DE19959117A1 - Humidity measuring equipment for bulk material flow has humidity measurement probe arranged to compression region of movable bulk material compression component at one side of cylinder - Google Patents
Humidity measuring equipment for bulk material flow has humidity measurement probe arranged to compression region of movable bulk material compression component at one side of cylinderInfo
- Publication number
- DE19959117A1 DE19959117A1 DE1999159117 DE19959117A DE19959117A1 DE 19959117 A1 DE19959117 A1 DE 19959117A1 DE 1999159117 DE1999159117 DE 1999159117 DE 19959117 A DE19959117 A DE 19959117A DE 19959117 A1 DE19959117 A1 DE 19959117A1
- Authority
- DE
- Germany
- Prior art keywords
- bulk material
- cylinder
- moisture measuring
- measuring device
- humidity
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
Abstract
Description
Die Erfindung betrifft eine Feuchtemeßeinrichtung für einen Schüttgutstrom nach dem Oberbegriff des Anspruchs 1.The invention relates to a moisture measuring device for a bulk material flow according to the preamble of claim 1.
In Schüttgutströmen, unter denen sowohl riesel- als auch schüttfähige, gegebenenfalls pastose Produktströme, die nicht gasförmig oder flüssig sind, d. h. auch Produktströme aus relativ zähem Material wie beispielsweise Ton verstanden werden sollen und die beispielsweise Bergbau-Produkte wie Erz, Kohle, Salze Mineralien, Baumaterialien wie Sand, Kies, Ton, Gips, Keramikmassen, Nahrungsmittel wie Getreide, Reis, Zucker, Saaten, Mehl, Gewürze, Cerealien oder chemische Produkte wie Granulate, Tabletten, Pulver, Pasten, Dünger, Waschpulver od. dgl. umfassen, läßt sich die enthaltene Feuchtigkeit schlecht oder nur mit einem hohen Fehler behaftet messen, da sich die im Schüttgutstrom enthaltene Luft störend auswirkt. Je mehr Luft enthalten ist, umso ungenauer werden die Messungen. So werden bei einer hochfrequenten kapazitiven Feuchtemeßsonde die Feldlinien des elektrischen Feldes durch die enthaltene Luft wie Licht beim Übergang von Luft in Wasser gebrochen, wodurch die Messung verfälscht wird, zumal das Verhältnis von Luft, Feststoffanteilen und Dichte permanent schwankt.In bulk flows, including both free-flowing and pourable, optionally pasty product streams that are not gaseous or liquid, d. H. also understood product flows from relatively tough material such as clay and for example mining products such as ore, coal, salts Minerals, building materials such as sand, gravel, clay, gypsum, ceramic masses, Food such as cereals, rice, sugar, seeds, flour, spices, cereals or chemical products such as granules, tablets, powders, pastes, fertilizers, Detergent powder or the like. Include, the moisture contained bad or measure only with a high error, because the in the bulk flow contained air has a disruptive effect. The more air there is, the less precise it is are the measurements. So at a high frequency capacitive Moisture probe the field lines of the electric field through the air it contains like light refracted at the transition from air to water, making the measurement is falsified, especially since the ratio of air, solids and density fluctuates constantly.
Aufgabe der Erfindung ist es, eine Feuchtemeßeinrichtung nach dem Oberbegriff des Anspruch 1 zu schaffen, mit der die in einem Schüttgutstrom enthaltene Feuchtigkeit genauer meßbar ist.The object of the invention is to provide a moisture measuring device according to the Preamble of claim 1 to create with which in a bulk flow contained moisture is more precisely measurable.
Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst.This task is according to the characterizing part of the claim 1 solved.
Bei der vorliegenden Feuchtemeßeinrichtung werden Proben aus einem Schüttgutstrom gleichmäßig verdichtet und dann die Feuchte im verdichteten Bereich und damit im wesentlichen immer unter gleichen Bedingungen gemessen, so daß sich dementsprechend genaue Meßwerte erzielen lassen.In the present moisture measuring device, samples from a Bulk material flow compressed evenly and then the moisture in the compressed Range and therefore essentially always measured under the same conditions, so that accurate measurements can be obtained accordingly.
Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further refinements of the invention are as follows Description and the dependent claims.
Die Erfindung wird nachstehend anhand von in den beigefügten Abbildungen dargestellten Ausführungsbeispielen näher erläutert.The invention is illustrated below in the accompanying figures illustrated embodiments explained in more detail.
Fig. 1 zeigt schematisch in Seitenansicht eine Ausführungsform einer Feuchtemeßeinrichtung. Fig. 1 shows schematically in side view an embodiment of a moisture measuring device.
