DE283732C - - Google Patents

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Publication number
DE283732C
DE283732C DENDAT283732D DE283732DA DE283732C DE 283732 C DE283732 C DE 283732C DE NDAT283732 D DENDAT283732 D DE NDAT283732D DE 283732D A DE283732D A DE 283732DA DE 283732 C DE283732 C DE 283732C
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Germany
Prior art keywords
roller
liquid
housing
measured
viscosity
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DENDAT283732D
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German (de)
Publication of DE283732C publication Critical patent/DE283732C/de
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • G01N11/08Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Description

DEUTSCHES REICHGERMAN EMPIRE

REiCHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

- Jtt 283732 KLASSE 42/. GRUPPE- Jtt 283732 CLASS 42 /. GROUP

Dr. LUDWIG GÜMBEL in CHARLOTTENBURG.Dr. LUDWIG GÜMBEL in CHARLOTTENBURG.

Patentiert im Deutschen Reiche vom 17. Februar 1914 ab.Patented in the German Empire on February 17, 1914.

Die vorliegende Erfindung beruht auf der Erkenntnis, daß die Viscosität dadurch bestimmt werden kann, daß man die Druckzunahme einer Flüssigkeit mißt, welche entsteht, wenn man zwei Flächen von der Länge L und dein Abstande der beiden Flächen h gegeneinander mit der Geschwindigkeit u verschiebt, wobei der Zwischenraum zwischen den Flächen mit derjenigen Flüssigkeit ausgefüllt werden muß, deren Viscosität zu messen ist; dann errechnet sich die Viscosität aus der Flüssigkeit aus der BeziehungThe present invention is based on the knowledge that the viscosity can be determined by measuring the pressure increase of a liquid which arises when two surfaces of the length L and the distance between the two surfaces h are displaced with respect to one another at the speed u, where the space between the surfaces must be filled with the liquid whose viscosity is to be measured; then the viscosity is calculated from the liquid from the relationship

■ ■· . , p · h*
η = proportional --=- .
■ ■ ·. , p · h *
η = proportional - = -.

ic L/ ' M ic L / 'M

Der diesem Verfahren dienende Apparat besteht (Fig. ι und 2) aus einem zylindrischen Gehäuse A, in welchem eine Walze B drehbar gelagert. ist, deren Durchmesser von dem Durchmesser des Gehäuses um ein bekanntes Maß verschieden . ist. ■ Die Walze schließt sich an den Stirnflächen genau an das Gehäuse an, so daß ein Austritt der Flüssigkeit an den Stirnflächen nicht oder jedenfalls nicht in meßbarer Weise eintritt. Die Flüssigkeit, deren Viscosität zu messen ist, tritt an beliebiger Stelle des Umfanges ein und wird durch die sich drehende Walze mitgenommen. Der Spielraum zwischen der Walze und dem Gehäuse wird an einer Stelle durch eine achsiale, im Umfang des Gehäuses eingelagerte Feder C stark verengt. An dieser Stelle tritt bei der Drehung der Walze eine Druckerhöhung der Flüssigkeit auf, welche gemessen werden kann, und aus welcher nach der oben gegebenen Formel sich die Viscosität einfach bestimmen läßt. Statt die Walze genau konzentrisch -in dem Gehäuse zu lagern, kann man auch gemäß Fig. 3 so vorgehen, daß man die Walze B exzentrisch lagert und die Flüssigkeit an denjenigen Punkten des Umfanges einführt, in welchem der größte Abstand zwischen Walze und Gehäuse vorhanden ist, und daß man die Druckzunahme ungefähr an derjenigen Stelle mißt, an welcher der geringste Spielraum zwischen Walze und Gehäuse vorhanden ist.The apparatus used for this process consists (FIGS. 1 and 2) of a cylindrical housing A in which a roller B is rotatably mounted. whose diameter differs from the diameter of the housing by a known amount. is. The roller adjoins the housing exactly at the end faces, so that the liquid does not emerge at the end faces, or at least not in a measurable manner. The liquid, the viscosity of which is to be measured, enters at any point on the circumference and is carried along by the rotating roller. The clearance between the roller and the housing is greatly narrowed at one point by an axial spring C embedded in the circumference of the housing. At this point, as the roller rotates, the pressure of the liquid increases, which can be measured and from which the viscosity can be easily determined using the formula given above. Instead of storing the roller exactly concentrically in the housing, one can also proceed according to FIG. 3 so that the roller B is eccentrically stored and the liquid is introduced at those points on the circumference in which the greatest distance between the roller and the housing is present , and that the pressure increase is measured approximately at that point at which there is the smallest clearance between the roller and the housing.

Claims (3)

Patent-Ansprüche:Patent Claims: 1. Verfahren zur Bestimmung der Viscosität von Flüssigkeiten, dadurch gekennzeichnet, daß die Flüssigkeit in den Zwischenraum zwischen zwei in bestimmtem Abstand gehaltenen und sich gegeneinander verschiebende Flächen eingelassen und die Druckzunahme gemessen wird, die sich aus der Mitnahme der Flüssigkeit ergibt und die ein Maß für dje Viscositätskonstante ist.1. A method for determining the viscosity of liquids, characterized in that that the liquid in the space between two held at a certain distance and against each other shifting surfaces and the pressure increase is measured results from the entrainment of the liquid and which is a measure of the viscosity constant is. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß in einem zylindrischen Gehäuse konzentrisch eine Walze sowie eine den Zwischenraum zwischen Gehäuse und Walze nahezu ausfüllende und die Zirkulation der Flüssigkeit verhindernde Feder achsial .gelagert ist, an der die Druckzu-2. Device for carrying out the method according to claim 1, characterized in that that in a cylindrical housing concentrically a roller and a space between the housing and The spring almost fills the roller and prevents the fluid from circulating is axially supported, on which the pressure nähme der Flüssigkeit in dem verbleibenden Hohlraum in der Drehrichtung gemessen wird.would take the liquid in the remaining cavity measured in the direction of rotation will. 3. Vorrichtung zur Ausführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß eine Walze exzentrisch in einem Gehäuse gelagert ist, so daß ein größter und ein kleinster Abstand zwischen Gehäuse und Walze an zwei ungefähr diametral entgegengesetzten Punkten entsteht, zwischen denen die Druckdifferenz der Flüssigkeit gemessen wird.3. Apparatus for carrying out the method according to claim 1, characterized in that that a roller is mounted eccentrically in a housing, so that a largest and a smallest distance between Housing and roller are created at two approximately diametrically opposed points, between which the pressure difference of the liquid is measured. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT283732D Active DE283732C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953016A (en) * 1956-06-20 1960-09-20 Joseph C Miner Viscosimeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953016A (en) * 1956-06-20 1960-09-20 Joseph C Miner Viscosimeter

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