wie
in
Das
Ventil
Eine bevorzugte Ausführungsform der Erfindung ist sehr ausführlich beschrieben worden. Für den Fachmann sind viele Modifizierungen und Variationen der beschriebenen bevorzugten Ausführungsform ersichtlich. Daher sollte die Erfindung nicht auf die beschriebene Ausführungsform beschränkt, sondern durch die folgenden Ansprüche definiert werden.A preferred embodiment The invention is very detailed been described. For the Those skilled in the art are many modifications and variations of those described preferred embodiment seen. Therefore, the invention should not be limited to those described embodiment limited, but be defined by the following claims.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66215705P | 2005-03-16 | 2005-03-16 | |
US60/662157 | 2005-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006012032A1 true DE102006012032A1 (en) | 2006-09-21 |
Family
ID=36934076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006012032A Withdrawn DE102006012032A1 (en) | 2005-03-16 | 2006-03-14 | Vacuum pressure controller for e.g. vacuum distillation equipment, has valve controlling admittance of gas to intake port, where dry gas is bled into vacuum stream in connection with maintaining vacuum pressure in evaporator system |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060210405A1 (en) |
DE (1) | DE102006012032A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106474752A (en) * | 2016-12-22 | 2017-03-08 | 河南华瑞高新材料科技股份有限公司 | A kind of sealing rotary evaporating device of conveniently regulating and controlling pressure |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008051364B4 (en) * | 2008-10-15 | 2012-03-15 | Ika-Werke Gmbh & Co. Kg | rotary evaporator |
JP6368458B2 (en) * | 2013-05-24 | 2018-08-01 | 株式会社荏原製作所 | Vacuum pump with abatement function |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4213796A (en) * | 1978-03-01 | 1980-07-22 | Sparkle Wash, Inc. | Mobile cleaning unit |
US4476708A (en) * | 1982-11-12 | 1984-10-16 | Thoratec Laboratories Corporation | Flow controller |
US5340444A (en) * | 1992-02-27 | 1994-08-23 | Peter W. D. Van Der Heijden Laborbedarf | Circulation cooler for vacuum distillation apparatus |
US6123645A (en) * | 1999-06-01 | 2000-09-26 | General Motors Corporation | Neutral idle control mechanism for a torque-transmitting clutch in a power transmission |
US6974115B2 (en) * | 2002-12-11 | 2005-12-13 | Young & Franklin Inc. | Electro-hydrostatic actuator |
US20060169322A1 (en) * | 2003-12-12 | 2006-08-03 | Torkelson John E | Concealed automatic pool vacuum systems |
US7270749B1 (en) * | 2004-08-03 | 2007-09-18 | Intellicool Llc | Pump system |
-
2006
- 2006-03-10 US US11/372,695 patent/US20060210405A1/en not_active Abandoned
- 2006-03-14 DE DE102006012032A patent/DE102006012032A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106474752A (en) * | 2016-12-22 | 2017-03-08 | 河南华瑞高新材料科技股份有限公司 | A kind of sealing rotary evaporating device of conveniently regulating and controlling pressure |
CN106474752B (en) * | 2016-12-22 | 2018-10-12 | 河南华瑞高新材料有限公司 | A kind of sealing rotary evaporating device of conveniently regulating and controlling pressure |
Also Published As
Publication number | Publication date |
---|---|
US20060210405A1 (en) | 2006-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20111001 |