Fig. 2 zeigt schematisch in Seitenansicht eine weitere Ausführungsform einer Feuchtemeßeinrichtung. Fig. 2 shows schematically in side view a further embodiment of a moisture measuring device.
Die in Fig. 1 dargestellte Feuchtemeßeinrichtung umfaßt einen Zylinder 1, der beispielsweise rechteckigen oder quadratischen Querschnitt aufweisen kann und an einem Ende oberseitig einen Schüttguteinlaß 2 in Form einer Öffnung aufweist sowie am anderen Ende offen ist, wodurch ein Schüttgutauslaß 3 gebildet wird. Der Zylinder 1 kann horizontal oder in einem Winkel zur Horizontalen angeordnet sein.The moisture measuring device shown in Fig. 1 comprises a cylinder 1 , which may have, for example, rectangular or square cross-section and at one end has a bulk material inlet 2 in the form of an opening and is open at the other end, whereby a bulk material outlet 3 is formed. The cylinder 1 can be arranged horizontally or at an angle to the horizontal.
Der Zylinder 1 ist an seinem schüttguteinlaßseitigen Ende durch eine Platte 4 verschlossen, an der ein Hubzylinder 5 angeflanscht ist, dessen Kolbenstange 6 sich durch die Platte 4 in das innere des Zylinders 1 erstreckt und dort ein plattenförmiges Schüttgutverdichtungselement 7 trägt.The cylinder 1 is closed at its bulk material inlet end by a plate 4 , to which a lifting cylinder 5 is flanged, the piston rod 6 of which extends through the plate 4 into the interior of the cylinder 1 and carries a plate-shaped bulk material compression element 7 there .
Mit dem Schüttgutverdichtungselement 7 ist ein mitlaufender Deckel 8 verbunden, der beim Ausfahren der Kolbenstange 6 den Schüttguteinlaß 3 fortschreitend abdeckt, so daß kein Schüttgut zwischen Schüttgutverdich tungselement 7 und Platte 4 fallen kann. Gegebenenfalls kann der Zylinder 1 im Bereich unterhalb des Schüttguteinlasses 3 und insbesondere benachbart zur Platte 4 nach unten gerichtete Öffnungen aufweisen, durch die geringe Mengen von in den Leerraum zwischen Schüttgutverdichtungselement 7 und Platte 4 gelangtem Schüttgut beim Rückhub des Hubzylinders 5 entweichen können.With the bulk material compression element 7 , a moving cover 8 is connected, which covers the bulk material inlet 3 progressively when the piston rod 6 extends, so that no bulk material between the bulk material compression element 7 and plate 4 can fall. If necessary, the cylinder 1 in the area below the bulk material inlet 3 and in particular adjacent to the plate 4 can have openings directed downwards, through which small quantities of bulk material which have entered the empty space between the bulk material compression element 7 and the plate 4 can escape during the return stroke of the lifting cylinder 5 .
Der Zylinder 1 ist an seinem schüttgutauslaßseitigen Ende mit einer angelenkten Stauklappe 9 versehen, die dieses Ende unter Einwirkung eines Gewichts 10 oder einer Feder verschließt.The cylinder 1 is provided at its bulk material outlet end with an articulated baffle flap 9 which closes this end under the action of a weight 10 or a spring.
Das Schüttgut kann bei eingefahrener Kolbenstange 6 durch den Schüttguteinlaß 3 in den Zylinder 1 fallen und wird dann beispielsweise zeitgesteuert mittels des Schüttgutverdichtungselements 7 im Zylinder 1 zu einem Strang gleichmäßig durch Einwirken einer vorbestimmten Kraft verdichtet. Die Feuchtemessung erfolgt im Bereich des verdichteten Strangs mittels einer Feuchtemeßsonde 11. Da der Strang jeweils gleichmäßig verdichtet wird, wird immer unter gleichen Bedingungen die Feuchte gemessen.The bulk material can fall into the cylinder 1 through the bulk material inlet 3 when the piston rod 6 is retracted and is then compressed, for example in a time-controlled manner, into a strand by means of the bulk material compression element 7 in the cylinder 1 by the action of a predetermined force. The moisture measurement takes place in the region of the compacted strand by means of a moisture measuring probe 11 . Since the strand is compressed evenly, the moisture is always measured under the same conditions.
Wird anschließend die Kraft, die das Schüttgutverdichtungselement 7 ausübt, entsprechend erhöht, öffnet sich die Stauklappe 9 und das im Zylinder 1 enthaltene Schüttgut kann entweichen. Der durch die Stauklappe 9 ausgeübte Staudruck ist insbesondere einstellbar, um diesen an das jeweilige Produkt anzupassen.If the force exerted by the bulk material compression element 7 is subsequently increased accordingly, the damper 9 opens and the bulk material contained in the cylinder 1 can escape. The dynamic pressure exerted by the baffle flap 9 can in particular be adjusted in order to adapt it to the respective product.
Anstelle eine Hubzylinders 5 läßt sich beispielsweise auch eine von einem Ritzel antreibbare Zahnstange verwenden.Instead of a lifting cylinder 5 , a rack that can be driven by a pinion can also be used, for example.
Bei der in Fig. 2 dargestellten Ausführungsform ist in dem Zylinder 1 ein schneckenförmiges Schüttgutverdichtungselement 7 angeordnet, das über eine Welle 12 von einem nicht dargestellten Motor antreibbar ist und sich über einen vorbestimmten Bereich vom Schüttguteinlaß 2 in Richtung zur Stauklappe 9 erstreckt, woran sich der Bereich des gleichmäßig verdichteten Strangs anschließt, in dessen Bereich die Feuchtemeßsonde 11 angeordnet ist.In the embodiment shown in Fig. 2, a screw-shaped bulk material compression element 7 is arranged in the cylinder 1 , which can be driven via a shaft 12 by a motor, not shown, and extends over a predetermined range from the bulk material inlet 2 in the direction of the damper 9 , which is what the Area of the uniformly compressed strand connects, in the area of which the moisture probe 11 is arranged.
Hierbei ist ferner die Stauklappe 9 axial bezüglich der Welle 12 gegen die Kraft einer sich an einer Gehäusewandung 13 abstützenden Schraubenfeder 14 verschiebbar angeordnet, wobei entweder der Zylinder 1 oder ein Anschlag 15 auf der Welle 12 den Hub der Stauklappe 9 in Richtung zum Schüttguteinlaß 2 begrenzt.Here, the damper 9 is also axially displaceable with respect to the shaft 12 against the force of a helical spring 14 supported on a housing wall 13 , with either the cylinder 1 or a stop 15 on the shaft 12 limiting the stroke of the damper 9 in the direction of the bulk material inlet 2 .
Die Stauklappe 9 kann bei bestimmten Produkten entfalten, bei denen die Reibung des Produkts an der Innenwand des Zylinder 1 ausreicht, um die gewünschte Verdichtung zu einem gleichmäßigen Strang vorzunehmen. Ein derartiges Produkt ist z. B. Ton. Für Ton läßt sich beispielsweise eine Meßgenauigkeit im Bereich von 0,1 bis 0,2% absoluter Feuchte mit der hier beschriebenen Feuchtemeßeinrichtung erzielen.The baffle flap 9 can unfold in certain products in which the friction of the product on the inner wall of the cylinder 1 is sufficient to carry out the desired compression into a uniform strand. Such a product is e.g. B. clay. For clay, for example, a measuring accuracy in the range of 0.1 to 0.2% absolute humidity can be achieved with the moisture measuring device described here.
Der Zylinder 1 kann auch im wesentlichen vertikal angeordnet sein, wobei dann beispielsweise ein seitlicher, gegebenenfalls beim Verdichten verschließbarer Schüttguteinlaßtrichter vorgesehen sein kann.The cylinder 1 can also be arranged essentially vertically, in which case, for example, a lateral bulk material inlet funnel, which can optionally be closed during compression, can then be provided.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999159117 DE19959117A1 (en) | 1999-12-08 | 1999-12-08 | Humidity measuring equipment for bulk material flow has humidity measurement probe arranged to compression region of movable bulk material compression component at one side of cylinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999159117 DE19959117A1 (en) | 1999-12-08 | 1999-12-08 | Humidity measuring equipment for bulk material flow has humidity measurement probe arranged to compression region of movable bulk material compression component at one side of cylinder |
Publications (1)
Publication Number | Publication Date |
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DE19959117A1 true DE19959117A1 (en) | 2001-07-05 |
Family
ID=7931826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE1999159117 Ceased DE19959117A1 (en) | 1999-12-08 | 1999-12-08 | Humidity measuring equipment for bulk material flow has humidity measurement probe arranged to compression region of movable bulk material compression component at one side of cylinder |
Country Status (1)
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DE (1) | DE19959117A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10319429A1 (en) * | 2003-04-17 | 2004-11-11 | Manfred Ludwig | Moisture measurement device for determining the moisture level within a sample comprises a sample space with a moisture sensor and means for pressurizing the sample space |
DE102005042149A1 (en) * | 2004-09-22 | 2006-03-30 | Fagus-Grecon Greten Gmbh Und Co Kg | Moisture measurement in a loose material flow, especially wood fibers used in manufacture of fiber boards, whereby a capture channel section is provided to temporarily capture a sample for moisture measurement |
DE102005001850A1 (en) * | 2005-01-10 | 2006-07-20 | Ese Embedded System Engineering Gmbh | Liquid e.g. oil, quantity measuring device for vehicle, has measuring chamber and sensor formed in area of liquid guide such that chamber absorbs part of liquid flowing through guide, where sensor detects quantity of absorbed liquid |
US7231814B2 (en) | 2003-11-28 | 2007-06-19 | Lely Enterprises Ag | Moisture measuring device and method |
CZ303066B6 (en) * | 2009-07-28 | 2012-03-21 | Vysoká škola technická a ekonomická v Ceských Budejovicích | Method of measuring filtration and hydraulic properties of pack of drainage tubing and apparatus for making the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3538885C1 (en) * | 1985-11-02 | 1987-06-04 | Elba Werk Maschinen Gmbh & Co | Method and appliance for measuring the intrinsic moisture of bulk solids in the preparation of concrete |
DE4224128A1 (en) * | 1992-07-22 | 1994-02-03 | Haendle Gmbh & Co Kg | Continuous monitoring of the moisture content of clay-material prior to concasting - using microwave beam to determine any deficiency and activate a water supply to correct for this deficiency |
DE19744483A1 (en) * | 1997-10-09 | 1999-04-15 | Claas Selbstfahr Erntemasch | Moisture measuring device and method for moisture measurement in harvesting machines |
DE19744485A1 (en) * | 1997-10-09 | 1999-04-15 | Claas Selbstfahr Erntemasch | Device for measuring moisture in harvesting machines |
-
1999
- 1999-12-08 DE DE1999159117 patent/DE19959117A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3538885C1 (en) * | 1985-11-02 | 1987-06-04 | Elba Werk Maschinen Gmbh & Co | Method and appliance for measuring the intrinsic moisture of bulk solids in the preparation of concrete |
DE4224128A1 (en) * | 1992-07-22 | 1994-02-03 | Haendle Gmbh & Co Kg | Continuous monitoring of the moisture content of clay-material prior to concasting - using microwave beam to determine any deficiency and activate a water supply to correct for this deficiency |
DE19744483A1 (en) * | 1997-10-09 | 1999-04-15 | Claas Selbstfahr Erntemasch | Moisture measuring device and method for moisture measurement in harvesting machines |
DE19744485A1 (en) * | 1997-10-09 | 1999-04-15 | Claas Selbstfahr Erntemasch | Device for measuring moisture in harvesting machines |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10319429A1 (en) * | 2003-04-17 | 2004-11-11 | Manfred Ludwig | Moisture measurement device for determining the moisture level within a sample comprises a sample space with a moisture sensor and means for pressurizing the sample space |
US7231814B2 (en) | 2003-11-28 | 2007-06-19 | Lely Enterprises Ag | Moisture measuring device and method |
DE102005042149A1 (en) * | 2004-09-22 | 2006-03-30 | Fagus-Grecon Greten Gmbh Und Co Kg | Moisture measurement in a loose material flow, especially wood fibers used in manufacture of fiber boards, whereby a capture channel section is provided to temporarily capture a sample for moisture measurement |
DE102005042149B4 (en) * | 2004-09-22 | 2007-06-21 | Fagus-Grecon Greten Gmbh & Co Kg | Device for determining the moisture content of a guided by at least one line bulk material |
DE102005001850A1 (en) * | 2005-01-10 | 2006-07-20 | Ese Embedded System Engineering Gmbh | Liquid e.g. oil, quantity measuring device for vehicle, has measuring chamber and sensor formed in area of liquid guide such that chamber absorbs part of liquid flowing through guide, where sensor detects quantity of absorbed liquid |
DE102005001850B4 (en) * | 2005-01-10 | 2007-11-15 | Ese Embedded System Engineering Gmbh | Measuring device and method for measuring a size of a liquid |
CZ303066B6 (en) * | 2009-07-28 | 2012-03-21 | Vysoká škola technická a ekonomická v Ceských Budejovicích | Method of measuring filtration and hydraulic properties of pack of drainage tubing and apparatus for making the same |
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Legal Events
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OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |